Abstract: Disclosed is a method for detecting the approach of an object on a lateral side of a moving motor vehicle with door handles on lateral sides, each including an ultra-high-frequency antenna detecting a portable user apparatus near the vehicle and identifying it to validate hands-free access to the vehicle for the user, the method including: each antenna emitting an electromagnetic field, a first radiated power per steradian of which, in a first zone directed outside of the vehicle and defined by a first aperture angle, is greater than a second radiated power per steradian in a second, lateral zone directed toward the other antenna and defined by a second aperture angle; and, when the vehicle is moving, validating approach detection by antenna reception of an electromagnetic field emitted by the other antenna and reflected by the object, whose received power is higher than a predetermined minimum received power.

Abstract: A presence detection sensor for unlocking an opening panel of a motor vehicle, said sensor comprising a microcontroller implementing an analog-digital converter and comprising a first input, a second input forming the voltage reference of said analog-digital converter, a third input for supplying the microcontroller with voltage, and a plurality of inputs-outputs, and a capacitive voltage divider connected to at least one of the inputs-outputs of the plurality of inputs-outputs. The sensor comprises a resistive module connected between the first input and the second input of the microcontroller and a capacitive module connected between the second input of the microcontroller and a ground.

Abstract: Disclosed is an activation module for a function in a motor vehicle accommodated in a component, the module including a detection and communication device including at least one communication antenna transmitting at a high frequency and a device for detecting a deformation of the component, the communication antenna being connected to a printed circuit board including a unit for measuring voltage variation across the terminals of the communication antenna, a unit for interpreting the measuring unit and transmission and reception unit with an electronic control unit having a unit for activating the function. The communication antenna is movable relative to the printed circuit board under the action of the deformation of the component, the measuring unit then detecting a voltage variation across the terminals of the communication antenna.

Abstract: A device for detecting a user's intention to lock or unlock a motor vehicle opening element, this device being integrated into a handle, including: an inductive sensor that includes an LC resonant circuit consisting at least of a coil and a main capacitor; a handle target; a microcontroller equipped with a unit for measuring the resonant frequency of the LC resonant circuit; an adjustment device for adjusting the value of the total capacitance of the LC resonant circuit, this adjustment device providing at least two different total capacitance values for the LC resonant circuit.

Abstract: A presence detection sensor for unlocking an opening panel of a motor vehicle, said sensor comprising a microcontroller implementing an analog-digital converter and comprising a first input, a second input forming the voltage reference of said analog-digital converter, a third input for supplying the microcontroller with voltage, and a plurality of inputs-outputs, and a capacitive voltage divider connected to at least one of the inputs-outputs of the plurality of inputs-outputs. The sensor comprises a resistive module connected between the first input and the second input of the microcontroller and a capacitive module connected between the second input of the microcontroller and a ground.

Abstract: A device for detecting a user's intention to lock or unlock a motor vehicle opening element, this device being integrated into a handle, including: an inductive sensor that includes an LC resonant circuit consisting at least of a coil and a main capacitor; a handle target; a microcontroller equipped with a unit for measuring the resonant frequency of the LC resonant circuit; an adjustment device for adjusting the value of the total capacitance of the LC resonant circuit, this adjustment device providing at least two different total capacitance values for the LC resonant circuit.

Abstract: Disclosed is a method for detecting the approach of an object on a lateral side of a moving motor vehicle with door handles on lateral sides, each including an ultra-high-frequency antenna detecting a portable user apparatus near the vehicle and identifying it to validate hands-free access to the vehicle for the user, the method including: each antenna emitting an electromagnetic field, a first radiated power per steradian of which, in a first zone directed outside of the vehicle and defined by a first aperture angle, is greater than a second radiated power per steradian in a second, lateral zone directed toward the other antenna and defined by a second aperture angle; and, when the vehicle is moving, validating approach detection by antenna reception of an electromagnetic field emitted by the other antenna and reflected by the object, whose received power is higher than a predetermined minimum received power.

