Seiko Epson Corporation

Yasushi Yoshikawa

Kenta Sato

An inertial measurement unit includes: a sensor unit having at least one inertial sensor; a display unit performing a display based on detection information from the inertial sensor; and a mode changeover switch. The mode changeover switch changes a display mode of the display unit.

Inertial measurement unit

A sensor module that includes an inertial sensor and an abnormality determination unit that determines that the inertial sensor is abnormal when a structural resonance frequency at the first time point and a structural resonance frequency at the second time point are separated by a predetermined value or more.

Sensor module and sensor system with improved abnormality detection and abnormality determination method for an inertial sensor

An inertial measurement unit includes: a sensor unit having at least one inertial sensor; a substrate where at least one of a processing unit performing processing based on detection information from the inertial sensor and a display unit performing a display based on the detection information is provided; and at least one fixing member removably fixing the sensor unit and the substrate together.

Inertial measurement unit having a sensor unit that is detachable from a substrate

A temperature correction device includes a data acquisition portion that acquires physical quantity data based on an output signal from a physical quantity sensor and temperature data based on an output signal from a temperature sensor, a physical quantity measurement portion that measures a physical quantity detected by the physical quantity sensor based on the physical quantity data, a correction value calculation portion that calculates a correction value based on a product of a temperature gradient value for a first period from a first time to a second time obtained based on the temperature data and a correction coefficient value, and a correction portion that corrects a measurement value of the physical quantity measured by the physical quantity measurement portion based on the correction value.

Temperature correction device, sensor module, and temperature correction method

A sensor unit includes a physical quantity sensor, a connecter to be coupled to the outside, a board on which the physical quantity sensor and the connecter are installed, and a container accommodating the board. The board is provided with a first region in which the connecter is installed, a second region in which the physical quantity sensor is installed, and a coupling region disposed between the first and second regions and having a sectional area Sthat is smaller than a sectional area Sof the first region and a sectional area Sof the second region in a sectional view as seen in a direction orthogonal to a direction in which the first region and the second region are arranged, and a region in the second region of the board on the coupling region side is attached to the container via a fixation member.

Sensor unit and structural health monitoring

A sensor unit includes acceleration sensors as physical quantity sensors, a control IC as a processor electrically coupled to the acceleration sensors, a circuit board as a board on which the acceleration sensors and the control IC are installed, and a container accommodating the circuit board. The acceleration sensors and the control IC are disposed on the circuit board such that the acceleration sensors and the control IC do not overlap each other in a plan view.

An electronic circuit board includes a substrate having a multilayer structure including a ground layer, has at least one configuration in which, in a ground layer closest to a signal terminal of an oscillator, a region overlapping a signal terminal in a plan view is a non-forming region of a ground electrode, in a ground layer closest to a first wiring connecting the signal terminal of the oscillator and an input portion of an amplifier, a region overlapping the first wiring in the plan view is a non-forming region of a ground electrode, and in a ground layer closest to a second wiring connecting the signal terminal of the oscillator and an output portion of the amplifier, a region overlapping the second wiring in the plan view is a non-forming region of a ground electrode.

Electronic circuit board, acceleration sensor, inclinometer, inertial navigation device, structure monitoring device, and vehicle

A circuit arrangement performs communication with an external device including a second sensor detecting a given event, includes a sensor input unit that processes input from a first sensor detecting the given event and a communication control unit that controls operation of a wireless communication unit, and determines a communication time based on an output of the first sensor and performs communication with the external device via the wireless communication unit according to the communication time.

Growing community of inventors

Chino, Japan

Yasushi Yoshikawa