Several schemes of building hardware communication technology of Internet of things

First of all, we realize that the final result is ：APP Or applet or website can receive data reported by hardware in real time ,APP Or applet or website can operate and control hardware devices .

Scheme 1   Use MQTT Technical realization

Buy your own servers , Set up on the server MQTT, Background technology development MQTT, Implement publish and subscribe . When the hardware side develops connection communication , Also use mqtt Implement publish and subscribe , This requires the hardware side to write code ,APP Or websites or applets should also realize publishing and subscription functions . As shown in the figure below

Option two   Hardware not developed MQTT, Use TCP Way to connect to the user , Send and receive data directly to the server or hardware

Hardware is about hardware development , Bring their own wifi or WIFI turn 4G、2G、5G Connect to our own server . Hardware and server adopt TCP Two-way communication . Then build it on our server MQTT, Background program development MQTT The client implements the subscription and publish subscription program to connect to the third-party platform MQTT, For example, Alibaba cloud Internet of things platform 、 Tencent Internet of things platform , They are all based on MQTT A platform for pattern development , our APP、 Applet 、 Website , Just go through MQTT Subscription and publish subscription can be completed The communication , As shown in the figure below

Option three  

The hardware is transmitted to the server , You need to install... On the server Swoole, This allows you to use TCP and Websocket service , Of course, we also need to install MQTT service . Hardware and server are through TCP signal communication ,TCP After receiving the data , Execute release ,websocket Execute subscription message , Finally through websocket Send in real time APP Or the applet or website shows . Again APP Or applet website through websocket Communication sends relevant control instructions to the server ,websocket Execute publishing after receiving data ,TCP Subscribe to news over there , In by TCP Send instructions to control hardware , As shown below .

 

Option four   Hardware needs to be developed MQTT agreement function , Directly connect to the third-party platform , For example, Alibaba cloud Internet of things platform or Tencent Internet of things platform MQTT  .APP Directly publish or receive message subscriptions , You can receive data , Control hardware equipment .