光纤电压互感器信号采集与通信接口设计

The signal acquisition and interface design of optical fiber voltage transformer

以NI7813R智能数据采集卡为核心,硬件上利用信号调理电路板、数据采集卡、计算机构建光纤电压互感器信号采集系统;软件上以LabVIEW作为编程工具,分别在FPGA和主机上设计FPGAVI和HOSTVI,在FPGA上对信号进行解调处理,在计算机上对采集数据进行实时显示与记录。为了满足数字化变电站网络化的需求,采集系统采用以太网接口输出,因此对以太网输出的硬件和软件设计进行了全面的论述,并在最后给出仿真结果。

Take NI7813R intelligent data acquisition card as the core, a optical fiber voltage transformer signal acquisition system is proposed; Using LabVIEW as programming tool, FPGA VI and HOST VI are designed in the FPGA and the host. The former is for the demodulation of the signal, while the latter is for data record- ing and real-time display. In order to satisfy the needs of network in digital substation, the acquisition system using Ethemet interface output, so a comprehensive exposition is given including hardware design, soft-ware design and finally the simulation results.