WO2008031630A1 - Récipient et dispositif pour détecter des objets qui se trouvent dans un espace intérieur du récipient - Google Patents

Récipient et dispositif pour détecter des objets qui se trouvent dans un espace intérieur du récipient Download PDF

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Publication number
WO2008031630A1
WO2008031630A1 PCT/EP2007/008287 EP2007008287W WO2008031630A1 WO 2008031630 A1 WO2008031630 A1 WO 2008031630A1 EP 2007008287 W EP2007008287 W EP 2007008287W WO 2008031630 A1 WO2008031630 A1 WO 2008031630A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
coil
interior
coils
antenna
Prior art date
Application number
PCT/EP2007/008287
Other languages
German (de)
English (en)
Inventor
Stephan Guttowski
Michael Niedermayer
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Publication of WO2008031630A1 publication Critical patent/WO2008031630A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K7/10316—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 using at least one antenna particularly designed for interrogating the wireless record carriers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K7/10316—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 using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10336—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 using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • 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
    • B65D2201/00—Means or constructions for testing or controlling the contents
    • 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

  • the present invention relates to a container having at least one antenna for detecting objects located in an interior of the container with transponders according to the preamble of claim 1.
  • the invention further relates to a corresponding device for detecting objects located in an interior of a container ,
  • Such containers can be used in the context of monitoring systems for goods flows in logistics.
  • a typical task is a determination and control of goods contained in a certain volume, such as a transport container. Since it should not be required to elaborate electronic devices on the goods themselves, so that too much effort is avoided, this is the RFID technology (Radio Frequency Identification) with passive RFID tags as a transponder.
  • RFID technology Radio Frequency Identification
  • the at least one antenna is now designed as a coil, wherein a coil forming the conductor extends along a wall of the container.
  • Corresponding containers according to the prior art provide that, in the case of a substantially cuboidal container shape, such an antenna designed as a planar coil is arranged on each of six container walls.
  • the object of the present invention is therefore to propose a corresponding container for detecting objects located in an interior space of the container, which avoids the described disadvantages.
  • a container With such a container, it should thus be possible to reliably detect objects which are provided with transponders even in a design with relatively thin container walls and also in relatively large container dimensions in the interior of the container, and thereby to accidentally detect objects located outside the container and preclude interference with articles and in particular metallic objects outside the container that impairs reliable detection.
  • the invention is further based on the object to develop a corresponding device for detecting objects located in an interior of a container objects.
  • transponders which are located in the interior of the container and therefore also substantially within the coil can be detected very reliable, regardless of what is outside the container.
  • shielding components may be provided in or on the wall of the container without thereby influencing a field generated by means of the coil such that a Detection of the transponder would be appreciably affected because at least in the direction of a corresponding coil axis, a relatively large distance to the shielding component can be maintained.
  • the wall of the container may otherwise be made of plastic, for example, or another dielectric material.
  • detecting is Objects in a container designed according to the invention with a relatively low energy consumption possible, even with comparatively large dimensions of the container.
  • the container or the interior of the container which may for example be cuboid, have a (largest or smallest) diameter or edge lengths in a range of between 10 cm and 250 cm.
  • the antenna is designed for detecting transponders by means of passive radio communication, that is to say for detecting passive transponders.
  • the term of the transponder is to be understood in the present document so general that it includes in particular the preferred case of transponders that do not send their own signal, but merely load a field generated by the antenna, so that they are detected by load modulation of this field can.
  • the transponders should be simple electronic tags or RFID tags known per se in the context of RFID technology.
