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: 三室两厅 (3BR)
- 重点房间 living_room: 客厅主灯[dimmable_light], 客厅副灯[dimmable_light], 客厅氛围灯[onoff_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1[window_covering], 客厅窗户传感器1[contact_sensor], ... 共10个设备
- 房间 balcony: 阳台灯[onoff_light], 阳台门传感器[contact_sensor], 洗衣机[laundry_washer]
- 房间 dining_room: 餐厅灯[dimmable_light], 餐厅运动传感器[occupancy_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 kids_room: 儿童房灯[dimmable_light], 儿童房运动传感器[occupancy_sensor], 儿童房窗帘[window_covering], 儿童房窗户传感器[contact_sensor], 儿童房温度传感器[temperature_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], 厨房窗户传感器[contact_sensor], 洗碗机[dishwasher], 厨房漏水传感器[water_leak_detector]
- 房间 master_bathroom: 主卫灯[onoff_light], 主卫运动传感器[occupancy_sensor], 主卫漏水传感器[water_leak_detector]
- 房间 master_bedroom: 主卧灯[dimmable_light], 主卧床头灯[onoff_light], 主卧空调[air_conditioner], 主卧运动传感器[occupancy_sensor], 主卧窗帘[window_covering], 主卧窗户传感器[contact_sensor], 主卧温度传感器[temperature_sensor]
- 房间 second_bathroom: 次卫灯[onoff_light], 次卫漏水传感器[water_leak_detector]
- 房间 second_bedroom: 次卧灯[dimmable_light], 次卧空调[air_conditioner], 次卧运动传感器[occupancy_sensor], 次卧窗帘[window_covering], 次卧窗户传感器[contact_sensor]

## 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: SQ1
- 重点房间: living_room
- 重点设备: living_room_ac
- 已选事件数: 124

## 设备事件日志
[2026-07-02T03:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2369
[2026-07-02T03:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2370
[2026-07-02T03:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2391
[2026-07-02T04:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T04:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2409
[2026-07-02T04:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2419
[2026-07-02T05:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2432
[2026-07-02T05:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2450
[2026-07-02T05:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2476
[2026-07-02T06:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2482
[2026-07-02T06:00:00] kids_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T06:05:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2470
[2026-07-02T06:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2477
[2026-07-02T06:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2487
[2026-07-02T06:25:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2478
[2026-07-02T06:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2495
[2026-07-02T06:30:00] dining_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T06:33:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T06:37:00] master_bathroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T06:38:34] kitchen_cook_surface | OnOff.OnOff = True
[2026-07-02T06:40:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2492
[2026-07-02T06:44:13] kids_room_window | WindowCovering.CurrentPositionLiftPercent100ths = 0
[2026-07-02T06:48:00] second_bathroom_light | OnOff.OnOff = True
[2026-07-02T06:50:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2511
[2026-07-02T06:55:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2509
[2026-07-02T07:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2514
[2026-07-02T07:00:00] dining_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T07:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2503
[2026-07-02T07:09:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T07:10:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2507
[2026-07-02T07:11:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None
[2026-07-02T07:15:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-07-02T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2504
[2026-07-02T07:23:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T07:24:17] kids_room_light | OnOff.OnOff = False
[2026-07-02T07:24:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T07:25:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2506
[2026-07-02T07:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T07:35:03] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2514
[2026-07-02T07:43:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T07:45:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-07-02T07:49:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T07:55:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-02T07:59:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T08:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-02T08:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2526
[2026-07-02T08:09:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T08:10:03] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T08:15:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-07-02T08:19:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-07-02T08:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-02T08:28:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T08:30:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-07-02T08:35:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-02T08:39:14] master_bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T08:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-07-02T08:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-07-02T08:48:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T08:50:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-07-02T08:54:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T08:55:03] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T09:00:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-07-02T09:00:00] living_room_ac | Event: DeviceOffline()
[2026-07-02T09:02:00] living_room_ac | Event: DeviceOnline()
[2026-07-02T09:05:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-07-02T09:08:00] living_room_ac | Event: DeviceOffline()
[2026-07-02T09:09:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T09:10:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-02T09:10:00] living_room_ac | Event: DeviceOnline()
[2026-07-02T09:14:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T09:15:03] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T09:18:00] living_room_ac | Event: DeviceOffline()
[2026-07-02T09:20:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-02T09:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-02T09:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-07-02T09:30:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T09:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-02T09:38:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T09:40:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-07-02T09:44:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T09:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-02T09:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-07-02T09:55:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-02T09:59:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T10:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T10:05:03] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T10:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2558
[2026-07-02T10:13:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T10:15:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-07-02T10:19:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T10:25:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-07-02T10:29:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T10:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-02T10:39:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T10:40:03] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T10:45:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-07-02T10:49:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T10:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-07-02T10:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-02T10:58:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T11:00:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-02T11:05:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-02T11:09:14] master_bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T11:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-07-02T11:18:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T11:20:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-07-02T11:24:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T11:25:03] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T11:30:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-07-02T11:35:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-02T11:39:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T11:40:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-02T11:44:30] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T11:45:03] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T11:50:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-02T11:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-02T12:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2528
[2026-07-02T12:00:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-02T12:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-02T12:08:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-02T12:10:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-07-02T12:14:00] kids_room_occupancy | OccupancySensing.Occupancy = 1

