扩频电源总线火灾探测与联动控制系统

WIRE BUS USING SPREAD SPECTRUM SYSTEM FOR FIRE DETECTION AND EXTINCTION

本文提出一种基于电源线作为信号传输总线的火灾探测与联动控制系统.该系统把扩频通信技术应用于火灾探测与联动控制系统,利用扩频技术的低密度功率谱、强抗干扰性等特点,减小了一般仅用FSK或ASK方式调制的利用电源线系统作为通信信道系统误码率高的缺点,本文对扩频通信的误码率做了分析.

This paper is devoted to the system for fire detection and extinction which uses power line as bus. And the spread spectrum technology is introduced to the system for fire detection and extinction. According to the low power density and high interference suppression characteristic of the spread spectrum communication system, it can decrease the high error code rate of the system which only uses FSK or ASK modulation method. The characteristic of error code probability in this system is analyzed.