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Realization method based on CPCI bus technology of dual module hot spare system switching

A dual-machine hot backup and system switching technology, applied in the field of rail transit, to achieve the effects of fast speed, simple hardware configuration, and improved reliability and availability

Active Publication Date: 2011-04-06
NANJING NRIET IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to develop a dual-machine mutual backup system in urgent need of development in the current subway system, and invent a method for realizing switching of a dual-machine hot backup system based on CPCI bus technology

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  • Realization method based on CPCI bus technology of dual module hot spare system switching
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  • Realization method based on CPCI bus technology of dual module hot spare system switching

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 1 As shown, the ATO system of the present invention is equipped with a set at the front and rear of the vehicle, and each set of equipment is composed of 2 ATO units with the same hardware.

[0028] Such as figure 2 As shown, each ATO is mainly composed of the following equipment:

[0029] CPU board: A CPCI single-board computer based on an Intel microprocessor is used to control the input and output of the ATO, calculate the speed curve and manage the received data, and provide an Ethernet interface.

[0030] Digital I / O board (two pieces, digital I / O board 1 and data I / O board 2): it is an 8-way input and 8-way output digital interface circuit board based on the PCI local bus.

[0031] Communication board: Each ATO controller needs 4 RS422 interfaces, which can be expanded through the CPCI bus.

[0032] ...

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Abstract

The invention relates to a realization method based on the CPCI bus technology of the dual module hot spare system switching. The realization method is characterized by comprising the following steps: 1) the cabs at the head and tail of a train are separately provided with an ATP and two ATOs, the ATP adopts 2-out-of-3 architecture, the same ATOs (ATO1, ATO2) are hot spares to each other; 2) when the train runs normally, only the ATPs and ATO of the front head cab in the advancing direction work, the tail cab is powered off; when the train enters a turning section, a driver in the head cab of the original advancing direction presses an AR button on the driving platform to power on the ATPs and ATO of the tail cab; the ATPs and ATO of the head cab and the ATPs and ATO of the tail cab exchange information, the driving privilege is exchanged according to the driving direction so that the original tail cab is reversed to become the head cab, the ATPs and ATO of the original head cab are powered off; and 3) the redundancy automatic switching of one ATO adopts the dual module hot spare mode. The system of the invention has simple hardware configuration, lower system cost and abundant interfaces and is convenient to test and debug.

Description

technical field [0001] The invention relates to a rail transit technology, in particular to a hot backup switching method for improving operation safety and reliability in rail traffic, in particular to a method for realizing switching of a dual-computer hot backup system based on CPCI bus technology. Background technique [0002] As we all know, the ATO system (automatic train driving) is an important part of the urban rail transit signal system, which is used to complete the automatic operation of the train and precise parking at the station. In the urban rail transit system, through the realization of the ATO system function, the purpose of improving driving efficiency, reducing system cost, and reducing the labor intensity of drivers can be achieved. It has played an important role in improving the efficient operation of urban rail transit. [0003] As a direct control device for the operation of subway vehicles, the dual-machine hot backup method not only ensures the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L27/04G06F11/16
Inventor 项小淳
Owner NANJING NRIET IND CORP
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