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Double mainframe backup control method

A control method and dual-machine hot standby technology, applied in general control systems, control/regulation systems, instruments, etc., can solve problems such as unfavorable system safe operation, dual-machine master-standby repeated switching, etc., so as to avoid competition for the host and avoid Reversal behavior, logically simple effect

Active Publication Date: 2009-06-17
CASCO SIGNAL
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AI Technical Summary

Problems solved by technology

[0002] At present, in the general method of dual-machine hot standby control, in the case of the same health score, it is necessary to judge the status of the active and standby machines of both parties to avoid dual-host or dual-standby machines, which will easily lead to Repeated switchover of dual-machine master and backup is not conducive to safe operation of the system

Method used

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  • Double mainframe backup control method

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Embodiment 1

[0018] A control method for dual-machine hot standby, comprising the following steps:

[0019] (1) Each machine scores itself to obtain a total score, which is scored according to the health score of the machine, the status of the main and standby machines, and the machine priority (A, B). Among them, the health of the machine is the highest, and the main and standby machines The state is the second lowest bit, and the machine priority is the lowest bit;

[0020]

[0021] (2) Each machine records two total scores, one is the total score my_status of the local machine, and the other is the total score partner_status of the companion machine sent by the companion machine last time;

[0022] (3) The two machines communicate regularly, use a complete data packet during communication, and send my_status and partner_tatus to the companion machine at the same time;

[0023] (4) After the local machine receives the score information my_status1 and partner_status1 of the partner ma...

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Abstract

The invention relates to a method for controlling hot-standby which includes: primary and secondary machines process self-detection for a local machine and collect parameter respectively; primary and secondary machines record two primary and secondary machines parameter respectively; primary and secondary machines communicate timing; when the local machine receives data package information of an accompanying machine, if primary and secondary machines parameter I of the local machine is equal with the primary and secondary machines parameter I of the accompanying machine, two machines are considered that primary and secondary machines parameter information of two machines are in agreement; if primary and secondary machines parameter of the local machine is more than primary and secondary machine parameter of the accompanying machine, the local machine is set as a primary machine. Compared with the prior art, the method provided by the invention has advantages that: unified scoring can determine primary and secondary machines directly according with total scoring result which has more simple logic and can avoid unnecessary rearranged machine action; pre-setting AB machine can prevent total scoring of double machines from sameness, avoid fighting for the primary machine, or difficult to determine the primary machine without third party.

Description

technical field [0001] The invention relates to a control method for dual-machine hot backup in a railway system, in particular to a control method for dual-machine hot backup. Background technique [0002] At present, in the general method of dual-machine hot standby control, in the case of the same health score, it is necessary to judge the status of the active and standby machines of both parties to avoid dual-host or dual-standby machines, which will easily lead to Repeated switchover between active and standby systems is not conducive to the safe operation of the system. Contents of the invention [0003] The object of the present invention is to provide a low-cost dual-machine hot backup control method in order to overcome the above-mentioned defects in the prior art. [0004] The object of the present invention can be achieved through the following technical solutions: a control method for dual-machine hot standby, characterized in that the method comprises: [00...

Claims

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Application Information

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IPC IPC(8): G05B9/03B61L23/00
Inventor 许诚鲍磊明
Owner CASCO SIGNAL
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