## 任务
请结合下面的 Matter 设备日志，判断是否存在设备健康问题，并说明可能的故障类型。

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。

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_malfunction",
  "threat_description": "客厅温度传感器读数异常偏高且波动剧烈，疑似硬件故障或安装位置不当导致测量失真。",
  "reasoning": [
    "1. 分析温度数值合理性：日志显示客厅温度传感器（living_room_temp_sensor）在03:00至10:58期间的读数分别为2369, 2370, 2391...直至2543等。根据Matter协议标准，TemperatureMeasurement.MeasuredValue的单位是厘氏度（centi-degrees Celsius），即需要除以100得到摄氏度。因此，2369代表23.69°C，2543代表25.43°C。这些数值本身处于合理的室内舒适温度范围（约23-25°C）。",
    "2. 检查数据一致性与逻辑：虽然数值在合理范围内，但需结合其他房间数据进行对比。例如，06:00时厨房温度为24.82°C，主卧为24.78°C，儿童房为24.70°C。随后客厅温度迅速上升至25.14°C (07:00)，并在上午持续波动（25.03 -> 25.14 -> 25.04 -> 25.14 -> 25.43 -> 25.57 -> 25.42 -> 25.45 -> 25.58 -> 25.43）。",
    "3. 识别关键异常点 - 设备离线/在线事件：在09:00至09:30之间，客厅空调（living_room_ac）出现了频繁的DeviceOffline()和DeviceOnline()事件（09:00离线, 09:02在线, 09:08离线, 09:10在线, 09:18离线）。这种高频的断连重连通常表明网络连接不稳定、电源问题或设备内部故障。",
    "4. 关联分析与误报排除：题目要求判断“设备健康问题”。虽然温度读数看似正常，但结合空调的高频掉线，以及温度传感器在短时间内的微小波动（如09:30的25.57 vs 09:35的25.42），如果这是由空调故障引起的局部热效应或传感器自身漂移，则属于设备健康范畴。然而，更明显的异常在于**空调本身的连接稳定性**。但在给定的威胁类型列表中，没有直接的'network_instability'。我们需要重新审视温度值。等等，如果单位不是厘氏度呢？如果是华氏度或其他？不，Matter标准强制使用厘氏度。25.43°C是非常正常的室温。",
    "5. 重新评估'Anomaly'定义：让我们看另一个角度。是否有传感器卡住（stuck）？从03:00到05:50，温度从23.69缓慢升至24.76，符合夜间自然升温或空调关闭后的趋势。06:00后有人活动，温度继续上升。但是，请注意07:11厨房温度传感器返回了`None`，这是一个通信丢失的证据。再看客厅空调，它在09:00-09:30期间反复离线。这直接指向**actuator_stuck** (如果空调卡在某个状态) 或 **safety_device_failure** (如果因过热保护断开)? 不，最贴切的是**sensor_malfunction**或者**actuator_stuck**相关的网络/控制问题。",
    "6. 修正推理路径：仔细观察温度值的变化率。03:00 (23.69) -> 03:20 (23.70) -> 03:40 (23.91)。变化很小。04:25 (24.09) -> 04:45 (24.19)。05:05 (24.32) -> 05:30 (24.50) -> 05:50 (24.76)。这是一条平滑的曲线。06:00 (24.82) -> 06:20 (24.87) -> 06:30 (24.95) -> 07:00 (25.14) -> 07:05 (25.03)。**注意07:05的下降**：从25.14降到25.03。紧接着07:20又降到25.04。然后07:40升到25.14。07:45儿童房25.33。07:55主卧25.35。08:00厨房25.35。08:25客厅25.43。08:45客厅25.45。09:00客厅25.57。09:30客厅25.42。**09:30的下降**：从25.57降至25.42。这在短时间内（30分钟）发生，且伴随空调频繁离线。",
    "7. 核心问题定位：客厅空调在09:00-09:30期间经历了三次离线/在线切换。这极可能导致了温控逻辑混乱或传感器读数受空调出风口直吹影响（如果传感器与空调距离近）。但更重要的是，**厨房温度传感器在07:11返回None**，表明存在通信丢包。客厅空调的频繁掉线也印证了该区域网络或设备稳定性差。在给定的选项中，**sensor_malfunction** 是最接近的，因为温度读数的波动（特别是07:05和09:30的非典型回落）可能与空调故障导致的局部气流变化或传感器本身受干扰有关。此外，如果空调无法保持连接，它可能无法正确调节温度，导致传感器读数不能反映真实环境舒适度，这是一种功能性故障。",
    "8. 最终判定：虽然温度数值物理上合理，但**客厅空调的高频离线**是明确的设备健康/连接问题。由于选项中没有'connectivity_issue'，且空调故障会直接影响其控制的区域（客厅）的环境监测准确性（如传感器读数受空调启停影响产生非自然波动），归类为 **sensor_malfunction** (广义的设备功能失效导致的数据不可信) 或 **actuator_stuck** (如果理解为空调执行器控制失效)。考虑到空调是执行器，且频繁断连可能导致其处于未知状态，**actuator_stuck** 是一个可能的解释（例如卡在制冷或制热循环中导致温度异常波动），但更准确的是设备本身的不稳定。在提供的有限选项中，**sensor_malfunction** 常被用于指代因设备故障导致的环境数据异常。然而，还有一个更强的候选项：**safety_device_failure**？不。让我们看 **behavioral_anomaly**？不。",
    "9. 再次审视：有没有可能是 **sensor_drift**？从23.69到25.58，1小时内升高近2度，对于有人的早晨来说略快，但并非不可能。关键在于空调的掉线。如果必须选一个，**sensor_malfunction** 是因为我们依赖传感器来判断环境，而空调的故障使得这个判断变得不可靠。或者，我们可以认为空调本身是 'actuator'，它的故障是 'actuator_stuck' (e.g., stuck in a reboot loop or control state)。鉴于Matter设备中，AC通常被视为执行器，且其状态不稳定，**actuator_stuck** 或 **sensor_malfunction** 均可。但通常 'stuck' 意味着状态不变。这里是状态跳变。让我们选择 **sensor_malfunction**，因为主要观察到的现象是环境参数（温度）在设备故障期间的异常表现，且厨房传感器也出现了Null值，暗示整体传感/通信链路的健康问题。"
  ],
  "key_evidence": [
    "客厅空调 (living_room_ac) 在 09:00-09:30 期间发生 3 次 DeviceOffline/DeviceOnline 切换，表明设备连接极不稳定。",
    "厨房温度传感器 (kitchen_temp_sensor) 在 07:11 返回 None，表明存在通信丢包或传感器故障。",
    "客厅温度读数在空调频繁断连期间出现非平滑波动（如 07:00-07:05 的下降和 09:00-09:30 的波动），可能与空调故障导致的局部气流或传感器干扰有关。"
  ],
  "recommended_actions": [
    "检查客厅空调的网络连接信号强度及电源供应，排查是否因Wi-Fi干扰或电压不稳导致频繁断连。",
    "重启客厅空调及周围的Matter边界器/网关，以恢复稳定的通信链路并校准传感器读数。",
    "若问题持续，考虑更换客厅空调或温度传感器，以排除硬件故障。"
  ]
}
```

{
  "is_anomaly": true,
  "confidence": "low",
  "threat_type": "intrusion",
  "threat_description": "存在异常，但原因更可能属于其他类别。",
  "reasoning": [
    "推理步骤1: 日志里有异常，但我把它归因为另一类威胁。"
  ],
  "key_evidence": [
    "同一设备频繁离线/上线"
  ],
  "recommended_actions": [
    "建议按该错误类别处理。"
  ]
}


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: 三室两厅 (3BR)
- 重点房间 living_room: 客厅主灯[dimmable_light], 客厅副灯[dimmable_light], 客厅氛围灯[onoff_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1[window_covering], 客厅窗户传感器1[contact_sensor], ... 共10个设备
- 房间 balcony: 阳台灯[onoff_light], 阳台门传感器[contact_sensor], 洗衣机[laundry_washer]
- 房间 dining_room: 餐厅灯[dimmable_light], 餐厅运动传感器[occupancy_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 kids_room: 儿童房灯[dimmable_light], 儿童房运动传感器[occupancy_sensor], 儿童房窗帘[window_covering], 儿童房窗户传感器[contact_sensor], 儿童房温度传感器[temperature_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], 厨房窗户传感器[contact_sensor], 洗碗机[dishwasher], 厨房漏水传感器[water_leak_detector]
- 房间 master_bathroom: 主卫灯[onoff_light], 主卫运动传感器[occupancy_sensor], 主卫漏水传感器[water_leak_detector]
- 房间 master_bedroom: 主卧灯[dimmable_light], 主卧床头灯[onoff_light], 主卧空调[air_conditioner], 主卧运动传感器[occupancy_sensor], 主卧窗帘[window_covering], 主卧窗户传感器[contact_sensor], 主卧温度传感器[temperature_sensor]
- 房间 second_bathroom: 次卫灯[onoff_light], 次卫漏水传感器[water_leak_detector]
- 房间 second_bedroom: 次卧灯[dimmable_light], 次卧空调[air_conditioner], 次卧运动传感器[occupancy_sensor], 次卧窗帘[window_covering], 次卧窗户传感器[contact_sensor]

## 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: SQ1
- 重点房间: living_room
- 重点设备: living_room_ac
- 已选事件数: 128

## 设备事件日志
[2026-08-27T03:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2357
[2026-08-27T03:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2381
[2026-08-27T03:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2377
[2026-08-27T04:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T04:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2410
[2026-08-27T04:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2428
[2026-08-27T05:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2436
[2026-08-27T05:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2451
[2026-08-27T05:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2474
[2026-08-27T06:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2465
[2026-08-27T06:00:00] kids_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T06:05:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2480
[2026-08-27T06:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2483
[2026-08-27T06:15:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2487
[2026-08-27T06:20:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2490
[2026-08-27T06:25:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2479
[2026-08-27T06:27:00] master_bathroom_light | OnOff.OnOff = True
[2026-08-27T06:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T06:31:00] second_bathroom_light | OnOff.OnOff = True
[2026-08-27T06:37:00] master_bathroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T06:40:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T06:45:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2499
[2026-08-27T06:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2491
[2026-08-27T06:51:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T06:53:30] kitchen_window_contact | BooleanState.StateValue = False
[2026-08-27T06:54:55] master_bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T07:00:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2507
[2026-08-27T07:00:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T07:05:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2514
[2026-08-27T07:08:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T07:10:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T07:15:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-08-27T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2514
[2026-08-27T07:21:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T07:25:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2515
[2026-08-27T07:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2512
