1553B bus multi-scene enhanced repeater and control method thereof

Abstract

The invention provides a 1553B bus multi-scene enhancement repeater. A signal is converted into a TTL level signal to be connected into an FPGA after a 1553B bus signal input analysis unit carries out score checking signal-to-single-ended conditioning on a bus waveform; effective bus synchronization heads and data bits are identified by the 1553B bus signal conversion control unit, and are subjected to signal identification in the FPGA and are cached and converted into to-be-output signals; and the 1553B bus signal coding, conditioning and enhancing output unit performs data coding, supplements a synchronous head and a parity check bit, conditions and enhances the amplitude of the signal to be output, and outputs the signal to be output. According to the 1553B bus communication system, signals on a bus network are received from one side, and the signals are forwarded to the other side of the bus network after being subjected to noise reduction, filtering and enhancement, so that attenuation caused by cables is effectively eliminated, the flexibility of the bus network is improved, the transmission distance of a 1553B bus is increased, and the expansibility of the bus system is enhanced.

Description

technical field [0001] The invention relates to the communication technical field of airborne avionics equipment, simulation analysis equipment and detection equipment, in particular to an enhanced repeater and a control method. Background technique [0002] With the increase of airborne equipment, the task of simulation analysis and detection of airborne 1553B bus becomes more and more important. With the increasingly complex application scenarios, in some models of products and ground equipment, due to system or product limitations, when designing cable networks, the traditional 1553B bus gradually cannot meet the requirements when doing network topology planning, mainly in the following three aspects aspect: [0003] (1) According to the 1553B bus standard, the maximum length of the stub connecting the bus coupling transformer to the terminal system is 6 meters, but there are application scenarios where the length of a certain terminal stub is extended to a length greate...

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Problems solved by technology

[0003] (1) According to the 1553B bus standard, the maximum length of the stub connecting the bus coupling transformer to the terminal system is 6 meters, but there are application scenarios where the length of a certain terminal stub is extended to a length greater than 6 meters, which cannot meet the demand;

[0004] (2) Bus signal After a certain transmission distance on the main bus of the bus cable, the signal amplitude becomes smaller. The signal waveform cannot be identified, which affects the bus signal quality;

[0005] (3) When adding new terminal equipment to a mature bus system, it is necessary to re-plan and manufacture the original bus cables, which is not conducive to system expansion

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