Touchless working principle for medical sensors.
Superior to other sensors technologies in terms of cost and convenience, our vertical hall effect sensors are the perfect replacement to other technologies such as resolvers, capacitive displacement sensors,.
Measurement of linear position using variation of magnetic field amplitude induced by the displacement of a moving magnet has been intensively developed over the last fifteen years. However, these solutions have limits in terms of angular range and temperature influence.
The technology used by Piher is only sensitive to the flux density coplanar with the IC surface.
The absolute position information is computed from both vectorial components of the flux density (i.e. BX and BY) of a magnet. Then, an output signal proportional to the decoded position is produced.