基于CPLD和单片机实现的无线报警系统

无线报警系统的发射装置，利用CPLD（复杂可编程逻辑器件）的可编程特性、丰富的内部资源，设计了包括地址编码电路、FSK调制信号及各路控制信号在内的数字系统，减小了体积，提高了系统的可靠性。接收系统利用专用集成电路芯片NC3372解调，89C51单片机对地址码进行解码，并采用了多种抗干扰措施，有效地减小了误报率。应用表明，系统具有可靠性高，抗干扰能力强，误报率低的特点，完全能满足防火、防盗等报警的要求。

Wireless Alarm System Basing on CPLD and Micro-controller

Making use of programming characteristic and rich inner resource of CPLD(Complex Programmable Logic Device),a wireless alarm sending system was designed,which include address encoding circuit,FSK modulate signal and each channel controller signals to decrease volume and increase reliability of the system.With the help of an ASIC MC3372 to demodulate and a Micro-controller 89C51 to decode the address signal in receiving system,a decoder is designed.These means,combining with some anti-interference methods,have effectively decreased the error-alarm rate.Experiments show that the wireless alarm system has the virtue of high reliability,high anti-disturbance ability and low error-alarm rate to meet the needs of alarm for fireproofing and guard against theft etc.