FR2441148A1 - Diameter and/or curvature measurement for elongated object - uses data processor to evaluate light passing on both sides using mirror reflectors and chain drive esp. for timber - Google Patents

Diameter and/or curvature measurement for elongated object - uses data processor to evaluate light passing on both sides using mirror reflectors and chain drive esp. for timber

Info

Publication number
FR2441148A1
FR2441148A1 FR7927690A FR7927690A FR2441148A1 FR 2441148 A1 FR2441148 A1 FR 2441148A1 FR 7927690 A FR7927690 A FR 7927690A FR 7927690 A FR7927690 A FR 7927690A FR 2441148 A1 FR2441148 A1 FR 2441148A1
Authority
FR
France
Prior art keywords
timber
data processor
sides
diameter
light passing
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
FR7927690A
Other languages
French (fr)
Other versions
FR2441148B1 (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.)
Kockums Automation AB
Original Assignee
Kockums Automation AB
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 Kockums Automation AB filed Critical Kockums Automation AB
Publication of FR2441148A1 publication Critical patent/FR2441148A1/en
Application granted granted Critical
Publication of FR2441148B1 publication Critical patent/FR2441148B1/fr
Granted 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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
    • G01B11/10—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving
    • G01B11/105—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving using photoelectric detection 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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/255—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring radius of curvature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

A method of measurement value sensing in the detection of predefined dia. and/or curvature values in elongated objects, e.g. of timber involves an optical contactless measurement arrangement scanning the object as it passes on a transport device. A light beam passing the object on both sides is received and the detector signals used to evaluate the dia. along two inclined directions in a number of planes along the object length using a data processor. The method is more accurate than those using reflected light. The beams corresp. to the two measurement directions pass through two stationary conveyor component cut-outs past which the object moves at a fixed angle. The object is raised until at least one of the beams passes between the object and the stationary component.
FR7927690A 1978-11-10 1979-11-09 Diameter and/or curvature measurement for elongated object - uses data processor to evaluate light passing on both sides using mirror reflectors and chain drive esp. for timber Granted FR2441148A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7811621A SE414543C (en) 1978-11-10 1978-11-10 METHOD VALUE PROCEDURE FOR DETERMINING A DETERMINED DIAMETER AND / OR CURVING VALUE OF A LONG-TERM FORM LIKE A STOCK OR CLEAR AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE

Publications (2)

Publication Number Publication Date
FR2441148A1 true FR2441148A1 (en) 1980-06-06
FR2441148B1 FR2441148B1 (en) 1985-01-25

Family

ID=20336321

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7927690A Granted FR2441148A1 (en) 1978-11-10 1979-11-09 Diameter and/or curvature measurement for elongated object - uses data processor to evaluate light passing on both sides using mirror reflectors and chain drive esp. for timber

Country Status (6)

Country Link
AT (1) AT385847B (en)
DE (1) DE2945456A1 (en)
FI (1) FI73832C (en)
FR (1) FR2441148A1 (en)
NO (1) NO152987C (en)
SE (1) SE414543C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0404544A2 (en) * 1989-06-21 1990-12-27 Shin-Etsu Handotai Company Limited Non-contact type automatic multi-point diameter measurement apparatus
EP0442252A2 (en) * 1990-02-16 1991-08-21 GEC ALSTHOM T&D GESELLSCHAFT m.b.H. Device to assess the dimensions of a possibly moving object
FR2678062A1 (en) * 1991-06-24 1992-12-24 Keba Gmbh Co SYSTEM FOR MEASURING ELONGATE OBJECTS, ESPECIALLY TREE TRUNKS.