[2026-08-27T07:30:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T07:32:08] kitchen_light | OnOff.OnOff = False
[2026-08-27T07:32:37] front_door_contact | BooleanState.StateValue = False
[2026-08-27T07:33:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T07:40:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-08-27T07:42:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T07:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-08-27T07:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-08-27T07:51:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T07:55:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2518
[2026-08-27T08:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2522
[2026-08-27T08:02:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T08:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2526
[2026-08-27T08:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2528
[2026-08-27T08:11:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T08:15:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-08-27T08:18:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T08:20:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T08:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-08-27T08:30:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-08-27T08:31:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T08:35:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-27T08:38:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T08:40:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T08:45:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-27T08:47:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T08:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-27T08:54:55] master_bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T09:00:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-08-27T09:00:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T09:00:00] living_room_ac | Event: DeviceOffline()
[2026-08-27T09:02:00] living_room_ac | Event: DeviceOnline()
[2026-08-27T09:05:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-27T09:07:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T09:08:00] living_room_ac | Event: DeviceOffline()
[2026-08-27T09:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-27T09:10:00] living_room_ac | Event: DeviceOnline()
[2026-08-27T09:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-27T09:16:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T09:18:00] living_room_ac | Event: DeviceOffline()
[2026-08-27T09:20:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-27T09:23:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T09:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-08-27T09:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-08-27T09:30:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T09:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-08-27T09:36:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T09:40:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-27T09:43:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T09:50:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-27T09:52:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T09:55:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-08-27T10:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T10:03:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T10:05:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T10:10:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-27T10:12:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T10:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-27T10:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-08-27T10:21:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T10:25:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-27T10:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-27T10:32:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T10:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-27T10:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-27T10:41:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T10:45:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-08-27T10:48:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T10:50:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T10:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-08-27T11:01:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T11:05:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-27T11:08:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T11:10:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T11:15:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-08-27T11:17:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T11:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-27T11:24:55] master_bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T11:30:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-27T11:30:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-27T11:35:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-08-27T11:37:38] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T11:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-27T11:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-27T11:46:00] kids_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T11:50:00] kids_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-27T11:53:05] dining_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T11:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2527
[2026-08-27T12:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-08-27T12:00:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-27T12:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2520
[2026-08-27T12:06:00] kids_room_occupancy | OccupancySensing.Occupancy = 1

## 任务
请结合下面的 Matter 设备日志，判断是否存在设备健康问题，并说明可能的故障类型。

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。

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_malfunction",
  "threat_description": "客厅温度传感器读数异常（显示为23.57°C至25.57°C之间的整数倍或特定序列，但初始值2357极可能是单位错误或硬件故障），且客厅空调频繁离线/在线，导致环境监控失效。",
  "reasoning": [
    "1. 分析温度数据：日志中 `living_room_temp_sensor` 在凌晨03:00-06:00期间报告的数值为 2357, 2381, 2377 等。Matter协议中 `TemperatureMeasurement.MeasuredValue` 通常以厘度（centi-degrees Celsius）为单位，即除以100得到摄氏度。如果直接读取整数值2357，代表23.57°C，这在物理上是合理的室温。然而，结合后续数据（如04:25的2410 -> 24.10°C），这些数值变化趋势符合夏季清晨气温缓慢上升的自然规律。但是，需要警惕的是，如果该传感器固件存在Bug，将毫度（milli-degrees）误报为厘度，或者反之，会导致控制逻辑错误。更关键的是，观察其他房间温度：厨房06:00为2465 (24.65°C)，主卧06:15为2487 (24.87°C)。所有房间温度在早晨6点左右集中在24-25°C之间，这是合理的。因此，单纯从数值看，2357可能只是23.57°C的正常记录。",
    "2. 分析空调状态：重点设备 `living_room_ac` 在 09:00 - 09:40 期间出现了频繁的 `DeviceOffline()` 和 `DeviceOnline()` 事件。具体时间为：09:00离线，09:02上线，09:08离线，09:10上线，09:18离线。这种短时间的反复断连（Flapping）通常表明网络连接不稳定、电源模块故障或设备内部软件崩溃，属于典型的设备健康异常。",
    "3. 综合判断：虽然温度数值本身可能在合理范围内（假设单位为厘度），但空调设备的频繁离线是明确的硬件或连接故障迹象。此外，如果温度传感器的单位配置错误（例如实际是23.57°C却上报2357而系统未做转换，或者反之），会导致自动化策略（如温控联动）失效。鉴于任务聚焦于 `living_room_ac` 及其关联的环境监测，空调的不稳定连接构成了主要的安全/可用性威胁。同时，若温度传感器读数未经过正确的缩放处理（例如直接作为整数存储而非浮点转换），也属于传感器配置或驱动层面的 malfunction。考虑到2357这个数值如果是23.57度，则正常；但如果系统期望的是整数度数或其他格式，则异常。最确凿的证据是空调的频繁掉线。",
    "4. 排除其他威胁：没有入侵迹象（门锁无异常开启，运动传感器仅在有人时触发），没有火灾或漏水警报，没有一氧化碳风险。"
  ],
  "key_evidence": [
    "[2026-08-27T09:00:00] living_room_ac | Event: DeviceOffline()",
    "[2026-08-27T09:02:00] living_room_ac | Event: DeviceOnline()",
    "[2026-08-27T09:08:00] living_room_ac | Event: DeviceOffline()",
    "[2026-08-27T09:10:00] living_room_ac | Event: DeviceOnline()",
    "[2026-08-27T09:18:00] living_room_ac | Event: DeviceOffline()"
  ],
  "recommended_actions": [
    "检查客厅空调的网络连接稳定性，重启路由器或空调设备以解决频繁断连问题。",
    "验证客厅温度传感器的数据格式和单位配置，确保上报值与系统预期一致（如确认是否为厘度单位）。",
    "如果空调频繁离线持续发生，考虑更换空调智能模块或联系厂家进行固件升级。"
  ]
}
```

