Visual sensing and range measurement by scanning of carbon dioxide laser

Koichi Kawata, Hidemi Takahashi, Osamu Yamada, Minoru Kimura, Hiroshi Naito

研究成果: Conference contribution

抄録

A laser vision sensor has been developed to enable range measurement and identification of targets through flames, smoke, and fog which are invisible to the human eye. This vision sensor employs a 10.6 μm-wavelength carbon dioxide laser for its long wavelength. The target is scanned two-dimensionally by the laser beam, directed by a pair of galvanometer mirrors, to produce the target image and measure the range of the target. The laser beam, amplitude-modulated to 5 MHz with an electro-optic modulator, is projected onto a target, and the reflected beam is detected by a cadmium mercury telluride detector. The phase difference between the projected and reflected light signals is used to provide range data up to 30 m. The indoor test is carried out with a 1 cubic meter box in which flames, smoke, and fog can be generated. The laser beam is projected through this box, and the targets behind this box are detected. The reproduced image is sufficient for identification through flames, smoke, and fog.

本文言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
出版社Publ by Int Soc for Optical Engineering
ページ176-182
ページ数7
ISBN(印刷版)081940862X
出版ステータスPublished - 1992
外部発表はい
イベントAcquisition, Tracking, and Pointing VI - Orlando, FL, USA
継続期間: 1992 4 221992 4 24

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
1697
ISSN(印刷版)0277-786X

Conference

ConferenceAcquisition, Tracking, and Pointing VI
CityOrlando, FL, USA
Period92/4/2292/4/24

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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