WO2014146949A1 - Dispositif de poignée de porte pour véhicule avec capteur de proximité capacitif et unité d'émission/réception nfc - Google Patents

Dispositif de poignée de porte pour véhicule avec capteur de proximité capacitif et unité d'émission/réception nfc Download PDF

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Publication number
WO2014146949A1
WO2014146949A1 PCT/EP2014/054825 EP2014054825W WO2014146949A1 WO 2014146949 A1 WO2014146949 A1 WO 2014146949A1 EP 2014054825 W EP2014054825 W EP 2014054825W WO 2014146949 A1 WO2014146949 A1 WO 2014146949A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
door handle
antenna coil
nfc
nfc antenna
Prior art date
Application number
PCT/EP2014/054825
Other languages
German (de)
English (en)
Inventor
Bernd Gerdes
Original Assignee
Huf Hülsbeck & Fürst 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 Huf Hülsbeck & Fürst Gmbh & Co. Kg filed Critical Huf Hülsbeck & Fürst Gmbh & Co. Kg
Publication of WO2014146949A1 publication Critical patent/WO2014146949A1/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
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3283—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle side-mounted antennas, e.g. bumper-mounted, door-mounted
    • 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
    • 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
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector
    • 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
    • G07C2209/64—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle using a proximity sensor

