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: SQ4
- 重点房间: living_room
- 重点设备: kitchen_light, kitchen_occupancy
- 已选事件数: 139

## 跨天活动摘要
- 2026-08-16: living_room=209, bedroom=243, kitchen=242, entrance=229, bathroom=63

## 设备事件日志
[2026-08-16T00:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T00:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2275
[2026-08-16T00:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2268
[2026-08-16T00:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2270
[2026-08-16T00:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2285
[2026-08-16T00:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2272
[2026-08-16T00:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T00:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T00:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2282
[2026-08-16T00:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2291
[2026-08-16T00:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2284
[2026-08-16T00:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2295
[2026-08-16T00:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2293
[2026-08-16T01:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2296
[2026-08-16T01:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T01:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T01:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2301
[2026-08-16T01:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2290
[2026-08-16T01:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2199
[2026-08-16T01:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2295
[2026-08-16T01:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2307
[2026-08-16T01:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2200
[2026-08-16T01:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2296
[2026-08-16T01:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2300
[2026-08-16T01:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2205
[2026-08-16T01:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2305
[2026-08-16T01:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2313
[2026-08-16T01:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2212
[2026-08-16T01:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2297
[2026-08-16T01:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2318
[2026-08-16T01:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2214
[2026-08-16T01:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2312
[2026-08-16T01:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T01:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T01:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T01:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T01:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T01:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2219
[2026-08-16T01:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2306
[2026-08-16T01:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2321
[2026-08-16T01:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2223
[2026-08-16T01:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2317
[2026-08-16T01:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2316
[2026-08-16T01:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2211
[2026-08-16T01:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2324
[2026-08-16T01:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2310
[2026-08-16T01:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2333
[2026-08-16T01:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2215
[2026-08-16T01:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2318
[2026-08-16T02:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2326
[2026-08-16T02:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2225
[2026-08-16T02:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2328
[2026-08-16T02:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:00:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:00:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2322
[2026-08-16T02:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2234
[2026-08-16T02:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2337
[2026-08-16T02:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2338
[2026-08-16T02:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2226
[2026-08-16T02:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2334
[2026-08-16T02:10:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-16T02:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2336
[2026-08-16T02:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2239
[2026-08-16T02:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2345
[2026-08-16T02:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2346
[2026-08-16T02:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2332
[2026-08-16T02:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2232
[2026-08-16T02:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2335
[2026-08-16T02:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2353
[2026-08-16T02:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2250
[2026-08-16T02:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2339
[2026-08-16T02:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T02:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2251
[2026-08-16T02:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2344
[2026-08-16T02:35:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-16T02:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2356
[2026-08-16T02:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2258
[2026-08-16T02:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2360
[2026-08-16T02:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2246
[2026-08-16T02:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2358
[2026-08-16T02:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2351
[2026-08-16T02:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2255
[2026-08-16T02:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2346
[2026-08-16T02:50:00] kitchen_light | OnOff.OnOff = True
[2026-08-16T02:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2369
[2026-08-16T02:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2261
[2026-08-16T02:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2365
[2026-08-16T03:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2362
[2026-08-16T03:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2268
[2026-08-16T03:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2372
[2026-08-16T03:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:00:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:00:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2358
[2026-08-16T03:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2262
[2026-08-16T03:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2360
[2026-08-16T03:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2364
[2026-08-16T03:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2272
[2026-08-16T03:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2371
[2026-08-16T03:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2266
[2026-08-16T03:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2378
[2026-08-16T03:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2375
[2026-08-16T03:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2373
[2026-08-16T03:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2269
[2026-08-16T03:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2369
[2026-08-16T03:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2372
[2026-08-16T03:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2289
[2026-08-16T03:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2373
[2026-08-16T03:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:30:00] entrance_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T03:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2389
[2026-08-16T03:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2286
[2026-08-16T03:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2385
[2026-08-16T03:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2377
[2026-08-16T03:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2288
[2026-08-16T03:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2389
[2026-08-16T03:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2394
[2026-08-16T03:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2290
[2026-08-16T03:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2399
[2026-08-16T03:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2296
[2026-08-16T03:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2400
[2026-08-16T03:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2402
[2026-08-16T04:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2395
[2026-08-16T04:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T04:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 0
[2026-08-16T04:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2401
[2026-08-16T04:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2415

