• 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 invention relates to a method for detecting the presence of a user for unlocking an access to a motor vehicle from a sensor performing said detection during an acquisition phase and a measurement phase . The method is remarkable in that the acquisition phase and the measurement phase are concomitant.
    公开号:FR3027717A1
    申请号:FR1460359
    申请日:2014-10-28
    公开日:2016-04-29
    发明作者:Christophe Duchemin
    申请人:Continental Automotive GmbH；Continental Automotive France SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the field of the automobile and more particularly relates to the unlocking of an access to a motor vehicle. The invention thus relates to a method of detection by a sensor of the presence of a user for unlocking an access to a motor vehicle, an associated sensor and a motor vehicle comprising such a sensor. In a motor vehicle, it is known to use an access unlocking system comprising a sensor for detecting the presence of a user. Such a sensor is in a known manner in the form of a capacitive proximity sensor for detecting, for example, the presence of a hand of the user on the handle of a door to unlock or to detect the passage of a foot of the user under the trunk of the vehicle to open at least in part. The example of Figure 1 illustrates the unlocking of a door (not shown) of a vehicle by a user with a presence detection sensor 1 housed in the handle 2 of the door. When the user moves his hand M from a first position Pi, remote from the handle 2, to a second position P2, on the handle 2, the sensor 1 detects this presence, which causes the unlocking of the door. For this purpose, the detection sensor 1 comprises, in known manner, a first electrode 3 connected to a printed circuit 4 comprising a so-called "detection" capacitor Cx and a so-called "storage" capacitor Cs. When the hand M of the user is in the second position P2 near the electrode 3, the user behaves like a second electrode, connected to the Earth, which increases the capacitance value of the detection capacitance Cx to a capacitance value greater than the nominal capacitance value of the detection capacitor Cx "at rest" (ie in the absence of a user). A sensor of an existing solution, illustrated in detail in FIG. 2, comprises a generator of a supply voltage Vcc, a first electric circuit Ai, a second electric circuit B1 and means for comparing voltages COMP.
    [0002] The first electrical circuit A1 comprises a first electrode, represented by a detection capacitance Cx, a storage capacitor Cs defining at its terminals a storage voltage Vs, a measurement resistor Rs and three bi-position switches Ti, T2 and Ts. The first switch T1 is disposed between the positive terminal of the voltage generator Vcc and a first terminal of the detection capacitor Cx. The second switch T2 is arranged between the first terminal of the detection capacitor Cx and a first terminal of the storage capacitor Cs, the second terminals, respectively of each of the detection capacitors Cx and of storage Cs, and the negative terminal of the generator voltage Vcc being connected to a ground G. The third switch Ts is arranged between the positive terminal of the voltage generator Vcc and a first terminal of the measuring resistor Rs whose second terminal is connected to the first terminal of the storage capacitor. cs. The second electrical circuit B1 comprises a divider bridge of the supply voltage Vcc, consisting of a first reference resistor Rref1, a second reference resistor Rref2 and a reference capacitance Cref connected to the earth elsewhere. G and defining a reference voltage Vref. The comparison means COMP are in the form of a voltage comparator connected so as to compare the storage voltage Vs across the storage capacitor Cs and the reference voltage Vref across the reference capacitors Cref. In order to detect the presence of a user, the sensor operates alternately during a first so-called "acquisition" phase and a second so-called "measurement" phase. The acquisition phase comprises a predetermined number "nx" of cycles making it possible to load the storage capacitor Cs, this being empty at the beginning of the acquisition phase. In the absence of a user near the sensor, the storage capacity Cs is responsible for a nominal load defining a nominal storage voltage Vs name at the terminals of the storage capacity Cs. Such a sensor is called "low-power linear charge transfer". One cycle comprises four steps allowing a linear charge transfer 25 between the voltage generator Vcc and the storage capacitor Cs via the detection capacitor Cx. In the initial state of the circuit, the three switches T1, 12 and Ts are open. The third switch Ts remains open during the four stages of the acquisition phase. In a first "charging" step, the first switch T1 is closed and the second switch 12 is open, which allows the charging of the detection capacitor Cx by the voltage generator Vcc. In a second so-called "rest" step, the first switch T1 and the second switch 12 are simultaneously open. In a third so-called "discharge" step, the first switch T1 is open and the second switch 12 is closed, which allows transfer by current conduction of the load of the detection capacitor Cx into the storage capacitor Cs. Finally, in a fourth resting step, the first switch T1 and the second switch 12 are simultaneously open again, as illustrated in FIG.
