| 摘要 |
A protection device for a train is disclosed. The protection device works in conjunction with a remote controlled braking system on the train. The remote controlled braking system includes a transmitter in the locomotive of the train and a receiver located elsewhere on the train, typically on the last car. In an emergency situation the transmitter sends to the receiver over an RF communication link a brake command. When the receiver senses the brake command, it implements it by applying the brakes of the train from the car in which the receiver is placed. When the protection device senses that the train is about to enter a forbidden area, such as failing to obey a stop signal, it sends a brake command over the RF communication link to cause the application of the brakes by the receiver unit.</PTEXT>
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