一种多功能井下信号转换适配器的设计与应用  

Design and Application of a Multi-function Logging Signal Format Adapter

作　　者：罗明璋[1] 熊晓东[1] 陈宝 贺晓真 吴爱平[1] 朱斌 

机构地区：[1]长江大学电子信息学院,湖北荆州434023 [2]中国石油集团测井有限公司,陕西西安710077

出　　处：《测井技术》2013年第3期297-301,共5页Well Logging Technology

基　　金：国家973项目(项目编号:2007CB209607);国家自然科学基金项目(项目编号:40727001;40774073)资助

摘　　要：为实现不同生产厂家仪器的组合测井,经常需要设计各种不同的信号格式转换器。提出并实现了一种小体积、低功耗、多功能的信号适配器,实现PCM/DTB、PCM/CAN、DTB/CAN信号之间的转换。系统采用FPGA作为DTB总线的时序控制,集成CAN协议控制器的单片机C8051F060作为CAN总线驱动和PCM信号的软编解码。通过俄罗斯感应测井仪与中国石油集团测井有限公司研制的EILog快速与成像测井系统的挂接试验验证了系统设计的可靠性与优越性。It is necessary to design different kinds of signal format adapters to match the different series of logging instruments which are developed by different manufacturers. A signal adapter with little size, low power dissipation and multi-function is worked out, which achieves signal format convertion between PCM and DTB, PCM and CAN, DTB and CAN. The adapter uses FPGA of EPMT128 as time sequence control of DTB bus. The C8051F060 chip integrated CAN protocol controller is used as the core of PCM coding-decoding and the CAN bus driving. The adapter has been proved feasible and reliable by the experiments of matching the Russian HIL with EILog05 and EILog06 logging system developed by China Petroleum Logging CO. LTD.

关 键 词：测井仪器 组合测井 PCM DTB CAN 信号转换 

分 类 号：P631.81[天文地球—地质矿产勘探]