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Device and method for realizing ASC

A technology of active/standby switching and working unit, applied in the field of communication, can solve the problems of complexity, low reliability, high cost, etc., and achieve the effect of flexible upgrade, improved reliability, and easy automatic switching.

Active Publication Date: 2008-04-16
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the disadvantages of complexity, high cost and low reliability in the prior art, the present invention is based on a distributed structure. In a system composed of multiple communicating units, no matter what communication data and control bus are Communication mode and protocol type, such as: ETHERNET, HDLC, etc., by changing the identification address of the active and standby working units to realize the active-standby switchover of the core working unit

Method used

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  • Device and method for realizing ASC
  • Device and method for realizing ASC

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Embodiment Construction

[0031] The implementation of the technical solution will be described in detail below in conjunction with the accompanying drawings.

[0032] figure 1 Example shown

[0033] to combine figure 1 Embodiment Describe the structural composition of the device of the present invention.

[0034] Each working unit A1 , A2 , . . . , AN respectively includes: CPUm, ICm, Cm (m takes a value of 1-N). The CPU system realizes data synchronization with other working units with the same function and communication with other working units through the communication interface control unit through the data line. The CPU system also utilizes the programmable logic unit to realize the detection and control of other working units with the same function. The data bus here may be data lines in various forms such as HDLC bus or ETHERNET bus, or a combination of these data lines.

[0035] The steps of this embodiment are as follows:

[0036] Process 1: detection and switching process

[0037] Ste...

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Abstract

The invention discloses a device and method to realize switch the main and backup units, which comprises: one main work unit composed of a CPU, a PLD, a communication interface control unit, a data bus, and a control bus; and at least one backup work unit; wherein, labeling individual main and backup state to control software running, using data bus for periodic synchronous data. This invention can improve system reliability greatly, makes main and backup units relative independent, and convenient to auto switch and reply and other application.

Description

technical field [0001] The present invention belongs to the category of communication technology, and in particular relates to various communication devices that need to realize communication and control, in which the core working unit needs to have the function of master-standby switching. Background technique [0002] In all kinds of communication equipment with communication and control, distributed systems of various buses are often used. Considering the reliability of the equipment, etc., it is often required that the important core control unit has the function of active / standby switching, usually There are two identical control work units in this distributed system, one of which is the main work unit, and the other will be in a backup state, that is, the backup unit is in a power-on waiting state. Once the protected main work unit appears In case of failure, the backup unit can automatically enter the working state to replace the function of the failed main working un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/74G06F11/00
Inventor 李永武成宾
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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