Abstract

This article explores the application of NB-IoT technology in the Internet of Things and highlights the Shadow device and data synchronization features provided by the Aliyun platform. NB-IoT is a low-power, wide-coverage communication technology for large-scale IoT devices. The Shadow device facilitates real-time synchronization and remote control of device status, while data synchronization enables efficient monitoring and management of IoT devices. These technologies offer an effective solution for IoT applications.

Referance

aliyun 帮助手册

准备

已在阿里云新建设备

属性上报数据格式

{
    "method": "update", 
    "state": {
        "reported": {
            "z": -1
        }
    }, 
    "version": 1
}

设备主动获取

先订阅 /shadow/get/ProductKey/DeviceName

AT+QMTSUB=0,1,"/shadow/get/ProductKey/DeviceName",1\r\n

在发布 /shadow/update/ProductKey/DeviceName

AT+QMTPUB=0,1,1,0,"/shadow/update/ProductKey/DeviceName"\r\n

# 发布内容
{
    "method": "get"
}

# 按照16进制发送
\x1a