• 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 present invention relates to a method for detecting the approach and / or contact of a hand of a user to a vehicle door handle (P), having a first outer surface (S 1) oriented towards the vehicle, and a second external surface (S2) directed towards the user, said handle comprising at least one detection electrode (ED), and an annex electrode (EA), the invention proposes that the two so-called electrodes vis-à-vis, and that the method comprises the following steps: • Step 1: electrically connect the two electrodes to the same voltage source, • Step 2: measure a first value (CED) capacity at the terminals of the detection electrode, • Step 3: a second capacitance value (CEA) is measured at the terminals of the auxiliary electrode, • Step 4: during a measurement period (A), the first value is compared and the second value between them and / or a value r predetermined threshold (T) to detect the approach and / or the contact of a hand of the user to the first outer surface or the second outer surface.
    公开号:FR3047808A1
    申请号:FR1651142
    申请日:2016-02-12
    公开日:2017-08-18
    发明作者:Mickael Guibbert；Olivier Elie；Monirat Ung
    申请人:Continental Automotive GmbH；Continental Automotive France SAS；
    IPC主号:
    专利说明:

    The invention relates to a device for detecting the presence of a user, a door handle comprising said device and a method for detecting the associated handle. More particularly, the invention applies to the presence detection devices of a user integrated in a door handle of a motor vehicle. Such devices detect the approach and / or the touch of a hand of the user to / on the handle.
    Nowadays, the vehicle door handles are equipped with devices for detecting the presence of a user. The detection of the presence of a user coupled to the recognition of an electronic badge "free hand" remote access control carried by this user, allows remote locking and unlocking of the opening of the vehicle. Thus, when the user, wearing the corresponding electronic badge and identified by the vehicle, approaches the handle or touches the door handle of his vehicle, the opening of the vehicle is automatically unlocked. By approaching or pressing a specific point on the vehicle's door handle, called the "Unlock Area", the door opens without the need to unlock it manually. Conversely, when the user, always wearing the necessary badge and identified by the vehicle, wants to lock his vehicle, he closes the door of his vehicle and he approaches or momentarily presses on another specific place of the handle, called "zone locking >>. This action automatically locks the opening of the vehicle.
    These presence detection devices generally comprise two capacitive sensors, in the form of two electrodes electrically connected to a printed circuit, integrated in the handle each in a precise zone of locking or unlocking. Generally, an electrode is dedicated to each zone, that is to say an electrode is dedicated to the detection of the approach and / or the contact of the user's hand in the locking zone and an electrode is dedicated detection of the approach and / or contact of the user's hand in the unlock zone. An electrode, when energized, emits an electric field which defines a detection zone (locking or unlocking zone). The approach of the hand of a user in this detection zone disturbs this electric field and impacts the capacity seen by said electrode. Measuring the variation of this capacitance thus makes it possible to detect the approach of the user's hand in said zone, in this case towards the handle. Once this detection is completed, it follows the sending by the capacitive sensor of an unlocking / locking instruction to the unlocking / locking system of the door.
    Since the two locking and unlocking zones are located at different places on the handle, it is necessary that the electric fields emitted by their respective electrodes do not overlap.
    More precisely, for each detection electrode, a high detection sensitivity is desired in their respective zone in order to avoid non-detection (the detection is not carried out while the hand is approaching the electrode).
    For this purpose, it is known to have a conductive element (for example a copper foil) connected to the electrical ground on the side of the electrode where the detection is not desired. This conductive element connected to ground attracts the electric field emitted by the electrode, and performs a shielding function vis-à-vis the electric field emitted by said electrode on the side where it is located. The space being restricted in a vehicle door handle, it is known to integrate the conductive element and the two electrodes, respectively on each of the two faces of the printed circuit.
    For purely explanatory purposes, only one electrode will be considered, the electrode dedicated to the unlocking zone. A device of the prior art is described with reference to FIGS. 1a, 1b. In Figure 1a, there is shown a door handle 10 of a motor vehicle (vehicle not shown) in which there is a detection device D of the presence of a user. The detection device D is supplied with voltage Vcc and grounded by an electrical connection L connected to the vehicle V.
