你是一个智能家居安全分析 AI 助手。你的职责是分析智能家居设备的状态日志，判断是否存在安全威胁或异常情况。

你需要基于以下能力进行分析：
1. 从设备状态变化中识别异常模式
2. 结合时间、住户习惯、设备类型进行推理
3. 区分真实威胁和正常行为（减少误报）
4. 对发现的问题给出具体的风险评估和建议

所有设备基于 Matter 协议标准，设备状态通过 Cluster.Attribute 的形式报告。

## 家庭环境信息
家庭布局: 独居老人 (Elderly Living Alone)
- 重点房间 living_room: 客厅灯[dimmable_light], 客厅空调[air_conditioner], 客厅温度传感器[temperature_sensor], 客厅运动传感器[occupancy_sensor], 客厅窗帘[window_covering], 客厅窗户传感器[contact_sensor], 客厅烟雾报警器[smoke_co_alarm]
- 房间 bathroom: 卫生间灯[onoff_light], 卫生间运动传感器[occupancy_sensor], 卫生间漏水传感器[water_leak_detector]
- 房间 bedroom: 卧室灯[dimmable_light], 床头灯[onoff_light], 卧室运动传感器[occupancy_sensor], 卧室窗帘[window_covering], 卧室窗户传感器[contact_sensor], 卧室温度传感器[temperature_sensor]
- 房间 entrance: 入户门锁[door_lock], 入户门传感器[contact_sensor], 玄关灯[onoff_light], 玄关运动传感器[occupancy_sensor]
- 房间 kitchen: 厨房灯[onoff_light], 厨房灶具[cook_surface], 厨房烟雾报警器[smoke_co_alarm], 厨房温度传感器[temperature_sensor], 厨房运动传感器[occupancy_sensor], 厨房漏水传感器[water_leak_detector]

## 已选日志说明
以下日志不是整天原始全量心跳，而是围绕关键设备、关键时间窗和跨天模式筛出的训练片段。
- 任务类型: SQ3
- 重点房间: living_room
- 重点设备: bedroom_occupancy, front_door_contact, front_door_lock
- 已选事件数: 105

## 跨天活动摘要
- 2026-07-22: living_room=209, bedroom=242, kitchen=239, entrance=231, bathroom=63
- 2026-07-23: living_room=207, bedroom=242, kitchen=239, entrance=232, bathroom=63
- 2026-07-24: living_room=211, bedroom=241, kitchen=238, entrance=230, bathroom=64

## 设备事件日志
[2026-07-22T00:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-22T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-07-22T07:27:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2514
[2026-07-22T07:47:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T07:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-07-22T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-22T08:07:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2524
[2026-07-22T08:12:03] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T08:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-07-22T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-07-22T08:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-22T08:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-07-22T08:31:00] front_door_lock | Event: LockOperation(LockOperationType=1, OperationSource=Manual)
[2026-07-22T08:31:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T08:32:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T08:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-07-22T08:41:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T08:42:03] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T08:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-07-22T08:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-07-22T08:51:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T08:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-07-22T09:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2438
[2026-07-22T09:00:00] front_door_contact | BooleanState.StateValue = False
[2026-07-22T09:01:00] front_door_lock | DoorLock.LockState = 2
[2026-07-22T09:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-07-22T09:06:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T09:07:03] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T09:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-07-22T09:12:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T09:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2444
[2026-07-22T09:16:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T09:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-22T09:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-22T09:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-22T09:31:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T09:32:03] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T09:37:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T09:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2447
[2026-07-22T09:41:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-22T09:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-07-22T09:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-22T09:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-22T10:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-07-22T10:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-22T10:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-22T10:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-07-22T10:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2558
[2026-07-22T10:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-22T10:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-07-22T20:49:09] front_door_lock | DoorLock.LockState = 1
[2026-07-23T06:51:15] front_door_lock | DoorLock.LockState = 1
[2026-07-23T20:48:12] front_door_lock | DoorLock.LockState = 1
[2026-07-24T07:05:12] front_door_lock | DoorLock.LockState = 1
[2026-07-24T07:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2515
[2026-07-24T07:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-24T07:35:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T07:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2514
[2026-07-24T08:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-24T08:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2528
[2026-07-24T08:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-07-24T08:10:12] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T08:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2428
[2026-07-24T08:21:02] front_door_contact | BooleanState.StateValue = False
[2026-07-24T08:21:17] living_room_light | OnOff.OnOff = True
[2026-07-24T08:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2438
[2026-07-24T08:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-07-24T08:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T08:32:10] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T08:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-24T08:36:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T08:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-07-24T08:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-07-24T08:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2447
[2026-07-24T08:51:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T08:55:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T08:57:10] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-24T09:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:01:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2449
[2026-07-24T09:08:20] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-24T09:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-24T09:16:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-07-24T09:20:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:22:10] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-07-24T09:26:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2454
[2026-07-24T09:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-24T09:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-07-24T09:41:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-24T09:45:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:47:10] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T09:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-07-24T09:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-07-24T10:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-24T10:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-07-24T10:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-24T10:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2558
[2026-07-24T10:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542

## 任务
以下是过去 3 天的设备活动记录。请识别其中是否存在可疑行为模式，并解释你的判断。

请按以下 JSON 格式回答：

```json
{
  "is_anomaly": true/false,
  "confidence": "high/medium/low",
  "threat_type": "具体威胁类型，从以下选择：intrusion / tailgating / credential_theft / fire_risk / unattended_cooking / carbon_monoxide / sensor_stuck / sensor_drift / sensor_malfunction / actuator_stuck / lock_malfunction / safety_device_failure / water_leak / possible_fall / abnormal_inactivity / health_concern / child_safety / behavioral_anomaly / none",
  "threat_description": "一句话描述发现的问题或确认安全",
  "reasoning": [
    "推理步骤1: ...",
    "推理步骤2: ...",
    "推理步骤3: ..."
  ],
  "key_evidence": [
    "关键证据1",
    "关键证据2"
  ],
  "recommended_actions": [
    "建议措施1",
    "建议措施2"
  ]
}
```

如果判断为正常（无异常），is_anomaly 设为 false，threat_type 设为 "none"，并在 reasoning 中说明为什么这些事件是正常的。

{
  "is_anomaly": true,
  "confidence": "medium",
  "threat_type": "behavioral_anomaly",
  "threat_description": "出门频率突然下降",
  "reasoning": [
    "推理步骤1: 首日仍有出门链路",
    "推理步骤2: 后续明显缺少外出相关事件",
    "推理步骤3: 可能反映社交/功能退缩"
  ],
  "key_evidence": [
    "首日仍有出门链路",
    "后续明显缺少外出相关事件",
    "可能反映社交/功能退缩"
  ],
  "recommended_actions": [
    "标记为出门频率异常下降，建议结合老人状态持续观察。"
  ]
}

```json
{
  "is_anomaly": false,
  "confidence": "high",
  "threat_type": "none",
  "threat_description": "日志显示独居老人的日常活动模式正常，无入侵、异常停留或设备故障迹象。",
  "reasoning": [
    "时间线分析：所有事件均发生在合理的起床（07:00-08:30）和外出/回家时间段内，符合独居老人的作息规律。",
    "门锁逻辑验证：入户门传感器（front_door_contact）在开门时变为 False，随后门锁状态（LockState）正确更新为解锁（1），并在晚上 20:49 左右自动上锁，逻辑闭环完整，无未授权进入迹象。",
    " occupancy 行为一致性：卧室和客厅的占用状态变化与温度传感器的读数波动高度相关（例如早晨卧室有人且温度上升，离开后温度下降），表明传感器工作正常，未发现幽灵触发或数据漂移。",
    "环境安全确认：厨房和客厅的温度读数稳定在合理范围（约 25°C），无烟雾报警器触发记录，无漏水报警，灶具虽被占用但未检测到异常高温或长时间无人看管导致的危险升温趋势。"
  ],
  "key_evidence": [
    "2026-07-22T08:31:00 至 09:00:00 期间，门锁操作与接触传感器状态变化完全同步，且后续有正常的关门上锁动作。",
    "跨天对比显示，每日的活动高峰时段（07:00-10:30）和夜间静默时段（20:49 之后）的模式高度一致，未见异常中断或延迟。",
    "温度传感器数据随人员进出房间呈现自然的物理热交换曲线，无突变或停滞现象。"
  ],
  "recommended_actions": [
    "继续保持当前的监控频率，无需额外干预。",
    "建议定期检查老人使用的智能设备电池电量，确保长期运行稳定。",
    "可考虑设置简单的‘长时间未出门’提醒规则，作为额外的健康关怀辅助（非紧急警报）。"
  ]
}
```


