APS (Auto-Protection Switch) redundancy method based on SpaceWire bus

A bus, redundant technology, applied in the field of aerospace communication

Inactive Publication Date: 2016-11-09
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many ways to implement this mechanism, but none called the SpaceWire specification

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  • APS (Auto-Protection Switch) redundancy method based on SpaceWire bus
  • APS (Auto-Protection Switch) redundancy method based on SpaceWire bus
  • APS (Auto-Protection Switch) redundancy method based on SpaceWire bus

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Embodiment Construction

[0023] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following Example.

[0024] Based on the SpaceWire bus protocol, combined with the existing redundancy technology, the automatic protection switching device (APS) in the present invention is designed on the traditional SpaceWire bus board (designed with two SpaceWire bus nodes). Connect two independent SpaceWire node modules through an APS module.

[0025] A SpaceWire bus redundancy verification system of the present invention realizes system redundancy and ensures bus transmission reliability through the APS device of the SpaceWire bus node. The SpaceWire bus redundancy verification system consists ...

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Abstract

The invention discloses an APS (Auto-Protection Switch) redundancy method based on a SpaceWire bus. The method comprises the following steps that: 1, an APS device starts working after data communication based on the SpaceWire bus is started; 2, an APS module connects two independent SpaceWire node modules, and continuously detects working states of a primary SpaceWire node and a standby SpaceWire node; and 3, the APS module transmits a switch request data code to an opposite end by a far-end failure indication signal through a standby node link when a primary node link fails in order to generate a switch signal for an APS module of the opposite end, the APS module rapidly switches a bus at the opposite end to a standby SpaceWire bus after reception of the switch signal, a standby transmitting module at the opposite end transmits a switch confirmation data code to a local end standby node at the same time, and the local end standby node generates a local switch signal for a local APS module after reception of the switch confirmation data code.

Description

technical field [0001] An APS redundancy method based on a SpaceWire bus of the present invention belongs to the technical field of aerospace communication, and in particular relates to an APS (Auto-Protection Switch) automatic protection switching redundancy technology based on a SpaceWire bus. Background technique [0002] The SpaceWire bus is a brand-new high-speed (2Mb / s-400Mb / s), point-to-point, full-duplex serial bus network jointly formulated and proposed by the European Space Agency, European Space Corporation and academia. The bus standard is dedicated to the processing of spacecraft payload system data and control information to meet the goal of high-performance and high-speed data transmission in the future, and provides a unified infrastructure for connecting sensors, data processing units, and large-capacity storage. The SpaceWire bus has good electromagnetic compatibility characteristics, and at the same time strengthens the functions of online error detection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L12/24
CPCH04L12/40006H04L41/0659
Inventor 陈娟朱有伟赵君伟付永领
Owner BEIHANG UNIV
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