期刊
IEEE SENSORS JOURNAL
卷 10, 期 2, 页码 225-234出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2009.2033259
关键词
Gas sensor transfer function; immersion diode optopairs; nondispersion infrared (NDIR) gas sensor; sensor instrument function
资金
- Foundation for Assistance to Small Innovative Enterprises (FASIE) [GK 4269p/4719]
- EC [224625]
This study presents a comparative analysis of parameters of infrared radiation source and detector hardware that are most important for the creation of portable optical nondispersive infrared (NDIR) gas sensors. An analytical model of the optical gas sensor is proposed. The notions of an instrument and transfer functions of the sensor as a measurement device are introduced. Capabilities of the model have been demonstrated by the example of carbon dioxide sensor based on immersion diode optopairs. Validity of the model is proved by good coincidence of calculated and experimental data. Analytical description of the transfer function of a NDIR carbon dioxide sensor allowed us to carry out the comparative analysis of potential sensitivity of sensors based on different hardware produced by basic fabricators of IR components.
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