    Said handle 10 comprises a first outer surface S1 oriented towards the door (not shown) and a second outer surface S2, opposite to the first surface and therefore oriented on the side opposite to the vehicle, specifically towards the user (not shown) . This detection device D comprises an unlocking electrode 12, one face of which is located near the first outer surface S1, a locking electrode 14 located near the second outer surface S2, control means 13 and a conductive element 11. one side of which is located near the second outer surface S2. The unlocking electrode 12, the locking electrode 14 and the conductive element 11 are connected to the control means 13. The control means 13 comprise electronic components, and measure the capacitance seen by the electrode 12 in order to detect the presence of a user. The conductive element 11 is connected to ground by the control means 13 and performs a shielding function. These control means 13 are for example a printed circuit comprising a microcontroller 20 (not shown). This detection device D defines a detection zone A (which is in the example illustrated in FIG. 1a, the unlocking zone) situated between the first external surface S1 and the vehicle door and whose dimensions are estimated in a reference formed by three perpendicular axes X, Y, Z. In the remainder of the description, we will consider only the unlocking electrode 12 dedicated to the unlocking zone A, although the invention can also be applied to the electrode dedicated to the locking zone (not shown). As illustrated in FIG. 1a, we will consider the unlocking zone A as an area between the handle 10 and the vehicle.
    This unlocking zone A is also called "sensitivity" of the detection device D. The conductive element 11, located between the second outer surface S2 and the unlocking electrode 12 thus allows detection of the approach of the hand of user only in the unlocking zone A, ie the detection towards the first outer surface S1, and prevents any approach detection on the front face of the handle P, that is to say towards the second outer surface S2.
    However, the proximity between the conductive element 11 and the electrode 12 generates a strong electromagnetic coupling between the electrode 12 and the electrical ground, which has the consequence that the detection sensitivity of said electrode 12 is reduced.
    In other words, the unlocking zone A which starts from the unlocking electrode 12 is of reduced size, and does not cover the space between the first outer surface S1 of the handle P and the surface of the door S 'located opposite (see surface S1).
    The hand of the user, if it is located closer to the surface of the door S 'than the first outer surface S1 will thus not be detected.
    It is therefore desirable to improve the detection sensitivity of the electrode 12 while ensuring the absence of false detections on the front face of the handle P. The invention therefore proposes a method of approach detection and / or one-handed user contact to a vehicle door handle, having a first exterior surface facing the vehicle, and a second exterior surface facing the user, said handle comprising at least one sensing electrode, and a ancillary electrode, said method consisting of arranging the two said electrodes in front of each other, and comprising the following steps: Step 1: electrically connecting the detection electrode and the annex electrode to the same voltage source d supply, • Step 2: measure a first capacitance value across the detection electrode, • Step 3: measure a second value of c apacity at the terminals of the auxiliary electrode, • Step 4: comparing, during a measurement period, the first value and the second value between them and / or at a predetermined threshold value in order to detect the approach and / or the contact a user's hand to the first outer surface or to the second outer surface.
    In a second embodiment of the invention, the method comprises, between step 1 and step 2, the following step: Step 1b: the voltage across the annex electrode is reduced to a value less than the supply voltage,
    And between step 2 and step 3, the following step: • Step 2b: the voltage across the detection electrode is reduced to a value lower than the supply voltage.
    Preferably, during step 1b, the auxiliary electrode is electrically connected to the electrical ground and / or in step 3b the detection electrode is electrically connected to the electrical ground.
    Conveniently, steps 1 to 3 are repeated recurrently and at a predetermined frequency, during the measurement period.
    Advantageously, for the first embodiment, if during the measurement period, the first value is greater than the second value, and the first value and the second value are greater than the predetermined threshold value, then • Step 5: the approach detection is validated otherwise • Step 6: no validation of the detection.
    And for the second embodiment, step 4 consists of: • Step 4b: if during the measurement period, the first value is greater than the predetermined threshold value and if the second value is lower than the predetermined threshold value then, • Step 5: Approach detection is validated otherwise • Step 6: No validation of the detection.
