SIMPSpad position sensing

SIMPSpad is a position sensor technology that is characterized above all by its ability to measure non-ferrous metals. Based on an inductive principle, it can detect simple metallic or resonant targets. To enable this technology to measure non-ferrous metals as well, a layer of highly permeable soft magnetic material is added and operated with a magnetic target.

Market segments

SIMPSpad magneto-inductive sensor technology is ideal for the demanding requirements of linear position sensors in:

• Transmission
• Brake cylinders
• Shock absorbers
• Hydraulic cylinders
• Oil and fuel systems

Typical features and benefits

• ASIC available as standard component, over 100 mio. in the field
• Fast and accurate position measurement through non-ferro-magnetic materials, as well as through water, oil and plastic
• Direct assembly onto non-ferrous metal possible
• Dual channel operation possible with one magnet and complete galvanic separation of channels
• Flexible magnet orientation, preferably perpendicular to direction of motion
• Simple and robust mechanic construction of the sensor
• Considerable flexibility in sensor design to achieve a low and compact space envelope
• Contactless, absolute position sensor
• Magnet to PAD separations > 10 mm possible
• Robust to variation in magnet-PAD spacing
• Adaptive to different magnet orientations
• Various outputs (analogue / digital) feasible
• Good immunity to external electromagnetic fields

SIMPSpad - Optimised for integrated solutions:

Protected against external influences, an integrated SIMPSpad solution is ideal for shock absorber applications. The technical implementation with a printed circuit board offers additional flexibility and room for innovative additions, such as acceleration or speed detection.