Abstract: A method for detecting and estimating an angle of rotation on itself, about a mounting axis, of a wheel unit with an acceleration sensor, the wheel unit being associated with a tire mounted on a rim, forming a wheel, the sensor detecting a gravitational force during the rotation of the wheel, forming a sinusoid. The wheel unit is mounted on the wheel with the acceleration sensor directly or indirectly inclined with respect to a plane tangential to the rim. The angle of rotation on itself of said wheel unit and therefore of the acceleration sensor at a given instant is estimated by comparing at least one parameter of the sinusoids that are obtained for the wheel unit in an initial mounting position on the wheel and in its position at this given instant, respectively.

Abstract: A backup power supply system that is intended to be installed in a vehicle, the system includes a backup battery, a synchronous voltage step-up circuit, a user device providing an emergency service, supplied with power under normal circumstances by the main battery of the vehicle, and under exceptional circumstances by the backup battery through the voltage step-up circuit. The voltage step-up circuit includes a coil, a first transistor and a second transistor. The system includes a backup battery discharge test circuit. The first transistor is used to draw current from the backup battery according to a predefined pattern, which makes it possible, by simultaneously measuring the voltage of the backup battery, to determine an indicator of the state of health of the backup battery.

Abstract: Disclosed is a method for managing the starting of a combustion engine of a hybrid drive system including a combustion engine and an electric machine, as well as a drive shaft, the electric machine producing torque to start the combustion engine and drive the drive shaft at least during an initial phase of the start. In a transient starting phase, the combustion engine drives the drive shaft and the electric machine is stopped. The electric machine is regulated, during the initial phase and transient phases, with a first engine speed setpoint. The transient phase begins when the drive shaft reaches the first engine speed setpoint and remains steady. Torque control produced by the electric machine during the transient starting phase being configured so that the electric machine is stopped as soon as the control determines that the torque produced by the electric machine is tending toward zero torque.

Abstract: Disclosed is a method for detecting the direction of rotation of a crankshaft of an engine of a motor vehicle. The detection method includes in particular, when the crankshaft is in a second predetermined angular position between a low angular position and a high angular position of the crankshaft, a step of commanding the closure of a control valve for the intake of fuel into the high-pressure pump, a step of measuring a second pressure value in the high-pressure rail, and a step of detecting a nominal direction of rotation of the crankshaft if the second pressure value measured is greater than or equal to an expected pressure value or of detecting a reverse direction of rotation of the crankshaft if the second pressure value measured is less than the expected pressure value.

Abstract: Disclosed is a method for adapting a control signal of a control circuit for at least one injector of a combustion engine of a motor vehicle, the control signal being a voltage-pulse signal of variable frequency varying between a minimum frequency and a maximum frequency and which is characterized over a given period by its duty cycle. For a given period of the control signal, the method includes determining the start time of the given period and of detecting the first pulse in the given period from the start time and, when the duration of the detected first pulse is included in a minimum time interval beginning at the start of the given period and the duration of which is dependent on the maximum frequency, modifying the duration of the detected first pulse so that the duration becomes equal to the duration of the minimum time interval.

Abstract: Disclosed is a method for remotely loading digital data to an electronics unit for measuring operating parameters of a wheel of a motor vehicle, the remote loading being carried out by a remote loading tool external to the wheel. The method includes the positioning of the external remote loading tool in the proximity of the wheel at least, emission of at least one frame of mechanical waves by the external remote loading tool toward the electronics unit, the waves being representative of the data to be remotely loaded, reception of at least the frame of mechanical waves by the electronics unit via the mechanical parameter measurement sensor, and the conversion of the mechanical waves into electrical signals and then into digital signals containing the remotely loaded data in digital form, and the storage of the remotely loaded data in the electronics unit.

Abstract: A system for detecting command gestures made by a finger of a motor vehicle driver, including at least one interface pad, a light source that emits an infrared optical beam toward the interface pad, an imaging sensor, in order to capture images steered by the interface pad away from the driver, the interface pad including a base frame and a movable plate that is movable between a rest position and at least one activation position, the base frame including a first inclined edge and the movable plate including a second inclined edge, the first and second inclined edges forming a zone of contrasts of interest as seen by the imaging sensor, and being separated by a space or brought closer together depending on the position of the movable plate, and generating a contrast effect in the images of the interface pad that are captured by the imaging sensor.

Abstract: Disclosed is a method for estimating a physical stoppage of an engine of a motor vehicle, subject to bounce-back, a target equipped with teeth being borne by the crankshaft and successive passes of the teeth past a sensor being detected, a first time count incrementing since a last detection of the passing of a tooth and being associated with a first time threshold with the first count being reset to zero when the time between passes of two successive teeth is below the first threshold. A second count associated with a second time threshold is performed, with this count being suspended when and for as long as a time between the passes of two successive teeth is below the second threshold, the engine being estimated to have stopped as soon as the counts have respectively reached the first and second thresholds.

Abstract: Disclosed is a method for detecting a fault in an electric motor of a power-assisted steering system of an automobile vehicle. The method notably includes a step for: determination of a residual direct sinusoidal voltage and of a residual quadrature sinusoidal voltage based on the measured direct sinusoidal current, on the estimated direct sinusoidal current, on the measured quadrature sinusoidal current and on the estimated quadrature sinusoidal current; and detection of a fault when the difference between the value of the residual direct sinusoidal voltage and its moving average is greater than a first threshold and/or when the difference between the value of the quadrature sinusoidal voltage and its moving average is greater than a second threshold.

