FPGA and DSP-based satellite-borne electronic system data interface system

Abstract

The invention discloses an FPGA and DSP-based satellite-borne electronic system data interface system. The system comprises an FPGA processing module, a DSP processing module, an interface circuit module and an accessory circuit module, wherein the DSP processing module is used for realizing SpaceWire data coding-decoding processing, reception-transmission control and a SpaceWire control protocol, and communicating with a SpaceWire node; the FPGA processing module is used for realizing functions of processing data of different buses, controlling information flows and exchanging information between interfaces; and the interface circuit module is used for realizing data of CAN node equipment, 422 bus node equipment, 485 bus node equipment and 1553B node equipment. The system disclosed by the invention can realize the mutual signal conversion between a SpaceWire signal and a CAN signal, a 422 signal, a 485 signal and a 1553B signal, can solve the problems of mutual compatibility and mutual operation between SpaceWire data and interface information of different buses, and can be widely applied to various space equipment electronic systems.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to an FPGA+DSP-based on-board electronic system data interface conversion system. Background technique [0002] With the continuous development of electronic technology and computer technology, the complexity of space missions has increased, and the data interface forms of spaceborne equipment have become more and more diverse. CAN signal interface, 485 signal interface, 422 signal interface have been widely used in spaceborne equipment. With the rapid development of the SpaceWire high-speed bus in the aerospace field, it has gradually become the standard bus for on-board electronic systems. However, the prior art has the problem that SpaceWire signals, CAN signals, 485 signals and 422 signals cannot be converted to each other, and the compatibility is poor. [0003] In order to simplify the internal circuit structure of the satellite, reduce the design cost, make the satellite...

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Problems solved by technology

[0004] The technical problem solved by the present invention is: overcome the deficiencies of the prior art, provide a kind of on-board electronic system data interface system based on FPGA and DSP, the integration degree is high, realize the simple interface conversion module, solve the SpaceWire signal and existing in the prior art CAN signal, 485 signal and 422 signal cannot be converted to each other, and the compatibility is poor. It is used for the mutual conversion of the data interface of the on-board electronic system.

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