WO2009015745A1 - Transmetteur inductif à liaison enfichable - Google Patents

Transmetteur inductif à liaison enfichable Download PDF

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Publication number
WO2009015745A1
WO2009015745A1 PCT/EP2008/005568 EP2008005568W WO2009015745A1 WO 2009015745 A1 WO2009015745 A1 WO 2009015745A1 EP 2008005568 W EP2008005568 W EP 2008005568W WO 2009015745 A1 WO2009015745 A1 WO 2009015745A1
Authority
WO
WIPO (PCT)
Prior art keywords
ferrite core
secondary coil
winding
primary coil
coil
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/EP2008/005568
Other languages
German (de)
English (en)
Other versions
WO2009015745A8 (fr
Inventor
Olaf Biese
Klaus Bachus
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.)
Knick Elektronische Messgeraete GmbH and Co KG
Original Assignee
Knick Elektronische Messgeraete GmbH and Co KG
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 Knick Elektronische Messgeraete GmbH and Co KG filed Critical Knick Elektronische Messgeraete GmbH and Co KG
Priority to EP08773922A priority Critical patent/EP2174326B1/fr
Publication of WO2009015745A1 publication Critical patent/WO2009015745A1/fr
Anticipated expiration legal-status Critical
Publication of WO2009015745A8 publication Critical patent/WO2009015745A8/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H01F2038/143—Inductive couplings for signals

