Intelligent data repeater based on CAN bus technology

Abstract

The invention discloses an intelligent data repeater based on the CAN bus technology. The repeater comprises a CPU, a RAM, a ROM, a clock module, a man-machine interface, a serial port, an Ethernet port, a CAN interface module and a CAN bus, wherein the RAM, the ROM, the clock module, the man-machine interface, the serial port, the Ethernet port and the CAN interface module are in communication connection with the CPU, and the CAN interface module is connected with the CAN bus. By adopting the communication speed adaptive technology, speed matching for an input communication port mounted on a gateway can be automatically achieved. Through port mapping, CAN networks of different ranges and categories can be connected together or the CAN bus and the Ethernet can be connected together so as to achieve gateway functions of different networks. Input CAN bus data can be unpacked and analyzed so as to extract the data, and the extracted data can be forwarded to another CAN bus according to a preset configuration. When a PC is needed for CAN bus intelligent data forwarding, web access modes can be provided so as to achieve good man-machine interaction and make operation more convenient to carry out.

Description

technical field [0001] The invention relates to a data transponder, in particular to an intelligent data transponder based on CAN bus technology. Background technique [0002] CAN (Controller Area Network, CAN) bus is a kind of field bus, which is a serial communication bus with high performance, high reliability, easy development and low cost. Currently widely used in industrial automation, transportation, medical and other fields. Due to the wide application of CAN bus, corresponding products emerge in endlessly. In different systems, their communication rates are often different, and direct data transmission cannot be performed between different communication rates. At the same time, due to the limited address space in a CAN network, when two different networks need to communicate, address conflicts may occur, so that the required point-to-point data transparent communication cannot be realized. As a result, traditional CAN gateway and other technologies cannot break t...

AI Technical Summary

Problems solved by technology

At the same time, due to the limited address space in a CAN network, when two different networks need to communicate, there may be address conflicts, so that the required point-to-point data transparent communication cannot be realized

This makes traditional CAN gateway and other technologies unable to break through the bottleneck of unified data transmission rate, and cannot realize the correct analysis of communication data in the CAN bus protocol and proper packaging and forwarding of CAN bus data to achieve the purpose of transparent data transmission

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