EP1323147B1 - Inductive transformer - Google Patents
Inductive transformer Download PDFInfo
- Publication number
- EP1323147B1 EP1323147B1 EP01967034A EP01967034A EP1323147B1 EP 1323147 B1 EP1323147 B1 EP 1323147B1 EP 01967034 A EP01967034 A EP 01967034A EP 01967034 A EP01967034 A EP 01967034A EP 1323147 B1 EP1323147 B1 EP 1323147B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transmission
- another
- transmitter
- components
- chambers
- 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.)
- Expired - Lifetime
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
- H01F38/18—Rotary transformers
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
-
- 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
Definitions
- the invention relates to an inductive transformer, in particular a rotary transformer, for signal and energy transmission between moving components according to the preamble of the main claim.
- bidirectional data transmission between the steering column and the steering wheel should be possible with simultaneous energy transmission from the steering column to the steering wheel.
- the energy transfer can be approx. 1 W if only the steering wheel electronics need to be supplied, and an additional 120 W if a steering wheel heater is to be supplied.
- information regarding the actuation of the horn, the control buttons for driving comfort, a telephone call button, speed control (cruise control), certain radio functions or airbag monitoring and ignition can be replaced.
- a winding spring for data transmission and / or a slip ring for energy transmission is conventionally provided.
- an inductive transmitter for transmitting measurement data and electrical energy between two mutually movable components with a primary and a secondary transmitter part is advantageously further developed with the means specified in claim 1.
- a transmitter for the transmission of measurement data and a transmitter for the transmission of electrical energy.
- the primary and the secondary transmitter parts of each transmitter are housed in separate, magnetically largely shielded chambers, which are formed by concentric and radial metal walls on the movable components, with the concentric walls each other grip that they form the radially successive chambers.
- a metallic chamber element can be arranged on each of the mutually movable components, each of which has a double U-shape in radial section and whose concentric walls are arranged in such a way that they interlock without interfering with the rotary movement.
- This is preferably applied in such a way that the one transmitter parts and chamber elements are attached to the steering spindle of a vehicle and the other transmitter parts and chamber elements are attached to the steering column of a vehicle.
- the middle separator of the two chamber elements serves as a magnetic part for both parts of the transmission, but has no significant crosstalk, since in most applications, e.g. in the motor vehicle, frequencies of 50 kHz or several megahertz only a magnetic skin effect occurs and the magnetic interactions do not have a disruptive effect.
- 1 and 2 each show a view of a rotary transmitter between a steering spindle and a steering column of a motor vehicle with separate transmitter parts for a signal and an energy transmission in separate chambers.
- FIG. 1 shows an inductive transformer which has chamber elements 1 and 2 which intermesh like a comb and are part of a steering device for a motor vehicle, which is not shown here and is not explained in detail.
- the chamber element 1 is attached to a steering column, for example, and the chamber element 2 is then attached to a steering spindle.
- the end of the steering spindle can be rotated by means of a steering wheel, the steering spindle being rotatably held on the steering column, which is firmly connected to the chassis of the vehicle.
- a primary transmitter part 3 is arranged on element 1 and a secondary transmitter part 4 on element 2 for signal transmission and a primary transmitter part 5 on element 1 and a secondary transmitter part 6 on element 2 for energy transmission. This can then be used to transmit measurement data and electrical energy between sensors arranged, for example, on the steering spindle and a central evaluation unit in the vehicle.
- a chamber 7 for signal transmission By forming the comb-like concentric and radial walls of the chamber elements 1 and 2 here is a chamber 7 for signal transmission and a chamber 8 for energy transmission. Mixing signal and energy transmission can thus be avoided in a simple manner by the thus achieved formation of two transmitters separated by chamber walls.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Steering Controls (AREA)
- Air Bags (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Description
Die Erfindung betrifft einen induktiven Übertrager, insbesondere einen Drehübertrager, zur Signal- und Energieübertragung zwischen beweglichen Bauteilen nach dem Oberbegriff des Hauptanspruchs.The invention relates to an inductive transformer, in particular a rotary transformer, for signal and energy transmission between moving components according to the preamble of the main claim.
