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Method and system for backing up and restoring important data in deep space exploration

A technology for important data and deep space exploration, which is applied in the direction of data error detection, error detection/correction, etc. for data redundancy in electrical digital data processing and calculation, and can solve problems such as no analysis and no solution

Active Publication Date: 2022-03-18
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These data backup and recovery technologies related to the embedded field, on the one hand, do not analyze the key and important data in the aerospace field; Data backup and recovery problems under different startup states of hot and cold

Method used

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  • Method and system for backing up and restoring important data in deep space exploration
  • Method and system for backing up and restoring important data in deep space exploration
  • Method and system for backing up and restoring important data in deep space exploration

Examples

Experimental program
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Effect test

Embodiment

[0060] The integrated electronic CPU is TSC695F, the total capacity of the important status data content of the software design is not greater than 256 bytes, and the data of various program-controlled instructions is not greater than 512K bytes. When a hot reset occurs, the integrated electronics directly restores data from the high end of its own memory; when a cold reset occurs (or when the EDAC two-bit error occurs, the application code is loaded from EEPROM to SRAM), it restores important data from the GNC control unit through 1553B, continuous Take 5 times, select and verify the correct data to use, and use the system time of GNC to restore the time information of the whole device.

[0061] The important status data backed up by the integrated electronic subsystem includes "48-bit time on the satellite, the uniform time calibration parameters of the primary hard clock, device separation flag, device and arrow separation flag, downlink channel working mode word information...

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Abstract

The invention provides a method and system for backing up and restoring important data in deep space exploration. Taking the integrated electronic management unit as the core, the important data of the GNC control unit is periodically backed up on the integrated electronic management unit, and the important data of the load controller is in the The periodic backup on the integrated electronic management unit and the important data of the integrated electronic management unit are periodically backed up on the GNC control unit. The data backup of the integrated electronic management unit is not only backed up in different places on the GNC control unit, but also designated at the high end of its own SRAM memory. local backup on the region. The invention can improve the self-recovery capability of the aircraft state after a fault occurs through data backup and recovery in the deep space detection environment.

Description

technical field [0001] The invention relates to the field of electronic equipment for deep space exploration aircraft, in particular to a method and system for backing up and restoring important data for deep space exploration. Background technique [0002] With the advancement of the deep space exploration project, due to the many stages of flight, for example, the Mars exploration stage is divided into multiple stages such as escape from the earth, cruising around the sun, capturing Mars, flying around the fire, etc., and there is only one chance for key program-controlled command actions in certain stages; Ground communication has a long delay, such as a round trip to Mars, which can take up to 45 minutes; there are special astronomical environments during the flight, such as the solar transit, which can cause the orbiter to lose contact with the ground for up to about 30 days, and normal communication cannot be performed. Therefore, the aircraft's demand for fault diagno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14
CPCG06F11/1448G06F11/1469
Inventor 张海邹亿党建成张旭光朱新波张玉花
Owner SHANGHAI SATELLITE ENG INST