Definitions

  • the invention relates to an outside door handle for a
  • outside door handle at least one
  • Capacitive proximity sensor with at least one sensor electrode and a drive and evaluation circuit and a
  • Control circuit has.
  • a capacitive proximity sensor comprises a
  • the control and evaluation circuit measures the capacity of the
  • Electrode opposite to ground By approaching a hand of the
  • a corresponding ID transmitter If a corresponding ID transmitter is within the reception range, it reacts by transmitting an RF radio signal which comprises a unique identifier (ID).
  • ID a unique identifier
  • An RF receiver unit in the vehicle receives this signal and checks the access authorization based on the identifier. Unless the access authorization
  • the desire is also known that users of motor vehicles in everyday life as little as possible to be charged by entrained devices and keys for motor vehicles. There is therefore the desire to individual functions of the motor vehicle by using devices to
  • NFC Near Field Communication
  • the object of the invention is to save space for components for NFC communication in an outside door handle
  • the outside door handle according to the invention for a motor vehicle has at least one capacitive proximity sensor and a control circuit.
  • the proximity sensor comprises at least one sensor electrode and a control and evaluation circuit which serves, for example, both the control of the sensor electrode with certain voltage curves and the evaluation in the sense of measuring capacitance changes.
  • the capacitive proximity sensor has a sensor electrode in the form of a metal plate or layer, which via a
  • the outside door handle comprises at least one NFC module that can be coupled to an NFC antenna coil.
  • the NFC module is, for example, an integrated circuit with the required for bidirectional near field communication transmission, coding, reception and
  • One of the at least one sensor electrode is designed as an NFC antenna coil, and the terminals of the NFC antenna coil can be coupled to the NFC module via a coupling circuit.
  • the coupling circuit comprises, for example, a plurality of electronic switching components, optionally with associated control and evaluation circuits.
  • Coupling circuit, the drive and evaluation circuit and the NFC module are coupled to the control circuit which controls the coupling circuit such that the terminals of the NFC antenna coil in response to an operating state of the
  • Control circuit can be selectively connected to the NFC device or separated from the NFC device such that the NFC Antenna coil as the sensor electrode of the capacitive
  • Proximity sensor acts.
  • An operating state of the control circuit here is, for example, a state of the capacitance measurement or of an imminent NFC communication (eg transmission request or readiness for reception).
  • the use of a designed as NFC antenna coil sensor electrode reduces the number of components used for the outside door handle and thus the cost.
  • the controlled by the control circuit separation of the NFC module from the designed as NFC antenna coil sensor electrode capacitance measurement is not or only minimally influenced by the NFC module.
  • Control circuit controlled The control circuit has information on how to use each of the sensor electrode designed as an NFC antenna coil. The information is formed as the operating state of the control circuit.
  • control circuit controls the coupling circuit, the control and evaluation circuit and the NFC module. Between the functions of measuring capacity and NFC communication, for example, in fixed
  • Time intervals can be switched, or it can have a function priority.
  • the drive and evaluation circuit can be designed so that their influence on the NFC antenna coil
  • formed sensor electrode is low when used as an NFC antenna coil.
  • the permanent connection reduces the number of required components and parasitic effects.
  • the coupling circuit has a switching device for coupling one of Connect the NFC antenna coil to the control and evaluation circuit. This is advantageous when the input circuits coupled to the sensor electrode of the
  • Control and evaluation circuit would disturb the function of the NFC antenna coil.
  • Switching device contained in a component that also contains the control and evaluation circuit.
  • the switching device part of a connection circuit of a
  • This circuit also includes the drive and evaluation circuit that with the
  • the drive and evaluation circuit, the switching device of the coupling circuit and the control circuit in one
  • Microcontroller included.
  • One terminal of the sensor electrode designed as an NFC antenna coil is connected to a port of the microcontroller, and the terminal is disconnected from the drive and evaluation circuit by the port
  • a microcontroller may also contain other circuit parts or components for an NFC communication. As a result, the entire coupling circuit or even a part of the NFC module can be integrated into the microcontroller. The number of components and the influence of parasitic effects can be reduced.
  • control circuit has a arranged in an interior of the outside door handle microcontroller.
  • a microcontroller is a programmable block.
  • Programming can be used to implement new functions or, for example, to adapt the behavior of the door outside handle to changing conditions.
  • At least one further capacitive proximity sensor each of which is at least one
  • the sensor electrode designed as an NFC antenna coil and at least one of the sensor electrodes of the at least one further one
  • capacitive proximity sensor coupled to a common control and evaluation circuit. Due to this multiple use for different sensor electrodes, the number of required components can be reduced.
  • Analog switches are that they are realized on the one hand without mechanical switching components and on the other hand have a comparatively small capacity with relatively low internal resistance.
  • the circuit board can be rigid or flexible.
  • coupling capacitances and RF signal guides are highly dependent on the exact placement of the components to each other.
  • the components are spatially fixed to each other. Also, this type of assembly reduces costs.
  • Ladder has the advantage that no discrete component is needed.
  • At least the coupling circuit and the drive and evaluation circuit are also arranged on the printed circuit board which is designed as an NFC antenna coil. This allows the parasitic capacitances and inductances of the
  • Sensor electrode arranged.
  • the sensor electrode designed as an NFC antenna coil is separated from the NFC module, it is used as the sensor electrode of the capacitive proximity sensor.
  • Coupling circuit then form a spatial extent of
  • FIG. 1 shows a schematic view of a printed circuit board of an outside door handle according to the invention
  • Figure 2 is a block diagram of circuit components of an outside door handle according to the invention
