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DE102006044057A1 - Wireless power supply system for multiple electronic devices e.g. sensors, actuators has at least one field reinforcement or deflection unit that is brought into magnetic field such that resonance is adjusted - Google Patents

Wireless power supply system for multiple electronic devices e.g. sensors, actuators has at least one field reinforcement or deflection unit that is brought into magnetic field such that resonance is adjusted Download PDF

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Publication number
DE102006044057A1
DE102006044057A1 DE102006044057A DE102006044057A DE102006044057A1 DE 102006044057 A1 DE102006044057 A1 DE 102006044057A1 DE 102006044057 A DE102006044057 A DE 102006044057A DE 102006044057 A DE102006044057 A DE 102006044057A DE 102006044057 A1 DE102006044057 A1 DE 102006044057A1
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Prior art keywords
field
magnetic field
deflection unit
resonance
sensors
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German (de)
Inventor
Berthold Dipl.-Ing. Dilger
Rolf Dr. Disselnkötter
Jean Dr.-Ing. Schutz
Richard Dipl.-Ing. Steigmann
Christian Dipl.-Ing. Willmes
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ABB Patent GmbH
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ABB Patent GmbH
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

Es wird ein System zur drahtlosen Versorgung einer Vielzahl von Sensoren und/oder Aktoren und/oder anderer Elektronik vorgeschlagen, wobei mindestens eine von einem mittelfrequenten Oszillator gespeiste Primärwicklung ein Magnetfeld zur drahtlosen Versorgung dieser Geräte mit elektrischer Energie erzeugt und wobei jedes dieser Geräte mindestens eine zur Energieaufnahme aus dem mittelfrequenten Magnetfeld geeignete Sekundärwicklung aufweist. Es wird mindestens eine Feldverstärkungs- oder Ablenkungseinheit (4, 4.1, 4.2, 6) in das durch die Primärwicklung erzeugte Magnetfeld mit einem gewünschten Neigungswinkel eingebracht, wobei die Feldverstärkungs- oder Ablenkungseinheit (4, 4.1, 4.2, 6) aus einem auf Resonanz mit dem Magnetfeld abgeglichenen ungedämpften Schwingkreis gebildet und derart im Magnetfeld ausgerichtet ist, dass das über den resultierenden hohen Resonanzstrom erzeugte Hilfsfeld einen abgeschatteten Feldbereich erreicht und die dort verfügbare Feldstärke verstärkt.It is proposed a system for wireless supply of a variety of sensors and / or actuators and / or other electronics, wherein at least one of a medium frequency oscillator fed primary winding generates a magnetic field for wireless supply of electrical energy to these devices and wherein each of these devices at least one for Energy absorption from the medium-frequency magnetic field has suitable secondary winding. At least one field enhancement or deflection unit (4, 4.1, 4.2, 6) is introduced into the magnetic field generated by the primary winding at a desired angle of inclination, the field amplification or deflection unit (4, 4.1, 4.2, 6) from resonating with the magnetic field balanced undamped resonant circuit is formed and aligned in the magnetic field such that the auxiliary field generated via the resulting high resonance current reaches a shaded field area and amplifies the field strength available there.

Description

Die Erfindung bezieht sich auf ein System zur drahtlosen Versorgung einer Vielzahl von Sensoren und/oder Aktoren und/oder anderer Elektronik gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to a wireless service system a plurality of sensors and / or actuators and / or other electronics according to the preamble of claim 1.

Aus der DE 199 26 799 A1 sind ein Verfahren respektive eine Anordnung respektive ein System zur drahtlosen Versorgung einer Vielzahl von Näherungssensoren (z. B. an einer Maschine, insbesondere Fertigungsautomat montiert) bekannt,

