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Train lcu control system based on two times two out of two

A control system and train technology, applied in the field of computer communication, can solve the problems of redundant processing of control signals that cannot be cascaded, system stability and reliability, and high precision requirements of clock circuits, so as to improve power supply stability and ensure safety The effect of stable operation and continuous communication data

Active Publication Date: 2021-04-13
CHENGDU YUNDA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the prior art, the dynamic redundancy system of train control still has the following problems: (1) It is impossible to perform redundant processing on the cascaded control signals of other trains, and there is a bottleneck in system reliability
(2) The system relies on the clock circuit of each board control unit to achieve synchronization. This hardware solution requires high precision of the clock circuit, otherwise clock errors are prone to occur, which will directly affect the stability and reliability of the entire system
(3) In the existing dual-bus redundant communication system, when the dual-bus communication is switched, the communication data may be discontinuous or the communication data may be repeated

Method used

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  • Train lcu control system based on two times two out of two
  • Train lcu control system based on two times two out of two
  • Train lcu control system based on two times two out of two

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162] Embodiment one, such as Figure 16 Shown:

[0163] After receiving the message from the board, the receiver performs the following logic judgment:

[0164] S01: Determine whether the maximum time stamp Cmax of the redundant message is greater than the minimum time stamp Cmin of the redundant message, if so, go to step S02, otherwise, go to step S03;

[0165] S02: Determine whether the message timestamp is greater than Cmin and less than or equal to Cmax, if so, judge it as a redundant message, if otherwise, judge it as a new message, and update the maximum time stamp of the redundant message and the minimum time stamp of the redundant message;

[0166] S03: Determine whether the time stamp of the message is greater than Cmin or less than or equal to Cmax, if so, it is judged as a redundant message, if not, it is judged as a new message, and the maximum time stamp of the redundant message and the minimum time stamp of the redundant message are updated.

[0167] Among t...

Embodiment 2

[0169] Embodiment two, such as Figure 17 Shown:

[0170] After receiving the message from the communication terminal, the receiver performs the following logic judgment:

[0171] SS1: Determine whether the maximum time stamp Cmax of the redundant message is greater than the minimum time stamp Cmin of the redundant message, if so, go to step SS2, otherwise, go to step SS6;

[0172] SS2: Determine whether the message timestamp is greater than Cmin and less than or equal to Cmax, if so, jump to step SS3, if not, determine that it is a new message, and update the maximum time stamp of the redundant message and the minimum time stamp of the redundant message;

[0173] SS3: Determine whether the current message comes from the first CAN bus CAN0, if so, jump to step SS4; otherwise, jump to step SS5;

[0174] SS4: Continue to judge whether the source flag of the previous message is the second CAN bus CAN1, if so, judge it as a new message, and update the maximum time stamp of the r...

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Abstract

The invention discloses a train LCU control system based on two-by-two-out-two, which includes a first main control board, a second main control board, several VIO board groups, several DIO board groups and communication boards, the first main control board, The second main control board, the communication board, and each VIO board are equipped with two control units, and the two control units of each board are connected through the on-board communication bus. Inter-communication bus communication connection. The invention can realize the redundant processing of the data collected by each IO board and the cascade control command of the communication board, improves the reliability of the output control command and the execution of the cascade control command, and ensures the safe and stable operation of the train. The dual power supply boards supply power for each group of boards independently, while the dual power supply boards provide redundant power supply for the communication board and the storage board, which improves the stability of the system power supply.

Description

technical field [0001] The invention relates to the technical field of computer communication, in particular to a train LCU control system based on two by two. Background technique [0002] At present, with the continuous acceleration of urbanization, the urban population is gradually increasing, and the road traffic pressure is gradually increasing. The emergence of urban rail transit such as subways has effectively relieved the pressure on urban traffic and improved the convenience of people's travel. The signal system is an important part of the urban rail transit system. During the operation, if there is a failure, it will have a greater impact on the safety of passengers. [0003] Rail vehicles such as subways and trains generally have multiple carriages, so in the control system of rail transit, it is necessary to control multiple carriages. In the prior art, the relay mainly controls the control circuit by closing and disconnecting the contacts. Due to the electrica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L15/00H04L1/00H04L1/22
CPCB61L15/0018B61L15/0036B61L15/0063H04L1/0061H04L1/22
Inventor 王世权吕正银李夫忠邱照阳陈茂森夏飞远李欣冯维波
Owner CHENGDU YUNDA TECH CO LTD
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