Ultrasonic Signal-Transmission Techniques for Compact Microtunneling Systems

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This paper describes ultrasonic transmission techniques for sensor signals transmitted through water-filled pilot pipes for underground microtunneling systems. Underwater ultrasonic waves are expected to be used for transmitting the orientation and location signals of a remote controlled machine. We have investigated the relationship between ultrasonic transmission loss and frequency for propagation distance in water-filled pipes. Digital signals can be transmitted at 100 bps for more than 50m distance in 80-mm-diameter steel pipes by using underwater ultrasonic pulse waves over 300kHz. A compact prototype ultrasonic transmitter and receiver are developed, making it possible to transmit and receive digital signals by processing their signal waveforms through flowing water in the pilot pipes. Field trials indicate a range of signal transmission of pitching angle over 40-m distance for an actual compact microtunneling system.

収録刊行物

  • 電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society  

    電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society 117(9), 456-464, 1997-09 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10004832506
  • NII書誌ID(NCID)
    AN1052634X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13418939
  • NDL 記事登録ID
    4275514
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-B380
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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