POSITION SENSOR

• Main Authors: OHMI, Tetsuya, SASAKI, Akito, KOBAYASHI, Atsushi, KITAURA, Yasuhiro, MAKITA, Michihiro
• Format: Patent
• Language: English
• Published: 05.03.2020
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; LIGHTING; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; MECHANICAL ENGINEERING; PHYSICS; TARIFF METERING APPARATUS; TESTING; THERMAL INSULATION IN GENERAL; WEAPONS

A position sensor includes a detector (122) and a signal processor (123). The detector generates detection signals, which have a distinct phase difference and which respectively correspond to ranges aligned in one direction along a movement direction of a detection target (200, 202, 203) having a magnetic material, based on a change in a magnetic field received from the detection target along with a movement of the detection target. The signal processor acquires the detection signals from the detector, compares the detection signals with a threshold value, and specifies a position of the detection target as a position covered by one of the ranges based on a combination of magnitude relations of the detection signals and the threshold value.