  • the coil will normally have a relatively low number of turns and, for example, have 5 to 10 turns.
  • the term coil is again to be understood in such a general way that it may even have only a single turn.
  • the coil encloses the interior of the container.
  • a straight connecting line between two opposite points of a turn of the coil passes through the interior.
  • Preferred embodiments of the invention provide that different portions of the coil forming the conductor along two opposing wall portions of the container extend.
  • the container is equipped with at least two, better with at least three antennas of different orientation, which can then be controlled so that an electromagnetic field generated thereby for detecting - so preferably for passive radio communication with - objects regardless of a current orientation of the objects is suitable.
  • all the antennas mentioned are preferably designed as coils enclosing the interior in the described manner.
  • Three different coil axes of the antennas should span the three-dimensional space, so that a transponder and thus an object can be detected independently of its orientation, without the transponder itself having to be unnecessarily complicated.
  • a particularly simple structure and a particularly simple evaluation of a response behavior of the transponder arise when three coil axes of three antennas are perpendicular to each other as possible.
  • the coil forming the conductor may be guided within the wall of the container, where it is particularly well protected, or be guided on an inner side of the container along the wall, whereby at a given wall thickness, an advantageously large distance to objects located outside of the container also results in a lying in Spulenwindungsebene direction.
  • a relatively large distance can thus also be maintained to any shielding component provided in or on the wall of the container.
  • Crucial remains that in any case a relatively large distance of the coil or of a coil center to the wall of the container can be maintained by the arrangement of the coil surrounding the interior of the container in the direction of a coil axis.
  • a particular embodiment of the invention provides that at least one coil winding of the antenna or at least one of the antennas is guided over a lid of the container and is designed so that this coil winding is interrupted by opening the lid.
  • Another embodiment of the invention provides that the coil or at least one of the coils or each coil is oriented so that the corresponding coil axis is perpendicular to a spatial diagonal of the container.
  • the inner space is encompassed by the corresponding spool so that a particularly good detection of a container contents independently of objects outside the container is possible, and on the other hand it is thus possible in a particularly simple manner to bypass a lid of the container with the conductor in that the coil is not interrupted by opening the lid. A detection of objects located in the container is then possible even with the container open.
  • At least three, more preferably four, of such coils are provided, which are accordingly oriented with coil axes perpendicular to three or four different spatial diagonals of the container.
  • the respective coil with a winding course essentially borrowed along a line of intersection of the corresponding room diagonals are designed with the wall.
  • this conductor can also be guided around an opening of the container which can be closed by the lid such that the conductor is guided out of a plane perpendicular to a coil axis standing defined, curved out or bent course has.
  • portions of the coil forming the conductor between two points at which the conductor is bent or curved at one edge of the opening be guided along the edge of the opening.
  • At least two coil windings of common orientation are arranged offset in the direction of a common coil axis.
  • These can be different coil windings of a single antenna or different identically oriented antennas. This can achieve a better coverage of the interior of the container by the field generated by means of the antenna or the antennas.
  • the coil of an antenna described type can be designed with windings lying substantially in one plane or also with a larger extent in the direction of the coil axis.
  • at least one coil turn preferably the entire coil, should be arranged so that it lies substantially in the middle between two ends of the container opposite the coil axis direction or one from each of these ends Distance of at least 20% - preferably at least 30% - a distance between the two ends.
  • a corresponding device for detecting objects located in an interior of a container comprises, in addition to a container of the type described, a reader connected to the at least one antenna, also referred to as a reader, which under certain circumstances may be integrated in the container.
  • a reader connected to the at least one antenna
  • such a device also includes a plurality of transponders, which, as stated, in preferred embodiments of the invention are designed as passive transponders, that is to say for example as electronic labels or RFID tags. Accordingly, articles in the container provided with the transponders can be detected by passive radio communication, and information stored in the transponders can be read out.
