Device and method for realizing private network ground inspection with spw interface based on fpga

Abstract

The invention discloses an FPGA-based special network ground inspection device and method with an SPW interface, which mainly solves the problem that the ground detection cannot be realized in the prior art. The device of the present invention includes a detection system and an FMC expansion slot, and the detection system is connected with external dedicated switching network equipment through the FMC expansion slot. The detection system is realized by FPGA, which includes an Ethernet media access control processor, a frame shaping module, a port polling module, a port processing module, an SPW interface module and a DS signal sampling module, through which the Ethernet frame is received, and its After converting into dedicated frame data, encode it into DS signal and send it out from the FMC expansion slot, and receive the data on the SPW link, convert it into Ethernet frame, and send it to the Ethernet device. The invention has the advantages of good portability, accurate and stable signal sampling, and can realize cross-board transmission of DS signals, and can be used for adapting the Ethernet protocol and the SPW protocol.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a ground detection device of a dedicated switching network, which can be used for bridging between Ethernet equipment and SpaceWire equipment. Background technique [0002] With the rapid development of computer technology and microelectronics technology, the on-board data bus has also been continuously improved and made breakthroughs. At present, the data buses known at home and abroad or planned to be applied on the star mainly include: RS-422 / 485, CAN, MIL-STD-1553, IEEE1355, FDDISFODB, PFODB MIISTD-1773, OBDH, IEEE1394, SpaceWire, FiberChannel, Ethernet, 12C, etc. However, because some spacecraft material and equipment manufacturers use their dedicated communication interfaces for inter-unit communication, a variety of different communication links will be used on the spacecraft, which increases the cost and prolongs the time required for spacecraft integrat...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this method is that most of the aerospace equipment uses the CAN bus, and most of the current commercial SOCs use the Ethernet IEEE802.3 protocol as the point-to-point interface. ground detection

If an additional conversion device is added on this basis, it will cause excessive overhead and resource constraints

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