BC switching method based on optical fiber bus and 1553B bus hybrid structure

Abstract

The invention relates to the field of electronic system bus communication design, and in particular relates to a BC switching method based on an optical fiber bus and 1553B bus hybrid structure. The switching method comprises the following steps: step one, judging whether the optical fiber communication and a 155B bus between a main bus controller and a backup bus controller are in fault; and performing the subsequent corresponding steps according to a judgment result; step two, switching the main bus controller to another IOM; step three, switching a condition of taking the main bus controller as the main controller to the condition of taking the backup bus controller as the main controller; step four, automatically switching to the condition of taking the backup bus controller as the main controller when the WDT of the backup MBI is time termination and the main bus controller is in fault. By use of the BC switching method based on the optical fiber bus and 1553B bus hybrid structure disclosed by the invention, the BC switching logic based on the optical fiber bus and 1553B bus hybrid structure is realized, the switching time satisfies a system real-time requirement, and the reliability of the electronic system 1553B bus communication is improved.

Description

technical field [0001] The invention relates to the field of electronic system bus communication design, in particular to a BC switching method based on the hybrid structure of optical fiber bus and 1553B bus. Background technique [0002] With the increasing comprehensiveness of electronic systems, the topological structure of the system is also becoming more and more complex. In an electronic system, a hybrid structure of optical fiber bus and 1553B bus is adopted, and the bus controller (BC) of the 1553B bus adopts a dual redundant hot backup design. After the system is started, one of the two interface modules is used as BC, and the other is used as backup bus controller (BBC). When BC cannot work normally, it needs to switch with BBC, and switch from BBC to BC to complete the control of 1553 bus communication. [0003] The 1553B bus is used as the internal and external information transmission channel of the electronic system, and its reliability has strict requiremen...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of BC switching method based on the hybrid structure of optical fiber bus and 1553B bus, to at least solve the problem of low communication reliability of existing 1553B bus

Images