EP1261792B1 - Procede d'emission et de reception, en particulier pour la detection d'un indicateur d'identite - Google Patents

Procede d'emission et de reception, en particulier pour la detection d'un indicateur d'identite Download PDF

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Publication number
EP1261792B1
EP1261792B1 EP01915093A EP01915093A EP1261792B1 EP 1261792 B1 EP1261792 B1 EP 1261792B1 EP 01915093 A EP01915093 A EP 01915093A EP 01915093 A EP01915093 A EP 01915093A EP 1261792 B1 EP1261792 B1 EP 1261792B1
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EP
European Patent Office
Prior art keywords
transmitting
receiving device
receiving
further transmitting
transmitter
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
EP01915093A
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German (de)
English (en)
Other versions
EP1261792A1 (fr
Inventor
Alain Marc Bernard Brillon
Klaus Hofbeck
Wolfgang Piesch
Johannes Ilg
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.)
Continental Automotive GmbH
Continental Automotive France SAS
Original Assignee
Continental Automotive GmbH
Continental Automotive France SAS
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 Continental Automotive GmbH, Continental Automotive France SAS filed Critical Continental Automotive GmbH
Publication of EP1261792A1 publication Critical patent/EP1261792A1/fr
Application granted granted Critical
Publication of EP1261792B1 publication Critical patent/EP1261792B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G07C2009/00365—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks in combination with a wake-up circuit
    • G07C2009/0038—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks in combination with a wake-up circuit whereby the wake-up circuit is situated in the keyless data carrier
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle

Definitions

  • the invention relates to a method for transmitting and receiving signals between at least one first transmitting and receiving device and at least one further transmitting and receiving device, in particular for unlocking and / or locking a vehicle and transmitting and receiving devices and an arrangement thereof.
  • Such methods and transmitting and receiving devices are used, for example, in vehicle technology to enable the unlocking of the vehicle or the vehicle doors and / or disabling the anti-theft device in a manner that is as comfortable as possible for an operator.
  • a device for transmitting and receiving signals between at least one first transmitting and receiving device and a further transmitting and receiving device is known.
  • the first transmitting and receiving device transmits a request signal when detecting the further transmitting and receiving device of this further transmitting and receiving device via the first communication link.
  • a second communication link is established between the first and the further transmitting and receiving device.
  • a mobile transponder sends a signal to a vehicle-side receiver as soon as the transponder has received an excitation signal.
  • the excitation signal that the vehicle-side transmitter sends out is a low-frequency signal and the signal that the mobile transponder transmits a high-frequency signal.
  • a door opening of the vehicle takes place only when the high-frequency signal of the mobile transponder, which is encrypted and includes a vehicle code, has been correctly identified.
  • a message transmission system which minimizes radio interference and manipulation through the use of a relay transmitter.
  • Two transmitting and receiving devices are designed such that the responding transmitting and receiving device scans a plurality of radio channels that registers signal and / or noise levels on the channels. The communication between the two transmitting and receiving devices takes place on one of these channels, wherein the selection of the channel based on the evaluation of the specific signal and / or noise strength.
  • the present invention is therefore based on the object, a method for transmitting and receiving .Signals between at least one first transmitting and receiving device and at least one further transmitting and receiving device as well as a transmitting and receiving device and an arrangement therefor, which ensure a high degree of security against unauthorized interference while at the same time as low as possible energy consumption.
  • the second communication path can be configured both bi-directionally and unidirectionally, this route being accessible due to the short time interval also very energy-consuming transmission methods, such as very high frequencies, high amplitudes on the transmitter side or very sensitive, constructed for example by means of amplifier amplifiers, energy-consuming receivers.
  • the structure of the second communication link as LF system, in which the signal transmission takes place essentially by a magnetic inductive coupling. Since a certain area within a radius of 1 to 3 meters, for example, is to be covered by a base station located in a vehicle, in which an ID transmitter is detectable, such systems are very energy-consuming.
  • corresponding antennas for example loop antennas, can be used on the transmitter side in the base station and possibly operated with high powers via power amplifiers.
  • the ID transmitter On the receiver side, in the ID transmitter the. Receiver via a measuring amplifier unit are made more sensitive, so that already in cooperation with normal LF transmitters (without power amplification) enters a range enlargement and in particular by means of the above-described power amplified LF transmitters a higher range can be achieved.
  • magnetic-inductive coupling is not influenced and disturbed by organic matter and reflections. Due to the predetermined time interval in a very small time window disturbances outside of this time window also remain unconsidered, so that substantially increases the interference immunity of the overall system by these measures.
  • an exact range can be set independently of locations and objects or persons in this area, so that overreaching is advantageously achieved and accordingly unwanted tripping effects are avoided.
  • the received power is measured in the further transmitting and receiving device, that is, for example, an ID transmitter by means of a measuring device.
  • the further transmitting and receiving device that is, for example, an ID transmitter by means of a measuring device.
  • various embodiments are conceivable, for example in the form of one or more threshold values, by achieving such actions as displaying this threshold value, storing the threshold value, evaluating a plurality of received threshold values or even the transmission of such measurement results or even evaluations to the at least one first transmitting and receiving device , For example, the base station in a vehicle, are possible.
  • the beginning of the predetermined time interval need not coincide with the time of a correctly received.
  • Request signal coincide, but may also be delayed by a predetermined time interval.
  • a future time of the beginning of the Time interval to integrate as information in the request signal.
  • the duration of the predetermined time interval may be predetermined or adjustable via corresponding electronic devices, for example RF element or corresponding digital counter in the ID transmitter, or may also be included as information in the request signal.
  • the method according to the invention is particularly advantageous if it is carried out several times with different parameters and corresponding measurement results are determined.
  • the transmission power and / or receiver sensitivity can be changed and / or varied by spatially different transmission ranges, for example by means of a plurality of spatially differently arranged antennas or combined antennas with different radiation angles.
  • the corresponding measurement results can then be transmitted individually to the other transmitting and receiving device or collected in advance and transmitted in a block. It is also conceivable that a further evaluation of these measurement results not only takes place in the at least first transmitting and receiving device, but also takes place before a transmission as a final or intermediate result in the further transmitting and receiving device.
