Patent ID: 8993956
Filing Date: 2015-03-31
Classification: G01N,G07D

Abstract:
1. A method for the calibration of a sensor system having an operating mode for the testing of measuring objects and a calibration mode for the calibration of the sensor system, the method comprising: a first calibration step, in which a first calibration medium independent of the sensor system, having a standardized reference, is brought into a focus area of the sensor system so that the first calibration medium covers the entire detection area of the sensor system where the particular measuring object to be tested is located during the operating mode; an excitation source of the sensor system excites the first calibration medium with an excitation signal to generate a signal is by the standardized reference of the first calibration medium due to the excitation signal being detected by at least one sensor of the sensor system to generate a measuring signal; and an adjustment of the sensor system is effected using the measuring signal; a second calibration step which is performed immediately after the first calibration step, wherein a second calibration medium, having a non-standardized reference, and being a component of the sensor system, is brought into the optical path of the sensor system at a place which is shifted by a distance (d) in relation to the focus area of the sensor system, so that the second calibration medium covers the entire detection area of the sensor system; the excitation source of the sensor system excites the second calibration medium with the excitation signal to generate a signal by the reference of the second calibration medium due to the excitation signal being detected by the sensor to generate a measuring signal, wherein correction factors obtained from the first calibration step are used in the second calibration step upon the generation of the measuring signal of the second calibration step; the measuring signal of the second calibration step is stored; in the calibration mode, the second calibration medium is again brought into the optical path of the sensor system at the place which is shifted by the distance (d) in relation to the focus area of the sensor system, and covers the entire detection area of the sensor system; the excitation source of the sensor system excites the second calibration medium with the excitation signal to generate a signal by the reference of the second calibration medium due to the excitation signal being detected by the sensor to generate a measuring signal; the measuring signal of the calibration mode is compared with the stored measuring signal of the second calibration step; and an adjustment of the sensor system is effected if the measuring signal of the calibration mode deviates from the stored measuring signal of the second calibration step.