  • – wobei mindestens eine von einem mittelfrequenten Oszillator gespeiste Primärwicklung vorgesehen ist, welche ein mittelfrequentes Magnetfeld erzeugt, um derart Näherungssensoren drahtlos mit elektrischer Energie zu versorgen (Primärfeld),
  • – wobei jeder Näherungssensor mindestens eine zur Energieaufnahme aus dem mittelfrequenten Magnetfeld geeignete Sekundärwicklung aufweist,
  • – wobei jeder Näherungssensor mit einer Sendeeinrichtung ausgestattet ist, welche interessierende Sensor-Informationen beinhaltende Funksignale an eine zentrale, mit einem Prozessrechner der Maschine verbundene Empfangseinrichtung abgibt.
From the DE 199 26 799 A1 are a method or an arrangement respectively a system for the wireless supply of a plurality of proximity sensors (eg, mounted on a machine, in particular automatic manufacturing machine) known,
  • Wherein at least one primary winding fed by a medium-frequency oscillator is provided, which generates a medium-frequency magnetic field in order to supply such proximity sensors wirelessly with electrical energy (primary field),
  • Each proximity sensor having at least one secondary winding suitable for absorbing energy from the medium-frequency magnetic field,
  • - Wherein each proximity sensor is equipped with a transmitting device which outputs sensor information containing interest radio signals to a central, connected to a process computer of the machine receiving device.

Für die Erzeugung des Magnetfeldes (Primärfeld) dienen zwei oder drei orthogonal zueinander angeordnete Primärwicklungen. Zusätzlich kann zur Realisierung einer „Spot- Wirkung" mindestens eine, mindestens eine Sekundärwicklung eines Näherungssensors lokal beeinflussende Primärwicklung vorgesehen sein.For the generation the magnetic field (primary field) serve two or three orthogonal arranged primary windings. additionally For the realization of a "spot effect", at least one, at least one secondary winding a proximity sensor provided locally influencing primary winding be.

Die Näherungssensoren sind mit zwei oder drei zur Energieaufnahme aus einem mittelfrequenten Magnetfeld geeigneten orthogonalen Sekundärwicklungen versehen, welche mit einem Resonanzkondensator und mit einem AC/DC-Steller beschaltet sind, welcher einen Energiespeicher auflädt.The Proximity sensors are using two or three to absorb energy from a medium frequency Provided magnetic field suitable orthogonal secondary windings, which are connected with a resonance capacitor and with an AC / DC controller, which charges an energy store.

Aus der DE 199 26 562 A1 ist ein dementsprechendes Verfahren respektive eine Anordnung respektive ein System für eine Vielzahl von Aktoren bekannt.From the DE 199 26 562 A1 is a corresponding method or an arrangement or a system for a variety of actuators known.

Aus der DE 100 55 404 A1 ist eine hierzu korrespondierende Anordnung zur Erzeugung elektrischer Energie aus einem Magnetfeld bekannt, mit einer dreidimensionalen Wicklungsanordnung, gebildet aus einem zentralen, kubusförmigen Kern aus einem magnetisch wirksamen Material, auf welchem mindestens drei Wicklungen aufgebracht sind, deren Wicklungsachsen jeweils rechtwinklig zueinander angeordnet sind und sich in einem gemeinsamen Punkt schneiden. Jede der drei Wicklungen ist mit einem Resonanzkondensator zu einem Resonanzkreis verschaltet und mit einem Gleichrichter verbunden, an welchem die verfügbare Ausgangsleistung abgenommen werden kann.From the DE 100 55 404 A1 a corresponding arrangement for generating electrical energy from a magnetic field is known, comprising a three-dimensional winding arrangement formed of a central, cube-shaped core of a magnetically active material on which at least three windings are applied, whose winding axes are arranged at right angles to each other and in to cut a common point. Each of the three windings is connected with a resonant capacitor to a resonant circuit and connected to a rectifier from which the available output power can be taken off.

Im Idealfall wird jeder Sensor respektive jeder Aktor, der sich im Primärfeld respektive Magnetfeld befindet, an seinem Montageort eine ausreichende Feldstärke für die Energieversorgung vorfinden. In der Praxis wird es aber durchaus vorkommen, dass bestimmte Volumenbereiche im Primärfeld ungenügende Feldstärkewerte aufweisen. Beispiele für derart abgeschattete Feldbereiche sind der Fundamentbereich bei einem Industrieroboter oder eine von Metallflächen umgebene Nische. In diesen abgeschatteten Feldbereichen ist die sichere und ausreichende Energieversorgung von dort befindlichen Sensoren respektive Aktoren nicht gewährleistet.in the Ideally, every sensor, or each actuator, which is in the primary field respectively magnetic field, at its installation a sufficient field strength for the Find energy supply. In practice, it is quite Occur that certain volume areas in the primary field insufficient field strength values exhibit. examples for such shaded field areas are the foundation area an industrial robot or a niche surrounded by metal surfaces. In these shaded field areas is the safe and sufficient energy supply from there located sensors respectively actuators not guaranteed.

