EP1040606A1 - Systeme de transmission optique sans fil d'energie et de donnees - Google Patents

Systeme de transmission optique sans fil d'energie et de donnees

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Publication number
EP1040606A1
EP1040606A1 EP98961253A EP98961253A EP1040606A1 EP 1040606 A1 EP1040606 A1 EP 1040606A1 EP 98961253 A EP98961253 A EP 98961253A EP 98961253 A EP98961253 A EP 98961253A EP 1040606 A1 EP1040606 A1 EP 1040606A1
Authority
EP
European Patent Office
Prior art keywords
data
processing device
data processing
wireless
channel
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.)
Withdrawn
Application number
EP98961253A
Other languages
German (de)
English (en)
Inventor
Jürgen HAIBLE
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP98961253A priority Critical patent/EP1040606A1/fr
Publication of EP1040606A1 publication Critical patent/EP1040606A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/806—Arrangements for feeding power
    • H04B10/807—Optical power feeding, i.e. transmitting power using an optical signal

Definitions

  • the invention relates to an identification system for the transmission, processing and storage of data.
  • This system contains at least a first and a second data processing unit.
  • the first data processing unit contains at least first means for wireless radiation of energy and second means for wireless reception of data.
  • the second data processing device contains at least third means for converting the energy radiated wirelessly by the first means of the first data processing device into electrical supply energy, and fourth means for the wireless transmission of data to the second means of the first data processing device.
  • the first data processing device can be a so-called writing and reading device, for example.
  • a practical embodiment of the second data processing device can be, for example, a so-called mobile data carrier.
  • Such an exemplary arrangement can be drawn as an identification system.
  • data may be read out from a selected mobile data carrier in a contactless manner by a central writing and reading device.
  • This volume can be in a group of volumes.
  • data can also be written to one or more mobile data carriers without contact.
  • the data carrier or data carriers must be supplied with electrical supply energy at least for the duration of a data retrieving, ie reading, or at least for the duration of a data storing, ie writing.
  • energy-storing elements in the mobile data carriers, such as batteries should be avoided. the. Instead, the required electrical supply energy should also be transmitted without contact.
  • inductive identification systems In practice, a distinction can be made between so-called inductive identification systems, RF identification systems and optical identification systems for the wireless transmission of energy and data. Basically, different types of electrical components must be used for wireless radiation and the reception of data and energy.
  • Inductive identification systems have the disadvantage, on the one hand, that the inductive coupling with the distance between a first data processing device, which is usually in the form of a so-called writing and reading device, and a second data processing device, which is usually in the form of a mobile data carrier, is strong decreases.
  • the range of such a system is severely limited due to the limitation of the maximum field strength.
  • the inductive coupling can be significantly disturbed by metallic objects.
  • RF identification systems also called “radio frequency” or high-frequency identification systems
  • high frequencies or microwaves are used for wireless transmission
  • one frequency in the "radio frequency” range is used for data transmission and another frequency in the “radio frequency” range is also used for energy transmission.
  • Electrical antennas are used for data and energy transmission.
  • the disadvantage of high-frequency identification systems is that in the second data processing device, which is usually in the form of a mobile data carrier, a battery must be used from a short range of about 50 cm. This is necessary because the maximum permissible field strength of the first data processing device, which is usually designed in the form of a so-called writing and reading device, is no longer sufficient to supply a data carrier from the electromagnetic high-frequency field.
  • a further disadvantage with high-frequency identification systems is that a so-called separation of data carriers, i.e. It is difficult to specifically activate a single, selected data carrier from a group of data carriers by means of a read and write device.
  • visible light or infrared light is used in optical identification systems for wireless transmission. Wavelengths that are in the nanometer range occur in the transmission range.
  • Optoelectronic or photoelectric components for example light-emitting and photodiodes or lasers, are used for radiation or reception. During transmission, limit values, for example with regard to the laser protection classes, must be observed.
  • visible light is used for energy transmission and infrared light used for data transmission.
  • Optoelectronic components are required for data and energy transmission.
  • the invention is based on the object of specifying an identification system which, despite dispensing with energy-storing elements, such as Batteries that have a longer range than conventional identification systems.
  • the object is achieved according to the characterizing part of claim 1 with an identification system in which the first means of the first data processing device and the third means of the second data processing device are designed such that an optoelectronic channel for wireless energy transmission is present, and the fourth means of the second data processing device and the second means of the first data processing device are designed such that there is a first high-frequency, electromagnetic channel for wireless data transmission from the second to the first data processing device.
  • the invention is based on the fact that wavelength ranges so different are used for energy transmission and data transmission that the transmission to different Chen based physical principles.
