Mitsubishi Electric Corporation

Rokuzo Hara

Tomonori Kimura

Yasuhiro Nishioka

Koji Ibata

Shinichi Morita

Hisakazu Maniwa

An ultrasound probe includes: a metal case including a bottom wall portion having a vibration surface, and a side wall portion connected to the bottom wall portion; a coil mounted on one surface of the side wall portion; and a magnet mounted in such a way as to sandwich the coil between the magnet and the one surface of the side wall portion, in which the coil causes an eddy current to occur in the one surface of the side wall portion, and causes the bottom wall portion to vibrate, by using a Lorentz force occurring in the side wall portion because of the interaction between the eddy current and a magnetic field generated by the magnet.

Ultrasound probe

A test object includes a sensor housing for vibrating together with a test object in synchronism with vibration of the test object; a piezoelectric substrate for vibrating together with the sensor housing in synchronism with vibration of the sensor housing, where a first interdigital electrode, a first terminal, a second interdigital electrode, and a second terminal are disposed on a first surface of the piezoelectric substrate, and the piezoelectric substrate is disposed inside the sensor housing to be fixed to the sensor housing; an amplifier for receiving a signal output from the second terminal as an input signal, amplifying the received input signal, and transmitting the input signal after the amplification to the first terminal as an output signal; a deformable layer being elastic and having a first surface adhered to a second surface of the piezoelectric substrate; and a heavy object having a first surface adhered to a second surface of the deformable layer.

Vibration sensor

Disclosed is a vibration sensor including a piezoelectric substrate, a first electrode and a second electrode that are arranged on the piezoelectric substrate, an amplifier electrically connected between the first electrode and the second electrode, and a solid medium having a first surface part in contact with the piezoelectric substrate, and a second surface part disposed opposite to the first surface part and used for contact with a target substance, the solid medium having a sound speed lower than the phase speed of a plate wave in the piezoelectric substrate, in which an oscillation loop includes the piezoelectric substrate, the first electrode, the second electrode, the amplifier, and the solid medium, and a vibration of the target substance is detected as a result of variation in the loop length of the oscillation loop in response to the vibration of the target substance.

Vibration sensor and vibration detection device

In a calibration device, a calibration matrix calculation processing part estimates a calibration matrix by using an orthogonal vector stored in an orthogonal vector storage part and an array mode vector stored in an array mode vector storage part. A calibration matrix output part transmits the calibration matrix computed by the calibration matrix calculation processing part to an unknown parameter estimation device.

Growing community of inventors

Tokyo, Japan

Rokuzo Hara