Vehicle mounted methane detector by means of LD spectroscopy combined with a mobile GIS
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- Iseki Takaya
- Tokyo Gas Co.
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- Ookita Yuji
- Tokyo Gas Co.
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- Kotsubo Hironori
- Tokyo Gas Co.
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- Tai Hideo
- Tokyo Gas Co.
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- Kimura Kiyoshi
- Anritsu Co.
Bibliographic Information
- Other Title
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- 携帯型マッピングシステム連動車載式LD分光メタン検出装置
- ケイタイガタ マッピング システム レンドウ シャサイシキ LD ブンコウ メ
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Abstract
We have developed a vehicle mounted methane detector by means of 1.65-micron LD (Laser Diode) spectroscopy combined with a mobile GIS (Geographic Information System). The detector is used for high-speed survey of gas leakage from underground pipelines.<br>The detection limit of the detector is about 70 ppb in optical path length of 1 meter with time constant of 1 second. This high sensitivity is achieved by second-harmonic detection of modulation frequency of the LD the center wavelength of which is stabilized on the center of an absorption line of methane.<br>The position of the vehicle is determined with accuracy of 1-3 meters by a vehicle positioning machine which is connected to a DGPS (Differential GPS, GPS: Global Positioning System) receiver and a fiber-optic gyroscope. Survey tracks and detection points are displayed and recorded on the mobile GIS which consists of information of pipeline network, streets, buildings and so on.
Journal
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- IEEJ Transactions on Electronics, Information and Systems
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IEEJ Transactions on Electronics, Information and Systems 118 (5), 624-629, 1998
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001204607377408
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- NII Article ID
- 130006843317
- 10002813695
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- NII Book ID
- AN10065950
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- ISSN
- 13488155
- 03854221
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- NDL BIB ID
- 4469903
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed