WO2008151715A1 - Système - Google Patents

Système Download PDF

Info

Publication number
WO2008151715A1
WO2008151715A1 PCT/EP2008/004161 EP2008004161W WO2008151715A1 WO 2008151715 A1 WO2008151715 A1 WO 2008151715A1 EP 2008004161 W EP2008004161 W EP 2008004161W WO 2008151715 A1 WO2008151715 A1 WO 2008151715A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna part
near field
leaky waveguide
antenna
characteristic impedance
Prior art date
Application number
PCT/EP2008/004161
Other languages
German (de)
English (en)
Inventor
Claus SCHÖPFER
Kurt Blau
Ulrich Stockenberger
Original Assignee
Sew-Eurodrive Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sew-Eurodrive Gmbh & Co. Kg filed Critical Sew-Eurodrive Gmbh & Co. Kg
Priority to EP08758751.5A priority Critical patent/EP2165386B1/fr
Publication of WO2008151715A1 publication Critical patent/WO2008151715A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3225—Cooperation with the rails or the road
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/203—Leaky coaxial lines

Definitions

  • the invention relates to a system.
  • the invention is therefore based on the object to form a system with improved data exchange.
  • controller and the carriage are provided for data exchange
  • the antenna part is provided in the near field of the electromagnetic radiation emerging from the leaky waveguide and, in particular together with a matching network connected to the antenna part, is adapted to a corresponding characteristic impedance.
  • other devices in this way can be arranged in the near field and connected to the data exchange. They are not necessarily movable, as the aforementioned car. Preferably, they are executed as clients of a master client system.
  • the advantage here is that electromagnetic radio waves that are emitted by other transmitters and arrive as a far field in the region of the antenna part generate such a large signal level that the reception of the leaking from the leaky waveguide radiation caused signal level is disturbed.
  • the signals of these far-field transmitters are suppressed by the adaptation of the antenna to the near field and thus after passing through the matching network with antenna part and in particular additional filter much smaller than the signal which is associated with emerging from the leaky waveguide in the near field radiation. Jammers are so toned down.
  • the leaky waveguide generates a weak field in relation to a radio frequency antenna. Only by mismatching the far field of a jammer and adapting it to the near field of the leaky waveguide does the desired signal have a higher level than the jamming signal. Of course, there are also positions of the truck where the jammers are so far away that their signal level due to the distance is less than the signal level immediately at the leaky wave.
  • the invention allows in any case very small distances to the jammer and jammer with high transmission power, as long as the antenna part is in the far field of this jammer. The closer the antenna part on the leaky waveguide and the more the associated characteristic impedance deviates from the characteristic impedance of the electromagnetic waves propagating in the surrounding medium, the greater the signal-level separation, and thus the better the signals can be correspondingly suppressed.
  • Near field is understood to mean a distance between transmitter and receiver of approximately one wavelength. For larger distances far field exists.
  • the advantage here is that even at more than 2% or even 10% a significant attenuation of the jammer radiation can be achieved.
  • the surrounding medium is air and / or the natural characteristic impedance is substantially 377 ohms.
  • this characteristic impedance for the propagation of waves in air has a fixed value and thus the antenna part is tuned such that the corresponding tuned value deviates as much as possible from this natural value.
  • the antenna part with matching network continues to be adjusted with its resonance frequency essentially to the frequency of the radiation emerging from the leaky waveguide.
  • the characteristic impedance is less than 350 ohms, in particular less than 320 ohms, or more than 400 ohms, in particular more than 420 ohms.
  • the advantage here is that in this dimensioning good results of the suppression can be achieved.
  • the indicated values indicate the range of values which is advantageous for the invention and for achieving a good signal-to-noise ratio, air at atmospheric pressure being provided as the ambient medium.
  • the corresponding distances to the natural characteristic impedance of the far field should be provided.
  • the matching network is connected to a filter for suppressing signals which are transmitted by interfering transmitters as the far field and are received in addition to the useful signal.
  • the corresponding characteristic impedance is selected in such a way and the filter is designed in such a way that the output of the antenna part, the matching network and the circuit part comprising the filter projects the useful signal originating from the leaky waveguide as the only signal over the noise.
