Switching device of IP network interface and CAN bus interface

A CAN bus and interface conversion technology, which is applied in the field of IP network interface and CAN bus interface conversion device, can solve the problems such as the inability of bus devices to perform data communication, the influence of system expansion or information compatibility, and the incompatibility of long-distance transmission. The effect of rate conflict, data integrity, and protocol reliability

Inactive Publication Date: 2015-01-28
SICHUAN MIANYANG SOUTHWEST AUTOMATION INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CAN bus is also a widely used field bus. It has the advantages of good real-time performance. It is widely used in automobiles and other transportation tools, industrial control, intelligent buildings, machinery industry, medical equipment, sensors and other fields. It is called the most One of the promising field buses, but its main disadvantage is that it is not suitable for long-distance transmission
However, due to the different communication protocols between Ethernet and CAN bus, data communication cannot be performed between the two bus devices, which affects system expansion or information compatibility

Method used

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  • Switching device of IP network interface and CAN bus interface
  • Switching device of IP network interface and CAN bus interface
  • Switching device of IP network interface and CAN bus interface

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Embodiment Construction

[0016] figure 1 It is a schematic diagram of the connection of the conversion device components of the present invention, in figure 1 Among them, the conversion device of the present invention includes an Ethernet interface 111, an Ethernet controller 121, a CPU 131, a photocoupler 141, optocoupler 142. CAN interface 151. CPU131 is connected with Ethernet controller 121, and Ethernet controller 121 is connected with Ethernet interface 111, and CPU131 respectively passes photocoupler 141, photocoupler 142 is connected with CAN interface 151 . Ethernet interface 111, Ethernet controller 121, CPU131 carry out Ethernet data communication, CPU131, optocoupler 141, optocoupler 142. The CAN interface 151 performs CAN data communication. The required clock synchronization signal is required between the Ethernet interface 111 and the Ethernet controller 121 to complete the synchronous transmission of data. The communication between the Ethernet controller 121 and the CPU...

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Abstract

The invention provides a switching device of an IP network interface and a CAN bus interface. The switching device comprises an Ethernet interface, an Ethernet controller, a CPU, a CAN controller and a CAN interface. Interface compatibility is realized through a bus interface switching circuit and an interface software design, interface switching is controlled through a single-chip microcomputer, control over Ethernet data receiving and transmission is realized through the Ethernet interface and the Ethernet controller, and control over CAN bus data receiving and transmission is realized through the CAN controller and the CAN interface. The switching device of the IP network interface and the CAN bus interface can realize communication switch between the Ethernet and a CAN bus, and realize information interaction of two systems with different communication protocols and communication interfaces.

Description

technical field [0001] The invention relates to a conversion device between an IP network interface and a CAN bus interface. The device can realize the communication conversion between the Ethernet and the CAN bus, and solve the problem of information interaction between the two systems with different communication protocols and communication interfaces. Background technique [0002] At present, the bus network has been widely used in the field of information control. IP-based Ethernet is a commonly used information network interface, which has the advantages of long transmission distance and high transmission bandwidth. With the improvement of transmission rate and the use of switching technology, the determinism and real-time performance of Ethernet are guaranteed, and the security and network survivability of industrial Ethernet are also greatly improved, making it widely used in the field of industrial control. Wide range of applications. CAN bus is also a widely used...

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Application Information

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IPC IPC(8): H04L29/10
CPCH04L49/9063H04L12/40032H04L12/40097
Inventor朱松柏刘治红陈涛王钤
OwnerSICHUAN MIANYANG SOUTHWEST AUTOMATION INST