Asahi Kasei Microdevices Corporation

Asahi Kasei Emd Corporation

Yoshitaka Moriyasu

Takenobu Nakamura

Shigeki Okatake

Masanori Masuda

Makoto Kataoka

Naohiro Kuze

Kazuhiro Nagase

Koichiro Ueno

A magnetic field measuring apparatus is provided including: a magnetic sensor array configured so that a plurality of magnetic sensor cells including a plurality of magnetic sensors each having a magnetoresistive element and magnetic flux concentrators arranged on both ends of the magnetoresistive element are three-dimensionally arranged and capable of detecting a magnetic field in three axial directions; a magnetic field acquiring section configured to acquire measurement data measured by the magnetic sensor array; and a signal space separating section configured to perform signal separation on a spatial distribution of a magnetic field indicated by the measurement data, based on basis vectors calculated from orthonormal functions and a position and magnetic sensitivity of each magnetic sensor of the magnetic sensor array.

Magnetic field measuring apparatus, magnetic field measuring method, and recording medium storing magnetic field measuring program

Provided is a magnetic field measuring apparatus, comprising: a magnetic sensor array including a plurality of magnetic sensor cells, which is capable of detecting an input magnetic field in three axial directions at a plurality of locations in three-dimensional space; a measurement data acquiring section for acquiring measurement data based on the input magnetic field including a to-be-measured magnetic field; and a measurement data computing section for calibrating the measurement data acquired by the measurement data acquiring section; wherein the measurement data computing section comprises: an indicator calculation section for calculating an indicator illustrating calibration accuracy of the measurement data computing section; and a failure determination section for determining a failure based on the indicator calculated by the indicator calculation section; wherein each of the plurality of magnetic sensor cells comprises: a magnetic sensor; and an output section for outputting a output signal.

Magnetic field measuring apparatus

Provided is a magnetic field detection device capable of detecting with a higher accuracy. A magnetic field detection deviceincludes a first magnetic sensor unit, a second magnetic sensor unit, a third magnetic sensor unitand a fourth magnetic sensor unit. The first and the second magnetic sensor units are disposed side by side so that a sensitive axis directions of the first and the second magnetic sensor units are oriented in a first direction, and the third and the fourth magnetic sensor units are disposed side by side so that the sensitive axis directions of the third and the fourth magnetic sensor units are oriented in a second direction. The first and the second magnetic sensor units are disposed between planes each including a center of gravity of each of the third and the fourth magnetic sensor units and defining the second direction as a normal direction, and the third and the fourth magnetic sensor units are disposed between planes each including a center of gravity of each of the first and the second magnetic sensor units and defining the first direction as a normal direction.

Magnetic field detection device

An infrared sensor IC and an infrared sensor, which are extremely small and are not easily affected by electromagnetic noise and thermal fluctuation, and a manufacturing method thereof are provided. A compound semiconductor that has a small device resistance and a large electron mobility is used for a sensor (), and then, the compound semiconductor sensor () and an integrated circuit (), which processes an electrical signal output by the compound semiconductor sensor () and performs an operation, are arranged in a single package using hybrid formation. In this manner, an infrared sensor IC that can be operated at room temperature can be provided by a microminiature and simple package that is not conventionally produced.

Growing community of inventors

Tokyo, Japan

Yoshitaka Moriyasu