• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The subject of the present invention is an activation module (A) intended to be loaded into a motor vehicle (V) in order to activate a function of the vehicle from a portable access device (D) equipping a user. , the module comprising: • a single coil (B), • first control means (M1) of a user's hand support detection device (M), • second control means (M2) , M2 ') of a near-field communication device, • selection means (S) connected to the single coil having two positions: - a first position (P1) in which the selection means connect said single coil to the first control means for constituting the support detection device; a second position (P2) in which the selection means connect said single coil to the second control means in order to constitute the near-field communication device; target (C) present a recess (Z), located opposite the single coil, impedance adjustment means (M3) connected to the target, control means (M4) of the selection means.
    公开号:FR3065418A1
    申请号:FR1753581
    申请日:2017-04-25
    公开日:2018-10-26
    发明作者:Gabriel SPICK；Yannis Escalante；Vincent Marimoutou
    申请人:Continental Automotive GmbH；Continental Automotive France SAS；
    IPC主号:
    专利说明:

    Holder (s): CONTINENTAL AUTOMOTIVE FRANCE Simplified joint-stock company, CONTINENTAL AUTOMOTIVE GMBH.
    Extension request (s)
    Agent (s): CONTINENTAL AUTOMOTIVE FRANCE Simplified joint-stock company.
    METHOD FOR ACTIVATION OF A VEHICLE FUNCTION FROM A PORTABLE ACCESS DEVICE D AND ASSOCIATED ACTIVATION MODULE.
    FR 3 065 418 - A1 f5 / j The present invention relates to an activation module (A), intended to be installed in a motor vehicle (V) in order to activate a function of the vehicle from a device d portable access (D) equipping a user, the module comprising:
    a single coil (B), first control means (M1) of a hand support detection device (M) of the user, second control means (M2, M2j of a communication device in the near field, selection means (S) connected to the single coil having two positions:
    a first position (P1) in which the selection means connect said single coil to the first control means in order to constitute the support detection device,
    a second position (P2) in which the selection means connect said single coil to the second control means, in order to constitute the near-field communication device, a target (C) having a recess (Z), located opposite with respect to the single coil, adjustment means (M3) of impedance connected to the target, control means (M4) of the selection means.

    The present invention relates to the automotive field and relates more particularly to a method of activating a function of a motor vehicle. The invention applies in particular to the locking and unlocking function of the doors of a motor vehicle.
    In a motor vehicle, it is known to use presence detection devices in order to detect the presence of a hand or a foot of a user of the vehicle and thus allow the locking or unlocking of all or part of the opening the vehicle, for example the doors or the trunk. For example, the detection of the presence of a user's hand on or in front of a door handle coupled with the recognition of an identifier of a “hands-free” access device worn by this user , allows the locking and unlocking of these openings.
    To do this, when the user approaches the vehicle, a communication is established on a wireless communication link between the access device, for example an electronic badge or a mobile phone, and the detection device in order to authenticate said access device thanks to its identifier.
    To this end, the detection device includes an antenna enabling reception of the identifier sent by the access device. The detection device is connected to an electronic computer of the vehicle (ECU: abbreviation for "Electronic Control Unit") to which it transmits the identifier.
    Depending on the state of the art, the access device is generally an electronic badge. The signal received by the antenna of the detection device, including the identifier of the access device, is transmitted via RF (Radiofrequency) or LF ("Low Frequency") waves.
    Nowadays, however, it is more and more common to use a mobile phone to perform authentication functions, which makes it possible to avoid using a dedicated electronic badge and thus limit the number of devices. Most mobile phones do not have RF or LF communication means, it is known to use the near field communication module, called NFC "Near Field Communication" in English equipping most existing phones to send the device identifier in the case of a vehicle unlocking function.
    The approach of the access device near the detection device (less than 10 cm) and the recognition of the identifier received by the computer coupled with the detection of the presence of the user's hand, allows locking or unlocking the door.
