1553B bus program control fault injection device

Abstract

The invention discloses a 1553B bus program control fault injection device. The 1553B bus program control fault injection device comprises a Manchester coder, an odd check fault coder, a synchronous head fault coder, a zero passage fault coder, a data word length fault coder, a message length fault and replacing command fault coder, a data interval fault coder and a response delay fault coder. The 1553B bus program control fault injection device is used for verifying effectiveness, reliability and testability of 1553B bus communication equipment and a 1553B bus communication system, solves the defect and problem that a bus communication process is damaged in a 1553B bus fault injection test process by the traditional method, is realized by adopting an FPGA (field programmable gate array) firmware and has universality. An input end is connected with a 1553B bus control IP (internet protocol) core or chip, various faults are generated by changing a coding mode, and the communication function of the 1553B bus control IP core or chip is not intervened. Other sources such as a phase locking ring and a storage are not called and the hardware expense is small.

Description

technical field [0001] The invention relates to the technical field of avionics communication bus simulation test, in particular to a 1553B bus line control fault injection device. Background technique [0002] The 1553B bus refers to the digital time division command / response multiplex transmission bus that complies with the US military standard MIL-STD-1553B, and the corresponding Chinese military standard is GJB289A-97 (the content of the two standards is consistent). The communication process of the 1553B bus is initiated by the bus controller (BC, Bus Controller) and adopts the command-response response control mechanism, which provides transmission reliability guarantee and is widely used in military, industrial and scientific research fields, especially military airborne electronic equipment And low-to-medium rate data transmission of aerospace electronic equipment. [0003] GJB5186 is a military standard for test methods formulated by my country for the MIL-STD-1553...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the disadvantages of the traditional method of destroying the bus communication process during the 1553B bus fault injection test process, the present invention provides a 1553B bus line control fault injection device to solve the above technical problems

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