Code source detection device has read head with stimulator interacting with code source stimulation element, oscillation element natural frequency stored in evaluation circuit

摘要

The device has an inductive read head, a code source movable relative to the head and contactlessly interacting with it and an evaluation circuit for identifying and comparing at least one oscillation frequency from the head. The code source has at least one stimulatable oscillation element with a stimulation element accelerated by the read head. The natural frequency of the oscillation element is stored in the evaluation circuit for comparison. The device has an inductive read head (5), a code source (3) movable relative to the read head and contactlessly interacting with it and an evaluation circuit (6) for identifying and comparing at least one oscillation frequency emanating from the read head. The code source contains at least one stimulatable oscillation element bearing a stimulation element accelerated by the read head, which has a stimulator interacting with the stimulation element. The natural frequency of the oscillation element is stored in the evaluation circuit for comparison.