A Design Of Building Air Detection System Based On The Internet Of Things

With the rapid development of computer technology, sensor technology and wireless network transmission technology, human ushered in the era of the rise of the Internet of Things, the technology of the Internet of things and intelligent building integration has become a trend building control. Building is a place for people to live and work, the quality of its air environment relevant to the health of the occupants, so the detection of air environment is very important. It is not widely used because traditional building air detection systems currently used in the presence of line deploy complex, cumbersome wiring, line maintenance costly and so on. Therefore, ZigBee wireless network technology of the Internet of things and sensor technology combined, used in building air detection, which not only can overcome the disadvantages of traditional technology, but also can real-time detection of air environmental quality, bearing the responsibility of guarding the building healthy living environment.This topic focuses on building air detection system of existing domestic and foreign, detailed analysis of the existing problems of building air detection system, designed to ZigBee mesh topology as the center of the detection system. System mainly in CC2530microcontroller core, combined with CC2591RF front-end, methane, formaldehyde, temperature and humidity sensors. The system has detected a wireless remote data transmission, management, real-time monitoring and good integrity and continuity, it makes up the deficiency of the existing building air detection system.This topic describes the wireless core module design, the terminal node design, the peripheral module design, and the remote monitoring platform design of the building air detection system. The main works done are:(1) The general planning for system is designed. Select CC2530as the CPU, combined with the RF front-end CC2591, modular design, were designed to complete the wireless core modules, terminal nodes and peripheral circuits. The peripheral circuit comprises a serial port module, power module, JTAG module and LED indicating module etc.(2) Based ZigBee2007protocol stack, were designed a small mesh network, the design is completed based on VB6.0the host computer monitoring software used to verify the networks structure,thus proving the correctness of network.(3) The network used in the building environment, data acquisition, data analysis and the measures to be taken for indoor air.Finally, through the experimental test, verify in the building air detection system, CC2530combined with CC2591, compared to the previous detection system, increasing the distance data transmission. In addition, the system designed in this paper, not only for the early detection of formaldehyde buildings, but also for the future building detection of temperature, humidity and methane has good continuity and integrity.