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M-LVDS bus-based real-time and efficient data transmission method

A data transmission method and bus technology, applied in the field of communication, can solve the problems of unguaranteed real-time performance of key data, bottleneck of overall performance of equipment, insufficient adaptability of bus, etc. The effect of transfer efficiency

Active Publication Date: 2019-06-25
DONGFANG ELECTRONICS
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AI Technical Summary

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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  • M-LVDS bus-based real-time and efficient data transmission method
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Embodiment Construction

[0033] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0034] This embodiment is an intelligent busbar protection device used in power system substations. The rear view of the main unit is as follows: figure 1 shown. The device consists of two chassis, the host and the slave, each of which is equipped with several boards, and all the data of the slave communicates with the COM board of the host through optical fiber. This example is described in conjunction with the M-LVDS bus communication between the boards configured by the host.

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

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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 and high-efficiency data transmission method based on an M-LVDS (Multipoint Low Voltage Differential Signaling) bus, which is suitable for embedded products in power systems. Background technique [0002] With the rapid development of smart grid technology in power systems, a large number of intelligent electronic devices are used in all aspects of power generation, transmission, transformation, power distribution and power consumption. Most of these intelligent electronic devices are embedded products. The functions of the products 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, from a single smart board to multiple smart boards. A large amount of data exchange is required between time and processors. [0003] The M-LVDS bus has been g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 徐广飞姚利华
Owner DONGFANG ELECTRONICS
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