The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
Investigation of Multi-channel High-precision Phase Detecting Technology
Author(s): 
Pages: 189-190
Year: Issue:  2
Journal: WELL LOGGING TECHNOLOGY

Keyword:  相位检测复电阻率可编程逻辑器件仿真模拟;
Abstract: 复电阻率相位检测技术是目前复电阻率测井技术发展的方向.实验研究表明,复电阻率的相位变化与岩心的饱和度有很好的线性关系,但变化范围只有1°~4°,因此要求相位检测的精度要低于1%.应用CPLD技术实现了微小相位信号的高精度检测,应用数字可编程器件实现了100MHz频率下的相位检测.详细介绍了检测系统的组成和测量方法,并给出了软件模拟和硬件测试结果.实验结果表明,4.5 kHz频率时测量系统能够达到相对误差0.8%的精度要求,能够满足复电阻率相位检测要求的精度.
Related Articles
No related articles found