Design Of Multi-parameter Air Quality Monitoring System Based On Four-Rotor UAV

In recent years,with the rapid development of China's economy,environmental pollution has become increasingly prominent.Environmental pollution not only seriously affects people's normal life and health,but also affects the sustainable and healthy development of the economy.It is urgent to take more effective environmental protection measures.Air quality detection is the most important basic work in environmental protection.At present,traditional detection methods mainly use environmental monitoring stations and manual detection.The detection range of environmental monitoring station is limited,the installation and maintenance is inconvenient,and it is difficult to locate the source of pollution.In manual detection,people carrying equipment into the polluted area may cause harm to personal safety,and the work efficiency is low,which is greatly affected by traffic conditions.Therefore,in view of the shortcomings of traditional air quality detection methods,a multi-parameter air quality detection system based on Four-rotor UAV is designed.The system has strong mobility,can expand the detection range,improve the detection efficiency,ensure the safety of personnel,and realize the three-dimensional detection of air quality.The main tasks of the design include:Firstly,according to the requirement of detection,the Four-rotor UAV is selected,and its flight principle is analyzed.The airframe coordinate system and ground coordinate system are established.According to the dynamic model,the UAV control system is designed by using the fuzzy PID control algorithm,and simulated by using MATLAB software.Then the hardware and software parts of the air quality detection system are designed to realize the detection of CO concentration,O3 concentration,SO2 concentration,NO2 concentration and temperature and humidity in the air.Modular design is adopted in the hardware part.STM32F103ZET6 is selected as microprocessor and four-electrode electrochemical sensor is used to collect target gas.At the same time,the signal conditioning circuit of electrochemical sensor,SD card storage circuit,wireless data transmission circuit and power circuit are designed.In the software part,modular design is carried out in Keil 5 environment with C language.The gas concentration and temperature and humidity detection program,SD card data storage program and wireless data transmission program are designed.Inorder to remove the influence of interference signal and improve the detection accuracy,median average filtering method is used to process the signal.And based on China Mobile Internet of Things platform OneNET,the host computer system is designed.Finally,the system is tested comprehensively.The results show that the system can work normally and steadily,and the data accuracy is within the error range,which meets the expected design requirements.Figure [56] Table [14] References [55]...