Abstract: A method and system for evaluating the reliability of data supplied by multi-function WFC sensors of tires of wheels of a vehicle for targeted applications, on the basis of the irregularities of the road, which use displacement data sent from the road handling adaptation equipment of the vehicle, enabling the variations in the road condition to be reflected. The system includes equipment for monitoring the wheel displacement data for adapting it to the variations of profile of the road on which it is traveling, in order to maintain a stable body position. The monitoring equipment is linked to the WFC sensors via a central processing unit which is capable of correlating data supplied by the WFC sensors and values of wheel displacement data supplied by the monitoring equipment for the purpose of weighting the values of at least one parameter obtained from the data delivered by the WFC sensors.

Abstract: A method for defining a measurement range, called the useful span, of the inductive position sensor with emission of a cosine and sine signal by at least one first receiver winding and at least one second receiver winding, respectively. The cosine signal emitted by the one or more second receiver windings is taken as reference signal between the two sine and cosine signals for an adjustment of at least one parameter of the sine signal depending on a corresponding parameter of the cosine signal, at least one of the dimension and positioning parameters of the one or more first receiver windings being configured to generate a sine signal having the at least one parameter of the sine signal adjusted with respect to the cosine signal.

Abstract: Temperature measuring device for measuring the temperature of a member, the member including a component controlled by a control signal, active at most during at least one limited activity interval, and transmitted to the component via two wires, a temperature probe connected to the two wires, in parallel with the component, and a diode, connected between a terminal of the component and a terminal of the probe connected to the same wire, in order to allow the passage of a current in the component only in a first direction, the temperature measurement being performed by a current flowing in a second direction, opposite to the first direction, outside of the activity interval.

Abstract: Disclosed is a motor vehicle solenoid valve (10). The solenoid valve includes a fixed body (20) intended to be mounted in a hydraulic system of the vehicle, a cylindrical coil supporting unit (40) mounted on the fixed body, a mobile body (30) slidingly mounted in the fixed body through the coil supporting unit and at least a first coil winding (50) arranged about the coil supporting unit and suitable for generating a magnetic field for control of the sliding of the mobile body. The solenoid valve further includes a second coil winding (60) arranged about the first coil winding in order to contain the magnetic field generated by the first coil winding.

Abstract: A device for a handle able to be deployed in relation to a motor vehicle door. The device includes a primary module integrated into the door, supplying power, through inductive coupling, to a secondary module integrated into the handle and that moves in relation to the primary module along a predetermined path when the door handle moves between a deployed position and a retracted position. An advantageous arrangement of two primary coils of the primary module and of a secondary coil of the secondary module allows the device to estimate the position of the door handle. Furthermore, the device makes it possible to establish a wireless communication link between the primary module and the secondary module.

Abstract: A method for determining a cell current limit for a traction battery and for an onboard network that is supplied with power by the traction battery in a motor vehicle with, respectively, a cell and onboard network voltage limiter using an integral feedback loop calculating a respective integral current term. The integral feedback loops of the two voltage limiters are interdependent, the integral current terms of the cell voltage limiter being transmitted to the integral feedback loop of the network voltage limiter and the integral terms of the voltage limiter of the network being transmitted to the integral feedback loop of the cell voltage limiter so as to determine a battery current limit that is common to the two limiters.

Abstract: A method for determining the integrity of navigation data of a control unit of an automotive vehicle, including the steps involving setting two counters to a value strictly above the maximum of the two counters, and, in a waking phase, calculating the fingerprints of the data written to the reset safe area, comparing the counters and determining the integrity of the data when the counters are the same.

Abstract: Disclosed is a method for estimating an angular position of top dead center for a high-pressure fuel injection pump that forms part of a system for injecting fuel into a motor vehicle engine, the pump including at least one piston moving in a chamber between the top and the bottom dead center, the pump being equipped with a digital control valve for controlling a quantity of fuel, an electrical current being applied to the digital valve as it closes then removed in order to open the digital valve, a movement of the digital valve in the direction of opening creating an induced current which makes it possible to detect a position of start-of-opening of the digital valve. An instant at which the pump piston passes through top dead center is estimated as a function of an instant at which the position of start-of-opening of the digital valve appears.

Abstract: A method for automatic calibration of an engine camshaft sensor, the engine including at least one camshaft, a coded toothed target associated with this camshaft and a magnetic field sensor placed in the vicinity of the target to detect magnetic field variations induced by passage of the target's teeth in the vicinity of the sensor, the sensor delivering an electrical signal representative of teeth and gaps of the target depending on a predetermined switching threshold as a function of the magnetic field's amplitude, the method continuously measuring the value of the magnetic field. The method calculating switching thresholds of the leading edges of the teeth over a new turn of the target to improve the precision of detection of the leading edges of the teeth.

Abstract: An inductive position sensor including at least two secondary windings consisting of a plurality of turns that are formed on two opposite faces of a printed circuit board and divided into first and second sectors. The first and second sectors are divided, in one turn width, into a first portion on one face of the printed circuit board and a second portion on an opposite face. The second portion of the first sector is extended by a first portion of the second sector and the first portion of the first sector is connected to the second portion of the second sector of a neighboring turn. The portions are connected pairwise by a respective via passing through the printed circuit board.

Abstract: A charging device housed on board a motor vehicle includes at least one “WPC” inductive primary antenna, having a charging frequency, and a second “A4WP” resonant primary antenna, having a resonant frequency at least 1000 times higher than the charging frequency, a ferromagnetic body situated below and joined to the inductive antenna. The method for charging a mobile terminal includes: equipping the ferromagnetic body and inductive antenna beforehand with a system able to move the ferromagnetic body and inductive antenna with respect to the resonant antenna, moving the ferromagnetic body associated with the inductive antenna with respect to the resonant antenna, depending on the resonant frequency of the resonant antenna when the mobile terminal is charged by the resonant antenna, and moving the ferromagnetic body associated with the inductive antenna depending on the charging efficiency of the inductive antenna when the mobile terminal is charged by the inductive antenna.