Insbesondere bei einer Anwendung eines solchen Übertragers in einem Kraftfahrzeug soll z.B. eine bidirektionale Datenübertragung zwischen Lenksäule und Lenkrad bei gleichzeitiger Energieübertragung von der Lenksäule zum Lenkrad möglich sein. Die Energieübertragung kann bei ca. 1 W liegen, wenn nur die Lenkradelektronik versorgt werden muss, und bei zusätzlichen 120 W, wenn eine Lenkradheizung versorgt werden soll. Weiterhin könnten auch Informationen betreffend die Betätigung der Hupe, der Bedientasten für den Fahrkomfort, einer Telefonruftaste, einer Geschwindigkeitsregelung (Tempomat), bestimmter Radiofunktionen oder auch einer Airbagüberwachung und -zündung ausgetauscht werden.In particular when using such a transmitter in a motor vehicle, for example, bidirectional data transmission between the steering column and the steering wheel should be possible with simultaneous energy transmission from the steering column to the steering wheel. The energy transfer can be approx. 1 W if only the steering wheel electronics need to be supplied, and an additional 120 W if a steering wheel heater is to be supplied. Furthermore, information regarding the actuation of the horn, the control buttons for driving comfort, a telephone call button, speed control (cruise control), certain radio functions or airbag monitoring and ignition can be replaced.
In herkömmlicher Weise wird in solchen Fällen eine Wickelfeder zur Datenübertragung und/oder ein Schleifring zur Energieübertragung vorgesehen. Die Wickelfeder und der Schleifring haben jedoch prinzipiell einen relativ hohen Geräuschpegel und verursachen gleichzeitig eine Vielzahl von Problemen, wie sog. EMV-Probleme (EMV = Elektro-Magnetische-Verträglichkeit), Montage- und Reparaturprobleme sowie eine nicht zu vernachlässigende Reibung und eine schwierige Kontaktierung. Wenn bei der induktiven Übertragung von elektrischer Energie dies gleichzeitig mit der Datenübertragung realisiert wird, kann es ferner zu einem Übersprechen kommen, insbesondere weil der Übertrager einen Wirkungsgrad von <0,6 aufweist und der Innenwiderstand der Sekundärseite >15 Ohm beträgt.In such cases, a winding spring for data transmission and / or a slip ring for energy transmission is conventionally provided. In principle, however, the clock spring and the slip ring have a relatively high noise level and at the same time cause a multitude of problems, such as so-called EMC problems (EMC = electro-magnetic compatibility), assembly and repair problems, as well as not negligible friction and difficult contacting , If this is realized at the same time as the data transmission in the inductive transmission of electrical energy, crosstalk can also occur, in particular because the transformer has an efficiency of <0.6 and the internal resistance of the secondary side is> 15 ohms.
Aus dem Dokument DE-A-195 38528 sind Vorrichtungen zum induktiven Übertragen von elektrischer Energie und Daten bekannt.From document DE-A-195 38528 devices for the inductive transmission of electrical energy and data are known.
Gemäß der Erfindung wird ein induktiver Übertrager zur Übertragung von Messdaten und elektrischer Energie zwischen zwei gegeneinander beweglichen Bauteilen mit einem primären und einem sekundären Übertragerteil mit den im Anspruchs 1 angegebenen Mitteln in vorteilhafter Weise weitergebildet. Es ist erfindungsgemäß jeweils ein Übertrager für die Übertagung von Messdaten und ein Übertrager für die Übertragung von elektrischer Energie vorhanden. Die primären und die sekundären Übertragerteile jeweils eines Übertragers sind in separaten, magnetisch weitgehend voneinander abgeschirmten Kammern untergebracht, die durch konzentrische und radiale Metallwände an den beweglichen Bauteilen gebildet werden, wobei die konzentrischen Wände jeweils so ineinander greifen, dass sie die radial hintereinander liegende Kammern bilden.According to the invention, an inductive transmitter for transmitting measurement data and electrical energy between two mutually movable components with a primary and a secondary transmitter part is advantageously further developed with the means specified in claim 1. According to the invention, there is a transmitter for the transmission of measurement data and a transmitter for the transmission of electrical energy. The primary and the secondary transmitter parts of each transmitter are housed in separate, magnetically largely shielded chambers, which are formed by concentric and radial metal walls on the movable components, with the concentric walls each other grip that they form the radially successive chambers.
