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WO1994016407A1 - Procede et systeme de detection d'objets - Google Patents

Procede et systeme de detection d'objets Download PDF

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Publication number
WO1994016407A1
WO1994016407A1 PCT/GB1994/000044 GB9400044W WO9416407A1 WO 1994016407 A1 WO1994016407 A1 WO 1994016407A1 GB 9400044 W GB9400044 W GB 9400044W WO 9416407 A1 WO9416407 A1 WO 9416407A1
Authority
WO
WIPO (PCT)
Prior art keywords
transponders
detection zone
carriage
detector
objects
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.)
Ceased
Application number
PCT/GB1994/000044
Other languages
English (en)
Inventor
Richard Vahrman
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.)
MULTILOP Ltd
Original Assignee
MULTILOP Ltd
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 MULTILOP Ltd filed Critical MULTILOP Ltd
Priority to AU58368/94A priority Critical patent/AU5836894A/en
Publication of WO1994016407A1 publication Critical patent/WO1994016407A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07796—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements on the record carrier to allow stacking of a plurality of similar record carriers, e.g. to avoid interference between the non-contact communication of the plurality of record carriers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
    • G06K7/10079—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2203/00—Decoration means, markings, information elements, contents indicators
    • B65D2203/10—Transponders

Definitions

  • This invention relates to a method of, and a system for, detecting a plurality of objects arranged in stacked relationship.
  • the invention relates, particularly, though not exclusively, to the detection of stacked containers as they leave and enter storage areas in supermarkets.
  • a method of detecting a plurality of objects arranged in stacked relationship comprising providing each object in said plurality of objects with a respective tag, providing a detector having a linear detection zone to sense said tags and causing relative movement between said plurality of objects and said linear detection zone, wherein the tags are arranged to lie in a line and said linear detection zone is inclined at an angle to said line.
  • each tag when there is relative movement between the stack and the detection zone, each tag enters the detection zone of the detector at a different time.
  • the tags are, preferably, transponders.
  • the transponders may be passive or active devices and may signal a code identifying the associated object and may also signal other information such as, in the case of a container, the contents of the container.
  • a stack is meant an arrangement where the objects are placed one above the other in a vertical direction or side-by-side in a horizontal direction.
  • the detection zone is at an acute angle to the direction of travel whilst the transponders are aligned substantially normal to the direction of travel.
  • the detector may have an antenna defining the linear detection zone.
  • the antenna is a loop antenna since this is easily formed and provides a well defined detection zone because of its narrow reception lobe.
  • a system for detecting objects arranged in stacked relationship comprising a plurality of tags, each being associated with a respective object so that the tags lie in a line, and a detector having a linear detection zone inclined at an angle to said line.
  • Figure 1 shows a sequence of side views as a group of trays pass a detector
  • Figure 2 shows comparative side views for two different angles of detection zone
  • Figures 3 and 4 show side views of food trays being detected by detection methods using two detection zones
  • FIG. 5 shows a side view of a dolly detection system.
  • a dolly 1 is provided with a transponder 2a during its manufacture. Stacked upon the dolly 1 are a plurality of nominally identical trays 3a,3b and 3c, each having a transponder 2b,2c and 2d respectively. All the transponders are of a known type each having a memory device, a transmitter and receiver. The memory device contains a unique identity code and can also be programmed with a code representing the contents of the tray.
  • a loop aerial 4 is arranged by a doorway to a storeroom of a supermarket (not shown) at an acute angle to a direction of travel 6 of the dolly 1.
  • the loop aerial 4 has a circumference of 1.8 metres and width of 7.62 cm which produces a detection zone 5 represented by shading in the drawing.
  • the loop aerial 4 is connected to a detector (not shown) which reads and decodes the signals received by the aerial but also alternately transmits via the aerial 4 an r.f. signal.
  • the aerial 4 has a 100 mm wide detection zone 5 and the read interval is 70 ms.
  • the transponder must leave the detection zone 5 no earlier than 140 ms after entering it in order to read the data satisfactorily.
  • the dolly 1 is made to move no faster than 0.7 metres/second. The speed may be increased by increasing the detection zone width or reducing the read time.
  • the transponders (2a,2b,2c,2d) are disposed vertically, one above another, and the loop aerial 4 is inclined at an acute angle ⁇ * ⁇ relative to the vertical.
  • transponder 2a As the dolly 1 and trays 3 stacked thereon move in the direction of arrow 6 (Figure la) transponder 2a enters the detection zone 5.