  • the carriage in particular comprising its drive and an electronic circuit, comprises a secondary coil which is inductively coupled to a laid in the system primary conductor system in which a medium-frequency current, in particular with a frequency between 10 and 100 kHz, impressed wherein the secondary coil is connected in parallel or in series with a capacitor such that the associated resonant frequency substantially corresponds to the frequency of the medium-frequency current.
  • a medium-frequency current in particular with a frequency between 10 and 100 kHz
  • the secondary coil is connected in parallel or in series with a capacitor such that the associated resonant frequency substantially corresponds to the frequency of the medium-frequency current.
  • the frequency of the data transmission is chosen much higher than the middle frequency of the Primary current.
  • the resonant transmission of an enormous power for example, of 300 watts, 1 kW and more transferable.
  • even higher-frequency current components can be modulated onto the primary current, which can be used by means of the secondary coil as a receiving means for data transmission. In this case, however, advantageously only frequencies below 1 or 10 MHz are used, which is too low
  • Data transfer rates leads.
  • the modulated data can be used, for example, for security-related information.
  • a redundant data transmission system can be produced. If, therefore, the leaky-waveguide-caused data transmission becomes faulty, data transmission for safety-related functions can be executed by modulation in an emergency.
  • even a constant transmission of check digits or check bits by modulating is executable.
  • the electromagnetic radiation used for data exchange has a higher, in particular at least ten times or a hundred times higher, frequency than the center frequency.
  • the advantage here is that the mutual influence is reduced.
  • the antenna part with associated matching network is adapted to the characteristic impedance of the near field of the radiating leaky waveguide, in particular coaxial with recesses in the conductor direction, and / or a mismatch is provided to the far field of the jammer.
  • the advantage here is that an increase in the signal level difference between the near field and the far field is possible.
  • the carriage comprises transmitting and receiving means for data exchange with stationary provided transmitters, in particular jammers.
  • the advantage here is that a data exchange at entry or stay in predefinable areas of the system is executable.
  • the antenna part with connected matching network is better adapted to the emerging from the leaky waveguide near field as to the emerging from the transmitting means near field.
  • the antenna part with associated matching network is better adapted to the characteristic impedance of the near field of the radiating leaky waveguide than to the emerging from the transmitters near field, ie in particular the resistance of the antenna part including matching network a smaller difference to the characteristic impedance of emerging from the leaky waveguide near field as to that from the Sending means has exiting near field.
  • the antenna part has an antenna rod which is laid parallel to a metal surface, in particular metal foil or sheet metal, in particular just laid metal foil or flat sheet metal of the antenna part,
  • the metal surface has a greater length extension than the antenna rod, in particular in the bar direction.
  • the antenna part is arranged such that the antenna rod is arranged between the metal surface and the leaky waveguide.
  • the wavelength to which the antenna part is tuned is greater than
  • a part of the electronic circuit is shown, which is provided on a carriage.
  • an antenna part 1 is mounted on the car, which is moved along a stationarily laid in the plant leaking waveguide.
  • Radio waves used in information transmission are provided in such a frequency range and the antenna part has such a small distance from the leaky waveguide that the wave field propagation between the leaky waveguide and the antenna part substantially outweighs the near field region.
  • a coaxial cable which has recesses provided in the cable direction, so that a part of the electromagnetic radiation provided in the coaxial cable emerges into the environment of the cable.
  • the reverse case so the radiation of radiation into the cable interior is provided.
  • the recesses are provided as a slot in the cable direction or as a cable direction regularly or irregularly arranged small slots or openings.
  • the antenna member 1 comprises the antenna and optionally associated components.
  • a capacitor connected to an antenna wire or components for forming an active antenna 2 is included in the antenna part.
  • the output signal of the antenna part 1 is fed to a matching element 2.
