A method for autonomous error correction management of space vehicle CAN bus

A CAN bus and space vehicle technology, applied in the field of electronics, can solve the problem that the quality level is not satisfying the space vehicle, etc., and achieve the effects of high practicability, reducing complexity and improving reliability.

Active Publication Date: 2022-04-19
航天科工空间工程发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, because the source of the development of the CAN bus interface is the automobile industry, its own quality level and other status are not satisfactory for the use of space vehicles.

Method used

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  • A method for autonomous error correction management of space vehicle CAN bus
  • A method for autonomous error correction management of space vehicle CAN bus
  • A method for autonomous error correction management of space vehicle CAN bus

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Embodiment Construction

[0041] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0042] One embodiment of the present invention proposes a kind of autonomous error correction management method of the space vehicle CAN bus,

[0043] Such as figure 1 As shown, the CAN bus network is composed of a master node and N slave nodes, the master node is a central computer, the central computer is a cold backup master and backup machine, and the slave nodes are other devices on board, and the devices are single backup or cold backup The master and backup machine, the CAN bus is a hot backup dual-channel bus (one...

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Abstract

The invention discloses an autonomous error correction management method for a CAN bus of a space vehicle. The CAN bus is composed of a master node and N slave nodes; Autonomous recovery management and autonomous recovery management of bus network errors by the master node; the autonomous recovery management of bus errors by the master node means that the master node regularly detects all channel buses and performs autonomous error correction on channel buses that do not meet the standards; The self-recovery management of the bus error by the slave node refers to that the slave node detects its own channel bus and performs autonomous error correction on the channel bus that finds an error; the self-recovery management of the bus error by the master node refers to The proportion of slave nodes with continuous communication abnormality detected in the period T5 is higher than the standard proportion, and an instruction is sent to start troubleshooting and diagnosis.

Description

technical field [0001] The present invention relates to the field of electronic technology, and more specifically, relates to an autonomous error correction management method of a space vehicle CAN bus. Background technique [0002] Space vehicles are generally composed of multiple subsystems, mainly composed of integrated information processing system, measurement and control and data transmission subsystem, power supply and distribution subsystem, attitude control subsystem, propulsion subsystem, structure and mechanism subsystem, thermal control subsystem and load system. Each subsystem has a lot of equipment. Taking the attitude and orbit control subsystem as an example, it includes sensors, actuators and controllers. [0003] Therefore, the design of spaceborne information network is usually more complicated. General interfaces for data and command communication between equipment may include 422 interface, 485 interface, CAN interface, LVDS interface, 1553B interface,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 孔晓健李存洲易钰驰张建伟李博
Owner 航天科工空间工程发展有限公司
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