# US 12,007,407 B2 · Sensor module and measurement system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,007,407 B2 - Document ID: US12007407B2 - Status: Granted - Kind: B2 - Application number: 17/703,216 - Filed: 2022-03-24 - Published: 2022-09-29 - Granted: 2024-06-11 - Earliest claimed: 2021-03-29 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Fumikazu Otani - Web page: https://patentgrep.com/patent/US12007407B2 ## CPC - G01P 15/08: with conversion into electric or magnetic values - G01C 21/16: by integrating acceleration or speed, i.e. inertial navigation - G01P 3/00: Measuring linear or angular speed; Measuring differences of linear or angular speeds (G01P5/00 - G01P11/00 take precedence; {direction and speed indication G01P13/045}; counting mechanisms G06M) - G01P 15/18: in two or more dimensions - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) ## Abstract A sensor module includes: an inertial sensor; and a processing circuit processing an output signal from the inertial sensor. The processing circuit varies processing of the output signal according to a sampling period for acquiring the output signal. The processing circuit may change the sampling period for acquiring the output signal according to a content of processing of the output signal. ## Claims ### Claim 1 A sensor module comprising: a plurality of inertial sensors; and a processing circuit selecting one of a plurality of signal processing modes as a selected signal processing mode, and processing output signals from the plurality of inertial sensors according to the selected signal processing mode, the processing circuit selecting the one of the plurality of signal processing modes as the selected signal processing mode based on a length of a sampling period for acquiring the output signals, wherein the plurality of signal processing modes includes a signal processing mode having an angular velocity mode in which data from an angular velocity sensor device, as an inertial sensor of the plurality of inertial sensors, is processed, and an acceleration mode in which data from an acceleration sensor device, as an inertial sensor of the plurality of inertial sensors, is processed, and, in said signal processing mode, the processing circuit selects either of the angular velocity mode or the acceleration mode such that one of the data associated with the angular velocity mode and the acceleration mode is omitted from processing. ### Claim 2 (depends on 1) The sensor module according to claim 1, wherein the processing circuit selects the one of the plurality of signal processing modes as the selected signal processing mode so that a number of processing steps for the output signals becomes smaller as the length of the sampling period becomes shorter. ### Claim 3 (depends on 1) The sensor module according to claim 1, wherein the processing circuit has a plurality of signal processing units performing different types of processing from each other on the output signals, and selects the one of the plurality of signal processing modes as the selected signal processing mode so that the output signals are processed by more of the signal processing units as the length of the sampling period becomes longer. ### Claim 4 (depends on 1) The sensor module according to claim 1, wherein the processing circuit selects the one of the plurality of signal processing modes as the selected signal processing mode so that the output signals are processed from more of the plurality of inertial sensors as the length of the sampling period becomes longer. ### Claim 5 (depends on 1) A measurement system comprising: the sensor module according to claim 1; and a host device electrically coupled to the sensor module.