Control system full time domain hot standby method based on data synchronization
A control system and data synchronization technology, applied in the field of control, can solve the problems of device function failure, long switching time, and difficulty in implementation, and achieve the effects of simple implementation, easy maintenance, and flexible use.
Active Publication Date: 2021-08-31
NAVAL UNIV OF ENG PLA
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Problems solved by technology
[0005] There are problems: the switching criterion is incomplete, and the failure of the "heartbeat" signal between the master and the slave is not equivalent to the failure of the device function
[0008] Existing problems: technical design is complicated, implementation is difficult, switching takes a long time, and hot backup cannot be realized
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[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.
[0049] The invention provides a data synchronization-based full-time domain redundant hot backup method for a control system. The method adopts the technical scheme of "hardware configuration dual-machine, software switching master-slave", and includes two master-slave switching mechanisms of arbitration and voting.
[0050] Such as figure 1 As shown, a redundant control system constructed according to the guidance of the present invention is shown, which adopts the popular three-level control architecture in the current industrial system---top-level logic control, middle-level real-time control and bottom-level execution control. The top-level logic control is mainly realized by process control equipment A and process control equ...
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A control system full-time-domain hot standby method based on data synchronization, a control system comprises a control device A and a control device B which communicate with each other, the control device A and the control device B are connected with a plurality of interface devices in the same mode and communicate with the interface devices in an interactive mode, and the communication content is the same; the number of the interface devices is multiple; the system further comprises health monitoring equipment, the health monitoring equipment is used for receiving operation state information sent by the control device A, the control device B and the interface devices and setting master-slave states of the control device A and the control device B according to the operation state information, one control equipment is in a host state, and the other control equipment is in a slave state. And the interface devices only processes the data packets sent by the control device in the host state. The industrial reliability is effectively improved.
Description
technical field [0001] The invention belongs to the technical field of control, and in particular relates to a data synchronization-based full-time hot backup method for a control system. Background technique [0002] The coupling of information flow and energy flow in complex industrial systems is becoming increasingly tight. Once the control system fails, it will lead to task failure at least, and equipment damage or even casualties at worst. Therefore, it is necessary to improve the control reliability. Controller redundancy is a method with less cost, better comprehensive performance, and widely used at present. Through the master-slave configuration, the redundancy of the control system is realized. According to the different master-slave switching methods, this method can be divided into two categories: [0003] (1) Master-slave switching is completed through the "heartbeat" signal [0004] The main idea: the master-slave sends a "heartbeat" signal at a certain time...
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IPC IPC(8): G05B9/03
CPCG05B9/03
Inventor 郭威崔小鹏刘勇李鹏飞欧阳斌廖涛李传振熊又星于嘉维陈杨科
Owner NAVAL UNIV OF ENG PLA