Read-back self-reconfiguration-based fault-tolerant method for SoPC (Programming System on Chip) chip

Abstract

The invention discloses a read-back self-reconfiguration-based fault-tolerant method for an SoPC (Programming System on Chip) chip, aims to solve the problem of multiple particle overturning of a conventional radiation-hardened FPGA (Field Programmable Gate Array) every day in the space, and provides a method for realizing the autonomous fault detection and fault recovery of an SoPC chip chip on the basis of a read-back self-reconfiguration manner on the premise of not enlarging the area of the chip. The method comprises the following steps of reading configuration data in an FPGA configuration memory and original configuration data stored in a Flash, then comparing the configuration data with the original configuration data bit by bit, verifying whether read-back configuration data has a fault or not by comparing a file format difference, positioning the fault, and performing fault correction according to an original configuration file. According to the method, fault detection, fault interpretation and fault recovery are completed under the condition of no additional peripheral detection equipment and detection circuit, the reliability of the SoPC chip in an outer space application environment is improved, and the development of the SoPC chip is promoted.

Description

technical field [0001] The invention relates to an intelligent autonomous fault tolerance and fault repair of a domestic SoPC (Programing System on Chip) chip BM3109, in particular to a SoPC chip fault tolerance method based on readback self-reconfiguration, so that the SoPC chip can be used in an outer space environment. Ability to autonomously detect and repair faults. Background technique [0002] Traditional radiation-hardened FPGAs will have multiple particle flips (SEU) in space every day. For example, the XQVR300 FPGA in LEO orbit flips an average of 2.05 times a day, while the XQR4036XL in a 98-degree inclined orbit flips up to 148.5 times a day when solar flares are abnormal. Second-rate. In order to adapt to the harsh space environment, traditional space-borne electronic equipment generally adopts redundant methods to improve system reliability, such as dual-machine backup, three-machine backup and other redundancy schemes, but most of the redundancy schemes are a...

AI Technical Summary

Problems solved by technology

In order to adapt to the harsh space environment, traditional space-borne electronic equipment generally adopts redundant methods to improve system reliability, such as dual-machine backup, three-machine backup and other redundancy schemes, but most of the redundancy schemes are aimed at known Designed for failure modes, there is no effective way to deal with complex and unknown failures

In addition, even if the mechanism of triple-mode redundancy TMR is used, it can only accommodate one fault at most. When there are two or more faults, errors will occur because the data arbiter cannot give the correct arbitration result.

The triple-mode redundancy method can only filter faults, but cannot repair the faults that occur

At the same time, the satellite on a chip itself is extremely small, and the redundant design scheme will inevitably lead to an increase in volume, which is contrary to the design concept of the satellite on a chip

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