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A phase-sensitive track circuit intelligent receiver and signal processing method

A phase-sensitive track circuit and track signal technology, which is applied in the field of phase-sensitive track circuit intelligent receivers and signal processing, can solve problems such as bad shunting, affecting railway operation efficiency, derailment of track circuit shunting trains, etc., and achieves the convenience of use Effect

Active Publication Date: 2017-06-27
CHINA RAILWAY COMM & SIGNAL SURVEY & DESIGN BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these renovation measures alleviated the "red light band" phenomenon to a certain extent, they caused a serious mismatch between the characteristic impedance of the track circuit and the load impedance on the other hand, and the residual voltage of the shunt circuit of the track circuit became higher. Poor road phenomenon, that is, the receiving equipment cannot detect the occupancy information of the track circuit by the train
Poor track circuit shunting is likely to cause safety accidents such as train derailment and rear-end collision, and affect the efficiency of railway operation
In addition, with the continuous increase of railway operating mileage, the maintenance work of track circuit equipment is becoming increasingly heavy

Method used

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  • A phase-sensitive track circuit intelligent receiver and signal processing method
  • A phase-sensitive track circuit intelligent receiver and signal processing method
  • A phase-sensitive track circuit intelligent receiver and signal processing method

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Embodiment 1

[0028] Embodiment 1. A phase-sensitive track circuit smart receiver, which will be combined below figure 1 A detailed description of a phase-sensitive track circuit smart receiver provided in this embodiment will be given.

[0029] Such as figure 1 , 2 , 3, a phase-sensitive track circuit smart receiver, including a signal input unit 1, an anti-aliasing filter unit 2, a digital signal processing unit 3, a dynamic security AND gate 4 and a modular switching power supply 5. The signal input unit 1. The anti-aliasing filter unit 2, the signal processing unit and the dynamic safety AND gate 4 are connected in sequence.

[0030] Wherein, the signal input unit 1 is used to receive the track signal and perform lightning protection, isolation and matching processing to generate the first track signal, and is also used to receive the local signal and perform photoelectric isolation and attenuation processing to generate the first local signal; The anti-aliasing filtering unit 2 is configure...

Embodiment 2

[0044] Embodiment 2. A signal processing method, which will be combined below Figure 4 The signal processing method provided in this embodiment is described in detail.

[0045] Such as Figure 4 As shown, a flow chart of a signal processing method includes:

[0046] Step 1: Receive the track signal and perform lightning protection, isolation and matching processing to generate the first track signal;

[0047] Step 2: Perform anti-aliasing filtering processing on the first track signal to generate a second track signal and a third track signal;

[0048] Step 3: Receive the local signal and perform photoelectric isolation and attenuation processing to generate the first local signal;

[0049] Step 4: Perform anti-aliasing filtering processing on the first local signal to generate a second local signal;

[0050] Step 5: Perform digital signal processing on the second track signal and the second local signal to generate two control pulse signals;

[0051] Step 6: Convert the two control pu...

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Abstract

The invention relates to a phase-sensitive track circuit intelligent receiver and a signal processing method, comprising a signal input unit, an anti-aliasing filter unit, a digital signal processing unit, a dynamic safety AND gate and a module switching power supply, the signal input unit, the anti-aliasing filter unit The overlapping filtering unit, the signal processing unit and the dynamic safety AND gate are connected in sequence. A phase-sensitive track circuit intelligent receiver and signal processing method of the present invention, on the premise of fully realizing the functions of binary two-position relays and microelectronic phase-sensitive track circuit receivers, the "mutation" function is added to solve the problem of bad shunting ; and monitor the track circuit status, receiving equipment status, track signal, local signal, electrification interference signal and code interference signal, which is convenient for on-site maintenance personnel to use.

Description

Technical field [0001] The invention relates to the technical field of rail transit, in particular to a phase-sensitive track circuit intelligent receiver and a signal processing method. Background technique [0002] The 25Hz phase-sensitive track circuit is based on the Ministry of Railways (78) Tiejizi No. 1422 document imitating the Soviet Union. Since going on the roads in Shijiazhuang III and IV in 1980, the work has been stable and reliable and has been widely used throughout the road. Due to the proper selection of equipment parameters, the 25Hz phase-sensitive track circuit can be reliably adjusted, shunted and inspected for broken rails within the range allowed by technical conditions. The receiver is a 25Hz phase-sensitive track circuit receiving device, responsible for the adjustment of the track circuit and monitoring of the two states of the branch. Its early receiving device uses a binary two-position relay, and it is found that there are contact jams in the long-t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L1/18
Inventor 刘伟宁陈习莲翟永林陈琪晟王建国董玉玺裘韧耿燕
Owner CHINA RAILWAY COMM & SIGNAL SURVEY & DESIGN BEIJING
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