    In a particular embodiment, the detection electrode being located near the first outer surface and the auxiliary electrode being located between the second outer surface and the detection electrode, said method is remarkable in that during the In step 4, the approach detection consists of the detection towards the first outer surface. The invention also relates to a device for sensing the approach and / or contact of a user's hand towards a vehicle door handle, having a first external surface facing the vehicle, and a second exterior surface oriented towards a vehicle. the user, said device comprising at least one voltage source, a detection electrode, an auxiliary electrode, means for measuring a first capacitance value across the detection electrode and a second capacitance value at the terminals of the additional electrode, said device is remarkable in that the two said electrodes are located opposite each other, and in that it furthermore comprises: first connection means for the detection electrode to the measuring means, second means for connecting the electrode attached to the measuring means, means for controlling the first and second connection means, and Means for adjusting the voltage across the detection electrode and the voltage across the auxiliary electrode; a clock connected to the control means; means for comparing the first value and the second value between them and / or has a predetermined threshold value.
    Advantageously, the detection device further comprises means for calculating an average of the first value and means for calculating an average of the second value during a measurement period, and means for comparing the average of the second value. first value and the average of the second value between them and / or the predetermined threshold value. The invention also applies to any door handle of a motor vehicle comprising a detection device according to any one of the characteristics listed above.
    Finally, the invention relates to any motor vehicle comprising a detection device according to any one of the characteristics listed above. Other objects, features and advantages of the invention will become apparent on reading the following description given by way of nonlimiting example and on examining the appended drawings in which: FIG. 1, already explained above, represents schematically the detection device D of the prior art integrated in a handle P of a motor vehicle V, - Figure 2 shows schematically the detection device D 'according to the invention, integrated in the handle P of a motor vehicle V, - the FIG. 3 diagrammatically represents the detection device D 'of the invention; FIG. 4 shows graphically the capacitance variations of the detection electrode and of the auxiliary electrode, according to the time t, successively, during the approach of the user's hand to the first outer surface S1 (validated detection), then when approaching the user's hand towards the second me outside surface S2 (false detection), - figure 5 schematically shows the series of measuring variations of capacity of the sensing electrode and the annex electrode, according to the detection method of the invention.
    The detection device D 'of the approach and / or the contact of a hand of a user is illustrated in FIG. 2.
    Said detection device D 'comprises (see FIG. 2) a detection electrode ED, an annex electrode EA, a locking electrode 14 and control means 13', of the microcontroller type 20 and / or printed circuit connected to the two said ED, EA electrodes.
    The detection device D 'is supplied with voltage Vcc and electrically grounded via a wire connection L electrically connected to the vehicle V. In FIG. 2, the detection electrode ED is located in the handle P. near the first outer surface S1. The detection electrode ED detects the approach of a hand of a user in an unlocking detection zone A 'located between the handle and the vehicle, more particularly between the first outer surface S1 and the surface of the door S 4 of the vehicle, situated opposite the handle P. The detection electrode ED, in the example illustrated in FIG. 2, is an unlocking detection electrode. The invention will be explained here by considering an unlocking detection device D and the detection electrode ED as being intended for unlocking the vehicle door V, but the invention can of course be applied mutatis mutandis to a device detection of the vehicle lock and the locking electrode 14 which is located near the second outer surface S2 of the vehicle V. The annex electrode EA is an electrode located between the detection electrode ED and the second outer surface S2 .
    Preferably, the detection electrode ED and the annex electrode EA are situated facing each other. The two said electrodes ED, EA are each constituted by a surface of conductive metal, for example copper, for example rectangular and are located in two parallel planes of main axis, the longitudinal axis X of the handle P. L the detection electrode ED and the auxiliary electrode EA are of substantially equal surfaces.
    In other words, the detection electrode ED and the electrode EA are oriented in such a way that their respective surface is perpendicular to the approach direction of a user's hand, that is, perpendicular to the directions illustrated in Figure 2 by the arrow MS2, representing the approach respectively to the second surface S2 and the arrow MSi, representing the approach to the first surface S1.
    For example, the detection electrode ED and the electrode EA are copper prints on two opposite sides of the same printed circuit.
    The two electrodes ED, EA are connected to control means 13 ', comprising a microcontroller 20 integrated in a printed circuit (see Figure 3).
    Unlike the prior art in which, a conductive element 11 was permanently connected to the ground, the invention proposes here that the conductive element, that is to say the annex electrode EA is connected alternately either to the electrical mass is at a voltage source Vcc.
    The two electrodes ED, EA are supplied with supply voltage Vcc via the microcontroller 20 and have at their terminals each a capacitance value, respectively a first capacitance value CEd and a second capacitance value CEa, which vary from one to the next. approach of a hand of a user.
