SE9201277D0 - Metod och maetsystem foer detektering av defekter vid ytan av ett traestycke - Google Patents

Metod och maetsystem foer detektering av defekter vid ytan av ett traestycke

Info

Publication number
SE9201277D0
SE9201277D0 SE9201277A SE9201277A SE9201277D0 SE 9201277 D0 SE9201277 D0 SE 9201277D0 SE 9201277 A SE9201277 A SE 9201277A SE 9201277 A SE9201277 A SE 9201277A SE 9201277 D0 SE9201277 D0 SE 9201277D0
Authority
SE
Sweden
Prior art keywords
defects
detection
measurement system
piece
wood
Prior art date
Application number
SE9201277A
Other languages
English (en)
Other versions
SE9201277L (sv
SE510242C2 (sv
Inventor
P Nyquist
Original Assignee
Limab Laser Instrumentmek
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 Limab Laser Instrumentmek filed Critical Limab Laser Instrumentmek
Priority to SE9201277A priority Critical patent/SE510242C2/sv
Publication of SE9201277D0 publication Critical patent/SE9201277D0/sv
Priority to PCT/SE1993/000352 priority patent/WO1993022659A1/en
Publication of SE9201277L publication Critical patent/SE9201277L/sv
Publication of SE510242C2 publication Critical patent/SE510242C2/sv

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/898—Irregularities in textured or patterned surfaces, e.g. textiles, wood
    • G01N21/8986—Wood
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/46—Wood
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • G01N2021/8905—Directional selective optics, e.g. slits, spatial filters
SE9201277A 1992-04-23 1992-04-23 Metod och mätsystem för detektering av defekter vid ytan av ett trästycke SE510242C2 (sv)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9201277A SE510242C2 (sv) 1992-04-23 1992-04-23 Metod och mätsystem för detektering av defekter vid ytan av ett trästycke
PCT/SE1993/000352 WO1993022659A1 (en) 1992-04-23 1993-04-23 Method and system for detection of defects on the surface of a wood article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9201277A SE510242C2 (sv) 1992-04-23 1992-04-23 Metod och mätsystem för detektering av defekter vid ytan av ett trästycke

Publications (3)

Publication Number Publication Date
SE9201277D0 true SE9201277D0 (sv) 1992-04-23
SE9201277L SE9201277L (sv) 1993-10-24
SE510242C2 SE510242C2 (sv) 1999-05-03

Family

ID=20386034

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9201277A SE510242C2 (sv) 1992-04-23 1992-04-23 Metod och mätsystem för detektering av defekter vid ytan av ett trästycke

Country Status (2)

Country Link
SE (1) SE510242C2 (sv)
WO (1) WO1993022659A1 (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5960104A (en) * 1996-08-16 1999-09-28 Virginia Polytechnic & State University Defect detection system for lumber
ITBZ20020018A1 (it) * 2002-04-18 2003-10-20 Microtec Srl Procedimento per riconoscere sulla superficie di tavole di legno la presenza di difetti quali crepe o bordi smussati.
CA2788399A1 (en) 2011-08-31 2013-02-28 Woodtech Measurement Solutions System and method for variability detection in bundled objects
CN107677686B (zh) * 2017-09-28 2021-01-26 京东方科技集团股份有限公司 光线透过窗集成装置及采用该装置的设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE404964B (sv) * 1977-03-22 1978-11-06 Sarlos Seppo Edvard Anordning for detektering av stralning fran ett foremal for faststellande av avvikelser eller fel hos en yta av detsamma
SE8304117L (sv) * 1983-07-22 1985-01-23 Tord Wadell Forfarande och anordning for beroringsfri identifiering och strukturbeskrivning av virke
US4675730A (en) * 1985-09-06 1987-06-23 Aluminum Company Of America Video surface inspection system
US4891530A (en) * 1986-02-22 1990-01-02 Helmut K. Pinsch Gmbh & Co. Testing or inspecting apparatus and method for detecting differently shaped surfaces of objects

Also Published As

Publication number Publication date
SE9201277L (sv) 1993-10-24
WO1993022659A1 (en) 1993-11-11
SE510242C2 (sv) 1999-05-03

Similar Documents

Publication Publication Date Title
ES2049786T5 (es) Procedimiento para el funcionamiento de un detector optico de humos y detector de humos para ejecutar el procedimiento.
DE3687490D1 (de) Remissionsmessgeraet zur beruehrungslosen messung.
SE8301574D0 (sv) Apparat for optisk undersokning av foremal
SE7904749L (sv) Fotoelektrisk anordning for avkenning av hinder etc
SE7807199L (sv) Fiberoptisk temperaturgivare
ES472784A1 (es) Procedimiento y dispositivo de inspeccion y control de obje-tos transparentes
SE8002507L (sv) Automatisk felsokningsapparat for bakytor
NO166423C (no) Apparat til paavisning av fargeforskjeller hos et materiale
FI56451C (fi) Foerfarande och anordning foer maetning av traevirke
DE69712872D1 (de) Dreidimensionale farbbildaufnahme
FI103076B (sv) Metod och apparatur för detektering av bark och mätning av barkningsgr aden hos trä och flis
SE9400849L (sv) Anordning och förfarande för detektering av defekter i virke
SE8102772L (sv) Forfarande for laserinducerad fluoriscensdetektering och anordning for genomforande av forfarandet
ATE44177T1 (de) Abtastsender zum optischen pruefen von transparenten gegenstaenden.
DE3688547D1 (de) "diffraktosight"-verfahren.
SE8800599L (sv) Metod och anordning foer partikelkoncentrationsmaetning i en suspension
SE9201277D0 (sv) Metod och maetsystem foer detektering av defekter vid ytan av ett traestycke
DE3780872D1 (de) Verfahren zum pruefen von bauteilen aus transparentem material auf oberflaechenfehler und einschluesse.
JPS548583A (en) Apparatus for detecting defect presence on substance surface reflecting at least of part of illuminating light
FI843209A (fi) Foerfarande och anordning foer maetning av halten suspenderade substanser i ett stroemmande medium.
DK0871028T3 (da) Fremgangsmåde og apparat til detektion af fremmedlegemer i en gennemskinnelig eller transparent beholder
FI61573C (fi) Foerfaringssaett och anordning foer bestaemning av bredden av en plan ytdel
SE9601800D0 (sv) Anordning och metod för detektering av defekter
JPS57135305A (en) Length measuring method and its device
ATE217431T1 (de) Vorrichtung zur detektion von remittiertem licht

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 9201277-2

Format of ref document f/p: F