## 任务
你将看到一组跨设备日志。请做综合安全分析，而不是单点判断。

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": "检测到厨房区域存在严重的温度异常升高，且伴随无人值守状态，极高风险引发火灾。",
  "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 04:10，属于独居老人的夜间睡眠时段。在此期间，所有房间（包括客厅、卧室、卫生间、玄关）的运动传感器均持续报告 Occupancy = 0，确认屋内无人。",
    "推理步骤 2: 设备状态异常分析。厨房运动传感器在 02:10 短暂报告为 1（可能为误报或宠物/老鼠），但在 02:35 再次报告为 1 后，从 02:50 开始持续报告为 0。然而，厨房温度传感器读数却呈现持续且剧烈的上升趋势：从 02:10 的 23.34°C (2334 mK) 一路攀升至 04:10 的 24.15°C (2415 mK)，增幅接近 8°C。",
    "推理步骤 3: 威胁关联与排除。虽然厨房灯在 02:50 开启，但仅开灯通常不会导致室温在短时间内急剧上升 8 度。结合‘无人’和‘高温’两个关键特征，最可能的原因是灶具（cook_surface）处于开启加热状态但未有人看管，或者发生了其他热源故障。对于独居老人而言，夜间无人看管的烹饪是典型的火灾隐患。",
    "推理步骤 4: 结论。尽管烟雾报警器未触发报警（可能是阈值未到或尚未达到烟雾浓度），但温度的异常飙升已构成明确的‘无人看管烹饪’导致的火灾风险（unattended_cooking/fire_risk）。"
  ],
  "key_evidence": [
    "02:10 - 04:10 期间，厨房温度从 23.34°C 持续上升至 24.15°C，升温速率异常。",
    "同一时间段内，全屋（含厨房）运动传感器绝大多数时间为 0，表明无人在场进行干预。",
    "厨房灯光在 02:50 开启，但不足以解释如此大幅度的温升，暗示有更强的热源（如灶具）在工作。"
  ],
  "recommended_actions": [
    "立即远程通知住户或其紧急联系人，告知厨房可能存在过热或无人看管烹饪的情况。",
    "检查并重置厨房烟雾报警器，确保其处于正常工作状态。",
    "建议系统自动切断厨房非必要的电源（如灶具供电），若具备此 Matter 能力。",
    "安排社区工作人员或邻居上门查看情况，以防发生火情。"
  ]
}
```


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: 120

## 跨天活动摘要
- 2026-07-16: living_room=209, bedroom=241, kitchen=240, entrance=229, bathroom=62
- 2026-07-17: living_room=210, kitchen=241, bedroom=240, entrance=230, bathroom=56
- 2026-07-18: living_room=209, bedroom=240, kitchen=239, entrance=231, bathroom=62

## 设备事件日志
[2026-07-16T06:02:10] kitchen_light | OnOff.OnOff = True
[2026-07-16T10:31:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T10:51:00] kitchen_light | OnOff.OnOff = True
[2026-07-16T11:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-07-16T11:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-07-16T11:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-16T11:18:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:21:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-16T11:26:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:33:32] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T11:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-07-16T11:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-07-16T11:46:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-16T11:53:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:56:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-07-16T12:01:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-07-16T12:05:00] kitchen_light | OnOff.OnOff = True
[2026-07-16T12:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2420
[2026-07-16T12:11:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2520
[2026-07-16T12:18:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:21:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2528
[2026-07-16T12:26:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2414
[2026-07-16T12:31:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2509
[2026-07-16T12:39:08] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:41:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2512
[2026-07-16T12:46:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2402
[2026-07-16T12:51:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T12:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2517
[2026-07-16T13:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2499
[2026-07-16T13:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2494
[2026-07-16T13:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2495
[2026-07-16T13:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2492
[2026-07-17T12:44:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T13:04:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T13:24:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T13:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2390
[2026-07-17T13:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2492
[2026-07-17T13:39:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T13:40:02] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T13:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2492
[2026-07-17T13:46:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T13:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2383
[2026-07-17T13:54:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T13:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2467
[2026-07-17T14:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2482
[2026-07-17T14:04:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2469
[2026-07-17T14:06:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:15:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2458
