Sensor Products has introduced the ASET sensor, which has been designed to measure interfacial stresses in real time.
ASET is a thin profile magnetic resistive ink sensor element that is said to reveal the surface area of contact and displacement of contact area levels.
The operating principle of the ASET, which is a hybrid of a position and displacement sensor, is the ability to treat the entire sensing element as a linear potentiometer. The typical linear format design of the ASET sensor enables the entire surface contact area to be determined as well as sensing position along the line.
Unlike resistive ink sensors and piezo sensors, the ASET does not require complicated calibration. It is a rugged, durable device that can withstand repeated applications of contact and impact under a wide range of environmental conditions.
The sensor is said to reveal both interpolated force and position of an object (or object dimensions) and can sense the position and interpolated force – by virtue of surface area of contact on a deformable mass – of a single-or multiple-contact actuator.
The ASET sensor system relies not on a reading of electrical resistance to determine the shunting level (percentage of circuit surface area that is shorted), but rather a ratio of the starting resistance to the final resistance.
Potential applications for this sensor system include checking roll pressure in real time, and in others where it would be embedded into smart structures or objects. It could serve any application requiring a ball or ball joint, where the relative position and force being applied needs to be quantified.
Additionally, the sensor could be used where either a solid or semi-solid object is moving in three-dimensional space and a need exists to monitor precisely where and when a component of the object is striking, mating or changing dimension due to compression or impact with another solid surface.