Der Erfindung liegt die Aufgabe zugrunde, ein System zur drahtlosen Versorgung einer Vielzahl von Sensoren und/oder Aktoren und/oder anderer Elektronik der eingangs genannten Art anzugeben, welches auch in abgeschatteten Feldbereichen angeordnete Sensoren und/oder Aktoren ausreichend mit Energie versorgt.Of the Invention is based on the object, a system for wireless Supplying a variety of sensors and / or actuators and / or specify other electronics of the type mentioned, which also in shaded field areas arranged sensors and / or Actuators are sufficiently supplied with energy.

Diese Aufgabe wird in Verbindung mit den Merkmalen des Oberbegriffes erfindungsgemäß durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale gelöst.These The object is achieved in conjunction with the features of the preamble according to the invention solved specified in the characterizing part of claim 1 features.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass es unter Verwendung der vorgeschlagenen Feldverstärkungs- oder Ablenkungseinheiten in einfacher Art und Weise und dem konkreten und speziellen Anwendungsfall angepasst möglich ist, die magnetische Feldstärke in abgeschatteten Feldbereichen gezielt zu verstärken, indem Feldlinien des Primärfeldes in diese feldstärkeschwachen Bereiche in verstärkter Form eingeleitet oder umgelenkt werden. Die Feldverstärkungs- oder Ablenkungseinheiten sind als fertige Komponenten produzierbar und somit ab Lager sofort verfügbar, so dass ihr Einsatz zur Feldverstärkung im Bedarfsfall preiswert und komplikationslos erfolgen kann.The particular advantages of the invention are that, using the proposed field enhancement or deflection units in a simple manner and the concrete and special application is possible, the magnetic field strength selectively strengthen in shaded field areas by field lines of the primary field in this field strength weak Areas in reinforced Form initiated or diverted. The field enhancement or deflection units can be produced as finished components and thus immediately available from stock, so that their use for field amplification in case of need cheap and can be done without complications.

Weitere Vorteile sind aus der nachstehenden Beschreibung ersichtlich.Further Advantages will be apparent from the following description.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.advantageous Embodiments of the invention are characterized in the subclaims.

Die Erfindung wird nachstehend anhand der in der Zeichnung dargestellten Ausführungsbeispiele erläutert. Es zeigen:The Invention will be described below with reference to the drawing Embodiments explained. It demonstrate:

1, 2 zwei unterschiedliche Ausführungsformen einer Feldverstärkungs- oder Ablenkungseinheit, 1 . 2 two different embodiments of a field enhancement or deflection unit,

3, 4, 5, 6 vier Ausführungsbeispiele für den Einsatz einer Feldverstärkungs- oder Ablenkungseinheit oder mehrerer Feldverstärkungs- oder Ablenkungseinheiten. 3 . 4 . 5 . 6 four embodiments for the use of a Feldverstärkungs- or deflection unit or more Feldverstärkungs- or deflection units.

Wie eingangs bereits erwähnt, wird von einem System zur drahtlosen Versorgung einer Vielzahl von Sensoren und/oder Aktoren und/oder anderer Elektronik ausgegangen, wobei mindestens eine von einem mittelfrequenten Oszillator gespeiste Primärwicklung ein Magnetfeld zur drahtlosen Versorgung der Sensoren und/oder Aktoren und/oder anderer Elektronik mit elektrischer Energie erzeugt und wobei jeder Sensor und/oder Aktor und/oder andere Elektronik mindestens eine zur Energieaufnahme aus dem mittelfrequenten Magnetfeld geeignete Sekundärwicklung aufweist. Es wird hierzu auf die Ausführungen der eingangs erwähnten DE 199 26 799 A1 und DE 199 26 562 A1 hingewiesen.As already mentioned, it is assumed that a system for the wireless supply of a plurality of sensors and / or actuators and / or other electronics, wherein at least one of a medium-frequency oscillator fed primary winding, a magnetic field for wireless supply of sensors and / or actuators and / or generated by other electronics with electrical energy and wherein each sensor and / or actuator and / or other electronics has at least one suitable for absorbing energy from the medium-frequency magnetic field secondary winding. It is on the comments of the above-mentioned DE 199 26 799 A1 and DE 199 26 562 A1 pointed.

