Abstract: A device for a presence detection system for detecting the presence of a user close to a motor vehicle is configured to: activate a piezoelectric element during an “awake” time interval to stabilize the piezoelectric element; then, control the supply of voltage to an oscillator and supply the oscillator with a reference electrical signal forming a current voltage reference, so the transceiver circuit transmits a signal during what is called a “transmission” time interval; during the transmission time interval, measure the frequency of a reflected signal resulting from the transmitted signal, measure the frequency of the transmitted signal, and determine a corrected reference based on the measured frequency of the transmitted signal, allowing the oscillator to operate at a target frequency value. This allows limiting the energy consumption of a transceiver device used to detect the presence of a user close to a motor vehicle.

Abstract: A detection system for a vehicle, including at least one detection device operable for detecting objects in a detection area. The detection device also includes a first emission antenna, a first reception antenna, and a plurality of extension portions. One of the plurality of extension portions is integrally formed as part of the first emission antenna, and another of the plurality of extension portions is integrally formed as part of the first reception antenna. The first emission antenna generates an emission wave at a predetermined angle which contacts objects in the first detection area and deflects of the objects in the first detection area, and returns to the first reception antenna as a return wave. In an embodiment, the first emission antenna includes at least one Vivaldi wing, and the first reception antenna includes at least one Vivaldi wing.

Abstract: A detection system for a vehicle, including at least one detection device operable for detecting objects in a detection area. The detection device also includes a first emission antenna, a first reception antenna, and a plurality of extension portions. One of the plurality of extension portions is integrally formed as part of the first emission antenna, and another of the plurality of extension portions is integrally formed as part of the first reception antenna. The first emission antenna generates an emission wave at a predetermined angle which contacts objects in the first detection area and deflects of the objects in the first detection area, and returns to the first reception antenna as a return wave. In an embodiment, the first emission antenna includes at least one Vivaldi wing, and the first reception antenna includes at least one Vivaldi wing.

Abstract: Disclosed is a method for opening an opening element of a motor vehicle having a device detecting a predetermined movement of a user's body part, including a Doppler radar, including an antenna, radar waves transmitter/receiver and a radar wave processor. The method includes detection modes and standby modes with reduced wave frequency, the method including during standby: Phase demodulating the reflected radar waves and determining a first signal representing a phase variation of the reflected waves over time; Phase-shift demodulating the reflected radar waves, and determining a second signal representing phase variation of the reflected waves shifted as a function of time; Comparing threshold to maximum value of the absolute values for the first and second signals; Exiting the standby mode and triggering the detection mode if the maximum is greater than the predetermined threshold; Opening the opening element if the predetermined movement is detected during the detection mode.

Abstract: A device for a presence detection system for detecting the presence of a user close to a motor vehicle is configured to: activate a piezoelectric element during an “awake” time interval to stabilize the piezoelectric element; then, control the supply of voltage to an oscillator and supply the oscillator with a reference electrical signal forming a current voltage reference, so the transceiver circuit transmits a signal during what is called a “transmission” time interval; during the transmission time interval, measure the frequency of a reflected signal resulting from the transmitted signal, measure the frequency of the transmitted signal, and determine a corrected reference based on the measured frequency of the transmitted signal, allowing the oscillator to operate at a target frequency value. This allows limiting the energy consumption of a transceiver device used to detect the presence of a user close to a motor vehicle.

Abstract: A device for determining the position of a magnetic element (50), the magnetic element being able to be moved in at least two directions relative to a longitudinal axis (A), a first direction (Z) and a second direction (X). The device includes: a position sensor (60) including two sets of two Hall-effect cells measuring the same magnetic field generated by the magnetic element, a first set along a first axis (B) substantially perpendicular the longitudinal axis (A), and a second set along a second axis (C) substantially parallel to the first axis (B), the magnetic element being moveable relative to the position sensor; first unit (91) for calculating the position of the magnetic element in the main direction (Z); and second unit (92) for calculating the position of the magnetic element in the secondary direction (X).

