成果報告書詳細
管理番号20150000000164
タイトル*平成26年度中間年報 水素利用技術研究開発事業 水素ステーション安全基盤整備に関する研究開発 光学式水素ガスセンサおよび水素ガスリークディテクタの研究開発
公開日2015/5/29
報告書年度2014 - 2014
委託先名株式会社四国総合研究所 国立大学法人千葉大学
プロジェクト番号P13002
部署名新エネルギー部
和文要約
英文要約Title : Research and development project for hydrogen utilization technology. Research and development concerning hydrogen station safety infrastructure development. Research and development of an optical hydrogen gas sensor and a hydrogen leak detector. (FY2014-FY2015) FY2014 Annual Report

(1) Research and development of an optical hydrogen gas sensor. (a) Investigation of needs and determination of target specifications. The target specifications for development was clarified, based on interviews with four companies including example hydrogen suppliers, and the Fire and Disaster Management Agency (FDMA). (Target specification : Hydrogen gas detection limit of 500 ppm or less) (b) Development of sensor chip. A simple optical layout for achieving the target specification with two optical detection systems was devised. A precise optical bench, made of ceramics, for mounting the optical elements was designed. (c) System development. The system using a low power, compact ultraviolet DPSS laser was designed. The possibility of achieving the target specifications was verified by basic experiment. Parallel transmission of laser light using an optical switch for multiple point observation was considered. Application of a semiconductor laser and a Si optical detector was examined experimentally, and the possibility of hydrogen gas detection using a semiconductor laser element of wavelength 405nm was verified. (d) Development of a MEMS monochromator. Prototypes of a Si micro grating and a MEMS rotational actuator were fabricated, and their optical and motion properties were evaluated. It was verified that these satisfied the necessary performance for development of a compact monochromator. (2) Research and development of a hydrogen leak detector. (a) Investigation of needs and determination of target specifications. The target specifications for development was clarified, based on interviews with four companies including example hydrogen supply companies, and the Fire and Disaster Management Agency (FDMA). (Target specification : Hydrogen gas detection limit of 500 ppm or less) (b) System development. The optimal optical layout for stable Stokes light generation and hydrogen gas concentration measurement was determined, by optimizing the spatial intensity profile of the laser beam irradiated on the Raman cell. Basic experiments verified that, using an ultraviolet laser of energy 3 mJ, hydrogen gas concentration of 500 ppm could be measured at a transmission distance of 1.2 m with a precision of 20% or less. The measurement signal could be obtained in the case of low concentration of 200 ppm. (c) Development of probe. Based on the basic experiment with an optical transmission path using multiple reflecting mirrors, a function model possessing high optical transmission and detection efficiency for a transmission distance of 1 m was designed.
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