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3219388C2 (en) * 1982-05-24 1986-05-22 Dipl.-Ing. Bruno Richter GmbH & Co. Elektronische Betriebskontroll-Geräte KG, 8602 Stegaurach Optical-electrical measuring device for measuring the position and / or the dimensions of objects
FI71013C (en) * 1983-01-06 1986-10-27 Schauman Wilh Oy OVER ANCHORING FOER BESTAEMMANDE AV EN OENSKAD CENTRALLINJE FOER CYLINDERLIKA KROPPAR SAOSOM TRAESTOCKAR
FI68910C (en) * 1984-01-17 1986-11-25 Kimmo Koskenohi FOERFARANDE FOER OPTISK MAETNING AV LAONGSTRAECKTA STYCKEN
DE3410654A1 (en) * 1984-03-23 1985-10-03 Belzer-Dowidat Gmbh Werkzeug-Union, 5600 Wuppertal TEST DEVICE FOR ROLLABLE SHAFTS
SE446509B (en) * 1985-05-14 1986-09-22 Regionala Stiftelsen I Vermlan DEVICE FOR SORTING FOOD DINING
SE467147B (en) * 1990-08-27 1992-06-01 Soederhamns Verkstaeder Ab PROCEDURE AND ESTABLISHMENT FOR POSITIONING OF STOCKS IN CONNECTION WITH THE FORM OF STOCK BLOCKS
AT395481B (en) * 1991-02-28 1993-01-25 Sprecher Energie Oesterreich MEASURING FEEDER OF AN OPTOELECTRONIC MEASURING DEVICE
DE4201385A1 (en) * 1992-01-21 1993-07-22 Peter Dipl Ing Renner Optical measurement system with light curtain, photoelectric receiver - contains null point, linearity error correction circuit for digitised receiver signal
DE4215733A1 (en) * 1992-05-13 1993-11-18 Dietrich Gerhard Ellsaeser Wood dia. measurement device - has adjustable jaws with angle decoder or incremental sensor, tape measure, data processor and display
NO178909C (en) * 1993-04-19 1996-06-26 Toni Rydningen Measuring device
NO180316C (en) * 1993-04-19 1997-04-09 Toni Rydningen Device for dimension measurement
FI952028A0 (en) * 1995-04-28 1995-04-28 Jorma Reponen Automatic marketing and qualification station
DE19525987A1 (en) * 1995-07-17 1997-01-23 Bayerische Motoren Werke Ag Method for measuring a spatial contour extending approximately in a longitudinal direction
DE19631205C2 (en) * 1996-08-02 1998-07-30 Werner Schulz Method and device for detecting the geometry of a three-dimensional object
FI114743B (en) 1999-09-28 2004-12-15 Ekspansio Engineering Ltd Oy Apparatus and procedure operating on telecentric principle
DE102005000610B3 (en) * 2005-01-03 2006-09-21 Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg Method and device for determining the deflection of a connecting element
DE102006048744A1 (en) * 2006-10-12 2008-04-17 visicontrol Gesellschaft für elektronische Bildverarbeitung mbH Test specimen's height measuring device, has positioning unit i.e. guide rail, provided for positioning specimen on supporting device in defined position with projecting length such that specimen is measurable in range of projecting length
CN109443175B (en) * 2018-11-30 2021-04-23 安徽省瀚辰生态建设有限公司 Log size detection device for building detection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724958A (en) * 1970-03-09 1973-04-03 Knox Inc Scanning and control apparatus
DE2555975A1 (en) * 1975-10-30 1977-05-05 Kletzmaier Optoelectrical dimension measurement of moving objects - uses silhouette sensing technique for objects on conveyor such as dia. of wooden logs

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806253A (en) * 1972-12-13 1974-04-23 Weyerhaeuser Co Sweep measuring scheme

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724958A (en) * 1970-03-09 1973-04-03 Knox Inc Scanning and control apparatus
DE2555975A1 (en) * 1975-10-30 1977-05-05 Kletzmaier Optoelectrical dimension measurement of moving objects - uses silhouette sensing technique for objects on conveyor such as dia. of wooden logs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0404544A2 (en) * 1989-06-21 1990-12-27 Shin-Etsu Handotai Company Limited Non-contact type automatic multi-point diameter measurement apparatus
EP0404544A3 (en) * 1989-06-21 1991-11-27 Shin-Etsu Handotai Company Limited Non-contact type automatic multi-point diameter measurement apparatus
EP0442252A2 (en) * 1990-02-16 1991-08-21 GEC ALSTHOM T&D GESELLSCHAFT m.b.H. Device to assess the dimensions of a possibly moving object
EP0442252A3 (en) * 1990-02-16 1991-11-13 Sprecher Energie Oesterreich Gesellschaft M.B.H. Device to assess the dimensions of a possibly moving object
FR2678062A1 (en) * 1991-06-24 1992-12-24 Keba Gmbh Co SYSTEM FOR MEASURING ELONGATE OBJECTS, ESPECIALLY TREE TRUNKS.

Also Published As

Publication number Publication date
DE2945456C2 (en) 1991-06-13
FI73832C (en) 1987-11-09
AT385847B (en) 1988-05-25
NO793606L (en) 1980-05-13
ATA722879A (en) 1987-10-15
FI73832B (en) 1987-07-31
NO152987C (en) 1985-12-27
FR2441148B1 (en) 1985-01-25
DE2945456A1 (en) 1980-05-22
NO152987B (en) 1985-09-16
FI793496A (en) 1980-05-11
SE7811621L (en) 1980-05-11
SE414543B (en) 1980-08-04
SE414543C (en) 1982-10-04

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Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property
ST Notification of lapse