  • the transponder is powered in a manner well known by energy received during the detector transmission cycle, and using the stored energy, responds with a signal including its unique identifier.
  • Transponder 2a then leaves the detection zone 5 and transponder 2b of the first tray 3a enters ( Figure lb) the zone.
  • This transponder is powered and responds in the same manner as transponder 2a. However, in addition to its unique identifier it also transmits a code representative of the contents of the tray 3a.
  • Figures lc and Id show the entry of transponders 2c and 2d respectively.
  • FIG. 2 shows how the selectivity of the detector can be increased by reducing the slope of detection zone 5.
  • the separation of the trays is such that the transponders e.g. 2e and 2f of adjacent trays both lie within the detection zone 5 at the same time. The transponders will thus be energised and read at the same time leading to a misread.
  • the detection zone 5 is made longer and inclined further to decrease the angle between it and the direction of travel 6.
  • the detection zone 5 is made longer and inclined further to decrease the angle between it and the direction of travel 6.
  • FIG 2b requires a relatively long detection zone 5 and a correspondingly long aerial 4. Where this is inconvenient for reasons of space, a more compact arrangement may be used of two loop aerials and associated detection zones 5a and 5b, as shown in Figure 3.
  • the dolly 1 and trays 3a,3b and 3c pass through and are read by a lower aerial 4b while the remaining trays are read by an upper aerial 4a.
  • two transponders may be read simultaneously but it does not lead to a misread because each aerial 4a,4b feeds a respective channel of the detector.
  • the dolly 1 may be loaded with two vertical stacks 7 and 8 of trays side-by-side, as shown in Figure 4. This can lead to two transponders being read simultaneously as shown in Figure 4a, leading to an ambiguity.
  • Figure 4(b) shows an arrangement provided with two aerials 4a, 4b spaced apart in the direction of travel 6 and arranged to read upper and lower trays of the stacks respectively. The aerials 4a,4b supply the signals to the same receiver channel but no ambiguity results because of the spatial separation of the detection zones which ensures that only one transponder lies in a detection zone at a given time.
  • the distribution of trays amongst the stacks can be determined by running the dolly past the detector at a controlled speed and noting the relative times at which the transponders are read. For example, if it takes 1 second for the dolly to move past the antenna, readings made after 0.5s will be derived from trays in the trailing stack on the dolly.
  • a beam interruption method could be used to detect tray positions.
  • Figure 5 shows a preferred method in which an additional loop aerial 9 having a castellated form of detection zone aligned with the direction of travel is used to read and hence detect the position of the dolly transponder 2a as it crosses the castellations 9a to 9e. In this way it is possible to determine the position of the tray which is being detected within the detection zone by correlating it with the position of the dolly 1 detected by the loop aerial 9.
  • the trays are moved past the detection zone in other embodiments the detection zone may be arranged to pass the trays.
  • the invention has applicability to methods and systems for the detection of stacked objects, particularly though not exclusively, such objects as are stored in warehouses, supermarkets and the like.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne un procédé et un système permettant de détecter la présence d'une pluralité d'objets (1, 3) se déplaçant collectivement le long d'un sens de déplacement (6). Le procédé consiste à apposer une étiquette (2) sur chaque objet, à ménager un détecteur comportant une antenne (4) afin de détecter la présence de l'étiquette le long d'une zone de détection (5) au niveau d'un premier angle par rapport au sens de déplacement (6), à placer les objets (1, 3) de sorte que les étiquettes (2) soient pratiquement alignées au niveau d'un second angle par rapport au sens de déplacement (6) différent du premier angle et à faire déplacer collectivement les objets (1, 3) dans la zone de détection (5). En alignant les étiquettes (2) à un angle différent dans le sens du déplacement (6) par rapport à celui de la zone de détection (5), celles-ci (2) pénètrent dans la zone de détection et sont lues à différents moments, évitant ainsi que beaucoup ne soient lues à tout moment.
PCT/GB1994/000044 1993-01-13 1994-01-11 Procede et systeme de detection d'objets Ceased WO1994016407A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU58368/94A AU5836894A (en) 1993-01-13 1994-01-11 A method of, and a system for, detecting objects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9300603A GB2274373B (en) 1993-01-13 1993-01-13 A method of,and a system for,detecting objects
GB9300603.9 1993-01-13

Publications (1)

Publication Number Publication Date
WO1994016407A1 true WO1994016407A1 (fr) 1994-07-21

Family

ID=10728668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1994/000044 Ceased WO1994016407A1 (fr) 1993-01-13 1994-01-11 Procede et systeme de detection d'objets

Country Status (3)