  • field distortions and calibration values of the transmitting and receiving device can also be used for as exact an evaluation of the received field strength values as possible by means of a table which is stored as a datum in an evaluation unit.
  • the first communication path is advantageously as a very low-energy communication link educated. This is the case, for example, with conventional RF systems in the MHz range, for example 433 MHz or 867 MHz, which are advantageously very space-saving and, due to their wide use, very cost-effective to implement.
  • the illustrated base station has a control unit 1, a transmitting unit 3, a receiving unit 5 and an LF transmitter, for example, a ping generator 7.
  • the transmitting unit 3 is in this case also connected to a schematically illustrated antenna 4 as the receiver unit 5 with its antenna 6.
  • the transmitting unit 3 and receiving unit 5 shown here form a combined transmitting and receiving unit, either with a transmitting antenna. 4 and a receiving antenna 6 is connected or a single antenna, which acts both as a transmitting and as a receiving antenna has.
  • the base station has a so-called ping generator 7, which emits via its antenna 8, for example in the form of a loop antenna, a very low-frequency field in the LF range, for example 100 to 300 KHz with predominantly magnetic field component.
  • a so-called ping generator 7 which emits via its antenna 8, for example in the form of a loop antenna, a very low-frequency field in the LF range, for example 100 to 300 KHz with predominantly magnetic field component.
  • the in Fig. 2 ID transmitter shown has, as well as the base station, a control unit 10, a receiver unit 13, a transmitting unit 15, which are each connected to their antennas (receiving antenna 14 and transmitting antenna 16) on.
  • a control unit 10 receives antennas from the base station
  • a receiver unit 13 receives antennas from the base station
  • a transmitting unit 15 which are each connected to their antennas (receiving antenna 14 and transmitting antenna 16) on.
  • an LF receiver 17 in the form of a ping receiver, via its receiving antenna 18 in cooperation with the ping generator 7 and the transmitting antenna 8 of the base station, a magnetically inductive Can generate coupling.
  • bidirectional communication (first communication path) takes place via the transmitter 3, 15 and receiver units 5, 13, for example in the low-energy RF range, where, as in conventional systems, a certain proximity is to be assumed an ID transmitter can be detected.
  • a request signal is sent by the base station upon detection of an ID transmitter by means of the first communication link via this first communication link, which notifies the ID transmitter that at a certain When a signal is transmitted within a short time window over a second communication link.
  • an LF path is selected, which advantageously allows a magnetic inductive coupling, which is subject to the aforementioned disadvantages, such as shielding, reflection and unauthorized interference in less or no extent.
  • the base station switches on its control unit 1, the ping generator 7, which emits the magnetic inductive signal via its loop antenna 8.
  • the ID transmitter for correct reception of such a signal with low transmission power to a measuring amplifier, which in Fig. 2 not shown in detail.
  • this measuring amplifier which may be integrated in the ping receiver 17 or the control unit 10 or may be arranged as a separate unit in the path from the loop antenna 18 to control unit 10, the sensitivity of the ping receiver 17 is increased accordingly to a correct Structure of this magnetic inductive communication path within a desired range, for example, several meters, especially one to three meters to allow.
  • the communication path is interrupted in both the base station and in the ID transmitter by switching off the ping generator 7 as well as the ping receiver 17 and / or the measuring amplifier, not shown.
  • the determined measurement result is then communicated by the ID transmitter via the first communication link, that is to say the transmitter 15, the receiver 5 of the base station and used by the ID transmitter for unlocking the doors and / or deactivating theft protection.
  • a plurality of loop antennas 8 in the vehicle, so that via one or more ping generators 7 connected thereto from different locations of the vehicle, for example left door, right door, rear etc., Send fields and depending on the detected in the ID transmitter reception services, which are either communicated to the base station as a result or collected in advance in the ID transmitter and possibly there already undergone a partial or full evaluation, or in the base station be subjected to such an evaluation, the position of the ID transmitter, so the direction with respect to the base station, can be detected.
  • the described embodiment describes the method according to the invention with reference to a passive access system for a motor vehicle, it is of course also applicable to an active access system, ie the first communication path resulting from the operation of a button or the like in the ID transmitter.
  • the inventive method and an arrangement of the transmitting and receiving devices according to the invention for carrying out such a method is not limited to the vehicle technology, but in many areas such as building services, surveillance technology, counting systems, etc. applicable.
  • the invention can also be used for the secure detection of a transmitting and receiving device for monitoring moving objects, such as persons, where such a moving object is located or how often it passes certain positions (counting systems).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon l'invention, entre un premier et un autre dispositif émetteur-récepteur, un signal de demande est transmis par l'intermédiaire d'une première voie de communication bidirectionnelle, une seconde voie de communication est établie pour un intervalle de temps prédéterminé, en fonction dudit signal de demande, et la puissance de réception des autres dispositifs émetteurs-récepteurs est mesurée au moyen d'un dispositif de mesure.

