title: Development of an optical gas leak sensor for detecting ethylene, dimethyl ether and methane.
abstract: In this paper, we present an approach to develop an optical gas leak sensor that can be used to measure ethylene, dimethyl ether, and methane. The sensor is designed based on the principles of IR absorption spectrum detection, and comprises two crossed elliptical surfaces with a folded reflection-type optical path. We first analyze the optical path and the use of this structure to design a miniature gas sensor. The proposed sensor includes two detectors (one to acquire the reference signal and the other for the response signal), the light source, and the filter, all of which are integrated in a miniature gold-plated chamber. We also designed a signal detection device to extract the sensor signal and a microprocessor to calculate and control the entire process. The produced sensor prototype had an accuracy of ±0.05%. Experiments which simulate the transportation of hazardous chemicals demonstrated that the developed sensor exhibited a good dynamic response and adequately met technical requirements.
authors.affiliation: Key Laboratory of Instrumentation Science & Dynamic Measurement, North University of China, Ministry of Education, Taiyuan 030051, Shanxi, China. qltan99@163.com
authors.forename: Qiulin
authors.initials: Q
authors.lastname: Tan
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Pei
authors.forename: Simin
authors.initials: S
authors.lastname: Zhu
authors.forename: Dong
authors.initials: D
authors.lastname: Sun
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
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authors.lastname: Liang
authors.forename: Wendong
authors.initials: W
authors.lastname: Zhang
authors.forename: Jijun
authors.initials: J
authors.lastname: Xiong
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