Method for restoring star load computer hardware scanning error

A technology of on-board computer and hardware scanning, applied in the direction of response error generation, redundant code for error detection, etc., can solve the problems of complex system, frequent computer participation, computer time shortage, etc., to achieve simple system composition and reduce hardware labor. Participate in circuit diagram design and debugging, improve utilization efficiency

Active Publication Date: 2009-01-21
AEROSPACE DONGFANGHONG SATELLITE
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Problems solved by technology

This design method makes the system more complicated, and at the same time, the computer needs to participate more frequently in the implementation process, and the computer time is tight

Method used

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  • Method for restoring star load computer hardware scanning error
  • Method for restoring star load computer hardware scanning error
  • Method for restoring star load computer hardware scanning error

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Embodiment Construction

[0024] Such as figure 2 As shown, the calculation and processing unit of the on-board computer processor is the core component of the entire on-board computer, which is responsible for the reading of instructions, analysis and scheduling, etc. Access parts, data write back parts. Corresponding to the five major components is a five-level pipeline structure, which is a five-level pipeline structure such as instruction reading, instruction decoding, instruction execution, instruction storage, and instruction write-back. The computing processing unit of the on-board computer processor passes The bus is connected with the external storage module, the error correction and detection module and the hardware scanning error recovery module, and various functional components are obtained and controlled through the internal bus. Since the focus of the present invention is not on the structure of the on-board computer itself, the function and structure of the on-board computer itself ar...

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Abstract

The invention relates to a method for scanning hardware and recovering errors of an on-board computer, which comprises: firstly, reading data in an external memory to correct the errors by an error detection correction module, sending data which is corrected to a bus in a processor, waiting for an order of a calculating and processing unit CPU which is connected with the bus of the processor, secondly, setting the scanning area, the scanning rate and the using function of a hardware scanning error recovering module by the CPU, starting the hardware scanning error recovering module, thirdly, writing data which is located on the bus in the processor and is corrected back to the external memory through the error detection correction module by the hardware scanning error recovering module according to the scanning area and the scanning rate which are determined by the CPU, and realizing the error recovering function. The invention improves the fault tolerance and reliability of a satellite on-board computer, lowers the risk of satellite motion in an orbit, and solves the practical problem that when a satellite is in the orbit and when faults of the memory appear, the automatic recovery of a satellite in orbit memory is realized through means of hardware automatic scanning and real time error recovery.

Description

technical field [0001] The invention relates to a scanning error recovery method for an on-board computer, in particular to a hardware scanning error recovery method for an on-board computer. Background technique [0002] At present, many satellites at home and abroad have realized the function of error correction and detection on the on-board computer, such as the host computer of my country's small satellite series, "TS-1.1 small satellite" in "Computer Engineering and Science" 2002 Volume 24 Issue 2 The Design and Realization Method of the Error Correction and Detection Circuit of Star Computer RAM", which uses a special chip with EDAC function, plus cache, and EDAC controller, such as figure 1 shown. This design method makes the system more complicated, and at the same time, the computer needs to participate more frequently in the implementation process, and the computer time is tight. Contents of the invention [0003] The technical solution of the present invention ...

Claims

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Application Information

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IPC IPC(8): G06F11/10
Inventor 施思寒李孝同
Owner AEROSPACE DONGFANGHONG SATELLITE
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