岩性密度测井仪固定高压稳谱的实现  

Realization of Litho-density Logging Tool’s Spectrum Stabilization by Fixing High-voltage

作　　者：卢进[1] 田彦民[1] 付广[1] 张建军[1] 吕海泉[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：《舰船防化》2012年第1期35-38,共4页

摘　　要：在传统岩性密度测井仪的设计中,为了补偿探测器老化、不同工作条件、特别是测井作业时的温度等因素引起的探测器增益变化,常规方法是利用谱误差控制信号控制自动高压控制系统,以稳定探测器增益。本文介绍了一种新的稳谱方法:利用四窗口稳谱和可控增益放大器对系统进行增益控制,并使用固定的高压,从而达到稳谱的目的。新方法简化了仪器的设计,提高了仪器的可靠性、维修性等技术性能。In traditional litho-density logging tool, in order to compensate the gain variations of detector caused by some effectors such as instrument aging, deferent working condition, especially the working temperature, the general method is using spectrum error control signal to control automatic HV control system so as to stabilize the detector gain. A new method is described in this article： Four windows spectrum stabilization and a controllable gain amplifier is used for system gain control and fixed HV is used, so as to achieve the purpose of making spectrum stable. This new method has simplified the instrument design, and improved the performance such as reliability, maintainability and so on.

关 键 词：岩性密度测井仪 光电倍增管 可控增益放大器 稳谱 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]