摘要
针对煤矿瓦斯监测系统中催化传感器功耗高的问题,提出了采用脉冲供电方式对传统供电方式进行改进的方法。分析了载体催化元件的工作特性和脉冲供电原理;通过实验研究了不同CH_4浓度的标准气样下,供电脉冲频率、脉宽(即占空比)与传感器灵敏度之间的关系。实验结果表明:和普通催化传感器相比,采用脉冲供电的将会很大程度上降低催化传感器的功耗,延长便携式设备的生命周期;同时,分析得到采用脉冲供电的可行性和最佳频率。
Aiming at problem of high power consumption of catalytic sensor in coalmine gas monitoring system, a way using pulse power supply methods to improve traditional mode of power supply is proposed; operating characteristic of catalytic elements of carrier and principle of pulse power supply are analyzed ; through experiment, different concentrations of CH4 gas samples under standard, relationship of pulse frequency, pulse width and sensor sensitivity are studied. Experimental results show that compared with ordinary catalytic sensors, using pulse power supply will largely reduce power consumption and prolong life cycle of portable devices;feasibility and optimal frequency using pulsed power supply are obtained.
出处
《传感器与微系统》
CSCD
北大核心
2014年第12期31-33,41,共4页
Transducer and Microsystem Technologies
基金
国家科技支撑计划资助项目(2012BAH12B01
2012BAH12B02)
关键词
瓦斯催化传感器
低功耗
脉冲供电
脉冲频率
脉宽
传感器灵敏度
gas catalytic sensor
low power consumption
pulse power supply
pulse frequency
pulse width
sensor sensitivity