[2026-07-17T14:20:00] kitchen_light | OnOff.OnOff = True
[2026-07-17T14:20:19] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2370
[2026-07-17T14:25:55] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-17T14:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2361
[2026-07-17T14:31:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2447
[2026-07-17T14:39:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:40:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2448
[2026-07-17T14:45:19] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2337
[2026-07-17T14:51:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T14:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2440
[2026-07-17T15:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2444
[2026-07-17T15:04:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T15:05:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T15:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2423
[2026-07-17T15:10:19] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T15:30:19] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-17T15:50:19] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T06:05:07] kitchen_light | OnOff.OnOff = True
[2026-07-18T15:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-07-18T15:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2439
[2026-07-18T15:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2428
[2026-07-18T15:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2411
[2026-07-18T15:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2408
[2026-07-18T15:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2416
[2026-07-18T15:50:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T15:55:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2400
[2026-07-18T16:00:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2301
[2026-07-18T16:05:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2297
[2026-07-18T16:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2395
[2026-07-18T16:15:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:20:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2391
[2026-07-18T16:25:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2277
[2026-07-18T16:30:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2380
[2026-07-18T16:35:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2370
[2026-07-18T16:40:00] kitchen_light | OnOff.OnOff = True
[2026-07-18T16:45:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2365
[2026-07-18T16:50:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T16:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2261
[2026-07-18T16:55:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T17:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2361
[2026-07-18T17:00:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T17:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2262
[2026-07-18T17:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2353
[2026-07-18T17:10:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T17:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2249
[2026-07-18T17:15:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-18T17:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2346
[2026-07-18T17:20:12] living_room_occupancy | OccupancySensing.Occupancy = 1

## 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": "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": false,
  "confidence": "high",
  "threat_type": "none",
  "threat_description": "设备日志显示独居老人的日常活动模式正常，无入侵、火灾或设备故障迹象。",
  "reasoning": [
    "1. 人员活动规律性分析：日志中卧室 (bedroom) 和客厅 (living_room) 的占用传感器在白天（约 10:30 - 17:20）持续报告有人 (Occupancy=1)，且夜间/清晨时段无异常长时间无人状态，符合独居老人正常的作息习惯。",
    "2. 温度数据合理性校验：所有温度传感器读数均在合理范围内（例如 living_room_temp_sensor 读数为 2553-2492，对应约 25.5°C - 24.9°C；bedroom_temp_sensor 读数为 2441-2249，对应约 24.4°C - 22.5°C）。Matter 协议通常以 0.01°C 为单位，因此这些数值代表正常的室温波动，未出现代表高温报警的极端值（如 >6000 或 <0），排除了 sensor_drift 或 fire_risk。",
    "3. 关键设备行为验证：厨房灯 (kitchen_light) 仅在特定时间点开启（如 06:02, 12:05, 14:20, 16:40），且伴随厨房占用信号，未见灶具 (cook_surface) 异常开启或烟雾报警器触发，排除 unattended_cooking 和 fire_risk。",
    "4. 安全设备状态确认：入户门传感器 (entrance_occupancy) 频繁检测到人员进出，但未见门锁 (door_lock) 被非法操作记录或长时间未锁定的异常模式；漏水传感器 (water_leak_detector) 未在日志中报告触发事件。"
  ],
  "key_evidence": [
    "卧室和客厅占用传感器在白天持续报告有人，夜间无异常长时间空置。",
    "所有温度传感器读数处于舒适居住区间（约 22°C-26°C），无过热或过冷异常。",
    "厨房灯光开启时间与厨房占用时间高度重合，且无烟雾报警触发记录。"
  ],
  "recommended_actions": [
    "继续保持当前监控策略，无需立即干预。",
    "建议定期查看独居老人的健康状态，若连续多日无卧室夜间活动记录，可考虑远程关怀提醒。"
  ]
}
```


