文章摘要
张铮,贺洪斌,辛鹏来.随钻声波测井仪控制采集电路的优化设计与实现[J].声学技术,2016,35(2):180~187
随钻声波测井仪控制采集电路的优化设计与实现
The optimized design and realization of acquisition control circuit for acoustic logging while drilling tool
投稿时间:2015-03-17  修订日期:2015-05-25
DOI:10.16300/j.cnki.1000-3630.2016.02.017
中文关键词: 随钻需求分析|数字信号处理器|现场可编程门阵列|优化设计
英文关键词: acoustic logging while drilling|requirement analysis|DSP|FPGA|optimized design
基金项目:国家自然科学基金资助项目(11125420)
作者单位E-mail
张铮 中国科学院声学研究所超声与物理探测实验室, 北京 100190 zhangzheng10@mails.ucas.ac.cn 
贺洪斌 中国科学院声学研究所超声与物理探测实验室, 北京 100190  
辛鹏来 中国科学院声学研究所超声与物理探测实验室, 北京 100190  
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中文摘要:
      从随钻声波测井的实际需要出发,针对作业环境、设计空间、传输速率以及信号特点等方面进行了需求分析,提出了一种适用于随钻声波测井仪采集控制系统的优化设计。该系统以数字信号处理器(Digital Signal Processor,DSP)为控制核心,以现场可编程门阵列(Field-Programmable Gate Array,FPGA)作为信号传输以及接口转换的桥梁,与外围功能芯片包括模拟与数字转换器、与非门闪存芯片(NAND FLASH)等进行通讯,完成相应的信号采集、控制、存储等功能。所设计的采集控制电路不但充分发挥了DSP数据处理功能强的优势,而且将FPGA控制时序精准、接口丰富的特点表现出来。最后经过上位机软件测试,得到了较好的效果,为实际随钻声波测井控制采集电路设计及实现提供了技术参考。
英文摘要:
      This paper proposes an optimized design of the acquisition control circuit for acoustic logging while drilling tool by analyzing the requirements in high temperature, high pressure, great noise interference and narrow space. This system is totally operated by DSP, and the FPGA on board plays a role of a bridge between signal transmission and interface conversion. Therefore, the peripheral chips, such as ADC and NAND FLASH, can communicate with the DSP to realize the functions of acquisition, control, storage and so on. This design highlights the advantage of data processing by DSP, and fully uses the characteristics of temporal precision and various interfaces by FPGA. As a result, the control precision is highly improved. Through the test of PC software, this optimally designed circuit obtains satisfying results, which gives a technical reference for practical acoustic logging while drilling.
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