  • Figure 3 is a block diagram of circuit components of an alternative embodiment of an inventive
  • Figure 1 shows a schematic representation of a
  • Printed circuit board 10 which is located in an interior of a
  • Embodiment of an outside door handle according to the invention is housed, wherein the printed circuit board shown is arranged in such a way in the longitudinal direction in the outside door handle that formed as an NFC antenna coil sensor electrode 20 in a
  • Metallization layer of the circuit board 10 is disposed adjacent to a lock cylinder.
  • This sensor electrode 20 should preferably be used as a sensor electrode of a capacitive sensor for detecting an approach of an operator body part,
  • a finger serve to initiate a locking or locking the door lock.
  • a plate formed as a sensor electrode 73 of a second capacitive proximity sensor is further arranged, for example, to detect the approach of an operator's body part, for. B. the hand of
  • the sensor electrode 20 designed as an NFC antenna coil has two connections 21, 22.
  • the terminals 21, 22 are connected to a coupling circuit 30.
  • the coupling circuit 30 is in turn connected to an NFC module 40 and a microcontroller 55.
  • the microcontroller 55 contains a drive and evaluation circuit for the sensor electrode 20 and a drive and evaluation circuit for a further sensor electrode 73.
  • a terminal 71 of the sensor electrode 73 is connected to the microcontroller 55.
  • the coupling circuit 30 couples the terminals 21 and 22 of the sensor electrode 20 formed as an NFC antenna coil to either the NFC package 40 or to the one in the NFC package 40
  • Microcontroller 55 contained control and evaluation.
  • Sensor electrode 73 of the second capacitive proximity sensor in Longitudinally spaced from the formed as NFC antenna coil sensor electrode 20 arranged to reduce mutual interference.
  • the components like the
  • Microcontroller 55, the NFC device 40 and the coupling circuit 30 are on the circuit board 10 between the two electrodes
  • the components 55, 40, 30 and the electrodes 20 and 73 formed in the printed circuit board metallization layer appear on a circuit board side.
  • PCB side be mounted.
  • the circuit board may be two or more
  • Have metallization levels and the sensor electrode 20 and the sensor electrode 73 may be formed in different planes or on different sides of the circuit board 10.
  • the sensor electrode 73 and optionally further sensor electrodes are formed as separate components (metal plates or foils or metallization layers of further printed circuit boards) and are arranged at a distance from the printed circuit board 10.
  • FIG. 2 shows the components placed on the printed circuit board 10 according to FIG. 1 in a block diagram.
  • the coupling circuit 30 comprises a plurality of switching elements 31a, 31b and 31c, for example semiconductor switching devices, such as MOS or bipolar switching transistors or the like.
  • semiconductor switching devices such as MOS or bipolar switching transistors or the like.
  • Terminal 22 designed as NFC antenna coil
  • Terminals 21 and 22 separated from the NFC device 40.
  • Coupling circuit 30, the NFC module 40 and the drive and Evaluation circuit 60 are connected to ports 51 of a microcontroller 50.
  • Proximity sensor is also connected to an associated control and evaluation electronics 70, which in turn is also coupled to the microcontroller 50.
  • the microcontroller 50 controls the drive and
  • the NFC antenna coil 20 is connected via the switching devices 31b and 31c with the NFC module 40.
  • the sensor electrode 20 acts as an NFC antenna coil of the NFC module 40.
  • the sensor electrode 20 designed as an NFC antenna coil is characterized by
  • the NFC device 40 is disconnected from the terminals 21 and 22 by means of the switching devices 31b and 31c.
  • the switching devices may be, for example, analog switches that affect capacitance measurement and NFC communication only to a small, tolerable extent.
  • the analog switch has a low internal resistance and low parasitic capacitances.
  • Microcontroller 50 may include drive and evaluation circuits 60 and / or 70 in a preferred embodiment of this embodiment.
  • FIG. 3 shows an alternative embodiment of the invention
  • microcontroller 50 is again via ports 51 with the first Control and evaluation circuit 60, the second control and evaluation circuit 70, the NFC module 40 and a
  • Coupling circuit 35 connected. The second drive and
  • Evaluation circuit 70 forms with the sensor electrode 73, the second capacitive proximity sensor.
  • the NFC module 40 is in turn connected via the coupling circuit 35, which comprises two switching elements 36b, 36c, to terminals 21 and 22 of the sensor electrode 20 designed as an NFC antenna coil.
  • terminal 22 of the NFC antenna coil 20 is permanently connected to the first drive and evaluation circuit 60. The number of required switching elements 31 is thus lower than in the embodiment of the invention shown in FIG.
  • the mode of operation substantially corresponds to that of the embodiment shown in FIG.
  • the sensor electrode 20 designed as an NFC antenna coil is not separated from the drive and evaluation circuit 60.
  • the NFC communication is not or not significantly disturbed by the drive and evaluation circuit 60.
  • Capacitance measurement is performed. The driving and
  • Evaluation circuit 60 can be part of the microcontroller 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L'invention concerne une poignée de porte extérieure pour un véhicule comprenant au moins un capteur de proximité capacitif avec au moins une électrode de détection (20), un circuit d'amorçage et d'analyse (60), et un circuit de commande (50). La poignée de porte extérieure comprend au moins un module NFC (40) qui peut être couplé à une bobine d'antenne NFC (20). Une électrode de détection (20) est réalisée sous la forme d'une bobine d'antenne NFC. Les connexions (21, 22) de la bobine d'antenne NFC (20) peuvent être couplées au module NFC (40) au moyen d'un circuit de couplage (30). Le circuit de couplage (30), le circuit d'amorçage et d'analyse (60) et le module NFC (40) sont couplés au circuit de commande (50 ; 55). Le circuit de commande (50) commande le circuit de couplage (30) de sorte que les connexions (21, 22) de la bobine d'antenne NFC (20) puissent, en fonction d'un état de marche du circuit de commande (50), être reliées de façon sélective au module NFC (40) ou séparées du module NFC (40) de façon à ce que la bobine d'antenne NFC (20) agisse comme électrode de détection (60) du capteur de proximité capacitif.
PCT/EP2014/054825 2013-03-18 2014-03-12 Dispositif de poignée de porte pour véhicule avec capteur de proximité capacitif et unité d'émission/réception nfc WO2014146949A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013102701.6 2013-03-18
DE102013102701.6A DE102013102701A1 (de) 2013-03-18 2013-03-18 Türgriffanordnung für ein Kraftfahrzeug mit kapazitivem Näherungssensor und NFC-Sende-/Empfangseinheit