In feldschwachen, insbesondere abgeschatteten Bereichen wird der Einsatz mindestens einer Feldverstärkungs- oder Ablenkungseinheit vorgeschlagen, welche am gewünschten Ort in das durch die Primärwicklung erzeugte Magnetfeld mit einem gewünschten Neigungswinkel eingebracht (montiert) wird, wobei die Feldverstärkungs- oder Ablenkungseinheit aus einem auf Resonanz mit dem Magnetfeld abgeglichenen ungedämpften Schwingkreis gebildet und derart im Magnetfeld ausgerichtet ist, dass das über den resultierenden hohen Resonanzstrom in der Feldverstärkungs- oder Ablenkungseinheit erzeugte Hilfsfeld einen abgeschatteten Feldbereich erreicht und derart die dort verfügbare Feldstärke verstärkt. Dabei können zwei unterschiedlichen Ausführungsformen einer Feldverstärkungs- oder Ablenkungseinheit eingesetzt werden:In Field-weak, especially shaded areas will be the use at least one field enhancement or deflection unit proposed, which at the desired Place in that by the primary winding generated magnetic field with a desired angle of inclination introduced (mounted), wherein the field enhancement or deflection unit from a balanced to resonance with the magnetic field undamped resonant circuit is formed and aligned in the magnetic field that over the resulting high resonance current in the field amplification or deflection unit generated auxiliary field reaches a shaded field area and so available there Field strength intensified. there can two different embodiments a field enhancement or deflection unit are used:

In 1 ist eine erste Ausführungsform einer Feldverstärkungs- oder Ablenkungseinheit dargestellt. Die Feldverstärkungs- oder Ablenkungseinheit 4 besteht aus einem von einer Wicklung 2 umschlossenen Ferritstab 1, wobei an die Enden der Wicklung 3 ein Resonanzkondensator 3 angeschlossen ist.In 1 a first embodiment of a Feldverstärkungs- or deflection unit is shown. The field enhancement or deflection unit 4 consists of one of a winding 2 enclosed ferrite bar 1 , being attached to the ends of the winding 3 a resonance capacitor 3 connected.

In 2 ist eine zweite Ausführungsform einer Feldverstärkungs- oder Ablenkungseinheit dargestellt. Die Feldverstärkungs- oder Ablenkungseinheit 6 besteht aus einer Luftspule 5, an deren Enden ein Resonanzkondensator 3 angeschlossen ist. Die Luftspule 5 kann mehrere Windungen aufweisen (vorzugsweise im Bereich 1...10 Windungen) und hat einen auf die gegebene Feldverstärkungsaufgabe angepassten Durchmesser, welcher vorzugsweise im Bereich 20...100 cm liegt.In 2 a second embodiment of a field enhancement or deflection unit is shown. The field enhancement or deflection unit 6 consists of an air coil 5 , at the ends of a resonant capacitor 3 connected. The air coil 5 may have several turns (preferably in the range 1 ... 10 turns) and has a diameter adapted to the given field enhancement task, which is preferably in the range 20 ... 100 cm.

Selbstverständlich weisen beide Ausführungsformen der Feldverstärkungs- oder Ablenkungseinheiten vorzugsweise einstellbare bzw. verstellbare Montagemittel auf, welche eine einfache Befestigung am gewünschten Ort und in gewünschter Ausrichtung im Magnetfeld ermöglichen.Of course, wise both embodiments the field enhancement or deflection units preferably adjustable or adjustable Mounting means on which a simple attachment to the desired Place and in desired Allow alignment in the magnetic field.