    In order to detect the presence of the hand of the user and to allow the unlocking of the doors of the vehicle, such a detection device comprises in a known manner a capacitive sensor. Generally, a capacitive sensor is dedicated to a detection zone, and according to the prior art, there is a capacitive sensor for the unlocking zone and a capacitive sensor for the locking zone, the two zones being distinct.
    According to an example of capacitive measurement, such a capacitive sensor comprises a first capacity charged and discharged periodically in a second capacity. When discharging the first capacity into the second capacity, the charges balance between the two capacities.
    When a hand is present on the handle or near the handle, for example within 10 mm, the charge level of the first capacity increases. This results in a greater discharge of the first capacity in the second capacity and therefore a higher level of balancing in the presence than in the absence of a hand on the handle. Such a sensor thus makes it possible to detect the intention of a user to unlock the doors of the vehicle.
    However, the use of capacitive sensors has many disadvantages.
    In this case, the detection of a user's approach by capacitive sensors is not robust and generates false detections.
    In particular, under certain environmental conditions, when the ambient air is humid, or when there is salt on the roads, which is projected onto the metal body of the vehicle, a capacitive coupling is created between the detection zones. and the metal parts of the vehicle, which prevents any detection of the presence of a user by the capacitive sensors.
    In addition, raindrops or snowflakes on the door handle increase the value of the capacity measured by the capacitive sensors, thereby triggering false detections.
    And finally, detection by capacitive sensors is incompatible with handles covered with metallic paints or comprising chrome surfaces, the presence of metal in the handle creating a coupling with the detection zones and inhibiting the detection of the presence of a user.
    If for certain vehicles, false detections are not desired, for other vehicles, false detections are not tolerated.
    This is the case of vehicles fitted with folding handles, that is to say the case of handles for which the detection of the presence of the user controls the movement of a motorized handle, which when it is at rest is fully integrated in the door and when activated deploys and protrudes outside the door. For this type of handle, the unwanted deployment or retraction of the handle due to false detection by the capacitive sensors may strike or pinch the user's hand.
    This is also the case for vehicles equipped with an opening by electric assistance, for which the unlocking detection is accompanied not only by unlocking the door but also by its opening. In this case, false detections cause untimely door openings.
    And finally, false detections are not tolerable for vehicles equipped with the “Safe Lock” security function, for which the lock detection controls not only the locking of the vehicle from the outside but also the locking of the vehicle from the outside. 'interior (anti-theft device). In this case, false detections can cause the user to be locked inside the vehicle.
    To overcome these drawbacks, it is known in the prior art to replace at least one of the capacitive sensors, for example the capacitive sensor dedicated to locking the vehicle, by a support detection sensor, for example an inductive sensor comprising a metal target that moves to a sensor coil when the user presses the locking or unlocking area. The variation in inductance of the coil of the inductive sensor, linked to the approach of the target towards the coil, makes it possible to validate the detection of locking or unlocking intention of the user.
    However, the integration of an NFC communication device and an inductive support detection sensor in the same vehicle door handle has several drawbacks. The first drawback lies in the positioning of the two devices: the coil of the inductive sensor and the coil of the NFC sensor must not be located opposite each other because they disturb each other. Indeed, any metal part located near the NFC antenna, for example the target or the coil of the inductive sensor absorbs part of the electromagnetic field emitted by said NFC antenna and impacts detection and communication with the portable device. It is therefore not possible to stack the two devices in the handle, and they must therefore be located next to each other. However, the space in the handles becoming more and more restricted (for the sake of the aesthetics of the handle), the mechanical integration of the components one next to the other is not always possible for lack of square.
    The invention provides a method for activating a function of a vehicle, in this case unlocking and / or locking a vehicle door, making it possible to remedy the drawbacks of the prior art. More particularly, the invention provides a communication device by NFC and a support detection device using an inductive sensor allowing proximity between the two devices and having a gain in space compared to the prior art.
