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Train speed and range measurement system

A distance measurement system and train speed measurement technology, which is applied in the direction of railway signal and safety, can solve the problems of insufficient safety, lack of redundant data verification, etc., and achieve the effect of low difficulty in implementation, improvement of safety, and reduction of types

Active Publication Date: 2015-06-24
CHINA RAILWAYS CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, there has been research and application of satellite navigation technology for train positioning. For example, the ITCS train operation control system used on the Qinghai-Tibet Line, although a large number of laying of transponders has been avoided, the speed and distance measurement unit of ITCS is a combination of GPS and speed sensors. The positioning method lacks redundant data verification in the design, and the security is relatively insufficient

Method used

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Experimental program
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Effect test

Embodiment 1

[0033] figure 1 It is a schematic structural diagram of the train speed measurement and distance measurement system provided by Embodiment 1 of the present invention.

[0034] Such as figure 1 As shown, the train speed measurement and distance measurement system provided by the present invention includes a communication server 400, three data acquisition and processing channels 100, 200, and 300 of A, B, and C respectively connected to the communication server 400, and respectively connected to the communication server 400. The safety relay 600 connected to the three data acquisition and processing channels 100, 200, and 300 of 400, A, B, and C, and the three data acquisition and processing channels 100, 200, and 300 of the safety relay 600, A, B, and C respectively The output / input drives 500.

[0035] Further, the A, B, and C data acquisition and processing channels 100, 200, and 300 all include sequentially connected data input ports, data acquisition processors, and posi...

Embodiment 2

[0040] figure 2 It is a schematic diagram of data collection and processing of the data collection and processing channel 100 provided by Embodiment 2 of the present invention.

[0041] As a preferred mode of the above-mentioned embodiment, further, the data acquisition processors of the data acquisition and processing channels 100, 200, and 300 of the A, B, and C all include a microprocessor and a counting module connected to it, a microcycle synchronization module, a mode detection module. Wherein, the GNSS differential data signal input terminal is connected to the counting module; the mode detection module and the microcycle synchronization module are connected to the output / input driver; the microcycle synchronization module is connected to the communication server through Ethernet Connection: The signal input end of the speed sensor and the sensor signal input end of the inertial measurement unit are respectively connected to the microprocessors of the three data acqui...

Embodiment 3

[0045] image 3 It is a mode state transition diagram of the microprocessor of the data acquisition and processing channel of the present invention;

[0046] Figure 4 It is a microcycle synchronous schematic diagram of the power-on mode of the microprocessor of the data acquisition and processing channel of the present invention and the communication host;

[0047] Figure 6 It is a schematic diagram of the distribution of microcycles in the normal mode of the microprocessor of the data acquisition and processing channel of the present invention;

[0048] Figure 8 It is a schematic diagram of microcycle synchronization in normal mode between microprocessors of data acquisition and processing channels in the present invention.

[0049] Further, the microcycle synchronization module includes a power-on startup unit, a self-check unit, an initial synchronization unit, a normal synchronization unit, a data fusion unit, a synchronization comparison unit, a map matching unit, an...

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Abstract

The invention relates to the technical field of wireless navigation, and discloses a train speed and range measurement system which comprises a communicate server, a data collecting and processing channel A, a data collecting and processing channel B, a data collecting and processing channel C, safety relays and output / input drivers. The data collecting and processing channel A, the data collecting and processing channel B and the data collecting and processing channel C are connected with the communication server, the safety relays are connected with the data collecting and processing channel A, the data collecting and processing channel B and the data collecting and processing channel C respectively, and the output / input drivers are connected with the safety relays, data collecting and processing channel A, the data collecting and processing channel B and the data collecting and processing channel C respectively. The train speed and range measurement system overcomes the defect that safety is low due to the fact that assistance of a transponder and train locating carried out through a satellite navigation system are needed by a traditional train speed and range measurement system, and the train speed and range measurement system is high in safety.

Description

technical field [0001] The invention relates to the technical field of train operation control, in particular to a train speed measurement and distance measurement system. Background technique [0002] The train speed measurement and distance measurement system provides high-precision, high-reliability speed and distance parameters for the train operation control system. As a safety-critical key component, the train speed measuring and distance measuring system, the consequences of any errors in outputting speed and distance data are very serious. Existing train speed measurement and distance measurement systems use speed sensors or radars. The position of the train is obtained based on the speed integral, and there is a cumulative error. It is necessary to lay a large number of transponders on the ground to eliminate the positioning cumulative error. and sending device. [0003] In recent years, there has been research and application of satellite navigation technology fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L25/02B61L23/00
Inventor 王剑蔡伯根刘江上官伟王忠立靳成铭陶维杰
Owner CHINA RAILWAYS CORPORATION
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