Panasonic Intellectual Property Management Co., Ltd.

Masahiko Ohbayashi

Kazuhiro Kanda

Yuki Ohyama

Masataka Tagawa

Hideyuki Tanigawa

Koji Sakai

Hiroaki Ishida

Kazuhiro Nomura

Takaaki Ogawa

Takafumi Okudo

Hiroki Yoshino

Shinichi Kishimoto

Motoki Ogata

A magnetic sensor according to the present disclosure includes a plurality of magnetoresistance pattern portions that forms a bridge circuit. Each of the plurality of magnetoresistance pattern portions includes a first resistance portion and a second resistance portion that are connected together in series. In each of the plurality of magnetoresistance pattern portions, the first resistance portion and the second resistance portion are spaced from each other in a first direction by a distance that is one half as long as a cycle of magnetization of a detection target. In each of the plurality of magnetoresistance pattern portions, the first resistance portion and the second resistance portion are symmetric to each other with respect to a line when viewed in plan in a third direction.

Magnetic sensor

In a magnetic sensor according to the present disclosure, each of a plurality of magnetoresistance pattern portions includes a first resistance portion and a second resistance portion that are connected together in series. One of two resistance portions connects a first wiring portion and a second wiring portion of a first wiring pattern portion. The other of the two resistance portions connects a first wiring portion and a second wiring portion of a second wiring pattern portion. The two resistance portions are included in the plurality of first resistance portions and the plurality of second resistance portions and located at both ends in a first direction.

A component sensor detects a fluid component with improved accuracy. The component sensor includes tube () including tube side () that permits inflow of fluid (), substrate () provided to tube (), first protrusion () provided at one end of substrate (), second protrusion () provided at another end of substrate (), light emitter () that emits infrared light () toward first protrusion (), and light receiver () that receives infrared light (). Infrared light () entering substrate () through first protrusion () experiences total reflection inside substrate () and exits through second protrusion () to head for light receiver (). Tube side () includes two through holes () that each extend between an interior and an exterior of tube (). Substrate () is inserted into through holes () with a central part of substrate () being inside tube () and with the one end and the other end of substrate () that are respectively provided with first protrusion () and second protrusion () being outside tube ().

Component sensor

A weight sensor includes a deformable body, a first strain resistor provided on an outer side surface of the deformable body, and a pressing member applying a load to the deformable body. The deformable body includes a tubular portion having a tubular shape extending along a center axis and surrounding the center axis, and a projection projecting from an inner surface of the tubular portion. The pressing member moves along the center axis so as to apply a moment to the tubular portion. The resistances of the strain resistors change greatly, allowing the weight sensor to measure a load with high sensitivity.

Tubular sensor with an inner projection

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Osaka, Japan

Masahiko Ohbayashi