Master-salve equipment switch control method

A control method and equipment technology, applied in the direction of digital transmission system, electrical components, error prevention, etc., can solve the problems of wrong switching, no research and mention of communication between the control device and the controlled device, and no consideration of normal communication, etc. Achieve the effect of avoiding false switching and perfecting the redundant switching control mechanism
CN101119187BInactive Publication Date: 2010-05-19ASAT CHINA TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ASAT CHINA TECH
Publication Date
2010-05-19
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The present invention relates to a controlling method for the switch between a principal device and a subordinate device in a redundant system, which at least comprises a principal server object, a client object, a standby server object, a principal working channel connected between the principal server object and the client object and a standby working channel connected between the standby serverobject and the client object. The principal server object is connected with the standby server object through a monitoring communication connecting manner. The present invention is characterized in that: when the principal and standby server communicates normally, the principal server object transmits initiatively an switching control order to start the switch between the principal device and subordinate device according to the fault signal of principal working channel running state; when the principal server object and the standby server object communicates unsuccessfully, the standby working channel starts the switch between the principal device and subordinate device according to the fault signal of monitoring principal working channel running state. Compared with the prior art, when the judgment that whether to switch the principal and subordinate device is made, the present invention not only considers the running states of both the principal server object and the principal working channel but also provides a method for judging the self running state of the principal server object and the running state of the principal working channel. Compared with the prior art, the presentinvention is a redundancy switching controlling mechanism which is safer and more perfect.
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Description

technical field

[0001] The invention relates to a switching control method for working between devices, in particular to a switching control method for master-slave devices in a redundant system. Background technique

[0002] In the field of industrial automation, in order to improve the reliability of the system, the functional components that play a key role in the continuous operation of the system are generally redundantly configured, and the spare components of the redundant configuration will adopt the same configuration as the main operating components to reduce risks. , increasing the reliability of the system. The function of the redundant configuration is to take over the internal information by using the backup parts and use the backup system as a new operation system when the main operation part fails or needs to be replaced or the internal operation system of the main operation part needs to be updated and upgraded. , allowing the system to continue running wit...

Claims

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