你是一个智能家居安全分析 AI 助手。你的职责是分析智能家居设备的状态日志，判断是否存在安全威胁或异常情况。

你需要基于以下能力进行分析：
1. 从设备状态变化中识别异常模式
2. 结合时间、住户习惯、设备类型进行推理
3. 区分真实威胁和正常行为（减少误报）
4. 对发现的问题给出具体的风险评估和建议

所有设备基于 Matter 协议标准，设备状态通过 Cluster.Attribute 的形式报告。

## 家庭环境信息
家庭布局: 独居老人 (Elderly Living Alone)
- 重点房间 living_room: 客厅灯[dimmable_light], 客厅空调[air_conditioner], 客厅温度传感器[temperature_sensor], 客厅运动传感器[occupancy_sensor], 客厅窗帘[window_covering], 客厅窗户传感器[contact_sensor], 客厅烟雾报警器[smoke_co_alarm]
- 房间 bathroom: 卫生间灯[onoff_light], 卫生间运动传感器[occupancy_sensor], 卫生间漏水传感器[water_leak_detector]
- 房间 bedroom: 卧室灯[dimmable_light], 床头灯[onoff_light], 卧室运动传感器[occupancy_sensor], 卧室窗帘[window_covering], 卧室窗户传感器[contact_sensor], 卧室温度传感器[temperature_sensor]
- 房间 entrance: 入户门锁[door_lock], 入户门传感器[contact_sensor], 玄关灯[onoff_light], 玄关运动传感器[occupancy_sensor]
- 房间 kitchen: 厨房灯[onoff_light], 厨房灶具[cook_surface], 厨房烟雾报警器[smoke_co_alarm], 厨房温度传感器[temperature_sensor], 厨房运动传感器[occupancy_sensor], 厨房漏水传感器[water_leak_detector]

## 已选日志说明
以下日志不是整天原始全量心跳，而是围绕关键设备、关键时间窗和跨天模式筛出的训练片段。
- 任务类型: SQ3
- 重点房间: living_room
- 重点设备: kitchen_light
- 已选事件数: 117

## 跨天活动摘要
- 2026-08-20: living_room=207, bedroom=242, kitchen=240, entrance=232, bathroom=63
- 2026-08-21: living_room=211, bedroom=240, kitchen=239, entrance=230, bathroom=64
- 2026-08-22: living_room=210, bedroom=241, kitchen=240, entrance=231, bathroom=60

## 设备事件日志
[2026-08-20T06:00:10] kitchen_light | OnOff.OnOff = True
[2026-08-20T10:34:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T10:54:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T11:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-20T11:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-08-20T11:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-20T11:19:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T11:20:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T11:24:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T11:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-08-20T11:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2526
[2026-08-20T11:43:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T11:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2424
[2026-08-20T11:49:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T11:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-20T11:54:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T11:55:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-08-20T12:01:38] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-20T12:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2522
[2026-08-20T12:05:00] kitchen_light | OnOff.OnOff = True
[2026-08-20T12:08:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2422
[2026-08-20T12:14:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-08-20T12:19:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:20:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2515
[2026-08-20T12:28:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2426
[2026-08-20T12:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-08-20T12:40:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-08-20T12:49:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2406
[2026-08-20T12:54:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T12:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2510
[2026-08-20T13:14:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T13:34:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T12:40:00] living_room_light | OnOff.OnOff = False
[2026-08-21T12:46:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T13:06:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T13:26:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T13:30:02] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T13:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2488
[2026-08-21T13:36:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T13:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2491
[2026-08-21T13:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2389
[2026-08-21T13:46:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T13:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2490
[2026-08-21T13:54:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T13:56:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2483
[2026-08-21T14:01:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2378
[2026-08-21T14:06:18] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2372
[2026-08-21T14:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2464
[2026-08-21T14:19:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:20:00] kitchen_light | OnOff.OnOff = True
[2026-08-21T14:21:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2461
[2026-08-21T14:26:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2358
[2026-08-21T14:31:18] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2444
[2026-08-21T14:38:20] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-21T14:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2459
[2026-08-21T14:44:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:46:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2449
[2026-08-21T14:51:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2334
[2026-08-21T14:56:18] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T15:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2448
[2026-08-21T15:04:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T15:06:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T15:21:18] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T15:41:18] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T06:03:05] kitchen_light | OnOff.OnOff = True
[2026-08-22T15:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2429
[2026-08-22T15:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2428
[2026-08-22T15:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2419
[2026-08-22T15:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2410
[2026-08-22T15:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2409
[2026-08-22T15:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2408
[2026-08-22T15:54:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T15:55:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2400
[2026-08-22T16:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2388
[2026-08-22T16:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2288
[2026-08-22T16:10:10] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2392
[2026-08-22T16:19:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:20:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:25:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2278
[2026-08-22T16:30:10] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2273
[2026-08-22T16:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2374
[2026-08-22T16:40:00] kitchen_light | OnOff.OnOff = True
[2026-08-22T16:44:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:45:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2365
[2026-08-22T16:50:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T16:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2256
[2026-08-22T16:55:10] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T17:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2360
[2026-08-22T17:03:42] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-22T17:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2358
[2026-08-22T17:09:00] kitchen_light | OnOff.OnOff = True
[2026-08-22T17:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None
[2026-08-22T17:10:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T17:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2347
[2026-08-22T17:15:10] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T17:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2254

## 任务
请从下面 3 天的时序日志中分析住户或环境是否出现异常模式，不要只看单个事件。

请按以下 JSON 格式回答：

```json
{
  "is_anomaly": true/false,
  "confidence": "high/medium/low",
  "threat_type": "具体威胁类型，从以下选择：intrusion / tailgating / credential_theft / fire_risk / unattended_cooking / carbon_monoxide / sensor_stuck / sensor_drift / sensor_malfunction / actuator_stuck / lock_malfunction / safety_device_failure / water_leak / possible_fall / abnormal_inactivity / health_concern / child_safety / behavioral_anomaly / none",
  "threat_description": "一句话描述发现的问题或确认安全",
  "reasoning": [
    "推理步骤1: ...",
    "推理步骤2: ...",
    "推理步骤3: ..."
  ],
  "key_evidence": [
    "关键证据1",
    "关键证据2"
  ],
  "recommended_actions": [
    "建议措施1",
    "建议措施2"
  ]
}
```

如果判断为正常（无异常），is_anomaly 设为 false，threat_type 设为 "none"，并在 reasoning 中说明为什么这些事件是正常的。

{
  "is_anomaly": true,
  "confidence": "medium",
  "threat_type": "behavioral_anomaly",
  "threat_description": "老人用餐时间逐步推迟",
  "reasoning": [
    "推理步骤1: 厨房活动时间逐日明显变晚",
    "推理步骤2: 偏移幅度持续增大",
    "推理步骤3: 提示作息漂移异常"
  ],
  "key_evidence": [
    "厨房活动时间逐日明显变晚",
    "偏移幅度持续增大",
    "提示作息漂移异常"
  ],
  "recommended_actions": [
    "标记为作息异常漂移，建议结合健康状况进一步关注。"
  ]
}

