MIL (Military)_STD(Standard)_1553 bus analysis and triggering method

A bus analysis and trigger signal technology, applied in the field of communication, can solve the problems of data flushing, unable to collect bus data at the same time, increase dead time, etc., to achieve small dead time, fast analysis and trigger speed, and good real-time performance Effect

Inactive Publication Date: 2016-06-08
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

Another problem with software decoding is that during the decoding process, the software cannot collect the data still being transmitted on the bus at the same time, otherwise the previously obtained data will be "washed out", which greatly increases the "dead time" of decoding

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  • MIL (Military)_STD(Standard)_1553 bus analysis and triggering method
  • MIL (Military)_STD(Standard)_1553 bus analysis and triggering method
  • MIL (Military)_STD(Standard)_1553 bus analysis and triggering method

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Embodiment Construction

[0057] Below in conjunction with accompanying drawing and specific example, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0058] A MIL_STD_1553 bus analysis and trigger method is characterized in that it comprises:

[0059]S1. Set the level when the MIL_STD_1553 bus is in an idle state to be an intermediate level;

[0060] S2, after the MIL_STD_1553 signal is processed by the analog-to-digital conversion module (A / D), under the cooperation of the sampling clock, the processed signal is sampled, and the signal after the sample is sent to the digital comparison module;

[0061] The clock...

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Abstract

The invention discloses an MIL (Military)_STD(Standard)_1553 bus analysis and triggering method, which comprises the following steps: S1) setting a level generated when a bus is under an idle state as an intermediate level; S2) under the cooperation of a sampling clock, carrying out decimation processing on a bus signal subjected to analog-digital conversion by a decimation module; S3) independently comparing a snapshot signal with a high trigger threshold value signal greater than the intermediate level and a low trigger threshold value signal smaller than the intermediate level to independently obtain a signal H and a signal L (the same below); S4) carrying out positive phase or negative phase extraction on the signal H and the signal L; S5) detecting an initial condition of frame data; S6) extracting a frame synchronization segment through a frame synchronization segment extraction module to obtain the frame synchronization segment; S7) identifying the frame synchronization segment by a state machine, and determining the type of the frame data; S8) extracting a frame field via a frame field extraction module; and S9) identifying the frame data by a comparison triggering module according to the state machine to generate a trigger signal, wherein the trigger signal is stored to an acquisition control module for calling.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a MIL_STD_1553 bus analysis and trigger method. Background technique [0002] MIL_STD_1553 is a military standard that specifies the electrical specifications and protocol characteristics of serial buses, originally designed specifically for data communications in avionics. MIL_STD_1553 originated from the A2-K draft standard developed by the Society of Automotive Engineers (SAE) in 1970. After being reviewed and revised by the government and the army in 1973, it was frozen as a military standard, and now the standard is regulated by AS15531 as a commercial document and supervised by SAE. Although widely used in US military applications, the standard is also widely used in mass transportation, spacecraft, and manufacturing, and has been recognized and implemented by NATO and many governments. [0003] The existing MIL_STD_1553 bus analysis and triggering technology is bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
CPCG06F13/4282
Inventor 刘纪龙贺增昊张成森刘永
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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