AMR Sensors (Magnetic Sensors)Usages and Applications of Position Detection

Advantageous features include their small size, high applicability, high impact resistance, and long life expectancy. Small and high precision AMR sensors can be put to good use with industrial equipment like cylinder switches.

[Application examples]

Home appliances, textile machinery, hydraulics, pneumatic machinery, industrial articulated robots, waterproofing, stain resistance, hidden and compact switches, etc.

[Reasons for excellent versatility]

• There is no need to drill a hole for the switch in the housing, so it is easy to make a water-resistant structure
• Malfunctions due to the adhesion of foreign matter are less likely to occur
• Switching is possible by bringing the magnet closer, so there is no problem even if the surface is flat
• It is possible to turn on/off even with a short stroke of about a few mm depending on the arrangement of the magnets and sensors

Adding 2 modules to each end of the cylinders of automated machinery, such as robotic arms and chip mounters used in factories, can allow for accurate detection.

Video depicting the cylinder position sensor

A video giving an example of AMR sensor (magnetic sensor) application on pneumatic cylinders. See how position detection can be used with pneumatic cylinders and observe the output of an AMR sensor (magnetic sensor).

It is possible to detect the position (open/closed) of the latch (lock).

Use is possible even as a water-resistant switch by placing the AMR sensor in the board in the housing and then sealing the entire housing and ensuring that the magnets are water resistant. Simpler structure compared to mechanical switches.

This is an example of a sliding switch. It is possible to turn on/off the switch with a shorter stroke than other types of magnetic sensors because of the anisotropy features of the AMR sensor.