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DK0785443T3 - Method and apparatus for measuring the maturity of an electrical, electromagnetic or acoustic signal - Google Patents

Method and apparatus for measuring the maturity of an electrical, electromagnetic or acoustic signal

Info

Publication number
DK0785443T3
DK0785443T3 DK97100013T DK97100013T DK0785443T3 DK 0785443 T3 DK0785443 T3 DK 0785443T3 DK 97100013 T DK97100013 T DK 97100013T DK 97100013 T DK97100013 T DK 97100013T DK 0785443 T3 DK0785443 T3 DK 0785443T3
Authority
DK
Denmark
Prior art keywords
threshold voltage
electromagnetic
acoustic signal
maturity
measuring
Prior art date
Application number
DK97100013T
Other languages
Danish (da)
Inventor
Nils Kroemer
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of DK0785443T3 publication Critical patent/DK0785443T3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/38—Detecting the response signal, e.g. electronic circuits specially adapted therefor by time filtering, e.g. using time gates
    • 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
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • G01N29/075—Analysing solids by measuring propagation velocity or propagation time of acoustic waves by measuring or comparing phase angle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S15/101—Particularities of the measurement of distance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/527—Extracting wanted echo signals
    • G01S7/5273—Extracting wanted echo signals using digital techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02836—Flow rate, liquid level

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measuring Volume Flow (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

An electric, electromagnetic or acoustic signal between a transmitter and a receiver is measured. The transmitter provides pulsed signals which are received at the receiver end as rising and falling wave packets with several oscillations. The received signal is compared with a first predetermined threshold voltage and compared with a second threshold voltage using a second comparator. The second threshold voltage is approximately equal to the dc component. The first comparator is switched near the beginning of a positive or negative half wave of the received signal to provide a stop signal for a run time counter regardless of whether the first threshold voltage is greater than the second or less than the second threshold voltage.
DK97100013T 1996-01-26 1997-01-02 Method and apparatus for measuring the maturity of an electrical, electromagnetic or acoustic signal DK0785443T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19602810A DE19602810A1 (en) 1996-01-26 1996-01-26 Method and device for measuring the transit time of an electrical, electromagnetic or acoustic signal

Publications (1)

Publication Number Publication Date
DK0785443T3 true DK0785443T3 (en) 2003-03-24

Family

ID=7783771

Family Applications (1)

Application Number Title Priority Date Filing Date
DK97100013T DK0785443T3 (en) 1996-01-26 1997-01-02 Method and apparatus for measuring the maturity of an electrical, electromagnetic or acoustic signal

Country Status (4)

Country Link
EP (1) EP0785443B1 (en)
AT (1) ATE229655T1 (en)
DE (2) DE19602810A1 (en)
DK (1) DK0785443T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6265676B1 (en) * 1997-03-10 2001-07-24 Electronics For Imaging, Inc. Systems and processing algorithms for ultrasound time-of-flight digitizer systems
US6151014A (en) * 1998-02-26 2000-11-21 Pagasus Technologies Ltd. Systems and processing algorithms for ultrasound time-of-flight digitizer systems
JP3616324B2 (en) * 2000-11-27 2005-02-02 東京計装株式会社 Ultrasonic flow meter by propagation time difference method
DE102004027958B4 (en) * 2004-06-08 2007-07-12 M & Fc Holding Llc Method and device for measuring the flow rate of fluids
DK1731883T3 (en) * 2005-06-10 2012-02-27 Landis & Gyr Gmbh Method for detecting a geometry change by an ultrasonic flow channel
DE102005035584B4 (en) * 2005-07-29 2007-06-06 Hydrometer Gmbh Method for carrying out flow measurements in a flowing fluid
CN108283011B (en) * 2015-08-12 2021-02-19 特里亚德国家安全有限责任公司 Detecting and monitoring changes in metal structures using multi-mode acoustic signals
DE102016219663B4 (en) 2016-10-11 2018-08-02 Conti Temic Microelectronic Gmbh Method for monitoring a network for anomalies
EP3785027B1 (en) * 2018-04-27 2024-07-10 Chevron U.S.A. Inc. Detection, monitoring, and determination of location of changes in metallic structures using multimode acoustic signals
CN109342997A (en) * 2018-12-04 2019-02-15 国家电网有限公司 A time difference positioning method and device based on pulse energy accumulation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824464A (en) * 1973-07-16 1974-07-16 Honeywell Inc Pulse detection systems
FR2327553A1 (en) * 1975-10-10 1977-05-06 Thomson Csf MEASUREMENT DEVICE BY ELECTRONIC CORRELATION OF THE DELAY BETWEEN TWO TIME SIGNALS AND SYSTEMS INCLUDING SUCH A DEVICE
DE2607187C3 (en) * 1976-02-23 1986-07-10 Krautkrämer GmbH, 5000 Köln Method for measuring the time interval between two electrical pulses
DE2853170A1 (en) * 1978-12-08 1980-06-19 Deutsch Pruef Messgeraete Ultrasonic technique for metrology - using peak value sensors responding to test piece end surfaces to operate flip=flop, gate element and counter
DE3210436C2 (en) * 1982-03-22 1984-01-05 Nukem Gmbh, 6450 Hanau Method and device for determining the time interval between two electrical pulses
DE3446837A1 (en) * 1984-12-21 1986-06-26 Institut Dr. Friedrich Förster Prüfgerätebau GmbH & Co KG, 7410 Reutlingen METHOD AND DEVICE FOR ACCURELY DETERMINING THE TIME DISTANCE OF TWO ELECTRICAL PULSES
DE3905956A1 (en) * 1989-02-25 1990-09-13 Fraunhofer Ges Forschung DEVICE FOR MEASURING ULTRASONIC TIME
DD290948A5 (en) * 1989-12-27 1991-06-13 Brennstoffinstitut Freiberg,De CIRCUIT ARRANGEMENT FOR DETERMINING THE INITIAL TIME OF AN ULTRASONIC RECEPTION SIGNAL
EP0452531B1 (en) * 1990-04-20 1995-01-04 Siemens Aktiengesellschaft Electric measuring device for determining the propagation time of an electrical signal
DE4222643A1 (en) * 1992-07-10 1994-01-13 Bodenseewerk Geraetetech Device for measuring pulse transit times
DE69325710T2 (en) * 1993-09-06 2000-03-02 Sony Corp., Tokio/Tokyo Method and device for distance measurement

Also Published As

Publication number Publication date
EP0785443A2 (en) 1997-07-23
DE19602810A1 (en) 1997-07-31
EP0785443A3 (en) 1998-12-02
ATE229655T1 (en) 2002-12-15
EP0785443B1 (en) 2002-12-11
DE59708910D1 (en) 2003-01-23

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