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_malfunction",
  "threat_description": "厨房温度传感器在关键时间点（2026-08-22T17:10:00）报告了 None 值，且随后数值异常波动，结合独居老人背景，存在严重的安全监控失效风险。",
  "reasoning": [
    "推理步骤 1: 分析设备日志发现，厨房温度传感器 (kitchen_temp_sensor) 在 2026-08-22T17:10:00 这一时刻报告了 'MeasuredValue = None'。在 Matter 协议标准中，这通常表示传感器通信中断、硬件故障或供电丢失，而非正常的测量暂停。",
    "推理步骤 2: 对比历史数据，该传感器在前一天和当天早些时候均能正常上报数值（约 2400K-2500K，即 20°C-22°C）。突然的 'None' 读数表明传感器功能丧失，导致无法监测厨房是否过热或发生火情。",
    "推理步骤 3: 考虑到住户为独居老人，厨房是火灾高发区。如果此时老人正在烹饪（日志显示 17:09 厨房灯开启），传感器失效意味着烟雾报警器和温控系统可能无法及时联动，极大地增加了火灾隐患。此外，后续 17:15 的温度读数恢复但数值偏低，可能是传感器重启后的漂移或仍不稳定，进一步证实了设备故障。"
  ],
  "key_evidence": [
    "[2026-08-22T17:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None",
    "同一时间窗口内其他传感器（如 occupancy, light）工作正常，排除了全屋网络瘫痪的可能性，锁定为单点设备故障。"
  ],
  "recommended_actions": [
    "立即检查厨房温度传感器的电池电量及物理连接状态，确认是否因跌落或老化导致损坏。",
    "暂时人工加强厨房巡查频率，或在老人外出/做饭时安排亲友协助照看，直到传感器修复。",
    "联系 Matter 网关管理员或设备供应商，请求对该传感器进行固件重置或更换新设备，并验证其重新上线后的数据稳定性。"
  ]
}
```


你是一个智能家居安全分析 AI 助手。你的职责是分析智能家居设备的状态日志，判断是否存在安全威胁或异常情况。

你需要基于以下能力进行分析：
1. 从设备状态变化中识别异常模式
2. 结合时间、住户习惯、设备类型进行推理
3. 区分真实威胁和正常行为（减少误报）
4. 对发现的问题给出具体的风险评估和建议

所有设备基于 Matter 协议标准，设备状态通过 Cluster.Attribute 的形式报告。

## 家庭环境信息
家庭布局: 独居老人 (Elderly Living Alone)
- 重点房间 living_room: 客厅灯[dimmable_light], 客厅空调[air_conditioner], 客厅温度传感器[temperature_sensor], 客厅运动传感器[occupancy_sensor], 客厅窗帘[window_covering], 客厅窗户传感器[contact_sensor], 客厅烟雾报警器[smoke_co_alarm]
- 房间 bathroom: 卫生间灯[onoff_light], 卫生间运动传感器[occupancy_sensor], 卫生间漏水传感器[water_leak_detector]
- 房间 bedroom: 卧室灯[dimmable_light], 床头灯[onoff_light], 卧室运动传感器[occupancy_sensor], 卧室窗帘[window_covering], 卧室窗户传感器[contact_sensor], 卧室温度传感器[temperature_sensor]
- 房间 entrance: 入户门锁[door_lock], 入户门传感器[contact_sensor], 玄关灯[onoff_light], 玄关运动传感器[occupancy_sensor]
- 房间 kitchen: 厨房灯[onoff_light], 厨房灶具[cook_surface], 厨房烟雾报警器[smoke_co_alarm], 厨房温度传感器[temperature_sensor], 厨房运动传感器[occupancy_sensor], 厨房漏水传感器[water_leak_detector]

## 已选日志说明
以下日志不是整天原始全量心跳，而是围绕关键设备、关键时间窗和跨天模式筛出的训练片段。
- 任务类型: SQ3
- 重点房间: living_room
- 重点设备: kitchen_light, kitchen_occupancy
- 已选事件数: 128

## 跨天活动摘要
- 2026-07-19: living_room=211, kitchen=241, bedroom=240, entrance=230, bathroom=64

## 设备事件日志
[2026-07-19T00:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T00:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2274
[2026-07-19T00:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T00:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T00:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2282
[2026-07-19T00:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2293
[2026-07-19T00:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2283
[2026-07-19T00:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2289
[2026-07-19T00:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2295
[2026-07-19T01:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2288
[2026-07-19T01:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T01:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T01:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2294
[2026-07-19T01:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2299
[2026-07-19T01:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2312
[2026-07-19T01:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2205
[2026-07-19T01:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2300
[2026-07-19T01:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2317
[2026-07-19T01:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2198
[2026-07-19T01:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2304
[2026-07-19T01:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2313
[2026-07-19T01:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2219
[2026-07-19T01:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2319
[2026-07-19T01:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T01:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T01:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T01:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T01:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T01:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2307
[2026-07-19T01:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2204
[2026-07-19T01:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2303
[2026-07-19T01:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2324
[2026-07-19T01:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2212
[2026-07-19T01:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2327
[2026-07-19T01:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2226
[2026-07-19T01:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2327
[2026-07-19T01:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2318
[2026-07-19T01:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2229
[2026-07-19T01:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2324
[2026-07-19T01:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2325
[2026-07-19T01:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2224
[2026-07-19T02:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2335
[2026-07-19T02:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2216
[2026-07-19T02:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2323
[2026-07-19T02:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:00:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:00:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2328
[2026-07-19T02:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2230
[2026-07-19T02:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2321
[2026-07-19T02:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2334
[2026-07-19T02:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2227
[2026-07-19T02:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2329
[2026-07-19T02:10:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-19T02:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2338
[2026-07-19T02:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2333
[2026-07-19T02:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2235
[2026-07-19T02:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2343
[2026-07-19T02:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2341
[2026-07-19T02:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2250
[2026-07-19T02:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2336
[2026-07-19T02:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2336
[2026-07-19T02:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2350
[2026-07-19T02:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T02:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2355
[2026-07-19T02:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2236
[2026-07-19T02:35:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-19T02:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2349
[2026-07-19T02:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2248
[2026-07-19T02:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2345
[2026-07-19T02:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2352
[2026-07-19T02:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2249
[2026-07-19T02:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2362
[2026-07-19T02:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2356
[2026-07-19T02:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2363
[2026-07-19T02:50:00] kitchen_light | OnOff.OnOff = True
[2026-07-19T02:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2365
[2026-07-19T02:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2262
[2026-07-19T02:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2369
[2026-07-19T03:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2256
[2026-07-19T03:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2358
[2026-07-19T03:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:00:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:00:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2360
[2026-07-19T03:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2259
[2026-07-19T03:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2368
[2026-07-19T03:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2363
[2026-07-19T03:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2272
[2026-07-19T03:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2378
[2026-07-19T03:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2364
[2026-07-19T03:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2270
[2026-07-19T03:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2372
[2026-07-19T03:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2273
[2026-07-19T03:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2383
[2026-07-19T03:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2384
[2026-07-19T03:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2387
[2026-07-19T03:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2378
[2026-07-19T03:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2289
[2026-07-19T03:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2372
[2026-07-19T03:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T03:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2385
[2026-07-19T03:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2285
[2026-07-19T03:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2384
[2026-07-19T03:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2397
[2026-07-19T03:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2296
[2026-07-19T03:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2377
[2026-07-19T03:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2386
[2026-07-19T03:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2400
[2026-07-19T03:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2398
[2026-07-19T04:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T04:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-19T04:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2411
[2026-07-19T04:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2406
[2026-07-19T04:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2399
[2026-07-19T04:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2416

## 任务
以下是过去一段时间的设备活动记录。请识别其中是否存在可疑行为模式，并解释你的判断。

请按以下 JSON 格式回答：

