Counting LDA signal processor and its application

LIU Chang-wen; LUO Shi-jin; LIU Jie; WANG Shi-kang

doi:null

您当前的位置：

首页 >

文章列表页 >

Counting LDA signal processor and its application

更新时间：2020-08-12

- Counting LDA signal processor and its application
- Optics and Precision Engineering Vol. 12, Issue 6, Pages: 581-586(2004)
- 作者机构：
  
  1. 天津大学, 机械工程学院天津,300072
  2. 天津大学, 无线电厂天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.73
- Received：22 April 2004，
  
  Revised：15 September 2004，
  
  Published Online：15 December 2004，
  
  Published：15 December 2004
- 稿件说明：
移动端阅览
刘昌文, 罗诗金, 刘杰, 王仕康. 计数型激光测速仪信号处理器及其应用研究[J]. 光学精密工程, 2004,(6): 581-586

LIU Chang-wen, LUO Shi-jin, LIU Jie, WANG Shi-kang. Counting LDA signal processor and its application[J]. Editorial Office of Optics and Precision Engineering, 2004,(6): 581-586
刘昌文, 罗诗金, 刘杰, 王仕康. 计数型激光测速仪信号处理器及其应用研究[J]. 光学精密工程, 2004,(6): 581-586 DOI：

LIU Chang-wen, LUO Shi-jin, LIU Jie, WANG Shi-kang. Counting LDA signal processor and its application[J]. Editorial Office of Optics and Precision Engineering, 2004,(6): 581-586 DOI：

摘要

讨论了计数型多普勒信号处理器

着重介绍计数型信号处理器的工作原理

及各主要硬件部分的构成原理和具体结构.其主体部分采用包括集成计数器、存储器、比较器为主的全硬件设计

具有响应快和精度高的特点.通过合理设计闪烁包络检测单元、计数器主体部分和计数有效性判别电路

既增强了处理器的噪声适应能力

进一步提高了仪器的处理速度.并应用于双锥水力旋流器内部流场的研究

证实了零轴向速度包络面将流场分为内外旋流区的特点

得到了包络面为一柱锥联合面及其与旋流器结构参数之间的关系.

Abstract

A practical LDA signal processor based on the burst counting technique is presented

focusing on its working principle

hardware system and detailed construction. The processor is constructed by the common integrated circuits functioning as counter

memory

comparator and logic. The Doppler frequency related to the velocity being measured is extracted out all by hardware

so fast response can be achieved with high accuracy. Optimized design of three main parts for constructing the instrument

the burst generator which detects particles passing through the measurement volume

the counter core which obtains the period of Doppler signal and the counting validation analyzer

increase the capability of noise rejection as well. An application of the processor in the measurement of tangential and axial velocity distributions inside a hydraulic cyclone is given. The results show that the locus of zero vertical velocity

which divides the flow field into outer eddy area and inner eddy area

of the double-cone hydrocyclone is a compound surface of a cylinder and a cone

which is related to the construction parameter of the cyclone.

关键词

Keywords

references

YEH Y,CUMMINS H Z. Localized fluid flow measurements with on He-Ne laser spectrometer[J] . Appl. Phys. Lett., 1964,4(10):176-178.

王仕康,沈熊.激光多普勒技术[M] .北京:清华大学出版社,1985.WANG SH K,SHEN X. Laser doppler technology[M] . Beijing: Tsinghua University Press ,1985.(in Chinese)

沈熊,张松.激光测速数字相关信号处理器的研制[J] .实验力学, 1998,13(3):194-201.SHEN X, ZHANG S. A digital correlation signal processor used in LDV system[J] . Journal of Experimental Mechanics, 1998,13(3):194-201.(in Chinese)

刘昌文,路绯.一种基于PC微机的新型激光多普勒信号处理器研究[J] .光学精密工程, 2002,10(2):130-134.LIU CH W, LU F. Investigation on a laser doppler anemometry signal processor based on PC[J] . Optics and Precision Engineering, 2003,10(2):130-134.(in Chinese)

蒋明虎,王尊策.结构及操作参数对旋流器切向速度场的影响[J] .石油机械, 1999,27(2):16-18.JIANG M H, WANG Z C. Effects of structural and operating parameters on tangent velocity field of Hydrocyclone[J] . China Petroleum Machinery, 1999,27(2):16-18.(in Chinese)

蒋明虎,王尊策.旋流器轴向速度分布规律[J] .石油机械,1999,27(3):17-19.JIANG M H, WANG Z C. Distribution pattern of axial velocity of hydrocyclone[J] . China Petroleum Machinery, 1999,27(3):17-19.(in Chinese)

蒋明虎,赵立新.注聚采出水脱油用水力旋流器机理及实验研究[J] .石油机械,1998,26(8):14-16.JIANG M H, ZHAO L X,et al. Mechanism of hydrocyclone for oil water separation of produced water in polymer injection[J] . China Petroleum Machinery,1998,26(8):14-16.(in Chinese)

李恩帮,刘昌文.智能计数-跟踪型激光多普勒测速仪研究[J] .仪器仪表学报, 1995,16(2):198-200.LI E B, LIU CH W. Investigation on intelligent laser doppler anemometry with combination of tracking and counting[J] . Chinese Journal of Scientific Instrument,1995,16(2):198-200.(in Chinese)

刘昌文,刘杰.油水两相分层流流动速度分布的激光诊断[J] .流体力学实验与测量, 2000,14(2): 83-87.LIU CH W, LIU J. Laser diagnosis of velocity profile in oil-water stratified flow[J] . Measurements in Fluid Mechanics, 2000,14(2):83-87.(in Chinese)

Views

547

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176855 Email：gxjmgc@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