    The invention provides an activation module, intended to be installed in a motor vehicle in order to activate a vehicle function from a portable access device fitted to a user, the activation module comprising:
    • a single coil, • first means for controlling a device for detecting support by the hand of the user, • second means for controlling a near field communication device having a communication frequency capable of communicate with the portable access device, • selection means connected to the single coil having two positions:
    • a first position in which the selection means connect said single coil to the first control means and disconnect the single coil from the second control means, in order to constitute the support detection device, • a second position in which the means of selection connect said single coil to the second control means, and disconnect the single coil from the first control means, in order to constitute the near-field communication device, • a target having a recess, located opposite the coil single, able to move relative to the single coil • impedance adjustment means connected to the target, • means for controlling the selection means.
    Judiciously, the means of adjustment are adapted to:
    • adjust the impedance below a minimum threshold when the selection means are in the first position and, • adjust the impedance above a maximum threshold, when the selection means are in the second position.
    The first control means comprise means for oscillating the single coil at a resonant frequency, means for measuring an actual frequency of oscillation of said single coil and means for comparing between said real frequency and a first threshold predetermined.
    The second control means comprise impedance adjustment means, means for measuring the voltage across the terminals of the single coil, means for comparing said voltage with a second threshold value and means for transmitting / receiving data. by near field communication.
    Advantageously, the target is in the form of an open ring, and the single coil is of rectangular shape.
    The target is made of non-magnetic and conductive material, preferably, the dimensions of the recess are at least substantially equal to the dimensions of the single coil.
    The invention also relates to a method for activating a function of a vehicle from a portable access device fitted to a user, said vehicle comprising at least one activation module, according to any one of the characteristics. listed above, including:
    • the positioning of the selection means on the first position in order to detect the support of the user's hand, and • the positioning of the selection means on the second position in order to authenticate the portable access device by communication in near field, a valid identification of the portable access device and the detection of the hand support triggering the activation of the vehicle function.
    According to the invention, when the selection means are in the second position, the near-field communication is preceded by an approach detection phase of the portable access device.
    And when the selection means are in the first position, the detection of hand support is determined by an increase in the resonance frequency of the single coil.
    The invention also applies to any folding door handle comprising two parts, a first movable part capable of deploying and a second fixed part included in the door, comprising an activation module according to any of the characteristics listed below. below.
    The invention applies more generally to any door handle, comprising an activation module according to any of the characteristics listed below.
    Other objects, characteristics and advantages of the invention will appear on reading the description which follows by way of nonlimiting example and on examining the appended drawings in which:
    - Figure 1 shows a schematic view of an activation module A according to the invention.
    FIG. 2 is a graph illustrating the impedance value of the target according to the invention at two predetermined frequencies, at a resonance frequency F R for the detection of support and at a communication frequency Fnfc for communication in the field close with portable access device D,
    - Figure 3 shows a schematic view of the activation module A integrated in the door handle 100 P, and illustrates in Figure 3a the position of the target C at rest, that is to say when the hand M of the user does not press on the handle 100, then illustrates in FIG. 3b, the displacement of the target C relative to the reel B when the hand M of the user is pressed on the handle 100 by l 'user,
    FIG. 4 represents a schematic view of another embodiment of the activation module A ’, more precisely when it is integrated in a folding handle 100’,
    - Figure 5 is a flow diagram representing the steps of the method of activating a vehicle function according to the invention.
    The activation module A according to the invention is illustrated in FIG. 1. The activation module A is intended to be installed in a motor vehicle. More particularly, the activation module A is integrated in a handle 100 of the door P of the motor vehicle V (cf. FIG. 3) and allows the activation of a function of the vehicle, for example the locking and unlocking of the opening elements of the vehicle V. For this purpose, the activation module A comprises a device for detecting support from the hand of the user and a near field communication device, called NFC communication or “Near Field communication” in English so to communicate with the portable access device D (badge, telephone, etc.) worn by the user. Of course, this example is in no way limiting, and the invention also applies to any communication by coupling, for example by radio identification, or RFID, "Radio Frequency Identification" in English, of frequency around 13.56 MHz.
    Valid authentication of the portable access device D located near the handle 100, by near-field communication, and the detection of the support of the user's hand M on the handle 100 which follows ( or which is performed simultaneously), trigger the activation of a vehicle function, in this case for example unlocking the door P.