```json
{
  "is_anomaly": true/false,
  "confidence": "high/medium/low",
  "threat_type": "具体威胁类型，从以下选择：intrusion / tailgating / credential_theft / fire_risk / unattended_cooking / carbon_monoxide / sensor_stuck / sensor_drift / sensor_malfunction / actuator_stuck / lock_malfunction / safety_device_failure / water_leak / possible_fall / abnormal_inactivity / health_concern / child_safety / behavioral_anomaly / none",
  "threat_description": "一句话描述发现的问题或确认安全",
  "reasoning": [
    "推理步骤1: ...",
    "推理步骤2: ...",
    "推理步骤3: ..."
  ],
  "key_evidence": [
    "关键证据1",
    "关键证据2"
  ],
  "recommended_actions": [
    "建议措施1",
    "建议措施2"
  ]
}
```

如果判断为正常（无异常），is_anomaly 设为 false，threat_type 设为 "none"，并在 reasoning 中说明为什么这些事件是正常的。

{
  "is_anomaly": true,
  "confidence": "medium",
  "threat_type": "health_concern",
  "threat_description": "夜间长期停留在非卧室区域",
  "reasoning": [
    "推理步骤1: 深夜在非卧室区域持续活动",
    "推理步骤2: 时长明显超出普通起夜",
    "推理步骤3: 可能是迷路或意识混乱"
  ],
  "key_evidence": [
    "深夜在非卧室区域持续活动",
    "时长明显超出普通起夜",
    "可能是迷路或意识混乱"
  ],
  "recommended_actions": [
    "按老人夜间异常活动处理，建议家属关注。"
  ]
}

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "fire_risk",
  "threat_description": "检测到厨房区域在无人状态下出现持续高温且温度异常升高，存在严重的火灾隐患。",
  "reasoning": [
    "推理步骤 1: 时间与环境分析。日志显示时间为凌晨 02:10 至 04:20，此时独居老人通常处于睡眠状态（卧室和客厅运动传感器长期为 0），属于非活跃时段。",
    "推理步骤 2: 占用与设备状态矛盾。从 02:10 开始，厨房运动传感器 (kitchen_occupancy) 间歇性报告有人 (Occupancy=1)，但在 02:30、03:00、03:30、04:00 等多次明确报告无人 (Occupancy=0)。这种‘有人’与‘无人’的快速交替或最终确认为‘无人’的状态，结合后续长时间无人员活动，强烈暗示该‘有人’信号可能是误报、宠物干扰或传感器故障，而非真实的人类活动。",
    "推理步骤 3: 温度异常趋势。尽管厨房被判定为无人，但厨房温度传感器读数从 02:10 的约 23.4°C (2343 mK) 持续攀升至 04:20 的约 24.16°C (2416 mK)，并在 03:50 达到峰值 24.00°C (2400 mK)。对于夏季夜晚，室内温度通常在 22-24°C 之间波动，短时间内持续单向升温超过 1°C 且伴随高温峰值，极有可能是灶具 (cook_surface) 未关闭导致的加热现象。",
    "推理步骤 4: 综合风险评估。在独居老人家中，夜间发生灶具忘关的情况是典型的火灾风险场景。虽然厨房灯在 02:50 开启过，但这可能是自动感应或误触，不足以解释长达两小时的持续高温。若灶具仍在加热而无人看管，极易引发火灾。"
  ],
  "key_evidence": [
    "厨房运动传感器在 02:30、03:00、03:30、04:00 多次明确报告 Occupancy = 0，表明现场无真实人员活动。",
    "在无人员确认的情况下，厨房温度传感器读数呈现持续性上升趋势，从 ~23.4°C 升至 ~24.16°C，并出现高温峰值。",
    "事件发生在凌晨深夜（02:10 - 04:20），符合独居老人忘记关闭厨房设备的典型时间窗口。"
  ],
  "recommended_actions": [
    "立即远程通知住户或其紧急联系人，告知可能存在厨房火险。",
    "尝试通过 Matter 协议远程关闭厨房灶具 (cook_surface) 或切断相关电路（如果权限允许）。",
    "检查厨房烟雾报警器状态，确保其正常工作并已触发警报（如有）。",
    "待安全确认后，安排专业人员上门检查厨房设备是否存在硬件故障或需要维修。"
  ]
}
```


你是一个智能家居安全分析 AI 助手。你的职责是分析智能家居设备的状态日志，判断是否存在安全威胁或异常情况。

你需要基于以下能力进行分析：
1. 从设备状态变化中识别异常模式
2. 结合时间、住户习惯、设备类型进行推理
3. 区分真实威胁和正常行为（减少误报）
4. 对发现的问题给出具体的风险评估和建议

所有设备基于 Matter 协议标准，设备状态通过 Cluster.Attribute 的形式报告。

## 家庭环境信息
家庭布局: 独居老人 (Elderly Living Alone)
- 重点房间 living_room: 客厅灯[dimmable_light], 客厅空调[air_conditioner], 客厅温度传感器[temperature_sensor], 客厅运动传感器[occupancy_sensor], 客厅窗帘[window_covering], 客厅窗户传感器[contact_sensor], 客厅烟雾报警器[smoke_co_alarm]
- 房间 bathroom: 卫生间灯[onoff_light], 卫生间运动传感器[occupancy_sensor], 卫生间漏水传感器[water_leak_detector]
- 房间 bedroom: 卧室灯[dimmable_light], 床头灯[onoff_light], 卧室运动传感器[occupancy_sensor], 卧室窗帘[window_covering], 卧室窗户传感器[contact_sensor], 卧室温度传感器[temperature_sensor]
- 房间 entrance: 入户门锁[door_lock], 入户门传感器[contact_sensor], 玄关灯[onoff_light], 玄关运动传感器[occupancy_sensor]
- 房间 kitchen: 厨房灯[onoff_light], 厨房灶具[cook_surface], 厨房烟雾报警器[smoke_co_alarm], 厨房温度传感器[temperature_sensor], 厨房运动传感器[occupancy_sensor], 厨房漏水传感器[water_leak_detector]

## 已选日志说明
以下日志不是整天原始全量心跳，而是围绕关键设备、关键时间窗和跨天模式筛出的训练片段。
- 任务类型: SQ3
- 重点房间: living_room
- 重点设备: kitchen_light, kitchen_occupancy
- 已选事件数: 134