  • an optoelectronic channel is used for the energy transmission and a high-frequency, electromagnetic channel is used for the data transmission in at least one transmission direction. Visible light can preferably be used in the optoelectronic channel for energy transmission.
  • Another advantage of the identification system according to the invention is that there is no mutual interference between the optoelectronic channel for energy transmission and the high-frequency channel for data transmission. No complex filter circuits are thus necessary in the first and second data processing devices.
  • FIG. 1 shows the block diagram of an identification system according to the
  • FIG. 2 shows a schematic illustration of the mode of operation of the identification system according to FIG. 1,
  • FIG. 3 shows the block diagram of an identification system according to the
  • FIG. 5 shows a schematic illustration of the mode of operation of the identification system according to FIG. 3,
  • FIG. 6 shows the basic circuit diagram for an exemplary embodiment of an identification system according to the block diagram of FIG. 3,
  • FIG. 7 shows the basic circuit diagram for a first exemplary embodiment of an identification system according to the block diagram of FIG. 4,
  • FIG. 8 shows the basic circuit diagram for a second exemplary embodiment of an identification system according to the block diagram of FIG. 4.
  • Figure 1 shows the block diagram of an identification system according to the invention, which is designed as an example as a "read-only" identification system. This can be implemented, for example, as a so-called “simple read-only” identification system, which automatically triggers a data transmission when it is illuminated via the optoelectronic channel used for wireless energy transmission.
  • the first data processing device 1 has an internal device for data processing. This controls all processes and is shown symbolically without further connections as block 15 in Figure 1.
  • the first data processing device 1 also has first means 22 for wireless energy radiation, which generate an optoelectronic channel 7 for wireless energy transmission from the first to a second data processing device 3a.
  • the second data processing device 3a also has an internal device for data processing and possibly data storage, which controls all processes e and is shown symbolically without further connections as block 27 in FIG. 1.
  • the second data processing device 3a also has third means 33 for converting the energy radiated wirelessly by the first means 22 of the first data processing device 1 via the optoelectronic channel 7 into electrical supply energy. All electrical equipment in the second data processing device 3a can be directly supplied with energy in this way. In particular, no additional batteries are required to store supply energy.
  • fourth means 24 for the wireless transmission of data are available. These generate a first high-frequency, electromagnetic channel 9 for wireless data transmission from the second data processing device 3a to the second means 24 of the first data processing device 1.
  • the first data Data processing device 1 is preferably designed as a so-called “reading device” and the second data processing device 3a as a mobile data carrier in particular.
  • Beitungsvorraumen Z to establish a data communication between the verar- the second data processing apparatus 3 is first activated by construction of the channel 7 to the opto-electronic energy transfer.
  • the first channel 9 for high-frequency, electromagnetic data transmission is set up by the second data processing device 3a.
  • the respective data contents are then transferred via the first channel 9 to the “reading device” 1 for further processing, in particular by arranging their internal data processing and storage unit 37.
  • FIG. 2 shows a schematic illustration of the mode of operation of an identification system according to FIG. 1 in the manner of a spatial top view.
  • the spatial spread of the individual, wireless transmission channels 5 is symbolically visualized.
  • a first data processing device 1 designed as a reading device communicates with a second data processing device 3a designed as a data carrier.
  • the exemplary identification system contains several Elements that correspond to the type of a second data processing device.
  • FIG. 2 shows, by way of example, 2 such elements 3a and 3b designed as mobile data carriers.
  • a channel 7 for optoelectronic energy transmission is first set up via the first means 22 of the reading device 1. This can practically consist in the form of a light beam, for example from bundled visible light or from laser light.
  • a light cone is shown with straight lines.
  • a desired data carrier in the example data carrier 3a, can hereby be illuminated in a targeted manner. This is isolated so that further data carriers, including the exemplary data carrier 3b, remain passive.
  • the energy supply of the individual data carrier 3a now takes place via the third means 33.
  • the latter can now send 33 data via the third means.
  • a channel 9 is set up for high-frequency, electromagnetic data transmission, which is shown symbolically in the example of FIG. 2 in a dashed line in the form of a curved radiation field. This radiation field reaches the second means 24 of the reading device 1, via which the data contained therein are received for further processing.
  • both isolation and data communication between the two data processing devices is possible without these having to be spatially aligned with one another in a special way. Furthermore, their distance can be considerably larger than in conventional systems. Large ranges can be achieved without any problems without permissible limit values being exceeded both with regard to the optoelectronic energy transmission channel and with regard to the high-frequency electromagnetic data transmission channel.
  • FIGS. 3 and 4 show block diagrams of two further versions of identification systems according to the invention, which are designed as so-called “read” and “write” identification systems.
  • Their wireless transmission channels 5 each contain a further channel for data transmission from the first to the second data processing device. It is a so-called “write” channel, via which data can also be written into the second data processing device.
