ZA9087B - A method for measuring length,and apparatus for implementing the method - Google Patents

A method for measuring length,and apparatus for implementing the method

Info

Publication number
ZA9087B
ZA9087B ZA9087A ZA9087A ZA9087B ZA 9087 B ZA9087 B ZA 9087B ZA 9087 A ZA9087 A ZA 9087A ZA 9087 A ZA9087 A ZA 9087A ZA 9087 B ZA9087 B ZA 9087B
Authority
ZA
South Africa
Prior art keywords
implementing
measuring length
measuring
length
Prior art date
Application number
ZA9087A
Inventor
Armin W Hrdlicka
W Hrdlicka Armin
Wolfgang Pribyl
Pribyl Wolfgang
Hermann Schuster
Schuster Hermann
Klaus Loibner
Loibner Klaus
Harald Koffler
Koffler Harald
Original Assignee
W Hrdlicka Armin
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 W Hrdlicka Armin filed Critical W Hrdlicka Armin
Publication of ZA9087B publication Critical patent/ZA9087B/en

Links

Classifications

    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
ZA9087A 1989-01-16 1990-01-05 A method for measuring length,and apparatus for implementing the method ZA9087B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0006889A AT393738B (en) 1989-01-16 1989-01-16 Length-measuring method

Publications (1)

Publication Number Publication Date
ZA9087B true ZA9087B (en) 1990-10-31

Family

ID=3480681

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA9087A ZA9087B (en) 1989-01-16 1990-01-05 A method for measuring length,and apparatus for implementing the method

Country Status (2)

Country Link
AT (1) AT393738B (en)
ZA (1) ZA9087B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401109B (en) * 1993-07-01 1996-06-25 Forschungsgesellschaft Joanneu Method for contactless length measurement
DE102010001886A1 (en) 2010-02-12 2011-08-18 Technische Universität Graz Method for determination of length of pipe containing air, involves determining minimum and/or maximum values of function of frequency and/or time, where length of pipe is computed based on determined values

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB842241A (en) * 1957-10-31 1960-07-27 Magnaflux Corp Improvements in or relating to sonic thickness measuring apparatus
US3237445A (en) * 1962-08-20 1966-03-01 American Mach & Foundry Ultrasonic inspection device
DE2144472C3 (en) * 1971-09-06 1974-08-01 Gosudarstwennij Uniwersitet Imeni 300 Letija Wossojedinenija Ukrainij S Rossiej, Dnepropetrowsk (Sowjetunion) Method and device for non-contact measurement of the thickness of metallic objects
FR2185095A6 (en) * 1972-05-16 1973-12-28 Commissariat Energie Atomique
DE2312062C2 (en) * 1973-03-10 1974-08-01 Gesellschaft Fuer Kernforschung Mbh, 7500 Karlsruhe Wall thickness measuring device, based on the ultrasonic immersion resonance method
DE3117236A1 (en) * 1981-04-30 1982-11-18 Agfa-Gevaert Ag, 5090 Leverkusen METHOD FOR SCANING OBJECTS

Also Published As

Publication number Publication date
ATA6889A (en) 1991-05-15
AT393738B (en) 1991-12-10

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