    [0003] When the storage capacity Cs has loaded for a predetermined number "nx" of cycles without a user having come near the sensor, the load of the storage capacity Cs at the end of the acquisition phase corresponds to at the rated load value and the storage voltage at the terminals of the storage capacity Cs corresponds to the nominal storage voltage Vs name at the end of the acquisition phase. On the other hand, when a user is present near the sensor during the acquisition phase, the capacitance of the detection Cx increases and the charge of the storage capacity Cs at the end of the acquisition phase corresponds to a charge. detection greater than the rated load. In this case, the voltage at the terminals of the storage capacity at the end of the acquisition phase is equal to a detection voltage Vs det which is greater than the nominal storage voltage Vs name. During the measurement phase, the first switch 11 and the second switch 12 being open, the third switch Ts is closed so as to load the storage capacitor Cs through the measurement resistor Rs, until the comparator indicates that the storage voltage Vs has reached the reference voltage Vref and the duration is then measured between the instant of closure of the third switch Ts and the instant when the storage voltage Vs reaches said reference voltage Vref. In the absence of a user near the sensor during the acquisition phase, the duration measured between the instant of closure of the third switch Ts (where the storage voltage Vs is equal to the nominal voltage Vs name) and the instant when the storage voltage Vs reaches the reference voltage Vref corresponds to a nominal duration Tnom. In other words, in the absence of detection, the storage voltage Vs reaches the reference voltage Vref after a nominal duration Tnom.
    [0004] In the presence of a user near the sensor during the acquisition phase, the duration measured between the instant of closure of the third switch Ts (where the storage voltage Vs is equal to a detection voltage Vs det greater than the voltage nominal Vs name) and the instant when the storage voltage Vs reaches the reference voltage Vref corresponds to a detection duration Tdet which is lower than the nominal duration Tnom, which indicates the detection of the presence of a user in the vicinity of the sensor electrode. In other words, during a presence detection, the storage voltage Vs reaches the reference voltage Vref more quickly during the measurement phase. Once a user has been detected, the sensor sends a detection signal to an electronic computer of the vehicle called in known manner ECU (Electronic Control Unit in English) which then unlocks the corresponding access of the vehicle, possibly after authentication .
    [0005] In this solution, the succession of the predetermined number "nx" of cycles of the acquisition phase and the measurement phase can be time-consuming, thus increasing the detection time and the unlocking of the access, which presents a problem. significant disadvantage.
    [0006] The invention therefore aims to solve this drawback by proposing a simple, reliable, fast and effective solution for reducing the detection time of the presence of a user for unlocking an access to a vehicle. To this end, the subject of the invention is a method of detection by a sensor of the presence of a user for unlocking an access to a motor vehicle, said sensor comprising: a generator of a voltage of power supply, a first electrical circuit comprising a capability of detecting the presence of a user defining at its terminals a detection voltage, a storage capacity defining a storage voltage at its terminals, means for controlling the charging load, the detection capacity from the supply voltage, means for controlling the discharge of the detection capacity in the storage capacity and means for calibrating a charging current of the storage capacity generated from the supply voltage, a second electrical circuit comprising a reference capacitor defining at its terminals a reference voltage and a divider bridge of the voltage of supplying the reference voltage; means for comparing said storage voltage and said reference voltage in order to detect the presence of a user for unlocking an access to the motor vehicle, said method comprising a phase of acquisition during which a step of charging the detection capacitance and a step of discharging said detection capacitance into the storage capacitor are successively repeated a predetermined number "n ×" of times and a measurement phase comprising a charging step of The storage capacity from the supply voltage, the method being remarkable in that the acquisition phase and the measurement phase are concomitant. Simultaneous realization of the acquisition phase and the measurement phase significantly reduces the detection time of the presence of a user, the two phases being performed in parallel. More preferably, the sensor comprising a digital-to-analog converter (DAC or Digital Analogical Converter), the method comprises a step of determining the reference voltage by said digital-to-analog converter so that it is strictly superior. at the storage voltage at the end of the predetermined number "nx" discharges the detection capacity into the storage capacity. Advantageously, the difference between the reference voltage and the storage voltage following the predetermined number "nx" of discharges is less than 100 mV. The use of a digital-to-analog converter thus makes it possible to dynamically define the reference voltage to be reached in order to compensate for drift of the components, in particular the capacitance of the detection capacitor, and to minimize the measurement time of the sensor. The invention also relates to a sensor for detecting the presence of a user for unlocking an access to a motor vehicle, said sensor comprising: a generator of a supply voltage, a first electrical circuit comprising: a capability of detecting the presence of a user defining at its terminals a detection voltage, a storage capacitor defining at its terminals a storage voltage, means for controlling the charge