光通信技术
光通信技術
광통신기술
OPTICAL COMMUNICATION TECHNOLOGY
2010年
2期
55-57
,共3页
视频成像测井%光缆传输%FPGA%数据恢复%过采样%曼彻斯特解码
視頻成像測井%光纜傳輸%FPGA%數據恢複%過採樣%曼徹斯特解碼
시빈성상측정%광람전수%FPGA%수거회복%과채양%만철사특해마
video imaging well logging%fiber-optic cable transmission%FPGA%data recovery%over sampling%Manchester decode
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.
文章描述瞭一種基于FPGA實現的井上電路.該電路基于光纜傳輸機製,採用光模塊完成光電轉換,在FPGA內實現高速串行數據的數據恢複和曼徹斯特解碼等處理,經視頻模塊處理後,完成對井下視頻信息的恢複.其中,高速串行數據的數據恢複採用瞭過採樣的處理方法.該電路結構簡單、可靠性較高,與井下電路配閤使用,可實現井下視頻信號的可靠採集.
문장묘술료일충기우FPGA실현적정상전로.해전로기우광람전수궤제,채용광모괴완성광전전환,재FPGA내실현고속천행수거적수거회복화만철사특해마등처리,경시빈모괴처리후,완성대정하시빈신식적회복.기중,고속천행수거적수거회복채용료과채양적처리방법.해전로결구간단、가고성교고,여정하전로배합사용,가실현정하시빈신호적가고채집.
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.