    The microcontroller 20 comprises measuring means M1 of the first capacitance value CED and the second capacitance value CEA.
    The variation of capacitance at the terminals of an electrode at the approach of an electrical mass (the user's hand) as well as the method and the means for measuring said variation are known from the prior art and will not be known. more detailed here.
    According to the invention, the microcontroller 20 also comprises (see FIG. 3): • first connection means K1 of the detection electrode ED to the measuring means M1, • second connection means K2 of the annex electrode EA to the measuring means M1, control means M2 of the first and second connection means K1, K2, and adjustment means M3 of the voltage across the VED detection electrode and the voltage at the terminals. terminals of the VEA annex electrode, • a H. clock.
    The first connection means K1 and the second connection means K2 may for example be switches (see FIG. 3) located respectively between the measuring means M1 and the detection electrode ED and between the measuring means M1 and EA annex electrode, allowing in the closed position to electrically connect the measuring means M1 to the detection electrode ED (respectively to the annex electrode EA) and measuring the first capacitance value CEd, (respectively the second capacitance value CEa, and in the open position to disconnect the measuring means M1 of the detection electrode ED (respectively of the annex electrode EA) thus making the measurement of the first capacitance value CED, (respectively the second capacitance value CEA) impossible .
    The control means M2 of the first and second connection means K1, K2 are software means integrated in the microcontroller 20.
    The adjustment means M3 of the voltage at the terminals of the VED detection electrode and of the voltage at the terminals of the VEA auxiliary electrode consist, for example, of digital-analog converters electrically connected to the detection electrode ED and to the additional electrode EA, for adjusting in step, the voltage across each electrode ED, EA (see Figure 3).
    The voltages at the terminals of the detection electrode ED and at the terminals of the annex electrode EA can be controlled independently of one another, from a minimum value equal to the electrical ground to a maximum value equal to the voltage Vcc power supply.
    The microcontroller 20 also comprises a clock H connected to the control means M1 for controlling the first connection means K1 and the second connection means M2 at a given instant and for a predetermined duration. The clock H is, for example, an electronic clock intrinsic to the microcontroller 20, for example an oscillator. The clock may also be external to the microcontroller 20.
    The microcontroller 20 also comprises comparison means M4 of the first capacitance value CED of the detection electrode ED and the second capacitance value CEA of the annex electrode EA to a threshold value T of predetermined capacitance.
    The detection method of the invention is described below and is illustrated in FIG.
    In a first step (step E1), the adjustment means M3 of the voltage regulate the voltage across the VED detection electrode and the voltage across the annex electrode EA, so that the two voltages VED, VEA are equal to the supply voltage VCC and therefore equal to each other.
    By supply voltage Vcc is meant the voltage supplied to the electrodes by the microcontroller 20, said supply voltage Vcc may differ from the voltage supplied by the vehicle to the microcontroller 20.
    In a second step (step E2), the control means M2 close the switch K1 and open the switch K2 so that only the detection electrode ED is electrically connected to the measuring means M1 and is measured, via measuring means M1 a first capacitance value CEd across the detection electrode.
    Then in a third step (step E3), the control means M2 open the switch K1 and close the switch K2 so that only the annex electrode EA is electrically connected to the measuring means M1 and is measured, via measuring means M1 a second capacitance value CEa across the annex electrode.
    In the fourth step E4, comparing, via the comparison means M4, the first value CED and the second value CEA between them and / or a threshold value of predetermined capacity T in order to detect the approach and / or the contact of a hand of the user to the first outer surface S1. Said comparison makes it possible to distinguish a true approach detection from a false detection, that is to say from an approach towards the second outer surface S2.
    In a first embodiment of the detection method of the invention, illustrated by the branch A in FIG. 6, the approach detection towards the first external surface S1 is only validated (step 5) if the first value CED is greater than the second value CEA and if the first value CED and the second value CEA are each also greater than a predetermined threshold value T, that is if:
    Ced> Cea
    And if
    Ced> Τ 'with CEA> T
    Otherwise the approach is a false detection (step 6).
    This is illustrated in Figure 4a.
