EP0394714A2 - Identifizierungsvorrichtung mit induktiver Antennen-Ankopplung - Google Patents

Identifizierungsvorrichtung mit induktiver Antennen-Ankopplung Download PDF

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Publication number
EP0394714A2
EP0394714A2 EP90106406A EP90106406A EP0394714A2 EP 0394714 A2 EP0394714 A2 EP 0394714A2 EP 90106406 A EP90106406 A EP 90106406A EP 90106406 A EP90106406 A EP 90106406A EP 0394714 A2 EP0394714 A2 EP 0394714A2
Authority
EP
European Patent Office
Prior art keywords
antenna
transmitter
insert
transformer
insert member
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
EP90106406A
Other languages
English (en)
French (fr)
Other versions
EP0394714B1 (de
EP0394714A3 (de
Inventor
Bruno G. Viereck
Josef Schuermann
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.)
Texas Instruments Deutschland GmbH
Original Assignee
Texas Instruments Deutschland GmbH
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 Texas Instruments Deutschland GmbH filed Critical Texas Instruments Deutschland GmbH
Publication of EP0394714A2 publication Critical patent/EP0394714A2/de
Publication of EP0394714A3 publication Critical patent/EP0394714A3/de
Application granted granted Critical
Publication of EP0394714B1 publication Critical patent/EP0394714B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set

