The Design Of Indoor Environmental Quality Monitoring System Based On ARM

With the development of the times,the improvement of people's material life,the quality of indoor environment is more and more high.In view of the shortcomings of the traditional indoor monitoring equipment,such as incomplete detection,poor human-computer interaction and complicated wiring,In this paper,indoor monitoring as a starting point,studies a kind of indoor wireless air quality monitoring system.Firstly,from the functional requirements aspects,proposed the overall design scheme,and the related key technologies such as ZigBee technology,?C/OS-? operating system,graphics system ?C/GUI,we made a description of these key technology.After that,designing the hardware circuit,which include sensor selection and drive,ARM board and its peripheral circuit design,the design of the lower ZigBee module.On the basis of the hardware platform,the operating system of the processor STM32 and the transplant of the graphic system are provided.Then,the paper designs the sensor driver,ZigBee networking program,the ARM board multi task running program and so on.Finally,through the simulation of air environment of the whole test,and test results are given in this paper.Based on the analysis of indoor air quality monitoring device,the performance of the system reaches the expected goal.The system has the characteristics of high measuring precision,user-friendly interface,no need of complicated wiring,wide range of layout,wide monitoring range,good portability and so on.