    In the first step, the voltages at the terminals of the two said electrodes are identical and, in the absence of the hand of the user close to the handle P, the first value CED of the capacitance of the detection electrode is equal at the second CEA value of the auxiliary electrode capacitance, that is to say CED = CEA. This is illustrated in FIG. 4, between the time t0 and the time t1, one has CED = CEA.
    Then when approaching the hand to the first outer surface S1 (MSi) between time t1 and time t2, the first measured CED value is greater than the second value CEA. The detection is validated only if the approach is sufficient, that is to say if the first value and the second value are greater than a predetermined threshold value T.
    Conversely, if the hand approaches the second outer surface S2 (MS2), between the instant t3 and the instant t4, the second value CEa is greater than the first value CED "the two said values being greater than the predetermined threshold value T The approach detection is not validated.
    It should be noted that in this example, a single predetermined threshold value T is used to distinguish real approaches from false detections, it may also be envisaged to use two distinct threshold values, a threshold value to validate the MSi approach. and another threshold value for detecting an MS2 approach.
    In a second embodiment of the detection method according to the invention, represented by the branch B in FIG. 6, the method comprises between step 1 and step 2, step 1b which consists in decreasing, thanks to adjustment means M3 of the voltage, the voltage across the auxiliary electrode VEA to a value lower than the supply voltage Vcc, and between step 2 and step 3, step 2b which also consists to decrease by means of adjustment means M3 of the voltage, the voltage across the VED detection electrode to a value lower than the supply voltage Vcc.
    In a preferred embodiment, during step 1b and step 2b, the said two voltages VEA and VED are connected to the electrical ground, their respective values are therefore equal to 0 volts.
    In this second embodiment of the detection method of the invention the approach detection towards the first outer surface S1 is only validated (step 5) if the first value CED is greater than the predetermined threshold value T and if the second value CEA is lower than the predetermined threshold value T, ie if:
    Ced> T and CEA <T
    Otherwise the approach is a false detection (step 6).
    This is illustrated in Figure 4b.
    In the first step, the voltages at the terminals of the two said electrodes are identical and, in the absence of the hand of the user close to the handle P, the first value CED of the capacitance of the detection electrode is equal at the second CEA value of the auxiliary electrode capacitance, that is to say CED = CEA. This is illustrated in FIG. 4, between the time t0 and the time t1, one has CED = CEA.
    Then when approaching the hand to the first outer surface S1 (MSi) between time t1 and time t2, the first value CED measured is greater than the predetermined threshold value T and the second value CEA is less than the predetermined threshold value T.
    Conversely, if the hand approaches the second outer surface S2 (MS2), between the instant t3 and the instant t4, the second value CEA and the first value ΰΕ0 "are greater than the predetermined threshold value T. The approach detection is not validated, it is a false detection.
    Steps 1 to 3 for measuring the first value CEd and the second value CEd are repeated for a measurement duration Δ in the following manner (see FIG.
    A first measurement m1 of the first value CED (step2) is immediately followed by a second measurement m2 (step 3) of the second value CEA, this is illustrated in FIG. 5. The first measurement m1 and the second measurement m2 are durations of equal duration, duration of each, consecutive and repeated at regular intervals I which correspond to a predetermined frequency f, as illustrated in FIG.
    For example: d = 1 ms I = 20 ms or f = - = 50Hz. 0.02 The approach detection step 4 is then performed by comparing the first averaged value CEDmoy, corresponding to the average of the first measurements m1 during the measurement period Δ, to the second averaged value CEAmoy, corresponding to the average of the second measurements. m2 during the measurement time Δ, between them and / or at the predetermined threshold value T.
    In the first embodiment, the subsidiary electrode EA being supplied at the same voltage Vcc as the detection electrode ED, the annex electrode EA widens the range of the detection electrode ED both towards the first surface S1 that to the second surface S2. The detection electrode ED is located near the first surface S1 and the annex electrode EA is located near the second surface S2, when the user approaches his hand near the first surface S1 during the measurement period. Δ, the capacitance of the detection electrode CED (or the first averaged value CEDmoy) is higher than the capacity of the annex electrode CEA (respectively to the second averaged value CEAmoy). Conversely, when the user approaches his hand near the second surface S2, the capacity of the CEA annex electrode (the second average value CEAmoy) is higher than the capacity of the detection electrode CED (or the first averaged value CEDmoy) · By alternating the measurements m1, m2 of the capacitances of the two electrodes CED, CEA and comparing their respective values, we can distinguish an unlocking detection (approach towards the first surface S1) of a false detection (approach towards the second surface S2). However, for the detection to be validated, the first and second values CED, CEA must also be greater than a predetermined threshold value T, corresponding to the desired detection sensitivity.
