Importance

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Abstract

The present invention relates to an internal-pressure detection apparatus for a pneumatic fender that can reduce the labor of maintenance. The internal-pressure detection apparatus is configured of an internal-pressure detection unit 10 provided in a pneumatic fender that is fixed to an underwater structure such as a quay 2 and bridge pier 3 or floated and is used as cushioning material for a ship or the like, and a monitor unit 20 provided in an internal-pressure monitoring station 4 on land. The internal-pressure detection unit 10 is driven by the energy of an electromagnetic wave having a first frequency, and detects internal air pressure of the pneumatic fender 1; transmits this air pressure information by an electromagnetic wave having a second frequency. The monitor unit 20 not only transmits the electromagnetic wave, having the first frequency, at the time of internal air pressure detection, but also receives the electromagnetic wave having the second frequency, and obtains the air pressure information transmitted from the internal-pressure detection unit 10; informs a monitoring person of this air pressure information with displaying the air pressure information on a display unit or the like. Thereby, it is possible to easily install the internal-pressure detection apparatus and to reduce the labor of maintenance for battery change or the like.

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First Claim