Design Of Intelligent Wireless Alarm System Based On MCU Technology

Based on the technology of single chip microcomputer,a new multifunctional wireless intelligent fire alarm system is developed.The system can realize the traditional smoke alarm function,and use mq-2 gas sensor to detect the concentration of some combustible gases.The temperature acquisition module is composed of thermistor,and the flame sensor is used to identify and monitor the flame by capturing the infrared ray emitted by the flame.The system collects and processes the four kinds of monitoring signals and sends them to the single chip microcomputer.The system uses BP neural network to process data and further improve the accuracy of alarm.The system achieves the expected design goal in the actual test,which is reflected in the alarm when the monitoring parameters exceed the preset threshold value of the system.Based on Lora wireless communication protocol,the system uses433 wireless module for short-distance wireless communication and GPRS module for long-distance transmission.The system has the features of high integration,diversified communication mode,full fire alarm function,low operation power consumption,easy to be popularized and transplanted,and can meet the functions of smoke detection,combustible gas concentration alarm,temperature monitoring and flame identification in various occasions.