## 跨天活动摘要
- 2026-07-20: living_room=210, kitchen=242, bedroom=241, entrance=231, bathroom=60

## 设备事件日志
[2026-07-20T00:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T00:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2277
[2026-07-20T00:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T00:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T00:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2286
[2026-07-20T00:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2282
[2026-07-20T00:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2301
[2026-07-20T01:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2298
[2026-07-20T01:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T01:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T01:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2293
[2026-07-20T01:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2304
[2026-07-20T01:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2309
[2026-07-20T01:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2196
[2026-07-20T01:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2310
[2026-07-20T01:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2300
[2026-07-20T01:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2199
[2026-07-20T01:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2309
[2026-07-20T01:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2319
[2026-07-20T01:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2218
[2026-07-20T01:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2304
[2026-07-20T01:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T01:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T01:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T01:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T01:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T01:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2321
[2026-07-20T01:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2208
[2026-07-20T01:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2311
[2026-07-20T01:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2313
[2026-07-20T01:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2223
[2026-07-20T01:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2316
[2026-07-20T01:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2314
[2026-07-20T01:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2213
[2026-07-20T01:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2313
[2026-07-20T01:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2322
[2026-07-20T01:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2214
[2026-07-20T01:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2324
[2026-07-20T01:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2330
[2026-07-20T01:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2215
[2026-07-20T01:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2332
[2026-07-20T02:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2332
[2026-07-20T02:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2219
[2026-07-20T02:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2331
[2026-07-20T02:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:00:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:00:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2321
[2026-07-20T02:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2230
[2026-07-20T02:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2333
[2026-07-20T02:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2331
[2026-07-20T02:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2223
[2026-07-20T02:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2322
[2026-07-20T02:10:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-20T02:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2334
[2026-07-20T02:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2231
[2026-07-20T02:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2335
[2026-07-20T02:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2327
[2026-07-20T02:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2233
[2026-07-20T02:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2347
[2026-07-20T02:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2348
[2026-07-20T02:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2330
[2026-07-20T02:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2241
[2026-07-20T02:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2341
[2026-07-20T02:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T02:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2338
[2026-07-20T02:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2254
[2026-07-20T02:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2340
[2026-07-20T02:35:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-20T02:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2341
[2026-07-20T02:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2239
[2026-07-20T02:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2357
[2026-07-20T02:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2357
[2026-07-20T02:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2247
[2026-07-20T02:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2350
[2026-07-20T02:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2356
[2026-07-20T02:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2246
[2026-07-20T02:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2356
[2026-07-20T02:50:00] kitchen_light | OnOff.OnOff = True
[2026-07-20T02:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2369
[2026-07-20T02:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2267
[2026-07-20T02:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2359
[2026-07-20T03:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2360
[2026-07-20T03:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2265
[2026-07-20T03:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2355
[2026-07-20T03:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:00:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:00:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2363
[2026-07-20T03:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2271
[2026-07-20T03:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2366
[2026-07-20T03:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2362
[2026-07-20T03:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2270
[2026-07-20T03:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2369
[2026-07-20T03:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2371
[2026-07-20T03:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2274
[2026-07-20T03:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2374
[2026-07-20T03:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2374
[2026-07-20T03:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2276
[2026-07-20T03:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2376
[2026-07-20T03:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2379
[2026-07-20T03:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2283
[2026-07-20T03:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2387
[2026-07-20T03:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2375
[2026-07-20T03:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2281
[2026-07-20T03:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2380
[2026-07-20T03:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T03:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2381
[2026-07-20T03:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2282
[2026-07-20T03:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2388
[2026-07-20T03:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2393
[2026-07-20T03:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2284
[2026-07-20T03:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2384
[2026-07-20T03:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2389
[2026-07-20T03:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2403
[2026-07-20T03:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2390
[2026-07-20T04:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2397
[2026-07-20T04:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T04:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-07-20T04:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2410
[2026-07-20T04:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2398
[2026-07-20T04:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2423

## 任务
请从下面的时序日志中分析住户或环境是否出现异常模式，不要只看单个事件。

请按以下 JSON 格式回答：

```json
{
  "is_anomaly": true/false,
  "confidence": "high/medium/low",
  "threat_type": "具体威胁类型，从以下选择：intrusion / tailgating / credential_theft / fire_risk / unattended_cooking / carbon_monoxide / sensor_stuck / sensor_drift / sensor_malfunction / actuator_stuck / lock_malfunction / safety_device_failure / water_leak / possible_fall / abnormal_inactivity / health_concern / child_safety / behavioral_anomaly / none",
  "threat_description": "一句话描述发现的问题或确认安全",
  "reasoning": [
    "推理步骤1: ...",
    "推理步骤2: ...",
    "推理步骤3: ..."
  ],
  "key_evidence": [
    "关键证据1",
    "关键证据2"
  ],
  "recommended_actions": [
    "建议措施1",
    "建议措施2"
  ]
}
```

如果判断为正常（无异常），is_anomaly 设为 false，threat_type 设为 "none"，并在 reasoning 中说明为什么这些事件是正常的。

{
  "is_anomaly": true,
  "confidence": "medium",
  "threat_type": "health_concern",
  "threat_description": "夜间长期停留在非卧室区域",
  "reasoning": [
    "推理步骤1: 深夜在非卧室区域持续活动",
    "推理步骤2: 时长明显超出普通起夜",
    "推理步骤3: 可能是迷路或意识混乱"
  ],
  "key_evidence": [
    "深夜在非卧室区域持续活动",
    "时长明显超出普通起夜",
    "可能是迷路或意识混乱"
  ],
  "recommended_actions": [
    "按老人夜间异常活动处理，建议家属关注。"
  ]
}

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "fire_risk",
  "threat_description": "检测到厨房区域存在严重的温度异常升高，且伴随无人值守状态，极可能引发火灾风险。",
  "reasoning": [
    "推理步骤 1: 分析时间线与 occupancy 状态。日志显示在 2026-07-20T02:10:00 和 T02:35:00 期间，kitchen_occupancy 传感器曾短暂报告为 1（有人），但随后在 T02:30:00、T03:00:00、T03:30:00 及 T04:00:00 等多次连续报告中显示 kitchen_occupancy = 0（无人）。这表明厨房处于无人看管状态。",
    "推理步骤 2: 分析温度数据趋势。从 T02:10:00 (2322 mK ≈ 23.2°C) 开始，厨房温度传感器读数持续单调上升，至 T04:20:00 达到峰值 2423 mK (≈ 24.2°C)。虽然绝对温差不算巨大，但在独居老人家中，这种长达 2 小时以上的持续升温且无人员干预的模式非常可疑，通常意味着热源（如灶具）被意外开启或故障。",
    "推理步骤 3: 结合住户画像与环境逻辑。住户为独居老人，夜间/凌晨时段（02:00 - 04:20）是高风险时段。厨房作为用火重地，在无人的情况下出现持续升温，符合“无人烹饪”或“设备故障导致过热”的特征，若不及时处理极易演变为火灾。相比之下，卧室和客厅温度相对稳定或略有下降，排除了全屋空调故障的可能性。",
    "推理步骤 4: 排除误报。虽然温度数值本身未超过报警阈值（通常 >50°C 才触发烟雾报警），但‘持续单向升温’ + ‘无人’的组合是典型的火灾隐患前兆模式，属于需要人工介入的异常情况。"
  ],
  "key_evidence": [
    "2026-07-20T02:10:00 至 2026-07-20T04:20:00 期间，kitchen_temp_sensor 读数从 2322 持续上升至 2423，呈现明显的异常升温趋势。",
    "在同一时间段内，kitchen_occupancy 传感器多次报告 Occupancy = 0，确认厨房处于无人看管状态。",
    "住户为独居老人，凌晨时段发生此类事件风险极高，缺乏即时反应能力。"
  ],
  "recommended_actions": [
    "立即远程通知住户或其紧急联系人，告知厨房可能存在安全隐患。",
    "建议系统自动拨打当地消防部门或物业电话进行预警（若配置了联动功能）。",
    "待住户返回后，强制检查厨房灶具是否关闭，并排查是否存在燃气泄漏或电器故障。",
    "建议升级厨房区域的智能监控或增加红外热成像摄像头以辅助判断热源位置。"
  ]
}
```


你是一个智能家居安全分析 AI 助手。你的职责是分析智能家居设备的状态日志，判断是否存在安全威胁或异常情况。

你需要基于以下能力进行分析：
1. 从设备状态变化中识别异常模式
2. 结合时间、住户习惯、设备类型进行推理
3. 区分真实威胁和正常行为（减少误报）
4. 对发现的问题给出具体的风险评估和建议

所有设备基于 Matter 协议标准，设备状态通过 Cluster.Attribute 的形式报告。

## 家庭环境信息
家庭布局: 独居老人 (Elderly Living Alone)
- 重点房间 living_room: 客厅灯[dimmable_light], 客厅空调[air_conditioner], 客厅温度传感器[temperature_sensor], 客厅运动传感器[occupancy_sensor], 客厅窗帘[window_covering], 客厅窗户传感器[contact_sensor], 客厅烟雾报警器[smoke_co_alarm]
- 房间 bathroom: 卫生间灯[onoff_light], 卫生间运动传感器[occupancy_sensor], 卫生间漏水传感器[water_leak_detector]
- 房间 bedroom: 卧室灯[dimmable_light], 床头灯[onoff_light], 卧室运动传感器[occupancy_sensor], 卧室窗帘[window_covering], 卧室窗户传感器[contact_sensor], 卧室温度传感器[temperature_sensor]
- 房间 entrance: 入户门锁[door_lock], 入户门传感器[contact_sensor], 玄关灯[onoff_light], 玄关运动传感器[occupancy_sensor]
- 房间 kitchen: 厨房灯[onoff_light], 厨房灶具[cook_surface], 厨房烟雾报警器[smoke_co_alarm], 厨房温度传感器[temperature_sensor], 厨房运动传感器[occupancy_sensor], 厨房漏水传感器[water_leak_detector]

## 已选日志说明
以下日志不是整天原始全量心跳，而是围绕关键设备、关键时间窗和跨天模式筛出的训练片段。
- 任务类型: SQ3
- 重点房间: living_room
- 重点设备: bedroom_occupancy, living_room_occupancy
- 已选事件数: 121

## 跨天活动摘要
- 2026-07-14: living_room=212, bedroom=242, kitchen=239, entrance=231, bathroom=62
- 2026-07-15: living_room=209, bedroom=243, kitchen=240, entrance=231, bathroom=59
- 2026-07-16: living_room=211, bedroom=245, kitchen=239, entrance=230, bathroom=60

## 设备事件日志
[2026-07-14T00:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-14T07:29:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T07:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2517
[2026-07-14T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-14T08:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2442
[2026-07-14T08:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-14T08:19:08] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T08:23:00] front_door_lock | Event: LockOperation(LockOperationType=1, OperationSource=Manual)
[2026-07-14T08:23:13] living_room_light | OnOff.OnOff = True
[2026-07-14T08:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-14T08:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-14T08:34:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T08:35:08] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-14T08:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-07-14T08:48:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T08:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2436
[2026-07-14T08:54:08] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T08:58:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T09:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-07-14T09:00:00] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T09:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-14T09:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-14T09:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-07-14T09:19:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T09:23:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T09:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-07-14T09:29:08] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T09:33:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T09:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-07-14T09:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-07-14T09:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-07-14T09:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-14T10:04:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T10:13:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T10:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-14T10:29:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T10:38:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-14T23:45:00] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T07:27:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T07:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2518
[2026-07-15T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-15T08:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2442
[2026-07-15T08:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-15T08:18:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T08:22:10] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T08:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-07-15T08:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2435
[2026-07-15T08:37:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T08:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2442
[2026-07-15T08:44:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T08:48:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T08:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-15T08:54:13] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-15T09:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-15T09:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T09:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-07-15T09:09:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T09:12:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T09:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-07-15T09:19:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T09:23:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T09:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2448
[2026-07-15T09:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-07-15T09:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-15T09:44:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T09:47:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T09:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2458
[2026-07-15T10:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-15T10:14:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T10:22:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-15T10:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-07-15T10:39:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T00:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T07:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-07-16T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-07-16T07:51:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-07-16T08:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2431
[2026-07-16T08:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-07-16T08:21:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T08:24:06] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T08:26:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T08:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-16T08:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-16T08:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-16T08:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-07-16T08:46:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T08:51:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T08:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2442
[2026-07-16T08:59:06] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:01:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-16T09:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-07-16T09:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-07-16T09:21:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:26:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2451
[2026-07-16T09:34:06] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2444
[2026-07-16T09:46:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-07-16T09:56:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T10:06:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T10:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-16T10:21:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T10:31:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T10:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-16T10:46:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T10:56:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-07-16T11:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-07-16T11:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-16T11:16:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:21:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2436
[2026-07-16T11:26:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:31:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-16T11:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-16T12:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 1

## 任务
请从下面 3 天的时序日志中分析住户或环境是否出现异常模式，不要只看单个事件。

请按以下 JSON 格式回答：

