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Method for multi-channel high-speed communication between internal plug-ins of a digital fault recording device

A fault recording device and multi-channel technology, applied in the direction of general-purpose stored-program computer and architecture with a single central processing unit, can solve the problems of no USB interface and achieve fast communication speed, long communication distance and small size

Inactive Publication Date: 2019-05-17
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because CPUs and programmable logic chips usually do not have a large number of USB interfaces with high performance, USB interfaces are rarely used.

Method used

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  • Method for multi-channel high-speed communication between internal plug-ins of a digital fault recording device
  • Method for multi-channel high-speed communication between internal plug-ins of a digital fault recording device
  • Method for multi-channel high-speed communication between internal plug-ins of a digital fault recording device

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Experimental program
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Embodiment Construction

[0025] Such as image 3 As shown, the fault recording device is configured to record 24 channels of 100M network signals and 2 channels of Gigabit network signals.

[0026] Because it needs to record a large number of network signals and a large amount of information, four data acquisition plug-ins are configured. The first three data acquisition plug-ins are equipped with 8-way 100M network signals, and the fourth data acquisition plug-in is equipped with 2-way Gigabit network signals.

[0027] The first three data acquisition plug-ins have the same design. Each data acquisition plug-in is designed with 4 pairs of BLVDS, and the theoretical maximum speed is 2 megabits per second. Considering the coding efficiency and response, the actual communication speed is 1.2 megabits per second. The fourth data acquisition plug-in is designed with 8 pairs of BLVDS, and the theoretical maximum speed is 4 megabits per second. Considering the coding efficiency and response, the actual ...

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Abstract

The invention relates to the field of digital fault recording devices of power systems. The digital fault recording device is composed of a plurality of data acquisition plug-ins, a data processing plug-in and a management unit. According to the invention, one data processing plug-in and one to four data acquisition plug-ins are designed in one box body. And at most 32 pairs of BLVDS high-speed differential signal channels which are in one-to-one connection are arranged between the data processing plug-in and each data acquisition plug-in. Anti-interference coding, scrambling code coding and decoding and response feedback are adopted for communication to ensure correct communication. And the highest communication speed of each pair of BLVDS signals reaches 500 megabits per second. And theBLVDS can bidirectionally transmit signals. And each of the data processing plug-in and each data acquisition plug-in comprises a programmable logic chip. The data processing plug-in is provided with4-32 BLVDS channels, and each data acquisition plug-in is connected with 1-8 BLVDS channels. In order to realize the communication function, only a small amount of programmable logic chip resources need to be occupied. The design has the advantages of high communication speed, more communication channels, less occupied resources, flexible configuration of the digital fault recording device and lowcost.

Description

technical field [0001] The invention relates to the field of digital fault recording devices for power systems, and in particular to how to design the communication between plug-ins inside the digital fault recording device so that the communication speed is higher, the communication channels are more, and the resource occupation is less. Background technique [0002] Such as figure 1 As shown, the digital fault recorder needs to connect several network signals. These network signals come from merging units (MUs) or from network switches in substations. In individual cases, the digital fault recorder may also exchange a small amount of data with special equipment. The digital fault recorder consists of several data acquisition plug-ins, one data processing plug-in and one management unit. The data collection plug-in collects the above-mentioned network signals, and may preliminarily process other individual signals in individual cases. The data processing plug-in complet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F15/78
Inventor 夏瑞华俞子聪张泉田源李翔宇朱永强
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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