AMR Sensors FAQQSelecting sensors

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

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