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Testing device for UM71 track circuit compensation capacitor

A technology for compensating capacitors and testing devices, which is applied in the field of UM71 track circuit safety, can solve the problems of reducing the signal transmission distance of track circuits, increasing the labor complexity of staff, and threats to train driving safety, etc., to achieve reduced labor complexity and good scalability performance, low power consumption

Inactive Publication Date: 2018-04-17
SINOPOL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is clumsy, time-consuming and labor-intensive, which increases the labor complexity of the staff, and because the capacitance is laid down, the transmission distance of the track circuit signal is reduced, which poses a threat to the safety of the train.

Method used

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  • Testing device for UM71 track circuit compensation capacitor
  • Testing device for UM71 track circuit compensation capacitor
  • Testing device for UM71 track circuit compensation capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The embodiments involved in the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, a UM71 track circuit compensation capacitance test device includes a key input unit, a control unit, a signal generation unit, a power amplification unit, a filter unit, a rectification unit, a display unit, a storage unit and a USB communication unit

[0033] The key input unit is connected to the input end of the control unit, and is used for setting and modifying test parameters. The test parameters include the test waveform frequency, amplitude and waveform selection of the signal generation unit and the amplification factor of the power amplification unit. Such as figure 2 As shown, the key input unit includes a keyboard scanning chip U1, a keyboard matrix, a crystal oscillator X1, capacitors C1~C3, and resistors R1~R7. The keyboard scanning chip is ZLG7289, and the keyboard matrix is ​​a 12...

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PUM

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Abstract

The invention provides a testing device for compensation capacitance of UM71 track circuit, which includes a key input unit, a control unit, a signal generation unit, a power amplification unit, a filter unit, a rectification unit, a display unit, a storage unit and a USB communication unit. In the present invention, by applying a test signal with a frequency higher than the frequency of its own transmission signal at both ends of the compensation capacitor, the voltage value fed back by the compensation capacitor is finally obtained, so as to determine the value of the compensation capacitor and perform online testing without laying down the capacitor, which is very convenient and fast. It reduces the labor complexity of the staff and improves the safety of train driving. It has a simple structure, low cost, small size, easy to carry, low power consumption, high detection accuracy, good stability and reliability, fast response speed, and good performance. Scalability, can be widely used in other online testing occasions.

Description

technical field [0001] The invention relates to the technical field of UM71 track circuit safety, in particular to a testing device for compensation capacitance of UM71 track circuit. Background technique [0002] UM71 track circuit is a frequency-shifting track circuit, and its normal working state is related to the safety of train operation. During the running of the train, in order to transmit signals, the UM71 track circuit connects a capacitor between the two rails every 100m, generally 33uF, called compensation capacitor. The compensation capacitor is an important part of the UM71 track circuit. Its function is to improve the transmission characteristics of the track circuit in the adjustment state and shunt state, extend the transmission distance of the track circuit, and ensure that there is enough stable signal current in the track to send information to the locomotive through the track. . However, due to the influence of temperature, humidity and human factors, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26
CPCG01R27/2605
Inventor 陈永桥
Owner SINOPOL ELECTRONICS TECH
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