FPGA在馈电终端单元的应用

对于传统数据采集系统。由于每次采样占用DSP(Digital Signal Process)的时间，影响其数据处理及运算速度。在馈电终端单元的设计中。我们将FPGA(Field Programmable Gate Arrav)芯片与A／D芯片(MAXl25)相结合，实现成批数据的采集．并在同一FPGA芯片上实现了数字测频电路与系统控制电路。详述了上述功能的实现方法和仿真时序图。实验结果表明，在馈电终端单元中采用FPGA技术。降低了硬件外部连接的复杂程度,提高了系统的整体性能。

Application of feeder termination unit based on FPGA

In traditional data acquisition system, data processing and calculating speed of Data Signal Process may slow down as each data sampling may use the working time of DSP. In feeder termination unit designing, FPGA chip is combined with A/D chip(MAX125) to achieve data batch processing, and digital frequency measuring circuit and system control circuit are put together in the same FPGA chip. The achieving ways of FPGA function and emulation oscillograph are presented in the article. It is concluded that applying FPGA in feeder termination unit can simplify complexity of external hardware connection and improve integral system capability.