Aichi Steel Corporation

Aichi Micro Intelligent Corporation

Yoshiaki Koutani

Michiharu Yamamoto

Yoshinobu Honkura

Masaki Mori

Kazumasa Sumi

Eiji Kako

Naoki Ishikawa

Takumi Asano

Kouei Genba

A magneto impedance sensor element with electromagnetic coil comprised of: a terminal board on which an extended groove which extends in one direction has been formed; an electromagnetic coil, made with one part of the coil formed in a spiral shape inside the extended groove in the terminal board, and joined to each tip of that coil the other part of the coil placed across the top of the groove; insulating material placed in the extended groove on the terminal board; and a magnetic sensitive body inserted within the insulating material, to which either high frequency or pulse electic current is applied. When either high frequency or pulse electrical current is applied to the magnetic sensitive body, voltage is output from the above electromagnetic coil in response to the intensity of the external magnetic field which is generated in the electromagnetic coil.

Magnet with electromagnetic coil/impedance/sensor element

An accelerometer for measuring the displacement of a magnet body using magnetic detecting elements is provided, the accelerometer having superior measurement accuracy by suppressing influence of a peripheral magnetic field. The accelerometer has detecting units each having a cantilever which is elastically deformed so as to rotate around a fixed end thereof, a magnet body provided at a free end of the cantilever, and a magnetic detecting head portion disposed outside the rotation region of the cantilever. In order to correct detection signals output from the magnetic detecting head portions, the accelerometer has peripheral magnetic field detecting portions for measuring a peripheral magnetic field acting on the magnetic detecting head portions and the magnet bodies.

Accelerometer with cantilever and magnetic field detector

A magnetic sensor includes a magnetic sensitive memberincluding an amorphous wire, a detection coilwound around the magnetic sensitive member, and a sample-and-hold circuit for detecting a voltage induced in the amorphous wirewhen a pulse current is interrupted. The sample-and-hold circuit has a sample-and-hold unit Band a delay circuit. The sample-and-hold unit Bincludes an electronic switch S, a capacitor C, a resistor R, a resistor R, and a high-input amplifier A. The delay circuit includes a resistor Rconnected to a control terminal of the electronic switch Sand a capacitor C

Magnetic sensor

The present invention is a two-dimensional magnetic sensor having a first magneto-impedance sensor element including a first magneto-sensitive element and a first electro-magnetic coil which is wound around said first magneto-sensitive element; a second magneto-impedance sensor element including a second magneto-sensitive element and a second electro-magnetic coil which is wound around said second magneto-sensitive element; and an integrated circuit including an oscillator, a current switching element, a voltage detector, and an amplifier.

Growing community of inventors

Tokai, Japan

Yoshiaki Koutani