of the detection capacitor from the supply voltage, means for controlling the discharge of the detection capacitance in the storage capacity and means for calibrating a charging current of the storage capacity generated from the supply voltage; a second electrical circuit comprising a reference capacitance defining at its terminals a reference voltage and a voltage divider bridge of the supply voltage in the a reference voltage, means for comparing said storage voltage and said reference voltage in order to detect the presence of a user for unlocking an access to the motor vehicle, the sensor being remarkable in that the Calibration means are in the form of a measuring resistor, preferably single, continuously electrically connected, on the one hand, to the generator of the supply voltage and, on the other hand, to the storage capacitor. The absence of a switch between the generator of the supply voltage and the measurement resistor makes it possible to simultaneously perform the acquisition phase and the measurement phase, which advantageously reduces the detection time of the presence of a user. near the sensor, while maintaining a similar sensitivity of the sensor. In addition, the absence of a switch between the generator of the supply voltage and the measurement resistor makes it possible to reduce the complexity and therefore the cost of the sensor.
    [0007] Preferably, the calibration means consist of a measuring resistor, preferably single, continuously electrically connected, on the one hand, to the generator of the supply voltage and, on the other hand, to the storage capacity. More preferably, the sensor comprises a digital-to-analog converter (DAC or Digital Analogical Converter) configured to determine the reference voltage so that it is strictly greater than the storage voltage at the end of the predetermined number "nx "Discharges the detection capability into the storage capacity. The invention also relates to a motor vehicle comprising a sensor 10 as presented above. Other features and advantages of the invention will become apparent from the following description given with reference to the appended figures given by way of non-limiting examples and in which identical references are given to similar objects. Figure 1 (already commented) schematically illustrates the unlocking of a door of a motor vehicle by detection of the presence of the hand of a user. Figure 2 (already commented) illustrates an embodiment of a sensor of the prior art. Figure 3 illustrates an embodiment of a sensor according to the invention. FIG. 4 illustrates the variations of the storage voltage Vs and of the reference voltage Vref during a cycle of an acquisition phase of the sensor of FIG. 3. The sensor according to the invention is intended to be mounted in a motor vehicle 25 to allow the unlocking of one of its accesses, such as, for example, its trunk or a door. An embodiment of the sensor is described below with reference to FIG. 3. The detection sensor comprises a generator of a DC supply voltage Vcc, for example 5 V, a first electrical circuit A2, a second circuit Electrical B2 and comparison means COMP of voltages. The first electrical circuit A2 comprises a detection capacitor Cx of the presence of a user constituting at least part of the first electrode, a storage capacitor Cs, means for controlling the charge of the detection capacitor Cx from the detector. supply voltage Vcc, means for controlling the discharge of the detection capacitance Cx in the storage capacitor Cs and means for controlling the charge of the storage capacitor Cs from the supply voltage Vcc.
    [0008] The first electrode extends into an element of the vehicle, for example a handle, so that a part of the body of a user, forming a second electrode connected to the Earth, can come close to the first electrode and thus increase the capacitance of a detection capacitance Cx.
    [0009] The detection capacitor Cx defines at its terminals a detection voltage Vx and the storage capacitor Cs defines at its terminals a storage voltage Vs from the detection voltage Vx. The means for controlling the charge of the detection capacitor Cx from the supply voltage Vcc are in this example in the form of a first two-position switch Ti connected, on the one hand, to the positive terminal of the supply voltage generator Vcc, and, secondly, to a first terminal of the detection capacitor Cx. The first switch Ti is configured to switch between a closed position, in which it allows the passage of an electric current generated by the supply voltage Vcc, and an open position, in which it prevents the passage of an electric current generated by the supply voltage Vcc. The means for controlling the discharge of the detection capacitor Cx in the storage capacitor Cs are in this example in the form of a second switch T2 connected, on the one hand, to the first terminal of the detection capacitor Cx , and, secondly, at a first terminal of the storage capacity Cs. The second switch T2 is configured to switch between a closed position, in which it allows the passage of an electric current generated by the discharge of the detection capacitor Cx, and an open position, in which it prevents the passage of a current electric. The second terminals of each of the detection capacitors Cx and storage Cs as well as the negative terminal of the voltage generator Vcc are connected to a ground G. Preferably, the first switch T1 and the second switch T2 are controlled by a microcontroller (not shown) The means for controlling the charge of the storage capacitor Cs from the supply voltage Vcc are in this example in the form of a single measuring resistor Rs which is continuously electrically connected, on the one hand, by its first terminal, to the positive terminal of the generator of the supply voltage Vcc and, secondly, by its second terminal, to the first terminal of the storage capacity Cs. This measurement resistor Rs allows the storage capacity Cs to be loaded from the power supply generator Vcc until the storage voltage Vs reaches the value of a reference voltage Vref described hereinafter.