    The hand support detection device comprises an inductive sensor comprising a coil B and a target C located opposite one another, as well as first control means M1 of said sensor. The target C is able to move towards the coil B upon contact of the user's hand on the handle 100.
    The first control means M1 adjust the frequency F B of the coil B to a predetermined resonant frequency F R , for example 5 MHz and energize the coil B at said resonant frequency Fr. The first control means M1 measure in return the actual excitation frequency F B of the coil B which is a function of the displacement of the target C towards the coil B. If the actual excitation frequency F B of the coil B exceeds the resonant frequency F R and more precisely if the value of the actual excitation frequency F B exceeds a first threshold value Fs, then there is valid detection of the support of the user's hand on the handle 100. The first control means M1 comprise in a known manner in itself a capacitor, a frequency oscillator, as well as means for measuring the frequency of the coil B. This is known to a person skilled in the art and will not be described in more detail here.
    The near field communication device comprises a near field communication antenna, as well as second control means M2, M2 ’of the communication device.
    The second control means M2, M2 ′ consist of means of adaptation M2 of the impedance of the antenna to the communication frequency Fnfc in the near field, that is to say at 13.56 MHz, then in means for detecting the approach of a compatible portable access device D and means for transmitting / receiving data M2 'in the near field.
    The approach detection means of a portable access device D consist for example of means for measuring a voltage at the terminals of the antenna or a phase shift of the current at the terminals of the antenna.
    A variation of said voltage above or below a threshold signifies the approach of a compatible portable access device D with which near-field communication is desired.
    This is known to those skilled in the art and will not be further detailed here.
    The first control means M1 and the second control means M2, M2 'can be included in a microcontroller 10 integrated in a printed circuit 20. However, in the example illustrated in FIG. 1, said means M1, M2, M2' are components external to the microcontroller 10.
    However, unlike the prior art where the two devices were independent and preferably located one next to the other to avoid interference, the invention here proposes a detection module A in which the device for detecting support and the communication device are not only located opposite but also share common components, in this case the coil B.
    More particularly, and according to the invention, the activation module A comprises a single coil B (cf. FIG. 1) adapted to alternately constitute either the coil B of the inductive sensor of the support detection device, or the antenna of near field communication from the near field communication device.
    According to the invention and for this purpose, said single coil B is connected to selection means S, for example to a switch S.
    The selection means S have two positions; a first position P1, and a second position P2:
    • a first position P1 in which the single coil B is electrically connected to the first control means M1 of the support detection device and is disconnected from the second communication control means M2, M2 'in the near field, • a second position P2 wherein the single coil B is electrically connected to the second communication control means M2, M2 'in the near field and is disconnected from the first control means M1 of the support detection device.
    The single coil B consists of a winding of copper wire, for example printed on a printed circuit 20 (cf. FIGS. 3a and 3b), and is for example of rectangular or circular shape. Of course, the invention applies to any form of single coil B.
    The selection means S are controlled for example by control means M4 of a microcontroller 10 integrated in a printed circuit 20, itself located in the handle 100.
    The control means of the selection means M4 are for example software means.
    According to the invention, the activation module A also includes a target C, located opposite the single coil B and able to move relative to the single coil B.
    According to the invention the target C is located nearby and is integral with an outer surface S1 of the handle 100, on which the hand M of the user comes to press in order to unlock for example the door P of his vehicle.
    The term "integral" means that any pressing on the outer surface S1 of the handle 100 causing local deformation of said handle 100, causes the target C to move towards the single coil B.
    The deformation of the handle 100 created by the support of the user on the external surface S1 generates the displacement of the target C towards the single coil B.
    This is illustrated in Figures 3a and 3b. In FIG. 3a, the handle 100 is at rest and a distance d1 separates the target C, itself at rest, from the single coil B.
    In FIG. 3b, the user's hand M presses on the external surface S1, creating a local deformation of the external surface S1 of the handle 100 and the displacement of the target C towards the single coil B, and shortening the distance d1 between target C and single coil B at a new distance d2. Bringing the target C towards the single coil B generates an increase in the actual excitation frequency
    F b of the single coil B, measured by the first control means M1, which allows the detection of hand support M, this is detailed below.
