24 January 2008 Plastic optical fiber sensor system for detecting multi-point gas leakages
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Abstract
Combustible gases such as propane gas and methane gas are widely used in many homes and factories. However, accidents caused by gas leakage become a menace to everyday life. Therefore, development of quick and highly sensitive gas leakage sensor is required strongly. From these backgrounds, we have studied about plastic optical fiber (POF) gas leakage sensor because the POF have many advantages such as low-cost, light weight, immunity to electromagnetic noise. In this paper, the POF sensing system for multi-point gas leakages and its long term stability have been studied. In the experiment, gas concentration below 1% was detected for both propane gas and methane gas. This operation does not depend on a light wavelength. So, using several LED light sources with different wavelength, the POF sensing system for multi-point gas leakages was constructed. In the experiment using blue-, green- and red-LED, sensing of three-point gas leakages could successfully be obtained. Further more, considering its system for real application, long term stability of the sensor head was also checked and it was confirmed that the sensitivity does not change over 15 days.
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Hirofumi Suzumori, Hirofumi Suzumori, Satoshi Honma, Satoshi Honma, Masayuki Morisawa, Masayuki Morisawa, Shinzo Muto, Shinzo Muto, } "Plastic optical fiber sensor system for detecting multi-point gas leakages", Proc. SPIE 6829, Advanced Materials and Devices for Sensing and Imaging III, 682921 (24 January 2008); doi: 10.1117/12.758027; https://doi.org/10.1117/12.758027
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