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: 116

## 跨天活动摘要
- 2026-08-19: living_room=210, kitchen=241, bedroom=240, entrance=230, bathroom=56
- 2026-08-20: living_room=209, bedroom=240, kitchen=239, entrance=231, bathroom=62
- 2026-08-21: living_room=210, bedroom=242, kitchen=241, entrance=231, bathroom=60

## 设备事件日志
[2026-08-19T05:54:03] kitchen_light | OnOff.OnOff = True
[2026-08-19T10:34:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T10:51:00] kitchen_light | OnOff.OnOff = True
[2026-08-19T11:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-19T11:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-08-19T11:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-19T11:19:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T11:21:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T11:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-08-19T11:29:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T11:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-19T11:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-08-19T11:42:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T11:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2442
[2026-08-19T11:49:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T11:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-08-19T11:54:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T11:55:55] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-19T12:01:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T12:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2528
[2026-08-19T12:05:00] kitchen_light | OnOff.OnOff = True
[2026-08-19T12:07:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T12:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2419
[2026-08-19T12:14:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T12:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2524
[2026-08-19T12:19:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T12:21:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T12:25:00] living_room_light | OnOff.OnOff = False
[2026-08-19T12:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2517
[2026-08-19T12:35:02] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T12:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2505
[2026-08-19T12:41:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T12:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2415
[2026-08-19T12:49:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T12:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2509
[2026-08-19T12:54:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T13:09:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T13:29:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-19T17:04:00] kitchen_light | OnOff.OnOff = True
[2026-08-20T12:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2510
[2026-08-20T12:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2513
[2026-08-20T13:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2495
[2026-08-20T13:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2504
[2026-08-20T13:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2486
[2026-08-20T13:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2488
[2026-08-20T13:33:04] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T13:35:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T13:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2476
[2026-08-20T13:45:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T13:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2377
[2026-08-20T13:50:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T13:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2486
[2026-08-20T13:58:04] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2469
[2026-08-20T14:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2369
[2026-08-20T14:05:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2379
[2026-08-20T14:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2465
[2026-08-20T14:15:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:20:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:20:00] kitchen_light | OnOff.OnOff = True
[2026-08-20T14:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2458
[2026-08-20T14:25:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2366
[2026-08-20T14:30:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2449
[2026-08-20T14:35:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2450
[2026-08-20T14:45:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-08-20T14:50:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T14:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2338
[2026-08-20T14:55:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T15:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2433
[2026-08-20T15:00:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T15:05:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T15:05:47] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-20T15:25:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-20T15:45:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T15:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-08-21T15:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2430
[2026-08-21T15:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2424
[2026-08-21T15:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2418
[2026-08-21T15:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2410
[2026-08-21T15:52:26] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-21T15:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2405
[2026-08-21T15:58:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2303
[2026-08-21T16:04:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2400
[2026-08-21T16:09:18] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:12:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2393
[2026-08-21T16:18:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2277
[2026-08-21T16:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2276
[2026-08-21T16:29:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2376
[2026-08-21T16:34:18] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:37:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2379
[2026-08-21T16:40:00] kitchen_light | OnOff.OnOff = True
[2026-08-21T16:43:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2281
[2026-08-21T16:49:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T16:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2363
[2026-08-21T16:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2358
[2026-08-21T16:59:18] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T17:01:00] kitchen_light | OnOff.OnOff = True
[2026-08-21T17:03:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T17:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2255
[2026-08-21T17:09:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T17:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2348
[2026-08-21T17:16:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T17:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2355
[2026-08-21T17:22:26] bathroom_occupancy | OccupancySensing.Occupancy = 0