    Said target C is a “hollow” target, that is to say having a recess Z (cf. FIG. 1) of material at its center.
    The target C is for example of rectangular, ovoid or round shape, and is in the form of an open rigid loop or of a ring having an interior contour, delimiting the recess Z and an exterior contour. Said target C is preferably but not limited to in a plane parallel to the plane defined by the single coil B.
    Said target C consists of a non-magnetic conductive material, for example aluminum.
    The dimensions of the target C are preferably substantially equal to the dimensions of the single coil B. More precisely, in the case where the target C is of round shape, and the single coil B of rectangular shape, as illustrated in FIG. 1 , the diameter D1 of the internal contour of the target C (or the diameter D1 of the recess Z) is preferably but not exclusively greater or at least equal to the length 11 of the coil B, so that this recess Z allows the passage of electromagnetic waves emitted by the single coil B, when said single coil B communicates with the portable access device D in the near field, this is detailed below.
    Preferably, the single coil B and the target C are centered with respect to each other and each have a symmetrical shape along at least one of two perpendicular axes crossing at their respective centers.
    Target C is connected at its ends to M3 impedance adjustment means.
    The adjustment means M3 for example consist of a “LC” circuit, that is to say a circuit comprising a coil and a capacitor connected in series, so as to produce a circuit resonant at a resonant frequency Fr, that is to say a circuit whose impedance Z is minimum at the resonance frequency F R. The adjustment means M3 are adapted so that the impedance Z of the circuit constituted by the adjustment means M3 and by the target C is:
    • -minimal or more precisely below a threshold Zmin, for example 10 Ω (cf. FIG. 2) at the resonance frequency Fr of the single coil B, • -maximal or more precisely above a threshold Zmax, for example 500 Ω (see Figure 2) at the communication frequency Fnfc in the near field.
    Thus at the resonant frequency Fr, the impedance of the circuit being low, the electromagnetic waves emitted by the coil B create a current in the target C, and the approach of the target C towards the coil B modifies the real frequency of oscillation of coil F B.
    And at the near field communication frequency Fncf, the impedance of the circuit being high, the electromagnetic waves emitted by the single coil B do not create current in the target C and are not absorbed by the target C, they can therefore "Cross" target C at its recess Z.
    The adjustment means M3 and the single coil B are preferably located on the same printed circuit, for example on the printed circuit 20, the target C is itself integral and located near the outer surface S1 of the handle 100. Said target C is therefore when the handle 100 is at rest at a distance d1 from the adjustment means M3 and from the printed circuit 20. The target C is connected to said adjustment means M3 by a conductive link 40, in a flexible manner for example in the form of a connection tab 40 (cf. FIGS. 3a and 3b), in order to be able to move relative to the single coil B. The connection tab 40 is adapted to bend when the user's hand M presses on the outer surface S1.
    When the selection means S are in the first position P1, then the target C and the single coil B form an inductive sensor capable of detecting the support of the user's hand M on the handle 100.
    However and judiciously according to the invention the single coil B is also connected when the selection means S are in the second position P2 allowing the transmission and reception of data by near field communication, by means of said single coil B In this second position P2, the single coil B then constitutes a near field communication antenna.
    The recess Z in the center of the target C allows in this second position P2 the passage of the electromagnetic waves emitted by the single coil B and ensures effective near-field communication with the portable access device D.
    Indeed, if the target C had been full, it would have disturbed the electromagnetic waves emitted at the communication frequency Fnfc in the near field. Part of the electromagnetic waves would have been absorbed by the target C by creating eddy currents and another part would have been reflected towards the single coil B with an opposite phase.