Definitions

  • the invention relates to an identification device consisting of a transmitter and receiver section and an antenna con­nected thereto via an antenna coupling.
  • Identification devices of the type according to the preamble can be used for sending interrogation pulses to transponders carried for example by animals and receiving data trans­mitted by the transponders as reaction to the interrogation pulses. Since the range of the signals transmitted by the transponders is not very large the antenna of the identi­fication device is so constructed that it can easily be brought into the vicinity of a transponder to be interro­gated. However, this makes the antenna bulky and long, so that the identification device cannot easily be transported. In particular in mobile use, for example by veterinary surgeons or government inspectors, this would however be desirable.
  • the antenna coupling systems available fail due to soiling.
  • the known antenna couplings have a galvanic connection and the plug-type connections used are easily soiled.
  • plug-type connections under rough use con­ditions bending of the connection contacts can easily occur so that the entire identification device then no longer functions.
  • an identification device It is therefore desirable to equip an identification device with a contactless antenna coupling.
  • This can be implemented basically with an antenna coupling with inductive coupling.
  • the particular problem is encountered here of making the inductively coupled antenna coupling mechanically stable and electrically functionable even under rough ambient conditions.
  • the cores can each be formed by a pot core half. This gives a great reduction in stray fields.
  • pot core halves of a pot core transformer E cores may also be employed for the cores.
  • the antenna coupling is accordingly formed substantially from an antenna mounting flange mounted on the transmitter and receiver section, an antenna-side antenna tube support and a coupling ring for screwing the antenna tube support to the antenna mounting flange.
  • An antenna coupling made in this way is simple to manipulate and permits in simple manner a water-tight connection of the antenna to the housing of the transmitter and receiver section so that the identifi­cation device is suitable for use in moist and chemically aggressive surroundings. Due to the simple construction this configuration represents an economic alternative to the comparatively very expensive water-tight connectors.
  • the aforementioned embodiment can be further developed by a stop ring on the antenna tube support corresponding to the features of claim 4.
  • the coupling ring thus remains ready to grip even on the antenna detached from the transmitter and receiver section.
  • the edge of the coupling ring covers the end of the antenna tube member so that the diaphragm closing the antenna tube member is advantageously protected from damage.
  • a further advantageously developed antenna coupling is set forth in claims 9 to 11.
  • the particular advantage of this embodiment resides in that by the specific configuration of the bayonet fastener with few parts a robust and easily manipulatable connection is provided.
  • the embodiment according to claim 12 utilizes the previously mentioned advantageous bayonet fastener.
  • the diaphragm covering the antenna-side transformer half is pro­tected particularly effectively from mechanical damage by the projecting edge of the antenna tube support.
  • Claims 13 and 14 relate to specific further developments of the antenna belonging to the identification device.
  • the antenna can accordingly be dismantled or reassembled and in the assembled state at its bending point it has substantially the same stability with respect to bending stresses as an antenna made in one part.
  • An identification device 10 consists according to the schematic representation in Fig. 1 substantially of a trans­mitter and receiver section 12 and an antenna 14.
  • the trans­mitter and receiver section 12 and the antenna 14 are de­tachably connected to each other via an antenna coupling 16.
  • the antenna 14 is bent at its free end and is preferivelyably connected via the antenna coupling 16 to the transmitter and receiver section 12 in such a manner that the bent portion of the antenna 14 points obliquely downwardly when the identification device 10 is in a horizontal position.
  • the entire identification device 10 may be held at a grip 17.
  • the antenna coupling 16 illustrated in Fig. 2 is an induct­ive coupling which connects the antenna 14 to the transmitter and receiver section 12 without using galvanic contacts.
  • the central part of the antenna coupling 16 is a two-part transformer 18 which in the example of embodiment illus­trated in Fig. 2 is a pot core transformer.
  • a first pot core half 20 is disposed with its winding 21 in the trans­mitter and receiver section 12 whilst a second pot core half 22 is disposed with its winding 23 in the antenna 14.
  • the two pot core halves 20, 22 are associated with each other in such a manner that the windings 21, 23 are induct­ively coupled, a gap 24 being present between the pot core halves 20, 22.
  • the pot core half 22 is disposed centrally in an antenna mounting flange 30.
  • the latter is sealed towards the antenna 14 by a diaphragm 26.
  • both the antenna mounting flange 30 and the diaphragm 26 are made integrally from plastic.
  • the antenna mounting flange 30 is screwed to the housing 31 of the transmitter and receiver 12 using a seal.
  • the pot core 20 in the interior of the antenna mount­ing flange 30 is centered by a pot core holder 40 and pressed by the latter via a rubber spring 41 against the diaphragm 26.
  • the pot core holder 40 itself is screwed to a trans­mitter mounting plate 42 in the transmitting and receiving section 12.
  • the rubber spring 41 consists preferably of sponge rubber adhesive on both sides.
  • the antenna 14 is held with one end in an antenna support 32.
  • the end of the antenna support 32 facing the antenna mounting flange 30 is sealed with a diaphragm 28 which is preferably adhesively attached.
  • the second pot core half 22 is pressed by a pot core holder 43 bearing on the antenna support 32 via a rubber spring 44 against the diaphragm 28.
  • the pot core holder 43 serves not only as abuttment for pressing the pot core 22 against the diaphragm 28 but also as holding means for a printed circuit board 45 on which an antenna damping circuit is disposed.
  • a coupling ring 34 Arranged on the antenna support 32 is a coupling ring 34 by means of which the antenna support 32 can be screwed to the antenna mounting flange 30.
  • the two diaphragms 26 and 28 are pressed against each other so that between the two pot core halves 20 and 22 a gap is formed corresponding sub­stantially to the thickness of the two diaphragms 26 and 28.
  • Said stop ring 38 serves to prevent the coupling ring 34 slipping off the antenna support 32 in the released state.
  • the groove 36 with the stop ring 38 is arranged an axial distance from the diaphragm 28 which is smaller than the length of the outer surface of the coupling ring 34 so that the latter protectively surrounds the diaphragm 28 even in the disassembled state of the antenna 14.
