Patents by Inventor Marie-Nathalie Larue
Marie-Nathalie Larue has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230296066Abstract: A sensor for a motor vehicle, the vehicle including a combustion engine and an engine control computer. The engine includes at least one drive shaft able to be driven in rotation, the at least one drive shaft having at least one magnetic element, the sensor being disposed facing the at least one magnetic element, the computer being configured to determine the angular position of the at least one drive shaft in relation to a predefined reference angular position on the basis of an output signal supplied by the sensor, the sensor being characterized in that it is able to generate a square wave output signal. Each square wave is characterized by an initial instant and a temporal width, by associating each initial instant with a predefined angular position of the drive shaft.Type: ApplicationFiled: July 7, 2021Publication date: September 21, 2023Inventors: Marie-Nathalie Larue, Fabien Joseph, Stéphane Eloy
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Patent number: 11530935Abstract: 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).Type: GrantFiled: September 26, 2018Date of Patent: December 20, 2022Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBHInventors: Marie-Nathalie Larue, Masuo Hannuki, Benjamin Marconato
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Patent number: 11112277Abstract: Disclosed is a camshaft or crankshaft sensor including a toothed target, a measuring cell adapted to supply a raw signal and a processor module having two modes of operation: 1) a measurement mode in which the processor module is adapted to supply an output port of the sensor a measurement signal representing the times of passage of the teeth of the target at the level of the measuring cell; and 2) a diagnostic mode in which the processor module is adapted to supply at the output port of the sensor a diagnostic signal different from the measurement signal and representing the amplitude of the raw signal. Also disclosed is a method and a module for diagnosing such a sensor.Type: GrantFiled: November 26, 2015Date of Patent: September 7, 2021Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBHInventors: David Mirassou, Marie-Nathalie Larue, Yann Dinard, Olivier Marle
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Publication number: 20200256708Abstract: 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).Type: ApplicationFiled: September 26, 2018Publication date: August 13, 2020Inventors: Marie-Nathalie Larue, Masuo Hannuki, Benjamin Marconato
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Patent number: 10267657Abstract: A method for automatic calibration of a camshaft sensor for a motor vehicle, allowing reduction of the fluctuations on the output signal of the sensor. The method proposes comparing, on each target rotation, the new maximum values of the magnetic field of each tooth to the maximum values of the same teeth from the preceding target rotation. The switching thresholds are only calculated with the new maximum values if these differ from the maximum values of the preceding target rotation. Moreover, the invention proposes using a single minimum value of the magnetic field, i.e. the absolute minimum value on a target rotation in order to calculate the switching thresholds.Type: GrantFiled: September 1, 2016Date of Patent: April 23, 2019Assignees: Continental Automotive France, Continental Automotive GmbHInventors: David Mirassou, Marie-Nathalie Larue, Jérôme Burg
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Patent number: 10215591Abstract: Disclosed is a method for adapting a detection threshold (S1) of a magnetic field sensor for a crankshaft of a motor vehicle equipped with the “stop & go” function, the sensor delivering a signal (B) of variations of magnetic field having two states, such as: State 1: when the crankshaft is rotating: the signal includes rising fronts and falling fronts, State 2: when the crankshaft is stopped: the signal has an aperiodic progressive drift (?TAR). The method includes for state 2 steps making it possible to estimate the variation (?1, ?2, ?3, ?4 . . . ?i) of the value (V1, V2 . . . Vi) of the signal (B) during the stopped phase of the crankshaft in order to adapt the detection threshold (S1) to a new value (S4) applicable for the detection of the first tooth upon restart of the engine (R).Type: GrantFiled: June 1, 2015Date of Patent: February 26, 2019Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBHInventors: David Mirassou, Marie-Nathalie Larue
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Publication number: 20180259365Abstract: A method for automatic calibration of a camshaft sensor for a motor vehicle, allowing reduction of the fluctuations on the output signal of the sensor. The method proposes comparing, on each target rotation, the new maximum values of the magnetic field of each tooth to the maximum values of the same teeth from the preceding target rotation. The switching thresholds are only calculated with the new maximum values if these differ from the maximum values of the preceding target rotation. Moreover, the invention proposes using a single minimum value of the magnetic field, i.e. the absolute minimum value on a target rotation in order to calculate the switching thresholds.Type: ApplicationFiled: September 1, 2016Publication date: September 13, 2018Inventors: David Mirassou, Marie-Nathalie Larue, Jérôme Burg
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Publication number: 20170322053Abstract: Disclosed is a camshaft or crankshaft sensor including a toothed target, a measuring cell adapted to supply a raw signal and a processor module having two modes of operation: 1) a measurement mode in which the processor module is adapted to supply an output port of the sensor a measurement signal representing the times of passage of the teeth of the target at the level of the measuring cell; and 2) a diagnostic mode in which the processor module is adapted to supply at the output port of the sensor a diagnostic signal different from the measurement signal and representing the amplitude of the raw signal. Also disclosed is a method and a module for diagnosing such a sensor.Type: ApplicationFiled: November 26, 2015Publication date: November 9, 2017Applicants: Continental Automotive France, Continental Automotive GMBHInventors: David MIRASSOU, Marie-Nathalie LARUE, Yann DINARD, Olivier MARLE
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Patent number: 9780664Abstract: A power supply device, including: a switching structure for controlling a continuous current in an inductive load on the basis of at least one control signal of a power switch; and anomaly detection elements, generating at least one item of information about the detection of an anomaly of the open circuit type in the wiring from the load to the switching structure. The anomaly detection elements include: elements for measuring the current flowing in the inductive load; elements for comparing the measured current continuously with a threshold value; and elements for counting a time interval during which the measured current remains continuously below the threshold value, delivering the anomaly detection information if the counted time interval>a reference time interval, which is k times greater than a period of the control signal, where k>1, and if the duty cycle of the control signal>a threshold value.Type: GrantFiled: February 19, 2015Date of Patent: October 3, 2017Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBHInventors: Angelo Pasqualetto, Marie-Nathalie Larue
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Patent number: 9644997Abstract: An automatic calibration method for a motor vehicle camshaft sensor, the vehicle having at least one camshaft, a toothed encoded target (or magnetic encoder) associated with this camshaft, and a magnetic field sensor placed near the target to detect magnetic field variations caused by the passage of the teeth of the target near the sensor, the sensor delivering signals corrected by a predetermined detection threshold K, the method including: continuously measuring the value of the magnetic field during at least one revolution of the target, determining the maximum amplitude Amax of the field measured during this revolution, determining the minimum amplitude Amin of the field measured during this revolution, finding the ratio of the amplitudes A min A max and determining an auto-adaptive correction coefficient K? to be applied to the signal received from the magnetic sensor, with allowance for the geometrical imperfections of the target, according to the following formula: K ? = A min AType: GrantFiled: July 20, 2012Date of Patent: May 9, 2017Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBHInventors: Laure Carbonne, Marie-Nathalie Larue, Olivier Marle
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Publication number: 20170012530Abstract: A power supply device, including: a switching structure for controlling a continuous current in an inductive load on the basis of at least one control signal of a power switch; and anomaly detection elements, generating at least one item of information about the detection of an anomaly of the open circuit type in the wiring from the load to the switching structure. The anomaly detection elements include: elements for measuring the current flowing in the inductive load; elements for comparing the measured current continuously with a threshold value; and elements for counting a time interval during which the measured current remains continuously below the threshold value, delivering the anomaly detection information if the counted time interval>a reference time interval, which is k times greater than a period of the control signal, where k>1, and if the duty cycle of the control signal>a threshold value.Type: ApplicationFiled: February 19, 2015Publication date: January 12, 2017Inventors: Angelo PASQUALETTO, Marie-Nathalie LARUE
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Publication number: 20150346004Abstract: Disclosed is a method for adapting a detection threshold (S1) of a magnetic field sensor for a crankshaft of a motor vehicle equipped with the “stop & go” function, the sensor delivering a signal (B) of variations of magnetic field having two states, such as: State 1: when the crankshaft is rotating: the signal includes rising fronts and falling fronts, State 2: when the crankshaft is stopped: the signal has an aperiodic progressive drift (?TAR). The method includes for state 2 steps making it possible to estimate the variation (?1, ?2, ?3, ?4 . . . ?i) of the value (V1, V2 . . . Vi) of the signal (B) during the stopped phase of the crankshaft in order to adapt the detection threshold (S1) to a new value (S4) applicable for the detection of the first tooth upon restart of the engine (R).Type: ApplicationFiled: June 1, 2015Publication date: December 3, 2015Inventors: David MIRASSOU, Marie-Nathalie LARUE
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Publication number: 20140195186Abstract: An automatic calibration method for a motor vehicle camshaft sensor, the vehicle having at least one camshaft, a toothed encoded target (or magnetic encoder) associated with this camshaft, and a magnetic field sensor placed near the target to detect magnetic field variations caused by the passage of the teeth of the target near the sensor, the sensor delivering signals corrected by a predetermined detection threshold K, the method including: continuously measuring the value of the magnetic field during at least one revolution of the target, determining the maximum amplitude Amax of the field measured during this revolution, determining the minimum amplitude Amin of the field measured during this revolution, finding the ratio of the amplitudes A min A max and determining an auto-adaptive correction coefficient K? to be applied to the signal received from the magnetic sensor, with allowance for the geometrical imperfections of the target, according to the following formula: K ? = A min AType: ApplicationFiled: July 20, 2012Publication date: July 10, 2014Applicant: CONTINENTAL AUTOMOTIVE GMBHInventors: Laure Carbonne, Marie-Nathalie Larue, Olivier Marle