EP0388792A1 - Dispositif de transmission - Google Patents

Dispositif de transmission Download PDF

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Publication number
EP0388792A1
EP0388792A1 EP90104899A EP90104899A EP0388792A1 EP 0388792 A1 EP0388792 A1 EP 0388792A1 EP 90104899 A EP90104899 A EP 90104899A EP 90104899 A EP90104899 A EP 90104899A EP 0388792 A1 EP0388792 A1 EP 0388792A1
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
toroidal coils
transmission
signals
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
EP90104899A
Other languages
German (de)
English (en)
Other versions
EP0388792B1 (fr
Inventor
Wilhelm T. Dipl.-Ing. Jahn
Werner Röschlau
Michael Dr.Med.Dr.Rer.Nat. Scherz
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.)
Scherz Michael Drmed Drrernat
Original Assignee
Scherz Michael Drmed Drrernat
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 Scherz Michael Drmed Drrernat filed Critical Scherz Michael Drmed Drrernat
Publication of EP0388792A1 publication Critical patent/EP0388792A1/fr
Application granted granted Critical
Publication of EP0388792B1 publication Critical patent/EP0388792B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a device for transmitting signals, which can be broken down into at least one AC voltage component, between a rotor and a stator from a transmitting unit to a receiving unit with the aid of pairs of toroidal coils, the coil turns of which form parts of the transmitting or receiving unit and which, with inductive coupling, coaxial with the axis of rotation of the Rotors are arranged.
  • a particular difficulty in signal transmission generally arises when one or more measuring devices rotate with the rotor, the time-varying measurement or output values of which are to be transmitted to a fixed receiving unit.
  • DE-PS 28 46 583 describes a device for transmitting measurement signals via a transformer from a rotor to a stator side and for transmitting a supply voltage via the same transformer from the stator to the rotor side.
  • a power oscillator with a low output impedance is provided on the stator side to generate the supply voltage, which has a substantially higher frequency than the frequency-modulated measurement signals, the oscillator being coupled to the transformer via a capacitor, and in which between the capacitor and the transmission coil, the measurement signals are decoupled at a point which is high-impedance under the transmission conditions, a rectifier arrangement for the supply voltage and a signal generator for the measurement signals being arranged on the rotor side and the measurement signals being able to be coupled in at one point between the rectifier and the transmission coil.
  • the prior art also includes an arrangement for temperature measurement on rotating shafts from DE-PS 958 600.
  • Two inductive transmitters are provided in connection with a bridge circuit, in one branch of which a resistance thermometer is switched on.
  • the bridge receives its supply voltage via the ring coil system of one transmitter, while the other ring coil system of another transmitter passes the measured value on to the display instrument.
  • the invention is based on the task of designing a device of the type described in the introduction in such a way that a contactless transmission of measured values and energy in connection with a speed-dependent evaluation or further processing can be achieved between a rotor and a stator.
  • the signal transmission should also be made possible with rotors rotating at high speed, for example above 5000 rpm.
  • the solution to this problem is, according to the invention, that at least one ring coil pair is provided for the voltage supply of components on the rotor, that at least one further ring coil pair is available for the transmission of the quantities to be measured on the rotor with a measuring device from the rotor to the stator, that for scanning a sensor element is provided for the rotor speed, and a switching unit is provided with the aid of which the measured values associated with the rotor speed are further processed or displayed.
  • the transmitting or receiving unit arranged on the rotor or on the stator can be designed in various ways. In general, rotor or stator boards equipped with electronic components are used. If only relatively weak electrical signals of low voltage or of low energy can initially be generated on the rotor, it is possible to arrange a preamplifier on the rotor board directly at the point of origin of the signals, for example in the immediate vicinity of a measuring device, and to transmit the already amplified signals to transmit the transmitting unit to the fixed receiving unit.
  • the transmission of signals can take place both from the rotor to the stator and vice versa. It is also possible to transmit signals between parts located in the direction of rotation relative to one another via at least one ring coil pair. The transmission can also be carried out intermittently in both directions.
  • An expedient embodiment of the elementary device described above can consist in that the ring coils lie in the recesses of a partial core, the distance between the two partial cores forming an air gap.
  • the Partial cores can advantageously be designed as circular disc cores that are open on one side towards the gap.
