Position-Determining Device for a Hand-Held Material Testing Apparatus, A Method for Operating the Position-Determining Device, and a Hand-Held Material Testing Apparatus with a Position-Determining Device

A hand-held material testing apparatus comprising:

• at least one chassis;
• at least one rolling element mounted on the at least one chassis;
• and
• at least one position-determining device configured to detect a distance traveled by the at least one chassis, the position-determining device comprising:
• at least one signal transmitter unit for an arrangement on the at least one rolling element;
• and
• at least one sensor unit,
• wherein the at least one signal transmitter unit comprises at least one signal transmitter element configured to change a measurement signal as a function of a rotational position of the at least one rolling element,
• wherein the at least one sensor unit is provided for an arrangement on the at least one chassis and for detecting the measurement signal,
• wherein the at least one signal transmitter element is configured as an inductive signal transmitter element,
• wherein the at least one sensor unit is configured as an inductive sensor unit, and
• wherein inductive signal transmitter element and the inductive sensor unit are configured for inductive coupling to one another.

A method for operating a position-determining device for a hand-held material testing apparatus, comprising:

• changing a measurement signal from a signal transmitter element of the material testing apparatus as a function of a rotational position of a rolling element of the material testing apparatus;
• in at least one rotation determination step, detecting the measurement signal is by a sensor unit of the material testing apparatus;
• and
• in at least one position determination step, determining a distance traveled by the material testing apparatus,
• wherein the signal transmitter element and the sensor unit are inductively coupled in order to generate the measurement signal.