I. Introduction
The environmental quality monitoring of the production workshop can only rely on traditional hand-held instruments and manual records to ensure the immediacy and accuracy of data. Therefore, a workshop environmental quality monitoring system integrating sensor technology, wireless communication technology and mobile application development technology is designed and implemented.
This system uses STM32 as the main control chip, and various sensor modules are connected to collect environmental information, and the collected data is sent to HUAWEI CLOUD through WiFi, and then transmitted to APP through HUAWEI CLOUD IoT platform. The mobile phone APP realizes the display of data and the control function of terminal equipment, so that the monitoring of the repair shop environment is more automated, simplified and informatized.
2. Design requirements
This design includes the selection and design of hardware modules, the function and design of software modules.
2.1 Selection and design of hardware modules
(1) Information collection function module design
Through temperature and humidity sensors, PM2.5 sensors, air quality sensors, flame sensors, smoke sensors and other sensors, the temperature, humidity, welding smoke concentration (PM2.5 concentration simulation), VOCs concentration, flame sensor status, Environmental information such as smoke concentration, and upload to the main control chip.
(2) Communication function module design
Upload the collected environmental information to the APP through the ESP8266WiFi module, and display the data on the APP.
(3) Design of linkage alarm device
Using exhaust fans, mist sensors, plasma generators and water pumps, the