Method and system for dynamic reconfiguration of communication network of industrial Ethernet
A communication network and dynamic reconfiguration technology, applied in the communication field, can solve problems such as waste of resources, and achieve the effects of avoiding waste, reducing overhead, and shortening reconfiguration time
Active Publication Date: 2019-07-26
SOUTHWEST UNIV
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Problems solved by technology
However, as the number of protocols increases, hardware resources and software resources will also increase exponentially, so this method causes a great waste of resources. Therefore, a new reconstruction method for industrial Ethernet communication networks is urgently needed. On the basis of being able to correctly identify the protocols in the current network and realize stable configuration, the speed of reconfiguration is improved and the waste of online resources is reduced at the same time
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[0042] The present invention will be further described below in conjunction with accompanying drawing and embodiment: figure 2 It is a schematic flow chart of the present invention.
[0043] like figure 1 and 2 As shown, in this embodiment, the following steps are included:
[0044]Step S1. Clearly divide the static area and the reconstruction area, and divide the FPGA into a static area and a reconstruction area. The static area includes a detection module, a reconstruction control module, a reconstruction host module, a protocol physical layer driver module, and a protocol application layer. Implementation and application module, the refactoring area is the data link layer implementation of EtherCAT and Powerlink protocol, in this embodiment, according to the protocol characteristics of EtherCAT and Powerlink, the consistency of the physical layer and the application layer is guaranteed, and only the data link layer is rebuilt structure;
[0045] Step S2. Reconstructing...
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The present invention provides a dynamic reconstruction method for a communication network of the industrial Ethernet, comprising: region division: dividing an FPGA into a static region and a reconstruction region, wherein the static region at least comprises a reconstruction host and a reconstruction control module; reconstruction identification: identifying a communication protocol in a current network; reconfiguration planning: mapping the identification result to a protocol type, to generate a protocol flag, and starting reconstruction if it is inconsistent with the current device protocol, to acquire a reconstruction configuration file; reconstruction configuration: configuring a mode of the FPGA, to establish an external dynamic configuration file library; and reconstruction evaluation: evaluating this reconstruction result by a master station device according to whether a reconstruction device can establish communications with a master station, to judge whether the reconstruction result meets the system requirements. The method provided in the present invention can correctly distinguish protocols in the network according to communicating Ethernet frames in the current network, thereby triggering reconstruction performed on the reconstruction region, shortening the time of single reconstruction, and reducing the overhead of online resources.
Description
technical field [0001] The invention relates to the communication field, in particular to a dynamic reconfiguration method and system of an industrial Ethernet communication network. Background technique [0002] Fieldbus technology has always been an important part of industrial control technology. With the rapid growth of field communication data volume and the difficulty of solving problems such as fieldbus interconnection, intercommunication and interoperability, fieldbus needs to seek new solutions. Ethernet has the characteristics of good openness, wide application, low price and high communication rate, but the CDMA / CD (Carrier Sense Multiple Access / Collision Detection) mechanism it adopts brings transmission delay. Uncertainty cannot meet the real-time requirements of industrial networks. In order to apply it to the industrial field, it must be transformed. Major businesses have proposed their own industrial Ethernet and given real-time technical solutions. [0003]...
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IPC IPC(8): H04L29/06
CPCH04L69/18
Inventor 黄伟赵亦欣何飞夏吴斌
Owner SOUTHWEST UNIV