Country Link
AU (1) AU5836894A (fr)
GB (1) GB2274373B (fr)
WO (1) WO1994016407A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030414A1 (fr) * 1996-02-15 1997-08-21 Etablissements Bourgogne Et Grasset Dispositif de rangement pour jetons de jeu
US7382229B2 (en) 2005-04-07 2008-06-03 Gaming Partners International Method of managing a plurality of electronic microcircuit chip readers and equipments for implementing said method

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313049C2 (de) * 1993-04-21 1996-05-15 Michael L Hoeffgen Transportbehälter
DE9417863U1 (de) * 1994-11-08 1995-01-05 Müller, Gotthard, 97941 Tauberbischofsheim Warenbehältnis mit einem Transponder
JP3412532B2 (ja) 1998-09-25 2003-06-03 三菱マテリアル株式会社 物品の識別装置
WO2001003058A1 (fr) * 1999-07-01 2001-01-11 Intermec Ip Corp. Mise en place de transpondeurs rfid sur des supports tres rapproches
DE19950532A1 (de) * 1999-10-20 2001-07-12 Schoeller Plast Ag Wiederverwendbares Beförderungsmittel mit Transponder
DE50113613D1 (de) * 2000-03-30 2008-04-03 Feig Electronic Gmbh Scannerstation
EP1139278A3 (fr) * 2000-03-31 2001-10-17 Hitachi, Ltd. Méthode de lecture d'information d'un support de données fixé à des objets empilés
EP1139282B1 (fr) * 2000-03-31 2011-09-21 Hitachi, Ltd. Boîtier de carte ic et méthode pour lire de l'information du support de données
JP3797072B2 (ja) * 2000-08-04 2006-07-12 オムロン株式会社 非接触識別システム，非接触識別方法及びアンテナコイル
EP1344178B1 (fr) * 2000-12-20 2004-06-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dispositif et procede de lecture simultanee de transducteurs inductifs passifs
ES2285905B1 (es) * 2005-08-24 2008-10-01 Aida Centre, S.L. Metodo e instalacion para la monitorizacion del contenido de un recinto de almacenamiento.
GB2439539A (en) * 2006-06-28 2008-01-02 Rentacrate Ltd Stack-nest container with visual identification and management/ tracking system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120729A1 (fr) * 1983-03-25 1984-10-03 L'oreal Procédé et dispositif de détection de la position d'objets stockés sur palettes, support de repères de position et ensemble de détection comprenant un tel dispositif et de tels supports
WO1985002282A1 (fr) * 1983-11-14 1985-05-23 Radiation Dynamics, Inc. Procede et dispositif permettant d'accepter de maniere selective des rangees de conteneurs en vue d'un traitement
EP0322701A2 (fr) * 1987-12-17 1989-07-05 Omron Tateisi Electronics Co. Système d'identification des sources mobiles de données
EP0494764A1 (fr) * 1991-01-09 1992-07-15 Texas Instruments Incorporated Poste d'interrogation pour identifier des objets transportés sur un convoyeur
EP0496611A1 (fr) * 1991-01-23 1992-07-29 Texas Instruments Holland B.V. Système d'antenne pour un poste d'interrogation d'identification d'objets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120729A1 (fr) * 1983-03-25 1984-10-03 L'oreal Procédé et dispositif de détection de la position d'objets stockés sur palettes, support de repères de position et ensemble de détection comprenant un tel dispositif et de tels supports
WO1985002282A1 (fr) * 1983-11-14 1985-05-23 Radiation Dynamics, Inc. Procede et dispositif permettant d'accepter de maniere selective des rangees de conteneurs en vue d'un traitement
EP0322701A2 (fr) * 1987-12-17 1989-07-05 Omron Tateisi Electronics Co. Système d'identification des sources mobiles de données
EP0494764A1 (fr) * 1991-01-09 1992-07-15 Texas Instruments Incorporated Poste d'interrogation pour identifier des objets transportés sur un convoyeur
EP0496611A1 (fr) * 1991-01-23 1992-07-29 Texas Instruments Holland B.V. Système d'antenne pour un poste d'interrogation d'identification d'objets

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030414A1 (fr) * 1996-02-15 1997-08-21 Etablissements Bourgogne Et Grasset Dispositif de rangement pour jetons de jeu
FR2745103A1 (fr) * 1996-02-15 1997-08-22 Bourgogne Grasset Dispositif de rangement pour jetons de jeu
US7382229B2 (en) 2005-04-07 2008-06-03 Gaming Partners International Method of managing a plurality of electronic microcircuit chip readers and equipments for implementing said method

Also Published As

Publication number Publication date
GB2274373B (en) 1996-12-04
GB2274373A (en) 1994-07-20
AU5836894A (en) 1994-08-15
GB9300603D0 (en) 1993-03-03

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