成果報告書詳細
管理番号20150000000163
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 水素火炎可視化機能を有する監視システムの研究開発
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
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 concerning monitoring system with functions for hydrogen flame visualization. (FY2014-FY2015) FY2014 Annual Report

(1) Based on the results of interviews with energy supply companies and hydrogen infrastructure companies, the target for our research and development project has been set as "the reliable detection of hydrogen flames a few centimeters long from a distance of 5 m." (2) It is important to use cameras at the same angles of view in image overlapping techniques for visualizing hydrogen flames, which involve taking images of light emissions from hydrogen flames simultaneously using two or more dedicated cameras, and processing the images obtained using software applications, in order to display overlapping visible images. A study was carried out with triple-wavelength spectroscopy for three eyes including triple-wavelength spectroscopy for one eye, which serves as a technique for controlling shifts in angles of view. Based on the results of the study, a prototype model was made for functional verification purposes and imaging tests were performed on hydrogen flames indoors and outdoors using the model. As a result, these tests, whether indoors or outdoors, showed the validity of triple-wavelength spectroscopy for three eyes. Namely, they showed that very small hydrogen flames can be visualized at a distance of 5 m, for example. (3) Hydrogen flame visualization involves a technique for imaging light emissions from hydrogen flames and the processing images obtained. In view of this, a multilateral study was carried out on whether this technique could also be used to monitor various types of image taken. Consequently, the study suggested the possibility that the technique could be used to monitor far-infrared images. It was found that in daytime it is difficult to distinguish between the background and invading objects because of small differences in temperature (brightness) among road surfaces, people, and vehicles, while at night invasion detection was possible because these differences were large. A simulation of far-infrared-light-based invasion monitoring showed that temperature differences should be generated intentionally for events that cause no temperature differences in videos. (4) Areas within 8 m (distance from flame) of dispenser and pressure accumulator peripheries fall under hazardous areas identified as Zone-2. All pieces of electrical equipment installed within these areas are required to be of an explosion-proof construction. A study was also carried out on optical-fiber-based image transmission methods, as alternatives to the explosion-proof construction of electrical equipment containers. It was confirmed that there was a possibility that such methods could be developed, although some problems remain to be solved.
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