Research On Indoor Environment Monitoring System Based On ZigBee

With the rapid economic development in our country,the industrial scale has been gradually expanded,making the environmental issues become increasingly prominent.In recent years,haze weather has appeared frequently in various regions,resulting in the decline of air quality,and people's normal life has been seriously disturbed.Moreover,in recent years,hazy weather frequently occurs in various regions,resulting in the decline of air quality and the serious disturbance of people's normal life.Indoor air quality is an important factor in people's health.Therefore,it is particularly important to start the research on indoor air quality monitoring,especially in places where the space is relatively closed and the crowds are concentrated,such as offices,classrooms,shopping malls and so on.An indoor air quality monitoring system needs to display the air quality of multiple rooms in real time,so that monitoring and warning purposes can be achieved.Therefore,this paper designed a multi-point real-time monitoring system for indoor air quality in a number of physical quantities.This system mainly takes CC2530 as the core processor,composes the wireless data communication network through the ZigBee module and the GPRS module.The system uses LabVIEW software designed PC monitoring interface,according to the set value can effectively monitor and alarm.The specific research contents of this paper are as follows:1.Research on Wireless Sensor Networks.This paper has analyzed the architecture and features of wireless networks,in-depth study of ZigBee technology and GPRS technology,mainly for ZigBee technology network topology and protocol framework,combined with GPRS network proposed indoor environment monitoring system overall program.2.Indoor air quality monitoring system hardware design.The hardware and hardware circuits design of the monitoring terminal,wireless routing node and wireless gateway node :including micro-control unit CC2530 module,SIM900 A communication module,power module,JTAG interface.3.Indoor air quality monitoring system software design.By analyzing the operating mechanism of ZigBee network layer,the networking of gateway nodes and wireless transmission between nodes are realized.In order to reduce the system energy consumption,this paper studies the Particle Swarm Optimization based clustering routing algorithm(PSO-DH).It adopts the strategy of double cluster heads to make the energy consumption of cluster heads disperse among the main cluster head and vice cluster head,so as to prolong the life of the network.4.Testing and analysis of the system.System communication capabilities were tested on Packet Sniffer software.Monitor interface design in LabVIEW software: including monitoring interface design of temperature and humidity,PM2.5 and CO concentration.According to the requirements of the parameters set the alarm value,on the PC to achievereal-time display of collected data analysis and alarm functions.Through the test and analysis,the communication between nodes is normal,and when the routing node is damaged,the terminal node can also continue to communicate with the gateway node,so the networking is reliable.PC monitoring software shows the data is accurate,and realizes the real-time monitoring system design of the indoor environment.The system cost and energy consumption is lower,it has a longer working life and higher degree of automation to make users more convenient.