Definitions

  • the invention relates to an inductive plug connection transformer with the features specified in the preamble of claim 1.
  • Such a connector transformer is known for example from WO 2004/047127 Al.
  • a connector transformer as it is used for the contactless transmission of data or power supply signals via a plug coupling consisting of a male and female part, on the one hand a primary coil having an axial winding length d2, on a core of ferromagnetic material with the axial length dl - hereinafter referred to as "ferrite core" - sitting.
  • the known connector transformer is provided with a secondary coil having an axial winding length d3.
  • the ferrite core primary coil unit is radially symmetrical and axially inserted into a transfer set position. In this protrudes the ferrite core with its inserted through the secondary coil, free end over the secondary coil axially out.
  • Characteristic of the prior art is the design of the dimensions and the position of the two windings of the primary and secondary coils to each other and to the ferrite core.
  • the ferrite core is immersed axially and radially symmetrically into the secondary coil.
  • it is common to select the lengths of the two coils equal to maximize the inductive coupling k, so d2 d3.
  • the invention has for its object to provide an inductive connector transformer whose coupling factor is less sensitive to a deviation of the relative positions of the individual components of the transformer from a desired position to each other.
  • the inductive plug-in transformer is thus characterized by: - staggered axial lengths of ferrite core, primary and secondary coils according to the relationship dl> d3> d2,
  • the invention is essentially based on a clever asymmetrical positioning of the individual transformer components relative to one another such that a displacement of the ferrite core primary coil unit in the secondary coil has significantly less effect on the coupling factor. In this case losses at the maximum possible coupling factor are deliberately accepted.
  • the primary winding is not axially symmetrical to the ferrite core, but on one side to that end of the - A -
  • Ferrite core shifted towards, which first dips into the secondary coil when plugging the inductive Steckitatisübertragers in the insertion direction.
  • the primary winding is displaced so far towards this free end of the ferrite core that the abovementioned supernatant d4 arises. That is, the primary winding protrudes in the axial direction beyond the secondary winding by the amount d4 when the transmission setpoint position is reached.
  • the primary winding moves into the secondary winding without leaving it again at the other end. Since the primary winding previously had a projection to the secondary winding, but now fully within the secondary winding, the inductive coupling between the coils has become larger due to the now smaller spatial distance.
  • the position of the ferrite core is shifted from the symmetrical position to the secondary winding in an asymmetrical position. This reduces the inductive coupling between the two coils. These two opposing effects achieve a compensatory effect.
  • the invention further relates to a sensor device to which the connector transformer is connected directly.
  • FIG. 1 is a schematic side view of a Steckitatisübertragers with ferrite core primary coil unit and secondary coil in a separate state, but with an axial assignment according to the transmission target position,
  • FIG. 2 shows a schematic axial view of a plug-in transformer in a plugged-together state
  • FIG. 3 shows a winding diagram for the primary and secondary coil with a division of the secondary coil into two partial windings
  • Fig. 4 is a winding diagram analogous to FIG. 3 in a further embodiment for the secondary coil
  • Fig. 5 is a partial axial section through a physical-chemical sensor device with directly flanged connector transformer.
  • the primary coil 1 consists of a single or preferably multi-layer winding 2 of the axial length d2 of an insulated wire or an insulated stranded wire.
  • the primary coil 1 is seated axially asymmetrically on the ferrite core 3 in a displaced to the free end 4 position.
  • the ferrite 3 held by a coil holding body 5, which also carries the two electrical terminals 6, 7 for the terminal ends 8, 9 of the winding 2.
  • a bobbin 10 is usually used for the enclosure of the winding 2, in the central cavity then the ferrite core 3 is seated.
  • the single or preferably multi-layer winding 2 may also be applied directly to the ferrite core 3.
  • Primary coil 1 and ferrite core 3 are firmly connected.
  • the secondary coil 11 in its basic configuration, a single or preferably multi-layer winding 12 which is wound on a corresponding bobbin 13.
  • the latter is also connected to a coil holding body 14 which carries the terminals 15, 16 for the terminal ends 17, 18 of the winding 12.
  • the winding 12 of the secondary coil 11 can be wound in a multi-layered manner over the axial winding length d3.
  • the secondary winding 12 is preferably divided into two partial windings 12. 1, 12. 2 by a separating web 19 which is arranged centrally in the axial direction A and runs around it annularly.
  • FIG. 3 simply shows that, for example, first the partial winding 12.1 is applied as a multilayer winding on one side of the separating web 19, then the winding is guided over the separating web 19 and the second partial winding is applied as a multi-layer winding.
  • the two partial windings 12.1, 12.2 are electrically connected to each other so that when feeding a current, the windings of the windings 12.1, 12.2 would generate the same direction partial magnetic fields.
  • the field lines of the two coils would thus point in the same direction and reinforce each other.
  • the equidirectional flooding at a feed of a current can be achieved by the partial windings 12.1, 12.2 are electrically connected either in series or in parallel.
  • the basic assignment of primary coil 1, ferrite core 3 and secondary coil 11 to one another will now be explained with reference to FIG.
  • the relationship d1> d3> d2 applies.
  • the respective lengths may, for example, differ by a factor of 1.5 to 2.5, i.
  • the ferrite core is about twice as long as the secondary coil, which in turn is about twice as long as the primary coil.
  • the ferrite core primary coil unit 1, 3 is pushed into this secondary coil 11 until the ferrite core 3 with its free end 4 sits in the position P1 relative to the secondary coil 11.
  • the primary winding 2 projects beyond the projection d4 beyond the edge 21 of the secondary winding 12 pointing in the insertion direction S.
  • the ferrite core 3 with its axial length d 1 again sits axially symmetrically with respect to the axial length d 3 of the secondary winding 12.
  • FIG 4 a further preferred embodiment for the winding of the secondary coil 11 is finally shown.
  • This is based on the consisting of two partial windings 12.1, 12.2 secondary coil according to Figure 3, but the partial windings 12.1, 12.2 are backed by a continuous base winding 22.
  • this winding configuration can be produced in that, during winding, a first continuous position of the coil wire is laid over the dividing web 19 along the total length d3 of the secondary coil 11. Subsequently, one of the two partial windings 12.1 or 12.2 is wound with the desired number of turns, then the winding wire is guided over the separating web 19 and there the second partial winding 12.2 or 12.1 is applied in the desired number of turns.
  • the windings 2, 12, 12.1, 12.2 and any continuous base winding 22 may consist of an insulated wire or an insulated strand.
  • the windings 2, 12, 12.1, 12.2 and any continuous base winding 22 may also be constructed cantilevered as so-called "baked-on" bobbins.
  • the connector transformer can be accommodated with its secondary coil 11 in a socket part 25 of a designated as a whole with 26 connector.
  • the ferrite core primary coil unit 1, 3 is seated in a corresponding plug part 27 of the connector 26, which is removable from the socket part 25.
  • the mechanical connection between the female and male parts 25, 27 is ensured by a coupling ring 28 sealed against these two parts by ring seals 28, 29.
  • the mechanical design of this connector 26 is incidentally the subject of the earlier German patent application 10 2006 022 713 of the Applicant.
  • the connector 26 with the integrated connector transformer according to the present invention is used for measuring and energy technology connection of a sensor device for measuring a chemical or physical measurement parameter.
  • a pH measuring sensor 31 is shown in sections, to which a sensor head 32 is fixedly connected.
  • a circuit 33 (not shown) for conditioning the pH measuring signals brought by the pH measuring sensor 31 via a signal line 34 is accommodated.
  • the female part 25 of the connector 26 is connected to the secondary coil 11 of the invention Steckitatisübertragers.
  • the plug part 27 with the ferrite core primary coil unit 1, 3 is also provided with a circuit 35, by means of which on the one hand control and power supply signals which are brought via the transmission line 36 from a higher-level unit, such as a field device, for transmission via connector transformer be prepared.
  • a higher-level unit such as a field device
  • the measurement signals are processed according to the return transmission via the connector transformer.
  • the power supply of this circuit 33 is derived from the above-mentioned power supply signals.
  • sensors for example, for temperature detection or other sensors, such as oxygen or conductivity measuring sensors using the Steckitatisübertragers invention signal and Energyversor- supply technology to be connected to a higher-level unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