Auf einfache Weise kann dabei an jedem der gegeneinander beweglichen Bauteile ein metallisches Kammerelement angeordnet werden, das jeweils im radialen Schnitt eine doppelte U-Form aufweist und deren konzentrische Wände so angeordnet sind, dass sie ohne Behinderung der Drehbewegung ineinander greifen. Bevorzugt wird dies so angewendet, dass die jeweils einen Übertragerteile und Kammerelemente an der Lenkspindel eines Fahrzeuges und das die jeweils anderen Übertragerteile und Kammerelemente an der Lenksäule eines Fahrzeuges angebracht sind.In a simple manner, a metallic chamber element can be arranged on each of the mutually movable components, each of which has a double U-shape in radial section and whose concentric walls are arranged in such a way that they interlock without interfering with the rotary movement. This is preferably applied in such a way that the one transmitter parts and chamber elements are attached to the steering spindle of a vehicle and the other transmitter parts and chamber elements are attached to the steering column of a vehicle.
Durch die vorgeschlagene Anbringung von zwei durch Kammerwände getrennten Übertragern kann somit auf einfache Weise eine Vermischung von Signal- und Energieübertragung vermieden werden. Der mittlere Trennsteg der beiden Kammerelemente dient zwar als magnetischer Teil für beide Teile der Übertragung, hat aber kein bedeutendes Übersprechen, da bei den in den meisten Anwendungsfällen, z.B. im Kraftfahrzeug, verwendeten Frequenzen von 50 kHz bzw. mehreren Megaherz nur ein magnetischer Skineffekt auftritt und sich die magnetischen Wechselwirkungen nicht störend auswirken.Mixing of signal and energy transmission can thus be avoided in a simple manner by the proposed attachment of two transmitters separated by chamber walls. The middle separator of the two chamber elements serves as a magnetic part for both parts of the transmission, but has no significant crosstalk, since in most applications, e.g. in the motor vehicle, frequencies of 50 kHz or several megahertz only a magnetic skin effect occurs and the magnetic interactions do not have a disruptive effect.
Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und der Zeichnung hervor.These and other features of preferred developments of the invention are evident not only from the claims but also from the description and the drawing.
Ein Ausführungsbeispiel eines erfindungsgemäßen induktiven Übertragers zur Signal- und Energieübertragung zwischen Bauteilen eines Drehübertragers wird anhand der Zeichnung erläutert. Es zeigen:An embodiment of an inductive transmitter according to the invention for signal and energy transmission between components of a rotary transformer is explained with reference to the drawing. Show it:
Figur 1 und 2 jeweils eine Ansicht eines Drehübertragers zwischen einer Lenkspindel und einer Lenksäule eines Kraftfahrzeuges mit separaten Übertragerteilen für eine Signalund eine Energieübertragung in jeweils getrennten Kammern.1 and 2 each show a view of a rotary transmitter between a steering spindle and a steering column of a motor vehicle with separate transmitter parts for a signal and an energy transmission in separate chambers.
In Figur 1 ist ein induktiver Übertrager gezeigt, der Kammerelemente 1 und 2 aufweist, die kammartig ineinander greifen und Bestandteil einer hier nicht dargestellten und nicht näher erläuterten Lenkvorrichtung für ein Kraftfahrzeug sind. Das Kammerelement 1 ist beispielsweise an einer Lenksäule angebracht und das Kammerelement 2 ist dann an einer Lenkspindel befestigt. Das Ende der Lenkspindel ist dabei mittels eines Lenkrades drehbar, wobei die Lenkspindel an der Lenksäule, die fest mit dem Chassis des Fahrzeugs verbunden ist, drehbar gehalten ist.FIG. 1 shows an inductive transformer which has chamber elements 1 and 2 which intermesh like a comb and are part of a steering device for a motor vehicle, which is not shown here and is not explained in detail. The chamber element 1 is attached to a steering column, for example, and the chamber element 2 is then attached to a steering spindle. The end of the steering spindle can be rotated by means of a steering wheel, the steering spindle being rotatably held on the steering column, which is firmly connected to the chassis of the vehicle.
