EP1285476B1 - Dispositif de transmission d'energie et de signaux electriques a large bande au moyen de coupleurs directifs - Google Patents

Dispositif de transmission d'energie et de signaux electriques a large bande au moyen de coupleurs directifs Download PDF

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Publication number
EP1285476B1
EP1285476B1 EP01944909A EP01944909A EP1285476B1 EP 1285476 B1 EP1285476 B1 EP 1285476B1 EP 01944909 A EP01944909 A EP 01944909A EP 01944909 A EP01944909 A EP 01944909A EP 1285476 B1 EP1285476 B1 EP 1285476B1
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EP
European Patent Office
Prior art keywords
signals
coupling
conductor structure
unit
directional coupler
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
Application number
EP01944909A
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German (de)
English (en)
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EP1285476A1 (fr
Inventor
Georg Lohr
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.)
Schleifring und Apparatebau GmbH
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Schleifring und Apparatebau GmbH
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Publication date
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Publication of EP1285476A1 publication Critical patent/EP1285476A1/fr
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/06—Movable joints, e.g. rotating joints
    • H01P1/061—Movable joints, e.g. rotating joints the relative movement being a translation along an axis common to at least two rectilinear parts, e.g. expansion joints
    • 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
    • H01F2038/146—Inductive couplings in combination with capacitive coupling

Definitions

  • the invention relates to a device for transmitting electrical signals or energy between a plurality of mutually movable units.
  • the first of these transmission techniques uses a stripline for transmission, while the second of these transmission techniques employs a ladder structure consisting of a plurality of discrete reactive elements.
  • This offers the advantage of a very high interference suppression.
  • Both ladder systems are not connected at the ends to a closed ring like the first cited ladder system. They are open and can be adapted to any trajectory. At both ends of these conductor structures there is a terminating element for reflection-free termination.
  • the signal is fed in firmly a suitable location in the ladder structure.
  • the signal transmission always takes place from the conductor structure to a unit movably arranged with respect to this.
  • this system has serious disadvantages in various applications. If z. B.
  • the object of the invention is to provide according to the claim 1, a device for contactless transmission of electrical signals, which allows transmission from a movable unit to the conductor structure or the simultaneous transmission of signals in both directions.
  • a symmetrical conductor structure operated with a differential signal is used which is terminated without reflection at at least one end.
  • This conductor structure can be any arrangement for conducting electromagnetic waves, such as arrangements of dummy elements or strip lines.
  • at least two directional couplers are provided, which cause the direction separation of the signals of the two directors.
  • a particularly advantageous embodiment of the arrangement is designed such that signals can be transmitted in both directions.
  • the signal transmission direction from the conductor pattern to a movable element will be referred to as the first transmission direction, the opposite direction as the second transmission direction.
  • the signal transmission takes place in the first direction by feeding the transmission signal at a fixed predetermined point in the conductor structure.
  • it makes sense to put the feed point in the middle of the conductor structure, ie, the same distance from both ends.
  • the signal propagation times at both ends of the conductor structure are the same length and correspondingly the phase shift is equal to zero. This leads when passing over the conductor ends to a continuous phase without jumps.
  • the signal transmission in the second Direction is in the manner described above from the movable unit to the conductor structure.
  • the receiver of the second direction can here be attached to the conductor structure at the same coupling point as the transmitter for the first direction.
  • d. h. Data can be transmitted in only one of the two directions at the same time.
  • a further advantageous embodiment of the invention consists in that the signals of the first and the second data transmission direction are separated from one another by means of directional couplers. This allows simultaneous transmission in both directions (full-duplex operation).
  • At least one of the two signals for the first or the second direction is additionally modulated onto a carrier. If this carrier is selected outside the transmission range of the other signal, then a simple separation of the two signals in duplex mode is possible.
  • At least one directional coupler for direction-selective decoupling of the signals is integrated into the carrier of the conductor structure.
  • At least one directional coupler for separating the direction of the signals is integrated into the supply line to the coupling-in point of the conductor structure.
  • both the input and the decoupling of signals in the conductor structure by relative to these movable units This allows signal transmission between units moving at different relative speeds.
  • an additional fixed coupling and decoupling of signals to the conductor structure is provided.
  • At least one movable relative to the conductor structure coupling unit is designed as a directional coupler. This allows signals to be coupled in and out depending on the direction. This allows a better separation of transmit and receive signals.
  • a receiver is permanently connected at both ends of the conductor structure. Furthermore, at least two movable transmitting units are provided, which are designed as directional couplers. These transmission units are arranged so that the first transmission unit emits the signals in the direction of the first receiver assigned to it. The second transmitting unit is arranged to transmit its signals in the opposite direction to its associated receiver.
  • a transmitter for the first signal transmission direction and a receiver for the second signal transmission direction are coupled by means of a directional coupler at least one end of the conductor structure.
  • This directional coupler can be constructed according to the prior art with line elements or even discrete components, such as transformers.
  • For receiving the signals of the first transmission direction designed as a directional coupler receiving element is provided.
  • the transmission or the coupling of the transmission signals in the second transmission direction via a second relative to the conductor structure movable coupling unit. To avoid over-coupling of the signals of the mobile transmitter to the mobile receiver, this must be located on the side of the receiver which is remote from the transmitter associated with the first signal transmission direction.
  • At least one transmitter or receiver is firmly coupled to the conductor structure via directional couplers, and a movable transmitter, which has a coupling element designed as a directional coupler, is provided.
  • the movable receiving unit can be executed here without any directional selection, if it is located on the side of the movable transmitter, which faces away from the end of the conductor structure, which is connected to the receiver of the second signal transmission direction.
  • Fig. 1 shows an image for the simultaneous transmission of two channels.
  • a receiving device is arranged at each end of the conductor structure.
  • the coupling of the signals from the mobile units via coupling elements, which are designed as directional coupler (20), (21).
  • the coupling direction of both directional couplers (20), (21) points in opposite directions to the respective associated receivers. It is in each case the transmitter for the first transmission direction with T1, the associated receiver with R1.
  • the elements of the second transmission direction are labeled T2 and R2.
  • the symmetrically designed conductor structures (1) are shown as simple lines in this and the following illustrations.
  • the coupling elements for signal input or output are designed as directional couplers, these are realized as symmetrical components. If directional couplers are coupled via lines to the conductor structure or coupling elements, then these can be constructed either symmetrically or asymmetrically.
  • An asymmetric structure is useful if the directional coupler via a Symmetrierelement such as a balun is coupled to the symmetrically constructed conductor structure.
  • Fig. 2 shows a similar arrangement with reverse data transmission direction.
  • transmitters (T1), (T2) are arranged at both ends of the conductor structure.
  • the associated receivers (R1), (R2) are arranged movably via coupling elements, which are designed as directional couplers (20), (21).
  • the coupling direction of the two directional couplers is opposite, so that each receiver receives only the signals of its associated transmitter.
  • Fig. 3 shows an arrangement in which at one end of the conductor structure, a transmitter (T1) and a receiver (R2) are coupled via directional couplers.
  • the transmitter (T1) feeds the signal into the conductor structure for the first transmission direction
  • the directional coupler (22) selectively conducts the signal which comes from the conductor structure to the receiver (R2) of the second transmission direction.
  • a directional coupler (20) is provided, which selectively transmits the signals from the direction of its associated transmitter (T1) to the receiver (R2).
  • a transmitter which transmits its signals by means of a direction-unselective coupling element (27) in the conductor structure.
  • the signal of this transmitter now propagates in both directions in the conductor structure. It is on the one hand via the directional coupler connected to the conductor structure, the receiver (R2) of the second signal direction.
  • the second wave traveling in the opposite direction is absorbed by the reflection-free termination (3) of the conductor pattern.
  • Fig. 4 shows an arrangement in which compared to the previous arrangement, the direction-selective elements are reversed.
  • the transmitter (T2) of the second transmission direction is coupled to the conductor structure via a directional coupler (20).
  • the movable receiver is coupled to the conductor structure via a direction-unselective coupling element (29).
  • directional selectivity in the mobile receiver is not necessary since the mobile transmitter signal (T2) is transmitted only in the direction of the receiver (R1) fixedly connected to the conductor pattern.
  • FIG. 5 shows a further arrangement in which directional couplers are used for signal input and output coupling of the movable units. This arrangement has over the previous two arrangements the advantage that the decoupling between the movable transmitter and the movable receiver is much higher.
  • Fig. 6 shows an arrangement in which the transmitter (T1) for the first transmission direction and the receiver (R2) for the second transmission direction by means of a directional coupler (22) are firmly connected to the conductor structure. Furthermore, a movable combined transmitting and receiving unit is provided, in which the signals from transmitter (T2) and receiver (R1) are likewise separated via directional couplers (23). For coupling or decoupling the Signals is a direction unselective coupling element (29) is used.
  • Fig. 7 shows an arrangement as it can be preferably used for rotational transmission or at least in closed trajectories.
  • the coupling of the transmitter for the first signal transmission direction (T1) and the receiver (R2) for the second signal transmission direction by a directional coupler (26) takes place approximately in the middle of the conductor structure.
  • the coupling can take place at any point of the conductor structure.
  • the signal phases of the signals at the ends should be as equal as possible. This can be achieved by the same signal propagation time of both signals and thus by the same conductor lengths.
  • the unit movable relative to this conductor structure is designed such that it can transmit and receive data from any position of the conductor structure.
  • the transmission of the data (T2) from the mobile unit takes place with the direction-unselective coupling element (27).
  • the reception of the signals (R1) takes place depending on the relative position of the fixed coupling unit to the movable coupling unit either via one of the two directional coupler (24) or (25).
  • the signal (T1) is coupled into the conductor structure and coupled via the directional coupler (25) to the receiver (R1).
  • the directional coupler (24) can decouple only a negligible signal component because of the wrong direction.
  • the linking of the two directional couplers takes place in the linking unit (28) optionally via an adder or else via a changeover switch, which can be controlled by a position encoder, for example.
  • FIG. 8 shows an improved embodiment of the arrangement shown in FIG. 7. If, in the arrangement from FIG. 7, the coupling-in element (27) is located directly above the stationary coupling point of the transmission signal (T1) or the reception signal (R2), reception is not possible since the transmission signal is transmitted via the conductor structure in the directions of the signals largest coupling loss along the directional coupler (24) and (25) moves. Thus, only a very small signal component can be extracted.
  • the ladder structure is divided into two parts. Both pieces are as before complete the entire conductor structure at both ends by the terminating impedances (2), (12) and (3), (13) without reflection.
  • the stationary feed points are located close to each other at a distance which, however, is at least as great as one of the two directional couplers (24) or (25) used for the movable signal extraction plus the length of the coupling element (27). This ensures that at least one of the two directional couplers (24) or (25) receives a signal of the direction (T1) in the signal direction of low attenuation.
  • the two signals decoupled by the directional couplers (31) and (32) are linked together via a unit (33).
  • This unit (33) can be designed as an adder or else also contain a switch, which switches position-dependent or signal-strength-dependent between the two signals from the directional coupler (31) or (32).

Landscapes

  • Near-Field Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Connection Structure (AREA)
  • Optical Communication System (AREA)

Claims (10)

  1. Système de transmission, à large bande, des signaux ou de l'énergie entre au moins deux unités mobiles l'une relativement à l'autre le long d'une voie quelconque, composé d'une première unité, qui comprend une structure à conducteurs symétrique, opérée par un signal différentiel, à au moins une extrémité terminée sans réflexion, dans laquelle une onde électromagnétique peut se propager, ainsi qu'au moins une deuxième unité, qui renferme une unité de couplage pour le couplage ou respectivement de découplage des signaux électriques,
    caractérisé en ce
    qu'au moins deux coupleur directionnels (20, 21, 22, 23, 24, 25, 26, 31, 32) sont disposés, qui réalisent la séparation des directions des deux signaux pur la transmission simultanée des signaux en les deux sens.
  2. Système selon la revendication 1,
    caractérisé en ce
    que le point d'alimentation du signal émis dans la structure à conducteurs est monté au point correspondant à la mi-longueur du conducteur au cas d'une trajectoire fermée, en particulier circulaire, du mouvement.
  3. Système selon la revendication 1 ou 2,
    caractérisé en ce
    que des étages excitateurs (T1, T2) et/ou des éléments récepteurs (R1, R2) sont couplés moyennant des coupleurs directionnels (20, 21, 22, 23, 24, 25, 26, 31, 32) à ladite structure à conducteurs afin de séparer les signaux émis ou respectivement reçus.
  4. Système selon une quelconque des revendications 1 à 3,
    caractérisé en ce
    qu'au moins un coupleur directionnel (22, 26, 31, 32) est intégré dans ladite structure à conducteurs pour le couplage ou respectivement découplage des signaux.
  5. Système selon une quelconque des revendications 1 à 4,
    caractérisé en ce
    qu'au moins un étage excitateur (T1, T2) est présent à un modulateur pour la modulation des signaux émis, et qu'au moins un élément récepteur (R1, R2) comprend un démodulateur correspondant.
  6. Système selon une quelconque des revendications 1 à 5,
    caractérisé en ce
    qu'au moins une unité de couplage, mobile relativement à ladite structure à conducteurs, est réalisée sous forme de coupleur directionnel (20, 21, 24, 25) pour le couplage ou respectivement découplage en fonction de la direction.
  7. Système selon une quelconque des revendications 1 à 6,
    caractérisé en ce
    qu'un récepteur respectif (R1, R2) est raccordé, de manière fixe, aux deux extrémités de la structure à conducteurs, et qu'au plus une première unité de couplage (20) mobile, réalisée sous forme d'un coupleur directionnel, est disposée d'une telle manière, qu'elle émet surtout en direction vers ledit premier récepteur (R1) affecté à elle, et qu'au plus au moins une deuxième unité de couplage (21), réalisée sous forme d'un coupleur directionnel, est disposée d'une telle manière, qu'elle transmet ses signaux surtout en une direction vers ladite deuxième unité réceptrice (R2) affectée à elle.
  8. Système selon une quelconque des revendications 1 à 6,
    caractérisé en ce
    qu'un émetteur (T1) pour la première direction des données est couplé à une extrémité de la structure à conducteurs, et qu'un récepteur (R2) pour la deuxième direction des données est couplé moyennant un coupleur directionnel (22), et en ce qu'au plus une première unité de découplage, réalisée sous forme mobile et conçue en tant que coupleur directionnel (20) pour la réception des données dans la première direction de transmission des données, et qu'au plus au moins une deuxième unité de couplage mobile (27) est disposée pour le couplage des signaux dans la deuxième direction de transmission des signaux.
  9. Système selon une quelconque des revendications 1 à 6,
    caractérisé en ce
    qu'un émetteur (T1) pour la première direction de transmission des signaux ainsi qu'un récepteur (R2) pour la deuxième direction de transmission des signaux sont couplés à au moins une extrémité de la structure à conducteurs via des coupleurs directionnels (22), et en ce qu'une unité de couplage mobile, qui est raccordée à un émetteur (T2) pour la deuxième direction de transmission des signaux, est réalisée sous forme d'un coupleur directionnel (20), et qu'au plus une autre unité réceptrice mobile (R1) est disposée pour la première direction de transmission des signaux.
  10. Système selon la revendication 8,
    caractérisé en ce
    que ladite deuxième unité de couplage mobile (27) est réalisée sous forme d'un coupleur directionnel pour le couplage des signaux dans la deuxième direction de transmission des données.
EP01944909A 2000-05-05 2001-05-07 Dispositif de transmission d'energie et de signaux electriques a large bande au moyen de coupleurs directifs Expired - Lifetime EP1285476B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10021670 2000-05-05
DE10021670A DE10021670A1 (de) 2000-05-05 2000-05-05 Vorrichtung zur breitbandigen elektrischen Signal- bzw. Energieübertragung mit Übertragungsstrecke mit Richtkopplern
PCT/DE2001/001717 WO2001086750A1 (fr) 2000-05-05 2001-05-07 Dispositif de transmission d"energie et de signaux electriques a large bande au moyen de coupleurs directifs

