CAN bus double redundancy heat backup method

A CAN bus and waste heat technology, applied in the field of digital communication, can solve the problem of high cost of operation and maintenance, and achieve the effect of improving task reliability, simple circuit and low additional cost

Inactive Publication Date: 2016-03-16
BEIJING INST OF ELECTRONICS SYST ENG
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  • Claims
  • Application Information

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Problems solved by technology

Although this method has high reliability, the cost of operation and maintenance is relatively high.

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  • CAN bus double redundancy heat backup method
  • CAN bus double redundancy heat backup method
  • CAN bus double redundancy heat backup method

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Embodiment Construction

[0029] 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.

[0030] The invention discloses a dual redundant hot backup method, the specific steps of which are as follows:

[0031] Such as figure 1 As shown, at first, the user defines the arbitration domain of the standard frame in the CAN protocol as five information types, and the five information types include information type identification, sender node identification, receiver node identification, bus identification and frame identification; secondly , define the interactive information content corresponding to each informatio...

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Abstract

The invention discloses a CAN bus double redundancy heat backup method. The CAN bus double redundancy heat backup method comprises steps that, an arbitration domain and a data domain of a standard frame in a CAN protocol are customized by a user; the arbitration domain is defined to be five information types, and the five information types comprise an information type identification, a sending party node identification, a reception party node identification, a bus identification and a frame identification; interaction information content corresponding to each information type is defined, and main and secondary nodes are determined; information interaction fault types are defined, each information type is detected on the basis of the fault types, if the fault types occur during detection, double redundancy heat backup of a CAN bus is accomplished. Through the method, rapid smaller-than-100ms-bus heat switching can be realized, task reliability of the whole system is improved, moreover, only a backup CAN bus controller, a bus driver and an optical coupler are added to a hardware circuit, the circuit is simple, and extra cost is relatively low.

Description

technical field [0001] The invention relates to the field of digital communication, in particular to a method for realizing dual redundant hot backup and a CAN bus interface for communication among multiple nodes of a CAN bus in a vehicle-mounted information control system for military use. Background technique [0002] A military vehicle is an important part of a weapon system, and a comprehensive, intelligent, modular, and networked information control system has been established. In this highly integrated system, each vehicle subsystem performs information interaction through this integrated platform. The high development of informatization puts forward higher requirements for the communication network. Not only the system needs to have high transmission speed, but also high communication reliability. [0003] CAN bus is a serial data communication bus developed to solve the data exchange between numerous control and measurement devices in automobiles. It belongs to the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/40
CPCH04L41/0668H04L12/40189H04L2012/40215
Inventor 赵明陈彧欣雷峰成
Owner BEIJING INST OF ELECTRONICS SYST ENG
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