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Spacewire network link signal quality test system and signal quality evaluation method

A signal quality and network link technology, which is applied in the field of SpaceWire network link signal quality test system, can solve the problems that the SpaceWire signal quality cannot be detected in real time, and there is no physical interface.

Active Publication Date: 2019-01-08
SHANGHAI SATELLITE ENG INST
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  • Abstract
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Problems solved by technology

[0003] In the existing engineering test, the SpaceWire network has no physical interface with the ground test system, so it is impossible to detect the quality of the SpaceWire signal in real time

Method used

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  • Spacewire network link signal quality test system and signal quality evaluation method
  • Spacewire network link signal quality test system and signal quality evaluation method
  • Spacewire network link signal quality test system and signal quality evaluation method

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that for those of ordinary skill in the art, a number of modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0021] As the current cutting-edge technology in the aerospace industry, SpaceWire network technology meets high-speed and high-efficiency transmission as its main goal. It has good EMC characteristics, supports error detection, exception handling, fault detection and recovery and other functions. It is very useful in spacecraft information network applications. Significance.

[0022] See attached figure 1 According to the ECSS-E-50-12 protocol standard, the SpaceWire networ...

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Abstract

The invention provides a SpaceWire network link signal quality test system. The system comprises a SpaceWire network link level feature module, a space-borne satellite mounting test module and a signal quality test box, wherein the space-borne satellite mounting test module is connected with the quality test box through the SpaceWire network link level feature module, the signal quality test box comprises a SpaceWire connector and a signal circuit board, the SpaceWire connector is connected with a satellite node device and the signal circuit board, and a signal line test point is led out from the signal circuit board. The invention further discloses a signal quality evaluation method. According to the invention, through development of a signal switching apparatus, four DS-encoded LVDS level signals of a SpaceWire link are switched, and difference signal waveforms or signal eye patterns are detected in real time by use of an oscilloscope.

Description

Technical field [0001] The invention relates to the technical fields of SpaceWire information network data interaction and network engineering testing, and in particular to a testing system and a signal quality evaluation method for SpaceWire network link signal quality. Background technique [0002] With the continuous progress of my country's aerospace science and technology, the application fields of aerospace technology continue to expand, and the functions of spacecraft are also continuously improved. This makes the internal equipment system of the spacecraft more and more powerful in processing data and the amount of information exchanged. The challenge of complex data processing requirements, and the development of spacecraft's on-board information interaction network are increasingly urgent. [0003] In the existing engineering tests, the SpaceWire network has no physical interface with the ground test system, and it is impossible to detect the quality of the SpaceWire signa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26
CPCH04L43/08
Inventor 董瑶海王震沈毅力朱振华杨炳轲
Owner SHANGHAI SATELLITE ENG INST
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