GB1125155A - Improved method and apparatus for measuring the length of a section of advancing material - Google Patents

Improved method and apparatus for measuring the length of a section of advancing material

Info

Publication number
GB1125155A
GB1125155A GB3935965A GB3935965A GB1125155A GB 1125155 A GB1125155 A GB 1125155A GB 3935965 A GB3935965 A GB 3935965A GB 3935965 A GB3935965 A GB 3935965A GB 1125155 A GB1125155 A GB 1125155A
Authority
GB
United Kingdom
Prior art keywords
length
doppler
measuring
section
sept
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.)
Expired
Application number
GB3935965A
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.)
Societe de Fabrication dInstruments de Mesure SFIM SA
Original Assignee
Societe de Fabrication dInstruments de Mesure SFIM SA
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 Societe de Fabrication dInstruments de Mesure SFIM SA filed Critical Societe de Fabrication dInstruments de Mesure SFIM SA
Publication of GB1125155A publication Critical patent/GB1125155A/en
Expired legal-status Critical Current

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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/06—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length-Measuring Devices Using Wave Or Particle Radiation (AREA)

Abstract

1,125,155. Detecting length by radar methods. SOC. DE FABRICATION D'INSTRUMENTS DE MESURE (S.F.I.M.). 15 Sept., 1965 [22 Sept., 1964], No. 39359/65. Heading H4P. The invention relates to the measurement of the length L of a strip of moving material 1-e.g. strip iron on a rolling mill-by projecting a C.W. beam of radiation towards the material at a frequency f 0 , receiving the doppler shifted reflected wave at frequency f 1 , deriving the doppler beat, and determining said length by counting the number of cycles in the doppler beat. If the length of the material is L and the velocity is V, then the duartion of the doppler signal is L/V. The doppler beat fd is given by:- and the number n of cycles counted is given by :- The count on counter 7 may be the number n directly, or the scale of counting may be such that the count gives L directly. Reference has been directed by the Comptroller to Specification 972,775.
GB3935965A 1964-09-22 1965-09-15 Improved method and apparatus for measuring the length of a section of advancing material Expired GB1125155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR988885A FR1417206A (en) 1964-09-22 1964-09-22 Method for measuring the length of an element of strip material, during travel, in particular of a sheet metal coupon and apparatus applying such a method

Publications (1)

Publication Number Publication Date
GB1125155A true GB1125155A (en) 1968-08-28

Family

ID=8838799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3935965A Expired GB1125155A (en) 1964-09-22 1965-09-15 Improved method and apparatus for measuring the length of a section of advancing material

Country Status (6)

Country Link
BE (1) BE669504A (en)
CH (1) CH431109A (en)
ES (1) ES317647A1 (en)
FR (1) FR1417206A (en)
GB (1) GB1125155A (en)
LU (1) LU49483A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0425118A2 (en) * 1989-10-23 1991-05-02 Hughes Aircraft Company Method and apparatus for monitoring optical fibers during payout

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0425118A2 (en) * 1989-10-23 1991-05-02 Hughes Aircraft Company Method and apparatus for monitoring optical fibers during payout
EP0425118A3 (en) * 1989-10-23 1992-07-29 Hughes Aircraft Company Method and apparatus for monitoring optical fibers during payout
TR25482A (en) * 1989-10-23 1993-05-01 Hughes Aircraft Co METHOD AND EQUIPMENT FOR CONTROL OF OPTICAL FIBERS DURING THE RELEASE.

Also Published As

Publication number Publication date
ES317647A1 (en) 1966-04-01
CH431109A (en) 1967-02-28
LU49483A1 (en) 1965-11-15
FR1417206A (en) 1965-11-12
BE669504A (en) 1965-12-31

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