Patent ID: 7954406
Filing Date: 2011-06-07
Classification: G01B,G01N,Y10T

Abstract:
1. A measuring device and vibrating knife adapted to vibrate in a direction parallel to a section plane and substantially parallel to a cutting edge of the knife, comprising: a light barrier into which the cutting edge is placed, for measurement of a transverse offset of the cutting edge during its lateral vibratory motion the light barrier being oriented in a direction parallel to the section plane and the cutting edge partially covering a light beam of the light barrier, wherein a fluctuation over time of a measured signal (tpm) derived from the light barrier is used to determine the transverse offset; and an electronic measurement system (C- wherein the electronic measurement system is additionally configured to adjust the intensity of the light beam of the light barrier prior to a determination of the transverse offset with the cutting edge in a position completely outside the light barrier, establishing a utilization exceeding 90% of the modulation range of a detector element of the light barrier.