基于FPGA的HDB3编码方法及其在测井电缆传输中的应用研究  

Research on HDB3 Coding Technique Based on FPGA and Its Application in Data Transmission of Logging Cable

作　　者：李丰波[1] 鞠晓东[1] 卢俊强[1] 

机构地区：[1]中国石油大学油气资源与探测国家重点实验室,北京102249

出　　处：《测井技术》2010年第3期266-270,共5页Well Logging Technology

基　　金：国家自然科学基金重点项目(10534040);国家自然科学基金面上项目(40574049;40874097);高等学校博士学科点专项科研基金(20070425028);油气资源与探测国家重点实验室开放基金(PRPDX2008-08)资助

摘　　要：通过分析电缆测井数据传输中常用的编码技术以及HDB3编码的原理和优势,提出应用HDB3编码技术实现测井数据传输的设想。设计中以FPGA为核心部件,实现编译码以及与PC机的数据交互。分析了编译码模块的原理和尽可能优化的设计方法,以及PC端软件的功能和实现方法。该设计具有较好的扩展性和冗余性,可用于在数据压缩处理、数字滤波以及时域均衡处理等方面对该编码传输技术进行更为深入的研究。Experimental facility used for researching data transmission of wireline logging system based on HDB3 coding technique is designed. By analyzing common coding techniques in data transmission of wireline logging system as well as HDB3 code and its advantages, put forward are the ideas to implement the data transmission of logging cable by HDB3 coding technique. The design is based on FPGA to achieve coding and decoding as well as data interaction with PC. Principles of coding and decoding modular are analyzed as well as better design method , and the function and implement method of PC software is introduced. The design has expansibility and redundancy, so as to further study practical data compression, digital filtering, time domain equalization, etc.

关 键 词：测井电缆 数据传输 三阶高密度双极性码 现场可编程门阵列 编码 

分 类 号：TP132[自动化与计算机技术—控制理论与控制工程] P631.83[自动化与计算机技术—控制科学与工程]