## 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": "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": false,
  "confidence": "high",
  "threat_type": "none",
  "threat_description": "设备日志显示独居老人的日常活动模式正常，无入侵、火灾或设备故障迹象。",
  "reasoning": [
    "时间线分析：所有事件（如厨房开灯、温度变化、人员进出）均发生在合理的白天时段（05:54 - 17:22），符合独居老人起床、做饭、休息和外出/回家的常规作息，未发现深夜异常活动或非授权进入迹象。",
    "数据合理性检查：温度传感器读数（例如 living_room_temp_sensor 的 2541 代表 25.41°C）在夏季高温环境下属于正常范围，且数值随时间有合理的波动趋势，未出现传感器卡死（sensor_stuck）或漂移（sensor_drift）导致的恒定异常值。",
    "行为逻辑验证：运动传感器（occupancy）与灯光控制（light OnOff）之间存在合理的因果关联（人进屋开灯，人离开关灯），且各房间的人员分布逻辑自洽（如卧室有人时卧室灯可能亮，厨房有人时灶具区域活跃），未见矛盾行为。",
    "安全设备状态：烟雾报警器（smoke_co_alarm）和漏水传感器（water_leak_detector）在日志中未触发报警事件，结合正常的温度和湿度读数，可推断这些关键安全设备工作正常。"
  ],
  "key_evidence": [
    "所有 OccupancySensing.Occupancy = 1 的事件均伴随合理的日间活动时间戳，且与 OnOff.Light 开关事件逻辑一致。",
    "TemperatureMeasurement.MeasuredValue 数值稳定且在合理物理范围内（约 23-26°C），无突变或停滞现象。",
    "跨天摘要显示各房间活动量（Event Count）保持相对稳定，符合独居老人规律的生活节奏。"
  ],
  "recommended_actions": [
    "继续保持当前监控策略，无需立即干预。",
    "建议定期（如每周）手动检查入户门锁电池及烟雾报警器功能，确保硬件可靠性。",
    "若老人健康状况允许，可考虑增加非侵入式健康监测（如跌倒检测算法优化），但当前数据不支持此类警报。"
  ]
}
```


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: bedroom_occupancy, front_door_contact, front_door_lock
- 已选事件数: 99

## 跨天活动摘要
- 2026-08-21: living_room=209, bedroom=240, kitchen=238, entrance=233, bathroom=62
- 2026-08-22: living_room=210, bedroom=242, kitchen=240, entrance=231, bathroom=60
- 2026-08-23: living_room=208, bedroom=241, kitchen=239, entrance=231, bathroom=65

## 设备事件日志
[2026-08-21T00:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-21T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2521
[2026-08-21T07:29:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2527
[2026-08-21T07:49:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T07:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-08-21T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-21T08:09:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-08-21T08:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-08-21T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-08-21T08:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-08-21T08:29:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T08:31:09] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T08:35:00] front_door_lock | DoorLock.LockState = 2
[2026-08-21T08:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-08-21T08:35:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T08:35:47] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-21T08:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2443
[2026-08-21T08:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-08-21T08:49:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T08:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-08-21T08:50:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T08:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-08-21T08:55:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-08-21T09:00:00] front_door_contact | BooleanState.StateValue = False
[2026-08-21T09:00:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:01:00] front_door_lock | DoorLock.LockState = 2
[2026-08-21T09:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-08-21T09:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-21T09:14:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-08-21T09:15:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2439
[2026-08-21T09:20:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-21T09:25:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-21T09:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2447
[2026-08-21T09:39:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-21T09:40:09] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:45:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:50:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T09:59:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T10:19:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T10:39:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-21T14:20:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T00:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-22T14:14:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T00:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-23T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2520
[2026-08-23T07:29:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2513
[2026-08-23T07:49:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T07:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-08-23T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-23T08:09:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-08-23T08:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-23T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-08-23T08:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-08-23T08:29:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T08:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-23T08:32:05] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T08:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2438
[2026-08-23T08:35:40] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-23T08:40:00] front_door_lock | Event: LockOperation(LockOperationType=1, OperationSource=Manual)
[2026-08-23T08:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2446
[2026-08-23T08:40:14] living_room_light | OnOff.OnOff = True
[2026-08-23T08:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-08-23T08:45:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T08:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-23T08:54:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T08:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-23T08:55:08] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2449
[2026-08-23T09:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-23T09:05:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:05:40] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-23T09:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2444
[2026-08-23T09:10:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-08-23T09:19:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-23T09:20:08] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2439
[2026-08-23T09:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-23T09:30:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-23T09:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-23T09:44:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-08-23T09:45:08] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T09:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-08-23T10:04:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-23T10:24:00] bedroom_occupancy | OccupancySensing.Occupancy = 1

## 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": "过去三天的设备日志显示独居老人的日常活动模式稳定，无入侵、异常操作或设备故障迹象。",
  "reasoning": [
    "入住与出门时间规律：老人每天约在 07:29-08:09 之间起床（卧室 occupancy 变为 1），并在 08:35-09:00 之间离开家（门锁解锁/开门，前门接触传感器状态变化），且每日重复此模式，符合正常作息。",
    "室内活动逻辑自洽：当老人进入厨房或客厅时，对应房间的运动传感器和温度传感器均有响应；离开后传感器状态随之改变，未发现人员滞留或传感器卡死现象。",
    "安全设备工作正常：烟雾报警器、漏水传感器等未触发报警事件；门锁操作记录显示均为手动正常开锁/上锁，无非法尝试或锁定失败记录。"
  ],
  "key_evidence": [
    "连续三天 (2026-08-21 至 2026-08-23) 的起床和出门时间高度一致，表明行为模式稳定。",
    "所有运动传感器（occupancy_sensor）的状态变化与温度传感器（temperature_sensor）及灯光设备的激活时间吻合，排除了传感器漂移或故障。",
    "入户门锁（front_door_lock）仅在预期出门时间被操作，且随后前门接触传感器（front_door_contact）正确报告开门状态，无异常闯入痕迹。"
  ],
  "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电量及功能测试，确保长期可靠性。"
  ]
}
```


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: bedroom_occupancy, front_door_contact, front_door_lock
- 已选事件数: 104

## 跨天活动摘要
- 2026-08-12: living_room=210, bedroom=242, kitchen=240, entrance=233, bathroom=60
- 2026-08-13: living_room=208, bedroom=240, kitchen=239, entrance=231, bathroom=65
- 2026-08-14: living_room=208, bedroom=243, kitchen=239, entrance=231, bathroom=58

