公开(公告)号：US20240067184A1

公开(公告)日：2024-02-29

申请号：US18496124

申请日：2023-10-27

Applicant: STMICROELECTRONICS S.r.l. ,  STMICROELECTRONICS, INC. ,  STMicroelectronics (Grand Ouest) SAS

Inventor： Nicola Matteo PALELLA ,  Leonardo COLOMBO ,  Andrea DONADEL ,  Roberto MURA ,  Mahaveer JAIN ,  Joelle PHILIPPE

IPC: B60W40/101 ,  B60W40/11 ,  B60W40/112 ,  B60W40/114 ,  G01S19/47

CPC classification number: B60W40/101 ,  B60W40/11 ,  B60W40/112 ,  B60W40/114 ,  G01S19/47 ,  B60W2520/28

Abstract: A system includes inertial sensors and a GPS. The system generates a first estimated vehicle velocity based on motion data and positioning data, generates a second estimated vehicle velocity based on the processed motion data and the first estimated vehicle velocity, and generates fused datasets indicative of position, velocity and attitude of a vehicle based on the processed motion data, the positioning data and the second estimated vehicle velocity. The generating the second estimated vehicle velocity includes: filtering the motion data, transforming the filtered motion data in a frequency domain based on the first estimated vehicle velocity, generating spectral power density signals, generating an estimated wheel angular frequency and an estimated wheel size based on the spectral power density signals, and generating the second estimated vehicle velocity as a function of the estimated wheel angular frequency and the estimated wheel size.

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.

公开(公告)号：US20230358541A1

公开(公告)日：2023-11-09

申请号：US18352969

申请日：2023-07-14

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

CPC classification number: G01C21/165 ,  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.

公开(公告)号：US20220080979A1

公开(公告)日：2022-03-17

申请号：US17470962

申请日：2021-09-09

Applicant: STMICROELECTRONICS S.r.l. ,  STMICROELECTRONICS, INC. ,  STMicroelectronics (Grand Ouest) SAS

Inventor： Nicola Matteo PALELLA ,  Leonardo COLOMBO ,  Andrea DONADEL ,  Roberto MURA ,  Mahaveer JAIN ,  Joëlle PHILIPPE

IPC: B60W40/101 ,  B60W40/11 ,  B60W40/112 ,  B60W40/114 ,  G01S19/47

Abstract: A system includes inertial sensors and a GPS. The system generates a first estimated vehicle velocity based on motion data and positioning data, generates a second estimated vehicle velocity based on the processed motion data and the first estimated vehicle velocity, and generates fused datasets indicative of position, velocity and attitude of a vehicle based on the processed motion data, the positioning data and the second estimated vehicle velocity. The generating the second estimated vehicle velocity includes: filtering the motion data, transforming the filtered motion data in a frequency domain based on the first estimated vehicle velocity, generating spectral power density signals, generating an estimated wheel angular frequency and an estimated wheel size based on the spectral power density signals, and generating the second estimated vehicle velocity as a function of the estimated wheel angular frequency and the estimated wheel size.