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http://dx.doi.org/10.7731/KIFSE.2014.28.1.026

Development of Compensation-Type Fire Detector Using Metal-Insulator-Transition Critical-Temperature Sensor  

Jung, Sun-Kyu (Creative Research Center of Metal-Insulator Transition, ETRI)
Kim, Hyun-Tak (Creative Research Center of Metal-Insulator Transition, ETRI)
Publication Information
Fire Science and Engineering / v.28, no.1, 2014 , pp. 26-30 More about this Journal
Abstract
A Compensation-type fire detector (CFD) is operated with two functions of a differential-temperature detector and as a fixed-temperature detector. The differential-temperature detector observes a rate of temperature increase, and the fixed-temperature detector measures a given fixed temperature. The differential-temperature detector does not observe the outbreak of fire in slowly increasing temperature conditions, whereas the fixed-temperature detector is not able to observe the outbreak of fire in conditions under predetermined temperature level. We developed a CFD to compensate for weaknesses of both detectors. To compensate for the disadvantages, a sensor of the sensor metal-insulator-transition critical-temperature sensor was used. Temperature coefficient of resistance is the sensitivity for sensor. At $55^{\circ}C$, temperature coefficient of resistance of metal-insulator-transition critical-temperature sensor was 14.15%. Temperature coefficient of resistance of thermistor was about 0.5%. This CFD was operated as two ways that fixed-temperature detector and differential-temperature detector in one sensor.
Keywords
Metal-insulator transition; Critical-temperature sensor; Compensation; Fire detector;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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