  • FIG. 1 shows a perspective, schematic representation of a container according to an embodiment of the present invention
  • FIG. 2 shows the container of FIG. 1 in an opened state in the same representation
  • FIG. 3 is a representation, corresponding to FIG. 1, of a container in another embodiment of the invention.
  • Figure 4 shows the container shown accordingly FIG. 3 in the opened state
  • Figure 5 shows a container in a third embodiment of the invention Phyg and
  • Figure 6 in a similar representation, the container of Figure 5 in the open state.
  • FIG. 1 Shown in FIG. 1 is a container 1, with the aid of which information of electronic labels which are attached to objects located in the container 1 can be read out, so that a device comprising the container 1 and a corresponding reader, in particular for detecting in the container 1 located, provided with the electronic labels items is suitable.
  • the electronic labels of the objects not shown in FIG. 1 and also in the following figures are also referred to in the present specification as transponders and are typically designed as passive RFID tags which are suitable for load modulation of an electromagnetic field and thus readable.
  • the container 1 is parallelepipedic and has a wall made of a plastic, which can carry on one outer side a shielding layer of metal, and a correspondingly designed cover 2.
  • the container 1 now has a first coil 3, a second coil 4 and a third Coil 5, each forming an antenna (RFID antenna) for detecting an object provided with a transponder in an interior of the container, wherein a respective coil 3, 4 or 5 forming conductor extends along the wall of the container that the Coil the Interior of the container 1 encloses. It is provided that the respective coil 3, 4 or 5 forming conductor is guided within the wall of the container 1.
  • Other comparable embodiments of the invention provide that the conductor is instead guided on an inner side of the container 1 along the wall.
  • the coils 3, 4 and 5 are arranged in particular so that different sections of the respective coil 3, 4 or 5 forming conductor along two opposing wall sections of the container 1 extend.
  • the coils 3, 4 and 5 each have a small number of about 5 turns.
  • FIG. 1 to the right of the container 1 a coordinate system is shown which has an x-axis lying horizontally in the plane of the drawing, a vertical z-axis and a y-axis pointing into the plane of the drawing.
  • the turns of the first coil 3 extend in this coordinate system in the yz plane, so that it has a coil axis pointing in the x direction.
  • the second coil 4 has a course lying in the xz plane and a coil axis lying in the direction of the y axis
  • the third coil 5 extends in the xy plane and has a coil axis lying in the direction of the z axis.
  • the coil axes of the three coils 3, 4 and 5 are therefore perpendicular to each other. In this case, all windings of each of the coils 3, 4 and 5 are substantially in a plane which divides the interior of the container 1 in the corresponding direction substantially centrally.
  • the same container 1 is shown once more in FIG. 2, the lid 2 being slightly unfolded here about a hinge 7. It can be seen that the coil turns of the first coil and the second coil 4 are interrupted thereby. There are see the cover 2 and the container 1 locks provided by the electrical contact between the various sections of the coils 3 and 4 forming conductor is electrically connected again when closing the lid 2.
  • FIGS. 3 and 4 Another embodiment of the present invention is shown in FIGS. 3 and 4. Recurring features are, as in the other figures, again provided with the same reference numerals.
  • the container shown in FIGS. 3 and 4 has a first coil 3, a second coil 4, a third coil 5 and a fourth coil 6.
  • the conductors forming the coils 3, 4 and 5 are guided around an opening of the container which can be closed by the cover 2, so that none of the coils 3 to 6 is interrupted by opening the cover 2.
  • a detection of objects located in the container 1 is therefore possible with the container 1 shown in Figures 3 and 4, even with the lid 2 open.
  • the conductors forming the coils 3, 4 and 5 are led out at an edge of the cover 2 from a plane which is defined as perpendicular to the corresponding coil axis.
  • the coil axis of the coils 3 and 4 can be identified with the x-axis of Figure 1, the third coil 5 with the y-axis. It turns out that the course of the the corresponding coil 3, 4 or 5 forming conductor has an almost negligible influence on the detection of the transponder.
  • the first coil 3 and the second coil 4 is in the embodiment of Figures 3 and 4 to a single antenna, wherein the coils 3 and 4 are arranged offset in the direction of their common coil axis, so that the interior of the container 1 by a through the coils 3, 4, 5 and 6 formed electromagnetic field is better covered.
