{
  "source": [
    { "label": "设备总数", "value": 108, "unit": "个", "icon": "database" },
    { "label": "在线设备", "value": 100, "unit": "个", "icon": "wifi" },
    { "label": "离线设备", "value": 8, "unit": "个", "icon": "exclamation-circle" },
    { "label": "故障设备", "value": 2, "unit": "个", "icon": "tool" }
  ]
}