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System for realizing topological structure of controller area network (CAN) bus

A technology of CAN bus and topology structure, which is applied in the field of industrial control, can solve the problems of limited number of nodes, reduce system implementation cost, and low transmission rate of CAN bus, and achieve the effect of increasing quantity and reducing cost

Inactive Publication Date: 2012-04-18
TRAFFIC CONTROL TECH CO LTD
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  • Abstract
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: how to provide a CAN bus topology implementation system to overcome the problems of low CAN bus transmission rate and limited number of nodes, while reducing system implementation costs

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  • System for realizing topological structure of controller area network (CAN) bus
  • System for realizing topological structure of controller area network (CAN) bus
  • System for realizing topological structure of controller area network (CAN) bus

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] figure 1 It is a structural schematic diagram of the CAN bus topology realization system described in the embodiment of the present invention. like figure 1 As shown, the system includes: a master device 100 , an ARCnet (Attached Resource Computer net, a network communication standard) bus 200 , a bridge device 300 and a CAN device 400 . The master device 100 is connected to the ARCnet bus 200; the ARCnet bus 200 is connected to multiple bridge devices 300; each bridge device 300 can be connected to no more than 32 CAN devices 400 through the CAN bus. Wherein, the master device 100 and the ARCnet bus 200 both run the ARCnet protocol; the CAN device 400 runs the C...

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Abstract

The invention discloses a system for realizing a topological structure of a controller area network (CAN) bus and relates to the field of industrial control. The system comprises master equipment, an attached resource computer network (ARCnet) bus, bridge equipment and CAN equipment, wherein the master equipment and the bridge equipment are respectively connected with the ARCnet bus; the CAN equipment is connected with the bridge equipment; and the bridge equipment is used for realizing data exchange between the ARCnet bus and the CAN equipment and protocol switching between an ARCnet protocol and a CAN protocol. By adoption of the system, the problems of lower transmission speed rate of the CAN bus and limitation on quantity of nodes are solved, and the implementation cost of the system is reduced.

Description

technical field [0001] The invention relates to the technical field of industrial control, in particular to a CAN bus topology realization system. Background technique [0002] The CAN (Controller Area Network, Controller Area Network) bus has the characteristics of good real-time performance and strong anti-interference ability. CAN smart devices are widely used in industrial sites. In particular, the drive acquisition boards used in interlocking systems on railways mostly use CAN interfaces in consideration of factors such as safety and real-time. A relatively large-scale station often needs hundreds of drive acquisition boards, which requires a CAN bus to connect hundreds of CAN smart devices. At the same time, the interlocking system is developing towards centralized interlocking, that is, the interlocking centralized station places the interlocking host, and the interlocking host is connected to the drive acquisition boards of each non-centralized station through the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L12/417H04L12/46
Inventor 栾庆文李超赵育东
Owner TRAFFIC CONTROL TECH CO LTD
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