Abstract: Disclosed is an activation module for a function in a motor vehicle accommodated in a component, the module including a detection and communication device including at least one communication antenna transmitting at a high frequency and a device for detecting a deformation of the component, the communication antenna being connected to a printed circuit board including a unit for measuring voltage variation across the terminals of the communication antenna, a unit for interpreting the measuring unit and transmission and reception unit with an electronic control unit having a unit for activating the function. The communication antenna is movable relative to the printed circuit board under the action of the deformation of the component, the measuring unit then detecting a voltage variation across the terminals of the communication antenna.

Abstract: A method for detecting stray contacts on at least one approach or contact sensor integrated into a door handle, the handle including two electrodes whose capacitances are measured, a locking electrode, an unlocking electrode, the method includes detecting simultaneity in the crossing of the noise tolerance limits by the two capacitance value signals, and then in detecting the presence, on at least one signal, of a peak having a predetermined amplitude, the simultaneity and the peak being representative of stray contact on at least one of the electrodes.

Abstract: A method for detecting stray contacts on at least one approach or contact sensor integrated into a door handle, the handle including two electrodes whose capacitances are measured, a locking electrode, an unlocking electrode, the method includes detecting simultaneity in the crossing of the noise tolerance limits by the two capacitance value signals, and then in detecting the presence, on at least one signal, of a peak having a predetermined amplitude, the simultaneity and the peak being representative of stray contact on at least one of the electrodes.

Abstract: Disclosed is a method of detecting the approach and/or contact of a user's hand to a door handle, the handle having a first outer surface oriented toward the vehicle and a second outer surface oriented toward the user, the handle including at least one detection electrode and an additional electrode, positioned face to face in advance. The method includes: the two electrodes are electrically connected to the same power supply source; a first capacitance value is measured at the terminals of the detection electrode; a second capacitance value is measured at the terminals of the additional electrode; and the first and second values are compared, during a measurement period, with one another and/or with a predetermined threshold value, in order to detect the approach of a user's hand toward the first outer surface or toward the second outer surface and/or the contact of his hand with one of these surfaces.

Abstract: A method of calibrating a standby duration (DV?) of a proximity detection sensor, the sensor alternating between measurement phases (PM), the evaluation duration (DE) of which is measured by a first oscillator (O1) of stable frequency and standby phases (PV), the predetermined standby duration (DV) of which is controlled by a second oscillator (O2), the frequency of which varies according to external parameters. The method provides for performing immediately after the measurement phase (PM), a second measurement phase (PM2) during which a second evaluation duration (DE2) is measured by the second oscillator (O2) and calibrating the standby duration (DV?) using the ratio between the number of oscillations (N1?) generated during the evaluation duration (DE) by the first oscillator (O1) and the number of oscillations (N2?) generated during the second evaluation duration (DE2) by the second oscillator (O2).

Abstract: Disclosed is a method of detecting the approach and/or contact of a user's hand to a door handle, the handle having a first outer surface oriented toward the vehicle and a second outer surface oriented toward the user, the handle including at least one detection electrode and an additional electrode, positioned face to face in advance. The method includes: the two electrodes are electrically connected to the same power supply source; a first capacitance value is measured at the terminals of the detection electrode; a second capacitance value is measured at the terminals of the additional electrode; and the first and second values are compared, during a measurement period, with one another and/or with a predetermined threshold value, in order to detect the approach of a user's hand toward the first outer surface or toward the second outer surface and/or the contact of his hand with one of these surfaces.

Abstract: A method for detecting the actuation of a handle (10) of a motor vehicle door (20), the handle (10) including at least a locking electrode (60), having a capacitance across its terminals, and an unlocking request detection device (50) generating an unlocking request signal, the method including continuously measuring a variation of the unlocking request signal and a variation of the capacitance (?CV) of the locking electrode, determining an unlocking request, and then comparing the variation of the capacitance (?CV) with a threshold (S2) during consecutive first and second predetermined periods (t1, t2), respectively, in order to detect whether the handle (10) has been actuated.

