The Nippon Signal Co., Ltd.

Akira Morisada

Masayoshi Sakai

Toshihito Shirai

Koichi Futsuhara

Hitoshi Nozawa

Katsuichi Inose

The present invention relates to a failure detecting system that enables the detection of a break in a rail and the like by a simple network configuration. Detecting units (and), relay units (A,B,A throughC) and terminal units (and) are arranged along rails (A andB). Using the rails (A andB) as transmission media, ultrasonic waves transmitted from the detecting units (and) are transmitted to the terminal units (and) by the relay units (A,B,A throughC), and when the terminal units (and) receive the ultrasonic waves, the ultrasonic waves are returned from the terminal units (and), relayed by the relay units (A,B,A throughC), and transmitted to the detecting units (and). Thus, it is judged whether there is a break in the rails (A andB), based on the ultrasonic wave reception state in the detecting units (and).

Failure detecting system

The present invention relates to an information generating apparatus for transmitting and receiving elastic waves through a rail for a train. The information generating apparatus comprises elastic wave transmitting means for transmitting elastic waves to said rail, elastic wave receiving means for receiving elastic waves transmitted from said elastic wave transmitting means through said rail, and information generating means for generating information that is necessary for controlling/monitoring associated elements of a control system for performing control operations on said train, based on an elastic wave reception signal received by said elastic wave receiving means. The information generating means has detection means for detecting presence/absence of said train in said rail, based on a reception condition of an elastic wave received by said elastic wave receiving means and for generating information representing presence/absence of said train in said rail.

Information generating apparatus using elastic waves

The present invention relates to an information generating apparatus for transmitting and receiving elastic waves through a rail for a train. The information generating apparatus comprises elastic wave transmitting means for transmitting elastic waves to said rail, elastic wave receiving means for receiving elastic waves transmitted from said elastic wave transmitting means through said rail, and information generating means for generating information that is necessary for controlling/monitoring associated elements of a control system for performing control operations on said train, based on an elastic wave reception signal received by said elastic wave receiving means. The information generating means has judgment means for making a judgment on presence/absence of rupture in said rail, based on a reception condition of an elastic wave received by said elastic wave receiving means compared with a predetermined condition and for generating information representing presence/absence of rupture in said rail.

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Kuki, Japan

Akira Morisada