  • the first coil 3 instead of the first coil 3 to provide two or more offset in the direction of the x-axis arranged coils.
  • the third exemplary embodiment illustrated in FIGS. 5 and 6 differs from the exemplary embodiments described above only by a different arrangement of the antennas. Also in this embodiment, a first coil 3, a second coil 4, a third coil 5 and a fourth coil 6 are provided, each of the coils 3, 4, 5 and 6 forming one of four antennas.
  • a course of the coils 3, 4, 5 and 6 is indicated only by lines, in the case of the first coil 3 by a solid line, in the case of the second coil 4 by a dashed line, in the case the third coil 5 by a line consisting of dots and dashes and in the case of the fourth coil 6 by a dotted line.
  • the coils 3, 4, 5 and 6 are each oriented so that their coil axes are perpendicular to four different spatial diagonals of the container 1.
  • Each of the coils 3, 4, 5 and 6 has a winding course in which the corresponding coil 3, 4, 5 or 6 bil- dende conductor is essentially guided along a line of intersection of the corresponding spatial diagonal with the wall of the container.
  • the coils 3, 4, 5 and 6 are placed so that an opening of the cover 2, none of the coils 3, 4, 5 or 6 interrupts, so that a detection of objects located in the container 1 even with the lid 2 is possible is.
  • an electromagnetic field generated by the antennas is suitable for passive radio communication with objects located in the interior of the container 1, regardless of their orientation.
  • the RFID antennas are not arranged as planar coils on each wall section of the container 1, but as spatial coils 3, 4, 5 or 8 around a volume formed by the container 1.
  • tags to be read out are no longer adjacent to the corresponding antenna, but within the coil 3, 4, 5 or 6 forming the antenna.
  • the coil 3, 4, 5 or 6 thus encloses the transponders or tags in the container 1 and can thus do a great deal be more effective. This fact can be seen in Figures 1 to 6, even if the tags themselves are not shown there.
  • FIG. 1 In a particularly simple case, as shown in FIG. 1, only three coils 3, 4 and 5 are required, of which one is provided for each spatial direction in order to allow the transponders or tags an arbitrary position in the container 1. Equally, it would also be possible to arrange a plurality of RFID antennas per spatial direction distributed over a geometric extension in the coil axis direction. This way you can probably a total energy requirement per antenna and the energy consumption requirement to reduce and / or realize a higher readout reliability. Also, even larger containers can be used.
  • the containers shown in Figures 1 to 6 have dimensions of about 200 cm in the x-direction, 100 cm in the y-direction and 100 cm in the z-direction.
  • FIG. 2 With the novel coils 3, 4 and 5, with an appropriate design of the container 1, monitoring of the lid 2 can take place at the same time, since the turns of the coils 3 and 4 are interrupted by opening the lid 2.
  • FIGS. 3 and 4 show variations of the antenna coils, which make it possible to read the tags even when the container 1 is open.
  • FIGS. 5 and 6 show a further variant of the coil arrangement. Compared to the embodiment of Figures 3 and 4 an embodiment corresponding to Figures 5 and 6 is easier to implement, because the coils 3, 4, 5 and 6 are designed here pla- nar. Avoiding a winding guide over the cover 2 is achieved here by an arrangement parallel to the spatial diagonal of the volume formed by the container 1.
  • Advantages of the arrangement proposed by the present invention are, in particular, lower energy consumption, the possibility of shielding at volume limits without significantly impairing a detection process, avoiding detuning of the antennas by metal surfaces (for example tail lifts) outside the container 1 and - not least of all - in one higher reliability when reading out the transponder typically given by tags (RFID tags).
  • the present invention proposes, in particular, a closable container, for example a transport container, with at least one antenna for detecting objects provided with transponders in an interior of the container, wherein the at least one antenna surrounds the interior of the container as one Coil is cited and a coil forming the conductor along a wall of the container extends, preferably within this wall or directly adjacent to the wall.
  • a closable container for example a transport container
  • the at least one antenna surrounds the interior of the container as one Coil is cited and a coil forming the conductor along a wall of the container extends, preferably within this wall or directly adjacent to the wall.
  • the wall of the container is at least partially made of a dielectric material, while the at least one coil rests against an inside of this wall or is embedded in the wall near the inside, and preferably on the outside of the wall over its entire area or in a surrounding area. tion of the coil forming the conductor, a metal layer is provided. As a result, a reliable detection of the transponder is independent of external fields possible without the coil protruding disturbing into the interior.

