Rail breakage detection device and rail breakage detection system

A rail breakage detection device, comprising:

• a seam detector which detects passage of a joint of a rail and outputs seam detection information;
• a train position detector which detects a position of a vehicle of a train and outputs train Position information;
• a map storage which stores information on map information including information associating parts of the rail with joints of the rail, and outputs the map information;
• the rail breakage detection device receives transmitter state information, receiver state information, and reception state information, the transmitter state information indicating whether a rail signal transmitter to send a rail signal is normal, the receiver state information indicating whether a rail signal receiver to receive a voltage induced by the rail signal is normal, the reception state information indicating whether an induced voltage is received by the rail signal receiver,
• the rail breakage detection device performs rail breakage detection on a basis of the transmitter state information, the receiver state information, and the reception state information,
• wherein the rail breakage detection device determines that rail breakage occurs in a case where the transmitter state information and the receiver state information are normal, and the reception state information is abnormal,
• wherein, in a case where the transmitter state information and the receiver state information are normal and the reception state information is normally received, a location where a voltage induced by the rail signal crosses a preset voltage threshold is identified as a rail breakage location, and wherein when the identified rail breakage location coincides with a particular joint of the rail in the map information, a determination is made that a cable interconnecting parts of the rail has been cut.

A rail breakage detection system comprising:

• a rail signal transmitter to send a rail signal while checking an operational state of the rail signal transmitter and outputting transmitter state information;
• a rail signal receiver, mounted on a train, to receive a voltage induced by the rail signal and output reception state information while checking an operational state of the rail signal receiver and outputting receiver state information;
• and
• a rail breakage detector to detect breakage of a rail on a basis of the transmitter state information, the receiver state information, and the reception state information,
• wherein the rail breakage detector determines that rail breakage has not occurred in a case where the transmitter state information and the receiver state information are normal, and the reception state information is abnormal, when there are a plurality of trains in a same insulating section of the rail.