High-integrity coding method of 1553B bus

Abstract

The invention discloses a high-integrity coding method of a 1553B bus, and is used to solve the technical problem of poor integrity of an existing 1553B bus coding method. According to the technical scheme, a synchronous head coding mode of an instruction character and a state character of the 1553B bus is improved, a BM clearly distinguishes the instruction character and the state character from different code identification angles, a message interface is divided easily, determinacy of a bus semantic rule is achieved, a confusion identification problem of a 1553B bus monitor for the bus instruction character and the state character is solved, implementation technology is simple, and the difficulty is small. Optimization design of a vertical odd parity character of a 1553B bus message is increased, so the bit error detection rate of bus transmission is improved, the problems of time indeterminacy and the like which exist when bus error retransmission is performed are reduced, and integrity of a transmission content is improved. The method improves the integrity of the 1553B bus and the effective throughput rate of the 1553B bus at the same time, and shortens message delay transmission efficiency.

Description

technical field [0001] The invention relates to a bus encoding method, in particular to a high-integrity encoding method for a 1553B bus. Background technique [0002] The "MIL-STD-1553B Digital time division command / response multiplex data bus, dated 21 September 1978" (hereinafter referred to as the 1553B bus standard) promulgated by the US Department of Defense stipulates that the 1553B bus can be connected to 32 terminals. There are three types of terminals: bus controller (BC, BusController), remote Terminal (RT, RemoteTerminal) and bus monitor (BM, BusMonitor). BC is the only terminal on the bus that can organize the transmission of data messages; RT is the terminal that accepts the control of BC on the bus and completes message sending or receiving; BM is the terminal that receives messages on the bus and can have selective records, and it only "monitors" the information on the bus. Information transfers but does not participate in bus communication. [0003] The 15...

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the shortcomings of the poor integrity of the existing 1553B bus encoding method, the present invention provides a high integrity encoding method for the 1553B bus

In this method, by improving the encoding method of the synchronization header of the 1553B bus instruction word and status word, BM can clearly distinguish the instruction word and status word from different encoding recognition angles, easily divide the interface of the message, and achieve the certainty of the bus semantic rules. It solves the problem of confusion and recognition of bus command words and status words by the 1553B bus monitor, and the implementation technology is simple and difficult

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