Design And Implementation Of Indoor Environment Monitoring System Based On ARM

With the improvement of living standards,people's demands for daily living environment are becoming higher and higher.From the renovation of new houses to the occupancy,the pollution problem of indoor environment has always existed and affects human health all the time,and the relevant monitoring systems on the market are fewer.Therefore,the research of indoor environment monitoring system is of great significance.In view of the above problems,in order to achieve long-term monitoring of formaldehyde pollution in house decoration,indoor temperature and humidity,PM2.5 particles and CO concentration,the thesis designs and implements an indoor environment monitoring system based on ARM.Through the application of sensor technology,embedded technology,wireless communication technology,combined with the PC remote monitoring platform and mobile terminal APP,the system realizes the indoor environment parameters of the collection,management,remote query control and other functions,which can be used for the short-time detection as well as long-term data query management.The system designed in the thesis consists of three parts: a data collector,a monitoring center and a mobile terminal APP.Data collector uses ARM microcontroller based on Cortex-M3 kernel,it transplants ?C/OS-? real-time operating system and FATFS file system,and works through the peripheral interface driven sensor module and GPRS data transfer module,it also completes collection,storage and remote delivery of the indoor field temperature and humidity,formaldehyde,PM2.5 particles and CO air pollutant concentrations.The monitoring center software is implemented by QT programming.By setting up MySQL related database,it creates TCP server to provide users with remote management function of environmental data.Through the operation of the UI interface,the user can realize the remote inquiry of the real-time data,historical data and alarm data of the indoor environment.The mobile terminal APP establishes the network communication with the data collector through the TCP server,which is convenient for outdoor users to monitor the indoor environment in real time.At the end of the thesis,the test environment is built,the system is connected and the functions of each module are tested.Through the analysis of the test results,the environment monitoring system designed in the thesis satisfies the functional requirements,the data collector can reflect the concentration of indoor air pollutants in time,the monitoring center can provide a good operation interface for users,at the same time,it can also accurately receive data,store management data and forward control instructions;mobile phone terminal APP can achieve the remote query control effect,which is in line with the design requirements of the system.