Design of Indoor Formaldehyde Monitoring System Based on Wireless Network
Aiming at the problem that the traditional indoor formaldehyde detector cannot monitor the change of formaldehyde concentration at multiple measuring points at the same time,this study designs an indoor formaldehyde monitoring system based on wireless network.The moni-toring system includes three parts:acquisition terminal,coordinator and upper computer.The acquisition terminal obtains environmental change data through formaldehyde sensor and temperature and humidity sensor,and sends it to the coordinator by ZigBee wireless networking.After receiving the data,the coordinator writes it into OLED screen and transmits it to the upper computer through serial port,and uses python script to insert real-time data into MySQL database.The upper computer reads and displays the data in MySQL library on the web page based on Apache server and PHP language.After testing,the online monitoring of formaldehyde concentration in indoor multi-rooms is realized.The coordinator OLED screen and browser page display data changes in real time,and the local or cloud monitoring records can be viewed through the computer and mobile terminal.Experiments show that the system has high stability,simplicity and flexibility,and has high practical value and application prospect.
ZigBeeformaldehyde concentrationmonitoring system designdatabase
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