| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a detector capable of downsizing a physique, and improving detection accuracy.SOLUTION: A detector 1 is equipped with a first detecting portion 11 on an N-pole side of a magnet 10, and a second detecting portion 21 on an S-pole side. The first detecting portion 11 has a first core 12 and a first coil 14 wound around the first core 12, and the second detecting portion 21 has a second core 22 and a second coil 24 wound around the second core 22. A winding direction of the first coil 14 and a winding direction of the second coil 24 are opposed to each other, and wiring 141 taken out from the magnet side of the first coil 14 and wiring 241 taken out from the magnet side of the second coil 24 are connected in series. Therefore, the detector 1 can cancel the output of the first coil 14 and the output of the second coil 24 by a disturbance magnetic field applied on that, and detect the output of the first coil 14 generated by a magnetic field of an eddy current of a blade 2 moving on the opposite magnet side of the first detecting portion 11.</p> |