  • a wide variety of coil core materials, for example ferrites, known in transformer technology can be used as the material for the partial cores, the choice of material essentially depending on the frequency ranges to be transmitted.
  • electrical signals for example measured values taken from the rotor, can be transmitted without problems with appropriate preamplification from 4 ⁇ V.
  • the electrical signals to be transmitted can advantageously be transmitted as coding or as modulation of a carrier frequency.
  • measured values can be coded as a digital signal serially with a carrier frequency of approx. 200 kHz and inductively transmitted with an 8 bit data code with start and stop bit and a parity check bit from the rotor board to the stator board via the coupled ring coils.
  • Frequency identification takes place in the stator board and, if appropriate, the signals can advantageously be converted into a standardized computer-readable interface coding.
  • a shielding ring made of electrically conductive material, preferably of highly conductive metallic materials, for example of copper or aluminum, is arranged between two adjacent ring coils on the rotor or stator. This will produce an unwanted signal Transmission between the individual transmission paths avoided.
  • an adjustment potentiometer or the like such a shielding ring can advantageously be used to fine-tune the frequency of the transmitter or receiver unit by changing the damping (center frequency adjustment of the carrier).
  • the features of the invention provide a device for the transmission of electrical signals or voltages, which enables the measurement values specified on the rotor to be displayed or evaluated in conjunction with the rotor speed even at high speeds and rapid signal changes.
  • the rotor contains a circular disc-shaped partial core 1, which is provided with a rotary bearing 2 and which it drives via drive elements not shown in the drawing follows.
  • a further circular disk-shaped fixed partial core 3 is arranged coaxially with the rotatable circular disk-shaped partial core 1.
  • the two partial cores 1 and 3 consist of ferrite.
  • a free air gap 4 (a vacuum gap or a liquid gap would also be possible!) Of approximately 1 mm.
  • annular groove recesses 5, 7, 9 and 11, and 6, 8, 10 and 12 in which inductively coupled coaxial toroidal coils 13, 15, 17 and 19 and 14, 16, 18 and 20 are located.
  • the ring coils of the rotor 13, 15, 17 and 19 are, as indicated, connected to a rotor board 21 containing electronic switching or measuring elements.
  • the ring coils of the stator 14, 16, 18 and 20 are connected to corresponding stationary components 22, 23, 24, 25 for signal display or signal processing. It can be any arrangement for digital or analog signal processing and display, which are optionally at least partially combined in a stator board.
  • shielding rings 26, 27, 28 and 29, 30, 31 are embedded in the material of the partial cores 1.3, which act as short-circuit rings serve and prevent unwanted crosstalk between the individual systems.
  • FIG. 3 shows a functional diagram of a measuring device.
  • the innermost ring coil pair 13, 14 is used for voltage transmission from an alternating voltage source 32 of the stator to a rectifier unit 33 of the rotor, which supplies the operating voltage for a rotor board 21.
  • Another pair of toroidal coils 15, 16 is provided for transmitting an auxiliary voltage from an AC voltage source 34 to a rectifier unit 35.
  • This auxiliary voltage can be switched on using a switch 36.
  • the pair of toroidal coils 17, 18 is used to transmit the quantities to be measured on the rotor in a measuring device.
  • the measuring voltage U M originating from any measuring device is amplified in the rotor board 21 by an amplifier circuit and digitized in the A / D converter 37.
  • the digital signals, optionally modulated onto a carrier frequency, are transmitted to the receiver board 38 via the pair of ring coils 17, 18.
  • an additional pair of ring coils 19, 20 is provided for the transmission of switching commands.
  • a pushbutton 39 sends a switching pulse via a pulse device 40 to a switching device 41 on the rotor side, which, for example, gradually changes the degree of amplification of the measuring amplifier on the rotor board 21.
  • the signals transmitted by the rotor board 21 are forwarded from the stator board 38 to a computer 42 for direct computer processing.
  • a sensor element 43 which is actuated, for example, by a rotor-side permanent magnet, is provided, which inputs signals corresponding to the speed into a display unit 44.
  • the display unit 44 is connected to the stator board 38 and, via a connected plotter 45, enables a graphic representation of the course of the measuring voltage U M as a function of the rotor speed.
  • the device from the exemplary embodiment specified above was specially developed for carrying out an analysis method according to DE-PS 29 43 942.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Liquid Crystal Substances (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Vehicle Body Suspensions (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
EP90104899A 1989-03-18 1990-03-15 Dispositif de transmission Expired - Lifetime EP0388792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3908982A DE3908982A1 (de) 1989-03-18 1989-03-18 Uebertragungsvorrichtung
DE3908982 1989-03-18