Für beide Ausführungsformen gemäß 1 und 2 gilt für den erforderlichen Resonanzabgleich mit dem eingangs erwähnten Primärfeld (Magnetfeld) die allgemein bekannte Schwingkreis-Beziehung

Figure 00050001
mit

L
= Induktivität des Schwingkreises der Feldverstärkungs- oder Ablenkungseinheit
C
= Kapazität des Schwingkreises der Feldverstärkungs- oder Ablenkungseinheit
T
= Periodendauer des Schwingkreises der Feldverstärkungs- oder Ablenkungseinheit
f
= Frequenz des Schwingkreises der Feldverstärkungs- oder Ablenkungseinheit
For both embodiments according to 1 and 2 applies to the required resonance balance with the above-mentioned primary field (magnetic field), the well-known resonant circuit relationship
Figure 00050001
With
L
= Inductance of the resonant circuit of the field amplification or deflection unit
C
= Capacitance of the resonant circuit of the field amplification or deflection unit
T
= Period of the resonant circuit of Feldverstärkungs- or deflection unit
f
= Frequency of the resonant circuit of the field amplification or deflection unit

In 3 ist ein erstes Ausführungsbeispiel für den konkreten Einsatz einer Feldverstärkungs- oder Ablenkungseinheit dargestellt. Es ist zu erkennen, dass die Feldverstärkungs- oder Ablenkungseinheit 4 in ein Magnetfeld mit Feldlinien 7 eingebracht ist, wobei der Neigungswinkel der Feldverstärkungs- oder Ablenkungseinheit 4 bezüglich der Richtung der Feldlinien α1 beträgt. Die Feldverstärkungs- oder Ablenkungseinheit 4 bewirkt eine partielle Ablenkung eines Teils der Feldlinien 7 – siehe abgelenkte Feldlinien 8.In 3 is a first embodiment of the concrete use of a Feldverstärkungs- or deflection unit shown. It can be seen that the field enhancement or deflection unit 4 in a magnetic field with field lines 7 is introduced, wherein the inclination angle of the Feldverstärkungs- or deflection unit 4 with respect to the direction of the field lines α1. The field enhancement or deflection unit 4 causes a partial deflection of part of the field lines 7 - see deflected field lines 8th ,

In 4 ist ein zweites Ausführungsbeispiel für den konkreten Einsatz einer Feldverstärkungs- oder Ablenkungseinheit dargestellt. Es ist zu erkennen, dass die Feldverstärkungs- oder Ablenkungseinheit 6 in ein Magnetfeld mit Feldlinien 7 eingebracht ist, wobei der Neigungswinkel der Feldverstärkungs- oder Ablenkungseinheit 6 bezüglich der Richtung der Feldlinien α2 beträgt. Die Feldverstärkungs- oder Ablenkungseinheit 6 bewirkt wiederum eine partielle Ablenkung der Feldlinien 7 – siehe abgelenkte Feldlinien 8.In 4 a second embodiment for the specific use of a Feldverstärkungs- or deflection unit is shown. It can be seen that the field enhancement or deflection unit 6 in a magnetic field with field lines 7 is introduced, wherein the inclination angle of the Feldverstärkungs- or deflection unit 6 with respect to the direction of the field lines α2. The field enhancement or deflection unit 6 in turn causes a partial deflection of the field lines 7 - see deflected field lines 8th ,

In 5 ist ein drittes Ausführungsbeispiel dargestellt, welches einen speziellen Einsatz mehrerer „nacheinander geschalteter" Feldverstärkungs- oder Ablenkungseinheiten zeigt. Es ist zu erkennen, dass drei Feldverstärkungs- oder Ablenkungseinheiten 4.1, 6 und 4.2 in ein Magnetfeld mit Feldlinien 7 eingebracht sind,

  • • wobei der Neigungswinkel der Feldverstärkungs- oder Ablenkungseinheit 4.1 bezüglich der Richtung der Feldlinien α3 beträgt,
  • • wobei der Neigungswinkel der Feldverstärkungs- oder Ablenkungseinheit 6 bezüglich der Richtung der Feldlinien α4 > α3 beträgt,
  • • wobei der Neigungswinkel der Feldverstärkungs- oder Ablenkungseinheit 4.2 bezüglich der Richtung der Feldlinien α5 > α4 beträgt.
In 5 A third embodiment is shown which shows a specific use of several "sequentially switched" field enhancement or deflection units 4.1 . 6 and 4.2 in a magnetic field with field lines 7 are introduced,
  • • where the inclination angle of the field enhancement or deflection unit 4.1 with respect to the direction of the field lines α3,
  • • where the inclination angle of the field enhancement or deflection unit 6 with respect to the direction of the field lines α4> α3,
  • • where the angle of inclination of the field amplifier kung or deflection unit 4.2 with respect to the direction of the field lines α5> α4.