  • a ring antenna may also be employed, the construction of the antenna coupling 16 in the manner described being retained.
  • a second embodiment of the antenna coup­ling 16 is shown.
  • an insert region 50 is disposed into which an antenna-side insert member 52 can be inserted.
  • the insert region 50 has a rectangular cross-­section, the cross-sectional area being substantially in two stages. In the outer portion of the insert region the cross-sectional area is broader than in the inner portion of the insert region 50, as can be seen in Fig 3b
  • the insert member 52 is fixed in the insert region 50 by a snap means consisting of projections 56 which are arranged in the insert region 50 and which can enter detent engagement with recesses 58 correspondingly provided in the insert member 52.
  • the first pot core half 20 is disposed in a side wall 54 of the insert region 50 behind the diaphragm 26.
  • the second pot core half 22 is arranged in the insert member 52 in such a manner that in the engaged state of the insert member 52 it lies opposite the first pot core half 20.
  • a projection 64 is formed on the side of the insert member 52 lying opposite the second pot core half 22. Said projection bears in the engaged state on a side wall of the insert region 50, the cross sectional area of which as described above is small compared with that of the outer insert region.
  • the purpose of reducing the cross-sectional area is for the insert member 52 to be easily insertable in the outer insert region without resistance whilst in the inner insert region it must be fixed in a position in which a defined gap is set between the two pot core halves 20 and 22. This is ensured by bearing of the projection 64 on the wall portion of the insert region 50 corresponding thereto.
  • a gap 24 is formed between the two pot core halves and corresponds substantially to the thickness of the two diaphragms 26 and 28.
  • the embodiment shown in Figs. 3a and 3b is distinguished in particular by its robustness; it withstands mechanical stresses particularly well.
  • This embodiment in particular is made insensitive by a simple constructional form also to soiling which in the region of the antenna coupling 16 can otherwise easily lead to functional disturbance.
  • a pro­tection against soiling is first formed by an antenna-side hood 62 which in the engaged state covers the opening of the insert region 50.
  • a cavity 60 is formed in the engaged state between the insert member 52 and the insert region 50 . The latter serves to receive any dirt particles possibly present in the insert region 50 prior to insertion of the insert member 52, said particles being pushed along the insert region 50 by the inserted insert member 52 into the cavity 60.
  • a pot core transformer is used.
  • an E core transformer may also be employed.
  • the example of embodiment of the antenna coupling 15 illus­trated in Fig. 4a contains similarly to the previously des­cribed example of embodiment an insert region 70 which is arranged in the transmitter and receiver section 12 and an antenna-side insert member 72 insertable into said region 70.
  • the insert region 70 and the insert member 72 in this case however have a circular cross-section and the two pot core halves 20, 22 after engagement of the insert member 72 in the insert region 70 lie opposite each other centrally at the bottom 74.
  • the insert member 72 consists essentially of a core portion 79 and a sleeve 80 which is adhered there­to and which is sealed with a diaphragm 28 at its end face 76.
  • the second pot core half 22 is pressed against the dia­phragm 28 by means of a spring 81 bearing against the core portion 79.
  • the insert member 52 is detachably anchored in the insert region 50 by a bayonet fastener 78.
  • the two studs 82 of the bayonet fastener 78 are integrally formed on the sleeve 80. The studs may be inserted into the stud guide 83 and locked by rotating the entire insert member 72.
  • FIG. 4b shows firstly the stud guide 83 in the insert region 70. Above the hori­zontally extending portion of the stud guide 83 in the insert region 70 a recess 84 is disposed so that between the horizontally extending portion of the stud guide 83 and the recess 84 only a narrow web 85 is left. Both the studs 82 and the two webs 85 have an elasticity due to their material properties.
  • the stud 82 on starting the pivoting of the respective stud 82 into the horizontally extending portion of the stud guide 83 is deflected so that the stud 82 can be pushed beneath the web 85. Due to its deflection the stud 82 is under stress. As a result a pressure force originating from the stud 82 is exerted on the web 85. This pressure force generates in the resilient web 85 a trough-like deformation as illustrated in Fig. 4b. By this trough the stud 82 is fixed in the horizontally extending portion of the stud guide 83. Of course, the stud 82 can be turned out of this locking position again by appropriate rotation of the insert member 72.
  • the embodiment of the antenna coupling 16 shown in Fig. 5 comprises similarly to the embodiment according to Fig. 1 an antenna mounting flange 90 disposed on the transmitter and receiver section.
  • an antenna support 92 is formed with an edge 94 having an internal diameter corresponding substantially to the external diameter of the antenna mounting flange 90 so that the antenna support 92 can be pushed in sleeve-like manner over the antenna mount­ing flange 90.
  • the antenna mounting flange 90 and the antenna support 92 can be connected together via a bayonet fastener 98.
  • the mode of operation of the bayonet fastener 98 corresponds substantially to that of the bayonet fastener 78 in the example of embodiment according to Fig. 4a.
  • the antenna mounting flange 90 is also sealed by a diaphragm 26.
  • the diaphragm 26 is immediately adjoined by the first pot core half 20.
  • a bottom 96 is surrounded by the edge 94 in the antenna support 92. Said bottom is covered by the diaphragm 28, immediately behind which the second pot core half 22 is disposed.
  • the antenna 14 can be automatically brought into the correct working position with respect to the transmitter and receiver section 12. In this working position, as shown in Fig. 1 and already explained in the description thereof, the inclined portion of the antenna 14 points obliquely down­wardly when the identification device 10 is aligned horizontally.
  • Fig. 6 an embodiment of the antenna 14 is shown which is advantageous in particular when the relatively long antenna must be folded into a handy form.
  • the antenna 14 is divided into two parts and can be folded together about a joint 100.
  • a tube member 102 is displaceably arranged in such a manner that in the collapsed antenna it is retracted into a tube member and in the assembled antenna 14 projects into the two antenna tube members so that the latter can no longer be pivoted about the joint 100.
  • the tube member 102 is longitudinally displaceable in the antenna tube in the direction of the arrow a and oppositely to said direction via a stirrup member 104 projecting out of a slot provided in the antenna 14.