Publications (2)

Publication Number Publication Date
EP0388792A1 true EP0388792A1 (fr) 1990-09-26
EP0388792B1 EP0388792B1 (fr) 1993-12-08

Family

ID=6376692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104899A Expired - Lifetime EP0388792B1 (fr) 1989-03-18 1990-03-15 Dispositif de transmission

Country Status (8)

Country Link
US (1) US5055775A (fr)
EP (1) EP0388792B1 (fr)
JP (1) JP2798472B2 (fr)
AT (1) ATE98391T1 (fr)
CA (1) CA2012408A1 (fr)
DE (2) DE3908982A1 (fr)
DK (1) DK0388792T3 (fr)
ES (1) ES2048879T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525459A1 (fr) * 1991-07-30 1993-02-03 Ulrich Dr.-Ing. Schwan Dispositif de transmission
EP0681276A1 (fr) * 1994-04-20 1995-11-08 SCHULER PRESSEN GmbH & Co. Méthode et dispositif pour la transmission de données, de signaux et d'énergie

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3024784B2 (ja) * 1990-09-26 2000-03-21 株式会社ブリヂストン タイヤ内部監視装置
US5221250A (en) * 1991-01-07 1993-06-22 Beckman Instruments, Inc. Coding of maximum operating speed on centrifuge rotors and detection thereof
JPH04326709A (ja) * 1991-04-26 1992-11-16 Matsushita Electric Ind Co Ltd 回転トランス
US5814900A (en) * 1991-07-30 1998-09-29 Ulrich Schwan Device for combined transmission of energy and electric signals
KR940002829Y1 (ko) * 1991-08-03 1994-04-23 주식회사 금성사 비데오 카세트 레코더의 회전헤드드럼장치
US5637973A (en) * 1992-06-18 1997-06-10 Kabushiki Kaisha Yaskawa Denki Noncontacting electric power transfer apparatus, noncontacting signal transfer apparatus, split-type mechanical apparatus employing these transfer apparatus and a control method for controlling same
US5821632A (en) * 1992-07-08 1998-10-13 Doduco Gmbh & Co. Dr. Eugen Durrwachter Arrangement, in particular in vehicles, for transmitting electric signals by connecting lines
DE4229566C2 (de) * 1992-09-04 1996-08-29 Rosenberger Hochfrequenztech Verfahren und Vorrichtung zur automatischen Erkennung eines über eine Stecker-Buchsenverbindung an ein Versorgungsgerät angeschlossenen Anschlußgerätes
GB2293522B (en) * 1994-09-02 1999-01-20 Ultra Electronics Ltd Rotary apparatus
JP2856698B2 (ja) * 1995-08-08 1999-02-10 株式会社東芝 回転電機用固定子巻線の静電容量測定装置とその方法ならびに回転電機
JPH09326736A (ja) * 1996-06-03 1997-12-16 Mitsubishi Electric Corp ワイヤレス送受信システム用２次側回路装置およびワイヤレス送受信システム用誘導コイル
KR20000068364A (ko) * 1997-07-03 2000-11-25 후루까와 준노스께 분리형 트랜스포머 및 분리형 트랜스포머를 이용한전송제어장치
NL1010340C2 (nl) * 1998-10-16 2000-04-18 Skf Eng & Res Centre Bv Lager met geïntegreerde transformator.
US6278210B1 (en) * 1999-08-30 2001-08-21 International Business Machines Corporation Rotary element apparatus with wireless power transfer
DE10240080A1 (de) * 2002-08-30 2004-03-11 Siemens Ag Verfahren zum draht- und berührungslosen Energie- und Datentransport und zugehörige Vorrichtung
DE10344055A1 (de) 2003-09-23 2005-04-21 Siemens Ag Induktiver Drehübertrager
DE102004032022A1 (de) * 2004-07-01 2006-01-19 Walter Dittel Gmbh Signalübertragung
US8967051B2 (en) * 2009-01-23 2015-03-03 Magnemotion, Inc. Transport system powered by short block linear synchronous motors and switching mechanism
US8616134B2 (en) * 2009-01-23 2013-12-31 Magnemotion, Inc. Transport system powered by short block linear synchronous motors
US9032880B2 (en) 2009-01-23 2015-05-19 Magnemotion, Inc. Transport system powered by short block linear synchronous motors and switching mechanism
EP2718141B1 (fr) 2011-06-07 2021-02-24 Magnemotion, Inc. Commande polyvalente d'un système de propulsion à moteur synchrone linéaire
US9746388B2 (en) * 2011-06-29 2017-08-29 Honeywell International Inc. Wireless telemetry using voltage and pulse intervals
EP3046801A4 (fr) 2013-09-21 2017-11-08 Magnemotion, Inc. Transport par un moteur linéaire pour l'emballage et d'autres usages
JP6567892B2 (ja) * 2015-06-24 2019-08-28 株式会社日立産機システム 回転軸センサ読み取り装置
EP3533522A1 (fr) 2018-02-28 2019-09-04 Alfa Laval Corporate AB Séparateur centrifuge et procédé de fonctionnement d'un séparateur centrifuge
DE102021212148A1 (de) 2021-10-27 2023-04-27 Mahle International Gmbh System mit elektrischem Drehtransformator

