Hexagon Technology Center Gmbh

Lukas Baumann

Marcel Rohner

Rainer Wohlgenannt

Ingo Bednarek

Claudio Iseli

Michael Reiterer

Alberto Tarizzo

A capacitive distance sensor for determining distances from an object, wherein the distance sensor has at least one sensor electrode and at least one compensation electrode. Deviations from an ideal parallel orientation of distance sensor and object and/or errors caused by capacitive edge effects can be compensated by means of the compensation electrode.

Capacitive distance sensor

Some embodiments of the invention include a capacitive linear encoder for determining positions comprising a scale and a read head for capacitively scanning the scale, wherein scale and read head are movable relative to one another. The scale has at least one, preferably capacitive, position reference marker. On the basis of the position references provided by the capacitive position reference marker, the positions are locatable in absolute terms and verifiable.

Capacitive linear encoder

Some embodiments of the invention include an absolute capacitive rotary encoder comprising a first disk, which is rotatable relative a second disk, and a first sensor ring and a second sensor ring. The first and the second sensor ring each have a multiplicity of first coupling electrodes and second coupling electrodes capacitively coupling to one another. The first coupling electrodes of a respective sensor ring have different coupling signal phases. The first sensor ring and the second sensor ring are matched to one another in such a way that an angle is determinable absolutely.

Growing community of inventors

St. Gallen, Switzerland

Lukas Baumann