On the Avionics Full Duplex Switched Ethernet technologies

摘要

As an advanced on-board data transmission protocol, Avionics Full Duplex Ethernet (AFDX) was initiated by Airbus in the evolution of its A380 Aircraft. In this paper, we deduce several properties of an AFDX network and present an AFDX System Integration Algorithm (ASIA) to guide the topology design of an AFDX network as well as Virtual Link (VL) parameters determination. We also propose an Integrity Checking (IC) algorithm based on the difference of the sequence numbers between redundant channels. The algorithm reasonably expands the reception range of valid frames and avoids potential deadlock, thus greatly enhancing the reliability of AFDX protocol.