SE464105B - SETTING AND DEVICE MAKING IDENTIFYING THE STOCK'S BACKGROUND FROM A STOCK MANUFACTURED BIT - Google Patents

SETTING AND DEVICE MAKING IDENTIFYING THE STOCK'S BACKGROUND FROM A STOCK MANUFACTURED BIT

Info

Publication number
SE464105B
SE464105B SE9000730A SE9000730A SE464105B SE 464105 B SE464105 B SE 464105B SE 9000730 A SE9000730 A SE 9000730A SE 9000730 A SE9000730 A SE 9000730A SE 464105 B SE464105 B SE 464105B
Authority
SE
Sweden
Prior art keywords
wood
marrow
sensors
piece
comparator
Prior art date
Application number
SE9000730A
Other languages
Swedish (sv)
Other versions
SE9000730D0 (en
Inventor
S Larsson
Original Assignee
Rema Control 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 Rema Control Ab filed Critical Rema Control Ab
Priority to SE9000730A priority Critical patent/SE464105B/en
Publication of SE9000730D0 publication Critical patent/SE9000730D0/en
Priority to DE4104501A priority patent/DE4104501A1/en
Priority to FI910757A priority patent/FI910757A/en
Publication of SE464105B publication Critical patent/SE464105B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/04—Sorting according to size
    • B07C5/12—Sorting according to size characterised by the application to particular articles, not otherwise provided for
    • B07C5/14—Sorting timber or logs, e.g. tree trunks, beams, planks or the like

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Forests & Forestry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Description

464 105 z lat centrumblock (dvs de hopslagna blocken 12a och 12b, när upp- delning genom snittet S' inte genomförs), dvs att uppfinningen är användbar hos alla virkesbitar vilka har en rensågad yta som ligger närmare, och en rensågad yta som ligger på större avstånd från märgområdet C, alltså hos alla virkesbitar utom ej itusågade centrumblock. 464 105 z latent center blocks (ie the folded blocks 12a and 12b, when division through the section S 'is not carried out), i.e. the invention is useful in all pieces of wood which have a sawn surface which is closer, and a sawn surface which lies on greater distance from the medullary area C, ie in all pieces of wood except non-sawn center blocks.

Ur fig lb framgår också att en vankant V alltid kan fö- rekomma endast på resp i anslutning till en splintyta, och upp- finningen lämpar sig i praktiken främst till att identifiera splintytorna (med "vankantsrisk) hos brädor.Fig. 1b also shows that a vane edge V can always occur only on or in connection with a splinter surface, and the invention is in practice mainly suitable for identifying the splinter surfaces (with "vane edge risk) of boards.

Uppfinningen kännetecknas av särdrag som framgår ur närslutna patentkrav, och den kommer nu att förklaras mera i detalj med hjälp av bifogade schematiska ritningar, i vilka fig 2a och 2b är en sidovy och en perspektivvy (i mindre skala) av en anordning för genomförande av förfarandet enligt uppfinningen, och i fig 3a och 3b visas tvâ signalmönster erhållna i anord- ningen enligt fig 2.The invention is characterized by features which appear from the appended claims, and it will now be explained in more detail by means of the accompanying schematic drawings, in which Figures 2a and 2b are a side view and a perspective view (on a smaller scale) of a device for carrying out the method. according to the invention, and in Figs. 3a and 3b two signal patterns obtained in the device according to Fig. 2 are shown.

Enligt fig 2 transporteras en rensågad bräda 11 på en icke visad tvärtransportör i pilens P riktning mellan åtminstone ett par mittemot varandra belägna avkännare 20a, 20b, t ex sän- dare-mottagarorgan för synligt eller infrarött ljus, vilka är känsliga på den skillnad i andelen reflekterat ljus som härrör från skillnaden i ytstrukturlinjernas och det omgivande vedmate- rialets reflexionsförmåga.According to Fig. 2, a cleared board 11 on a transverse conveyor (not shown) is transported in the direction of the arrow P between at least a pair of opposite sensors 20a, 20b, e.g. transmitter-receiver means for visible or infrared light, which are sensitive to the difference in proportion reflected light resulting from the difference in the reflectivity of the surface structure lines and the surrounding wood material.

