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US 10,946,879 B2Granted
Rail fracture detection device
AssigneeMitsubishi Electric Corporation
InventorsMasashi Asuka, Tomoaki Takewa, Wataru Tsujita, Yoshitsugu Sawa, Daisuke Koshino
Life of this patent
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Abstract
The rail fracture detection device detects a rail fracture in a section provided with the track circuit by determining presence or absence of a rail fracture and determining presence or absence of a train on a rail by using information on whether a relay of the track circuit is activated or deactivated and information on a current value of current flowing in the track circuit.
Claims11
A rail fracture detection device comprising:
- a processor;
- and
- memory storing instructions that, when executed, cause the processor to:
- in a case where relay information on a track circuit indicates deactivation of a relay of the track circuit and a current value of a current flowing in the track circuit is larger than a preset first current value, determine that a train is present on a rail, and
- in a case where the relay information on the track circuit indicates deactivation of the relay and the current value is lower than or equal to the preset first current value, determine that there is a rail fracture.
2 more elements
A rail fracture detection device comprising:
- a receiver provided between two rails and including a relay of a track circuit;
- a transmitter that is provided between the two rails but is located after the receiver in a travelling direction of a train and that forms a current loop with the receiver and the two rails;
- and
- a determiner to determine presence or absence of a fracture in the two rails and presence or absence of a train on the rails on a basis of information from the receiver and information from the transmitter, wherein
- the receiver includes a receiver voltage measurer to measure a voltage applied to the relay,
- the transmitter includes
- a transmitter power source to generate the current,
- a transmitter resistor connected in series with the transmitter power source, and
- a transmitter current measurer to measure a current in the transmitter resistor, and
- the determiner determines that a train is present on the rails in a case where a voltage value measured by the receiver voltage measurer is lower than a preset threshold value and a current value measured by the transmitter current measurer is larger than a preset first current value, and
- the determiner determines that there is a rail fracture in a case where the voltage value measured by the receiver voltage measurer is lower than the preset threshold value and the current value measured by the transmitter current measurer is lower than or equal to the preset first current value.
8 more elements
Dependencies are inferred from the claim text.