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    DEAD RECKONING BY DETERMINING MISALIGNMENT ANGLE BETWEEN MOVEMENT DIRECTION AND SENSOR HEADING DIRECTION
    1.
    发明申请
    DEAD RECKONING BY DETERMINING MISALIGNMENT ANGLE BETWEEN MOVEMENT DIRECTION AND SENSOR HEADING DIRECTION 有权

    公开(公告)号：US20220082387A1

    公开(公告)日：2022-03-17

    申请号：US17532792

    申请日：2021-11-22

    Applicant: STMICROELECTRONICS, INC.

    Inventor： Mahaveer JAIN ,  Mahesh CHOWDHARY

    IPC: G01C21/16 ,  G01C21/20 ,  G01C21/28 ,  G01S19/47

    Abstract: A device including microelectromechanical systems (MEMS) sensors is used in dead reckoning in conditions where Global Positioning System (GPS) signals or Global Navigation Satellite System (GNSS) signals are lost. The device is capable of tracking the location of the device after the GPS/GNSS signals are lost by using MEMS sensors such as accelerometers and gyroscopes. By calculating a misalignment angle between a sensor frame of the device with either the movement direction of the vehicle or the walking direction of a pedestrian using the MEMS sensors, the device can accurately calculate the location of a user of the device even without the GPS/GNSS signals. Accordingly, a device capable of tracking the location of a pedestrian and a user riding in a vehicle without utilizing GPS/GNSS signals can be provided.

    SYSTEM AND METHOD FOR FAST MAGNETOMETER CALIBRATION USING GYROSCOPE
    4.
    发明申请
    SYSTEM AND METHOD FOR FAST MAGNETOMETER CALIBRATION USING GYROSCOPE 有权

    公开(公告)号：US20220206085A1

    公开(公告)日：2022-06-30

    申请号：US17135628

    申请日：2020-12-28

    Applicant: STMicroelectronics, Inc.

    Inventor： Mahaveer JAIN ,  Mahesh CHOWDHARY

    IPC: G01R33/00 ,  G01C25/00

    Abstract: An electronic device includes a magnetometer that outputs magnetometer sensor signals and a gyroscope that outputs gyroscope sensor signals. The electronic device includes a magnetometer calibration module that calibrates the magnetometer utilizing the gyroscope sensor signals. The electronic device generates a first magnetometer calibration parameter based on a Kalman filter process. The electronic device generates a second magnetometer calibration parameter based on a least squares estimation process.

    METHOD AND SYSTEM FOR GENERATING MACHINE LEARNING BASED CLASSIFIERS FOR RECONFIGURABLE SENSOR
    5.
    发明申请
    METHOD AND SYSTEM FOR GENERATING MACHINE LEARNING BASED CLASSIFIERS FOR RECONFIGURABLE SENSOR 有权

    公开(公告)号：US20210201191A1

    公开(公告)日：2021-07-01

    申请号：US16728822

    申请日：2019-12-27

    Applicant: STMicroelectronics, Inc.

    Inventor： Mahesh CHOWDHARY ,  Mahaveer JAIN

    IPC: G06N20/00 ,  G06N5/00

    Abstract: A sensor management system includes a cloud-based sensor configuration system and an electronic device. The electronic device includes a sensor unit. The sensor unit includes configuration data that controls operation of the sensor unit. The configuration data includes a classifier that classifies feature sets generated from sensor signals of the sensor unit. The electronic device sends sensor data to the cloud-based sensor configuration system. The cloud-based sensor configuration system analyzes the sensor data and generates a new classifier customized for the sensor unit based on the sensor data. The cloud-based sensor configuration system sends the new classifier to the electronic device. The electronic device replaces the classifier in the sensor unit with the new classifier.

    ROBUST SENSOR TIMESTAMP MANAGEMENT
    8.
    发明申请
    ROBUST SENSOR TIMESTAMP MANAGEMENT 有权

    公开(公告)号：US20210191755A1

    公开(公告)日：2021-06-24

    申请号：US16721331

    申请日：2019-12-19

    Applicant: STMicroelectronics, Inc.

    Inventor： Karimuddin SAYED ,  Ashish BHARGAVA ,  Chandandeep Singh PABLA ,  Mahesh CHOWDHARY

    IPC: G06F9/48 ,  G06F9/54 ,  G06F11/07 ,  G06F11/30

    Abstract: Systems, methods and devices are provided to improve management and accuracy of timestamps associated with sensor-based data. An indication is received of a sensor event associated with data samples provided from a sensor having an output data rate. A respective timestamp is assigned to each of the data samples. Assigning the respective timestamp may include, responsive to a determination that the indicated event is an interrupt event, calculating an actual data sampling interval based at least in part on time intervals between previous sensor events and a on a quantity of the one or more data samples. Assigning the respective timestamp may alternatively include, responsive to a determination that the event type is a data flush event, assigning the respective timestamp based on an actual data sampling interval associated with one or more previous sensor events if the actual data sampling interval has been previously stored, and otherwise assigning the respective timestamp based at least in part on the output data rate. Correction logic and drift compensation may be applied to the assigned respective timestamps.

    INERTIAL NAVIGATION SYSTEM CAPABLE OF DEAD RECKONING IN VEHICLES
    9.
    发明申请
    INERTIAL NAVIGATION SYSTEM CAPABLE OF DEAD RECKONING IN VEHICLES 审中-公开

    公开(公告)号：US20200348137A1

    公开(公告)日：2020-11-05

    申请号：US16399842

    申请日：2019-04-30

    Applicant: STMICROELECTRONICS, INC. ,  STMICROELECTRONICS S.r.l.

    Inventor： Mahaveer JAIN ,  Mahesh CHOWDHARY ,  Roberto MURA ,  Nicola Matteo PALELLA ,  Leonardo COLOMBO

    IPC: G01C21/16 ,  G01C21/20 ,  G01S19/49

    Abstract: A device including microelectromechanical systems (MEMS) sensors are used in dead reckoning in conditions where Global Positioning System (GPS) signals or Global Navigation Satellite System (GNSS) signals are lost. The device is capable of tracking the location of the device after the GPS/GNSS signals are lost by using MEMS sensors such as accelerometers and gyroscopes. By calculating a misalignment angle between a forward axis of a sensor frame of the device and a forward axis of a vehicle frame using the data received from the MEMS sensors, the device can accurately calculate the location of a user or the vehicle of the device even without the GPS/GNSS signals. Accordingly, a device capable of tracking the location of the user riding in the vehicle in GPS/GNSS signals absent environment can be provided.

    RECONFIGURABLE SENSOR UNIT FOR ELECTRONIC DEVICE
    10.
    发明申请
    RECONFIGURABLE SENSOR UNIT FOR ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20190186916A1

    公开(公告)日：2019-06-20

    申请号：US16284448

    申请日：2019-02-25

    Applicant: STMicroelectronics, Inc.

    Inventor： Mahesh CHOWDHARY ,  Sankalp DAYAL

    IPC: G01C19/32 ,  G01C19/5776

    Abstract: A sensor chip is mounted on a PCB and electrically connected to a SOC mounted on the PCB via at least one conductive trace. The sensor chip includes configuration registers storing and outputting configuration data, and a PLD receiving digital data. The PLD performs an extraction of features of the digital data in accordance with the configuration data, and the configuration data includes changeable parameters of the extraction. A classification unit processes the extracted features of the digital data so as to generate a context of an electronic device into which the sensor chip is incorporated relative to its surroundings, the processing being performed in using a processing technique operating in accordance with the configuration data. The configuration data also includes changeable parameters of the processing technique. The classification unit outputs the context to data registers for storage.

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