    Judiciously, the invention proposes a particular form of target C which does not prevent near field communication between the single coil B and the portable access device D when the selection means S are in the second position P2 and the single coil B works as a communication antenna. In addition, the circuit consisting of the adjustment means M3 and the target C has, at said communication frequency Fnfc, an adapted impedance Z (that is to say very high, as explained above) in order to contribute to the passage electromagnetic waves through the recess Z of the target C
    The selection means S therefore allow:
    • when they are in the first position P1: adjust the frequency of the single coil F B to the resonance frequency F R (5 MHz for example) and thus activate the support detection device, • when are in the second position P2 to adjust the impedance of the single coil F B and to connect said single coil B to the data transmission / reception circuit at the near field communication frequency Fnfc (13.56 MHz) and d '' thus activate the near field communication device.
    Judiciously, target C is adapted:
    When the selection means S are in the first position P1: to act as the target C of the inductive sensor, the value of the impedance Z of the circuit consisting of the target C and of the adjustment means M3 being low, when the selection means S are in second position P2: to let the electromagnetic waves emitted by the single coil B pass through its recess Z to the portable access device D when the latter transmits at the communication frequency in the field close to the value of the impedance Z of the circuit consisting of the target C and the adjustment means M3 being high.
    Another embodiment of the activation module A according to the invention is illustrated in Figure 4. In Figure 4 is illustrated a folding handle 100 'which is in a rest position and integrated in the door P', in such a way that the handle 100 'does not protrude relative to the surface of the door P' and in an active position is found deployed by means of a motorized mechanism and articulated arms, and protrudes outside the door P 'so that the user's hand M can grasp it.
    In this embodiment, a movable part 300 of the handle 100 'comprises the single coil B' and the target C 'and a fixed part 400 integrated in the door P' comprises the selection means S ', the control means M4 'selection means, the first control means ΜΓ, the second control means M2 ”, M2'”, the frequency adjustment means M3 'as well as a microcontroller 10'.
    The movable part 300 of the handle 100 ’is connected for example to the fixed part 400 by a flexible coaxial cable 30.
    The invention also provides a first embodiment of the method for activating a vehicle function, illustrated in FIG. 5 and described below.
    During a first step (E1), the selection means S are in the second position P2 and the single coil B constitutes the near-field communication antenna, ie F b = Fnfc (step E2).
    If the voltage across the terminals of the single coil B passes above or below a predetermined threshold, if V N fc> V s then there is detection of the presence of a compatible portable access device D, and a near field communication is triggered (step E4), otherwise the process returns to step E1. This detection can also be carried out by detecting a phase shift across the terminals of the single coil B. This is known to a person skilled in the art.
    An exchange of identifier ensues (step E5) between the activation module A and the portable access device D, if the portable access device D is authenticated then the selection means S switch to the first position P1 (step E6).
    The oscillation frequency of the single coil B is then equal to the resonant frequency F B = F R.
    If the actual measured oscillation frequency F B of the single coil B becomes greater than the resonance frequency F R (step E8) and more particularly if the actual oscillation frequency of the single coil F B becomes greater than a second threshold predetermined Fs, then there is detection of approach of the hand M of the user on the handle and validation of the intention to unlock the vehicle (step E10).
    Otherwise, if the actual oscillation frequency of the single coil F B remains below a second predetermined threshold F s for a duration At greater than a predetermined duration Ats, then there is no detection of hand approach M of the user on the handle 100, the intention to unlock the vehicle is not validated and the method returns to step E1.
    In a second embodiment of the activation process, steps E1 to E5 are carried out after steps E6 to E9. In this second embodiment, the selection means S are first in the first position P1 in order to detect the support of the user's hand M on the handle 100, then once the support detection has been carried out, the selection means S switch to the second position P2 in order to trigger the presence detection, then a communication and an exchange of identifier with the portable access device D.
    Finally, in a third embodiment of the activation method according to the invention, the selection means S alternate positions at fixed frequency between the first position P1 and the second position P2. In other words, the activation module A operates alternately as a support detection device and a communication device.
    Any detection valid in one of the two positions of the selection means S, either support detection (in the first position P1), or near field approach detection (in the second position P2) triggers the tilting of the means of selection S in the other of the two positions, respectively in the second position P2 in order to detect an approach of a portable access device D, or respectively in the first position P1, in order to detect the support of the hand of the user on the handle 100.
