Inductive Positioning Systems

How we work
As an inductive positioning system we analyze the signals generated by the coil systems arranged after each other. Function and construction of these coils are identical with those in inductive proximity switches. The coils are arranged in such a way that an attenuation element (target) passed along can cause the attenuation of at least two coil elements at the same time. All coils are linked with a micro-controller which evaluates the oscillator amplitudes of all coils simultaneously. By calculating the relationship between the individual amplitude signals, it is possible to continuously determine the exact position of the attenuation element.

What we can do
As inductive positioning systems we are able to determine the exact position of the target passed along and to render this piece of information in the form of a certain voltage (0 to 10 V), intensity of current (4 to 20 mA) or bus signal. In addition to an analog output signal, some systems can learn precisely defined trip points. Inductive positioning systems like us are well suited to comprehensively record the position of moving components. Whereas conventional proximity switches only supply simple binary signals - in order to indicate a starting and an end point, for example - we offer considerably more precision and safety.

What makes us so special
Due to the continuous analysis of a system with several coil systems, we stand out for a high degree of repeatability at a maximum of precision and a solution of up to 125 µm. As we operate according to the inductive principle, we need neither ferrites nor magnets as target. In addition, we operate in non-contact mode, and thus are free from any mechanical wear. Like in an inductive proximity switch, the target may consist of any random metal. Contrary to magnetic measuring systems, we are able to very precisely compensate for the vertical distance changes of the target. This fact makes us practically insensitive to vibrations. Our high precision and reliable function are not affected even by extremely dirty environmental conditions which puts us distinctly apart from any optical system.