Data frame receiving and analyzing device and method based on VL

Abstract

The invention discloses a data frame receiving and analyzing device based on a VL. The receiving and analyzing device comprises an interface circuit, an FPGA module, an industrial control core CPU and an external DDR3. The FPGA module comprises a frame recognition and verification module, a frame counting module, a timing and second interruption generating module, a frame capturing module, an analyzing module and a cache module. The interface circuit is used for converting physical electric signals of network data to digital signals. The FPGA module is used for analyzing and processing VL data frames of the digital signals, and storing the data captured in real time to the external DDR3. The industrial control core CPU is used for control and configuration of a local circuit. The received data frames based on the VL are processed due to a hardware time sharing mode, and the real-time hardware processing and real-time software refreshing of the AFDX data frames based on the VL are guaranteed.

Description

[0001] technical field [0002] The present invention relates to an AFDX (Avionics Full Duplex Switched Ethernet, avionics full-duplex switched Ethernet) aviation data bus based on VL (Virtual link virtual link) receiving analysis equipment and method, the equipment and method are based on high integration FPGA (Filed-Programmable Gate Array, Field Programmable Gate Array) design and VL-based reception test requirements in the AFDX aviation data bus ARCIN664 protocol standard. Background technique [0003] With the rapid development of avionics equipment and avionics networks, the AFDX data bus has begun to be used as the aircraft internal communication data bus in the new generation of aircraft due to its high reliability, fixed time delay, and high communication rate. But the corresponding domestic AFDX bus test equipment has not yet been developed, and the existing related product technology is relatively lagging behind, and it is only suitable for communication in specif...

AI Technical Summary

Problems solved by technology

Usually, the software is used to query the received VL-related data at regular intervals. If the received VL data is not retrieved, each query must traverse all VL lookup tables, and the load on the software is too large.

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