Abstract: Method for determining the position of a magnetic element on a gearbox selector of an automobile, generating a magnetic field ({right arrow over (V)}), the speed selector moving in two directions with respect to a longitudinal axis, a main direction and a secondary direction, the magnetic element facing a position sensor including three Hall effect cells, includes measuring three voltages (V1, V2, V3) at the respective outputs of the three Hall effect cells oriented in the same direction and positioned as follows: two cells being aligned on a transverse axis perpendicular to the longitudinal axis, the third cell being positioned on the longitudinal axis perpendicularly to the transverse axis, passing through the other two Hall effect cells, calculating a ratiometric ratio (P) between the first, second and third voltages defined by: P = k * ( V 3 + k 1 * V V + k 3 * V 3 ) with V=?{square root over (V12+V22)} and k, k1, and k3 being constants, deducing the position of

Abstract: The object of the present invention is a device (D) for continuous detection of a break in electric insulation between a high-voltage cable (10a, 10b) and an electrical ground (C), the high-voltage cable being connected, on one side, to a direct high-voltage current generator (10) and, on the other side, to a device (20) for using said high voltage, and generating a parasitic capacitance Cp with the electrical ground.

Abstract: A Hall effect measuring device under the hood of a motor vehicle includes a housing, a Hall effect sensor including a holed magnet and a chip arranged at the Gaussian zero point of the magnet, and a ferromagnetic target including a measurement surface in which the chip is securely attached to the magnet, and defines a measurement plane. The sensor and the ferromagnetic target are arranged to be imparted with a relative motion with respect to one another, the sensor being positioned in the housing and configured to measure the value of the magnetic field of the magnet, vertically in line with the chip, on a measurement axis perpendicular to the measurement plane based on relative translational motion and on relative rotational motion.

Abstract: A device for determining the position of a magnetic element (50), the magnetic element being able to be moved in at least two directions relative to a longitudinal axis (A), a first direction (Z) and a second direction (X). The device includes: a position sensor (60) including two sets of two Hall-effect cells measuring the same magnetic field generated by the magnetic element, a first set along a first axis (B) substantially perpendicular the longitudinal axis (A), and a second set along a second axis (C) substantially parallel to the first axis (B), the magnetic element being moveable relative to the position sensor; first unit (91) for calculating the position of the magnetic element in the main direction (Z); and second unit (92) for calculating the position of the magnetic element in the secondary direction (X).

Abstract: The invention relates to an angular position measuring device (20) including a magnetic sensor (10) cooperating with a moving magnetic element (12), the sensor including at least one first (R1-R4) and one second (R5-R8) group of magnetoresistive elements each configured as a Wheatstone bridge, suitable for supplying a first and a second measurement signal (Sin, Cos) respectively proportional to the sine and the cosine of twice the angular position (?) of the moving magnetic element, and a processing unit supplying a response corresponding to the angular position from the first and second measurement signals, characterized in that the sensor is deliberately offset relative to an axis (14) of the moving magnetic element and in that the latter is deliberately offset relative to its rotation axis (30), by offset values that are deliberately selected so that the angular measurement range extends beyond 180°.

Abstract: Method for determining the position of a magnetic element on a gearbox selector of an automobile, generating a magnetic field ({right arrow over (V)}), the speed selector moving in two directions with respect to a longitudinal axis, a main direction and a secondary direction, the magnetic element facing a position sensor including three Hall effect cells, includes measuring three voltages (V1, V2, V3) at the respective outputs of the three Hall effect cells oriented in the same direction and positioned as follows: two cells being aligned on a transverse axis perpendicular to the longitudinal axis, the third cell being positioned on the longitudinal axis perpendicularly to the transverse axis, passing through the other two Hall effect cells, calculating a ratiometric ratio (P) between the first, second and third voltages defined by: P = k * ( V 3 + k 1 * V V + k 3 * V 3 ) with V=?{square root over (V12+V22)} and k, k1, and k3 being constants, deducing the position of

Abstract: A method and a device for measuring the angular position, between two steering locks, of a steering wheel of a vehicle, includes equipping the vehicle with a main gearing (4, 5) designed, once the vehicle has started, to make it possible to calculate the absolute angular position of the steering wheel from data provided by a first angular sensor (15) associated with this main gearing. According to the invention, the vehicle is additionally equipped with an auxiliary gearing composed of one of the gearwheels (5) of the main gearing, of a third gearwheel (8), and of intermediate elements (6, 7, 9) for sequentially driving the third gearwheel (8) that are able to make it possible, upon starting of the vehicle, to measure the angular position of the third gearwheel (8) via a second angular sensor (16) associated with this gearwheel.