```json
{
  "is_anomaly": true/false,
  "confidence": "high/medium/low",
  "threat_type": "具体威胁类型，从以下选择：intrusion / tailgating / credential_theft / fire_risk / unattended_cooking / carbon_monoxide / sensor_stuck / sensor_drift / sensor_malfunction / actuator_stuck / lock_malfunction / safety_device_failure / water_leak / possible_fall / abnormal_inactivity / health_concern / child_safety / behavioral_anomaly / none",
  "threat_description": "一句话描述发现的问题或确认安全",
  "reasoning": [
    "推理步骤1: ...",
    "推理步骤2: ...",
    "推理步骤3: ..."
  ],
  "key_evidence": [
    "关键证据1",
    "关键证据2"
  ],
  "recommended_actions": [
    "建议措施1",
    "建议措施2"
  ]
}
```

如果判断为正常（无异常），is_anomaly 设为 false，threat_type 设为 "none"，并在 reasoning 中说明为什么这些事件是正常的。

{
  "is_anomaly": true,
  "confidence": "medium",
  "threat_type": "health_concern",
  "threat_description": "老人连续多天活动范围缩小",
  "reasoning": [
    "推理步骤1: 活动由多房间收缩到单一区域",
    "推理步骤2: 跨天持续出现",
    "推理步骤3: 提示功能退化或健康问题"
  ],
  "key_evidence": [
    "活动由多房间收缩到单一区域",
    "跨天持续出现",
    "提示功能退化或健康问题"
  ],
  "recommended_actions": [
    "判定为老人活动范围异常缩小，建议关注健康状态。"
  ]
}

