CA2000274A1 - Classifying objects - Google Patents

Classifying objects

Info

Publication number
CA2000274A1
CA2000274A1 CA002000274A CA2000274A CA2000274A1 CA 2000274 A1 CA2000274 A1 CA 2000274A1 CA 002000274 A CA002000274 A CA 002000274A CA 2000274 A CA2000274 A CA 2000274A CA 2000274 A1 CA2000274 A1 CA 2000274A1
Authority
CA
Canada
Prior art keywords
presented
viewers
rough determination
succession
viewing
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
CA002000274A
Other languages
French (fr)
Other versions
CA2000274C (en
Inventor
Martin Phillip Smith
Colin David Saunders
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.)
Spandrel Establishment
Original Assignee
Martin Phillip Smith
Colin David Saunders
Spandrel Establishment
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 Martin Phillip Smith, Colin David Saunders, Spandrel Establishment filed Critical Martin Phillip Smith
Publication of CA2000274A1 publication Critical patent/CA2000274A1/en
Application granted granted Critical
Publication of CA2000274C publication Critical patent/CA2000274C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B07C5/04—Sorting according to size
    • B07C5/10—Sorting according to size measured by light-responsive means

Abstract

Objects are dropped in succession through a viewing zone, where they are viewed in bright field illumination by three viewers along orthogonal axes, using radiation of different wave-lengths (or viewing in rapid succession). The viewers sense the presented area. The presented areas are compared in a microprocessor in order to obtain a rough determination of the shape of the object. The presented areas can be e.g. summated to obtain a rough determination of the size of the object.
CA002000274A 1988-10-07 1989-10-06 Classifying objects Expired - Fee Related CA2000274C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888823570A GB8823570D0 (en) 1988-10-07 1988-10-07 Sorting
GB8823570 1988-10-07

Publications (2)

Publication Number Publication Date
CA2000274A1 true CA2000274A1 (en) 1990-04-07
CA2000274C CA2000274C (en) 2001-03-27

Family

ID=10644866

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002000274A Expired - Fee Related CA2000274C (en) 1988-10-07 1989-10-06 Classifying objects

Country Status (7)

Country Link
US (1) US5010247A (en)
AU (1) AU618628B2 (en)
BE (1) BE1005257A5 (en)
CA (1) CA2000274C (en)
GB (2) GB8823570D0 (en)
IE (1) IE62464B1 (en)
IL (1) IL91892A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL101612A0 (en) * 1992-04-16 1992-12-30 Electro Optics Ind Ltd Apparatus and method for inspecting articles such as agricultural produce
GB2273154B (en) * 1992-12-02 1996-12-11 Buehler Ag Method for cleaning and sorting bulk material
NL9300596A (en) * 1993-04-05 1994-11-01 Aweta Bv Method and device for measuring shape parameters of objects.
AU9554798A (en) 1997-10-31 1999-05-24 Pioneer Hi-Bred International, Inc. Method of sorting and categorizing seed
EP3207901B1 (en) 2009-02-25 2022-06-22 Spinewelding AG Spine stabilization device
GB2504052B (en) * 2012-03-16 2017-05-10 De Beers Uk Ltd Sorting aggregate material

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480141A (en) * 1967-08-30 1969-11-25 George E Lauer Photoelectric system for grading objects according to length and width
FR1555808A (en) * 1967-12-11 1969-01-31
US3549008A (en) * 1969-01-16 1970-12-22 Ronald L Anderson Photoelectric sizing and sorting apparatus
GB1274449A (en) * 1969-10-08 1972-05-17 Gunsons Sortex Ltd Sorting apparatus and a method of sorting
US3708065A (en) * 1970-08-27 1973-01-02 Amsted Ind Inc Measuring and sorting apparatus
US3650397A (en) * 1970-11-19 1972-03-21 Sensors Inc System for inspecting and classifying objects such as screws, bolts and the like while in motion
US3774040A (en) * 1972-05-10 1973-11-20 Lauer G Photoelectric system for grading objects according to size
US4057146A (en) * 1974-05-24 1977-11-08 Xeltron, S.A. Optical sorting apparatus
CA1008018A (en) * 1974-07-04 1977-04-05 Roderick J. Gordon Wide path separator with channel overlap logic
GB1571889A (en) * 1976-03-11 1980-07-23 Gec Medical Equipment Ltd Separating apparatus
US4120403A (en) * 1976-06-28 1978-10-17 George E. Lauer Photoelectric apparatus for sorting variegated articles according to size
US4132314A (en) * 1977-06-13 1979-01-02 Joerg Walter VON Beckmann Electronic size and color sorter
US4246098A (en) * 1978-06-21 1981-01-20 Sunkist Growers, Inc. Method and apparatus for detecting blemishes on the surface of an article
FR2528972A1 (en) * 1982-06-22 1983-12-23 Duneau Patrick Opto-electronic fruit diameter measuring appts. - projects real size shadow of fruit on plane with photoreceivers arranged in V=shape
GB2142426B (en) * 1983-06-30 1986-09-17 Gunsons Sortex Ltd Sorting machine and method
GB8425273D0 (en) * 1984-10-05 1984-11-14 Spandrel Etab Signal responsive to parameter of objects
GB8425274D0 (en) * 1984-10-05 1984-11-14 Spandrel Etab Signal responsive to parameter of objects
GB8523567D0 (en) * 1985-09-24 1985-10-30 Rhoden Partners Ltd Sorting articles
ZA867411B (en) * 1985-09-30 1987-09-30 Cra Services Classifier
NL8503130A (en) * 1985-11-14 1987-06-01 Cornelis Bruyn Counting and measuring system for horticultural products - uses infrared or ultrasound beams to detect falling bulbs and tubers
GB8531396D0 (en) * 1985-12-20 1986-02-05 Gersan Ets Sorting
FR2595589A1 (en) * 1986-03-13 1987-09-18 Beaumont Laurent Device for sorting mushrooms according to the length of their stems
US4878582A (en) * 1988-03-22 1989-11-07 Delta Technology Corporation Multi-channel bichromatic product sorter
US4915827A (en) * 1988-05-19 1990-04-10 Trebor Industries, Inc. Method and apparatus for optical sorting of materials using near infrared absorbtion criteria

Also Published As

Publication number Publication date
BE1005257A5 (en) 1993-06-15
CA2000274C (en) 2001-03-27
GB8823570D0 (en) 1988-11-16
GB2225107A (en) 1990-05-23
IE62464B1 (en) 1995-02-08
IL91892A0 (en) 1990-06-10
AU618628B2 (en) 1992-01-02
IE893210L (en) 1990-04-07
IL91892A (en) 1992-11-15
AU4265989A (en) 1990-04-12
US5010247A (en) 1991-04-23
GB8922458D0 (en) 1989-11-22
GB2225107B (en) 1993-02-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed