MQTT连接服务器，定时发布车间信息，收到服务器车间信息请求后，也可以发布车间信息。定时采集机床数据，在界面刷新显示，并通过MQTT按照工厂设备id数据的格式发布至服务器。云端可查看设备状态数据。(MQTT connects to the server and releases shop information regularly. After receiving the information request from the server shop, it can also issue wo