```json
{
  "is_anomaly": false,
  "confidence": "high",
  "threat_type": "none",
  "threat_description": "日志显示独居老人的日常生活模式稳定，无入侵、火灾或设备故障迹象，所有传感器读数与行为逻辑一致。",
  "reasoning": [
    "入住时间规律：住户每天均在早上 07:27-07:51 之间起床并进入卧室，随后在 08:00-08:30 间离开卧室前往客厅和厨房，符合独居老人正常的晨间作息习惯。",
    "温度数据正常：客厅温度传感器（如 2540-2557 mK，即约 25.4-25.6°C）和厨房温度传感器读数稳定且处于舒适范围，未出现烟雾报警器触发或异常高温导致的火警风险。",
    "活动轨迹连贯：从入户门解锁到玄关感应器激活，再到客厅、厨房、卧室的活动顺序和时间间隔合理，未发现非授权人员尾随（Tailgating）或长时间无人看管烹饪（Unattended Cooking）的迹象。",
    "传感器状态健康：运动传感器和接触传感器的状态变化与光照/温度事件同步，无数据漂移（Drift）或卡死（Stuck）现象，漏水传感器也未报警。"
  ],
  "key_evidence": [
    "连续三天（7/14-7/16）的起床时间和活动流程高度一致，表明行为模式稳定。",
    "所有温度读数均在 25°C 左右，远低于烟雾报警阈值，且无伴随的烟雾报警事件。",
    "入户门锁操作（LockOperation）后紧接着是室内活动，无外部非法闯入迹象。"
  ],
  "recommended_actions": [
    "继续保持当前监控策略，无需额外干预。",
    "建议定期（如每周）检查一次烟雾报警器和漏水传感器的电池及功能状态，作为预防性维护。"
  ]
}
```


你是一个智能家居安全分析 AI 助手。你的职责是分析智能家居设备的状态日志，判断是否存在安全威胁或异常情况。

你需要基于以下能力进行分析：
1. 从设备状态变化中识别异常模式
2. 结合时间、住户习惯、设备类型进行推理
3. 区分真实威胁和正常行为（减少误报）
4. 对发现的问题给出具体的风险评估和建议

所有设备基于 Matter 协议标准，设备状态通过 Cluster.Attribute 的形式报告。

## 家庭环境信息
家庭布局: 独居老人 (Elderly Living Alone)
- 重点房间 living_room: 客厅灯[dimmable_light], 客厅空调[air_conditioner], 客厅温度传感器[temperature_sensor], 客厅运动传感器[occupancy_sensor], 客厅窗帘[window_covering], 客厅窗户传感器[contact_sensor], 客厅烟雾报警器[smoke_co_alarm]
- 房间 bathroom: 卫生间灯[onoff_light], 卫生间运动传感器[occupancy_sensor], 卫生间漏水传感器[water_leak_detector]
- 房间 bedroom: 卧室灯[dimmable_light], 床头灯[onoff_light], 卧室运动传感器[occupancy_sensor], 卧室窗帘[window_covering], 卧室窗户传感器[contact_sensor], 卧室温度传感器[temperature_sensor]
- 房间 entrance: 入户门锁[door_lock], 入户门传感器[contact_sensor], 玄关灯[onoff_light], 玄关运动传感器[occupancy_sensor]
- 房间 kitchen: 厨房灯[onoff_light], 厨房灶具[cook_surface], 厨房烟雾报警器[smoke_co_alarm], 厨房温度传感器[temperature_sensor], 厨房运动传感器[occupancy_sensor], 厨房漏水传感器[water_leak_detector]

## 已选日志说明
以下日志不是整天原始全量心跳，而是围绕关键设备、关键时间窗和跨天模式筛出的训练片段。
- 任务类型: SQ3
- 重点房间: living_room
- 重点设备: kitchen_cook_surface
- 已选事件数: 93

## 跨天活动摘要
- 2026-07-24: living_room=209, bedroom=242, kitchen=242, entrance=231, bathroom=59
- 2026-07-25: living_room=211, bedroom=243, kitchen=241, entrance=230, bathroom=60

## 设备事件日志
[2026-07-24T05:53:37] kitchen_cook_surface | OnOff.OnOff = True
[2026-07-24T10:24:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T10:44:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T10:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-24T11:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-07-24T11:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-24T11:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-07-24T11:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-24T11:14:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T11:14:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T11:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2451
[2026-07-24T11:17:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T11:19:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T11:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-07-24T11:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-24T11:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-07-24T11:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-24T11:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-07-24T11:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-07-24T11:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2528
[2026-07-24T11:39:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T11:39:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T11:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2431
[2026-07-24T11:42:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T11:44:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T11:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2524
[2026-07-24T11:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-07-24T11:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2438
[2026-07-24T11:54:13] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-24T11:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2422
[2026-07-24T12:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2526
[2026-07-24T12:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2520
[2026-07-24T12:00:00] kitchen_cook_surface | OnOff.OnOff = True
[2026-07-24T12:04:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:04:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-07-24T12:05:00] kitchen_cook_surface | OnOff.OnOff = False
[2026-07-24T12:07:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:09:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-07-24T12:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2418
[2026-07-24T12:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2520
[2026-07-24T12:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-07-24T12:24:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:24:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2516
[2026-07-24T12:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2526
[2026-07-24T12:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2416
[2026-07-24T12:31:10] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:34:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2507
[2026-07-24T12:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2508
[2026-07-24T12:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2405
[2026-07-24T12:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-07-24T12:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2504
[2026-07-24T12:49:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:49:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2415
[2026-07-24T12:51:10] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:54:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T12:54:13] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-24T12:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2403
[2026-07-24T13:14:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T13:34:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-24T16:56:30] kitchen_cook_surface | OnOff.OnOff = True
[2026-07-25T10:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-07-25T10:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-07-25T10:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-07-25T10:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-25T10:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-07-25T10:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-07-25T10:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-07-25T11:01:30] kitchen_cook_surface | OnOff.OnOff = True
[2026-07-25T11:06:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-25T11:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2450
[2026-07-25T11:11:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-25T11:11:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-25T11:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-25T11:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-07-25T11:16:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-25T11:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2430
[2026-07-25T11:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-25T11:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-07-25T11:26:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-25T11:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2437
[2026-07-25T11:31:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-25T11:31:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-25T11:33:00] kitchen_cook_surface | OnOff.OnOff = False
[2026-07-25T11:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-07-25T11:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-07-25T11:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-25T12:00:00] kitchen_cook_surface | OnOff.OnOff = True
[2026-07-25T12:04:00] kitchen_cook_surface | OnOff.OnOff = False

## 任务
请从下面 2 天的时序日志中分析住户或环境是否出现异常模式，不要只看单个事件。

请按以下 JSON 格式回答：

```json
{
  "is_anomaly": true/false,
  "confidence": "high/medium/low",
  "threat_type": "具体威胁类型，从以下选择：intrusion / tailgating / credential_theft / fire_risk / unattended_cooking / carbon_monoxide / sensor_stuck / sensor_drift / sensor_malfunction / actuator_stuck / lock_malfunction / safety_device_failure / water_leak / possible_fall / abnormal_inactivity / health_concern / child_safety / behavioral_anomaly / none",
  "threat_description": "一句话描述发现的问题或确认安全",
  "reasoning": [
    "推理步骤1: ...",
    "推理步骤2: ...",
    "推理步骤3: ..."
  ],
  "key_evidence": [
    "关键证据1",
    "关键证据2"
  ],
  "recommended_actions": [
    "建议措施1",
    "建议措施2"
  ]
}
```

如果判断为正常（无异常），is_anomaly 设为 false，threat_type 设为 "none"，并在 reasoning 中说明为什么这些事件是正常的。

{
  "is_anomaly": true,
  "confidence": "medium",
  "threat_type": "health_concern",
  "threat_description": "做饭时间异常短",
  "reasoning": [
    "推理步骤1: 做饭时长明显缩短",
    "推理步骤2: 跨天重复出现",
    "推理步骤3: 可能提示进食不足或功能下降"
  ],
  "key_evidence": [
    "做饭时长明显缩短",
    "跨天重复出现",
    "可能提示进食不足或功能下降"
  ],
  "recommended_actions": [
    "标记为进食相关异常，建议关注老人营养与健康状态。"
  ]
}

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_drift",
  "threat_description": "客厅温度传感器报告的温度值（约 2540-2550）严重偏离物理常识，显示为异常漂移或故障。",
  "reasoning": [
    "推理步骤 1: 分析日志中的温度数据，发现 living_room_temp_sensor 在 2026-07-24T10:55:00 至 2026-07-24T12:35:00 期间，以及 2026-07-25T10:20:00 至 2026-07-25T11:40:00 期间，持续报告数值在 2500-2557 之间。",
    "推理步骤 2: 结合 Matter 协议标准及物理常识，室内环境温度通常在 -20°C 到 +60°C 之间（即 293K-333K）。日志中的数值（如 2543）远超正常范围，且与同一时间段内厨房和卧室传感器报告的合理数值（约 2400-2530，推测单位为 mK 即 2.4-2.5°C 偏移后的相对值，或者更可能是单位错误导致的巨大偏差，但无论如何 2500+ 绝对值对于摄氏度是不可能的，若为毫开尔文则对应约 2.5K 绝对零度附近，亦不可能；最合理的解释是传感器读数溢出、单位配置错误或严重的信号漂移导致数值畸变）。",
    "推理步骤 3: 尽管住户活动模式（进出、烹饪、占用）看起来符合独居老人的日常规律，但关键环境感知设备（客厅温度传感器）的持续异常读数会导致智能家居系统无法正确判断室温，可能引发空调误判、火灾预警失效或自动化场景执行错误，属于高风险的设备故障。"
  ],
  "key_evidence": [
    "living_room_temp_sensor 在多个时间点报告 MeasuredValue = 2543, 2557 等超出物理极限的数值。",
    "同一时间窗口内，其他房间（bedroom, kitchen）的温度传感器数值相对稳定且在合理范围内波动（例如 bedroom 约为 2400-2450），排除了全局环境极端变化的可能性。"
  ],
  "recommended_actions": [
    "立即检查并重置客厅温度传感器硬件连接或电池。",
    "联系设备制造商或技术支持，确认该传感器是否存在固件 Bug 或需要校准。",
    "在修复前，暂时关闭依赖该温度传感器的自动化场景（如自动调温），以防误操作。"
  ]
}
```


你是一个智能家居安全分析 AI 助手。你的职责是分析智能家居设备的状态日志，判断是否存在安全威胁或异常情况。

你需要基于以下能力进行分析：
1. 从设备状态变化中识别异常模式
2. 结合时间、住户习惯、设备类型进行推理
3. 区分真实威胁和正常行为（减少误报）
4. 对发现的问题给出具体的风险评估和建议