Zwischen der Lenkspindel und der Lenksäule ist ein induktiver Drehübertrager vorhanden. Es ist jeweils ein primäres Übertragerteil 3 am Element 1 und ein sekundäres Übertragerteil 4 am Element 2 für eine Signalübertragung und jeweils ein primäres Übertragerteil 5 am Element 1 und ein sekundäres Übertragerteil 6 am Element 2 für eine Energieübertragung angeordnet. Hiermit können dann Messdaten und elektrische Energie zwischen beispielsweise auf der Lenkspindel angeordneten Sensoren und einer zentralen Auswerteeinheit im Fahrzeug übertragen werden.There is an inductive rotary transformer between the steering spindle and the steering column. A primary transmitter part 3 is arranged on element 1 and a secondary transmitter part 4 on element 2 for signal transmission and a primary transmitter part 5 on element 1 and a secondary transmitter part 6 on element 2 for energy transmission. This can then be used to transmit measurement data and electrical energy between sensors arranged, for example, on the steering spindle and a central evaluation unit in the vehicle.
Durch die Ausbildung der kammartig ineinander greifenden konzentrischen und radialen Wände der Kammerelemente 1 und 2 ist hier eine Kammer 7 für eine Signalübertragung und eine Kammer 8 für die Energieübertragung geschaffen. Durch die somit ereichte Ausbildung von zwei durch Kammerwände getrennte Übertrager kann somit auf einfache Weise eine Vermischung von Signal- und Energieübertragung vermieden werden.By forming the comb-like concentric and radial walls of the chamber elements 1 and 2 here is a chamber 7 for signal transmission and a chamber 8 for energy transmission. Mixing signal and energy transmission can thus be avoided in a simple manner by the thus achieved formation of two transmitters separated by chamber walls.
Claims (2)
- Inductive transmission system for transmission of measurement data and electrical power between two components (1, 2) which can move with respect to one another, with one transmitter in each case being provided for transmission of measurement data and one transmitter being provided for transmission of electrical power, with the transmitters having at least one primary transmission part (3, 4) and at least one secondary transmission part (5, 6), characterized in that the components (1, 2) which can move with respect to one another engage in one another like a comb, such that separate chambers are produced (7, 8) which are largely magnetically screened from one another, in that the chambers (7, 8) are formed by concentric and radial metal walls on components (1, 2), with the concentric walls in each case engaging in one another such that they form the chambers (7, 8) which are located radially one behind the other, in that the respective chamber elements of the components (1, 2) are designed such that they have a double U-shape in a radial cross section and their concentric walls are arranged such that they engage in one another without impeding the rotary movement.
- Inductive transmission system according to Claim 1, characterized in that one component (2) is fitted to the steering spindle of a vehicle, and the other component (1) is fitted to the steering column of the vehicle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10046659A DE10046659A1 (en) | 2000-09-20 | 2000-09-20 | Inductive transformer |
| DE10046659 | 2000-09-20 | ||
| PCT/DE2001/003269 WO2002025616A1 (en) | 2000-09-20 | 2001-08-28 | Inductive transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1323147A1 EP1323147A1 (en) | 2003-07-02 |
| EP1323147B1 true EP1323147B1 (en) | 2004-04-28 |
Family
ID=7657006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01967034A Expired - Lifetime EP1323147B1 (en) | 2000-09-20 | 2001-08-28 | Inductive transformer |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7053791B2 (en) |
| EP (1) | EP1323147B1 (en) |
| JP (1) | JP5253700B2 (en) |
| DE (2) | DE10046659A1 (en) |
