利用M2M实现设施之间联动
方案设计
基于IoT物联网平台中规定引擎的M2M能力，咱们能够实现设施间联动通信，技术计划如下：
1.创立产品
1.1 油烟机
创立设施
通信Topic
1.2 燃气灶
创立设施
通信Topic
2.注册设施
2.1 油烟机设施
2.2 燃气灶设施
注册设施，并绑定指标油烟机
3.规定引擎配置 M2M规定
3.1 解决数据
SELECT attribute('targetId') as rangehoodId,status, windPower FROM "/a****h/+/user/change/rangehood"3.2 转发数据
4.设施开发
4.1 油烟机设施
设施端开发
const mqtt = require('aliyun-iot-mqtt');var options = { productKey: "替换", deviceName: "替换", deviceSecret: "替换", regionId: "cn-shanghai"};//建设连贯const client = mqtt.getAliyunIotMqttClient(options);client.subscribe(`/${options.productKey}/${options.deviceName}/user/control/params`)client.on('message', function(topic, message) { console.log("sub topic => " + topic) console.log("message => " + message)})4.2 燃气灶设施
设施端开发
const mqtt = require('aliyun-iot-mqtt');var options = { productKey: "替换", deviceName: "替换", deviceSecret: "替换", regionId: "cn-shanghai"};var pubTopic = `/${options.productKey}/${options.deviceName}/user/change/rangehood`;//建设连贯const client = mqtt.getAliyunIotMqttClient(options);//上报数据client.publish(pubTopic, getPostData(), { qos: 0 });function getPostData() { const payloadJson = { status: "on", //on,off windPower: "high" //low,middle,high } console.log("Pub Topic => " + pubTopic) console.log("Payload => " + JSON.stringify(payloadJson)) return JSON.stringify(payloadJson);}5.联机运行
5.1 设施启动
油烟机
$ node range-hood.js sub topic => /a1zTlSPM9Ni/s001/user/control/paramsmessage => {"windPower":"high","rangehoodId":"s001","status":"on"}燃气灶
$ node gas-stove.js Pub Topic => /a****h/z001/user/change/rangehoodPayload => {"status":"on","windPower":"high"}5.2 设施运行日志
【往期回顾】
1.自建MQTT集群迁徙阿里云IoT平台
2.IoT时代：WiFi配网技术分析
3.微信小程序和IoT智能家居实际
4.IoT云端通用数据解析脚本实际
物联网平台产品介绍详情：https://www.aliyun.com/produc...
阿里云物联网平台客户交换群