Primary-standby fault-tolerant storage architecture for onboard computers

By employing a primary-backup fault-tolerant storage architecture and a fault-tolerant management module, the single-event flip problem of storage media in spaceborne computers has been solved, achieving high data reliability and autonomous recovery capabilities, making it suitable for resource-constrained spaceborne missions.

CN122309247APending Publication Date: 2026-06-30BEIJING ZHONGKE TIANSUAN TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING ZHONGKE TIANSUAN TECHNOLOGY CO LTD
Filing Date
2026-04-02
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technical solutions cannot effectively protect against data corruption caused by single-event and multi-bit flips in storage media in spaceborne computers. Furthermore, existing redundancy solutions are costly and resource-intensive, failing to meet the requirements of lightweight design and high efficiency.

Method used

It adopts a primary-backup fault-tolerant storage architecture, including a primary boot partition, a primary system root partition, a backup partition, and a data partition. Combined with a fault tolerance management module, it performs fault identification, repair, and maintenance. A three-out-of-two voting device is used to achieve data repair and wear leveling, avoid unnecessary write operations, and ensure data integrity and system recovery capabilities.

Benefits of technology

It achieves high data reliability and autonomous recovery capability under extreme radiation environments, reduces wear and tear on storage media, improves system processing performance and resource utilization efficiency, and is suitable for resource-constrained microsatellites.

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Abstract

This application discloses a primary-backup fault-tolerant storage architecture for spaceborne computers, relating to the field of spaceborne solid-state memory technology. It includes a physical storage module and a fault-tolerant management module. The physical storage module comprises: a primary boot partition for storing the computer system's bootloader; a primary system root partition for storing system files; a backup partition comprising three independent sub-storage areas—a first sub-storage area, a second sub-storage area, and a third sub-storage area—each storing a mirrored data packet formed by combining data from the primary boot partition and data from the primary system root partition; and a data partition for storing user data. This architecture enables the primary boot partition and primary system root partition to operate in single-copy mode during normal task execution, completely avoiding the additional latency, bandwidth consumption, and CPU overhead caused by real-time data synchronization and online voting, thereby maximizing the core performance and efficiency of spaceborne task processing.
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