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Special-purpose comprehensive quality evaluation system for aircraft ARINC429 bus

A comprehensive evaluation and bus technology, applied in general control systems, control/regulation systems, test/monitoring control systems, etc.

Active Publication Date: 2019-04-30
COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality of bus data transmission is not limited to the integrity of the protocol layer. For example, some buses have been tested by the protocol layer, and the bit error rate is still in the safe range, but the electrical characteristics of the signal are close to the critical state. For this Class bus cables still need repair

Method used

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  • Special-purpose comprehensive quality evaluation system for aircraft ARINC429 bus
  • Special-purpose comprehensive quality evaluation system for aircraft ARINC429 bus

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Embodiment Construction

[0016] The implementation and use of the preferred embodiments of the present invention will be discussed in detail below in conjunction with the accompanying drawings. It should be understood, however, that the specific embodiments discussed are merely illustrative of specific ways to make and use the invention and do not limit the scope of the invention. The expression of the structural position of each component such as up, down, left, right, top, bottom, etc. in the description is not absolute but relative. These directional expressions are appropriate when the various components are arranged as shown in the drawings, and when the positions of the various components in the drawings are changed, these directional expressions are also changed accordingly.

[0017] Aircraft ARINC429 bus dedicated quality comprehensive evaluation system such as figure 1 As shown, it is mainly composed of NI PXI bus chassis, controller and I / O board. Among them, the PXI bus chassis provides t...

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Abstract

The invention provides a special-purpose comprehensive quality evaluation system for an aircraft ARINC429 bus. The system comprises a controller, a protocol layer test module, an electrical layer testmodule and a physical layer test module, wherein the protocol layer test module, the electrical layer test module and the physical layer test module are respectively connected to the controller. Theprotocol layer test module is used for detecting a bit error rate and a packet loss rate of an ARINC 429 bus signal based on an interface control file database; the electrical layer test module detects the electrical parameters of the ARINC 429 bus signal based on relevant clauses of the ARINC 429 specification; and the physical layer test module is used for testing connectivity of the ARINC 429 bus cable based on an spread spectrum time-domain reflectometry.

Description

technical field [0001] The invention relates to a bus quality evaluation system, in particular to an aircraft ARINC429 bus-specific comprehensive quality evaluation system. Background technique [0002] With the development and progress of aviation technology, electronic information, computer technology, control technology, etc., more and more electronic systems have been popularized due to their high efficiency, rapidity and reliability. Civil aircraft must ensure its safety and reliability, so the information interaction between avionics systems and some airborne sensors or other electronic devices has become a major problem in aircraft design. As the "skeleton" and "nerve" of the avionics system, the aviation data bus plays a vital role in improving the overall performance of the aircraft. [0003] In the development process of aviation bus, in order to improve its safety and reliability, a series of standards and specifications have been formulated. Airborne bus in civi...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065
Inventor 刘妍陈曦赵宏旭王家林
Owner COMAC
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