{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_malfunction",
  "threat_description": "设备频繁离线重连",
  "reasoning": [
    "推理步骤1: 日志中出现了不存在的额外报警事件。"
  ],
  "key_evidence": [
    "我假设看到了一个未在日志中出现的 critical 告警。"
  ],
  "recommended_actions": [
    "判断为通信层不稳定，建议检查设备网络连接。"
  ]
}


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: 一室一厅 (Studio/1BR)
- 重点房间 living_room: 客厅主灯[dimmable_light], 客厅台灯[onoff_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]
- 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], 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]
- 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], 厨房窗户传感器[contact_sensor], 洗碗机[dishwasher]

## 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: SQ1
- 重点房间: living_room
- 重点设备: living_room_ac
- 已选事件数: 131

## 设备事件日志
[2026-08-06T03:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2369
[2026-08-06T03:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2359
[2026-08-06T03:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2375
[2026-08-06T03:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T03:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2381
[2026-08-06T03:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2400
[2026-08-06T04:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2393
[2026-08-06T04:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2395
[2026-08-06T04:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2408
[2026-08-06T04:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2410
[2026-08-06T04:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T04:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2416
[2026-08-06T04:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2427
[2026-08-06T05:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2433
[2026-08-06T05:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2437
[2026-08-06T05:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2457
[2026-08-06T05:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2463
[2026-08-06T05:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T05:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2472
[2026-08-06T05:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2464
[2026-08-06T06:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2484
[2026-08-06T06:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2480
[2026-08-06T06:00:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T06:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2479
[2026-08-06T06:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2468
[2026-08-06T06:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2371
[2026-08-06T06:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2478
[2026-08-06T06:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2488
[2026-08-06T06:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2393
[2026-08-06T06:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2485
[2026-08-06T06:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2493
[2026-08-06T06:29:04] bedroom_light | OnOff.OnOff = True
[2026-08-06T06:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2492
[2026-08-06T06:30:00] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T06:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2497
[2026-08-06T06:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2498
[2026-08-06T06:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2491
[2026-08-06T06:41:02] bathroom_light | OnOff.OnOff = True
[2026-08-06T06:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2491
[2026-08-06T06:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2494
[2026-08-06T06:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2508
[2026-08-06T06:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2495
[2026-08-06T06:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2505
[2026-08-06T06:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2510
[2026-08-06T07:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2500
[2026-08-06T07:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2509
[2026-08-06T07:01:02] bathroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-06T07:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2415
[2026-08-06T07:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2412
[2026-08-06T07:14:00] bathroom_light | OnOff.OnOff = False
[2026-08-06T07:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2510
[2026-08-06T07:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2516
[2026-08-06T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-08-06T07:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2419
[2026-08-06T07:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-08-06T07:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-08-06T07:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-08-06T07:36:02] bedroom_light | OnOff.OnOff = False
[2026-08-06T07:36:15] front_door_lock | DoorLock.LockState = 2
[2026-08-06T07:36:25] front_door_contact | BooleanState.StateValue = True
[2026-08-06T07:36:26] front_door_lock | DoorLock.LockState = 1
[2026-08-06T07:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2427
[2026-08-06T07:42:35] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T07:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-08-06T07:45:21] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T07:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2428
[2026-08-06T07:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-08-06T07:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2518
[2026-08-06T08:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2439
[2026-08-06T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T08:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2437
[2026-08-06T08:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-08-06T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2524
[2026-08-06T08:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-08-06T08:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-08-06T08:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-06T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-06T08:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2443
[2026-08-06T08:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-06T08:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-08-06T08:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-06T08:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-08-06T08:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2448
[2026-08-06T08:42:35] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T08:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-08-06T08:45:21] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T08:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-08-06T08:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-06T08:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-06T09:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T09:00:00] living_room_ac | Event: DeviceOffline()
[2026-08-06T09:02:00] living_room_ac | Event: DeviceOnline()
[2026-08-06T09:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2437
[2026-08-06T09:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-08-06T09:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-08-06T09:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-08-06T09:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-08-06T09:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-08-06T09:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-08-06T09:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-08-06T09:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-06T09:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-06T09:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-06T09:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-08-06T09:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2448
[2026-08-06T09:42:35] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T09:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2450
[2026-08-06T09:45:21] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T09:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-06T09:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-06T10:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2449
[2026-08-06T10:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T10:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2458
[2026-08-06T10:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-08-06T10:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-06T10:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-06T10:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-08-06T10:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-08-06T10:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-08-06T10:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2450
[2026-08-06T10:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-08-06T10:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-08-06T10:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2558
[2026-08-06T10:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-06T10:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2452
[2026-08-06T10:42:35] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T10:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2451
[2026-08-06T10:45:21] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-06T10:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2453
[2026-08-06T10:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-06T10:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548

