The Research Of Intelligent Building Fire Monitoring System Based On ZigBee Technology

With the development of social economy, intelligent building has become an indispensable carrier in people’s daily life. But the premises environment is complex and contains all kinds of electrical equipment, decorative materials, coupled with relatively high floors, the building is home to more people, relatively little space. Once there is a fire, the fire area will spread out rapidly, resulting in a chain reaction, increase the difficulty of the rescue, causing serious injury and property damage. Traditional cable fire monitoring system wiring complexity, poor reliability, high maintenance costs, in some remote corners can not be real-time wiring, there are a lot of limitations. And with the rapid development of networking technology, the wireless sensor network fire disaster monitoring system, installation is simple and easy and convenient, without wiring, wide range and low cost to a good run in the premises, to complete the real-time monitoring of the fire, and has a good application prospect.In this paper, we design a kind of intelligent building fire control system based on ZigBee technology, which is based on the existing all kinds of wireless sensor networks. The system consists of four parts, the terminal data acquisition node, the routing node, the coordinator node and the monitoring center. The system can realize the monitoring and alarm function of the fire through the real-time measurement of the environmental parameters in the building. In addition, when a fire occurs, the system can also realize the positioning function of the fire personnel into the fire scene, greatly improving the efficiency of the fire and the safety of personnel. System design is divided into two parts, hardware and software. In the hardware design, the system uses CC2530 chip as the main control chip of ZigBee node. In the terminal data acquisition node through the deployment of temperature and humidity, smoke and CO sensors to collect the environmental parameters of buildings. Routing node through the increase in the RF front-end to achieve further distance transmission, and finally through the design of the serial port to achieve coordination and monitoring center communication. In the software design, the system uses the tree topology structure to build a ZigBee network, using Z-Stack company’s TI protocol stack detailed design system of the various functional modules. According to this system, using C# Visual 2010 development environment to design the monitoring system of the host computer software, and the use of RSSI algorithm and Bounding-box positioning algorithm to achieve the positioning of the fire.Finally, through the test, the system can successfully networking and data collection. In the monitoring process of data transmission, communication distance is in line with the requirements. When the abnormal situation occurs, the system can alarm in time, basically meet the needs of the system.