    [0010] By way of example, the values of the detection capacitance Cx, of the storage capacitor Cs and of the measurement resistor Rs can be as follows: Cx = 70 pF Cs = 30 nF Rs = 430 kc) The second electrical circuit B2 comprises a reference capacitance Cref defining at its terminals a reference voltage Vref and a divider bridge of the supply voltage Vcc. The bridge divides the supply voltage Vcc into the reference voltage Vref. For this purpose, the bridge comprises a first reference resistor Rref1 and a second reference resistor Rref2. The first reference resistor Rref 1 is connected, on the one hand, by its first branch, to the positive terminal of the generator of the supply voltage Vcc and, on the other hand, by its second branch, to a first branch of the Cref reference capacity. The second reference resistor Rref2 is connected, on the one hand, by its first branch, to the first branch of the reference capacitance Cref and, on the other hand, by its second branch, to the ground G. The second branch of the reference capacitance Cref is connected to the ground G. It will be noted that the aforementioned digital-to-analog converter can replace the first reference resistor Rref 1 and the second reference resistor Rref2 so that the reference voltage is adjustable by programming software. For example, the values of the reference capacity Cref, the first reference resistance Rref 1 and the second reference resistance Rref2 may be the following: Cref = 10 nF Rref1 = 47 kc) Rref2 = 47 kc The comparison means COMP of voltages are configured to compare the storage voltage Vs and the reference voltage Vref in order to detect the presence of a user and to allow the unlocking of an access to the motor vehicle when these two voltages are equal. . In known manner, the comparison means COMP may be in the form of a voltage comparator. Optionally, the sensor may comprise a digital-to-analog converter (DAC) configured to determine the reference voltage Vref so that it is strictly greater than the storage voltage Vs at the end of the predetermined number "nx" of discharges of the detection capacity Cx in the storage capacity Cs. In order to detect the presence of a user, the sensor operates during a so-called "acquisition" phase and a second so-called "measurement" phase. According to the invention, these two phases are at least partly concomitant. The acquisition phase comprises a predetermined number "nx" of cycles for charging the storage capacity Cs, the latter being empty at the origin of the acquisition phase. In the absence of a user near the sensor, the storage capacity Cs is charged with a nominal load defining a nominal storage voltage Vs name at the terminals of the storage capacitor Cs. Such a sensor is called "low-power linear charge transfer". With reference to FIG. 4, a cycle lasts a time T and comprises four steps allowing a linear charge transfer between the voltage generator Vcc and the storage capacitor Cs via the detection capacitor Cx. In the initial state of the circuit, the first switch 11 and the second switch 12 are open. In a first step El "called charge", the first switch 11 is closed, which allows the charging of the detection capacitor Cx by the voltage generator Vcc. In a second step E2 called "rest", the first switch 11 and the second switch 12 are open. In a third step E3 called "discharge", the second switch 12 is closed, which allows transfer TC, by current conduction, the load of the detection capacitor Cx in the storage capacity Cs. Finally, in a fourth resting step E4, the first switch 11 and the second switch 12 are open. According to the invention, as illustrated in FIG. 4, the measurement phase takes place at the same time as the acquisition phase. The storage capacitor Cs is thus continuously loaded both by the load transfer TC of the detection capacitor Cx and by the linear load LIN through the measurement resistor Rs, which makes it possible to reduce the overall measurement time and therefore sensor detection. This charge of the storage capacity Cs is carried out until the comparator indicates that the storage voltage Vs and the reference voltage Vref are equal and the duration of this charge is measured. When the sensor comprises a digital-to-analog converter (DAC 35 or Digital Analogical Converter in English language), this digital-analog converter makes it possible to determine the reference voltage Vref dynamically so that it is strictly greater than the storage voltage Vs to the end of the predetermined number "nx" of discharges of the detection capacity Cx in the storage capacity Cs. Advantageously, this reference voltage value Vs can be set so that the difference between the reference voltage Vref and the storage voltage Vs following the predetermined number "nx" of discharges is less than 100 mV.