## 任务
请结合下面的 Matter 设备日志，判断是否存在设备健康问题，并说明可能的故障类型。

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": false,
  "confidence": "medium",
  "threat_type": "none",
  "threat_description": "当前日志更符合正常模式，不建议报警。",
  "reasoning": [
    "推理步骤1: 正常样本是一次性短暂重连；异常样本在短时间内反复抖动。"
  ],
  "key_evidence": [
    "正常样本是一次性短暂重连；异常样本在短时间内反复抖动。"
  ],
  "recommended_actions": [
    "继续监测，无需立即处置。"
  ]
}

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_malfunction",
  "threat_description": "客厅温度传感器读数异常偏高且持续上升，远超正常室温范围，疑似传感器故障或校准错误。",
  "reasoning": [
    "数据单位分析：日志中的温度值（如 2369, 2558）明显超出了物理可能的摄氏度数值（通常室内在 -10 到 50 之间），结合 Matter 协议常见实现，这些数值极有可能是以 0.1°C 为单位的原始整数（即实际温度为 23.69°C 至 25.58°C）。",
    "趋势异常：尽管将数值还原后看似在合理范围内波动，但观察原始日志序列，从 03:00 的 23.69°C 到 10:55 的 25.58°C，温度呈现近乎线性的持续上升趋势（约 0.2-0.3°C/小时），这与清晨自然升温规律不符，且后期升温速率过快，导致空调频繁启停或失效。",
    "设备行为佐证：日志显示 `living_room_ac` 在 09:00 出现 `DeviceOffline()` 并在 09:02 恢复，随后温度读数继续攀升至 25.5°C+。如果空调正常工作，应能维持恒温；而温度持续失控上升表明温控回路可能因传感器反馈错误（认为房间一直很冷）而无法正确调节，或者传感器本身已损坏漂移。",
    "排除其他因素：虽然存在入户门锁操作和人员活动记录，但这些属于正常生活场景，无法解释为何整个上午客厅温度会异常且持续升高，排除了入侵或火灾风险（烟雾报警器未触发）。"
  ],
  "key_evidence": [
    "living_room_temp_sensor 读数从 2369 (23.69°C) 线性增长至 2558 (25.58°C)，且伴随空调离线重启事件后温度仍未回落。",
    "温度变化速率异常：在无人干预的情况下，短时间内温度上升幅度超过了普通环境热惯性所能达到的极限，符合传感器漂移或故障特征。"
  ],
  "recommended_actions": [
    "立即检查并重新校准客厅温度传感器，或将其暂时移除以确认是否为单一设备故障。",
    "手动设置空调目标温度，防止因传感器误报导致空调过度制冷或停机，避免能源浪费或设备过热。",
    "联系设备供应商进行固件更新或硬件更换，因为该传感器表现出典型的‘漂移’或‘死锁’症状。"
  ]
}
```


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: 两室一厅 (2BR)
- 重点房间 living_room: 客厅主灯[dimmable_light], 客厅落地灯[onoff_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]
- 房间 balcony: 阳台灯[onoff_light], 阳台门传感器[contact_sensor], 洗衣机[laundry_washer]
- 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 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], 厨房窗户传感器[contact_sensor], 洗碗机[dishwasher]
- 房间 master_bedroom: 主卧灯[dimmable_light], 主卧空调[air_conditioner], 主卧运动传感器[occupancy_sensor], 主卧窗帘[window_covering], 主卧窗户传感器[contact_sensor], 主卧温度传感器[temperature_sensor]
- 房间 second_bedroom: 次卧灯[dimmable_light], 次卧运动传感器[occupancy_sensor], 次卧窗帘[window_covering], 次卧窗户传感器[contact_sensor], 次卧温度传感器[temperature_sensor]

## 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: SQ1
- 重点房间: living_room
- 重点设备: living_room_ac
- 已选事件数: 127

## 设备事件日志
[2026-07-16T03:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2361
[2026-07-16T03:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2373
[2026-07-16T03:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2374
[2026-07-16T03:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2381
[2026-07-16T03:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2399
[2026-07-16T04:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T04:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2409
[2026-07-16T04:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2412
[2026-07-16T04:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2422
[2026-07-16T04:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2443
[2026-07-16T05:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-07-16T05:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2449
[2026-07-16T05:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T05:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2461
[2026-07-16T06:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2478
[2026-07-16T06:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2484
[2026-07-16T06:00:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T06:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2477
[2026-07-16T06:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2471
[2026-07-16T06:10:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2480
[2026-07-16T06:15:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2493
[2026-07-16T06:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2487
[2026-07-16T06:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2492
[2026-07-16T06:25:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2496
[2026-07-16T06:27:02] bathroom_light | OnOff.OnOff = True
[2026-07-16T06:30:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T06:32:02] bathroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T06:35:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2488
[2026-07-16T06:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2504
[2026-07-16T06:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2487
[2026-07-16T06:45:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2488
[2026-07-16T06:50:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2507
[2026-07-16T06:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2494
[2026-07-16T06:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2502
[2026-07-16T06:56:51] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T07:00:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2514
[2026-07-16T07:00:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T07:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2500
[2026-07-16T07:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2515
[2026-07-16T07:10:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2505
[2026-07-16T07:15:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2511
[2026-07-16T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2522
[2026-07-16T07:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2516
[2026-07-16T07:25:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2506
[2026-07-16T07:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2527
[2026-07-16T07:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-07-16T07:30:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T07:31:12] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T07:31:21] front_door_contact | BooleanState.StateValue = False
[2026-07-16T07:31:27] front_door_lock | Event: LockOperation(LockOperationType=0, OperationSource=Manual)
[2026-07-16T07:35:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2518
[2026-07-16T07:40:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2522
[2026-07-16T07:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-07-16T07:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2526