Selon l'invention, un transmetteur inductif à liaison enfichable comprend - une âme en ferrite (3) d'une longueur axiale d1, - une bobine primaire (1) posée sur l'âme en ferrite (3) et dont la longueur axiale de l'enroulement est d2, - une bobine secondaire (11) dont la longueur axiale d'enroulement est d3, l'unité (1, 3) d'âme en ferrite et de bobine primaire pouvant être insérée symétriquement dans le sens radial et axialement dans une position de consigne de transfert (P1) dans laquelle l'âme en ferrite (3) déborde axialement de la bobine secondaire (11) par son extrémité libre (4) enfoncée à travers la bobine secondaire, - une position de l'âme en ferrite axialement symétrique par rapport au bobinage secondaire, - des longueurs axiales de l'âme en ferrite (3), de la bobine primaire (1) et de la bobine secondaire (11) échelonnées selon la relation d1 > d3 > d2, - un positionnement déplacé axialement de manière asymétrique de la bobine primaire (1) sur l'âme en ferrite (3) en direction de son extrémité libre (4) - et un positionnement de la bobine primaire (1) dans la position de consigne de transfert (P1) à l'intérieur de la bobine secondaire (11) tel que la bobine primaire (1) déborde axialement de la bobine secondaire (11) sur une longueur partielle avec un débord d4 < d2.
PCT/EP2008/005568 2007-08-02 2008-07-09 Transmetteur inductif à liaison enfichable Ceased WO2009015745A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08773922A EP2174326B1 (fr) 2007-08-02 2008-07-09 Transmetteur inductif à liaison enfichable

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200710036626 DE102007036626B4 (de) 2007-08-02 2007-08-02 Induktiver Steckverbindungsübertrager
DE012007036626.6 2007-08-02
DE102007036626.6 2007-08-02

Publications (2)

Publication Number Publication Date
WO2009015745A1 true WO2009015745A1 (fr) 2009-02-05
WO2009015745A8 WO2009015745A8 (fr) 2010-04-22

Family

ID=39772998

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/005568 Ceased WO2009015745A1 (fr) 2007-08-02 2008-07-09 Transmetteur inductif à liaison enfichable

Country Status (3)

Country Link
EP (1) EP2174326B1 (fr)
DE (1) DE102007036626B4 (fr)
WO (1) WO2009015745A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013187777A3 (fr) * 2012-06-11 2014-07-31 Powerbyproxi Limited Tore doté d'une certaine perméabilité magnétique, et destiné à être employé dans des systèmes de transfert de puissance sans fil
US11043841B2 (en) 2016-05-25 2021-06-22 Apple Inc. Coil arrangement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013021798A1 (de) * 2013-12-23 2015-06-25 Epcos Ag Sensoranordnung, Sensoranordnungssystem und Satz von Sensoranordnungselementen
US9988870B2 (en) 2015-07-31 2018-06-05 Cameron International Corporation System and method for non-invasive power and data transmission
DE102023202369A1 (de) * 2023-03-16 2024-09-19 Knick Elektronische Messgeräte GmbH & Co. KG Primärverbindungsteil, insbesondere Steckverbindungsteil, für eine Verbindungseinrichtung zum induktiven Übertragen von Signalen, Set, Verbindungseinrichtung und Messvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4038625A (en) * 1976-06-07 1977-07-26 General Electric Company Magnetic inductively-coupled connector
DE2732626A1 (de) * 1976-08-08 1978-02-09 Nippon Soken Verbindungsvorrichtung zur uebertragung logischer signale
DE10130615A1 (de) * 2001-06-26 2003-01-09 Siemens Ag Verbindungsvorrichtung für einen Sensor oder Aktor
WO2004047127A1 (fr) * 2002-11-19 2004-06-03 Huntleigh Technology Plc Connecteur a couplage inductif

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006022713B4 (de) 2006-05-12 2018-11-08 Knick Elektronische Messgeräte GmbH & Co. KG Steckverbinder zur Übertragung von Signalen, insbesondere zur kontaktlosen induktiven Übertragung von Messsignalen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4038625A (en) * 1976-06-07 1977-07-26 General Electric Company Magnetic inductively-coupled connector
DE2732626A1 (de) * 1976-08-08 1978-02-09 Nippon Soken Verbindungsvorrichtung zur uebertragung logischer signale
DE10130615A1 (de) * 2001-06-26 2003-01-09 Siemens Ag Verbindungsvorrichtung für einen Sensor oder Aktor
WO2004047127A1 (fr) * 2002-11-19 2004-06-03 Huntleigh Technology Plc Connecteur a couplage inductif

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013187777A3 (fr) * 2012-06-11 2014-07-31 Powerbyproxi Limited Tore doté d'une certaine perméabilité magnétique, et destiné à être employé dans des systèmes de transfert de puissance sans fil
US9859051B2 (en) 2012-06-11 2018-01-02 Powerbyproxi Limited Magnetically permeable core for use in wireless power transfer systems
US11043841B2 (en) 2016-05-25 2021-06-22 Apple Inc. Coil arrangement

Also Published As

Publication number Publication date
DE102007036626B4 (de) 2012-03-22
EP2174326B1 (fr) 2012-06-20
EP2174326A1 (fr) 2010-04-14
WO2009015745A8 (fr) 2010-04-22
DE102007036626A1 (de) 2009-02-05

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