Clarify the positional relationship with the AMR sensor and movement of the
magnet at the
location where the AMR sensor will be installed.
Detection methods can be roughly divided into the following.
- Open/close and position detection: Distance between the magnet and AMR sensor changes
(Strength of magnetic force lines)
- Rotation detection: Direction of magnet changes (Direction of magnetic force lines)
For suitable AMR sensor candidates based on the positional relationship
with the AMR sensor and
movement of the magnet, see the Selection Guide.
From these candidates, select the supply voltage, response frequency (high frequency type for
magnets with quick movements), and current consumption (low current consumption type for battery
driving).
Use the Simulation Tool to determine whether the sensor turns on and off
based on the positional
relationship with the AMR sensor and magnet. Although the Simulation Tool cannot cover all
operation patterns, it includes a manual on how to use the Simulation Tool and application
examples.
The Simulation Tool can provide a simplified estimate of the ON/OFF level based on the
positional relationship between the AMR sensor and any rectangular magnet.
(In the Simulation Tool, the position is an estimate only. Be sure to always check in the actual
device.)
AMR Simulation Tool