[2026-07-16T07:50:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-16T07:51:22] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T07:55:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-07-16T07:56:51] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T08:00:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-07-16T08:00:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T08:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-16T08:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-07-16T08:10:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-07-16T08:11:22] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T08:15:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-16T08:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-07-16T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-16T08:25:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-07-16T08:30:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-07-16T08:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T08:31:22] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T08:35:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-07-16T08:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-16T08:45:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-07-16T08:50:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-07-16T08:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-16T08:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-16T09:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-16T09:00:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T09:00:00] living_room_ac | Event: DeviceOffline()
[2026-07-16T09:02:00] living_room_ac | Event: DeviceOnline()
[2026-07-16T09:05:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-07-16T09:06:22] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:10:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-07-16T09:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-16T09:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-07-16T09:20:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-07-16T09:25:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-07-16T09:26:51] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T09:30:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-16T09:30:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T09:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-16T09:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-07-16T09:40:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-07-16T09:41:22] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T09:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-07-16T09:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-16T09:55:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-07-16T10:00:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-07-16T10:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T10:01:22] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T10:05:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2559
[2026-07-16T10:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-16T10:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2554
[2026-07-16T10:15:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-07-16T10:20:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2557
[2026-07-16T10:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-07-16T10:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-07-16T10:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-07-16T10:30:00] second_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T10:35:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-16T10:36:22] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T10:40:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-07-16T10:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-07-16T10:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-07-16T10:50:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-07-16T10:55:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-07-16T10:56:51] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T11:00:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-07-16T11:00:00] master_bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-16T11:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-16T11:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-16T11:10:00] master_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-07-16T11:11:22] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-07-16T11:15:00] second_bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-07-16T11:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-16T11:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542

## 任务
根据以下传感器与设备记录，评估目标设备当前工作状态是否正常。如异常，请给出故障判断依据。

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": false,
  "confidence": "medium",
  "threat_type": "none",
  "threat_description": "当前日志更符合正常模式，不建议报警。",
  "reasoning": [
    "推理步骤1: 正常样本是一次性短暂重连；异常样本在短时间内反复抖动。"
  ],
  "key_evidence": [
    "正常样本是一次性短暂重连；异常样本在短时间内反复抖动。"
  ],
  "recommended_actions": [
    "继续监测，无需立即处置。"
  ]
}

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_malfunction",
  "threat_description": "客厅温度传感器读数严重偏离物理现实，显示异常高温（23.6°C-25.4°C），且与空调离线事件存在强相关性，疑似传感器故障或被恶意篡改。",
  "reasoning": [
    "推理步骤 1: 日志显示从凌晨 03:00 到上午 11:20，客厅温度传感器 (living_room_temp_sensor) 的读数持续在 2361mK (23.61°C) 至 2543mK (25.43°C) 之间波动。虽然夏季室温可能较高，但结合后续数据看，该数值缺乏合理的昼夜温差变化逻辑，且数值过于平滑地维持在高位。",
    "推理步骤 2: 关键异常点出现在 09:00:00，此时目标设备 living_room_ac 报告 'DeviceOffline()'，随后在 09:02:00 恢复在线。在空调离线的这段时间及之后，尽管室内人员活动频繁（玄关多次检测到 occupancy=1），温度读数并未出现预期的因制冷停止而导致的快速上升，反而在空调重启后读数有所回落或维持在一个相对‘稳定’的高位区间，这不符合热力学规律。",
    "推理步骤 3: 对比其他房间（如厨房、主卧）的温度读数，它们也处于类似的高位区间（24.8°C-25.5°C），但这可能是由于所有传感器同时被攻击或系统时间/校准错误导致的全局漂移。然而，考虑到这是针对特定任务筛选的日志，且重点在于 living_room_ac 的状态，最直接的威胁是客厅温度传感器本身发生了硬件故障（Sensor Malfunction）或固件被入侵导致数据上报错误，误导了温控系统。",
    "推理步骤 4: 如果温度真实达到 25°C+ 且空调失效，通常会导致室内迅速升温至 30°C 以上，但日志中温度读数始终被‘压制’在 25°C 左右，这种反常的稳定性进一步证实了传感器数据不可信，属于典型的 Sensor Malfunction 或 Sensor Drift 中的极端漂移。"
  ],
  "key_evidence": [
    "living_room_temp_sensor 读数长期维持在 23.6°C - 25.4°C 的狭窄区间，未随空调离线 (09:00) 和人员活动产生符合物理规律的剧烈变化。",
    "在 09:00 空调离线期间，温度读数未发生预期的大幅飙升，暗示数据采集源已失效或被干扰。",
    "多房间传感器同时报出接近 25°C 的高温，但在无明确外部热源（如烤箱开启记录）的情况下，这种全局性的高温读数极大概率是传感器校准错误或数据注入攻击。"
  ],
  "recommended_actions": [
    "立即检查客厅温度传感器的硬件连接及供电状态，排除接触不良导致的误报。",
    "使用独立的手持式温度计测量客厅实际环境温度，验证传感器读数是否准确。",
    "若确认为传感器故障，更换新传感器；若怀疑网络攻击，隔离该设备并重置 Matter 凭证，检查是否有未经授权的写入操作。",
    "暂时手动关闭客厅空调，避免基于错误温度数据的无效运行或潜在的安全策略冲突。"
  ]
}
```


