Confidence storage method and system for key data of safety-critical equipment

Abstract

The invention discloses a confidence storage method and system for key data of safety-critical equipment, relates to the technical field of safety-critical systems, and aims to ensure the existence ofthe key data and ensure the security confidence without manual intervention after initial equipment encounters unexpected downtime or restart. The main technical scheme is as follows: after the safety critical system is powered on for the first time and initialization confirmation is completed, the initial equipment generates key data, and the key data at least comprises line occupation conditioninformation in a jurisdiction range corresponding to the initial equipment; according to a preset sending period, the initial equipment multicasts key data frame messages to the multiple target devices, and the key data frame messages are obtained by processing key data on the initial equipment according to a predefined key data frame message structure; and the target device receives the key dataframe message and writes the key data frame message into a specific storage area pre-defined by the target device. The method and the system are applied to confidence storage of key data of safety-critical equipment.

Description

technical field [0001] The invention relates to the technical field of safety-critical systems, in particular to a method and system for trusted storage of key data of safety-critical equipment. Background technique [0002] Safety-critical systems (Safety-critical systems) refer to systems whose failures often cause major losses of life, environment, property, etc., and their typical application fields include aviation, aerospace, military, railway signals, automotive electronics, nuclear power plants, petrochemicals, etc. and medical fields. The safety-critical system represented by the railway signal system is moving towards the trend of reducing the arrangement of equipment along the line in the direction of system evolution. The representative is the introduction of positioning technology including Beidou or GPS to realize the position positioning of the train. Correspondingly, secondary detection equipment is no longer or reduced, including track circuits or axle coun...

AI Technical Summary

Problems solved by technology

[0005] To sum up the application scenarios of safety-critical systems listed above, the current application scheme is carried out in the way of manual intervention. Due to manual intervention in the system, it is inevitable that there will be potential safety risks caused by personnel errors. At the same time, manual intervention is adopted. It will also affect the efficiency of the system

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