bullet On-line Magazine 'Sensors & Transducers' (S&T e-Digest)

    (ISSN 1726- 5479)


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2000-2002 S&T e-Digest Contents


Vol. 39, Issue 1, January 2004, pp. 94-99




Detect Different Gases with a Single Sensor by Dynamic Measurements


Zheng Jiao, Minghong Wu, Jianzhong Gu, Deqing Wang, Yanli Wang


Shanghai Applied Radiation Institute, Shanghai University,

Shanghai 201800, China, e-mail: jiaozheng@yahoo.com




Received:  6 December 2003        /Accepted: 14 January 2004         /Published: 18 January 2004


Abstract: Gases have different active energy when adsorbing and reacting on the surface of sensitive materials. And the active energy will be changing along with temperature's change. According to this thought, a new method of knowledge acquisition is presented in this paper to test the dynamic gas sensitive characteristics of gas sensor. This novel measurement can get characteristic curves for different gases, so that it is possible to Detect different gases with a single sensor by Dynamic Measurements.


Keywords: dynamic process; characteristic curve; adsorption; sensitive


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