    [0011] In the absence of a user near the sensor during the acquisition and measurement phases, the duration measured between the start time of the first cycle of the acquisition phase and the instant when the storage voltage Vs reaches the reference voltage Vref corresponds to a nominal duration Tnom. In other words, in the absence of detection, the storage voltage Vs reaches the reference voltage Vref after a nominal duration Tnom. Thus, when the storage capacity Cs has loaded for a predetermined number "nx" of cycles, this indicates that no user has come near the sensor, the load of the storage capacity Cs at the end of the acquisition phase then corresponding to a nominal load value and the storage voltage Vs across the storage capacity Cs then corresponding to a nominal storage voltage Vs name. On the other hand, in the presence of a user near the sensor the acquisition and measurement phases, the capacitance of the detection capacitor Cx increasing, the number "y" of cycles necessary for the storage voltage Vs to reach the voltage Vs is less than the predetermined number "nx" of cycles. In other words, the duration measured between the start time of the first cycle of the acquisition phase and the instant when the storage voltage Vs reaches the reference voltage Vref corresponds to a detection time Tdet which is less than at the nominal duration Tnom (ie the storage voltage Vs reaches more quickly the reference voltage Vref). Once a user has been detected, the sensor sends a detection signal to an electronic computer of the vehicle called in known manner ECU (Electronic Control Unit in English) which then unlocks the corresponding access of the vehicle, possibly after authentication . The realization of the measurement phase at the same time as the acquisition phase, that is to say from the outset and not one after the other, thus allows a gain of acquisition time and therefore of detection. which advantageously leads to a faster unlocking of access to the vehicle and a decrease in power consumption of the sensor. Finally, it should be noted that the present invention is not limited to the examples described above and is capable of numerous variants accessible to those skilled in the art.
    权利要求:
    Claims (6)
    [0001]
    REVENDICATIONS1. A method of detection by a sensor (1) of the presence of a user for unlocking an access to a motor vehicle, said sensor (1) comprising: - a generator of a supply voltage (Vcc), - a first electrical circuit (A2) comprising a detection capacitance (Cx) for the presence of a user defining at its terminals a detection voltage (Vx), a storage capacitor (Cs) defining at its terminals a storage voltage ( Vs), means for controlling the charge of the detection capacitance (Cx) from the supply voltage (Vcc), means for controlling the discharge of the detection capacitance (Cx) in the storage capacity (Cs) and means for calibrating a charging current of the storage capacitor (Cs) generated from the supply voltage (Vcc), - a second electrical circuit (B2) comprising a reference capacitor (Cref ) defining at its terminals a reference voltage (Vr ef) and a divider bridge of the supply voltage (Vcc) to the reference voltage (Vref), - means for comparing (COMP) said storage voltage (Vs) and said reference voltage (Vref) so as to detecting the presence of a user for unlocking an access to the motor vehicle, said method comprising an acquisition phase during which a step (El)) of charging the detection capacitor (Cx) and a step (E3 ) of discharging said detection capacitance (Cx) into the storage capacitor (Cs) are successively repeated a predetermined number "nx" of times and a measurement phase comprising a step of charging the storage capacitor (Cs) from the supply voltage (Vcc), the method being characterized in that the acquisition phase and the measurement phase are concomitant.
    [0002]
    2. Method according to claim 1, characterized in that, the sensor (1) comprising a digital-analog converter, the method comprises a step of determining the reference voltage (Vref) by said digital-analog converter so that it is strictly greater than the storage voltage (Vs) at the end of the predetermined number "nx" of discharges of the detection capacitance (Cx) in the storage capacity (Cs).
    [0003]
    3. Method according to the preceding claim, characterized in that the difference between the reference voltage (Vref) and the storage voltage (Vs) following the number "nx" of discharges is less than 100 mV.