Landscapes

  • Near-Field Transmission Systems (AREA)
  • Support Of Aerials (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Details Of Aerials (AREA)
EP90106406A 1989-04-12 1990-04-04 Identifizierungsvorrichtung mit induktiver Antennen-Ankopplung Expired - Lifetime EP0394714B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3912034 1989-04-12
DE3912034A DE3912034C1 (de) 1989-04-12 1989-04-12

Publications (3)

Publication Number Publication Date
EP0394714A2 true EP0394714A2 (de) 1990-10-31
EP0394714A3 EP0394714A3 (de) 1991-07-03
EP0394714B1 EP0394714B1 (de) 1997-07-09

Family

ID=6378528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106406A Expired - Lifetime EP0394714B1 (de) 1989-04-12 1990-04-04 Identifizierungsvorrichtung mit induktiver Antennen-Ankopplung

Country Status (3)

Country Link
EP (1) EP0394714B1 (de)
AT (1) ATE155288T1 (de)
DE (2) DE3912034C1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523271A1 (de) * 1991-07-18 1993-01-20 Texas Instruments Deutschland Gmbh Schaltungsanordnung zur Antennenankopplung
EP0523272A1 (de) * 1991-07-18 1993-01-20 Texas Instruments Deutschland Gmbh Schaltungsanordnung zur Erzielung einer konstanten Feldstärke eines HF-Signals, ausgestrahlt vor einem Sendegerät mit austauschbarer Antenne
FR2704986A1 (fr) * 1993-05-03 1994-11-10 Motorola Inc Antenne pour appareil électronique.
FR2736227A1 (fr) * 1995-06-30 1997-01-03 Bio Medic Data Systems Inc Antenne pour programmer un repondeur d'identification
GB2404094A (en) * 2003-07-17 2005-01-19 Thales Plc A contact-less two part electrical connector
GB2433843A (en) * 2003-07-17 2007-07-04 Thales Holdings Uk Plc Contactless two-part electrical connector
EP2581994A1 (de) * 2011-10-13 2013-04-17 Tyco Electronics Nederland B.V. Kontaktlose Steckdose und kontaktloses Steckdosensystem
EP2581993A1 (de) * 2011-10-13 2013-04-17 Tyco Electronics Nederland B.V. Kontaktlose Steckdose und kontaktloses Steckdosensystem
EP1875171B1 (de) * 2005-03-24 2018-04-11 M & FC Holding, LLC System und verfahren zur übermittlung von verbrauchsmessdaten von einem verbrauchszähler zu einer entfernten erfassungsstelle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215255A1 (de) * 1992-05-09 1993-11-11 Aeg Mobile Communication Koaxialsteckvorrichtung und Funkgeräteanordnung
FI955125A (fi) * 1995-10-27 1997-04-28 Nokia Mobile Phones Ltd Antennin liitäntä

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2274147A1 (fr) * 1974-06-07 1976-01-02 British Steel Corp Dispositif pour brancher et debrancher plusieurs parties separables d'un appareillage electrique
FR2297525A1 (fr) * 1975-01-08 1976-08-06 Pelcon Ltd Connecteur electrique a induction
DE8532245U1 (de) * 1985-11-12 1986-02-27 Ebinger, Klaus, 5000 Köln Metallsuchgerät
JPS61174607A (ja) * 1985-01-28 1986-08-06 Tetsuo Ishii 電磁誘導結合式コネクタ
US4621243A (en) * 1984-12-30 1986-11-04 Harada Kogyo Kabushiki Kaisha Transmission channel coupler for antenna

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101198A1 (de) * 1981-01-16 1982-09-02 Robert Bosch Gmbh, 7000 Stuttgart "an der kleidung zu befestigendes funkempfangsgeraet mit eingebauter antenne"

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2274147A1 (fr) * 1974-06-07 1976-01-02 British Steel Corp Dispositif pour brancher et debrancher plusieurs parties separables d'un appareillage electrique
FR2297525A1 (fr) * 1975-01-08 1976-08-06 Pelcon Ltd Connecteur electrique a induction
US4621243A (en) * 1984-12-30 1986-11-04 Harada Kogyo Kabushiki Kaisha Transmission channel coupler for antenna
JPS61174607A (ja) * 1985-01-28 1986-08-06 Tetsuo Ishii 電磁誘導結合式コネクタ
DE8532245U1 (de) * 1985-11-12 1986-02-27 Ebinger, Klaus, 5000 Köln Metallsuchgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 384 (E-466)(2441) 23 December 1986, & JP-A-61 174607 (TETSUO ISHI) 06 August 1986, *

