| 摘要 |
PROBLEM TO BE SOLVED: To provide a displacement detector for improving accuracy for detecting displacement in a direction of a displacement body to be detected, by correcting a gap between a detection coil and the displacement body.SOLUTION: The displacement detector is provided with: a first resonance circuit 2 which includes a first detection coil L1 where an electric or magnetic characteristic changes as the direction of a displacement body M1 to be detected changes; a second resonance circuit 2 which includes a second detection coil L2 for correcting influences by a position relation between the displacement body M1 and the first detection coil L1; an oscillation circuit 3 connected to either the resonance circuits 1 or 2; and a signal processing circuit 5 for operating the displacement of the displacement body M1 according to characteristic values of the respective coils L1, L2. The signal processing circuit 5 operates the displacement on the basis of a characteristic value of the first detection coil L1 and corrects the displacement on the basis of conductance G2 of the second detection coil L2. |
