A fault detection and switching method that takes into account the performance monitoring of 1553b dual-bus network

Abstract

The invention discloses a fault detection and switching method considering performance monitoring of a 1553B dual bus network. In a test phase before takeoff of an aircraft, part of 1553B bus data communication is carried out on an A and B dual bus network, the performance of each channel and bus node of the 1553B dual bus network can be effectively monitored by real-timely monitoring whether bus data has frame loss, error codes, data retransmission and other data, and compared with a method for performing data communication only on a single channel before the takeoff of a traditional dual bus network, by adopting the fault detection and switching method disclosed by the invention, the communication performance of the dual bus network can be effectively monitored in real time, and faults on a bus can be earlier found. And meanwhile, according to the fault detection and switching method disclosed by the invention, different fault detection and bus switching methods under fault conditions are set for different nodes on the bus network, and thus the real-time fault switching can be ensured when the bus nodes have faults during the flight of an aircraft system, the normal operation of a bus communication network can be guaranteed, and the reliability of flight can be guaranteed.

Description

technical field [0001] The invention relates to a fault detection and switching method that takes into account the performance monitoring of a 1553B dual-bus network, and belongs to the technical field of communication. Background technique [0002] The 1553B bus is a time-division, command / response multiplexed data bus with a transfer rate of 1Mb / s. Usually, the flight control module is used as the bus controller BC, each intelligent module is connected to the bus through the 1553B bus protocol chip, and the flight data acquisition module is used as the bus monitor to monitor the bus data in real time. The transmission of all signals is controlled by BC, and MT can automatically obtain all signals on the bus. The 1553B data communication bus method has been widely adopted in various models, and the overall layout is well-defined. It is compatible with different platforms, and it also makes fault location fast and accurate, and troubleshooting is faster than before. [000...

AI Technical Summary

Problems solved by technology

Therefore, under normal conditions, there are relatively few functional tests on the B bus, and it is impossible to fully assess the function and performance of the B bus, and it is difficult to detect failures such as network performance degradation of the B bus early

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