Method of operation of the onboard train protection device and the vehicle part of the train protection device

摘要

BACKGROUND OF THE INVENTION The invention relates to a method of operating a vehicle part of a train protection system, wherein a signal with information encoded by the modulation is sensed from the track part by a train sensing device, then the sensed signal is processed and evaluated by the vehicle part of the train protection to determine the transmitted information. From the signal sensed by the vehicle part of the train protection system, the side bands are divided into a separate branch (1, 2), then the respective side band in the respective branch (1, 2) is separately analyzed and decoded to determine the transmitted information in each of the branches (1, 2) , the information specified in each branch (1, 2) is compared with each other and the result of the train protection decision is determined. The invention also relates to a vehicle part of a train protection system comprising means for sensing modulation of the encoded signal from track circuits by inductive coupling and further comprising means for processing and analyzing the signal and decoding it to determine the transmitted information. The means for processing and analyzing the sensed signal and decoding it comprises means (10, 20) for dividing each of the sidebands of the sensed signal into a separate branch (1, 2), wherein in each branch (1, 2) there are means (10, 20) ) for dividing each of the side bands into a separate branch (1, 2) arranged means (11, 21) for determining the original transmitted information from each side band of the sensed signal, behind which the two branches (1, 2) are guided to the comparison means (3 ) to determine the resulting information originally transmitted for decision-making within the train protection system.