{
  "_meta": {
    "category": "fire_gas",
    "description": "火灾/燃气类异常场景"
  },
  "scenarios": {
    "FG-01": {
      "name": "厨房忘关火",
      "applicable_layouts": [
        "A",
        "B",
        "C",
        "D"
      ],
      "preconditions": {
        "time_range": "any",
        "prior_activity": "住户做完饭离开厨房"
      },
      "anomaly_events": [
        {
          "time_offset": 0,
          "device": "kitchen_cook_surface",
          "attribute": "OnOff",
          "value": true,
          "note": "灶具仍在开启状态"
        },
        {
          "time_offset": 0,
          "device": "kitchen_occupancy",
          "attribute": "Occupancy",
          "value": 0,
          "note": "厨房已无人"
        },
        {
          "time_offset": 300,
          "device": "kitchen_temp_sensor",
          "attribute": "MeasuredValue",
          "value_trend": "continuous_increase",
          "note": "温度持续上升（5分钟后）"
        },
        {
          "time_offset": 600,
          "device": "kitchen_temp_sensor",
          "attribute": "MeasuredValue",
          "value": 3500,
          "note": "10分钟后温度达35°C"
        },
        {
          "time_offset": 900,
          "device": "kitchen_smoke_alarm",
          "attribute": "SmokeState",
          "value": 1,
          "note": "15分钟后烟雾传感器 Warning"
        },
        {
          "time_offset": 900,
          "device": "kitchen_smoke_alarm",
          "attribute": "ExpressedState",
          "value": 1,
          "note": "SmokeAlarm"
        },
        {
          "time_offset": 900,
          "device": "kitchen_smoke_alarm",
          "event": "SmokeAlarm",
          "note": "烟雾报警事件"
        }
      ],
      "ground_truth": {
        "is_anomaly": true,
        "threat_type": "unattended_cooking",
        "key_evidence": [
          "灶具开启状态 + 厨房无人（occupancy=0）持续超过5分钟",
          "厨房温度持续异常上升",
          "最终烟雾报警器触发"
        ],
        "expected_response": "立即提醒住户关闭灶具，如无法联系则自动关闭（如支持远程关闭）",
        "difficulty_score": 11,
        "difficulty_level": 3,
        "difficulty_label": "L3_composite_reasoning",
        "difficulty_dimensions": {
          "D1_evidence_count": 3,
          "D2_signal_directness": 2,
          "D3_cross_device": 2,
          "D4_temporal_span": 2,
          "D5_fp_similarity": 2
        }
      },
      "false_positive_variant": {
        "name": "FG-01-FP: 煲汤/慢炖（正常长时间开灶）",
        "events": [
          {
            "time_offset": 0,
            "device": "kitchen_cook_surface",
            "attribute": "OnOff",
            "value": true
          },
          {
            "time_offset": 0,
            "device": "kitchen_occupancy",
            "attribute": "Occupancy",
            "value": 0,
            "note": "人离开厨房"
          },
          {
            "time_offset": 300,
            "device": "kitchen_temp_sensor",
            "attribute": "MeasuredValue",
            "value": 2700,
            "note": "温度微升但稳定"
          },
          {
            "time_offset": 1200,
            "device": "kitchen_occupancy",
            "attribute": "Occupancy",
            "value": 1,
            "note": "住户回来检查"
          },
          {
            "time_offset": 1800,
            "device": "kitchen_temp_sensor",
            "attribute": "MeasuredValue",
            "value": 2750,
            "note": "温度保持稳定"
          }
        ],
        "key_difference": "温度上升后稳定（不持续飙升），住户定期回来检查，烟雾传感器未触发"
      }
    },
    "FG-02": {
      "name": "电器过热起火",
      "applicable_layouts": [
        "A",
        "B",
        "C"
      ],
      "preconditions": {
        "time_range": "any",
        "home_state": "某房间有电器持续运行"
      },
      "anomaly_events": [
        {
          "time_offset": 0,
          "device": "{room}_temp_sensor",
          "attribute": "MeasuredValue",
          "value_trend": "abnormal_increase",
          "note": "温度异常上升但没有空调制热/灶具开启等合理原因"
        },
        {
          "time_offset": 300,
          "device": "{room}_temp_sensor",