Abstract: A method of calibrating a standby duration (DV?) of a proximity detection sensor, the sensor alternating between measurement phases (PM), the evaluation duration (DE) of which is measured by a first oscillator (O1) of stable frequency and standby phases (PV), the predetermined standby duration (DV) of which is controlled by a second oscillator (O2), the frequency of which varies according to external parameters. The method provides for performing immediately after the measurement phase (PM), a second measurement phase (PM2) during which a second evaluation duration (DE2) is measured by the second oscillator (O2) and calibrating the standby duration (DV?) using the ratio between the number of oscillations (N1?) generated during the evaluation duration (DE) by the first oscillator (O1) and the number of oscillations (N2?) generated during the second evaluation duration (DE2) by the second oscillator (O2).

Abstract: A reliable and secure activation of an access based on a detection of movement in a remote access system by providing a secure method for opening/closing of an access in hands-free access mode. The detection of movement relates to the displacement of a lower member of a user by a remote access system, this access system including at least two elements of detection which each emit a signal whose variations (31, 33, 35) are analyzed. The detection of a movement of a lower member is validated by the application of a double verification step according to parameters (dAsA, dAsB) of a criterion for identification (tA, tB; dAsA, dAsB) of a form of variation (F2; A, B) of each signal (31, 33, 35) with a model form of the movement, and according to a criterion for simultaneity of detection of the forms of variation (F2) identified on the two signals.

Abstract: Method for communication between an electronic module and a sensor having a first branch, including a light source LED and a first switch, and a second branch including a second switch, supplied by a supply line, the module measuring modulations of intensity of current of the line. When the light source is turned on or in the process of turning on/turning off, the sensor causes i) modulation of the intensity of the current in the LED between a high state and a low state, ii) modulation of the intensity of the current in the second branch so that the intensity of the current is always in a higher state, and, in case of detection, iii) dispatches to the electronic module a modulation of the intensity of current in the second branch, when the intensity of current in the LED is in the low state.

Abstract: A method for detecting the actuation of a handle (10) of a motor vehicle door (20), the handle (10) including at least a locking electrode (60), having a capacitance across its terminals, and an unlocking request detection device (50) generating an unlocking request signal, the method including continuously measuring a variation of the unlocking request signal and a variation of the capacitance (?CV) of the locking electrode, determining an unlocking request, and then comparing the variation of the capacitance (?CV) with a threshold (S2) during consecutive first and second predetermined periods (t1, t2), respectively, in order to detect whether the handle (10) has been actuated.

Abstract: Method of searching for a variation in capacitance of a capacitive sensor, includes a phase of searching for variation in capacitance and, when a capacitance variation has been detected, a phase of verifying the variation in capacitance. The search phase includes a recurrent step of searching for variation in capacitance including steps of measuring the duration of a first measurement sequence and determining, according to the measured duration, whether a first predefined detection criterion for variation in capacitance is verified. The verification phase includes steps of measuring the duration of a second measurement sequence and determining, according to the measured duration, whether a second predefined detection criterion for variation in capacitance is verified.

Abstract: Method for determining spurious contacts on a contact detection sensor for a handle of an automobile door, the sensor defining a locking area and being connected to an onboard electronic locking and unlocking system, includes: a) detecting a contact on the locking area when, for an engagement time of the locking mechanism, the number of charge transfers from the sensor is less than a threshold number of charge transfers, b) evaluating the number of charge transfers, starting from the time of the minimum value of the number of measured charge transfers and for an evaluation time in order to distinguish detections of contacts made by the user from detections of spurious contacts, c) if the contact detections are spurious, matching the threshold number of charge transfers in order to be able to detect any next contact originating from the user on the locking area in the presence of spurious contacts.