Apparatus for transferring blast pressure alarming information on train tail

The utility model relates to a train tail safe guarding device, comprising a pneumatic pressure detecting unit for detecting the information of blast pressure variation in the train tail, a control unit for framing the information of pressure variation, a fast frequency excursion key-drive encoding unit for encoding the data frame quickly and a vehicle general station for transmitting the code information to the locomotive arrangement. The utility model adopts strong transmit capacity of wireless transmission of the fast frequency excursion key-drive encoding at 800 MHz to solve the problem of the cover range of the weak field strength to make sure the maximal limitation of normal data transmission between the head and the rear of the train. Thereby, the utility model can be used at the complex line and sectors of bad wireless transmission conditions, which extends the application range of the warning facility of train tail safe guarding device.