中文摘要：

利用气体传感器阵列结合判别软件，可用于气体的定性识别。本系统采用气体传感器MQ211组成阵列，结合气室和必要的电路，设计了实时数据采集判别系统，介绍了判别系统的构成与实验过程，实验结果表明：本系统能准确判别多种易挥发化学品。

英文摘要：

Use of gas sensor array and recognition sofeware can be used to identify qualitative gas. Six gas sensors MQ211 are chosen to compose the gas sensor array, and an on line data acquisition and recognition system with gas vessel and circuit is designed to distinguish different gas. The composition of this recognition system and experimental procedures are presented. Experimental results show this sysytem is able to diagnose several volatile chemicals accurately.