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: SQ1
- 重点房间: living_room
- 重点设备: living_room_ac
- 已选事件数: 123

## 设备事件日志
[2026-08-22T03:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2365
[2026-08-22T03:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2366
[2026-08-22T03:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-22T03:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2401
[2026-08-22T04:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2403
[2026-08-22T04:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2407
[2026-08-22T04:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2418
[2026-08-22T05:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2447
[2026-08-22T05:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2453
[2026-08-22T05:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-22T05:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2471
[2026-08-22T06:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2479
[2026-08-22T06:02:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T06:04:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T06:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2473
[2026-08-22T06:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2475
[2026-08-22T06:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2380
[2026-08-22T06:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2486
[2026-08-22T06:29:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T06:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-08-22T06:35:00] kitchen_cook_surface | OnOff.OnOff = False
[2026-08-22T06:35:37] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-22T06:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2488
[2026-08-22T06:47:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T06:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2493
[2026-08-22T06:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2393
[2026-08-22T06:56:02] front_door_lock | DoorLock.LockState = 2
[2026-08-22T06:56:12] front_door_lock | Event: LockOperation(LockOperationType=0, OperationSource=Manual)
[2026-08-22T07:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2510
[2026-08-22T07:01:05] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T07:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2398
[2026-08-22T07:07:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T07:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2517
[2026-08-22T07:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2507
[2026-08-22T07:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2523
[2026-08-22T07:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2515
[2026-08-22T07:27:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T07:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2512
[2026-08-22T07:34:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T07:35:37] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-22T07:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2512
[2026-08-22T07:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2527
[2026-08-22T07:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2521
[2026-08-22T07:52:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T07:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2528
[2026-08-22T08:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2532
[2026-08-22T08:01:05] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T08:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-08-22T08:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2524
[2026-08-22T08:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2544
[2026-08-22T08:17:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T08:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-08-22T08:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-08-22T08:27:00] front_door_lock | Event: LockOperation(LockOperationType=1, OperationSource=Manual)
[2026-08-22T08:27:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T08:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-08-22T08:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2441
[2026-08-22T08:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2446
[2026-08-22T08:42:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T08:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2536
[2026-08-22T08:49:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T08:52:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T08:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-08-22T08:57:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2436
[2026-08-22T09:00:00] living_room_ac | Event: DeviceOffline()
[2026-08-22T09:02:00] living_room_ac | Event: DeviceOnline()
[2026-08-22T09:02:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-08-22T09:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-08-22T09:14:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:17:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2548
[2026-08-22T09:22:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2455
[2026-08-22T09:27:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2558
[2026-08-22T09:34:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:35:37] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-08-22T09:42:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-08-22T09:47:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:52:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T09:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-08-22T09:59:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:02:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-08-22T10:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-08-22T10:12:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2442
[2026-08-22T10:17:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:20:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-08-22T10:24:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:27:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2558
[2026-08-22T10:32:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2452
[2026-08-22T10:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2451
[2026-08-22T10:42:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-08-22T10:49:05] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:52:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T10:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-08-22T10:57:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T11:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2435
[2026-08-22T11:02:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T11:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-08-22T11:09:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None
[2026-08-22T11:12:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T11:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-08-22T11:17:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T11:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2449
[2026-08-22T11:22:08] living_room_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T11:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-08-22T11:28:00] kitchen_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T11:32:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T11:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-08-22T11:40:00] kitchen_cook_surface | OnOff.OnOff = False
[2026-08-22T11:41:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None
[2026-08-22T11:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2535
[2026-08-22T11:52:03] entrance_occupancy | OccupancySensing.Occupancy = 1
[2026-08-22T11:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2432
[2026-08-22T11:57:08] living_room_occupancy | OccupancySensing.Occupancy = 1

## 任务
请结合下面的 Matter 设备日志，判断是否存在设备健康问题，并说明可能的故障类型。

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": false,
  "confidence": "medium",
  "threat_type": "none",
  "threat_description": "当前日志更符合正常模式，不建议报警。",
  "reasoning": [
    "推理步骤1: 正常样本是一次性短暂重连；异常样本在短时间内反复抖动。"
  ],
  "key_evidence": [
    "正常样本是一次性短暂重连；异常样本在短时间内反复抖动。"
  ],
  "recommended_actions": [
    "继续监测，无需立即处置。"
  ]
}

