The remote monitoring and remote operation equipment based on internet is more and more valuable in the era of rapid development of internet.The Raspberry Pi 3B+ is used as the main controller,DS18B20 temperature sensor is selected,HC-SR04 ultrasonic sensor and BMP 180 pressure sensor are used as the online data monitoring nodes,and OneNet is used to communicate and store the data.Users can view data in real time through Wechat applet and IoT terminals.Finally we realized the function of real-time monitoring on Wechat applet.The test results show that the system has the characteristics of low cost,small size,low power consumption,high data transmission accuracy,and meets the design requirements.
Key words
Raspberry Pi /
sensor /
OneNet Internet of Things /
Wechat applet /
communication protocol
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