A low-cost and high-reliability satellite-borne single-machine multi-chip SRAM type FPGA on-orbit reconstruction system and method

Abstract

The invention discloses a low-cost and high-reliability satellite-borne single-machine multi-chip SRAM type FPGA on-orbit reconstruction system. One chip is selected from a plurality of to-be-reconstructed FPGAs as a reconstruction interface FPGA, and an external reconstruction interface circuit is constructed in the reconstruction interface FPGA; The external reconfiguration interface circuit isused for receiving reconfiguration user function configuration data and a reconfiguration instruction which are injected on the ground, generating a reconfiguration telemetry data packet from the received reconfiguration user function configuration data and the received reconfiguration instruction, sending the reconfiguration telemetry data packet to the on-orbit reconfiguration control circuit, and downloading reconfiguration telemetry information on a satellite to the ground; The reconfiguration interface configuration data memory PROM is used for storing reconfiguration interface function configuration data of the reconfiguration interface FPGA; Wherein different spaces are set in the FLASH and correspond to the FPGAs to be reconstructed respectively, and the FLASH is used for pre-storing original user function configuration data of the FPGAs to be reconstructed or storing reconstructed user function configuration data used during on-orbit reconstruction; The on-orbit reconstructioncontrol circuit is responsible for communication with the reconstruction interface circuit, storage of reconstruction configuration data and loading and refreshing of the FPGA to be reconstructed according to control of a ground remote control instruction.

Description

technical field [0001] The invention belongs to the technical field of anti-radiation reinforcement of on-board electronic systems. Background technique [0002] SRAM-type FPGA has the characteristics of abundant resources, excellent performance and reprogrammability, and is widely used in on-board electronic equipment. On the one hand, the large number of configuration storage areas in SRAM-based FPGAs is prone to single-event flips in the space environment, so the "triple-mode redundancy + timing refresh" technology must be used in on-orbit applications. On the other hand, the reprogrammable feature of SRAM-type FPGA provides a technical approach for on-orbit maintenance of satellites after launch. By using on-orbit reconfiguration technology, the fault repair or function upgrade of on-board electronic equipment can be realized. At present, some spacecraft have successfully applied SRAM FPGA on-orbit reconfiguration technology to realize on-orbit fault repair. However, t...

AI Technical Summary

Problems solved by technology

However, the capacity of the PROM is small. For a large-scale SRAM FPGA, multiple PROMs need to be cascaded to store the configuration data of a SRAM FPGA.

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