基于FPGA的全谱岩性密度数据采集系统  

A Full-spectrum Litho-density Data Acquisition System Based on FPGA

作　　者：彭晓光[1] 田彦民[1] 柏林[1] 付广[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《核电子学与探测技术》2012年第7期758-761,共4页Nuclear Electronics & Detection Technology

摘　　要：设计了一种基于FPGA(现场可编程逻辑器件)的全谱岩性密度数据采集系统,该系统能够在测井过程中对核脉冲信号进行全谱采集,可形成完整谱图,提供更多的地层信息,满足用户需要。该系统基于FPGA设计,用于数据采集和数据处理。为保证探测精度设计了脉冲调理电路,同时配合使用高速AD进行数字量化,采用双端口RAM技术保证数据传输的实时性。通过Modelsim仿真和板级测试,系统测得谱图准确,运行稳定,可广泛应用于生产测井。The paper introduces a new full- spectrum lithology density data acquisition system. It is capable to collect full spectrum data during well logging. This data acquisition system can generate a complete spectrogram, and provide more stratum information to satisfy users＇needs. The logging tool is mainly based on field programmable logic device （ FPGA）, which is practical for data collecting and processing. The pulse conditioning circuit is designed to ensure the accuracy of detection. In order to ensure real - time data transmission, the dual port RAM is applied with the use of the high - speed AD, which is applicable for data quantizing. This new full -spectrum lithology density data acquisition system can be widely used in well logging industry because the spectrogram is accurate and the system operation is stable after simulation experiments in Modelsim and board testing.

关 键 词：全谱 岩性密度 现场可编程逻辑器件 核脉冲 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]