Publications (2)

Publication Number Publication Date
EP1285476A1 EP1285476A1 (fr) 2003-02-26
EP1285476B1 true EP1285476B1 (fr) 2006-06-21

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EP01944909A Expired - Lifetime EP1285476B1 (fr) 2000-05-05 2001-05-07 Dispositif de transmission d'energie et de signaux electriques a large bande au moyen de coupleurs directifs

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Country Link
US (1) US7212101B2 (fr)
EP (1) EP1285476B1 (fr)
JP (1) JP2003533114A (fr)
AT (1) ATE331309T1 (fr)
AU (1) AU2001267298A1 (fr)
DE (3) DE10021670A1 (fr)
WO (1) WO2001086750A1 (fr)

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DE102010008858B4 (de) * 2010-02-22 2013-01-17 Sew-Eurodrive Gmbh & Co. Kg Anordnung zur berührungslosen Energieübertragung
DE102010009073B4 (de) * 2010-02-23 2013-01-17 Sew-Eurodrive Gmbh & Co. Kg Anordnung zur berührungslosen Energieübertragung
JP6066620B2 (ja) * 2012-08-10 2017-01-25 学校法人慶應義塾 バスシステム及び電子装置
US8837876B2 (en) 2013-01-08 2014-09-16 L-3 Communications Corporation Systems and methods for implementing optical and RF communication between rotating and stationary components of a rotary sensor system
US9213144B2 (en) 2013-01-08 2015-12-15 L-3 Communications Corporation Systems and methods for providing optical signals through a RF channel of a rotary coupler
DE102013215045B4 (de) * 2013-07-31 2023-05-04 Siemens Healthcare Gmbh Dreheinheit mit einer Vorrichtung zur drahtlosen Datenübertragung zwischen zwei relativ zueinander bewegbaren Teilen sowie Verfahren zur drahtlosen Datenübertragung zwischen zwei relativ zueinander bewegbaren Teilen
EP3103688B1 (fr) 2015-06-09 2018-12-05 Krauss-Maffei Wegmann GmbH & Co. KG Procede et dispositif de transmission de signal au moyen d'une bague d'un vehicule militaire

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Also Published As

Publication number Publication date
EP1285476A1 (fr) 2003-02-26
DE10021670A1 (de) 2001-11-15
US20030132815A1 (en) 2003-07-17
AU2001267298A1 (en) 2001-11-20
ATE331309T1 (de) 2006-07-15
WO2001086750A1 (fr) 2001-11-15
DE10191877D2 (de) 2003-04-17
DE50110267D1 (de) 2006-08-03
JP2003533114A (ja) 2003-11-05
US7212101B2 (en) 2007-05-01

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