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README.md

@@ -52,7 +52,7 @@ facility     | string | 是   | 设施点位编码（固定2位）            |
                     "type": "1",
                     "facility": "2",
                     "address": "房间东侧",
-                    "value": [ { "temp": "25.3", "humidity": "12.5" } ]
+                    "value":  { "temp": "25.3", "humidity": "12.5" } 
                 },
                 {
                     "deviceuuid": "deviceuuid2",
@@ -135,7 +135,29 @@ type   | 传感器类型     | value 类型      | 示例值
         }
     }
 }
+
 ```
+# 3.3 首次执行采集任务之后上报状态
+```json
+{
+    "method": "metric_data",
+    "params": {
+        "metric": {
+            "args": {
+                "description": "Environmental detection system started successfully",
+                "timestamp": "1763644447",
+                "host_uuid": "pemsyszrkpntfgswaevodhluicqzxplkm",
+                "level": "system_start",
+                "device_count": 3,
+                "online_count": 3
+            },
+            "type": "event"
+        },
+        "route_key": "/dthjjc/device/pemsyszrkpntfgswaevodhluicqzxplkm/event"
+    }
+}
+```
+
 event_data 通用字段说明
 字段名                | 类型   | 必填 | 说明
 ----------------------|--------|------|-------------------------------------------
@@ -147,6 +169,8 @@ level                 | string | 是   | alarm / online  等
 last_successful_time  | string | 否   | 仅离线时填写
 sensor_type           | string | 否   | 传感器类型描述
 recommendation        | string | 否   | 处理建议
+device_count          | string | 否   | 检测设备数量
+online_count          | string | 否   | 当前在线数量
 
 ### 4. 协议总览