单片机无线火灾报警系统设计

Wireless Fire Alarm System Based on Microcontroller

针对现有的分布式火灾报警系统投资大、安装麻烦、工程量大等缺点,设计了1种基于单片机的无线火灾报警系统。系统上位机采用AT89C51单片机作为主控芯片,可分为主控模块、存储模块、人机对话模块(包括液晶和键盘)和无线射频通信模块。系统下位机以PIC18系列单片机作为主控芯片,可分为主控模块、烟感探头以及无线射频通信模块。该系统具有很好的可靠性和实时性,具有广泛的市场前景。

Aiming at the disadvantages of the existing distribute fire alarm systems, such as the large investment, troublesome installment, large project and so on, a new kind of wireless fire alarm system is designed, which is based on single-chip computer. AT89C51 is the controller of host computer, which is divided into four main modules totally： the controlling module, the saving module, the man-machine conversation module （including the LCD and keyboards） and the wireless communication module. The series of PIC18 are the controller of eompliable computer, which is divided into three main modules in total： the controlling module, the fire detectors by means of gas sensors and the wireless communication module. The system has good reliability and real-time, and it has a broad market prospect.