Die drei Feldverstärkungs- oder Ablenkungseinheit 4.1, 6 und 4.2 sind derart „nacheinander" im Magnetfeld angeordnet, dass die abgelenkten Feldlinien 8.1 der Feldverstärkungs- oder Ablenkungseinheit 4.1 in die Feldverstärkungs- oder Ablenkungseinheit 6 eintreten und dass nachfolgend die abgelenkten Feldlinien 8.2 der Feldverstärkungs- oder Ablenkungseinheit 6 in die Feldverstärkungs- oder Ablenkungseinheit 4.2 eintreten. Im Ergebnis zeigen die abgelenkten und aus der Feldverstärkungs- oder Ablenkungseinheit 4.2 austretenden Feldlinien 8.3 in Richtung des abgeschatteten Feldbereiches, welcher verstärkt werden soll. Im Ausführungsbeispiel gemäß 5 werden die Feldlinien 8.3 quasi rechtwinklig gegenüber den Feldlinien 7 abgelenkt. Auf diese Weise kann ein durch eine Metallabschirmung 10 vom Magnetfeld abgeschirmter und in einer unzugänglichen Nische befindlicher Sensor oder Aktor (oder andere beliebige Elektronik) 9 drahtlos aus dem Magnetfeld gespeist werden.The three field enhancement or deflection unit 4.1 . 6 and 4.2 are arranged so "successively" in the magnetic field that the deflected field lines 8.1 the field enhancement or deflection unit 4.1 into the field enhancement or deflection unit 6 enter and that subsequently the deflected field lines 8.2 the field enhancement or deflection unit 6 into the field enhancement or deflection unit 4.2 enter. As a result, the deflected and out of the field enhancement or deflection unit 4.2 exiting field lines 8.3 in the direction of the shaded field area, which is to be strengthened. In the embodiment according to 5 become the field lines 8.3 almost perpendicular to the field lines 7 distracted. In this way, a through a metal shield 10 sensor or actuator (or any other electronics) shielded from the magnetic field and located in an inaccessible niche 9 be fed wirelessly from the magnetic field.

In 6 ist ein viertes Ausführungsbeispiel dargestellt, welches einen durch eine Metallabschirmung 10 vom Magnetfeld abgeschirmten und in einer unzugänglichen Nische befindlichen Sensor oder Aktor 9 (oder andere Elektronik) zeigt. Durch die Feldverstärkungs- oder Ablenkungseinheit 6 erfolgt eine Verstärkung (Konzentration) der Feldlinien 7 des Magnetfeldes, welche als verstärkte Feldlinien 8.4 gezielt zum Sensor/Aktor (bzw. zur beliebigen Elektronik) 9 gerichtet sind und derart dessen ausreichende Energieversorgung sicherstellen.In 6 a fourth embodiment is shown, which by a metal shield 10 shielded by the magnetic field and located in an inaccessible niche sensor or actuator 9 (or other electronics) shows. Through the field enhancement or deflection unit 6 there is an amplification (concentration) of the field lines 7 of the magnetic field, which as reinforced field lines 8.4 targeted to the sensor / actuator (or any electronics) 9 are directed and thus ensure its adequate energy supply.