| WO (1) | WO2002025616A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10343147A1 (en) * | 2003-09-18 | 2005-05-04 | Daimler Chrysler Ag | Wireless transmission of electric signal e.g. for steering wheel of vehicle, has micro controller and transmitter attached to steering wheel and fixed receiver in other part of vehicle |
| US7405540B2 (en) * | 2003-10-20 | 2008-07-29 | Teleflex Megatech, Inc. | Secondary power supply system and method of activating subsystems from a vehicle steering wheel |
| US7525449B1 (en) | 2003-10-20 | 2009-04-28 | Teleflex Megatech, Inc. | Status light for switch on boat steering wheel |
| DE10351117B3 (en) * | 2003-11-03 | 2005-02-17 | Abb Research Ltd. | Rotary transformer e.g. for inductive energy transmission or signal transmission, has primary and secondary windings each divided into winding sections which are interleaved |
| JP3915806B2 (en) * | 2003-11-11 | 2007-05-16 | セイコーエプソン株式会社 | Electro-optical device and electronic apparatus |
| US7672759B1 (en) * | 2004-02-24 | 2010-03-02 | Teleflex Megatech, Inc. | Communication with a steering wheel switch |
| US7135981B1 (en) | 2004-10-12 | 2006-11-14 | Teleflex Megatech Inc. | Fuel level variation detector for marine vehicle |
| DE102005011197B4 (en) * | 2005-03-09 | 2013-03-07 | Komet Group Gmbh | Rotary transmission and thus equipped machine frame |
| DE102010056511A1 (en) * | 2010-12-31 | 2012-07-05 | Endress + Hauser Gmbh + Co. Kg | Electromechanical level gauge |
| EP2688078A1 (en) * | 2012-07-17 | 2014-01-22 | Stichting Nationaal Lucht- en Ruimtevaart Laboratorium | Contactless power and data transfer |
| EP2913637B1 (en) * | 2014-02-27 | 2016-04-27 | LTN Servotechnik GmbH | Resolver |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59155713A (en) * | 1983-02-24 | 1984-09-04 | Kenichi Taoka | Leveling rod with illuminator |
| GB2173351B (en) * | 1986-02-03 | 1988-06-22 | Porsche Ag | A ferromagnetic multiple shell core |
| JPS63184185A (en) * | 1987-01-26 | 1988-07-29 | Tokyo Keiki Co Ltd | Magnetic inductive coupling device |
| JP2921861B2 (en) * | 1989-07-05 | 1999-07-19 | 旭光学工業株式会社 | Auto focus camera |
| JP3024784B2 (en) * | 1990-09-26 | 2000-03-21 | 株式会社ブリヂストン | Tire internal monitoring device |
| EP0680060A1 (en) * | 1994-04-26 | 1995-11-02 | Eaton Corporation | Rotary transformer |
| DE19538528C2 (en) * | 1995-10-06 | 1998-07-23 | Petri Ag | Device for the inductive transmission of electrical energy and data |
| DE29607713U1 (en) * | 1996-04-17 | 1996-07-25 | Petri Ag, 63743 Aschaffenburg | Device for the inductive transmission of electrical energy and signals in motor vehicles |
| JPH11354348A (en) * | 1998-06-04 | 1999-12-24 | Furukawa Electric Co Ltd:The | Isolation transformer |
| JPH11354350A (en) * | 1998-06-10 | 1999-12-24 | Furukawa Electric Co Ltd:The | Module assembly provided with isolation transformer |
| JP3717324B2 (en) * | 1999-01-25 | 2005-11-16 | 古河電気工業株式会社 | Separation transformer |
| JP3745920B2 (en) * | 1999-05-28 | 2006-02-15 | 古河電気工業株式会社 | Separate transformer |
| DE10046658A1 (en) * | 2000-09-20 | 2002-04-04 | Bosch Gmbh Robert | Inductive transformer and a method for its production |
-
2000
- 2000-09-20 DE DE10046659A patent/DE10046659A1/en not_active Ceased
-
2001
- 2001-08-28 WO PCT/DE2001/003269 patent/WO2002025616A1/en active IP Right Grant
- 2001-08-28 JP JP2002529739A patent/JP5253700B2/en not_active Expired - Lifetime
- 2001-08-28 DE DE50102163T patent/DE50102163D1/en not_active Expired - Lifetime
- 2001-08-28 EP EP01967034A patent/EP1323147B1/en not_active Expired - Lifetime
- 2001-08-28 US US10/380,594 patent/US7053791B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1323147A1 (en) | 2003-07-02 |
| JP2004510325A (en) | 2004-04-02 |
| DE50102163D1 (en) | 2004-06-03 |
| US7053791B2 (en) | 2006-05-30 |
| WO2002025616A1 (en) | 2002-03-28 |
| US20030179105A1 (en) | 2003-09-25 |
| JP5253700B2 (en) | 2013-07-31 |
| DE10046659A1 (en) | 2002-04-04 |
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