GB2039110A - Peak tracking correlator - Google Patents

Peak tracking correlator

Info

Publication number
GB2039110A
GB2039110A GB8002114A GB8002114A GB2039110A GB 2039110 A GB2039110 A GB 2039110A GB 8002114 A GB8002114 A GB 8002114A GB 8002114 A GB8002114 A GB 8002114A GB 2039110 A GB2039110 A GB 2039110A
Authority
GB
United Kingdom
Prior art keywords
tracking
peak
coarse
detector
integrator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8002114A
Other versions
GB2039110B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sybron Transition Corp
Original Assignee
Sybron Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sybron Corp filed Critical Sybron Corp
Publication of GB2039110A publication Critical patent/GB2039110A/en
Application granted granted Critical
Publication of GB2039110B publication Critical patent/GB2039110B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions
    • G06G7/1928—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming correlation integrals; for forming convolution integrals
    • G06G7/1935—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming correlation integrals; for forming convolution integrals by converting at least one the input signals into a two level signal, e.g. polarity correlators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/712—Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/15—Correlation function computation including computation of convolution operations

Abstract

Apparatus for tracking the peak of a correlation function between two signals (x(t),y(t)) includes a coarse peak detector (26) for providing a coarse measure of the peak position and a tracking correlator for providing a fine indication of the peak once its tracking range has been set by the coarse detector. The preferred tracking correlator includes a word controlled shift register (25) whose length is controlled by a signal (Np) from the coarse detector (26) thereby setting the tracking range. A delay-lock-loop including a multiplier (16), smoothing circuit (18), integrator (19) and voltage controlled oscillator (20) achieves a stable state when the clock frequency (F<uc>u) of the register (25) produces a null at the input to the integrator (19). A preferred use of the apparatus is as a flowmeter.
GB8002114A 1978-05-25 1979-05-24 Peak tracking correlator Expired GB2039110B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2280078 1978-05-25

Publications (2)

Publication Number Publication Date
GB2039110A true GB2039110A (en) 1980-07-30
GB2039110B GB2039110B (en) 1982-11-17

Family

ID=10185261

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8002114A Expired GB2039110B (en) 1978-05-25 1979-05-24 Peak tracking correlator

Country Status (8)

Country Link
EP (1) EP0019618A1 (en)
JP (1) JPS55500512A (en)
CA (1) CA1114511A (en)
DE (1) DE2952812A1 (en)
FR (1) FR2476351A1 (en)
GB (1) GB2039110B (en)
IT (1) IT7922990A0 (en)
WO (1) WO1979001119A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61207973A (en) * 1985-03-13 1986-09-16 Mitsubishi Electric Corp Correlation type time difference meter
US4729109A (en) * 1985-05-29 1988-03-01 University Of Illinois Method and apparatus for measuring the displacements of particle images for multiple exposure velocimetry
DE3633769A1 (en) * 1986-10-03 1988-04-14 Endress Hauser Gmbh Co DIGITAL CORRELATOR
FI87493C (en) * 1991-12-23 1993-01-11 Kytoelae Instrumenttitehdas OVER ANCHORING FOR OVER MAINTENANCE AV STROEMNINGSHASTIGHETEN AV GASER OCH / ELLER STORHETER SOM KAN HAERLEDAS FRAON DENNA
GB2327761A (en) * 1997-07-28 1999-02-03 Pcme Limited Velocity measurement
US7424366B2 (en) * 2005-08-27 2008-09-09 Schlumberger Technology Corporation Time-of-flight stochastic correlation measurements
US9222817B2 (en) * 2013-03-15 2015-12-29 Amphenol Thermometrics, Inc. Systems and methods for hybrid flow sensing

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982114A (en) * 1961-08-28 1976-09-21 Trw Inc. Signal processing system
FR2041579A5 (en) * 1969-04-30 1971-01-29 Thomson Csf
US3660647A (en) * 1969-12-24 1972-05-02 Us Navy Automatic signal delay tracking system
GB1398381A (en) * 1971-06-10 1975-06-18 Kent Instruments Ltd Correlators
DE2133942C3 (en) * 1971-07-02 1973-11-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arrangement for the non-contact measurement of the speed of an object
DE2705159A1 (en) * 1977-02-04 1978-08-17 Licentia Gmbh Finding correlation function maximum - is by auto-correlator balancing determination of band central frequency using delay circuits

Also Published As

Publication number Publication date
JPS55500512A (en) 1980-08-14
IT7922990A0 (en) 1979-05-25
FR2476351A1 (en) 1981-08-21
WO1979001119A1 (en) 1979-12-27
CA1114511A (en) 1981-12-15
GB2039110B (en) 1982-11-17
DE2952812A1 (en) 1980-12-11
EP0019618A1 (en) 1980-12-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee