Abstract: A method for estimating the distance between a vehicle and an authentication device, the vehicle including a computer and a plurality of communication modules capable of communicating with the device over a wireless communication link, each communication module including an electronic clock that defines the sampling frequency of the signals received from the device. The method includes in particular the steps of addition of noise to a response signal received from the device, of sampling of the noisy response signal, of detection, at a second instant, of the noisy response signal when the amplitude of the noisy response signal exceeds a predetermined detection threshold, of calculation of the time that has elapsed between a first instant and the second instant, and of estimation of the distance between the vehicle and the device based on the calculated time.

Abstract: A computer including a hardware interface wherein the hardware interface includes a first resistor with a first first resistor pin and a second first resistor pin, a second resistor with a first second resistor pin and a second second resistor pin, a transistor, a comparator; the first first resistor pin being coupled on the one hand to the first hardware interface pin and on the other hand to a first transistor pin.

Abstract: A system of at least two units that transmit and/or receive a signal at a first or a second frequency, respectively, each of the units being individually connected to the antenna, which is common to a first branch and to a second branch, respectively. The first branch or the antenna includes first passive electronics preventing passage of the signal at the second frequency to the first unit and allowing passage of the signal at the first frequency to the antenna. The second branch or the antenna includes second passive electronics preventing passage of the signal at the first frequency to the second unit and allowing passage of the signal at the second frequency to the antenna.

Abstract: An electronic unit suitable for being positioned on an internal face of a tread of a tire with a view to measuring operating parameters of a vehicle wheel equipped with the tire. The electronic unit includes: a body, configured to be embedded into the thickness of the tire, in a housing provided for this purpose, and includes sensors dedicated to measuring operating parameters of the wheel, a head, arranged at one end of the body, including a circuit board for managing information output from the sensors of the body and a way of communicating with a central unit installed in the vehicle; a way for connecting the elements with which the body is equipped and the elements with which the head is equipped; and a way to supply the electronic unit with power.

Abstract: A method for characterizing the curvature of a road section, including: selecting, from among the points of the section, the points marking a curvature of the section; computing, for each selected point of the section contained between the second and the penultimate one, an indicator of curvature of the section at this point; identifying each bend contained in the road section, each bend including a set of successive selected points of the section; and for each bend contained in the road section, comparing the indicator of curvature of at least one of the points of the bend with a predetermined threshold. If the indicator of curvature computed for at least one of the selected points of the bend exceeds the predetermined threshold, recording, in a database, a data record including at least the set of points of the bend, and an item of data characterizing the curvature of the bend.

Abstract: A radio-transmitting sensor for a vehicle wheel, suitable for measuring at least one physical quantity and for transmitting a radio signal representative of this measured physical quantity. The sensor includes a measurement and transmission circuit, an antenna impedance matching circuit, and an antenna circuit. The sensor includes a sensitivity switch controlled by the measurement and transmission circuit and suitable for switching the antenna circuit according to two modes: a dynamic mode in which the antenna circuit is configured as a magnetic antenna, and in which the sensor transmits said radio signal representative of the measured physical quantity, this signal including transmitted data frames; and a static mode in which the antenna circuit is configured as an electric antenna.

Abstract: Disclosed is an electronic device for determining the angular position of a shaft of a motor vehicle, the device including a printed circuit board and a magnetic guide including at least two fastening tabs for fastening to the printed circuit board, the printed circuit board including a base substrate and at least two fastening areas for fastening the magnetic guide, each designed to receive a fastening tab of the magnetic guide, the fastening tab defining a fastening orifice. Each fastening area is defined on the base substrate of the printed circuit board and includes a pad fastened to the base substrate. Each fastening tab is joined to the pad of the corresponding fastening area by way of an adhesive that is applied in its fastening orifice.

Abstract: A method for monitoring the transmission of a safety audio message to the occupants of the passenger compartment of a vehicle. The method including transmitting an audio signal comprising the safety audio message and, mixed with said safety audio message, an identification signal including an identification digital audio message that is looped and frequency modulated, recording the ambient sound in the passenger compartment using a microphone, filtering and demodulating the signal to reconstruct the identification signal, analyzing the reconstructed identification signal to determine: whether the unique identifier corresponding to the transmitted safety audio message is found therein, and whether the time for which the identification signal was transmitted without interruption is indeed equal to the known duration of the safety audio signal, determining that the safety audio message has or has not been correctly transmitted in its entirety depending on the analyzing step.

Abstract: A removable device for retaining electrical contacts, having: a rigid element for holding electrical contacts including a plurality of housings that are configured to accept the electrical contacts, the lateral walls of the holding element that are adjacent to the housings having a plurality of openings that each lead into one housing of the plurality of housings of the holding element; and an elastic element for retaining the electrical contacts in the holding element including a plurality of sprung blades that are arranged facing the openings leading into the housings of the rigid holding element so as to retain the electrical contacts in the housings of the holding element. The invention further relates to a soldering method implementing such a device.

Abstract: A method for reprogramming data of a software function executed by an execution core and a security core, the data being present in two physically separate non-volatile memories, each managed by one of the execution or security cores, including the following steps: upon receiving a reprogramming request, a second value is stored in a first Boolean, determining whether the first Boolean is equal to the second value and if a second Boolean is equal to a first value, and if affirmative; an execution core is made to emit at a reinitialization request via a bidirectional communication channel towards a security core and a request to initialize a portion of the first non-volatile memory towards the set of functions for managing the non-volatile memory by an execution core; a second value is stored in the second Boolean; it is determined whether a predetermined reprogramming event has taken place, and if affirmative, the first value is stored in the first Boolean, while keeping the second value in the second Boolean

Abstract: The invention relates to a crankshaft, transmission or camshaft sensor (10) for a motor vehicle, intended for being connected to an engine control unit (30) by a cable (20). The sensor comprises a processing module (17) and a voltage-modifying circuit (18) configured to generate an output signal via an output port (12) of the sensor (10) allowing a diagnosis module (36) of the engine control unit (30) to detect and identify faults of the sensor (10) or the cable (20). In particular, the processing module (17) is configured to provide on its output port (172), when the toothed target (14) is immobile, a predetermined pattern representing the fact that the toothed target (14) is immobile, this predetermined pattern corresponding to a status change of the output port (172) of the processing module (17) with a predetermined time and repeated periodically. The invention likewise relates to a diagnosis system (1) comprising such a sensor (10), a cable (20) and an engine control unit (30).

Abstract: The present invention relates to a method for analysing the operation of an anti-pollution system for a motor vehicle (1) with an internal combustion engine, said vehicle (1) comprising at least one sensor for measuring (110) a parameter of the vehicle (1) and an analysis computation means (140) directly connected to said measuring sensor (110), said analysis computation means (140) comprising a memory area, said method being characterised in that it comprises a step for using the measuring sensor (110) to measure at least one parameter of the vehicle (1), a step for using the measuring sensor (110) to transmit at least one digital datum representative of the measured value of the parameter to the analysis computation means (140) and a step for using the analysis computation means (140) to compare said digital datum with a predetermined range of values representative of an operation of the anti-pollution system according to a predetermined standard.

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: A method for synchronizing acquisition of an analog signal value with a read signal for a state of an electrical contact of a motor vehicle. The method includes: controlling, at each start time of the first task, the power supply module so that the power supply module generates a read signal voltage pulse at the interface module input; at the same start time, triggering a counter for a predetermined duration shorter than the duration of the read signal voltage pulse; on the expiration of the counter duration, measuring the value of an analog signal generated by the interface module based on the state signal and of the read signal; and controlling, at the next start time of the second task, the power supply module so that the power supply module generates a zero voltage signal at the interface module input until the next start time of the first task.

Abstract: Disclosed is a solution to the use of a speed limiter in a motorcycle that has a high capacity for acceleration, including a method for limiting the speed of a motorcycle using precise parameters of speed, acceleration and required engine torque and a single control button to manage the smart activation and deactivation of the limiter and to input new speed limits Vlim in a simple way. It thus allows the use of a speed-limiting system in a motorcycle that has a high power/weight ratio by avoiding the sources of interference with the riding and the effects liable to jeopardize its stability.

Abstract: In a process for adapting an amount of reducing agent for a removal of nitrogen oxides from the gases in an exhaust line, a first alignment of the amounts of nitrogen oxides measured by upstream and downstream sensors is performed without injection of agent and with a catalyst of the system emptied of ammonia. A second alignment of the estimated reduction of nitrogen oxides with the measured reduction is performed by a difference between amounts of nitrogen oxides upstream and downstream during a substoichiometric injection of reducing agent without creating a store of ammonia in a catalyst of the system with a first correction of the amount of agent. A third alignment of an estimated efficiency of retaining nitrogen oxides with a efficiency measured by the sensors is performed, this third alignment taking place via a second correction of the amount of reducing agent injected as an adaptive correction.

Abstract: A method for transmitting in a passive activation system in a motor vehicle. Between each use-case module and a protocol driver an intermediate management layer is inserted that receives requests from the modules and stores them in a list according to oldness and priority ranking, selects a main request with the highest priority ranking, selects requests compatible with the main request, sends at least one grouped signal corresponding to the main and compatible requests to a portable activation device, receives back from the activation device at least one signal transmitted to the intermediate layer allowing the activation device to be located and then the location thereof to be sent to the case modules that sent the main request or a compatible request, and deletes the main and compatible requests from the list.

Abstract: Disclosed is a device for supplying power to an electronic computer having a first connection terminal coupled to a power supply, a second connection terminal coupled to an electrical ground, a microprocessor having a microprocessor supply input coupled, firstly, to a first terminal of first capacitance of a first capacitor and, secondly, coupled to a supply output of the power supply device, the second terminal of first capacitance being coupled to the electrical ground, the power supply device has a first supply input. It has a diode coupled to the supply input, and to the supply output, and a switching device coupled in parallel with the diode.

Abstract: A device for near-field and ultra-high-frequency communication, the device includes a near-field-communication antenna, an ultra-high-frequency antenna, a control unit including a controller for controlling the ultra-high-frequency antenna and a controller for controlling the near-field-communication antenna, a first carrier on which the NFC antenna is located, a second carrier on which the control unit is located, the first carrier and second carrier being located one above the other and connected by mechanical support pins, it is proposed that the ultra-high-frequency antenna be located on the first carrier and be connected to the control unit via: a first connection located on the first carrier, at least one pin made of conductive metal, and a second connection located on the second carrier, so as to produce a bidirectional ultra-high-frequency antenna.

Abstract: A printed circuit board including electronic components, a carrier equipped with a network of conductor tracks electrically connecting the electronic components, and a plurality of strain gauges positioned on the carrier such that each one of the plurality of corners has a respective one of the plurality of strain gauges positioned closer to the one of the plurality of corners than to any other of the plurality of corners.