Härvid alstrar den avkännare, 20b i ritningen, som avsöker brädans ll märgytta I, dvs den nedre i ritningen, ut- signaler i ett tätare mönster MI enligt fig 3b, än vad den andra avännaren, 20a i ritningen, gör, som alstrar utsignalerna i ett mönster MY enligt fig 3a.In this case, the sensor, 20b in the drawing, which scans the marrow surface I of the board 11, i.e. the lower one in the drawing, generates output signals in a denser pattern MI according to Fig. 3b, than does the other user, 20a in the drawing, which generates the output signals in a pattern MY according to Fig. 3a.

För större mätsäkerhet kan enligt fig 2b flera avkän- narpar 20a, 20b anordnas utmed de avsökta virkesbitarnas längd.For greater measurement accuracy, according to Fig. 2b, several sensor pairs 20a, 20b can be arranged along the length of the scanned pieces of wood.

Utsignalerna MI, My från båda avkännarna i ett par in- matas i en komparators 21 bägge ingångar, varvid komparatorn är programmerad resp kopplad så, att den vid utgången U avger en komparator-utsignal som indikerar vilken yta som hos den avsökta virkesbiten ligger åt valt håll, t ex uppåt.The output signals MI, My from both sensors in a pair are input to both inputs of a comparator 21, the comparator being programmed or connected so that it outputs at the output U a comparator output signal which indicates which area of the scanned piece of timber is selected. hold, eg upwards.

Utnyttjande av denna komparator-utsignal ligger utanför ramen för föreliggande uppfinning; det kan gälla t ex visuell in- *UPUtilization of this comparator output is outside the scope of the present invention; this may apply, for example, to visual in- * UP

Claims (4)

464 105 3 dikering, eller direkt styrning av något don, t ex ett stämpeldon som väl synbart märker virkesbitens ena eller båda ytor, eller en i anslutning till transportören anordnad växel som styr virkesbi- ten mot eller förbi en vändare, så att till slut alla virkesbi- tarna är likadant orienterade med avseende på splint- och märgy- tor. Patentkrav ,.464 105 3 directing, or direct control of any device, for example a stamping device which clearly marks one or both surfaces of the piece of wood, or a gear arranged in connection with the conveyor which guides the piece of wood towards or past a turner, so that in the end all the pieces of wood are similarly oriented with respect to splinter and marrow gutters. Claims,. 1. Sätt att hos från en stock framställda virkesbitar identifiera den stockens märgomráde närmare liggande flatytan (märgytan) och den motsatta flatytan (splintytan), kännetecknat av att virkesbitarna får passera mellan åtminstone ett par mitt- emot varandra anordnade avkännare som är känsliga på skillnaden i ljusreflexionsförmâgan hos ytstrukturlinjerna och hos omgivande vedpartier på de avsökta ytorna, och att avkännarnas utsignaler tillförs som insignaler en komparator i vilken alstras en kompa- rator-utsignal av vilken identifieras som märgytan den yta, som har föranlett ett tätare insignalmönster, och som splintytan den yta, som har föranlett ett lösare signalmönster.1. In the case of pieces of wood produced from a log, the way to identify the marrow area of the log closer to the flat surface (the marrow surface) and the opposite flat surface (splinter surface), characterized in that the pieces of wood are passed between at least a pair of opposite sensors sensitive to the difference in the light reflectance of the surface structure lines and of surrounding wood portions on the scanned surfaces, and that the output signals of the sensors are supplied as input signals a comparator in which a comparator output signal is generated which is identified as the marrow surface, which has caused a denser input signal pattern. , which has caused a looser signal pattern. 2. Sätt enligt patentkrav 1, kánnetecknat av att vir- kesbiten avsöks av flera, utmed dess längd fördelade avkännarpar.A method according to claim 1, characterized in that the piece of wood is scanned by several sensor pairs distributed along its length. 3. Sätt enligt patentkrav l eller 2, kânnetecknat av att virkesbiten transporteras i tvärled förbi avkännarparet eller -paren.A method according to claim 1 or 2, characterized in that the piece of wood is transported transversely past the sensor pair or pairs. 4. Anordning för genomförande av förfarandet enligt något eller några av föregående patentkrav, kânnetecknad av att den innefattar åtminstone ett par mittemot varandra anordnade avkännare (20a, 20b) som är känsliga pà skillnaden i ljusrefle- xionsförmàgan hos ytstrukturlinjerna (L) på de avsökta ytorna (I, Y) och hos omgivande vedpartier, och att avkännarnas utsignaler (MI, Mly) tillförs en komparator (21) som är anordnad att alstra en komparator-utsignal vilken identifierar den yta, som har för- anlett ett lösare (tätare) signalmönster som splint- (märgytan).Device for carrying out the method according to one or more of the preceding claims, characterized in that it comprises at least a pair of sensors (20a, 20b) arranged opposite each other which are sensitive to the difference in the light reflectance of the surface structure lines (L) on the scanned surfaces. (I, Y) and in surrounding wood portions, and that the output signals of the sensors (MI, Mly) are supplied to a comparator (21) which is arranged to generate a comparator output signal which identifies the surface which has caused a looser (denser) signal pattern. as the splinter (marrow surface).
SE9000730A 1990-03-01 1990-03-01 SETTING AND DEVICE MAKING IDENTIFYING THE STOCK'S BACKGROUND FROM A STOCK MANUFACTURED BIT SE464105B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9000730A SE464105B (en) 1990-03-01 1990-03-01 SETTING AND DEVICE MAKING IDENTIFYING THE STOCK'S BACKGROUND FROM A STOCK MANUFACTURED BIT
DE4104501A DE4104501A1 (en) 1990-03-01 1991-02-14 Appts. for identifying core and sap surfaces of timber pieces
FI910757A FI910757A (en) 1990-03-01 1991-02-15 SAETT ATT AUTOMATISKT IDENTIFIERA FLATYTOR HOS RENSAOGADE VIRKESBITAR OCH ANORDNING FOER GENOMFOERANDE AV SAETTET.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9000730A SE464105B (en) 1990-03-01 1990-03-01 SETTING AND DEVICE MAKING IDENTIFYING THE STOCK'S BACKGROUND FROM A STOCK MANUFACTURED BIT

