Maxell, Ltd.

Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Yuhua Zhang

Akihiko Kandori

Yuko Sano

Mitsunobu Watanabe

Shinya Kajiyama

Shigemitsu Ando

Mitsuo Okimoto

Masayoshi Ishibashi

Masahide Hayashi

Heewon Jeong

Kiyoko Yamanaka

Kanako Esaki

Joan Giner

An object of the present invention is to provide a technique of quantitatively measuring physical properties including both viscosity and elasticity. A viscoelasticity measurement system includes a measurement apparatus, a processor, and a display apparatus. The measurement apparatus includes a movable unit continuously pressed against a measurement object, a first sensor outputting acceleration information corresponding to an acceleration of pressing-directional movement of a contact portion of the movable unit with respect to the measurement object, and a second sensor outputting reactive force information corresponding to a reactive force applied to the contact portion of the movable unit with respect to the measurement object. The processor calculates first information on an elasticity component of the measurement object and second information on a viscosity component of the measurement object based on the acceleration information and the reactive force information. The display apparatus displays the first information and the second information.

Viscoelasticity calculation system and viscoelasticity measurement method

An object of the present invention is to provide a durometer enabling a contact portion in contact with an object to perform smooth piston motion. The durometer includes a main body unit including a movable unit pressed continuously against an object to be measured, a first sensor outputting acceleration information corresponding to an acceleration of movement of a contact part of the object to be measured in contact with the movable unit in a pressing direction, a second sensor outputting reactive force information corresponding to a reactive force at the contact part of the object to be measured in contact with the movable unit, a motor, a crank mechanism driven by the motor and causing the main body unit and the movable unit to perform piston motion, and at least one buffering member disposed on a periphery of the main body unit.

Durometer

An object of the present invention is to provide a technique of quantitatively measuring physical properties including both of viscosity and elasticity. A viscoelasticity measurement system includes a measurement apparatus, a processor, and a display apparatus. The measurement apparatus includes a movable unit continuously pressed against a measurement object, a first sensor outputting acceleration information corresponding to an acceleration of pressing-directional movement of a contact portion of the movable unit with respect to the measurement object, and a second sensor outputting reactive force information corresponding to a reactive force applied to the contact portion of the movable unit with respect to the measurement object. The processor calculates first information on an elasticity component of the measurement object and second information on a viscosity component of the measurement object based on the acceleration information and the reactive force information. The display apparatus displays the first information and the second information.

The present invention addresses the problem of limiting power consumption and radio wave interference when assessing the movements of multiple sites of a living body. The present invention is a movement function assessment system provided with: a movement function measurement apparatus for calculating movement data on the basis of the relative distances of pairs of transmission coils and reception coils attached to movable portions of a living body; and an assessment apparatus for assessing the movement function of the living body on the basis of the movement data received from the movement function measurement apparatus. A control unit of the movement function measurement apparatus performs the switching of the multiple transmission coils by a switching unit (1) and the switching of the multiple reception coils by a switching unit (2) so that the paired transmission coils and reception coils are operated sequentially.

Movement function assessment system and movement function measurement apparatus

Provided is a gyroscope including: a first inertial body that is displaceable in a first direction and a second direction perpendicular to the first direction; a second inertial body that is displaceable in the first direction and the second direction; a third inertial body that is displaceable in the first direction and the second direction; a fourth inertial body that is displaceable in the first direction and the second direction; a first connection unit that supports the first inertial body; a second connection unit that supports the second inertial body; a third connection unit that supports the third inertial body; a fourth connection unit that supports the fourth inertial body; and a connection body that is provided among the first inertial body, the second inertial body, the third inertial body, and the fourth inertial body and connects the first inertial body, the second inertial body, the third inertial body, and the fourth inertial body.

Vibratory gyroscope including a plurality of inertial bodies

A movable part rotates about a rotation axis, which passes through a support, when an inertial force in a detecting direction is applied to an inertial sensor. The movable part includes a first region and a second region displaced in a direction opposite to a direction of the first region when the inertial force is applied. A second substrate includes first and second detection electrodes opposed to the first and second regions, respectively. The first detection electrode and the second detection electrode are provided symmetrically with respect to the rotation axis. A cavity is provided symmetrically with respect to the rotation axis. In a direction perpendicular to the detecting direction and a direction in which the rotation axis extends, a length from the rotation axis to an end of the first region and a length from the rotation axis to an end of the second region are different.

Growing community of inventors

Tokyo, Japan

Yuhua Zhang