Application of laser diode in airplane engine nozzle temperature measurement system

Yuan-fei Xia; Qiang Ren; Xue-yuan Li

doi:10.1117/12.2044396

23 August 2013 Application of laser diode in airplane engine nozzle temperature measurement system

Yuan-fei Xia, Qiang Ren, Xue-yuan Li

Proceedings Volume 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications; 89091H (2013) https://doi.org/10.1117/12.2044396
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Thermoelectric couple was employed in traditional airplane engine nozzle temperature measurement system with the disadvantages of large size, heavy weight, big error and slow response. This paper presents a new kind of real—time temperature measurement system using laser diode InGaAs/I as light source, and using pyroelectric detector LiTa03 as optical receiving unit and using a microprocessor as signal processing center. This instrument consists of three parts: optical emitting and receiving system, signal amplifying and controlling system, and display system. The principle, structure, anti—interference measure of the system are introduced. Experimental results of airplane engine real—time temperature measurement show that temperature measurement accuracy and response time conform to our requirement in the range of 300°C一800°C and agree with prediction of theory. All these prove that the design is correct.

Citation Download Citation

Yuan-fei Xia, Qiang Ren, and Xue-yuan Li "Application of laser diode in airplane engine nozzle temperature measurement system", Proc. SPIE 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications, 89091H (23 August 2013); https://doi.org/10.1117/12.2044396

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KEYWORDS

Temperature metrology

Filtering (signal processing)

Electronic filtering

Digital filtering

Semiconductor lasers

Sensors

Modulation

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