    Authentication of the portable access device D as well as detection of the contact of the hand on the handle, which follows or precedes the authentication, triggers the activation of a vehicle function.
    The invention resides in the use of a coil simultaneously playing the role of a coil of the inductive sensor and the role of near-field communication antenna by the addition of a selection means and by the specific modification of the target of the inductive sensor located opposite the coil, so as not to disturb communication in the near field.
    The invention therefore makes it judicious to integrate into a vehicle door handle a support detection device, using an inductive sensor as well as a near field communication device while avoiding interference between the two devices and having a significant gain in space compared to the prior art.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1. Activation module (A), intended to be installed in a motor vehicle (V) in order to activate a vehicle function from a portable access device (D) fitted to a user, the module activation (A) being characterized in that comprend comprises:
    • a single coil (B), • first control means (M1) of a hand support detection device (M) of the user, • second control means (M2, M2 ') d 'a near field communication device having a communication frequency (Fnfc) capable of communicating with the portable access device (D), • selection means (S) connected to the single coil (B) having two positions:
    - a first position (P1) in which the selection means (S) connect said single coil (B) to the first control means (M1) and disconnect the single coil (B) from the second control means (M2, M2 ') , in order to constitute the support detection device,
    - a second position (P2) in which the selection means (S) connect said single coil (B) to the second control means (M2, M2 '), and disconnect the single coil (B) from the first control means (M1 ), in order to constitute the near-field communication device, • a target (C) having a recess (Z), located opposite the single coil (B), able to move relative to the coil single (B), • adjustment means (M3) of impedance connected to the target (C), • control means (M4) selection means (S).
    [2" id="c-fr-0002]
    2. Activation module (A) according to the preceding claim, characterized in that the adjustment means (M3) are suitable for:
    • adjust the impedance below a minimum threshold (Zmin) when the selection means (S) are in the first position (P1) and, • adjust the impedance above a maximum threshold (Zmax), when the selection means (S) are in the second position (P2).
    [3" id="c-fr-0003]
    3. Activation module (A) according to any one of claims 1 or 2 characterized in that the first control means (M1) comprise means for oscillating the single coil (B) at a resonant frequency (Fr), means for measuring an actual frequency of oscillation (F B ) of said single coil (B) and means for comparing between said actual frequency (F B ) and a first predetermined threshold (F s ).
    [4" id="c-fr-0004]
    4. Activation module (A) according to any one of claims 1 to 3, characterized in that the second control means (M2, M2j comprise means for adjusting impedance, means for measuring the voltage (V B ) at the terminals of the single coil (B), means for comparing said voltage (V B ) with a second threshold value (V s ) and means for transmitting / receiving data by near-field communication.
    [5" id="c-fr-0005]
    5. Activation module (A) according to any one of the preceding claims, characterized in that the target (C) is in the form of an open ring, and the single coil (B) is of rectangular shape.
    [6" id="c-fr-0006]
    6. Activation module (A) according to any one of the preceding claims, characterized in that the target (C) is made of non-magnetic and conductive material, and in this the dimensions (D1) of the recess (Z) are at least substantially equal to the dimensions (11) of the single coil (B).
    [7" id="c-fr-0007]
    7. Method for activating a function of a vehicle from a portable access device (D) fitted to a user, said vehicle (V) comprising at least one activation module (A) according to any one of the preceding claims, the method being characterized in that it comprises:
    • the positioning of the selection means (S) on the first position (P1) in order to detect the support of the hand (M) of the user and, • the positioning of the selection means (S) on the second position ( P2) in order to authenticate the portable access device (D) by near-field communication, a valid identification of the portable access device (D) and the detection of the hand support (M) triggering the activation of the vehicle's function.
    [8" id="c-fr-0008]
    8. Activation method according to the preceding claim, characterized in that when the selection means are in the second position (P2), the near-field communication is preceded by an approach detection phase of the access device portable (D).
    [9" id="c-fr-0009]
    9. Activation method according to any one of the preceding claims, characterized in that, when the selection means (S) are on the first
    5 position (P1), the detection of hand support (M) is determined by an increase in the resonance frequency (Fr) of the single coil (B).
