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Scheduling method and device for industrial controller

A technology of industrial controllers and dispatching methods, which is applied in the directions of comprehensive factory control, comprehensive factory control, control/regulation system, etc., and can solve problems such as inability to defend against common mode attacks

Active Publication Date: 2021-04-23
中国航空油料集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An embodiment of the present invention provides a scheduling method and device for an industrial controller to solve the problem of inability to defend against common mode attacks in the prior art

Method used

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  • Scheduling method and device for industrial controller
  • Scheduling method and device for industrial controller
  • Scheduling method and device for industrial controller

Examples

Experimental program
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Effect test

example 1

[0140] Example 1, take A and B encountering a common mode attack as an example:

[0141] Use the random function to select 3 executive bodies A, B, and C from the 4 executive bodies A, B, C, and D for monitoring, and record the number of monitoring. Obtain the current output data of A, B, and C respectively, where the current output data of A and B are equal, and the current output data of C is not equal to both A and B. At this time, call C as an abnormal execution body and perform cleaning operation; at the same time, judge whether the execution body D to be worked is a normal execution body that completed the cleaning operation in the last scheduling process, and D is not in the last scheduling process In the normal execution body that completes the cleaning operation, D is transferred to the working state.

[0142] Re-monitor whether the current output data of A, B, and D are equal, but the current output data of D is not equal to that of A and B. Therefore, D is called o...

example 2

[0144] Example 2, take A, B, and C encountering a common mode attack at the same time as an example:

[0145]If the current output data of A, B, and C are always equal, it cannot be ruled out that A, B, and C have encountered a common mode attack. The output data of the three are the same, but they are already erroneous data. Therefore, when the number of monitoring times does not reach the preset When the value is 60, continue to monitor whether there is an abnormal execution body in the working execution body, but when the number of monitoring reaches the preset value of 60, randomly select C as the abnormal execution body in the working execution body to call out the working state, and make the monitoring Reset to zero and record again. Put D into the working state, if D is a normal execution body, then the output data of D must be different from A and B. Therefore, D is transferred out of the working state for cleaning, and C is transferred into the working state.

[014...

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Abstract

The embodiment of the invention discloses a scheduling method and device for an industrial controller. The scheduling method comprises the following steps: firstly, monitoring whether an abnormal execution body exists in working execution bodies or not; then, calling out a working state of the abnormal executive body, and carrying out cleaning operation; and finally, judging and scheduling other executive bodies in work by utilizing the cleaned normal executive body so as to convert the common-mode attack into the differential-mode attack until the differential-mode attack is completely removed, so that all the executive bodies in work are normal executive bodies. Besides, in order to prevent the executing bodies in work from suffering from common-mode attacks at the same time, a mode of recording the monitoring times is adopted, if the monitoring times reach a preset value and no abnormal executing body still exists in the executing bodies in work, one executing body in work is randomly selected to be assumed as an abnormal executing body, the working state is called out, and cleaning operation is carried out; and the cleaned normal execution body is used for judging and scheduling other execution bodies in work, so that common-mode attacks for all the execution bodies are effectively defended.

Description

technical field [0001] The invention relates to the technical field of industrial control, in particular to a scheduling method and device for an industrial controller. Background technique [0002] The industrial control system is an automatic control system that combines computer equipment and process control equipment. Among them, the industrial controller is an important part of the industrial control system. The industrial controller can be composed of an FPGA (Field Programmable Gate Array, programmable gate array chip) and multiple executive bodies, where the executive body can be an MCU (Microcontroller Unit, single-chip microcomputer), and the MCU is uniformly scheduled by the FPGA. The FPGA collects industrial field data and distributes it to each MCU. The MCU performs calculations and processing according to the field data, and sends the output data generated after calculation to the FPGA, which is then transmitted to the industrial field equipment to form a close...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCG05B19/41865G05B2219/32252Y02P90/02
Inventor 周文董贵山王纵驰程鹏刘波赖军杨汶佼张汝云
Owner 中国航空油料集团有限公司