US 12,130,302 B2
Inertial sensor module
Ryohei Ozawa, Chino (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 12, 2022, as Appl. No. 17/942,470.
Claims priority of application No. 2021-149261 (JP), filed on Sep. 14, 2021.
Prior Publication US 2023/0079036 A1, Mar. 16, 2023
Int. Cl. G01P 15/08 (2006.01); G01C 19/5776 (2012.01); G01P 1/00 (2006.01); G01P 1/02 (2006.01); G01P 15/14 (2013.01); G01P 15/18 (2013.01)
CPC G01P 15/08 (2013.01) [G01C 19/5776 (2013.01); G01P 1/006 (2013.01); G01P 1/023 (2013.01); G01P 15/0802 (2013.01); G01P 15/14 (2013.01); G01P 15/18 (2013.01); G01P 2015/0865 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An inertial sensor module comprising:
a first inertial sensor having a first axis as a detection axis;
a second inertial sensor having the first axis as a detection axis; and
an operation circuit, wherein
detection accuracy of the first inertial sensor is higher than detection accuracy of the second inertial sensor, and
the operation circuit receives a first detection signal of the first axis output from the first inertial sensor and a second detection signal of the first axis output from the second inertial sensor, and selects and outputs either a first output signal based on the first detection signal of the first axis output from the first inertial sensor or a second output signal based on the second detection signal of the first axis output from the second inertial sensor, wherein
the first inertial sensor and the second inertial sensor detect a same physical quantity, and
the operation circuit selects and outputs either the first output signal or the second output signal in accordance with a range of motion acting on the first axis of the first inertial sensor and the second inertial sensor such that the operation circuit selects and outputs the first output signal when a magnitude of the motion is within a predetermined range, and selects and outputs the second output signal when the magnitude of the motion is not within the predetermined range.