ROTATION DETECTION DEVICE

• Main Authors: KOBAYASHI, Atsushi, MAKITA, Michihiro
• Format: Patent
• Language: English
• Published: 04.04.2019
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; MECHANICAL ENGINEERING; PHYSICS; TARIFF METERING APPARATUS; TESTING; WEAPONS

A rotation detection device includes a detection unit and a determination circuit unit. A first magnetoresistive element pair, a second magnetoresistive element pair and a third magnetoresistive element pair are located to be farther from the end part than a fourth magnetoresistive element pair and a fifth magnetoresistive element pair are. The second magnetoresistive element pair is located in a region surrounded by the first magnetoresistive element pair, the third magnetoresistive element pair, the fourth magnetoresistive element pair and the fifth magnetoresistive element pair. The detection unit is to generate a main signal based on outputs of the first magnetoresistive element pair, the second magnetoresistive element pair and the third magnetoresistive element pair and to generate a sub signal based on outputs of the fourth magnetoresistive element pair and the fifth magnetoresistive element pair.