AMR Sensors (Magnetic Sensors)Fundamentals of magnetic sensors: detection examples

Open/close and position detection examples

When the sensor and magnet are on the same plane:

When sensor and magnet are not on the same plane:
(Sensor center is on same axis)

When the sensor and magnet are not on the same plane:
(Perpendicular to magnetization direction)
(Sensor center is on same axis)

For details on the optimum magnet size and positional relationship, see the Simulation Tool.

Rotation detection examples: Locations on same plane

Detection example 1: Rectangular magnet x 1 pc

AMR sensor output image:
Detects 4-part resolution by single rotation

Detection example 2: Rectangular magnet x 4 pcs

AMR sensor output image:
Detects 4-part resolution by single rotation