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523271A1 (de) * 1991-07-18 1993-01-20 Texas Instruments Deutschland Gmbh Schaltungsanordnung zur Antennenankopplung
EP0523272A1 (de) * 1991-07-18 1993-01-20 Texas Instruments Deutschland Gmbh Schaltungsanordnung zur Erzielung einer konstanten Feldstärke eines HF-Signals, ausgestrahlt vor einem Sendegerät mit austauschbarer Antenne
US5349357A (en) * 1991-07-18 1994-09-20 Texas Instruments Incorporated Circuit arrangement for obtaining a constant field strength of an HF signal radiated by a transmitting device with exchangeable antenna
AU659166B2 (en) * 1991-07-18 1995-05-11 Texas Instruments Deutschland Gmbh Circuit arrangement for obtaining a constant field strength of an HF signal radiated by a transmitted device with exchangeable antenna
FR2704986A1 (fr) * 1993-05-03 1994-11-10 Motorola Inc Antenne pour appareil électronique.
EP0658280A1 (de) * 1993-05-03 1995-06-21 Motorola, Inc. Antenne für ein elektronisches gerät
EP0658280A4 (de) * 1993-05-03 1995-09-20 Motorola Inc Antenne für ein elektronisches gerät.
US5508709A (en) * 1993-05-03 1996-04-16 Motorola, Inc. Antenna for an electronic apparatus
FR2736227A1 (fr) * 1995-06-30 1997-01-03 Bio Medic Data Systems Inc Antenne pour programmer un repondeur d'identification
NL1003466C2 (nl) * 1995-06-30 1998-11-03 Bio Medic Data Systems Inc Antenne voor het programmeren van een transponder.
GB2404094B (en) * 2003-07-17 2008-01-02 Thales Plc Electrical connector
WO2005015583A1 (en) * 2003-07-17 2005-02-17 Thales Uk Plc Electrical connector
GB2433843A (en) * 2003-07-17 2007-07-04 Thales Holdings Uk Plc Contactless two-part electrical connector
US7252565B2 (en) 2003-07-17 2007-08-07 Thales Holdings Uk Plc Electrical connector
GB2404094A (en) * 2003-07-17 2005-01-19 Thales Plc A contact-less two part electrical connector
GB2433843B (en) * 2003-07-17 2008-01-02 Thales Holdings Uk Plc Electrical connector
EP1875171B1 (de) * 2005-03-24 2018-04-11 M & FC Holding, LLC System und verfahren zur übermittlung von verbrauchsmessdaten von einem verbrauchszähler zu einer entfernten erfassungsstelle
WO2013053731A1 (en) * 2011-10-13 2013-04-18 Tyco Electronics Nederland Bv Contactless plug connector and contactless plug connector system
WO2013053714A1 (en) * 2011-10-13 2013-04-18 Tyco Electronics Nederland Bv Contactless plug connector and contactless plug connector system
EP2581993A1 (de) * 2011-10-13 2013-04-17 Tyco Electronics Nederland B.V. Kontaktlose Steckdose und kontaktloses Steckdosensystem
CN104040802A (zh) * 2011-10-13 2014-09-10 泰科电子连接荷兰公司 非接触式插接连接器和非接触式插接连接器系统
CN104145384A (zh) * 2011-10-13 2014-11-12 泰科电子连接荷兰公司 无接触插塞连接器和无接触插塞连接器系统
JP2015503254A (ja) * 2011-10-13 2015-01-29 ティーイー コネクティビティ ネーデルランド ビーヴイＴＥ Ｃｏｎｎｅｃｔｉｖｉｔｙ Ｎｅｄｅｒｌａｎｄ ＢＶ 非接触プラグコネクタ及び非接触プラグコネクタシステム
CN104040802B (zh) * 2011-10-13 2016-08-17 泰科电子连接荷兰公司 非接触式插接连接器和非接触式插接连接器系统
CN104145384B (zh) * 2011-10-13 2017-03-29 泰科电子连接荷兰公司 无接触插塞连接器和无接触插塞连接器系统
US9634439B2 (en) 2011-10-13 2017-04-25 Te Connectivity Nederland B.V. Contactless plug connector and contactless plug connector system
US9825673B2 (en) 2011-10-13 2017-11-21 Te Connectivity Nederland Bv Contactless plug connector and contactless plug connector system
EP2581994A1 (de) * 2011-10-13 2013-04-17 Tyco Electronics Nederland B.V. Kontaktlose Steckdose und kontaktloses Steckdosensystem

Also Published As

Publication number Publication date
DE69031008T2 (de) 1998-01-08
DE69031008D1 (de) 1997-08-14
EP0394714B1 (de) 1997-07-09
EP0394714A3 (de) 1991-07-03
ATE155288T1 (de) 1997-07-15
DE3912034C1 (de) 1990-10-25

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