  • the first data processing device can be designed as a so-called “writing and reading device”, via which data can not only be called up from a second data processing device designed as a data carrier, but can also be written into such a device 3 and 4 contain the first data processing device 1 of such an identification system for this purpose fifth means 26 for wireless radiation of data, furthermore the second data processing device 3a contains sixth means 40 for wireless reception of data from the fifth means of the first data processing device 1.
  • the fifth means 26 of the first data processing device 1 and the sixth means 40 of the second data processing device 3a are designed so that a second high-frequency electromagnetic channel 13 for wireless data transmission from the first data processing device 1 to the second data processing device 3a is present.
  • the first high-frequency, electromagnetic channel 9 and the second high-frequency, electromagnetic channel 13 advantageously form a high-frequency, electromagnetic channel bundle 8.
  • the first high-frequency, electromagnetic channel 9 can advantageously be in this channel bundle 8 by a direct high-frequency electromagnetic radiation and the second high-frequency, electromagnetic one Channel 13 are formed by an electromagnetic backscatter that is modulated onto this high-frequency radiation.
  • Possible advantageous, practical designs of the means 24, 26, 42, 40 are explained in more detail below using the example of the basic circuit diagram of FIG. 6.
  • the fifth means 26 of the first data processing device 1 and the sixth means 40 of the second data processing device 3a are designed such that there is an optoelectronic channel 11 for wireless data transmission from the first data processing device 1 to the second data processing device 3a.
  • the optoelectronic channel 7 for wireless energy transmission and the optoelectronic channel 11 for wireless data transmission from the first data processing device 1 to the second data processing device 3a advantageously form an optoelectronic channel bundle 47 and the optoelectronic channel 11 for wireless data transmission from the first data processing device 1 to the second data processing device 3a are formed by modulation onto the optoelectronic radiation used for wireless energy transmission.
  • Possible advantageous, practical embodiments of the means 22, 26, 33, 40 are explained in more detail below using the examples of the basic circuit diagrams of FIGS. 7 and 8.
  • FIG. 5 shows a schematic representation of the mode of operation of an identification system according to FIG. 3 in the manner of a spatial top view, which in principle corresponds to the representation of FIG. 2.
  • a preferably directed channel 7 for optoelectronic energy transmission is also first set up here via the first means 22 of the first data processing device 1, which is preferably designed as a writing and reading device.
  • This can practically consist in the form of a light beam, for example from bundled visible light or from laser light.
  • the boundaries of a light cone are shown with straight lines.
  • a desired second data processing device which is preferably designed as a mobile data carrier, can be hereby beam 3a, can be targeted. This separates them so that possible further data carriers, including the exemplary data carrier 3b, remain passive.
  • the energy supply of the individual data carrier 3a now takes place via the third means 33. This is now ready for use.
  • the writing and reading devices 1 initially use the fifth means 26 to build up a high-frequency, electromagnetic channel 13, which is used to transmit data to the sixth means 40 of the data carrier 3a.
  • 5 shows the channel 13 symbolically in the form of a curved radiation field designed with straight lines.
  • the data transmitted in the process (“write”) can be used, for example, to initialize the data carrier, which means that it is used for retransmission
  • a further channel 9 for high-frequency, electromagnetic data transmission is set up, which is represented symbolically in the example of FIG. 5 in a dashed line in the form of a further, curved radiation field.
  • the data are fed from the data carrier 3a into the radiation field 9 via the third means 33. This in turn reaches the second means 24 of the writing and reading device 1, via which the data contained in the radiation field are received for further processing.
  • FIG. 6 shows the basic circuit diagram for a first exemplary embodiment of an identification system according to the block diagram of FIG. 3. As already explained, two wireless transmission channels are set up in area 5 between the two data processing devices in this example.
  • first means 22 for wireless radiation of energy In the example in FIG. 6, these contain an electrical energy source 28, which can be designed, for example, in the form of a power pack.
  • An electrical energy source 23 is fed via this, which can be embodied, for example, in the form of an incandescent lamp or a laser beam.
  • a reflector can be provided to focus the light cone of an incandescent lamp.
  • the radiation is received by third means 33 in the second data processing device and converted into electrical supply energy.
  • These third means 33 can contain a solar cell, via the output line 34 of which the electrical operating means of a second data processing device, in particular designed as a mobile data carrier, are supplied with electrical energy.
  • An internal data storage and processing unit 27, the fourth means 42 for high-frequency wireless data radiation and any additional sixth means 40 for high-frequency wireless data reception are present as operating means.
  • the fourth means 42 contain a transmitting device 31, which is preferably designed in the form of a circuit that can be easily implemented in terms of circuitry.
  • the internal data storage and processing unit 27 feeds the data to be emitted, and converts it into modulated high-frequency signals for radiation via a high-frequency antenna 25, for example a dipole antenna.
  • the high-frequency data radiation channel is shown in the example in FIG. 6 by means of an arrow 9. Its radiation is received at least as a reading device designed first data processing device 1 via local second means 24 for data reception.