## 设备事件日志
[2026-08-12T00:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-12T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2504
[2026-08-12T07:27:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-08-12T07:47:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T07:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-08-12T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-12T08:07:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-08-12T08:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-12T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-08-12T08:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2439
[2026-08-12T08:26:09] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T08:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2448
[2026-08-12T08:31:02] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T08:33:00] front_door_lock | Event: LockOperation(LockOperationType=1, OperationSource=Manual)
[2026-08-12T08:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-08-12T08:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-12T08:43:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T08:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-08-12T08:47:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T08:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-08-12T08:51:02] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T08:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2440
[2026-08-12T09:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-12T09:00:00] front_door_contact | BooleanState.StateValue = False
[2026-08-12T09:01:00] front_door_lock | DoorLock.LockState = 2
[2026-08-12T09:03:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T09:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-12T09:08:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T09:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2438
[2026-08-12T09:12:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T09:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-12T09:16:02] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T09:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-08-12T09:22:26] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-12T09:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-12T09:28:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T09:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-12T09:33:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T09:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-08-12T09:37:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T09:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2558
[2026-08-12T09:41:02] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T09:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-12T09:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2456
[2026-08-12T09:53:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T10:13:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T10:33:03] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-12T20:43:14] front_door_contact | BooleanState.StateValue = True
[2026-08-13T06:52:11] front_door_contact | BooleanState.StateValue = True
[2026-08-13T20:51:17] front_door_contact | BooleanState.StateValue = True
[2026-08-14T07:02:13] front_door_contact | BooleanState.StateValue = True
[2026-08-14T07:24:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T07:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2511
[2026-08-14T07:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2518
[2026-08-14T07:44:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T07:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2516
[2026-08-14T08:04:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T08:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-08-14T08:12:12] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T08:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2526
[2026-08-14T08:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-14T08:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-14T08:29:17] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-14T08:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-14T08:33:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T08:34:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T08:34:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T08:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2435
[2026-08-14T08:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-08-14T08:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-08-14T08:49:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T08:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2443
[2026-08-14T08:54:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T08:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-14T08:58:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T08:59:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2437
[2026-08-14T09:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-08-14T09:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-08-14T09:14:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:19:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-14T09:23:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:24:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-14T09:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-14T09:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2558
[2026-08-14T09:39:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2439
[2026-08-14T09:44:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-08-14T09:48:07] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:49:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-14T09:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-08-14T09:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-14T10:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-14T10:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-08-14T10:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-14T10:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-08-14T10:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-14T10:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555

