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GB1514350A - Method and apparatus for automatic calibration of measuring instruments - Google Patents

Method and apparatus for automatic calibration of measuring instruments

Info

Publication number
GB1514350A
GB1514350A GB5292976A GB5292976A GB1514350A GB 1514350 A GB1514350 A GB 1514350A GB 5292976 A GB5292976 A GB 5292976A GB 5292976 A GB5292976 A GB 5292976A GB 1514350 A GB1514350 A GB 1514350A
Authority
GB
United Kingdom
Prior art keywords
pick
measuring instrument
factor
ups
length
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
GB5292976A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1514350A publication Critical patent/GB1514350A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/04—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B7/042—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
    • G01B7/046—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length using magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B11/043—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1514350 Correcting speed and length measurements H ALMGREN and L MILLGARD 17 Dec 1976 [18 Dec 1975] 52929/76 Heading G1N The invention relates to a method of automatically correcting a measuring instrument which measures the velocity and length of an object 17. The method comprises multiplying in a multiplier 5 the output signal of the measuring instrument 1, the signal being proportioned to the velocity of the object 7, by a scale or correction factor, the factor being a quotient formed by the distance L between two pick-ups 2, 3 created along the path of movement of the object divided by the number which is obtained when the output signal of the measuring instrument is integrated as in integrator 4 over the time interval during which a predetermined portion or creation of the object passes through the distance between the pick-ups 2, 3. If a plurality of objects are to be measured the factor is redetermined or recalculated for each object. Alternatively if an "endless" object is being measured the factor is redetermined at predetermined intervals of time. The pick-ups may comprise photo-cells and a further pick-up 6 may be provided upstream of the measuring instrument 1 for measuring object of "finite" length.
GB5292976A 1975-12-18 1976-12-17 Method and apparatus for automatic calibration of measuring instruments Expired GB1514350A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7514314A SE393460B (en) 1975-12-18 1975-12-18 WAY TO AUTOMATICALLY CALIBRATE METDON INTENDED FOR SPEED OR LENGTH SATURATION

Publications (1)

Publication Number Publication Date
GB1514350A true GB1514350A (en) 1978-06-14

Family

ID=20326373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5292976A Expired GB1514350A (en) 1975-12-18 1976-12-17 Method and apparatus for automatic calibration of measuring instruments

Country Status (3)

Country Link
DE (1) DE2655645A1 (en)
GB (1) GB1514350A (en)
SE (1) SE393460B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412821A1 (en) * 1977-12-23 1979-07-20 Nissan Motor ELECTRONIC JOURNEY METERS WITH CORRECTION CIRCUIT FOR MOTOR VEHICLES
WO1981003708A1 (en) * 1980-06-10 1981-12-24 Broken Hill Pty Co Ltd Measurement of speed and/or length
EP0069273A2 (en) * 1981-06-26 1983-01-12 Autech Corporation Method and apparatus for measuring length
GB2201784A (en) * 1987-02-28 1988-09-07 Business & Ind Technical Servi Measuring dimension of articles on a conveyor system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4482972A (en) * 1981-06-25 1984-11-13 Lewis Clarence A Distance sensing apparatus and method
DE3502406C2 (en) * 1985-01-22 1987-04-23 Dr. Peter + Steinwender Technische Geräte GmbH, 8176 Waakirchen Method and device for the continuous, contactless determination of the length of an undivided, moving body
DE102004047506B4 (en) * 2004-09-28 2007-12-06 Daimlerchrysler Ag Method and device for image-based calibration of tachographs in vehicles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412821A1 (en) * 1977-12-23 1979-07-20 Nissan Motor ELECTRONIC JOURNEY METERS WITH CORRECTION CIRCUIT FOR MOTOR VEHICLES
WO1981003708A1 (en) * 1980-06-10 1981-12-24 Broken Hill Pty Co Ltd Measurement of speed and/or length
EP0069273A2 (en) * 1981-06-26 1983-01-12 Autech Corporation Method and apparatus for measuring length
EP0069273A3 (en) * 1981-06-26 1983-04-13 Autech Corporation Method and apparatus for measuring length
GB2201784A (en) * 1987-02-28 1988-09-07 Business & Ind Technical Servi Measuring dimension of articles on a conveyor system

Also Published As

Publication number Publication date
SE393460B (en) 1977-05-09
DE2655645A1 (en) 1977-06-30

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Legal Events

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