Claims (16)

  1. Procédé pour émettre et recevoir des signaux entre au moins unpremierdispositif d'émission et de réception (3, 5) et au moins un autre dispositif d'émission et de réception (15, 13), enparticulierpourdéverrouilleret/ou verrouiller un véhicule,
    a) dans lequel la présence de l'autre dispositif d'émission et de réception (15, 13) est contrôlée au moyen d'une première voie de communication bidirectionnelle partant du premier dispositif d'émission et de réception (3, 5),
    b) le premier dispositif d'émission et de réception (3, 5) transmet, suite à la détection de l'autre dispositif d'émission et de réception (15, 13), un signal de demande à cet autre dispositif d'émission et de réception (15, 13) via la première voie de communication,
    c) en fonction de ce signal de demande, une seconde voie de communication est établie pendant un intervalle de temps prédéterminé entre le premier (3, 5) et l'autre dispositif d'émission et de réception (15, 13), et
    d) la puissance de réception dans les autres dispositifs d'émission et de réception (15, 13) est mesurée au moyen d'un dispositif de mesure.
  2. Procédé selon la revendication 1, caractérisé en ce que le résultat de la mesure est transmis via la première voie de communication au premier dispositif d'émission et de réception (3, 5).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le premier dispositif d'émission et de réception (3, 5) ou l'autre dispositif d'émission et de réception (15, 13) exploite le résultat de la mesure au moyen d'une unité d'exploitation.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les première et seconde voies de communication se situent dans différentes plages de fréquences.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, pour établir les secondes voies de communication dans l'autre dispositif d'émission etderéception (15, 13), uneunitéd'amplificationdemesure est mise en circuit.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le début et la durée de l'intervalle de temps prédéterminé sont déduits du contenu informatif du signal de demande.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la seconde voie de communication se situe dans la plage des basses fréquences (LF).
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la seconde voie de communication est unidirectionnelle.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, pour identifier la position de l'autre dispositif d'émission et de réception (15, 13), les étapes a) à d) sont réalisées à plusieurs reprises au moyen d'une puissance d'émission différente et/ou de plages d'émission localement différentes.
  10. Procédé selon la revendication 9, caractérisé en ce que les résultats de mesure sont exploités dans le premier dispositif d'émission et de réception (5, 3) au moyen d'une unité d'exploitation.
  11. Procédé selon la revendication 10, caractérisé en ce que l'unité d'exploitation exploite les résultats de mesure pour détecter l'autre dispositif d'émission et de réception (15, 13) au moyen d'un tableau fixe.
  12. Dispositif d'émission et de réception pour la mise en oeuvre du procédé selon l'une quelconque des revendications précédentes, comprenant une première unité d'émission et une première unité de réception (5, 3) pour une première voie de communication avec au moins un autre dispositif d'émission et de réception (15, 13),
    caractérisé en ce que
    le dispositif d'émission et de réception présente au moins une autre unité d'émission et/ou une autre unité de réception (7,17) pouvant être mise (s) en circuit et/ou hors circuit, entre lesquelles, en fonction d'un signal de demande, une seconde voie de communication peut être établie pendant un intervalle de temps prédéterminé, ainsi qu'un dispositif de mesure, ce afin de mesurer la puissance de réception d'un autre dispositif d'émission et de réception.
  13. Dispositif d'émission et de réception selon la revendication 12, caractérisé en ce que la première unité d'émission et la première unité de réception (5, 3) se présentent sous la forme d'un émetteur RF et d'un récepteur RF.
  14. Dispositif d'émission et de réception selon la revendication 12 ou 13, caractérisé en ce que l'autre unité d'émission ou de réception (15, 13) se présente sous la forme d'un émetteur LF (7) ou d'un récepteur LF (17).
  15. Aménagement constitué d'au moins un premier dispositif d'émission et de réception (3, 5) et d'au moins un autre dispositif d'émission et de réception (15, 13) selon l'une quelconque des revendications 12 à 14.
  16. Aménagement selon la revendication 15, caractérisé en ce que le premier dispositif d'émission et de réception (3, 5) présente, comme autre unité d'émission et/ou de réception, un émetteur LF (7), tandis que l'autre dispositif d'émission et de réception (15, 13) présente, comme autre unité d'émission et/ou de réception, un récepteur LF (17).
EP01915093A 2000-03-09 2001-03-07 Procede d'emission et de reception, en particulier pour la detection d'un indicateur d'identite Expired - Lifetime EP1261792B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10011509 2000-03-09
DE10011509 2000-03-09
PCT/DE2001/000870 WO2001066886A1 (fr) 2000-03-09 2001-03-07 Procede d'emission et de reception, en particulier pour la detection d'un indicateur d'identite

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Publication Number Publication Date
EP1261792A1 EP1261792A1 (fr) 2002-12-04
EP1261792B1 true EP1261792B1 (fr) 2012-01-11

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US (1) US7023321B2 (fr)
EP (1) EP1261792B1 (fr)
JP (1) JP4727892B2 (fr)
WO (1) WO2001066886A1 (fr)

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JP2003526030A (ja) 2003-09-02
EP1261792A1 (fr) 2002-12-04
US7023321B2 (en) 2006-04-04
US20030016140A1 (en) 2003-01-23
JP4727892B2 (ja) 2011-07-20

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