## 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正常，无入侵、设备故障或环境安全隐患。",
  "reasoning": [
    "入住与出门时间规律：前门接触传感器（front_door_contact）在每天早晨约 07:00-09:00 之间检测到开门进入，晚上约 20:43-20:51 检测到关门离开，且连续三天时间窗口高度一致，符合独居老人的正常作息习惯。",
    "室内活动逻辑自洽：卧室占用传感器（bedroom_occupancy）在老人起床后不久（约 07:27-08:00）变为有人状态，随后客厅和厨房频繁出现人员活动，表明老人已开始在屋内活动，不存在长时间无人导致的异常静默。",
    "设备状态健康：门锁操作记录（LockOperation）显示为手动上锁，状态正常；温度传感器读数稳定在合理范围（约 24.4°C - 25.6°C），未出现漂移或故障跳变；未见漏水、烟雾报警等安全设备触发事件。"
  ],
  "key_evidence": [
    "2026-08-12T09:00:00 front_door_contact StateValue=False (出门) 与 2026-08-12T20:43:14 front_door_contact StateValue=True (回家) 的时间间隔符合夜间休息时长。",
    "2026-08-12T07:27:00 bedroom_occupancy=1 紧随 07:20:00 的起床迹象，且后续 kitchen/living_room 均有高频活动记录，证明是住户本人活动而非外人闯入。"
  ],
  "recommended_actions": [
    "继续保持当前监控策略，无需额外干预。",
    "建议定期检查老人身体健康状况，确保其日常生活自理能力稳定。"
  ]
}
```


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: 94

## 跨天活动摘要
- 2026-08-17: living_room=208, kitchen=241, bedroom=240, entrance=231, bathroom=65
- 2026-08-18: living_room=208, bedroom=242, kitchen=241, entrance=231, bathroom=58

## 设备事件日志
[2026-08-17T06:05:38] kitchen_cook_surface | OnOff.OnOff = True
[2026-08-17T10:20:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T10:40:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-17T11:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-17T11:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-08-17T11:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-08-17T11:10:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:14:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-08-17T11:15:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:16:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-17T11:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-17T11:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2433
[2026-08-17T11:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-17T11:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-17T11:30:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:34:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2446
[2026-08-17T11:35:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:35:40] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-17T11:38:00] kitchen_cook_surface | OnOff.OnOff = False
[2026-08-17T11:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2430
[2026-08-17T11:41:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-17T11:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2528
[2026-08-17T11:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2436
[2026-08-17T11:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-08-17T11:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-17T11:55:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T11:59:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2433
[2026-08-17T12:00:00] kitchen_cook_surface | OnOff.OnOff = True
[2026-08-17T12:00:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:01:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-08-17T12:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-08-17T12:05:00] kitchen_cook_surface | OnOff.OnOff = False
[2026-08-17T12:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2516
[2026-08-17T12:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-08-17T12:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2422
[2026-08-17T12:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2524
[2026-08-17T12:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-08-17T12:20:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:24:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:25:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:26:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2514
[2026-08-17T12:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2520
[2026-08-17T12:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2409
[2026-08-17T12:35:40] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-17T12:39:00] living_room_light | OnOff.OnOff = False
[2026-08-17T12:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2511
[2026-08-17T12:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2507
[2026-08-17T12:40:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:44:03] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2402
[2026-08-17T12:45:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:46:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T12:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2513
[2026-08-17T12:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2508
[2026-08-17T12:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2398
[2026-08-17T13:00:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T13:20:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T13:40:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-17T16:55:30] kitchen_cook_surface | OnOff.OnOff = True
[2026-08-18T10:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-08-18T10:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-18T10:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-08-18T10:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-18T10:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-18T10:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-18T10:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-08-18T10:54:30] kitchen_cook_surface | OnOff.OnOff = True
[2026-08-18T10:59:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-18T11:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-08-18T11:14:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-18T11:14:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-18T11:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-08-18T11:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-18T11:19:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-18T11:19:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-18T11:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2443
[2026-08-18T11:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-18T11:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-08-18T11:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-18T11:33:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None
[2026-08-18T11:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-08-18T11:39:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-18T11:39:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-18T11:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-08-18T12:00:00] kitchen_cook_surface | OnOff.OnOff = True
[2026-08-18T12:04:00] 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_malfunction",
  "threat_description": "厨房温度传感器在烹饪活动期间出现数据丢失（None），且读数与客厅及卧室传感器相比存在异常漂移，可能导致火灾风险未被及时监测。",
  "reasoning": [
    "推理步骤 1: 分析日志发现，2026-08-17 和 2026-08-18 期间，住户多次在厨房开启灶具（kitchen_cook_surface OnOff=True）进行烹饪活动，此时厨房运动传感器显示有人（Occupancy=1）。",
    "推理步骤 2: 正常情况下，烹饪时厨房温度应显著高于其他房间。然而，日志显示厨房温度传感器（kitchen_temp_sensor）在 2026-08-18T11:33:00 突然报告值为 None（数据丢失），随后在 11:40:00 恢复为 2529，而同一时间段的客厅和卧室温度稳定在 25°C 左右（约 2540-2550 mK），这表明传感器可能发生了通信中断或硬件故障，而非环境突变。",
    "推理步骤 3: 考虑到独居老人这一高风险群体，以及烹饪是主要的火灾诱因，关键的安全传感器（温度/烟雾）失效属于严重安全隐患。虽然烟雾报警器未直接报错，但作为辅助监测的温度传感器失灵会导致系统无法准确判断过热情况，增加了误报或漏报的风险。"
  ],
  "key_evidence": [
    "2026-08-18T11:33:00 kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None (在烹饪活动中)",
    "2026-08-18T11:33:00 前后厨房与其他房间温度读数差异巨大且无合理物理过渡",
    "独居老人环境下，烹饪时段的关键安全传感器数据缺失"
  ],
  "recommended_actions": [
    "立即检查厨房温度传感器的电池、连接状态及固件版本，必要时更换设备。",
    "在修复前，建议人工增加对厨房区域的巡查频率，特别是在烹饪时段。",
    "验证烟雾报警器的功能是否正常，确保其能独立承担火灾探测任务。"
  ]
}
```


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: 112

## 跨天活动摘要
- 2026-07-09: living_room=208, bedroom=242, kitchen=240, entrance=231, bathroom=58
- 2026-07-10: living_room=209, bedroom=241, kitchen=239, entrance=231, bathroom=64
- 2026-07-11: living_room=209, bedroom=240, kitchen=240, entrance=231, bathroom=64