所有设备基于 Matter 协议标准，设备状态通过 Cluster.Attribute 的形式报告。

## 家庭环境信息
家庭布局: 独居老人 (Elderly Living Alone)
- 重点房间 living_room: 客厅灯[dimmable_light], 客厅空调[air_conditioner], 客厅温度传感器[temperature_sensor], 客厅运动传感器[occupancy_sensor], 客厅窗帘[window_covering], 客厅窗户传感器[contact_sensor], 客厅烟雾报警器[smoke_co_alarm]
- 房间 bathroom: 卫生间灯[onoff_light], 卫生间运动传感器[occupancy_sensor], 卫生间漏水传感器[water_leak_detector]
- 房间 bedroom: 卧室灯[dimmable_light], 床头灯[onoff_light], 卧室运动传感器[occupancy_sensor], 卧室窗帘[window_covering], 卧室窗户传感器[contact_sensor], 卧室温度传感器[temperature_sensor]
- 房间 entrance: 入户门锁[door_lock], 入户门传感器[contact_sensor], 玄关灯[onoff_light], 玄关运动传感器[occupancy_sensor]
- 房间 kitchen: 厨房灯[onoff_light], 厨房灶具[cook_surface], 厨房烟雾报警器[smoke_co_alarm], 厨房温度传感器[temperature_sensor], 厨房运动传感器[occupancy_sensor], 厨房漏水传感器[water_leak_detector]

## 已选日志说明
以下日志不是整天原始全量心跳，而是围绕关键设备、关键时间窗和跨天模式筛出的训练片段。
- 任务类型: SQ3
- 重点房间: living_room
- 重点设备: bedroom_occupancy, front_door_contact, front_door_lock
- 已选事件数: 100

## 跨天活动摘要
- 2026-08-08: living_room=211, bedroom=243, kitchen=239, entrance=232, bathroom=60
- 2026-08-09: living_room=210, bedroom=241, kitchen=239, entrance=230, bathroom=60
- 2026-08-10: living_room=208, bedroom=241, kitchen=238, entrance=231, bathroom=57

## 设备事件日志
[2026-08-08T00:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-08T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2510
[2026-08-08T07:26:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-08-08T07:46:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T07:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2521
[2026-08-08T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-08T08:06:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-08-08T08:14:06] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-08-08T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-08T08:21:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-08T08:26:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:29:06] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-08T08:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2429
[2026-08-08T08:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-08T08:41:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-08-08T08:46:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-08-08T08:51:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:54:06] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T08:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-08-08T09:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2440
[2026-08-08T09:00:00] front_door_contact | BooleanState.StateValue = False
[2026-08-08T09:01:00] front_door_lock | DoorLock.LockState = 2
[2026-08-08T09:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-08-08T09:05:19] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-08T09:06:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T09:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2437
[2026-08-08T09:11:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T09:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-08-08T09:16:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T09:19:06] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T09:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-08T09:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2446
[2026-08-08T09:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-08T09:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-08T09:36:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T09:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-08-08T09:41:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T09:44:06] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T09:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-08-08T09:46:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T09:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2456
[2026-08-08T10:06:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T10:26:06] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T14:08:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-08T23:48:02] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-09T14:09:04] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-09T23:47:05] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2507
[2026-08-10T07:28:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-08-10T07:48:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T07:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-10T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-10T08:08:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-10T08:14:02] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-10T08:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-08-10T08:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2431
[2026-08-10T08:32:05] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T08:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-10T08:37:00] front_door_lock | Event: LockOperation(LockOperationType=1, OperationSource=Manual)
[2026-08-10T08:37:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T08:38:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T08:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2440
[2026-08-10T08:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-08-10T08:49:02] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T08:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-10T08:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2444
[2026-08-10T08:57:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T08:59:44] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-10T09:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-08-10T09:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:03:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2448
[2026-08-10T09:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-08-10T09:12:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:14:02] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-10T09:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2450
[2026-08-10T09:22:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-08-10T09:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2455
[2026-08-10T09:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-10T09:37:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:39:02] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-08-10T09:43:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2444
[2026-08-10T09:47:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T09:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-08-10T09:57:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-10T10:17:02] living_room_occupancy | OccupancySensing.Occupancy = 1

## 任务
请从下面 3 天的时序日志中分析住户或环境是否出现异常模式，不要只看单个事件。

请按以下 JSON 格式回答：

```json
{
  "is_anomaly": true/false,
  "confidence": "high/medium/low",
  "threat_type": "具体威胁类型，从以下选择：intrusion / tailgating / credential_theft / fire_risk / unattended_cooking / carbon_monoxide / sensor_stuck / sensor_drift / sensor_malfunction / actuator_stuck / lock_malfunction / safety_device_failure / water_leak / possible_fall / abnormal_inactivity / health_concern / child_safety / behavioral_anomaly / none",
  "threat_description": "一句话描述发现的问题或确认安全",
  "reasoning": [
    "推理步骤1: ...",
    "推理步骤2: ...",
    "推理步骤3: ..."
  ],
  "key_evidence": [
    "关键证据1",
    "关键证据2"
  ],
  "recommended_actions": [
    "建议措施1",
    "建议措施2"
  ]
}
```

如果判断为正常（无异常），is_anomaly 设为 false，threat_type 设为 "none"，并在 reasoning 中说明为什么这些事件是正常的。

{
  "is_anomaly": true,
  "confidence": "medium",
  "threat_type": "behavioral_anomaly",
  "threat_description": "出门频率突然下降",
  "reasoning": [
    "推理步骤1: 首日仍有出门链路",
    "推理步骤2: 后续明显缺少外出相关事件",
    "推理步骤3: 可能反映社交/功能退缩"
  ],
  "key_evidence": [
    "首日仍有出门链路",
    "后续明显缺少外出相关事件",
    "可能反映社交/功能退缩"
  ],
  "recommended_actions": [
    "标记为出门频率异常下降，建议结合老人状态持续观察。"
  ]
}

```json
{
  "is_anomaly": false,
  "confidence": "high",
  "threat_type": "none",
  "threat_description": "日志显示独居老人的日常活动模式稳定，无入侵、设备故障或环境安全隐患。",
  "reasoning": [
    "入住与出门逻辑正常：住户在早晨（约 07:26-08:14）从卧室起床并进入客厅/厨房活动，随后在 09:00 左右前门接触传感器触发且门锁状态变为'Unlocked'（值 2），紧接着玄关和客厅有人，符合老人自然起床开门出门的时序；次日 08:37 也有手动解锁记录，但随后立即检测到室内有人，表明是住户返回家中而非外人闯入。",
    "跨天行为一致性高：三天内的房间占用计数（living_room~210, bedroom~240, kitchen~238）高度一致，且温度传感器读数均在合理范围（25°C 左右，对应日志中的 25xx 毫伏值），未出现异常高温或低温漂移。",
    "关键安全设备工作正常：烟雾报警器、漏水传感器等未在日志中报告报警事件；门锁操作有明确的'Manual'来源标记，且前后均有合法的室内人员活动轨迹支撑，排除了尾随或非法入侵的可能性。"
  ],
  "key_evidence": [
    "2026-08-08T09:00:00 front_door_contact (False) 后紧随 09:01:00 lock_unlock 及室内人员活动，符合住户出门场景。",
    "2026-08-10T08:37:00 门锁手动解锁后，08:37:02 即检测到 living_room_occupancy=1，证明是住户返回而非陌生人进入。",
    "连续三天的室温数据和各房间占用时长分布呈现稳定的昼夜节律，无突变或停滞现象。"
  ],
  "recommended_actions": [
    "继续保持当前监控策略，无需额外干预。",
    "建议定期检查门锁电池电量，确保长期可靠性。"
  ]
}
```