    [10" id="c-fr-0010]
    10. Folding handle (100 ') of door (P') comprising two parts, a first movable part (300) able to deploy and a second fixed part (400) included in the door (P '), characterized in that '' it includes a module
    Activation 10 (A) according to any one of Claims 1 to 6.
    [11" id="c-fr-0011]
    11. Door handle (100), characterized in that it comprises an activation module (A) according to any one of claims 1 to 6.
    1/5
    100
    NOT
    IN
    IN
    NFC rc (MHz)
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    同族专利:
    公开号 | 公开日
    US10647290B2|2020-05-12|
    CN110520585A|2019-11-29|
    US20200047712A1|2020-02-13|
    WO2018197771A1|2018-11-01|
    FR3065418B1|2019-04-19|
    CN110520585B|2021-04-23|
    KR20190120795A|2019-10-24|
    KR102225731B1|2021-03-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2998235A1|2012-11-19|2014-05-23|Continental Automotive France|Device for detecting hands-free access badge around car and presence of user near car door, has measurement unit measuring variation of capacity at terminals of antenna so as to represent presence of user near vehicle door|
    DE102013102701A1|2013-03-18|2014-09-18|Huf Hülsbeck & Fürst Gmbh & Co. Kg|Door handle assembly for a motor vehicle with capacitive proximity sensor and NFC transmitter / receiver unit|
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    FR3038642A1|2015-07-08|2017-01-13|Continental Automotive France|DEVICE FOR DETECTING THE INTENTION TO LOCK OR UNLOCK A VEHICLE OF A MOTOR VEHICLE BY A USER|WO2020239756A1|2019-05-28|2020-12-03|Continental Automotive Gmbh|Inductive sensor for vehicle|
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    FR3013069B1|2013-11-12|2015-12-04|Continental Automotive France|VEHICLE DOOR HANDLE COMPRISING NEAR FIELD COMMUNICATION ANTENNA|
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    DE102020121603A1|2019-09-05|2021-03-11|Huf Hülsbeck & Fürst Gmbh & Co. Kg|Actuating device with movable switching element, vehicle and actuation method|
    法律状态:
    2018-04-20| PLFP| Fee payment|Year of fee payment: 2 |
    2018-10-26| PLSC| Publication of the preliminary search report|Effective date: 20181026 |
    2019-04-18| PLFP| Fee payment|Year of fee payment: 3 |
    2020-04-20| PLFP| Fee payment|Year of fee payment: 4 |
    2021-04-16| TP| Transmission of property|Owner name: CONTINENTAL AUTOMOTIVE FRANCE, FR Effective date: 20210309 Owner name: CONTINENTAL AUTOMOTIVE GMBH, DE Effective date: 20210309 |
    2021-04-23| PLFP| Fee payment|Year of fee payment: 5 |
    2022-02-11| CA| Change of address|Effective date: 20220103 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1753581A|FR3065418B1|2017-04-25|2017-04-25|METHOD FOR ENABLING VEHICLE FUNCTION FROM A PORTABLE ACCESS DEVICE D AND ACTIVATION MODULE THEREFOR|
    FR1753581|2017-04-25|FR1753581A| FR3065418B1|2017-04-25|2017-04-25|METHOD FOR ENABLING VEHICLE FUNCTION FROM A PORTABLE ACCESS DEVICE D AND ACTIVATION MODULE THEREFOR|
    KR1020197027867A| KR102225731B1|2017-04-25|2018-04-09|Method for activating vehicle functions from a portable access device and associated activation module|
    US16/482,335| US10647290B2|2017-04-25|2018-04-09|Method for activating a vehicle function from a portable access device and associated activation module|
    CN201880027105.2A| CN110520585B|2017-04-25|2018-04-09|Method for activating a vehicle function from a portable access device and related activation module|
    PCT/FR2018/050876| WO2018197771A1|2017-04-25|2018-04-09|Method for activating a vehicle function from a portable access device and associated activation module|
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