An airborne multi-channel arinc429 bus real-time acquisition and data filtering method

Abstract

The invention relates to the field of flight test data acquisition of an airborne ARINC429 bus, in particular to an airborne multi-channel ARINC429 bus real-time acquisition and data filtering method. Traditional ARINC429 bus acquisition modules often use discrete components or pure FPGA logic circuits. The discrete components have large circuit volume, high power consumption, and expensive protocol chips, while pure FPGA logic circuits have poor user-programmable flexibility, which brings great harm to practical applications. Inconvenience. The present invention provides a solution with DSP and FPGA as the core architecture, makes full use of the flexibility of DSP and the fast parallelism of FPGA, realizes the real-time processing and screening of multi-channel ARINC429 bus data, and converts the data according to a specific format and sampling rate are sent to the backplane bus in the flight test system for calling by the flight test system. And through the way of looking up the table, the way of exchanging space for speed greatly speeds up the processing speed of the screening of multi-channel ARINC429 data words.

Description

technical field [0001] The invention relates to the field of flight test data acquisition of an airborne ARINC429 bus, in particular to an airborne multi-channel ARINC429 bus real-time acquisition and data filtering method. Background technique [0002] In the flight test, the airborne ARINC429 bus is widely used in various civil aircraft and military aircraft. The flight test data collection often involves real-time acquisition and data filtering of the multi-channel ARINC429 bus, and the processing results are often sent to the ground for real-time monitoring through the telemetry link. . Therefore, how to efficiently collect multi-channel ARINC429 bus signals is a research topic with practical engineering value. [0003] In the flight test system, ARINC429 bus acquisition is often a module in the system. The test system can incorporate ARINC429 bus data into the data link of the flight test system to realize data sharing between devices. However, the traditional ARINC4...

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Problems solved by technology

However, the traditional ARINC429 bus acquisition module often uses discrete components or pure FPGA logic circuits. The discrete components have large circuit volume, high power consumption, and expensive protocol chips, while pure FPGA logic circuits have poor user-programmable flexibility, which brings great harm to practical applications. Inconvenience

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