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Layer control tree-shape network based on CAN bus for supporting plug and use

A CAN bus, layered control technology, applied in star/tree network, data exchange network, data exchange through path configuration, etc., can solve the problem that CAN bus is not easy to build large-scale control communication network, etc., to avoid broadcast storms , the effect of reducing maintenance costs and narrowing the arbitration domain

Inactive Publication Date: 2007-01-03
山东富臣发展有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current CAN bus is not easy to build a large-scale control communication network, and to provide a plug-and-play-based CAN bus-based distribution system with the advantages of simple structure, convenient and quick use, high reliability, and easy maintenance. layer control tree network

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  • Layer control tree-shape network based on CAN bus for supporting plug and use

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] In Fig. 1, based on the requirements of ≤110 and contact points required by the electrical characteristics of the CAN bus network, the large-scale layered network is a tree structure, which is called a CAN tree. The root node 1 of the CAN tree is the general control terminal of the layered network, which plays a role in managing the entire network and can maintain the communication node address information of the entire system. The network topology of the entire CAN tree is a 2-layer structure—the parent layer 2 and the sub-layer 3 network. Each layer independently forms multiple arbitration domains. The layers are interconnected by CAN bridges 4. The parent layer 2 is divided into several network segments. Each network segment is provided with a CAN bridge 4, and each CAN bridge 4 is connected to a sublayer 3, and each sublayer 3 is further divi...

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Abstract

A hierarchical control tree-network supporting plug and play based on CAN bus is featured as dividing CAN bus network to be at least two layers for forming tree-network of hierarchical control, setting root node at father layer and using it as general control end of network, setting multiple independent arbitration domain at each layer, dividing father layer to be a numbers of network sections with a CAN network bridge on each section being connected with a sub layer, dividing sub layer to be a numbers of network sections being down- connected with a local application.

Description

technical field [0001] The invention relates to the field of a communication control network, in particular to a layered control tree network based on a CAN bus that supports plug and play. Background technique [0002] CAN2.0 bus technology is widely used in the field of communication control because of its real-time, reliability and low cost. However, because the relationship between each node of the CAN control network is equal, there is no concept of hierarchy, and CAN technology itself cannot adapt to a large-scale multi-layer communication control network with a large number of control nodes and complex node relationships. At present, the communication traffic of a large-scale distributed control network has the characteristics of large intra-layer traffic and small inter-layer traffic, especially in the sub-station of the control network, the communication traffic is huge, and these traffics often do not need to be transmitted outside the sub-station . If the contro...

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Application Information

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IPC IPC(8): H04L12/44H04L12/56H04L12/24
Inventor 房金民邵增珍陈达理
Owner 山东富臣发展有限公司
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