Publications (1)

Publication Number Publication Date
WO2014146949A1 true WO2014146949A1 (fr) 2014-09-25

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Country Status (2)

Country Link
DE (1) DE102013102701A1 (fr)
WO (1) WO2014146949A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016037957A1 (fr) * 2014-09-11 2016-03-17 Continental Automotive Gmbh Dispositif et procédé de détection de l'approche d'un objet
WO2018177580A1 (fr) 2017-03-30 2018-10-04 Huf Hülsbeck & Fürst Gmbh & Co. Kg Ensemble de poignée de porte pour véhicule automobile muni d'un capteur capacitif et d'un système de communication en champ proche
WO2018205898A1 (fr) * 2017-05-12 2018-11-15 中兴通讯股份有限公司 Circuit d'antenne, module de couplage configuré pour une commutation d'antenne, et dispositif de communication sans fil
US10647290B2 (en) 2017-04-25 2020-05-12 Continental Automotive France Method for activating a vehicle function from a portable access device and associated activation module
EP4072017A1 (fr) 2021-04-09 2022-10-12 Marquardt GmbH Dispositif détecteur pour un véhicule automobile
EP4072016A1 (fr) 2021-04-09 2022-10-12 Marquardt GmbH Dispositif détecteur pour un véhicule automobile
EP4072018A1 (fr) 2021-04-09 2022-10-12 Marquardt GmbH Dispositif détecteur pour un véhicule automobile
DE102021126043A1 (de) 2021-10-07 2023-04-13 Minebea Mitsumi Inc. Sensorvorrichtung eines türgriffs für ein kraftfahrzeug
US12073279B2 (en) 2020-07-31 2024-08-27 Continental Automotive Technologies GmbH Access system