11
Ferritstabferrite
22
Wicklungwinding
33
Resonanzkondensatorresonant capacitor
44
4.1, 4.2 Feldverstärkungs- oder Ablenkungseinheit 4.1 . 4.2 Field enhancement or deflection unit
55
Luftspuleair coil
66
Feldverstärkungs- oder AblenkungseinheitFeldverstärkungs- or deflection unit
77
Feldlinien des Magnetfeldesfield lines of the magnetic field
88th
8.1, 8.2, 8.3 abgelenkte Feldlinien, 8.4 verstärkte Feldlinien 8.1 . 8.2 . 8.3 deflected field lines, 8.4 reinforced field lines
99
Sensor oder Aktor oder andere beliebige Elektroniksensor or actuator or any other electronics
1010
Metallabschirmungmetal shield
α1, α2, α3, α4, α5α1, α2, α3, α4, α5
Neigungswinkel der Feldverstärkungs- oder Ablenkungseinheit bezüglich der Richtung der Feldlinien des Primärfeldestilt angle the field enhancement or deflection unit with respect to the direction of the field lines of the primary field

Claims (4)

System zur drahtlosen Versorgung einer Vielzahl von Geräten wie Sensoren und/oder Aktoren und/oder anderer Elektronik, wobei mindestens eine von einem mittelfrequenten Oszillator gespeiste Primärwicklung ein Magnetfeld zur drahtlosen Versorgung dieser Geräte mit elektrischer Energie erzeugt und wobei jedes dieser Geräte mindestens eine zur Energieaufnahme aus dem mittelfrequenten Magnetfeld geeignete Sekundärwicklung aufweist, dadurch gekennzeichnet, dass mindestens eine Feldverstärkungs- oder Ablenkungseinheit (4, 4.1, 4.2, 6) in das durch die Primärwicklung erzeugte Magnetfeld mit einem gewünschten Neigungswinkel (α1...α5) eingebracht wird, wobei die Feldverstärkungs- oder Ablenkungseinheit (4, 4.1, 4.2, 6) aus einem auf Resonanz mit dem Magnetfeld abgeglichenen ungedämpften Schwingkreis gebildet und derart im Magnetfeld ausgerichtet ist, dass das über den resultierenden hohen Resonanzstrom erzeugte Hilfsfeld einen abgeschatteten Feldbereich erreicht und die dort verfügbare Feldstärke verstärkt.System for wireless supply of a variety of devices such as sensors and / or actuators and / or other electronics, wherein at least one fed by a medium frequency oscillator primary coil generates a magnetic field for wireless supply of electrical energy to these devices and each of these devices at least one for energy absorption having the medium-frequency magnetic field suitable secondary winding, characterized in that at least one Feldverstärkungs- or deflection unit ( 4 . 4.1 . 4.2 . 6 ) is introduced into the magnetic field generated by the primary winding with a desired inclination angle (α1 ... α5), wherein the field amplification or deflection unit ( 4 . 4.1 . 4.2 . 6 ) is formed from a balanced to resonance with the magnetic field undamped resonant circuit and is aligned in the magnetic field such that the auxiliary field generated via the resulting high resonance current reaches a shaded field area and amplifies the field strength available there. System nach Anspruch 1, gekennzeichnet durch eine Hintereinanderschaltung von mindestens zwei Feldverstärkungs- oder Ablenkungseinheiten (4, 4.1, 4.2, 6).System according to claim 1, characterized by a series connection of at least two Feldverstärkungs- or deflection units ( 4 . 4.1 . 4.2 . 6 ). System nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Feldverstärkungs- oder Ablenkungseinheit (4, 4.1, 4.2) aus einer einen Ferritstab (1) umschließenden Wicklung (2) besteht, an welche ein Resonanzkondensator (3) angeschlossen ist.System according to claim 1 or 2, characterized in that the field intensifying or deflecting unit ( 4 . 4.1 . 4.2 ) from a ferrite rod ( 1 ) enclosing winding ( 2 ) to which a resonance capacitor ( 3 ) connected. System nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Feldverstärkungs- oder Ablenkungseinheit (6) aus einer Luftspule (5) besteht, an welche ein Resonanzkondensator (3) angeschlossen ist.System according to claim 1 or 2, characterized in that the field intensifying or deflecting unit ( 6 ) from an air-core coil ( 5 ) to which a resonance capacitor ( 3 ) connected.
DE102006044057A 2006-09-20 2006-09-20 Wireless power supply system for multiple electronic devices e.g. sensors, actuators has at least one field reinforcement or deflection unit that is brought into magnetic field such that resonance is adjusted Withdrawn DE102006044057A1 (en)

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