无线火灾报警系统电磁兼容性的工程分析  

Engineering analysis to the wireless fire alarm system's electromagnetic compatibility

作　　者：汪萍萍 陈伟 洪赢政 

机构地区：[1]公安部上海消防研究所,上海200438

出　　处：《消防科学与技术》2009年第8期594-596,共3页Fire Science and Technology

基　　金：公安部应用创新项目"无线火灾报警系统研究"

摘　　要：在工程设计信道模型的基础上,通过对系统调制技术和系统处理增益在无线火灾报警系统中的实际应用的工程分析,得出了以下结论:无线火灾报警系统采用直序列扩频技术,通过降低信号传输速率、提高伪码发生器速率,改善了系统的电磁兼容性,增强了系统抗干扰能力,保证了系统的信号传输的可靠性,为系统在较为复杂的工程环境应用提供了理论依据。Based on the engineering design channel model, from the engineering analysis to the utility of the system modulating technology and the processing gain in the wireless fire alarm system, conclusions as follow were educed： The utility of the direct sequence spread spectrum technology and the use of lower information transmission rate and the higher rate of pseudo-code will improve the electromagnetic compatibility and the anti-jamming capability of the system, which will ensure the reliability of the signal transmission and provide a theoretical basis for applying the system in more complex engineering environment.

关 键 词：无线火灾报警系统 电磁兼容 直序列扩频 处理增益 

分 类 号：X924.4[环境科学与工程—安全科学] TP277[自动化与计算机技术—检测技术与自动化装置]