          "attribute": "MeasuredValue",
          "value": 3200,
          "note": "温度远超正常范围"
        },
        {
          "time_offset": 600,
          "device": "living_room_smoke_alarm",
          "attribute": "SmokeState",
          "value": 1,
          "note": "烟雾报警（如果该房间有烟雾报警器）"
        }
      ],
      "ground_truth": {
        "is_anomaly": true,
        "threat_type": "fire_risk",
        "key_evidence": [
          "温度异常上升但无合理热源（空调关闭/制冷模式，灶具关闭）",
          "上升速度超过正常烹饪或日照导致的范围"
        ],
        "expected_response": "火灾风险警报，建议住户检查该区域电器",
        "difficulty_score": 10,
        "difficulty_level": 2,
        "difficulty_label": "L2_reasoning_detection",
        "difficulty_dimensions": {
          "D1_evidence_count": 2,
          "D2_signal_directness": 2,
          "D3_cross_device": 2,
          "D4_temporal_span": 2,
          "D5_fp_similarity": 2
        }
      },
      "false_positive_variant": {
        "name": "FG-02-FP: 电暖器/取暖器正常使用",
        "description": "冬天住户开了电暖器，房间温度上升但有合理热源",
        "events": [
          {
            "time_offset": 0,
            "device": "{room}_temp_sensor",
            "cluster": "TemperatureMeasurement",
            "attribute": "MeasuredValue",
            "value": 2200,
            "note": "初始温度偏低（冬天）"
          },
          {
            "time_offset": 0,
            "device": "{room}_occupancy",
            "cluster": "OccupancySensing",
            "attribute": "Occupancy",
            "value": 1,
            "note": "有人在房间"
          },
          {
            "time_offset": 1800,
            "device": "{room}_temp_sensor",
            "cluster": "TemperatureMeasurement",
            "attribute": "MeasuredValue",
            "value": 2500,
            "note": "30分钟后温度升至25°C"
          },
          {
            "time_offset": 3600,
            "device": "{room}_temp_sensor",
            "cluster": "TemperatureMeasurement",
            "attribute": "MeasuredValue",
            "value": 2550,
            "note": "1小时后温度稳定"
          }
        ],
        "key_difference": "有人在房间且温度上升后趋于稳定（不是持续飙升），无烟雾报警触发"
      }
    },
    "FG-03": {
      "name": "CO浓度升高",
      "applicable_layouts": [
        "A",
        "B",
        "C",
        "D"
      ],
      "preconditions": {
        "time_range": "winter（冬季使用燃气设备高峰）"
      },
      "anomaly_events": [
        {
          "time_offset": 0,
          "device": "{room}_smoke_alarm",
          "attribute": "COState",
          "value": 1,
          "note": "CO Warning"
        },
        {
          "time_offset": 0,
          "device": "{room}_smoke_alarm",
          "attribute": "ExpressedState",
          "value": 2,
          "note": "COAlarm"
        },
        {
          "time_offset": 0,
          "device": "{room}_smoke_alarm",
          "event": "COAlarm",
          "note": "CO报警事件触发"
        }
      ],
      "ground_truth": {
        "is_anomaly": true,
        "threat_type": "carbon_monoxide",
        "key_evidence": [
          "SmokeCoAlarm 的 COState 变为 Warning 或 Critical",
          "CO 报警是严重安全事件，不同于烟雾报警"
        ],
        "expected_response": "紧急通知所有住户撤离，开窗通风，联系燃气公司",
        "difficulty_score": 6,
        "difficulty_level": 1,
        "difficulty_label": "L1_basic_detection",
        "difficulty_dimensions": {
          "D1_evidence_count": 1,
          "D2_signal_directness": 1,
          "D3_cross_device": 1,
          "D4_temporal_span": 1,
          "D5_fp_similarity": 2
        }
      },
      "false_positive_variant": {
        "name": "FG-03-FP: 烟雾报警器自检触发CO检测",
        "description": "烟雾报警器定期自检，短暂触发CO状态后自动恢复",
        "events": [
          {
            "time_offset": 0,
            "device": "{room}_smoke_alarm",
            "cluster": "SmokeCoAlarm",
            "attribute": "TestInProgress",
            "value": true,
            "note": "自检开始"
          },
          {
            "time_offset": 5,
            "device": "{room}_smoke_alarm",
            "cluster": "SmokeCoAlarm",
