Receiver for 25HZ phase-sensitive track circuit

Abstract

The invention discloses a receiver for a 25 HZ phase-sensitive track circuit, and the receiver comprises a matching transformer which comprises a primary coil and a secondary coil. A primary coil of the matching transformer is connected with a relay transformer of the 25HZ phase-sensitive track circuit, and the matching transformer is used for carrying out impedance matching on the 25HZ phase-sensitive track circuit so as to convert an original voltage signal of the track circuit output by the relay transformer into a first voltage signal; the ratio of a primary coil to a secondary coil of the matching transformer is 1: 1; and two board cards, each of which is connected with the secondary coil of the matching transformer and is used for collecting the first voltage signal so as to obtain the state of the track. Redundant collection of track signals is achieved, the fault guiding safety side is met, and the reliability of the receiver is effectively improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to an electronic receiver for a 25HZ phase-sensitive rail circuit. Background technique [0002] 25HZ phase-sensitive track circuit is an important equipment in the field of railway track circuits. It is a circuit system that uses rails as conductors to transmit information to realize section vacancy and occupancy checks. As a key component of the 25HZ phase-sensitive track circuit, the receiver can collect rail signals, so as to realize the judgment of track status. [0003] The 25HZ phase-sensitive track circuit usually adopts a binary two-position receiver or a microelectronic receiver for signal acquisition. The binary two-position receiver can judge the state of the track through the pick-up and drop of the relay, but it cannot realize redundant acquisition due to the limitation of the equipment structure, and its volume is large and the space utilization rate is low; alt...

AI Technical Summary

Problems solved by technology

The binary two-position receiver can judge the state of the track through the pick-up and drop of the relay, but it cannot realize redundant acquisition due to the limitation of the equipment structure, and its volume is large and the space utilization rate is low; although the microelectronic receiver solves the problem of binary two-position The problem that bit relays cannot be redundantly collected, but when a single device fails and is replaced, the track status collected by another device will increase significantly, and redundant collection is not strictly implemented

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