Title:
DEVICE FOR DETECTING INTERNAL PRESSURE OF AIR-FILLED GUNWALE PROTECTOR
Document Type and Number:
WIPO Patent Application WO/1999/027339
Kind Code:
A1
Abstract:
A detector for the internal presure of an air-filled gunwale protector which can reduce the maintenance work. The internal pressure detector is composed of internal pressure detection units (10) which are provided in the air-filled gunwale protectors fixed to underwater structures such as quay walls (2), bridge piers (3), etc., or made to float on the water and used for cushions against ships, etc., and a monitoring unit (20) which is installed in an internal pressure monitoring station (4) on land. The internal pressure detection unit (10) is driven by an electromagnetic energy with a first frequency and detects the internal air pressure of the air-filled gunwale protector (1) and transmits the air pressure information by an electromagnetic wave with a second frequency. The monitoring unit (20) transmits the electromagnetic wave with the first frequency and, at the same time, receives the electromagnetic waves with the second frequency when the internal pressures are detected to obtain the air pressure information transmitted from the internal pressure detection units (10) and displays the air pressure information on a display, etc., to let a watchman know the information. With this method, the internal pressure detector can be installed easily and, further, maintenance troubles such as battery replacement, etc. can be reduced.
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Inventors:
Hattori, Yutaka (The Yokohama Rubber Co, Ltd. Hiratsuka Plant 2-1, Oiwak, Hiratsuka-shi Kanagawa 254, JP)
Application Number:
PCT/JP1997/004296
Publication Date:
June 03, 1999
Filing Date:
November 25, 1997
Export Citation:
Assignee:
THE YOKOHAMA RUBBER CO., LTD. (36-11, Shinbashi 5-chome Minato-ku, Tokyo 105, JP)
Hattori, Yutaka (The Yokohama Rubber Co, Ltd. Hiratsuka Plant 2-1, Oiwak, Hiratsuka-shi Kanagawa 254, JP)
Hattori, Yutaka (The Yokohama Rubber Co, Ltd. Hiratsuka Plant 2-1, Oiwak, Hiratsuka-shi Kanagawa 254, JP)
International Classes:
G01L11/00; B63B59/02; E02B3/26; G01L19/08; G08C15/00; G08C17/00; G01S13/74; (IPC1-7): G01L7/00; E02B3/26; G01S13/74
Attorney, Agent or Firm:
Yoshida, Kiyotaka (Meiwa Building, 15-10 Toranomon 1-chom, Minato-ku Tokyo 105, JP)
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