US 12,130,305 B2
Inertia measurement device, vehicle, and electronic device
Yusuke Kinoshita, Minowa (JP); and Nobuyuki Imai, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Oct. 16, 2023, as Appl. No. 18/487,459.
Application 18/487,459 is a division of application No. 18/072,836, filed on Dec. 1, 2022, granted, now 11,860,185.
Application 18/072,836 is a continuation of application No. 17/643,603, filed on Dec. 10, 2021, granted, now 11,549,962, issued on Jan. 10, 2023.
Application 17/643,603 is a continuation of application No. 17/197,121, filed on Mar. 10, 2021, granted, now 11,231,442, issued on Jan. 25, 2022.
Application 17/197,121 is a continuation of application No. 16/295,008, filed on Mar. 7, 2019, granted, now 10,976,342, issued on Apr. 13, 2021.
Claims priority of application No. 2018-042387 (JP), filed on Mar. 8, 2018.
Prior Publication US 2024/0044936 A1, Feb. 8, 2024
Int. Cl. G01P 15/18 (2013.01); G01C 21/16 (2006.01); G01C 21/18 (2006.01); G01S 19/47 (2010.01); G01S 19/49 (2010.01)
CPC G01P 15/18 (2013.01) [G01C 21/165 (2013.01); G01C 21/18 (2013.01); G01S 19/47 (2013.01); G01S 19/49 (2013.01); B81B 2201/0235 (2013.01); B81B 2201/0242 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A positioning system which is equipped on a vehicle comprising:
a satellite positioning receiver that receives a satellite signal transmitted from a satellite;
an acquisition unit that acquires position information based on the received satellite signal;
a multi-axis inertial sensor that accommodates a three-axis angular velocity sensor which detects angular velocity around an X-axis, angular velocity around a Y-axis, and angular velocity around a Z-axis, the X-axis, the Y-axis, and the Z-axis being orthogonal to each other;
a gyro sensor that detects the angular velocity around the Z-axis;
a computation unit that computes an attitude of the vehicle based on:
the angular velocity around the X-axis and the angular velocity around the Y-axis detected by the multi-axis inertial sensor, and
the angular velocity around the Z-axis detected by the gyro sensor, and
a calculation unit that calculates a position of the vehicle by correcting the position information based on the calculated attitude.