btm closed-loop library inspection system

A closed-loop, trackside technology, applied in the control system of the operation center, railway signal and safety, railway traffic management, etc., can solve the problems of BTM antenna radiation endangering the health of maintenance personnel, unworkable connection, and damage to the connection interface

Active Publication Date: 2021-09-03
BEIJING JIAODA SIGNAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current maintenance method has the following problems: 1. BTM antenna radiation is harmful to the health of maintenance personnel, and there is a danger of strong electricity; 2. It is necessary to disconnect the connection between the BTM host and the vehicle equipment, and then connect the B interface to the detection equipment for testing
In this way, there are great installation risks, including wrong cable connection, poor connection, and damage to the connection interface; 3. During the test, the main electrical equipment of the locomotive is turned off, which is very different from the actual operating environment of the locomotive; 4. Lack of complete testing of BTM antennas (energy, frequency); 5. Lack of testing of installation height of BTM antennas; 6. Lack of complete testing of uplink and downlink; Long-term record of test data, statistical analysis, fault warning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one locomotive number recognition

[0034] The locomotive number is similar to the ID number of the locomotive, and is the unique identification of the locomotive. Through the automatic identification of the locomotive number, the automatic test of the locomotive can be realized, and the test results can be automatically classified. It is also possible to test multiple locomotives in and out of the warehouse at the same time through the multi-strand track layout test equipment. This embodiment provides a method for realizing the automatic identification of the locomotive number, and its process is as follows:

[0035] 1) Detection of locomotives entering the detection area: during the locomotive travel process, the vehicle-mounted BTM antenna transmits transponder excitation signals in real time, and the trackside processing center detects the surrounding excitation signals in real time through the receiving unit. When the locomotive approaches the detectio...

Embodiment 2

[0039] Embodiment 2 BTM uplink and downlink test

[0040] The BTM downlink test refers to the test of the 27.095MHz radio frequency signal emitted by the BTM antenna, and the test content includes energy and frequency. The BTM uplink test refers to the test of the radio frequency signal with a center frequency of 4.23MHz transmitted by the transponder of the vehicle-mounted BTM equipment. The test content includes: message reception, decoding time, good bit rate, bit error rate, and decoding times. Only when the uplink and downlink of the vehicle-mounted BTM equipment are tested can the vehicle-mounted BTM equipment be considered as a complete test. The invention can realize the uplink test and downlink test of the locomotive under the condition of not changing the connection state of the equipment during the process of locomotive entering and exiting the warehouse. The present embodiment provides a kind of testing method of BTM uplink and downlink, and its process is as foll...

Embodiment 3

[0050] Embodiment 3 The Weakest Transponder Test

[0051] At present, when the electric service is testing the BTM, it adopts the method of shaking the transponder under the BTM antenna and then observing the BTM status indicator. During the test, the distance between the transponder and the BTM antenna will be continuously adjusted. Only when the distance exceeds a certain distance (standards of each train station are different) and the on-board BTM equipment can be decoded normally, the BTM equipment will be deemed to have passed the test and the locomotive will be allowed to leave the warehouse. .

[0052] The current method used on site has the following problems: two people are required to cooperate with the test, one is shaking the transponder under the vehicle, and the other is looking at the lights on the vehicle; BTM antenna radiation endangers the health of maintenance personnel; a ruler is used to measure the distance between the BTM antenna and the transponder Ina...

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Abstract

The BTM closed-loop library inspection system of the present invention comprises a vehicle-mounted recorder platform, a trackside processing center, a receiving unit, a locomotive identification unit, an adjustable transmitting unit, a BTM detection server and a data terminal; All the operation information of the on-board BTM equipment; the trackside processing center realizes the communication with the BTM detection server, and sends the measured data to the BTM detection server, and the BTM detection server will analyze and judge the data; the adjustable transmitting unit and the track The trackside processing center is connected, and the trackside processing center transmits the modulated FSK signal or message through the adjustable transmitting unit. The technical effect of the invention: it can realize the test of the uplink and downlink of the BTM equipment, carry out long-term analysis and statistics on the state of the BTM equipment, and give early warning information. This test is automatically completed when the locomotive is in and out of the warehouse, and will not affect the operation of the locomotive.

Description

technical field [0001] The invention relates to the application field of railway signal equipment detection, in particular to a system for quickly and automatically realizing the function and performance test of BTM equipment when locomotives and vehicles enter and leave the warehouse. Background technique [0002] With the development of railway transportation, equipment failure has become a bottleneck affecting the development of railway transportation. Equipment failure not only greatly affects the traffic plan, reduces the transportation efficiency of the railway, but also greatly affects the traffic safety. The transponder message transmission module (BTM) is one of the key equipment of the on-board equipment of the EMU. It is composed of the on-board BTM host and the BTM antenna. It is mainly responsible for decoding the encoded message data in the transponder memory and transmitting it to the The VC (vehicle safety computer) unit in the control system ATP provides ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L27/00
Inventor 刘星宇牟海涛王永和昝永信
Owner BEIJING JIAODA SIGNAL TECH
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