Patent ID: 9027428
Filing Date: 2015-05-12
Classification: F16H,G01B,Y10T

Abstract:
1. A non-contact sensor that detects a movement amount of a detection subject, the non-contact sensor comprising: a substrate including a groove; a plurality of pattern coils including two opposing pattern coils arranged on opposite sides of the groove; a detected object connected to the detection subject and moved in cooperation with the detection subject along the groove, wherein movement of the detected object changes a degree of magnetic coupling between the two pattern coils; and a signal processing circuit that calculates a movement amount of the detected object based on an output value provided from the pattern coils, wherein the substrate is a board including a front surface and a rear surface, each of the pattern coils includes a plurality of folded portions is formed by the coupled ones of the front conductive strips, the vias, and the rear conductive strips.