  • the internal resistances of the antenna member are adaptable to the subsequent circuit parts.
  • the adjusting element is designed such that it adapts the antenna-side characteristic impedance to a coaxial cable, for example, 50 ohms assigned to its output side.
  • an attenuator 3 is provided, which is provided for damping the signals originating from sources of interference.
  • the useful signal is attenuated.
  • the associated level is higher and also exceeds the attenuation of the noise level in which the jammer levels are pressed.
  • the subsequent signal electronics 4 an undisturbed and thus error-free or at least little error-prone signal can be fed.
  • Antenna part and adapter are inventively designed and dimensioned such that the signal transmission is adjusted and adapted to near field transmission.
  • the antenna part with matching element would have been adapted to a characteristic impedance of 377 ohms. In the invention, the value deviates greatly.
  • the antenna part with adapter is adapted to the near field and thus adapted to a characteristic impedance, which deviates more than 10 ohms from the value of 377 ohms.
  • the signals of the interfering transmitter are even suppressed such that they fall into the noise.
  • the only useful signal that can be detected is the signal leaving the leaky waveguide. The better the adaptation of the antenna to the near field of the electromagnetic radiation emerging from the leaky waveguide, the better the signal-to-noise ratio can be predicted.
  • WLAN transmitters or other transmitting devices which transmit in the same frequency band or in nearby frequency bands as the electromagnetic radiation emerging from the leaky waveguide occur as jamming transmitters.
  • the jammers are also useful in further embodiments of the present invention to transmit data to a receiver in a local area around the respective jammer.
  • receivers devices which are stationary in the machine or system
  • receivers Also devices usable which are mitbewegbar on the car.
  • an additional data stream is exchangeable and thus the data transmission rate can be increased or data exchange between components executable, which is necessary only in this area.
  • data is exchanged which contains travel commands for the carriage in the data stream transmitted by the leaky waveguide and position information of the carriage in the data flow received by the leaky waveguide.
  • a traveling controller is then supplied with a large data stream from the jammer to control or regulate a complex movement of axes in real time or to load new software for maintenance, for example.
  • ambient media other than air are used.
  • the corresponding value for the respective medium is used. Accordingly, then the adaptation of the antenna part 1 is carried out with a correspondingly large distance to this value.
  • fitting member, attenuator and optionally components of the antenna part is not arranged one behind the other according to Figure 1 but in a different order and / or mixed.
  • the carriage belongs to a rail-mounted driverless floor transport system or a monorail conveyor. But other rail-bound or railless system are providable by means of the invention.
  • the carriage carries more transmitting means, but which are provided for data exchange with stationary receiving means.
  • the antenna part with associated matching network is better adapted to the characteristic impedance of the near field of the radiating leaky waveguide as to the emerging from the transmitting means near field, in particular so the resistance of the antenna part including matching network has a smaller difference to the characteristic impedance of the emerging from the leaky waveguide near field as emerging from the transmitting means near field.
  • the data transmission by means of a leaky waveguide can be carried out with wavelengths between 1 and 100 cm, preferably in the range of 10 cm, in particular between 2 and 4 GHz.
  • FIG. 2 a shows a specific exemplary embodiment of a near field antenna part according to the invention, wherein a housing bottom part 20 is made of an electrically insulating material, such as plastic, with fastening tabs 21 and can be closed with a cover 25, as shown in FIG.
  • a housing bottom part 20 is made of an electrically insulating material, such as plastic, with fastening tabs 21 and can be closed with a cover 25, as shown in FIG.
  • an antenna rod 23 which is aligned parallel to the plane of the housing bottom, wherein on the housing bottom a metal foil 22 is arranged.
  • the leaky waveguide 24 is arranged substantially parallel to the antenna rod.
  • an electrical terminal 26 is attached to which a coaxial cable is connectable, in particular with the coaxial connector part is screwed, whose center conductor is electrically connected to the antenna rod 23 and whose outer conductor is electrically connected to the metal foil 22.
  • the geometric dimensioning of the antenna rod 23 and the metal foil 22 is designed such that the antenna is tuned to the near field.

