Time-triggered Ethernet switching device compatible with SpaceWire bus

Abstract

The invention discloses a time-triggered Ethernet switching device compatible with a SpaceWire bus, and mainly solves the problem that data interaction between a time-triggered Ethernet and the SpaceWire bus cannot be realized in the prior art. The device comprises multiple data exchange channels, each channel comprises a time-triggered Ethernet switching module and a SpaceWire bus protocol processing module, the time-triggered Ethernet switching module exchanges and forwards the time-triggered Ethernet data frames, and the SpaceWire bus protocol processing module simultaneously finishes the protocol conversion from a SpaceWire data packet to the time-triggered Ethernet data frame and the protocol conversion from the time-triggered Ethernet data frame to the SpaceWire data packet. According to the invention, the data interaction between the time-triggered Ethernet and the SpaceWire bus is realized, the compatibility and expandability of the time-triggered Ethernet are improved, and thedevice can be used for an aerospace electronic integrated system.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a time-triggered Ethernet switching device, which can be used for data interaction in an aerospace electronic integrated system. Background technique [0002] The SpaceWire bus is a high-speed data transmission bus specially developed by the European Space Agency for aerospace applications. data processing network. Due to its high speed, flexible networking, easy implementation, low power consumption, and low cost, it has been widely used in various space tasks. However, the SpaceWire bus is mainly oriented to the transmission of a large amount of non-real-time data, and cannot meet the transmission requirements of key data with high real-time and reliability requirements. Time-triggered Ethernet TTE transmission technology has high time determinism, real-time performance, bandwidth partition protection capability and reliability, so it is widely used in aeros...

AI Technical Summary

Problems solved by technology

This method can be compatible with the transmission of different Ethernet protocol data frames on the basis of time-triggered Ethernet, and guarantees the high real-time performance and reliability of time-triggered Ethernet data, but this architecture is limited to the realization of different Ethernet protocol data. Compatibility between other widely used non-Ethernet protocol aerospace buses is not considered, which reduces the flexibility of the transmission network architecture and has certain limitations in application

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