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A real-time and efficient data transmission method based on m-lvds bus

A data transmission method and bus technology, applied in the field of communication, can solve the problems of inability to guarantee the real-time performance of key data, insufficient bus adaptability, and overall performance bottleneck of equipment, so as to achieve real-time monitoring of communication status, improve bus utilization, and improve The effect of transfer efficiency

Active Publication Date: 2020-04-14
DONGFANG ELECTRONICS
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Problems solved by technology

The data transmission method based on the M-LVDS bus in the prior art has the following defects: the data types supported for transmission are less, the bus utilization rate is low, and the real-time performance of key data cannot be guaranteed, resulting in insufficient bus adaptability to varying degrees
However, the real-time transmission of GOOSE messages or the data carried inside the intelligent electronic device has become a bottleneck restricting the overall performance of the device.

Method used

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  • A real-time and efficient data transmission method based on m-lvds bus
  • A real-time and efficient data transmission method based on m-lvds bus

Examples

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Embodiment Construction

[0033] The technical solution of the present invention will be described in detail below in conjunction with the drawings:

[0034] This embodiment is an intelligent bus protection device used in a power system substation. The rear view of the host is as figure 1 Shown. The device is composed of a host computer and a slave computer. Each case is equipped with several boards. All data of the slave computer communicates with the host COM board through optical fiber. This example describes the M-LVDS bus communication between boards configured by the host.

[0035] Such as figure 1 , The device host is composed of MPU-B, DSP protection, DSP lock, COM, ETH-4, DI-B, CO-A, POWER-80W, a total of 8 boards, each board has a 96-pin terminal, plugged in On the bus board inside the device, various connecting lines are arranged on the bus board to interconnect the boards, including two M-LVDS buses. The slot position of each board from left to right is the board address of the board, and each ...

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Abstract

The invention discloses an M-LVDS bus-based real-time and efficient data transmission method. According to the method, an FPGA is adopted to perform data link control. The method is composed of communication node allocation, control right transmission, message transmission control, data classified and graded caching and error checking and retransmission. The method is especially suitable for information interaction between embedded intelligent electronic device board cards in a power system. The M-LVDS bus-based real-time and efficient data transmission method has the advantages of high bus utilization efficiency, high message real-time performance, and support for the transmission of multiple data types. With the method adopted, the range of the application of an M-LVDS bus to various intelligent electronic devices can be extended, and the requirements of various kinds of complex application can be met.

Description

Technical field [0001] The invention relates to a data transmission method in the communication field, in particular to a real-time high-efficiency data transmission method based on an M-LVDS (Multipoint Low Voltage Differential Signaling) bus suitable for power system embedded products. Background technique [0002] With the rapid development of smart grid technology in power systems, smart electronic devices are widely used in all aspects of power generation, transmission, transformation, distribution, and power consumption. Most of these smart electronic devices are embedded products. The product functions are getting stronger and higher and the performance is getting higher and higher. Many products have developed from a single processor to a multi-processor, and from a single smart board to a multi-smart board. A large amount of data exchange is required between processors and processors. [0003] The M-LVDS bus has gradually gained popularity due to its high speed, strong an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
Inventor 徐广飞姚利华
Owner DONGFANG ELECTRONICS
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