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基于CPLD的高性能自然伽马能谱测井仪的研制
引用本文:李会银,鞠晓东,成向阳,王汝泉.基于CPLD的高性能自然伽马能谱测井仪的研制[J].西安石油大学学报(自然科学版),2005,20(2):72-76.
作者姓名:李会银  鞠晓东  成向阳  王汝泉
作者单位:1. 石油大学,地球资源与信息学院,山东,东营,257061
2. 石油大学,地球资源与信息学院,北京,102249
3. 中国石化集团,胜利测井公司,山东,东营,257061
基金项目:中国石油化工集团公司科学研究与技术开发项目(KZD21998005)
摘    要:研制了一种与成像测井高速遥传系统配接的高性能自然伽马能谱测井仪.该仪器由脉冲幅度分析、辅助参数采集、高压控制和传输接口组成.重点介绍仪器的设计方案和分析数字控制部件及软件的功能.脉冲幅度分析单元采用12位高速A/D转换器及基于CPLD的硬件成谱逻辑,脉冲处理速度接近A/D转换速率,明显优于国外同类仪器采用的软件处理方式.传输接口由一个下行命令通道和两个上行数据通道构成,采用曼彻斯特编码方式,可挂接到SL6000 及ECLIPS5700 成像测井系统.

关 键 词:自然伽马测井  复杂可编程逻辑器件  成像测井系统  数据传输
文章编号:1673-064X(2005)02-0072-05
修稿时间:2004年12月9日

Development of a high performance natural Gamma- ray spectrometry logging tool based on CPLD
LI Hui-yin,JU Xiao-dong,CHENG Xiang-yang,WANG Ru-quan.Development of a high performance natural Gamma- ray spectrometry logging tool based on CPLD[J].Journal of Xian Shiyou University,2005,20(2):72-76.
Authors:LI Hui-yin  JU Xiao-dong  CHENG Xiang-yang  WANG Ru-quan
Institution:LI Hui-yin~1,JU Xiao-dong~2,CHENG Xiang-yang~2,WANG Ru-quan~3
Abstract:A high performance natural gamma-ray spectrometry logging tool is developed, and it is designed for the high-speed telemetry system of image logging unit. It is composed of pulse height analysis (PHA), auxiliary parameter acquisition, high voltage control and communication interface. Its design scheme, and the functions of its digital control components and software are mainly discussed. Its remarkable characteristic is to apply complicated programmable logical device (CPLD) for spectra forming, which makes its pulse-processing rate approach A/D convert rate. The software processing way is much better than that of the same type of tools abroad such as Baker Atlas's 1329XA. Its communication interface is composed of one command-channel and two data transmission channels. It uses Manchester code. It can be connected to the telemetry cartridge and operate with SL6000 image logging unit of Shengli Well-logging Company, or ECLIPS5700 of Baker Atlas. With military-grade devices being used, it has good temperature stability.
Keywords:natural gamma-ray spectrometry log  complicated programmable logical device  image logging unit  data transmission  
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