    In the second embodiment, when a first measurement m1 of capacitance is performed on the detection electrode ED, the voltage across the auxiliary electrode VEA is controlled so as to be lower than the voltage across the terminals of the VEd detection electrode. Conversely, when a second measurement m2 of capacity is performed on the annex electrode EA, the voltage across the detection electrode ED is controlled so as to be lower than the voltage across the auxiliary electrode VEA. In this case, the annex electrodes EA and detection ED act as a partial shielding electrode to each other alternatively. The annex electrode EA then has a reduced detection sensitivity when approaching the first surface S1 and an increased sensitivity when approaching the second surface S2. Conversely, the detection electrode ED then has an increased detection sensitivity when approaching the first surface S1 and a reduced sensitivity when approaching the second surface S2.
    Thus, during the approach to the first surface S1, during the measurement period Δ, the first value CED (or the first averaged value CEDmoy) is greater than the second value CEA (respectively the second average value CEAmoy), and the second CEA value (respectively the second averaged value CEAmoy) is less than the predetermined threshold value T, that is to say to the detection sensitivity, since its sensitivity is reduced. Conversely, when approaching the second surface S2, the first value CED (or the first value averaged CEDmoy) is lower than the second value CEA (respectively the second value averaged CEAmoy), however the two values CED, CEA ( CEDmo, CEAmoy) are in this case greater than the predetermined threshold value T.
    Preferably in this second embodiment, during the first measurement m1 of the capacitance of the detection electrode CED, the annex electrode EA is electrically grounded. Conversely, during the second measurement m2 of the capacity of the CEA auxiliary electrode, the detection electrode ED is electrically grounded. The two electrodes therefore play the role of total shielding electrode alternatively.
    The two electrodes ED, EA then preferentially detect the approach on one side of the handle P. The detection electrode ED is then sensitive only to approaches to the first surface S1 and the annex electrode EA n ' is then sensitive only to approaches to the second surface S2. The invention thus advantageously makes it possible to guarantee a high sensitivity of unlocking approach detection while being robust to false detections.
    For this purpose, the detection method of the invention cleverly proposes two electrodes used in a complementary manner, alternatively used as detection electrode and partial or total shield element, more precisely, the invention proposes that when an electrode is in detection mode, the other is in shielding mode.
    权利要求:
    Claims (12)
    [1" id="c-fr-0001]
    A method of detecting approach and / or contact of a user's hand to a vehicle door handle (V), having a first exterior surface (S1) facing the vehicle (V) and a second outer surface (S2) facing the user, said handle (P) comprising at least one detection electrode (ED) and an auxiliary electrode (EA), said method being characterized in that one disposes beforehand the two said electrodes (ED, EA) vis-à-vis, and in that it comprises the following steps: • Step 1: electrically connect the detection electrode (ED) and the annex electrode (EA ) to a same source of supply voltage (Vcc), • Step 2: measure a first capacitance value (CE) across the detection electrode (ED), • Step 3: measure a second value ( CEa) capacitance at the terminals of the annex electrode (EA), • Step 4: we compare for a duration of measuring (Δ), the first value (CED) and the second value (CEA) between them and / or a predetermined threshold value (T) in order to detect the approach and / or the contact of a user's hand to the first outer surface (S1) or the second outer surface (S2).
    [2" id="c-fr-0002]
    2. Detection method according to the preceding claim, characterized in that said method comprises between step 1 and step 2, the following step: • Step 1b: the voltage is reduced across the electrode annex (VEA) to a value lower than the supply voltage (Vcc), and between step 2 and step 3, the following step: • Step 2b: the voltage across the detection electrode is decreased (VED) to a value lower than the supply voltage (Vcc).
    [3" id="c-fr-0003]
    3. The detection method according to the preceding claim, characterized in that in step 1b, the auxiliary electrode (EA) is electrically connected to the electrical earth.
    [4" id="c-fr-0004]
    4. Detection method according to claim 2 or 3, characterized in that in step 3b is connected electrically the detection electrode (ED) to the electrical ground.