Landscapes

  • Near-Field Transmission Systems (AREA)
  • Waveguide Aerials (AREA)

Abstract

L'invention concerne un système comprenant un chariot et une commande fixe, cette commande et ce chariot étant reliés à des fins d'échange de données. Le chariot comprend un élément d'antenne (1) au moyen duquel il peut être déplacé le long d'un guide d'ondes à fuite installé dans le système. Cet élément d'antenne (1) est situé dans le champ proche du rayonnement électromagnétique émis par le guide d'ondes à fuite et il est adapté à une impédance caractéristique correspondante, en particulier avec un réseau d'adaptation (2) relié à l'élément d'antenne.
PCT/EP2008/004161 2007-06-11 2008-05-26 Système WO2008151715A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08758751.5A EP2165386B1 (fr) 2007-06-11 2008-05-26 Système

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027350 2007-06-11
DE102007027350.0 2007-06-11

Publications (1)

Publication Number Publication Date
WO2008151715A1 true WO2008151715A1 (fr) 2008-12-18

Family

ID=39639472

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/004161 WO2008151715A1 (fr) 2007-06-11 2008-05-26 Système

Country Status (3)

Country Link
EP (1) EP2165386B1 (fr)
DE (1) DE102008025073B4 (fr)
WO (1) WO2008151715A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009024694B4 (de) 2009-05-28 2018-09-27 Sew-Eurodrive Gmbh & Co Kg Anlage und Verfahren zum Betreiben einer Anlage
DE102013002227B4 (de) * 2013-02-11 2014-11-13 Sew-Eurodrive Gmbh & Co Kg Anordnung zur Signalübertragung und Anlage mit dieser Anordnung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1163899B (de) 1961-06-27 1964-02-27 Acec Vorrichtung zur UEbertragung zwischen einer beweglichen Fernsehkamera und einem ortsfesten Empfaenger
US4789049A (en) * 1987-04-02 1988-12-06 Mitsubishi Denki Kabushiki Kaisha Signal transmitting equipment for elevator
DE4446779A1 (de) 1994-12-24 1996-06-27 Daimler Benz Ag Anordnung zur berührungslosen induktiven Übertragung elektrischer Leistung
DE19512107A1 (de) 1995-04-03 1996-10-24 Daimler Benz Ag Spurgeführtes Transportsystem mit berührungsloser Energieübertragung
EP0743698A1 (fr) * 1995-05-17 1996-11-20 Siemens Schweiz AG Dispositif de transmission pour systèmes de communications routières
DE19726949A1 (de) * 1996-06-28 1998-01-29 Daimler Benz Ag Schlitzleitung und Koppelelement zur berührungslosen Informationsübertragung mittels elektromagnetischer Wellen zwischen zwei relativ zueinander bewegten Gegenständen sowie Verbindungselement zur feldgekoppelten Verbindung von zwei Teilstücken einer Schlitzleitung sowie Anschlußelement zum feldgekoppelten Anschluß einer Schlitzleitung an mindestens einen elektromagnetischen Wellenleiter anderer Art
DE10245505A1 (de) 2002-09-27 2004-04-08 Schleifring Und Apparatebau Gmbh Vorrichtung zur Übertragung digitaler Signale zwischen beweglichen Einheiten mit analoger Filterung
WO2005037623A1 (fr) 2003-10-16 2005-04-28 Dürr Systems GmbH Systeme de transport guide
DE102006043481A1 (de) * 2005-11-25 2007-05-31 Sew-Eurodrive Gmbh & Co. Kg Halterung und Anlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2239642C (fr) * 1997-06-26 2001-05-29 Geza Dienes Antenne de rayonnement de systemes de communication cable-a-vehicule
DE19823750A1 (de) * 1998-05-27 1999-12-09 Kathrein Werke Kg Antennenarray mit mehreren vertikal übereinander angeordneten Primärstrahler-Modulen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1163899B (de) 1961-06-27 1964-02-27 Acec Vorrichtung zur UEbertragung zwischen einer beweglichen Fernsehkamera und einem ortsfesten Empfaenger
US4789049A (en) * 1987-04-02 1988-12-06 Mitsubishi Denki Kabushiki Kaisha Signal transmitting equipment for elevator
DE4446779A1 (de) 1994-12-24 1996-06-27 Daimler Benz Ag Anordnung zur berührungslosen induktiven Übertragung elektrischer Leistung
DE19512107A1 (de) 1995-04-03 1996-10-24 Daimler Benz Ag Spurgeführtes Transportsystem mit berührungsloser Energieübertragung
EP0743698A1 (fr) * 1995-05-17 1996-11-20 Siemens Schweiz AG Dispositif de transmission pour systèmes de communications routières
DE19726949A1 (de) * 1996-06-28 1998-01-29 Daimler Benz Ag Schlitzleitung und Koppelelement zur berührungslosen Informationsübertragung mittels elektromagnetischer Wellen zwischen zwei relativ zueinander bewegten Gegenständen sowie Verbindungselement zur feldgekoppelten Verbindung von zwei Teilstücken einer Schlitzleitung sowie Anschlußelement zum feldgekoppelten Anschluß einer Schlitzleitung an mindestens einen elektromagnetischen Wellenleiter anderer Art
DE10245505A1 (de) 2002-09-27 2004-04-08 Schleifring Und Apparatebau Gmbh Vorrichtung zur Übertragung digitaler Signale zwischen beweglichen Einheiten mit analoger Filterung
WO2005037623A1 (fr) 2003-10-16 2005-04-28 Dürr Systems GmbH Systeme de transport guide
DE102006043481A1 (de) * 2005-11-25 2007-05-31 Sew-Eurodrive Gmbh & Co. Kg Halterung und Anlage

Also Published As

Publication number Publication date
EP2165386B1 (fr) 2013-04-24
DE102008025073B4 (de) 2019-01-03
DE102008025073A1 (de) 2008-12-18
EP2165386A1 (fr) 2010-03-24

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