  • These in turn preferably contain a high-frequency antenna 21, which supplies the radiation to a connected high-frequency receiving device 19 for demodulation.
  • the reconstructed data can then be fed to the internal processing unit 15.
  • the first data processing device is designed as a write and read device according to the example of FIG. 6, additional, fifth means 26 for high-frequency data radiation are available. These preferably have a high-frequency transmission device 17 for converting data, which are provided by the data processing unit 15 for the mobile data carrier 3a. The data radiation in the direction of the data carrier 3a in turn takes place via the high-frequency antenna 21.
  • the high-frequency data transmission channel resulting from this is shown in the example in FIG. 6 by means of an arrow 13.
  • the radiation is in turn received by the high-frequency antenna 25 in the mobile data carrier and fed to a further data receiving device 29 for high-frequency demodulation.
  • the two high-frequency channels for data transmission are advantageously designed in the form of a channel bundle 8, in which e.g. the data of the channel 9 are modulated onto the radiation of the channel 13 as so-called backscatter. This is also known as load modulation.
  • a directed light cone 7 is emitted by the writing and reading device 1.
  • the data carrier 3a receives the light beam 7 with the solar cell 33 and feeds the internal electronic components.
  • the data carrier 3a is thus activated.
  • the writing and reading device 1 then sends out a carrier signal 13.
  • the data carrier 3a receives the carrier signal and modulates backscattering, for example on . This is in turn evaluated by the writing and reading device 1 for the purpose of identifying the respective data carrier 3a.
  • the antenna 25 of the data carrier 3a is electrically loaded in time with the data to be transmitted.
  • the writing and reading device 1 recognizes the data carrier 3a and in turn begins the data transmission by emitting a modulated radio frequency 13.
  • the data carrier 3a can detect the start of the data transmission, for example by evaluating the radio frequency signal, evaluating a time window, or a combination of both measures .
  • the data carrier 3a demodulates the high-frequency signals and carries out data processing. This can e.g. Write access to the internal data storage and processing unit, or the beginning of its own high-frequency data radiation include. In order to emit its own data, the data carrier 3a waits until an unmodulated carrier 13 is received again by the writing and reading device 1. Then the antenna 25 of the data carrier 3a is loaded in time with the data to be transmitted.
  • Figure 7 shows the basic circuit diagram for a first exemplary embodiment of an identification system according to the block diagram of Figure 4. This differs from the example of Figure 6 in that for data transmission from the first data processing unit 1 to the second data processing unit 3a not a high frequency, but also a optoelectronic channel 11 is present.
  • the fifth means 26 for data radiation on the side of the first data processing unit 1 and the sixth means 40 for receiving data on the side of the second data processing unit 3a are thus not designed using high-frequency technology components, but optoelectronic components. Infrared radiation is particularly suitable as a medium for the channel 11.
  • the fifth means 26 thus advantageously have an optoelectronic transmission device 35 which receives the data to be emitted from the processing unit 15, converts it and converts it into an optoelectronic one Radiating element 37 supplies.
  • This can be in the form of one or more infrared light-emitting diodes or infrared laser diodes.
  • the embodiment of FIG. 7 has the advantage that a particularly reliable separation of a second data processing unit can be achieved by designing both the optoelectronic channel for energy transmission and the optoelectronic channel for data transmission in a focused manner.
  • the sixth means 40 for receiving data have photoelectric receiving element 41, which can advantageously be designed in the form of a photodiode 41. This is followed by an amplifier and decoding device 39. As in the example in FIG. 6, visible light is also advantageously used in the circuit of FIG. 7 for energy transmission on channel 7 and high-frequency radiation on channel 9 used for data transmission from data carrier 3a to writing and reading device 1.
  • FIG. 8 finally shows the basic circuit diagram for a second exemplary embodiment of an identification system according to the block diagram of FIG. 4.
  • channel 7 for wireless energy transmission and channel 11 for wireless data transmission from the first to the second data processing device are in the form of a second, optoelectronic channel bundle 47 for the simultaneous transmission of energy and data.
  • the data can advantageously be modulated onto the high-energy light beam.
  • the optoelectronic transmission device 35 of the fifth means 26 thus imprints the data to be transmitted directly into the supply voltage or the supply current for light source 23.
  • the sixth means 40 for wireless data reception can be implemented in the same manner as in the example in FIG.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un système d'identification comportant un premier dispositif de traitement de données (1) pourvu de premiers moyens (22), servant à l'émission d'énergie par rayonnement, et de deuxièmes moyens (24), servant à la réception de données, un second dispositif de traitement de données (3a) pourvu de troisièmes moyens (33), servant à la transformation de l'énergie, et de quatrièmes moyens (42), servant à l'émission par rayonnement de données. Les premiers et troisièmes moyens forment un canal optoélectronique (7) pour la transmission d'énergie sans fil. Les quatrièmes et deuxièmes moyens forment un canal haute fréquence (9) pour la transmission de données sans fil du second dispositif de traitement de données au premier.
EP98961253A 1997-12-17 1998-12-04 Systeme de transmission optique sans fil d'energie et de donnees Withdrawn EP1040606A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98961253A EP1040606A1 (fr) 1997-12-17 1998-12-04 Systeme de transmission optique sans fil d'energie et de donnees

