An On-orbit Reconfigurable Method

Abstract

The invention relates to an on-track reconfigurable method based on anti-fuse FPGA (field programmable gate array) and SRAM (static random access memory) FPGA because the SRAM FPGA is likely to have single event upset on the track, but the anti-fuse FPGA has the advantages of less internal resource, high reliability and applicability to the on-track control. According to the method, the anti-fuse FPGA and the SRAM FPGA are combined to process the on-track reconfiguration, the anti-fuse FPGA is used for receiving the reconfiguration data uploaded by the ground so as to reconfigure the function of the SRAM FPGA, so that not only can the stability and reliability in work of the SRAM FPGA be guaranteed, but also the on-track updating and maintenance requirement of a spacecraft can be met.

Description

technical field [0001] The invention belongs to the field of aerospace on-orbit technology, and in particular relates to an on-orbit reconfigurable method based on antifuse FPGA and SRAM FPGA. Background technique [0002] At present, FPGAs are more and more widely used in the aerospace field, and spacecraft mainly use two types of FPGAs: anti-fuse type and SRAM type. [0003] The advantage of anti-fuse FPGA is that it is non-volatile, no need to configure chips, no configuration current requirements, and it can run after power-on. Repeated programming cannot meet the requirements of on-orbit reconstruction. The advantage of SRAM FPGA is that it has rich internal resources and can be reprogrammed. However, because its function realization depends on its internal configuration data, it is easily affected by single event flipping when working in a space radiation environment. Single event flipping will cause the configuration unit of SRAM FPGA Bit flips occur in the system, ...

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Problems solved by technology

[0003] The advantage of anti-fuse FPGA is that it is non-volatile, no need to configure chips, no configuration current requirements, and it can run after power-on. Repeated programming cannot meet the requirements of on-orbit reconstruction

The advantage of SRAM FPGA is that it has rich internal resources and can be reprogrammed. However, because its function realization depends on its internal configuration data, it is easily affected by single event flipping when working in a space radiation environment. Single event flipping will cause the configuration unit of SRAM FPGA A bit flip occurs in the system, resulting in a system error and, in severe cases, damaging the device

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