Publications (2)

Publication Number Publication Date
SE9000730D0 SE9000730D0 (en) 1990-03-01
SE464105B true SE464105B (en) 1991-03-04

Family

ID=20378729

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000730A SE464105B (en) 1990-03-01 1990-03-01 SETTING AND DEVICE MAKING IDENTIFYING THE STOCK'S BACKGROUND FROM A STOCK MANUFACTURED BIT

Country Status (3)

Country Link
DE (1) DE4104501A1 (en)
FI (1) FI910757A (en)
SE (1) SE464105B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235956C2 (en) * 1992-10-23 1995-09-28 Rwe Entsorgung Ag Use of electromagnetic waves in the UV and visible range to identify the materials by detecting the material structure
DE4241250C2 (en) * 1992-12-08 1996-04-11 Rwe Entsorgung Ag Method for identifying objects and device for carrying out the method
DE4241990C2 (en) * 1992-12-12 1997-02-06 Rwe Entsorgung Ag System for recognizing and sorting waste objects
AU6718194A (en) * 1993-04-29 1994-11-21 Centre De Recherche Industrielle Du Quebec Method and apparatus for sensing the color of articles and for classification thereof
SE9400849L (en) * 1994-03-08 1995-04-03 Soliton Elektronik Ab Device and method for detecting defects in wood
DE19547736A1 (en) * 1995-12-20 1997-06-26 Harald Engel Program selection system for processing machines
FI20011755A (en) * 2001-09-04 2003-03-05 Finnforest Oy Wood veneer analysis and sorting
FI116804B (en) 2004-05-18 2006-02-28 Ekspansio Engineering Ltd Oy Optical inspection of surfaces showing material in different directions

Also Published As

Publication number Publication date
FI910757A0 (en) 1991-02-15
DE4104501A1 (en) 1991-09-05
FI910757A (en) 1991-09-02
SE9000730D0 (en) 1990-03-01

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