| 摘要 |
PROBLEM TO BE SOLVED: To provide a revolution quantity measuring device capable of accurately measuring the revolution quantity in spite of being simplified in constitution. SOLUTION: The device is constituted by being provided with a magnet disk 3 installed with a specific inclination of a revolution axis, a pair of magnetic sensors 4 and 5 arranged with a specific angle interval concerning the axis center of the revolution axis in the plane perpendicularly crossing the revolution axis 1, a voltage change detection means detecting the change of magnetic flux penetrating the magnetic sensors 4 and 5 as the change of voltage and a revolution quantity calculation means calculating the revolution quantity such as revolution position and revolution times based on the voltage change detected by the voltage change detection means.
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