Abstract

La présente invention concerne un récipient (1) comprenant au moins une antenne pour détecter des objets munis de transpondeurs qui se trouvent dans un espace intérieur du récipient (1). Selon l'invention, la ou les antennes sont réalisées sous la forme de bobine (3, 4, 5) et un conducteur formant la bobine (3, 4, 5) s'étend le long d'une paroi du récipient (1) et entoure l'espace intérieur du récipient (1). L'invention concerne également un dispositif qui, en plus d'un tel récipient (1), comprend un lecteur relié avec la ou les antennes.
PCT/EP2007/008287 2006-09-13 2007-09-13 Récipient et dispositif pour détecter des objets qui se trouvent dans un espace intérieur du récipient WO2008031630A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006043786.1 2006-09-13
DE200610043786 DE102006043786A1 (de) 2006-09-13 2006-09-13 Behälter und Vorrichtung zum Detektieren von in einem Innenraum des Behälters befindlichen Gegenständen

Publications (1)

Publication Number Publication Date
WO2008031630A1 true WO2008031630A1 (fr) 2008-03-20

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WO (1) WO2008031630A1 (fr)

Cited By (2)

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WO2008033574A2 (fr) * 2006-09-13 2008-03-20 Clearcount Medical Solutions, Inc. appareil et procédés pour surveiller des objets dans un champ chirurgical
WO2010109412A1 (fr) * 2009-03-23 2010-09-30 Satyatek Sa Systeme et procede pour la lecture d ' un ou de plusieurs tags rfid dans une cassette metallique avec un protocol anticollision

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DE102019211607B4 (de) 2019-08-01 2024-03-14 Vega Grieshaber Kg Messgerät mit Nahfeldantenne

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US6703935B1 (en) * 2001-05-14 2004-03-09 Amerasia International Technology, Inc. Antenna arrangement for RFID smart tags
WO2005041354A1 (fr) * 2003-10-29 2005-05-06 Matsushita Electric Industrial Co., Ltd. Antenne cadre

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US5990794A (en) * 1996-09-26 1999-11-23 Sensormatic Electronics Corporation Apparatus for data communication and deactivation of electronic article surveillance tags
GB2360422B (en) * 2000-03-15 2004-04-07 Texas Instruments Ltd Improvements in or relating to radio ID device readers

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US20020021208A1 (en) * 2000-08-11 2002-02-21 Nicholson Mark R. RFID passive repeater system and apparatus
US6703935B1 (en) * 2001-05-14 2004-03-09 Amerasia International Technology, Inc. Antenna arrangement for RFID smart tags
WO2005041354A1 (fr) * 2003-10-29 2005-05-06 Matsushita Electric Industrial Co., Ltd. Antenne cadre

Cited By (17)

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US9530036B2 (en) 2006-09-13 2016-12-27 Stryker Combo L.L.C. Methods for monitoring objects in a surgical field
US8256674B2 (en) 2006-09-13 2012-09-04 Clearcount Medical Solutions, Inc. Apparatus and methods for monitoring objects in a surgical field
WO2008033574A2 (fr) * 2006-09-13 2008-03-20 Clearcount Medical Solutions, Inc. appareil et procédés pour surveiller des objets dans un champ chirurgical
US8181860B2 (en) 2006-09-13 2012-05-22 Clearcount Medical Solutions, Inc. Apparatus and methods for monitoring objects in a surgical field
US9672397B2 (en) 2006-09-13 2017-06-06 Stryker Combo L.L.C. Apparatus and methods for monitoring objects in a surgical field
US8479989B2 (en) 2006-09-13 2013-07-09 Clearcount Medical Solutions, Inc. Apparatus and methods for monitoring objects in a surgical field
US8985446B2 (en) 2006-09-13 2015-03-24 Stryker Combo L.L.C. Apparatus and methods for monitoring objects in a surgical field
US11963827B2 (en) 2006-09-13 2024-04-23 Stryker Corporation Apparatus and methods for monitoring objects in a surgical field
US11793591B2 (en) 2006-09-13 2023-10-24 Stryker Corporation Apparatus and methods for monitoring objects in a surgical field
WO2008033574A3 (fr) * 2006-09-13 2009-04-30 Clearcount Medical Solutions I appareil et procédés pour surveiller des objets dans un champ chirurgical
US9414973B2 (en) 2006-09-13 2016-08-16 Stryker Combo L.L.C. Apparatus and methods for monitoring objects in a surgical field
US9974625B2 (en) 2006-09-13 2018-05-22 Stryker Combo L.L.C. Apparatus and methods for monitoring objects in a surgical field
US10729510B2 (en) 2006-09-13 2020-08-04 Stryker Corporation Apparatus and methods for monitoring objects in a surgical field
US11090129B2 (en) 2006-09-13 2021-08-17 Stryker Corporation Apparatus and methods for monitoring objects in a surgical field
US11116598B1 (en) 2006-09-13 2021-09-14 Stryker Corporation Apparatus and methods for monitoring objects in a surgical field
WO2010109412A1 (fr) * 2009-03-23 2010-09-30 Satyatek Sa Systeme et procede pour la lecture d ' un ou de plusieurs tags rfid dans une cassette metallique avec un protocol anticollision
US9727757B2 (en) 2009-03-23 2017-08-08 Satyatek Sa System and method for reading one or more RFID tags in a metal cassette with an anticollision protocol

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