## 设备事件日志
[2026-07-09T05:58:07] kitchen_light | OnOff.OnOff = True
[2026-07-09T10:34:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T10:54:00] kitchen_light | OnOff.OnOff = True
[2026-07-09T11:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-09T11:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-09T11:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-07-09T11:19:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T11:24:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T11:29:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T11:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-07-09T11:33:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None
[2026-07-09T11:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2432
[2026-07-09T11:49:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T11:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-09T11:54:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T11:59:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T11:59:17] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-09T12:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-07-09T12:05:00] kitchen_light | OnOff.OnOff = True
[2026-07-09T12:09:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T12:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2436
[2026-07-09T12:14:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T12:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-07-09T12:19:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T12:24:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T12:29:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T12:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2521
[2026-07-09T12:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2510
[2026-07-09T12:49:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T12:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2416
[2026-07-09T12:54:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-09T12:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2516
[2026-07-09T13:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2501
[2026-07-09T13:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2500
[2026-07-09T13:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2479
[2026-07-09T13:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2474
[2026-07-10T12:40:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T13:00:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T13:20:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T13:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2392
[2026-07-10T13:31:08] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T13:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2498
[2026-07-10T13:37:31] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-10T13:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2487
[2026-07-10T13:44:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T13:45:02] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T13:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2489
[2026-07-10T13:50:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T13:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2382
[2026-07-10T13:56:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T14:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2476
[2026-07-10T14:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2473
[2026-07-10T14:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2357
[2026-07-10T14:16:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T14:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2458
[2026-07-10T14:20:00] kitchen_light | OnOff.OnOff = True
[2026-07-10T14:24:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T14:25:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T14:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2457
[2026-07-10T14:31:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T14:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2364
[2026-07-10T14:36:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T14:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2353
[2026-07-10T14:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2439
[2026-07-10T14:49:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T14:50:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T14:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2435
[2026-07-10T14:56:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T15:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2338
[2026-07-10T15:01:12] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-10T15:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2430
[2026-07-10T15:07:31] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-10T15:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2433
[2026-07-10T15:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2419
[2026-07-10T15:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2414
[2026-07-10T15:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2405
[2026-07-10T16:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2399
[2026-07-11T15:00:15] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T15:20:15] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T15:40:15] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T15:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2304
[2026-07-11T15:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2394
[2026-07-11T15:57:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:04:50] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-11T16:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2398
[2026-07-11T16:10:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2285
[2026-07-11T16:15:15] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2380
[2026-07-11T16:22:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:25:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2389
[2026-07-11T16:30:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2376
[2026-07-11T16:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2265
[2026-07-11T16:40:00] kitchen_light | OnOff.OnOff = True
[2026-07-11T16:40:15] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2368
[2026-07-11T16:47:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:50:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T16:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2368
[2026-07-11T16:55:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T17:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2258
[2026-07-11T17:00:15] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T17:03:30] kitchen_cook_surface | OnOff.OnOff = True
[2026-07-11T17:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2251
[2026-07-11T17:07:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T17:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2364
[2026-07-11T17:15:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-11T17:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2348
[2026-07-11T17:20:15] 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": "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": "厨房温度传感器在活跃时段出现数据丢失（None），且随后读数异常偏低，疑似设备故障或通信中断，存在安全隐患。",
  "reasoning": [
    "推理步骤 1: 分析日志发现，在 2026-07-09T11:33:00 至 2026-07-09T11:45:00 期间，厨房温度传感器报告了 'MeasuredValue = None'，表明设备在此期间未能上报有效数据。",
    "推理步骤 2: 结合上下文，该时间段内厨房运动传感器多次检测到有人活动（Occupancy=1），且厨房灯被开启，说明住户正在厨房进行正常活动，传感器未失效是合理的预期。",
    "推理步骤 3: 在数据恢复后（如 2026-07-09T11:50:00），虽然恢复了数值，但后续几天（特别是 2026-07-10 和 2026-07-11）的厨房温度读数相对于卧室和客厅显著偏低（例如 2026-07-11 厨房约 236°C vs 卧室 225°C，虽单位看似摄氏度*10，但趋势上厨房温度波动剧烈且有时低于环境温度逻辑），加上之前的断报，强烈暗示传感器硬件故障、电池耗尽或 Matter 链路不稳定，而非真实的环境变化。对于独居老人家庭，关键安全传感器的不可靠是高风险事件。"
  ],
  "key_evidence": [
    "[2026-07-09T11:33:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None",
    "在厨房有人活动和开灯的背景下，温度传感器连续多分钟无数据上报。"
  ],
  "recommended_actions": [
    "立即检查厨房温度传感器的电池状态及物理连接。",
    "尝试重置厨房温度传感器并重新加入 Matter 网络。",
    "在修复前，建议家属增加对厨房区域的实地巡查频率，以防因温度监测失效导致火灾风险未被及时发现。"
  ]
}
```