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DE102014113832A1 (de) * 2014-09-24 2016-03-24 Huf Hülsbeck & Fürst Gmbh & Co. Kg Daten- und Messerfassungsvorrichtung für einen Türgriff sowie Verfahren dazu
US10290165B2 (en) 2015-09-30 2019-05-14 Dura Operating, Llc Vehicle entry device, and vehicle trim component equipped with such device
DE102015122490B4 (de) * 2015-12-22 2017-11-16 Huf Hülsbeck & Fürst Gmbh & Co. Kg Verfahren zum Initialisieren einer Zugangsberechtigung für ein Kraftfahrzeug
DE102016124037A1 (de) * 2016-12-12 2018-06-14 Huf Hülsbeck & Fürst Gmbh & Co. Kg Türgriff
AT520415A1 (de) * 2017-07-20 2019-03-15 Ait Austrian Inst Tech Gmbh NFC-Transponderanordnung
DE102018104924B4 (de) * 2018-03-05 2020-08-27 Qundis Gmbh Vorrichtung mit einer Funkkommunikationseinheit und einer Schalteinheit
FR3081903B1 (fr) * 2018-05-31 2020-10-16 Continental Automotive France Poignee de portiere de vehicule equipee d'une antenne ultra haute frequence
DE102018122254B3 (de) 2018-09-12 2019-12-12 Ifm Electronic Gmbh Kapazitiver Türgriffsensor mit einer Antenne zur Nahfeldkommunikation
DE102018125176B4 (de) * 2018-10-11 2020-12-10 Ifm Electronic Gmbh Türgriffmodul mit einem NFC-Initiator
DE102018125922A1 (de) 2018-10-18 2020-04-23 Huf Hülsbeck & Fürst Gmbh & Co. Kg Fahrzeugtürgriff mit Nahfeld-Kommunikationselektronik
DE102018130789A1 (de) * 2018-12-04 2020-06-04 Huf Hülsbeck & Fürst Gmbh & Co. Kg Fahrzeugtürgriff mit Sensoreinrichtung und drahtloser Kommunikationseinrichtung
WO2020201786A1 (fr) * 2019-04-02 2020-10-08 Marquardt Gmbh Unité de capteur pour système de verrouillage de voiture

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WO2013137892A1 (fr) * 2012-03-15 2013-09-19 Intel Corporation Communication par champ proche (nfc) et capteur de proximité pour dispositifs portables

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EP1795860A1 (fr) * 2004-09-28 2007-06-13 Aisin Seiki Kabushiki Kaisha Ensemble d'antenne et unité de poignée de porte
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016037957A1 (fr) * 2014-09-11 2016-03-17 Continental Automotive Gmbh Dispositif et procédé de détection de l'approche d'un objet
WO2018177580A1 (fr) 2017-03-30 2018-10-04 Huf Hülsbeck & Fürst Gmbh & Co. Kg Ensemble de poignée de porte pour véhicule automobile muni d'un capteur capacitif et d'un système de communication en champ proche
DE102018103047A1 (de) 2017-03-30 2018-10-04 Huf Hülsbeck & Fürst Gmbh & Co. Kg Türgriffanordnung für ein Kraftfahrzeug mit kapazitivem Sensor und Nahfeldkommunikation
US11269108B2 (en) 2017-03-30 2022-03-08 Huf Hülsbeck & Fürst Gmbh & Co. Kg Door handle assembly for a motor vehicle having a capacitive sensor and near-field communication
US10647290B2 (en) 2017-04-25 2020-05-12 Continental Automotive France Method for activating a vehicle function from a portable access device and associated activation module
WO2018205898A1 (fr) * 2017-05-12 2018-11-15 中兴通讯股份有限公司 Circuit d'antenne, module de couplage configuré pour une commutation d'antenne, et dispositif de communication sans fil
US12073279B2 (en) 2020-07-31 2024-08-27 Continental Automotive Technologies GmbH Access system
EP4072017A1 (fr) 2021-04-09 2022-10-12 Marquardt GmbH Dispositif détecteur pour un véhicule automobile
EP4072018A1 (fr) 2021-04-09 2022-10-12 Marquardt GmbH Dispositif détecteur pour un véhicule automobile
DE102021108849A1 (de) 2021-04-09 2022-10-13 Marquardt Gmbh Sensoreinrichtung für ein Kraftfahrzeug
DE102021108851A1 (de) 2021-04-09 2022-10-13 Marquardt Gmbh Sensoreinrichtung für ein Kraftfahrzeug
DE102021108852A1 (de) 2021-04-09 2022-10-13 Marquardt Gmbh Sensoreinrichtung für ein Kraftfahrzeug
EP4072016A1 (fr) 2021-04-09 2022-10-12 Marquardt GmbH Dispositif détecteur pour un véhicule automobile
DE102021126043A1 (de) 2021-10-07 2023-04-13 Minebea Mitsumi Inc. Sensorvorrichtung eines türgriffs für ein kraftfahrzeug

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