Seiko Epson Corporation

Fumikazu Otani

Taketo Chino

Nobuyuki Imai

Yoshikuni Saito

An inertial measurement unit includes an angular velocity sensor and an acceleration sensor that output inertial information, a storage portion that stores a plurality of correction parameters related to a range of values of the inertial information, a parameter control portion that selects a selection correction parameter from the plurality of correction parameters, and a correction calculation portion that corrects the inertial information using the selection correction parameter.

Inertial measurement unit

An inertial measurement device includes: an inertial sensor; a first signal processing circuit; a second signal processing circuit; a first communication unit and a second communication unit configured to communicate with an external device; and a mode selection unit configured to select a processing mode from a plurality of modes including a first processing mode and a second processing mode. The first processing mode is a mode in which the inertial measurement device is used alone and outputs a signal processed by the first signal processing circuit from the first communication unit, and the second processing mode is a mode in which the inertial measurement device is used in a state of being coupled to another inertial measurement device, a first signal processed by the first signal processing circuit and a second signal from another inertial measurement device received from the second communication unit are subjected to a calculation process by the second signal processing circuit, and a signal subjected to the calculation process is output from the first communication unit.

Inertial measurement device and inertial measurement system

A posture estimation device estimates a posture of a movable body based on acceleration information based on a posture change of the movable body and angular velocity information based on the posture change of the movable body. The posture estimation device includes a storage unit that stores the acceleration information, the angular velocity information, and a plurality of posture parameters related to a movement of the movable body, a parameter control unit that selects a selection posture parameter from the plurality of posture parameters, and a posture calculation unit that estimates the posture of the movable body by using the acceleration information, the angular velocity information, and the selection posture parameter.

Posture estimation device, sensor module, measurement system, moving object, and posture estimation method

The sensor module includes a plurality of inertial measurement units having an angular velocity sensor device, an acceleration sensor device, and a signal processing circuit configured to process an output signal from the angular velocity sensor device and the acceleration sensor device, and an oscillation circuit configured to generate a synchronizing clock which synchronizes the plurality of inertial measurement units. Further, the oscillation circuit is provided to one of the inertial measurement units.

Sensor module and measurement system

A sensor module includes a first sensor device that outputs first measurement data from a first measurement circuit receiving a signal from a first sensor element and performing a measurement process, a second sensor device that outputs a second measurement circuit receiving a signal from a second sensor element and performing a measurement process, and a microcontroller that receives the first measurement data and the second measurement data, in which the first sensor device includes a first terminal that is used for input of an external synchronization signal or a synchronization signal which is a signal based on the external synchronization signal, and input or output of a communication signal, and the second sensor device includes a second terminal that is used for input of the synchronization signal, and input or output of the communication signal.

Sensor module, electronic apparatus, and vehicle

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.

A sensor module includes a first sensor device, a second sensor device, and a microcontroller. The first sensor device includes a first synchronization terminal to which an external synchronization signal or a synchronization signal which is a signal based on the external synchronization signal is input, a first interface outputs first measurement data to the microcontroller on the basis of the synchronization signal which is input to the first synchronization terminal, the second sensor device includes a second synchronization terminal to which the synchronization signal is input, and a second interface outputs second measurement data to the microcontroller on the basis of the synchronization signal which is input to the second synchronization terminal.

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Matsumoto, Japan

Fumikazu Otani