基于FPGA的数字化光纤传输方案

针对复杂电力电子系统在实时控制和高隔离性能上的要求,提出了一种新颖高效的数字化光纤传输方案,以A/D转换器加现场可编程门阵列(FPGA)为简单架构,先将模拟信号数字化,再进行编码等数据处理,使信号能够通过光纤进行隔离传输,最后在光纤接收端将有效数字信号提取出来。该方案解决了复杂环境下系统对多路、多点采样数据实时性、可靠性及远距离传输的问题,其优点是系统稳定,误码率低,抗干扰能力好,实时性强。实验结果证明了该方案的可行性。

Digitized fiber-optic transmission scheme based on FPGA

A new and efficient scheme of digitized fiber-optic transmission was proposed to meet the real-time control in complex power electronic systems with high isolation demanding applications.In this scheme,an FPGA unit was used to processing and encoding sampled signals in ADC,and optical fiber was used to send signals to signal processing unit.At the end of fiber,another FPGA receiver unit recovered the original signals.The method is reliable for real-time multi-point sampling data transmission with long-distance under disturbing environments.The system has merits of stable and good real-time performance.Results of experiments verified the feasibility of this scheme.