视频成像测井光缆传输系统井上电路设计

文章描述了一种基于FPGA实现的井上电路.该电路基于光缆传输机制,采用光模块完成光电转换,在FPGA内实现高速串行数据的数据恢复和曼彻斯特解码等处理,经视频模块处理后,完成对井下视频信息的恢复.其中,高速串行数据的数据恢复采用了过采样的处理方法.该电路结构简单、可靠性较高,与井下电路配合使用,可实现井下视频信号的可靠采集.

Design of an up hole circuit for well logging system of video imaging fiber-optic cable transmission

In this paper, an up-hole circuit based on FPGA in Video imaging well logging system was de-scribed. This circuit which been based on fiber-optic cable transmission mechanism, employed optical transceiver as conversion element between optical signal and electrical signal and FPGA as high speed serial data recovery by over sampling and Manchester decoder element, was reestablished the video signal of down-hole by video module. Cooperated with the down-hole circuit, the circuit which is simple and reliable can realize reliable video signal acquisition of down-hole.