摘要
设计一种由TGS2620金属氧化物气体传感器构建的气味罗盘系统。研制了气味罗盘的信号采样系统及辅助电路。在点气源及平流环境下对该系统进行了360°静态气源定位实验,提取传感器阻值响应比为特征量,并论证了该特征量与罗盘偏转角度α的对应关系。实验表明气味罗盘对相差30°方向的气源据有较大的响应差,以响应比值为特征量进行分析能够排除同类型传感器个体差异对分析结果的影响。
Based on TGS2620 metal oxide gas sensor,an odor compass system has been developed.The sampling system and auxiliary circuit are designed.The odor compass system is tested to locate the point odor source in 360° under the advection,and find the relation between the radio of resistance response from different sensors and the system deflection angle α.The experimental results show that the response messages for the odor sources with 30°disparity has obvious difference.And consider the radio of resistance response as the feature quantity reduces the influence from the difference between the same kinds of sensor.
出处
《传感技术学报》
CAS
CSCD
北大核心
2010年第11期1532-1535,共4页
Chinese Journal of Sensors and Actuators
基金
西北工业大学基础研究基金资助(w018103)
