Field programmable gate array (FPGA) and advanced RISC machine (ARM)-based data transmission method and system

Abstract

The invention relates to a field programmable gate array (FPGA) and advanced RISC machine (ARM)-based data transmission method and an FPGA and ARM-based data transmission system. According to the system, a parallel bus mechanism is used for transmitting data. The system comprises a data acquisition module, an FPGA module, an off-chip cache module and an ARM control module, wherein the FPGA module comprises an off-chip cache controller, an FPGA processor and a two-way dual-clock on-chip cache unit. The data transmission method comprises the following steps that: the data acquisition module transmits acquired data to a data acquisition and cache unit of the FPGA module; the off-chip cache controller reads the data from the data acquisition and cache unit, and transmits the data to the off-chip cache module for storage; the off-chip cache controller reads the data from the off-chip cache module, and transmits the data to the on-chip cache unit for storage; and the ARM control module reads the data from the off-chip cache module under the control of a built-in storage controller of the ARM control module to realize data communication with the FPGA module. The acquired data can be transmitted to an upper computer at high speed in real time, and the requirements of application fields of ultra high-voltage corona current source data transmission and the like are met.

Description

technical field [0001] The present invention relates to a data transmission method and system, in particular to a data transmission method and system based on FPGA and ARM that can be used to transmit corona current data of UHV lines. Background technique [0002] The rapid development of power grid construction requires high-level voltage transmission technology. UHV DC transmission projects play an important role in long-distance and large-capacity transmission projects due to their advantages such as large capacity, low loss, long transmission distance, and non-synchronized grid operation problems. status. To develop UHV transmission technology, it is necessary to study the corona characteristics of UHV transmission lines and equipment. At present, there are few research projects on corona source effect measurement of UHV transmission lines in my country, and most of the relevant calculations of UHV corona effects refer to foreign countries. related data. However, most f...

AI Technical Summary

Problems solved by technology

At present, the measurement sampling of corona current in the existing technology is usually below the low frequency of 2MHz, and the measurement performance is far from meeting the needs of UHV transmission technology research

On the other hand, the low-speed data transmission method based on single-chip microcomputer in the prior art cannot meet the reliability of data transmission of UHV corona current source

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