A Fault Diagnosis Method for Spaceborne Computer

Abstract

The invention discloses a fault diagnosis method for an on-board computer, which completes the fault diagnosis of the on-board computer through the cooperative work of software and hardware, including: fault detection based on assertion and hardware fault event drive. Assertion-based fault detection includes: the hardware system of the onboard computer provides the operating interface and value range of hardware-driven parameters, which are read back and judged by the software; the software detects the input parameters and status return of the function interface; the work of the input parameters through the assertion range, when it is determined that the input parameters exceed the threshold, an exception is thrown in the form of a soft interrupt or a callback function, and fault diagnosis and recovery are completed in the exception handling process of the processor; hardware fault event drivers include: synchronization of control flow and data flow The state feedback method interrupts the current operation process of the processor with three trigger modes of bus access wait signal, error signal and interrupt signal, and performs fault identification and recovery according to the event-driven source and feedback information.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis, in particular to a fault diagnosis method for an on-board computer. Background technique [0002] Due to adverse factors such as the radiation of high-energy particles in the space environment, solar flares, and high and low temperature differences, the logic resources and storage media in the computer are prone to various transient or permanent failures. The requirements for the autonomous control of the height of the spacecraft, the requirements for the adaptability to complex space environments, and the requirements for continuous and uninterrupted work in key events require the autonomous fault diagnosis and fault tolerance capabilities of on-board electronic equipment, especially the core control and computing components. [0003] Fault diagnosis and fault tolerance technology mainly achieves diagnosis and recovery of equipment faults by adding redundant information, backup, coding, ...

AI Technical Summary

Problems solved by technology

In the development of modern space-borne electronic equipment, due to the improvement of product performance, the increase of integration and design scale, and the use of a large number of large-scale integrated circuits, the existing diagnostic and fault-tolerant methods can no longer meet the special needs of space-borne electronic equipment. Is the application requirement of the on-board computer

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