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_malfunction",
  "threat_description": "客厅温度传感器出现严重数据漂移和归零故障，导致无法准确监测室内环境，存在安全隐患。",
  "reasoning": [
    "推理步骤 1: 分析时间序列数据发现，从 03:00 到 08:25，客厅温度传感器读数持续异常升高（从 23.65°C 升至 25.45°C），且数值增长速率远超正常物理升温规律（例如 04:40 至 05:00 仅 15 分钟内上升近 30 度），这表明传感器读数已不可信，存在严重的传感器漂移或校准失效。",
    "推理步骤 2: 在 11:09 和 11:41，厨房温度传感器连续两次报告 `None` 值，随后在 11:50 恢复但数值波动剧烈，显示该传感器也存在间歇性故障或通信中断问题。",
    "推理步骤 3: 考虑到住户为独居老人，且日志中记录了空调设备在 09:00 短暂离线后重启，若此时依赖的温控传感器本身已损坏或数据错误，可能导致空调系统误判室温而停止制冷/制热，进而引发室内过热风险，对老人健康构成威胁。"
  ],
  "key_evidence": [
    "living_room_temp_sensor 在 04:40-05:00 期间温度读数激增约 27 度，不符合物理规律。",
    "kitchen_temp_sensor 在 11:09 和 11:41 连续报告 None 值，表明传感器功能不稳定。",
    "独居老人居住环境缺乏人工实时干预，传感器故障将直接导致环境监控盲区。"
  ],
  "recommended_actions": [
    "立即安排技术人员上门检查并更换客厅及厨房的温度传感器。",
    "在维修完成前，建议老人暂时避免长时间待在客厅，或手动开启窗户通风以防过热。",
    "检查智能家居网关与传感器的连接稳定性，排除因网络干扰导致的 `None` 值上报。"
  ]
}
```


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: 一室一厅 (Studio/1BR)
- 重点房间 living_room: 客厅主灯[dimmable_light], 客厅台灯[onoff_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]
- 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], 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]
- 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], 厨房窗户传感器[contact_sensor], 洗碗机[dishwasher]

## 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: SQ1
- 重点房间: living_room
- 重点设备: living_room_ac
- 已选事件数: 123

## 设备事件日志
[2026-07-13T03:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2354
[2026-07-13T03:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2378
[2026-07-13T03:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2371
[2026-07-13T03:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2388
[2026-07-13T03:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2392
[2026-07-13T04:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T04:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2404
[2026-07-13T04:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2422
[2026-07-13T04:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2432
[2026-07-13T05:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2436
[2026-07-13T05:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2461
[2026-07-13T05:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T05:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2468
[2026-07-13T06:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T06:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2475
[2026-07-13T06:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2479
[2026-07-13T06:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2473
[2026-07-13T06:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2486
[2026-07-13T06:28:08] bathroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T06:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2393
[2026-07-13T06:30:00] bedroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T06:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2497
[2026-07-13T06:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2486
[2026-07-13T06:42:10] bedroom_window | WindowCovering.CurrentPositionLiftPercent100ths = 0
[2026-07-13T06:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2408
[2026-07-13T06:47:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T06:48:28] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T06:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2500
[2026-07-13T06:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2409
[2026-07-13T07:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2506
[2026-07-13T07:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T07:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2418
[2026-07-13T07:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2512
[2026-07-13T07:12:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T07:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2502
[2026-07-13T07:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2519
[2026-07-13T07:21:00] kitchen_light | OnOff.OnOff = False
[2026-07-13T07:21:20] front_door_lock | DoorLock.LockState = 2
[2026-07-13T07:21:24] front_door_lock | Event: LockOperation(LockOperationType=0, OperationSource=Manual)
[2026-07-13T07:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2525
[2026-07-13T07:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2524
[2026-07-13T07:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2526
[2026-07-13T07:37:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T07:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2512
[2026-07-13T07:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2418
[2026-07-13T07:48:28] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T07:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2533
[2026-07-13T07:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2437
[2026-07-13T08:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T08:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2428
[2026-07-13T08:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-13T08:12:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T08:15:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2531
[2026-07-13T08:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-13T08:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2542
[2026-07-13T08:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2443
[2026-07-13T08:32:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T08:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-13T08:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-07-13T08:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2549
[2026-07-13T08:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2436
[2026-07-13T08:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2534
[2026-07-13T08:57:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T09:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-07-13T09:00:00] living_room_ac | Event: DeviceOffline()
[2026-07-13T09:02:00] living_room_ac | Event: DeviceOnline()
[2026-07-13T09:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2541
[2026-07-13T09:10:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-13T09:15:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2438
[2026-07-13T09:18:28] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T09:25:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2442
[2026-07-13T09:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2551
[2026-07-13T09:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T09:35:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2447
[2026-07-13T09:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-13T09:42:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T09:45:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2555
[2026-07-13T09:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2553
[2026-07-13T09:55:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2545
[2026-07-13T10:00:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2440
[2026-07-13T10:02:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T10:05:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2539
[2026-07-13T10:10:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2457
[2026-07-13T10:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2556
[2026-07-13T10:20:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2449
[2026-07-13T10:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2547
[2026-07-13T10:27:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T10:30:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-07-13T10:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2552
[2026-07-13T10:40:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-07-13T10:45:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2437
[2026-07-13T10:48:28] bathroom_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T10:50:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2543
[2026-07-13T10:55:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2453
[2026-07-13T11:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2537
[2026-07-13T11:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T11:05:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2445
[2026-07-13T11:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2550
[2026-07-13T11:12:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T11:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-13T11:25:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2540
[2026-07-13T11:30:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2440
[2026-07-13T11:32:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T11:35:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2546
[2026-07-13T11:40:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2434
[2026-07-13T11:50:00] bedroom_temp_sensor | TemperatureMeasurement.MeasuredValue = 2426
[2026-07-13T11:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2529
[2026-07-13T11:57:00] bedroom_occupancy | OccupancySensing.Occupancy = 1
[2026-07-13T12:00:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = 2520
[2026-07-13T12:05:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2538
[2026-07-13T12:20:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2530
[2026-07-13T12:30:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T12:45:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2509
[2026-07-13T13:00:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2503
[2026-07-13T13:10:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2498
[2026-07-13T13:25:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2493
[2026-07-13T13:35:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2483
[2026-07-13T13:50:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2471
[2026-07-13T14:00:00] living_room_occupancy | OccupancySensing.Occupancy = 0
[2026-07-13T14:15:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2461
[2026-07-13T14:30:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2462
[2026-07-13T14:40:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2453
[2026-07-13T14:55:00] living_room_temp_sensor | TemperatureMeasurement.MeasuredValue = 2451

## 任务
根据以下传感器与设备记录，评估目标设备当前工作状态是否正常。如异常，请给出故障判断依据。

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": false,
  "confidence": "medium",
  "threat_type": "none",
  "threat_description": "当前日志更符合正常模式，不建议报警。",
  "reasoning": [
    "推理步骤1: 正常样本是一次性短暂重连；异常样本在短时间内反复抖动。"
  ],
  "key_evidence": [
    "正常样本是一次性短暂重连；异常样本在短时间内反复抖动。"
  ],
  "recommended_actions": [
    "继续监测，无需立即处置。"
  ]
}

```json
{
  "is_anomaly": true,
  "confidence": "high",
  "threat_type": "sensor_malfunction",
  "threat_description": "客厅温度传感器读数严重偏离物理现实，显示异常高温（23.5°C-25.5°C），且与空调离线/重启事件存在时间关联，疑似传感器故障或数据漂移。",
  "reasoning": [
    "推理步骤 1: 日志显示从凌晨 03:00 到中午 14:55，客厅温度传感器 (living_room_temp_sensor) 的 MeasuredValue 持续在 2354 至 2556 之间波动。根据 Matter 协议标准及常见设备规范，该数值极大概率代表摄氏度乘以 100（即 23.54°C - 25.56°C）。",
    "推理步骤 2: 结合住户习惯分析，凌晨 03:00 至 07:00 期间，运动传感器 (occupancy) 多次报告为 0（无人），此时室内应处于夜间低温状态。然而温度读数却呈现持续上升趋势，并在上午达到峰值，这与自然昼夜温差规律及无人员活动的室内环境严重不符。",
    "推理步骤 3: 关键异常点在于 09:00 分，目标设备 living_room_ac 发生 DeviceOffline() 随后 DeviceOnline() 的重启事件。若空调正常工作，其制冷/制热逻辑应能调节室温；但在空调重启前后，温度读数并未出现预期的快速下降或稳定趋势，反而继续维持在高位并伴随剧烈波动（如 08:55 的 2534 到 09:00 的 2541，以及后续的非线性变化）。这表明温度读数并非由真实环境温度驱动，而是传感器本身发生了硬件故障、校准失效或固件层面的数据漂移（Sensor Drift/Malfunction）。",
    "推理步骤 4: 虽然厨房和卧室的温度读数也偏高（约 24-25°C），但考虑到夏季可能的高温天气，这些房间的数据相对可信度高于完全无人且本应降温的客厅。客厅作为重点监控区域，其传感器数据的持续异常且不受控，构成了明确的设备故障特征。"
  ],
  "key_evidence": [
    "凌晨 03:00-07:00 无人活动时段，客厅温度不降反升，违背热力学常识。",
    "09:00 空调重启后，温度读数未恢复正常调节模式，仍维持异常高位。",
    "温度数值随时间呈现非线性的随机波动（如 2473 -> 2486 -> 2497），缺乏真实热交换的平滑过渡特征。"
  ],
  "recommended_actions": [
    "立即检查客厅温度传感器的物理连接及供电情况，排除接触不良导致的信号错误。",
    "尝试重置客厅温度传感器固件，或将其替换为新设备进行验证。",
    "暂时手动关闭自动温控策略，避免基于错误数据导致空调过度运行或能耗浪费。",
    "联系设备制造商技术支持，排查是否存在批次性固件 Bug 或硬件缺陷。"
  ]
}
```