SU929486A1

SU929486A1 - A.c. track circuit

Info

Publication number: SU929486A1
Application number: SU782667671A
Authority: SU
Inventors: Виктор Михайлович Лисенков; Виктор Степанович Аркатов; Анатолий Анатольевич Сахнин; Владимир Иванович Сироткин
Original assignee: Главное Управление Сигнализации И Связи Министерства Путей Сообщения Ссср
Priority date: 1978-09-28
Filing date: 1978-09-28
Publication date: 1982-05-23

Description

(54) РЕЛЬСОВАЯ ЦЕПЬ ПЕРЕМЕННОГО ТОКА(54) AC CHAIN RELAY

1one

Изобретение относитс к элементам систем автоматической блокировки и автоматической локомотивной сигнализации и предназначено , в частности, дл индикации зан тости отдельных блок-участков пути.The invention relates to elements of the automatic blocking system and automatic locomotive signaling and is intended, in particular, to indicate the occupation of individual block sections of the track.

Известна рельсова цепь переменного тока , содержаща генераторы, один из которых через амплитудный манипул тор, к которому подключен блок кодировани , соединенный с источником информационных сигналов , и блок согласовани подключен к рельсам на одном конце рельсовой цепи, а другой генератор соединен с одним входом приемника сигнала, другой вход которого через блок согласовани подключен к рельсам на другом конце рельсовой цепи, а выход св зан с блоком контрол состо ни рельсовой цепи 1.The known AC rail circuit contains generators, one of which is via an amplitude manipulator, to which a coding unit connected to an information source is connected, and a matching unit is connected to the rails at one end of the rail circuit, and the other generator is connected to one input of a signal receiver The other input is connected via a matching unit to the rails at the other end of the track circuit, and the output is connected to the track condition state monitoring unit 1.

Известна рельсова цепь имеет недостаточно высокую помехозащищенность, что снижает надежность ее работы.Known rail circuit has a sufficiently high noise immunity, which reduces the reliability of its work.

Цель изобретени - повышение надежности .The purpose of the invention is to increase reliability.

Цель достигаетс тем, что рельсова цепь снабжена соединенным с источником информации дополнительным блоком кодировани The goal is achieved by the fact that the rail circuit is provided with an additional coding unit connected to the source of information.

И включенным между приемником сигнала и блоком контрол состо ни рельсовой цепи блоком соответстви кодовых комбинаций , к которому подключен дополнительный блок кодировани .And a code pattern matching unit connected between the signal receiver and the track circuit condition monitoring unit to which the additional coding unit is connected.

На чертеже представлена функциональна схема рельсовой цепи.The drawing shows the functional circuit of the track circuit.

Claims

The rail circuit contains generators 1 and 2, the output of the first of which is connected to one input of amplitude manipulator 3, the other input of which is connected to coding unit 4, which converts information coming from information source 5, into code combinations. The output of the manipulator 3 is connected to the input of the matching unit 6. The relay end of the rail line 7 is connected to the input of the matching unit 8. Blocks 6 and 8 include traveling transformers, current limiters, circuit breakers, filters, and phase shifters. The output of the matching unit 8 is connected to the line input of the signal receiver 9, the local input of which is connected to the generator output

2. The receiver 9 of the signals performs the functions of a coherent receiver with the full coincidence of the signals at its inputs. The output of the receiver 9 of the signals is connected with the rail circuit condition monitoring unit 10. An additional coding unit 11 is connected to the information source 5, and a code combination matching unit 12 is connected between the receiver 9 and the unit 10. Rail circuit operates as follows. When signals from the rail line enter the receiver 9, which coincide according to the law of manipulation with the signals of the additional coding block 11, which is determined in block 12, which is a correspondence scheme, the output of block 12 will show a signal indicating the free state track circuit. In the event of interference signals from an adjacent rail circuit or when signals from other rail circuits hit the given rail circuit, for example, along a common winding different from the signal of this rail circuit, the signal disappears at the output of block 12. The invention makes it possible to increase the reliability of the operation of track circuits and, thereby, to improve traffic safety. Claims of the AC rail circuit comprising generators, one of which is through an amplitude manipulator, to which a coding unit is connected, connected to a source of information signals, and a matching unit is connected to the rails at one end of the rail circuit, and the other generator is connected to one receiver input a signal whose other input is connected via a matching unit to the rails at the other end of the track circuit, and the output is connected with the track circuit state control unit, characterized in that, in order to increase and reliability, it is provided connected to a source of additional information coding unit and connected between the signal receiver and the control unit of the track circuit state block corresponding to a codeword is connected to a further block coding. Sources of information taken into account during the examination 1. Talykrv A.A. et al. Phase-sensitive rail circuits 25 Hz, - M., “Transport, 1972, p. 65.