    [5" id="c-fr-0005]
    5. Detection method according to any one of the preceding claims, characterized in that steps 1 to 3 are repeated recurrently and at a predetermined frequency (f) during the measurement period (Δ).
    [6" id="c-fr-0006]
    6. Detection method according to claims 1 and 5, characterized in that step 4 consists of: • Step 4a: if during the measurement period (Δ), the first value (CEd) is greater than the second value ( CEa), and that the first value (CED) and the second value (CEA) are greater than the predetermined threshold value (T), then • Step 5: the approach detection is validated, otherwise • Step 6: no validation detection.
    [7" id="c-fr-0007]
    7. The detection method as claimed in claim 2, 3 or 4, characterized in that step 4 consists of: Step 4b: if during the measurement period (Δ), the first value (CED) is greater than the predetermined threshold value (T) and if the second value (CEA) is lower than the predetermined threshold value (T) then, • Step 5: the approach detection is validated, otherwise • Step 6: no validation of the detection.
    [8" id="c-fr-0008]
    The detection method as claimed in any one of the preceding claims, wherein the detection electrode (ED) is located near the first outer surface (S1) and the subsidiary electrode (EA) is located between the second outer surface ( S2) and the detection electrode (ED), said method is characterized in that in step 4, the approach detection consists of the detection towards the first outer surface (S1).
    [9" id="c-fr-0009]
    9. Device for detecting (D ') approaching and / or contacting a user's hand towards a vehicle door handle (P), having a first outer surface (S1) facing the vehicle (V), and a second user-facing outer surface (S2), said device (D ') comprising at least one voltage source (Vcc), a detection electrode (ED), an auxiliary electrode (EA) , measuring means (M1) of a first capacitance value (CED) across the detection electrode (ED) and a second capacitance value (CEA) across the auxiliary electrode (EA) said device (D ') is characterized in that the two said electrodes (EA, ED) are located opposite each other, and in that it further comprises: first connection means (K1) of the detection electrode (ED) to the measuring means (M1), • the second connection means (K2) of the auxiliary electrode (EA) to the measuring means (M1), control means (M2) of the first and second connection means (K1, K2), and adjustment means (M3) of the voltage across the detection electrode (VED). ) and the voltage across the auxiliary electrode (VEA), • a clock (H) connected to the control means (M2), • comparison means (M4) of the first value (CED) and the second value (CEA) between them and / or has a predetermined threshold value (T).
    [10" id="c-fr-0010]
    10. Detection device (D ') according to the preceding claim, characterized in that it further comprises means for calculating an average of the first value (CEDmoy) and means for calculating an average of the second value (CEAmoy) during a measurement period (Δ), and comparison means (M4) of the average of the first value (CEDmoy) and the average of the second value (CEAmoy) between them and / or the value predetermined threshold (T).
    [11" id="c-fr-0011]
    11. Door handle (P) of a motor vehicle door, characterized in that it comprises a detection device (D ') according to claim 8 or 9.
    [12" id="c-fr-0012]
    12. Motor vehicle (V), characterized in that it comprises a detection device (D ') according to claim 8 or 9.
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    FR2971867A1|2012-08-24|GESTURE CAPACITIVE INTERFACE WITH MEASUREMENT MODE SWITCHING.
