Method for preventing industrial automation system from snowslip

Abstract

The invention relates to a method of the avalanche-proof of an industrial automation system. The industrial automation system comprises a storage unit used for storing time steam data unit to be processed and a CPU processing the time steam data inside the storage unit. The invention comprises the following steps: first, the establishment of data task priority; second, the CPU data task scheduling; third, the use approach of the storage unit. Under the fixed CPU processing ability, the invention sets the priority rank to the time stream data to be processed. The CPU preferentially processes the data task to be processed with the highest priority rank, and then processes the data task to be processed with lower priority rank. The storage units also set the corresponding sub-storage units with different priority ranks according to the priority rank of the data task to be processed. The data to be processed with the highest priority rank is able to store or cover the data to be processed with lower priority rank, thereby effectively ensuring that the automation system processes the task with the unpredicted quantity under the fixed CPU processing ability without causing the deadlock of the system.

Description

technical field [0001] The invention relates to a method for preventing an avalanche of an industrial automation system. Background technique [0002] With the wide application of automation systems in the industrial field and the increasing scale of automation systems, higher requirements are placed on the processing capabilities of the core processing equipment of automation systems, such as integrated automation systems for large enterprises, national railway automatic dispatching systems, and national power grids. Automatic dispatching system, air traffic control system, urban traffic control system, automatic command system, national economic management system, etc., the safety and stability of the automation system have become crucial and highly concerned in the whole production, management and life. question. [0003] At present, the automation system generally adopts a multi-process and multi-task scheduling mechanism. Each process (task) has an independent storage ...

AI Technical Summary

Problems solved by technology

[0005] The advantage of the multi-process and multi-task scheduling mechanism is that it can handle the main tasks of automation, non-main tasks and other irrelevant tasks at the same time, but because multiple tasks are carried out at the same time, the task scheduling mechanism does not distinguish priorities, so the result of processing is easy to delay important task

Although some systems have improved in terms of process processing and priority scheduling, when there are many high-priority tasks and resources are exhausted, the system will still appear suspended animation or crash phenomenon.

The problem of watchdog failure still cannot be effectively solved

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