Railway vehicle derailment detection system
AssigneeM.L. Engineering (Plymouth) Limited
InventorsGeoffrey D. Miller, Ernest J. Moorey
Life of this patent
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Abstract
In order to detect derailment of a railway vehicle each vehicle in a train is provided with an acceleration responsive device which, in response to the vehicle acceleration resulting from derailment of the vehicle transmits a short range radio signal to a receiver installed in the engine to provide a visual or audio alarm. In one practical arrangement requiring no routine maintenance each transmitter unit has a resonant circuit which is energized as a result of the stressing of a piezo-electric crystal upon vehicle derailment, avoiding the need for any separate electrical power source on the vehicle.
Claims10
A railway vehicle derailment detection system comprising a radio transmitter mounted on a railway vehicle in a train, the transmitter including means responsive to the vertical acceleration resulting from derailment of the vehicle to cause the transmitter to transmit a radio signal, and a receiver adapted to be mounted at a control location on the train, said receiver including alarm means responsive to the reception of said radio signal to provide a warning of derailment of the vehicle on which the transmitter is mounted.
Dependencies are inferred from the claim text.