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    EP3556016A1|2019-10-23|Device and method for detecting the approach and/or contact, and the pressure of an object in relation to a detection surface
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    WO2018154210A1|2018-08-30|Determining spurious contacts on an approach detection sensor
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    FR3087469A1|2020-04-24|DEVICE FOR DETECTING THE INTENT TO LOCK OR UNLOCK A MOTOR VEHICLE DOOR AND ASSOCIATED METHOD
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    FR3087219A1|2020-04-17|DETECTION DEVICE FOR INTENDING TO LOCK OR UNLOCK A MOTOR VEHICLE DOOR AND RELATED DETECTION METHOD
    FR3070706B1|2019-08-23|DEVICE FOR DETECTING INTENTION OF LOCKING OR UNLOCKING A VEHICLE OF A MOTOR VEHICLE BY A USER AND ASSOCIATED DOOR HANDLE
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    FR3085984A1|2020-03-20|METHOD FOR DETECTING THE INTENT TO LOCK OR UNLOCK A VEHICLE DOOR AND ASSOCIATED DETECTION DEVICE
    EP2712756B1|2016-04-13|Control module
    同族专利:
    公开号 | 公开日
    US20170235008A1|2017-08-17|
    CN107083883A|2017-08-22|
    CN107083883B|2019-05-31|
    FR3047808B1|2019-06-28|
    US10139514B2|2018-11-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20030122556A1|2001-11-20|2003-07-03|Masahiko Sueyoshi|Vehicle door handle system|
    DE102007051495A1|2007-10-27|2009-05-07|Daimler Ag|Handle for automatic opening or closing of vehicle door, has measuring sensor producing measuring field detecting object so that movement and/or speed characteristics of object are identified and evaluated by sensor by field changes|
    US20120167642A1|2009-11-20|2012-07-05|Valeo S.P.A.|Vehicle unlocking control device provided with an outer control member having an over-molded mounting|
    FR3006793A1|2013-06-07|2014-12-12|Continental Automotive France|DEVICE, SENSOR AND METHOD FOR DETECTING THE PRESENCE OF A USER FOR OPENING ACCESS TO A MOTOR VEHICLE|
    US7768272B2|2006-09-08|2010-08-03|Aisin Seiki Kabushiki Kaisha|Capacitance detecting apparatus including first and second variable capacitors which vary with the distance to an object|
    US20080122454A1|2006-11-29|2008-05-29|Aisin Seiki Kabushiki Kaisha|Capacitance detecting apparatus|
    DE102011053314A1|2011-09-06|2013-03-07|Huf Hülsbeck & Fürst Gmbh & Co. Kg|Capacitive sensor arrangement|
    CN102747893B|2012-04-27|2016-02-24|黄正男|A kind of touch lock device for door of car|
    DE102015012598A1|2014-10-01|2016-04-07|U-Shin Ltd.|Proximity sensor and keyless entry device containing it|
    JP2016100099A|2014-11-19|2016-05-30|アイシン精機株式会社|Operation detector for vehicle|
    JP2016100662A|2014-11-19|2016-05-30|アイシン精機株式会社|Operation detector for vehicle|US20190017302A1|2015-07-13|2019-01-17|Huf Hülsbeck & Fürst Gmbh & Co. Kg|Exterior door handle for a vehicle|
    US11078692B2|2017-02-17|2021-08-03|Continental Automotive France|Method for detecting a user's intention to lock or unlock a motor vehicle door and associated device|
    DE102017215333A1|2017-09-01|2019-03-07|Witte Automotive Gmbh|Capacitive sensor arrangement and vehicle exterior handle|
    JP2019124010A|2018-01-12|2019-07-25|アイシン精機株式会社|Operation detector for vehicle|
    JP6860742B2|2018-03-23|2021-04-21|アルプスアルパイン株式会社|Door handle|
    法律状态:
    2017-02-17| PLFP| Fee payment|Year of fee payment: 2 |
    2017-08-18| PLSC| Publication of the preliminary search report|Effective date: 20170818 |
    2018-02-23| PLFP| Fee payment|Year of fee payment: 3 |
    2020-02-19| PLFP| Fee payment|Year of fee payment: 5 |
    2021-02-24| PLFP| Fee payment|Year of fee payment: 6 |
    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 |
    2022-02-11| CA| Change of address|Effective date: 20220103 |
    2022-02-16| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1651142|2016-02-12|
    FR1651142A|FR3047808B1|2016-02-12|2016-02-12|METHOD FOR DETECTING THE APPROACH AND / OR CONTACT OF A HAND FROM A USER TO A VEHICLE DOOR HANDLE AND DETECTION DEVICE THEREFOR|FR1651142A| FR3047808B1|2016-02-12|2016-02-12|METHOD FOR DETECTING THE APPROACH AND / OR CONTACT OF A HAND FROM A USER TO A VEHICLE DOOR HANDLE AND DETECTION DEVICE THEREFOR|
    US15/429,633| US10139514B2|2016-02-12|2017-02-10|Method of detecting the approach of a user's hand to a vehicle door handle or the contact of a user's hand therewith, and associated detection device|
    CN201710073790.XA| CN107083883B|2016-02-12|2017-02-10|The method and associated detection device that close or user the hand of the hand and door handle for vehicle that detect user contacts|
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