Development of a 2-Channel Embedded Infrared Fiber-Optic Temperature Sensor Using Silver Halide Optical Fibers

Sensors

Wook Jae Yoo¹  Kyoung Won Jang¹  Jeong Ki Seo¹  Jinsoo Moon¹  Ki-Tek Han¹  Jang-Yeon Park¹  Byung Gi Park² 

[1] School of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University, 322 Danwol-dong, Chungju-si, Chungcheongbuk-do, 380-701, Korea; E-Mails:;Department of Energy & Environment Engineering, College of Engineering, Soonchunhyang University, 646 Eupnae-ri, Shinchang-myeon, Asan-si, Chungcheongnam-do, 336-745, Korea; E-Mail:

关键词: embedded sensor;    fiber-optic sensor;    infrared;    silver halide optical fiber;    thermometry;   

DOI  :  10.3390/s111009549

来源: mdpi

【 摘 要 】

A 2-channel embedded infrared fiber-optic temperature sensor was fabricated using two identical silver halide optical fibers for accurate thermometry without complicated calibration processes. In this study, we measured the output voltages of signal and reference probes according to temperature variation over a temperature range from 25 to 225 °C. To decide the temperature of the water, the difference between the amounts of infrared radiation emitted from the two temperature sensing probes was measured. The response time and the reproducibility of the fiber-optic temperature sensor were also obtained. Thermometry with the proposed sensor is immune to changes if parameters such as offset voltage, ambient temperature, and emissivity of any warm object. In particular, the temperature sensing probe with silver halide optical fibers can withstand a high temperature/pressure and water-chemistry environment. It is expected that the proposed sensor can be further developed to accurately monitor temperature in harsh environments.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.