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR2428825A1 (fr) * 1978-06-12 1980-01-11 Electricite De France Transmission de grandeurs physiques entre deux pieces en rotation relative sous forme de modulation par impulsions codees
DE2932173A1 (de) * 1978-08-09 1980-03-06 Hitachi Ltd Verfahren und vorrichtung zum messen der physikalischen eigenschaften eines drehkoerpers an zahlreichen punkten
EP0133802A1 (fr) * 1983-08-16 1985-03-06 TDK Corporation Un transformateur tournant
DE2943942C2 (fr) * 1979-10-31 1989-10-26 Michael Dr.Med. Dr.Rer.Nat. 8520 Erlangen De Scherz

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DE3503347A1 (de) * 1985-02-01 1986-08-14 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Vorrichtung zur drahtlosen messsignaluebertragung
DE3503348C1 (de) * 1985-02-01 1986-06-19 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Ferromagnetischer Mehrfachschalenkern fuer elektrische Spulen
US4689546A (en) * 1985-12-18 1987-08-25 General Electric Company Internal armature current monitoring in large three-phase generator
DE3713305A1 (de) * 1987-04-18 1988-11-03 Heldt & Rossi Servoelektronik Tachogenerator fuer elektrische maschinen
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428825A1 (fr) * 1978-06-12 1980-01-11 Electricite De France Transmission de grandeurs physiques entre deux pieces en rotation relative sous forme de modulation par impulsions codees
DE2932173A1 (de) * 1978-08-09 1980-03-06 Hitachi Ltd Verfahren und vorrichtung zum messen der physikalischen eigenschaften eines drehkoerpers an zahlreichen punkten
DE2943942C2 (fr) * 1979-10-31 1989-10-26 Michael Dr.Med. Dr.Rer.Nat. 8520 Erlangen De Scherz
EP0133802A1 (fr) * 1983-08-16 1985-03-06 TDK Corporation Un transformateur tournant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525459A1 (fr) * 1991-07-30 1993-02-03 Ulrich Dr.-Ing. Schwan Dispositif de transmission
EP0681276A1 (fr) * 1994-04-20 1995-11-08 SCHULER PRESSEN GmbH & Co. Méthode et dispositif pour la transmission de données, de signaux et d'énergie
US5625352A (en) * 1994-04-20 1997-04-29 Schuler Pressen Gmbh & Co. Method and arrangement for transmitting data, signals and energy

Also Published As

Publication number Publication date
DK0388792T3 (da) 1994-02-14
CA2012408A1 (fr) 1990-09-18
EP0388792B1 (fr) 1993-12-08
JP2798472B2 (ja) 1998-09-17
ATE98391T1 (de) 1993-12-15
DE59003740D1 (de) 1994-01-20
DE3908982A1 (de) 1990-09-27
ES2048879T3 (es) 1994-04-01
JPH0327500A (ja) 1991-02-05
US5055775A (en) 1991-10-08

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