A Simulation Method of 1553b Bus Protocol Based on Data Block Transmission

Abstract

The invention provides a 1553B bus protocol simulation method based on data block transmission. Firstly, a communication frame is obtained, the data characteristic model of each data block in the communication frame is obtained, then a starting mark position and a data block counting number in a data characteristic model of a data block in a current communication frame are modified and are sent to a data receiving end, finally the data receiving end is controlled to obtain the data of the current data block and analyze the data according to the data block length and sub address in the data characteristic model, if the data of the current data block is successfully obtained and analyzed, a data sending end is notified to send a next data block data characteristic model, otherwise, the data sending end is notified to retransmit the current data block data characteristic model until all data blocks of the current data frame are successfully obtained and analyzed at the data receiving end.

Description

technical field [0001] The invention relates to a 1553B bus protocol simulation method based on data block transmission, which is mainly used for simulation and testing of satellite 1553B bus communication, and efficiently completes the design of a 1553B bus communication simulation platform, belonging to the technical field of spacecraft control. Background technique [0002] At present, the 1553B bus communication protocol is widely used in the field of aerospace control. The data content transmitted by the 1553B bus has the following characteristics: there are many types of data block formats; the timing of data block transmission is complex. [0003] The traditional 1553B bus protocol simulation method is generally based on fixed-format data block transmission, which has the following disadvantages: [0004] (1) The traditional simulation method is based on fixed-format data block transmission, and data blocks generally have strict length restrictions, which cannot meet ...

AI Technical Summary

Problems solved by technology

[0007] The technical solution problem of the present invention is: overcome the deficiencies in the prior art, provide a kind of 1553B bus protocol emulation method based on data block transmission, aim at the problem that the traditional bus protocol emulation method design is cumbersome and messy, and the scalability is poor, adopt feature extraction, according to The data block type, interface and data transmission communication characteristics propose a data block transmission communication method, which effectively describes the content of the transmitted data through the data feature model, and solves the reliability of data transmission through the protocol handshake. Compared with the existing technology, it has advantages in Reliable data transmission is realized between the data sending end and the data receiving end, which significantly improves the bus transmission efficiency and transmission reliability, and greatly reduces the advantages of simulation and maintenance costs

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