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP97122321A EP0924880A1 (fr) 1997-12-17 1997-12-17 Système de transmission optique d'alimentation et de données
EP97122321 1997-12-17
PCT/EP1998/007908 WO1999031829A1 (fr) 1997-12-17 1998-12-04 Systeme de transmission optique sans fil d'energie et de donnees
EP98961253A EP1040606A1 (fr) 1997-12-17 1998-12-04 Systeme de transmission optique sans fil d'energie et de donnees

Publications (1)

Publication Number Publication Date
EP1040606A1 true EP1040606A1 (fr) 2000-10-04

Family

ID=8227820

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97122321A Withdrawn EP0924880A1 (fr) 1997-12-17 1997-12-17 Système de transmission optique d'alimentation et de données
EP98961253A Withdrawn EP1040606A1 (fr) 1997-12-17 1998-12-04 Systeme de transmission optique sans fil d'energie et de donnees

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97122321A Withdrawn EP0924880A1 (fr) 1997-12-17 1997-12-17 Système de transmission optique d'alimentation et de données

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WO (1) WO1999031829A1 (fr)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
FI114678B (fi) * 2003-04-17 2004-11-30 Ailocom Oy Langaton valvontajärjestelmä
EP2288053A1 (fr) * 2009-08-19 2011-02-23 Mechaless Systems GmbH Récepteur optique destiné à la réception de lumière
DE102017000775A1 (de) * 2016-04-18 2017-10-19 Kastriot Merlaku Stromversorgungs- und Daten-Signal-Transfer-System für eine rotierende / schwenkbare Kamera beliebiger Art, vorzugsweise für eine bewegbare Kamera eines Mobiltelefons oder einer Drohne

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Publication number Priority date Publication date Assignee Title
JPS6133032A (ja) * 1984-07-26 1986-02-15 Toshiba Eng Co Ltd 光通信装置
FR2683106B1 (fr) * 1991-10-25 1993-12-03 Thomson Brandt Armements Systeme de transmission et de conversion electrique de signaux optiques de puissance modules en frequence.
DE4220042A1 (de) * 1992-06-22 1993-12-23 Uwe Lukasiewicz Kommunikationssystem mit berührungsloser Übertragung von Daten
US5393989A (en) * 1993-08-02 1995-02-28 Motorola, Inc. Self biased electrically isolated remote switch powered by an optical or acoustic coupling

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Title
See references of WO9931829A1 *

Also Published As

Publication number Publication date
EP0924880A1 (fr) 1999-06-23
WO1999031829A1 (fr) 1999-06-24

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