基于PCI总线的高精密时间间隔测量仪的研制  

High-precision Time Interval Measurement Instrument Based on PCI Bus

作　　者：宋健[1] 安琪[1] 刘树彬[1] 

机构地区：[1]中国科学技术大学近代物理系,合肥230026

出　　处：《电子测量与仪器学报》2006年第3期37-42,共6页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金资助课题(编号:10405023);中国科技大学研究生创新基金资助课题

摘　　要：在很多大型物理实验和应用中,对时间间隔测量的精度要求是越来越高。本文介绍了一种基于PCI总线的高精密时间间隔测量仪的实现,该测量仪具有内部自检、通道识别及掉电保护等功能;并说明了该测量仪的多项关键技术,尤其是延时锁相环加RC延迟线的两级时间内插技术;最后给出了该测量仪的性能指标。测量结果显示,该测量仪可以达到21ps的测量精度,同时可以测量的时间范围是51us。In many large physics experiments and applications, the precision requirement of time interval measurement is higher and higher. This paper introduced the design of a high-precision time interval measurement instrument based on PCI bus. The instrument can implement system-check, channel-identification, and data-protection when system powers off, etc. Some pivotal technologies of the instrument are described, especially the delay locked loop and RC delay line time interpolator techniques. In the end, some parameters of the instrument are measured and given. The parameters of the instrument show that the resolution can reach 21 picosecond, and that the range of measurement is 51 microsecond at the same time.

关 键 词：时间间隔测量 时间数字转换器 PCI总线 虚拟仪器 

分 类 号：TH714[机械工程—测试计量技术及仪器] TP336[机械工程—仪器科学与技术]