Method and device for data isolation between security and conventional control applications
A conventional control and safety control technology, applied in the direction of comprehensive factory control, comprehensive factory control, program control, etc., can solve problems such as long cycle time, achieve the effect of ensuring integrity, solving synchronization real-time, and ensuring functional safety and integrity
Active Publication Date: 2021-05-11
ZHEJIANG SUPCON TECH
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The cycle to complete a round of redundant synchronization is long, generally multiple control cycles
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[0033] In order to further understand the present invention, the preferred embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only to further illustrate the features and advantages of the present invention, rather than limiting the claims of the present invention.
[0034] In order to facilitate the understanding of the present invention, some technical terms mentioned in the present invention are explained first.
[0035] Safety hybrid control system: refers to an industrial control system that includes both safety control applications and conventional control applications.
[0036]Channel: A term specific to system devices with multiple voting architectures, such as functional safety control systems. Channel is the basic processing unit of multiple voting system architecture. A channel generally contains a CPU, corresponding memory, and associated microelectronics. Each system chann...
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The invention discloses a method for data isolation between security and conventional control applications. The method comprises the following steps: S1, allocating an exchange data area for a security / conventional control task; and S2, based on the distributed exchange data area, performing data isolation exchange between security and conventional control applications; The invention further discloses a device for data isolation between the security control and conventional control applications. The device at least comprises two multi-channel architecture systems, and each channel comprises a security data area and a conventional data area which are isolated; and the conventional control task cannot rewrite the security data area and can only read and cannot rewrite the conventional exchange input area, and the security control task cannot directly access the conventional data area and can only read and cannot rewrite the security exchange input data area. The security data is effectively prevented from being influenced by data, tasks and programs of the conventional control application, the function security integrity of the security control application and the integrity of data exchange among tasks in multi-task operation are guaranteed, and the synchronous real-time performance of task data exchange among multiple channels is achieved.
Description
technical field [0001] The invention relates to the field of industrial process control, in particular to a method and device for data isolation between security and conventional control applications. Background technique [0002] In order to integrate the advantages of functional safety control systems and conventional process control systems, improve the flexibility of control system deployment and application expansion, reduce the production and use costs of control systems, etc., in industrial applications such as oil and gas transmission, small key system control, etc., it has become more and more popular. There is an increasing need to support both safety control functions and conventional control functions in the same control system. [0003] The safety control function requires high reliability and high availability, and it needs to be developed and implemented in accordance with the relevant standards of functional safety. In safety control applications, safety con...
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IPC IPC(8): G05B19/418
CPCG05B19/41885G05B2219/32339Y02P90/02
Inventor 裘坤平志明江竹轩毛钦晖朱燕萍
Owner ZHEJIANG SUPCON TECH