Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Heat switching system and heat switching method of dual-redundant CAN bus

A CAN bus and switching system technology, applied in the field of CAN bus dual-redundant hot-switching systems, can solve the problems that redundant channels cannot cover bus disconnection system-level fault conditions, high cost, and high complexity of node processors. Correct switching function, stable performance, guarantee the effect of fault tolerance and reliability

Active Publication Date: 2010-12-08
BEIJING INST OF SPACE LAUNCH TECH
View PDF3 Cites 57 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of redundant processors has high reliability, but due to the large number of nodes, the node processors are required to be complex and costly; while the use of redundant channels is difficult to cover system-level fault conditions such as bus disconnection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat switching system and heat switching method of dual-redundant CAN bus
  • Heat switching system and heat switching method of dual-redundant CAN bus
  • Heat switching system and heat switching method of dual-redundant CAN bus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The dual redundant switching system of the present invention such as figure 1 , 2 As shown in , 3, a single processor is used to configure dual CAN controllers, dual CAN drivers and dual CAN bus structures. Each processor is paralleled with two CAN controllers A and B, namely CAN channel A and CAN channel B. Each controller Connect a CAN driver, and each CAN driver connects to a CAN bus.

[0054] The CAN driver management software running in the processor is responsible for the driver system and channel management functions. The function realization of the drive system is similar to that of the usual CAN drive software, which realizes the functions of system initialization, start, stop, and sending and receiving data, so I won’t go into details here. The channel management function is unique to the realization of dual redundant hot switching in the present invention. The upper-layer application software calls the CAN driver management software to send and receive dat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a heat switching system and a heat switching method of a dual-redundant CAN bus, and provides a networking mode of a dual-redundant CAN bus system and a dual-bus heat exchanging method. The networking mode of the dual-redundant CAN bus system is as follows: two bus cables are designed in network; each node unit comprises a microprocessor and two CAN controllers which are respectively connected with two bus cables to form two independent CAN channels. The dual-bus heat switching method is as follows: during operation, one of the channels is a working channel for receiving and transmitting messages and the other channel is used as a reserve channel for only receiving messages; and a CAN drive control software in the node monitors the channel state in real time, switches the reserve channel into a working channel when a fault occurs in the working channel and repairs the original working channel and sets the working channel to be a reserve channel.

Description

technical field [0001] The invention relates to a CAN bus double-redundancy hot switching system and method, and belongs to the technical field of CAN bus network-based control systems and double-redundant hot switching. Background technique [0002] In the control system based on the bus network, the fault tolerance and reliability of the system are one of the technical difficulties. Many studies have been carried out at home and abroad, and redundant design adopts more technologies. Common redundant design technologies are generally implemented based on redundant processors or redundant channels. The use of redundant processors has high reliability, but due to the large number of nodes, the node processors are required to be complex and costly; while the use of redundant channels is difficult to cover system-level fault conditions such as bus disconnection. [0003] The CAN bus dual-redundancy network hot-switching system and method proposed by the present invention fill...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/40H04L1/22
Inventor 许学雷孙招凤张洪彬
Owner BEIJING INST OF SPACE LAUNCH TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com