An Secure Design of Zigbee-based Wireless Forest Air Quality Monitoring

Under the background of aggravated global warming caused by the accelerated worldwide industrialization process, all countries are pursuing carbon neutrality and carbon peak. Meanwhile, considering that the tree growth is subject to concentrations of oxygen and carbon dioxide in forest areas[1], and people’s daily life is closely related to the content of all kinds of gases in urban air, an outdoor air quality monitoring device is designed based on Zigbee wireless transmission. By taking the STM32F103ZET6 embedded processor as the core controller, this device applies high-precision AO-03 oxygen sensors and M702-A seven-in-one air quality sensors to collect the concentration of various gases in the air. Then, relevant data, after being read and processed by the micro-processor, is transmitted to a computer terminal through the DL-22 module so as to evaluate whether the gas concentrations have reached alarm thresholds, thereby initiating corresponding procedures if so. According to the results of comparison between data collected in different environments and the real-time data from the China National Environmental Monitoring Center, the designed monitoring system offers higher measurement accuracy, and features better energy efficiency as well as longer battery life.