Virtual connection supporting real-time embedded gateway based on controller area network (CAN) bus and Ethernet

Abstract

The invention discloses a virtual connection supporting real-time embedded gateway based on a controller area network (CAN) bus and Ethernet. The real-time embedded gateway comprises hardware, a supporting module and a virtual connection module. A plurality of embedded development boards simultaneously with CAN bus interfaces and Ethernet interfaces are adopted, and are connected by the CAN bus to form a virtual connection service supporting trunking system. The supporting module of the gateway consists of a driver, a mu c-OS II operating system and a light weight Internet protocol (LWIP) protocol stack. The virtual connection module comprises a virtual connection protocol sub-module and a virtual connection state sensing sub-module, and is used for finishing actual virtual connection forwarding and maintenance work. The real-time embedded gateway has the advantages of configuration flexibility, high adaptability, high extensibility, low energy consumption and the like, and is applied to data acquisition and transmission systems of relatively larger scales.

Description

technical field [0001] The invention relates to a gateway, in particular to a real-time embedded gateway based on CAN bus and Ethernet supporting virtual connection, which belongs to the field of industrial control. Background technique [0002] In the 30 years since its birth, Ethernet has become the leading technology of local area network (LAN) due to its simplicity, high speed, and easy expansion. With the update of applications and requirements, the applicable field of Ethernet is also constantly expanding. In particular, the application of Ethernet in the industrial field has been proposed by some distributors (such as Siemens) as early as the IEEE standardized Ethernet, and now it has become the focus of current research. Compared with Field Bus, the dominant transmission technology in the traditional industrial field, Ethernet has the advantages of high bandwidth, easy expansion, and flexible networking, but it also has unreliable, non-real-time, and irregular traff...

AI Technical Summary

Problems solved by technology

[0005] The technology of the present invention solves the problem: aiming at the problems existing in the current CAN-Ethernet architecture, a real-time embedded gateway based on CAN bus and Ethernet that supports virtual connections is provided to realize a clustered real-time embedded gateway that supports virtual connections to solve Real-time and reliable transmission of large-scale data; on this basis, system optimization functions such as priority scheduling are added

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