Honeywell SMART Rotary Position Sensor

The Honeywell SMART Rotary Position Sensor is a non-contacting sensing solution for absolute position sensing with enhanced accuracy. It senses the position of a magnet relative to the sensor in a range of 0° to 360°. Honeywell uses a patented combination of an ASIC (Application Specific Integrated Circuit) and an array of MR sensors to reliably determine the position of a magnet collar attached to a rotating object.

 

The SMART Position Sensor, Rotary Configuration, fits on a 25,4 mm [1 in] shaft. A mounting tool fixture (purchased separately) provides repeatable installation.

 

Why is the SMART Position Sensor smart?

 

SMART means that this is a sensor that can essentially think for itself. SMART Position Sensors provide a self-diagnostics feature and data gathering for enhanced reliability and closed-loop feedback control.

 

These devices use a patented combination of an ASIC (Application-Specific Integrated Circuit) and an array of MR (magnetoresistive) sensors to accurately and reliably determine the position of a magnet attached to a moving object so that the object’s position can be determined or controlled.

 

The MR array measures the output of the MR sensors mounted along the magnet’s direction of travel. The output and the MR sensor sequence determine the nearest pair of MR sensors to the center of the magnet location. The output of these two MR sensors is then used to determine the position of the magnet between them.