Private network ground detection device with SPW interface based on FPGA and method

Abstract

The invention discloses a private network ground detection device with an SPW interface based on an FPGA, and a method, and mainly solves the problem that ground detection cannot be achieved in the prior art. The device comprises a detection system and an FMC expansion slot, and the detection system is connected with external special switching network equipment through the FMC expansion slot. Thedetection system is realized through an FPGA. The system comprises an Ethernet media access control processor, a frame shaping module, a port polling module, a port processing module, an SPW interfacemodule and a DS signal sampling module. The modules receive Ethernet frames, convert the Ethernet frames into dedicated frame data, encode the dedicated frame data into DS signals, send the DS signals out of the FMC expansion slot, receive data on an SPW link, convert the data into Ethernet frames and send the Ethernet frames to Ethernet equipment. The method has the advantages of being good in transportability, accurate and stable in signal sampling and capable of achieving DS signal cross-board transmission, and can be used for adaptation of an Ethernet protocol and an 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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