基于集成气敏传感器阵列的电子鼻系统环境响应特性分析

Analysis of Response of Electronic Nose on Circumstance Factors

基于集成气敏传感器阵列和多传感器信息融合技术的电子鼻系统 ,可用于气体 /气味的定性定量识别 .在实际应用中 ,被识别样本的浓度、样本环境的温度和湿度参数等都对电子鼻系统的响应特性有较大的影响 .本文分别利用纯净空气及乙醇或葡萄酒作为载气及分析样本 ,对电子鼻系统响应特性与气敏传感器工作温度以及样本温度、环境湿度、样本浓度间的依赖关系进行了实验分析 ,并分别给出了它们间依赖关系的实验结果 .

Electronic nose system based on integrated gas sensitive sensors array and multi sensors information fuse technology can be used to identify qualitative and quantitative gas/odor. In actual applications, the factors of sample concentration, sample temperature and humidity of circumstance will have strict effects on the response characteristic of the electronic nose system. In this paper, we study the relations of the system response characteristic changing with the sensors work temperature and sample temperature, humidity and concentration of sample using the home made experimental system. In the experiments, pure and dry air has been used as carrier air and ethanol in different concentration, while wine and water have been used as sample.