    [0004]
    4. Sensor (1) for detecting the presence of a user for unlocking an access to a motor vehicle, said sensor comprising: - a generator of a supply voltage (Vcc), - a first electrical circuit (A2) comprising a detection capacitance (Cx) for the presence of a user defining at its terminals a detection voltage (Vx), a storage capacitor (Cs) defining at its terminals a storage voltage (Vs), means for controlling the charge of the detection capacitance (Cx) from the supply voltage (Vcc), means for controlling the discharge of the detection capacitance (Cx) in the storage capacitor (Cs) and means for calibrating a charging current of the storage capacitor (Cs) generated from the supply voltage (Vcc), - a second electrical circuit (B2) comprising a reference capacitor (Cref) defining at its terminals a reference voltage (Vref) and a div bridge voltage source of the supply voltage (Vcc) in the reference voltage (Vref), - means for comparing (COMP) said storage voltage (Vs) and said reference voltage (Vref) in order to detect the presence of a user for unlocking an access to the motor vehicle, the sensor (1) being characterized in that the calibration means are in the form of a measuring resistor (Rs) continuously electrically connected, on the one hand, to the generator of the supply voltage (Vcc) and, on the other hand, to the storage capacity (Cs).
    [0005]
    5. Sensor (1) according to the preceding claim, characterized in that it comprises a digital-analog converter configured to determine the reference voltage (Vref) so that it is strictly greater than the storage voltage 25 (Vs) at the end of a predetermined number "nx" of discharges of the detection capacity (Cx) in the storage capacity (Cs).
    [0006]
    6. Motor vehicle comprising a sensor (1) according to any one of the preceding claims 4 to 5.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2013091821A1|2011-12-23|2013-06-27|Continental Automotive France|Capacitance variation measurement device with low power consumption and associated method|
    DE102012224007A1|2012-12-20|2014-06-26|Ifm Electronic Gmbh|Method for determining capacitance of measuring capacitor for capacitive sensor by using device, involves connecting measuring capacitor with previously discharged load capacitor to reload charge stored on measuring capacitor|
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    FR2926418B1|2008-01-16|2012-05-11|Continental Automotive France|LOAD TRANSFER TYPE SENSOR WITH LOW ENERGY CONSUMPTION.|
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    FR2999833B1|2012-12-19|2015-01-23|Continental Automotive France|DEVICE FOR MEASURING A VARIATION OF CAPACITY AND ASSOCIATED MEASURING METHOD|JP6737122B2|2016-10-19|2020-08-05|アイシン精機株式会社|Vehicle door operation detection device|
    FR3067528B1|2017-06-13|2020-10-09|Continental Automotive France|REMOTE POWER SUPPLY, POSITION SENSOR AND WIRELESS COMMUNICATION DEVICE FOR DOOR DEPLOYING HANDLES|
    FR3067529B1|2017-06-13|2019-06-28|Continental Automotive France|TELE-POWER, POSITION SENSOR AND WIRELESS COMMUNICATION DEVICE FOR A MOTOR VEHICLE DEPLOYING DOOR HANDLE|
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    法律状态:
    2015-10-23| PLFP| Fee payment|Year of fee payment: 2 |
    2016-04-29| PLSC| Publication of the preliminary search report|Effective date: 20160429 |
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    2017-10-24| PLFP| Fee payment|Year of fee payment: 4 |
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    2019-10-28| PLFP| Fee payment|Year of fee payment: 6 |
    2020-10-21| PLFP| Fee payment|Year of fee payment: 7 |
    2021-04-16| TP| Transmission of property|Owner name: VITESCO TECHNOLOGIES, DE Effective date: 20210309 |
    2021-10-21| PLFP| Fee payment|Year of fee payment: 8 |
    2022-02-11| CA| Change of address|Effective date: 20220103 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1460359A|FR3027717B1|2014-10-28|2014-10-28|METHOD FOR DETECTING BY A SENSOR THE PRESENCE OF A USER FOR UNLOCKING ACCESS TO A MOTOR VEHICLE AND ASSOCIATED SENSOR|FR1460359A| FR3027717B1|2014-10-28|2014-10-28|METHOD FOR DETECTING BY A SENSOR THE PRESENCE OF A USER FOR UNLOCKING ACCESS TO A MOTOR VEHICLE AND ASSOCIATED SENSOR|
    US14/920,190| US20160117875A1|2014-10-28|2015-10-22|Method for using a sensor to detect a user's presence for unlocking an access to a motor vehicle, and sensor associated therewith|
    CN201510704355.3A| CN105549094B|2014-10-28|2015-10-27|User is detected to exist to unlock the method and associated sensor of the access to motor vehicle|
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