Abstract: A Hall effect measuring device under the hood of a motor vehicle, includes: a housing, a Hall effect sensor, including a holed magnet and a chip arranged at the Gaussian zero point of the magnet, and a ferromagnetic target including a measurement surface, in which the chip is securely attached to the magnet, and defines a measurement plane, the sensor and the ferromagnetic target are able to be imparted with a relative motion with respect to one another, the sensor is positioned in the housing and configured to measure the value of the magnetic field of the magnet, vertically in line with the chip, on a measurement axis perpendicular to the measurement plane, wherein the sensor is linear, the device includes a reference position corresponding to a given relative position of the chip and the target, the relative motion is with two degrees of freedom, each of which respectively corresponds to a translational motion or to a rotational motion, the device is configured to detect a deviation from the referen

Abstract: A position measuring device using the Hall effect, includes: a box (30); and a Hall-effect sensor (1), including a cylindrical magnet (10) and a chip (20), in which device: the chip (20) is fastened to the magnet (10); the magnet (10) has a hole (11) right through it, along an axis perpendicular to its bases, and has an outer perimeter (12) and an inner perimeter (13); and the sensor (1) is positioned in the box (30). The device is noteworthy in that: the inner perimeter (13) is maximized in relation to the mechanical constraints of the magnet (10); and the area of the hole (11) is equal to or greater than the area of the chip (20), so as to obviate the presence of iron filings facing the chip (20).

Abstract: The invention relates to an angular position measuring device (20) including a magnetic sensor (10) cooperating with a moving magnetic element (12), the sensor including at least one first (R1-R4) and one second (R5-R8) group of magnetoresistive elements each configured as a Wheatstone bridge, suitable for supplying a first and a second measurement signal (Sin, Cos) respectively proportional to the sine and the cosine of twice the angular position (?) of the moving magnetic element, and a processing unit supplying a response corresponding to the angular position from the first and second measurement signals, characterized in that the sensor is deliberately offset relative to an axis (14) of the moving magnetic element and in that the latter is deliberately offset relative to its rotation axis (30), by offset values that are deliberately selected so that the angular measurement range extends beyond 180°.

Abstract: According to the intended use, an electrical conductor (1) having a magnetically sensitive surface (10) subjected to the magnetic force of a permanent magnet (11) is produced, the area of this surface varying according to its relative position with respect to the magnet, said relative position between the magnet and the magnetically sensitive surface is varied, which causes at least one physical characteristic of this conductor, to vary, and said variation in physical characteristic(s) of the electrical conductor is recorded, this variation being in correlation with the position of the magnet (11).

Abstract: A method and a device for measuring the angular position, between two steering locks, of a steering wheel of a vehicle, includes equipping the vehicle with a main gearing (4, 5) designed, once the vehicle has started, to make it possible to calculate the absolute angular position of the steering wheel from data provided by a first angular sensor (15) associated with this main gearing. According to the invention, the vehicle is additionally equipped with an auxiliary gearing composed of one of the gearwheels (5) of the main gearing, of a third gearwheel (8), and of intermediate elements (6, 7, 9) for sequentially driving the third gearwheel (8) that are able to make it possible, upon starting of the vehicle, to measure the angular position of the third gearwheel (8) via a second angular sensor (16) associated with this gearwheel.

Abstract: The invention relates to the use of magneto-impedance on a contactless position sensor and to the corresponding sensor. According to the invention, an electrical conductor (1) is produced which has a magnetically-sensitive surface (10) that is subjected to the magnetic force of a permanent magnet (11), said surface varying depending on the relative position thereof in relation to the magnet. The relative position between the magnet and the magnetically-sensitive surface is varied, thereby varying at least one physical characteristic of the conductor, and the variation in the physical characteristic(s) of the electrical conductor is noted, said variation being in correlation with the position of the magnet (11).

Abstract: An integrated circuit device (2) designed to be incorporated in a portable object with memory, in particular of card format. The integrated circuit device (2) comprises at least a capacitor (8) for attenuating-the amplitude of current peaks (Idd) consumed by the integrated circuit device (2). The attenuation of such current peaks is particularly useful for attenuating electric signatures in smart cards.