摘要
空气中低浓度一氧化碳的监测及如何将监测信号实时、低成本的传输到监测点是关心的问题,针对问题,研究了采用LED为光源,用调制加在法布里-珀罗腔上的驱动电压和单波长双光路差分吸收法相结合的方法来测量低浓度一氧化碳气体的光谱吸收型气体传感器.运用无线传感器网络实时监测、感知和采集网络分布区域内的一氧化碳浓度,利用CDMA网络实现远程监控.实现在线,实时监测,降低了成本,提高了效率.
How to measure low concentration carbon monoxide accurately and sensitive in air and how to send the single to checkpoint momently and cheaply are the questions we always concern. Aim at this concern, an spectrum absorption type gas sensor is studied. Using LED as light source, carbon monoxide gas concentration can be detected by modulating Fabry-Perot cavity＇s driving voltage and single wavelength doublepass difference absorbing. Based on wireless sensor network, carbon monoxide concentration can be monitor, appreciate and collect in the network district, realize long-distance monitor by CDMA network. Real-time on-line monitor is realized, the cost is lowed, and the efficiency is advanced.
出处
《传感技术学报》
CAS
CSCD
北大核心
2007年第4期925-928,共4页
Chinese Journal of Sensors and Actuators
关键词
无线传感器网络
检测
光谱吸收
一氧化碳
浓度
wireless sensor network
detecting
spectrum absorption
carbon monoxide
concentration