            "attribute": "COState",
            "value": 1,
            "note": "自检期间短暂触发"
          },
          {
            "time_offset": 30,
            "device": "{room}_smoke_alarm",
            "cluster": "SmokeCoAlarm",
            "attribute": "COState",
            "value": 0,
            "note": "自检结束恢复正常"
          },
          {
            "time_offset": 30,
            "device": "{room}_smoke_alarm",
            "cluster": "SmokeCoAlarm",
            "attribute": "TestInProgress",
            "value": false
          },
          {
            "time_offset": 30,
            "device": "{room}_smoke_alarm",
            "event": "SelfTestComplete",
            "note": "自检完成事件"
          }
        ],
        "key_difference": "TestInProgress=true 表明是自检触发，不是真实CO泄漏；且COState很快恢复为0"
      }
    },
    "FG-04": {
      "name": "烟雾报警器低电量时发生事件",
      "applicable_layouts": [
        "A",
        "B",
        "C",
        "D"
      ],
      "preconditions": {
        "time_range": "any",
        "device_state": "烟雾报警器已处于低电量状态"
      },
      "anomaly_events": [
        {
          "time_offset": -86400,
          "device": "kitchen_smoke_alarm",
          "attribute": "BatteryAlert",
          "value": 1,
          "note": "一天前已报低电量Warning"
        },
        {
          "time_offset": 0,
          "device": "kitchen_cook_surface",
          "attribute": "OnOff",
          "value": true,
          "note": "开始做饭"
        },
        {
          "time_offset": 600,
          "device": "kitchen_temp_sensor",
          "attribute": "MeasuredValue",
          "value_trend": "increase",
          "note": "温度上升"
        },
        {
          "time_offset": 600,
          "device": "kitchen_smoke_alarm",
          "attribute": "SmokeState",
          "value": 0,
          "note": "烟雾传感器仍显示正常——但可能是因为电量不足导致检测失灵"
        }
      ],
      "ground_truth": {
        "is_anomaly": true,
        "threat_type": "safety_device_failure",
        "key_evidence": [
          "烟雾报警器处于低电量状态",
          "厨房有高温活动但烟雾传感器未触发",
          "两个信号组合：低电量 + 温度上升但烟雾传感器无反应 → 设备可能失灵",
          "这是复合推理场景，需要关联两个独立信号"
        ],
        "expected_response": "警告住户烟雾报警器可能失灵，建议更换电池/设备",
        "difficulty_score": 13,
        "difficulty_level": 3,
        "difficulty_label": "L3_composite_reasoning",
        "difficulty_dimensions": {
          "D1_evidence_count": 2,
          "D2_signal_directness": 3,
          "D3_cross_device": 2,
          "D4_temporal_span": 3,
          "D5_fp_similarity": 3
        }
      },
      "false_positive_variant": {
        "name": "FG-04-FP: 低电量报警但传感器仍正常工作",
        "description": "报警器报了低电量，但做饭时烟雾传感器正常触发了Warning然后恢复",
        "events": [
          {
            "time_offset": -86400,
            "device": "kitchen_smoke_alarm",
            "cluster": "SmokeCoAlarm",
            "attribute": "BatteryAlert",
            "value": 1,
            "note": "一天前报低电量"
          },
          {
            "time_offset": 0,
            "device": "kitchen_cook_surface",
            "cluster": "OnOff",
            "attribute": "OnOff",
            "value": true,
            "note": "开始做饭"
          },
          {
            "time_offset": 600,
            "device": "kitchen_smoke_alarm",
            "cluster": "SmokeCoAlarm",
            "attribute": "SmokeState",
            "value": 1,
            "note": "正常检测到油烟"
          },
          {
            "time_offset": 900,
            "device": "kitchen_cook_surface",
            "cluster": "OnOff",
            "attribute": "OnOff",
            "value": false,
            "note": "做完饭关火"
          },
          {
            "time_offset": 1200,
            "device": "kitchen_smoke_alarm",
            "cluster": "SmokeCoAlarm",
            "attribute": "SmokeState",
            "value": 0,
            "note": "油烟散去，恢复正常"
          }
        ],
        "key_difference": "虽然电池低但传感器仍然能正常检测烟雾（SmokeState变1又恢复0），说明设备没失灵"
      }
    }
  }
}