The Design Of The Building Fire Detection System Based On Microwave Technology

With the development of our country's economy and urbanization,more and more people move to urban and population is more and more intensive,resulting in various kinds of high-rise buildings and material warehouse in city.The existence of these buildings solves the current problems caused by urbanization,but also caused great security risks.In case of a fire,these buildings may accelerate the spread of the fire and may be a great obstacle to the rescue activities,which will cause great threat to people's property and life safety,and it is likely to cause serious consequences.Therefore,the installation of a good performance of the fire detection device is very important.At present,most of the installation of fire detectors work mainly for certain kinds of fire parameter detection and the fire has developed to a certain level when the fire detector sends alarm.The infrared fire detection,which works sensitively in detection and alarm,cannot work normally if the blazes are obstructed by clutter items indoor.Under this background,looking for a technology to penetrate the barrier of fire detection for indoor environment obstacle is more valuable.In this paper,the characteristics of microwave radiation and environmental factors are considered,and a microwave fire detection system based on the Internet of things is designed.The hardware of the system mainly includes the microwave fire detection system,the coordination node,the routing node and the sensor terminal node,wherein the microwave fire detection system comprises a detecting antenna and a receiver.The platform of the Internet of things receives and sends the signal in the microwave fire detection system,at the same time it can also receive signals from other detectors.This topic to complete the main work includes:Firstly,design the overall scheme of microwave fire detection system based on the Internet of Things.The detector outputs voltage signals after the receiver processes the microwave fire detection system,and insert these signals into P0 of ZigBee module,using ADC module of CC2530 to finish the process of modules,and then transmitted in ZigBee network.Secondly,design the probe antenna.According to the microwave radiation emitted by the fire,selected Ku band for detecting the frequency of the antenna,a high gain array antenna is designed.Thirdly,design the processing scheme of receiver.Due to the relatively low power of the microwave radiation,a high sensitivity receiver is designed.Finally,construct the ZigBee network.According to the requirements of the system,the program of each node is designed,a small ZigBee network is set up,and the microwave fire detection system is tested in the ZigBee network.Figure[66] table[8] reference[69]...