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Development of a 2-Channel Embedded Infrared Fiber-Optic Temperature Sensor Using Silver Halide Optical Fibers
School of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University, 322 Danwol-dong, Chungju-si, Chungcheongbuk-do, 380-701, Korea
Department of Energy & Environment Engineering, College of Engineering, Soonchunhyang University, 646 Eupnae-ri, Shinchang-myeon, Asan-si, Chungcheongnam-do, 336-745, Korea
* Author to whom correspondence should be addressed.
Received: 5 September 2011; in revised form: 7 October 2011 / Accepted: 9 October 2011 / Published: 11 October 2011
Abstract: 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.
Keywords: embedded sensor; fiber-optic sensor; infrared; silver halide optical fiber; thermometry
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Yoo, W.J.; Jang, K.W.; Seo, J.K.; Moon, J.; Han, K.-T.; Park, J.-Y.; Park, B.G.; Lee, B. Development of a 2-Channel Embedded Infrared Fiber-Optic Temperature Sensor Using Silver Halide Optical Fibers. Sensors 2011, 11, 9549-9559.
Yoo WJ, Jang KW, Seo JK, Moon J, Han K-T, Park J-Y, Park BG, Lee B. Development of a 2-Channel Embedded Infrared Fiber-Optic Temperature Sensor Using Silver Halide Optical Fibers. Sensors. 2011; 11(10):9549-9559.
Yoo, Wook Jae; Jang, Kyoung Won; Seo, Jeong Ki; Moon, Jinsoo; Han, Ki-Tek; Park, Jang-Yeon; Park, Byung Gi; Lee, Bongsoo. 2011. "Development of a 2-Channel Embedded Infrared Fiber-Optic Temperature Sensor Using Silver Halide Optical Fibers." Sensors 11, no. 10: 9549-9559.