A Hierarchical and Hierarchical Spacecraft Single Event Soft Error Protection System

Abstract

The invention discloses a spacecraft single particle soft error protection system structure. According to the spacecraft single particle soft error protection system structure, single particle soft error protection is divided into four grades according to the design characteristics of spacecraft in China, unified design is adopted, different means and strategies are adopted for protection of the grades, and the graded and hierarchical single particle soft error protection system structure is formed. The whole system structure utilizes satellite borne computing resources and completes a single particle soft error protection task jointly through a center computer fault-tolerance and system-level single particle protection module, a center computer, a comprehensive service unit and sub-system information processing units, and the system structure has good overall and local control performance. The grades of soft error protection strategies make full use of relevance between the spacecraft information processing units, the functional modules completing the single particle soft error protection can coordinate with one another, and a clear task interface is also kept.

Description

technical field [0001] The invention relates to a spacecraft single-particle soft-error protection system and belongs to the technical field of spacecraft single-particle soft-error protection. Background technique [0002] Single event soft error is one of the common space radiation effects in spacecraft on-orbit operation. In recent years, single event soft error has seriously affected the uninterrupted and stable service of many spacecraft in my country. In order to meet the requirements of large-capacity, high-speed, and complex information processing, the information processing units of existing spacecraft need to use a large number of devices such as DSP, FPGA, single-chip microcomputer, processor, I / O, and bus controller. The production level of single-event hardening devices is limited, among which there are many highly sensitive devices for single-event soft errors. Therefore, the uninterrupted and stable service of my country's spacecraft in orbit is facing a severe...

AI Technical Summary

Problems solved by technology

In order to meet the requirements of large-capacity, high-speed, and complex information processing, the information processing units of existing spacecraft need to use a large number of devices such as DSP, FPGA, single-chip microcomputer, processor, I / O, and bus controller. The production level of single-event hardening devices is limited, among which there are many highly sensitive devices for single-event soft errors. Therefore, the uninterrupted and stable service of my country's spacecraft in orbit is facing a severe threat of single-event soft errors. Significant Common Issues in Effectiveness

[0003] At this stage, in response to single-event soft errors, my country's spacecraft have adopted protection measures such as ASIC transfer, timing refresh, and triple-mode redundancy. However, most of the above measures are concentrated at the device and stand-alone level, lacking system-level unified design and comprehensive utilization of information.

Images