一种抗氢气干扰的CO传感器  

Carbon monoxide sensor of anti-hydrogen interference

作　　者：任先武[1] 徐凌[1] 周卫宏[2] 王元委[1] 王振强[1] 

机构地区：[1]中国电子科技集团公司第四十九研究所,黑龙江哈尔滨150001 [2]哈尔滨理工大学自动化学院,黑龙江哈尔滨150080

出　　处：《传感器与微系统》2008年第8期78-80,共3页Transducer and Microsystem Technologies

摘　　要：设计了一种抗氢气干扰的CO气体传感器,该传感器以半导体SnO2为敏感基材,采用三电极直热式结构、脉冲方波供电方式。研究了传感器的工作电压、采样时间对传感器灵敏度与抗干扰特性的影响。结果表明:0.3V工作电压、20s的采样时间,传感器灵敏度为10左右,抗氢气干扰系数达100以上。A kind of carbon monoxide sensor is designed. The sensing material of sensor is SnO2 semiconductor, and three electrodes direct-heating is used as heating style, square-wave pulse is used as power supply. The effects of working voltage and sampling time on anti-interference and sensitivity are investigated. The results show that sensitivity is about 10 and anti-interference coefficient is above 100 under the condition of working voltage of 0.3 V and sampling time of 20 s.

关 键 词：CO传感器 脉冲方波 采样时间 抗干扰系数 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]