Abstract: A process for the optical detection of moving objects comprises: illuminating the object either with light pulses having different intensities and/or pulse durations, or with light pulses optionally having different intensities and/or pulse durations, and with secondary light (SL) which induces an optically detectable secondary effect; taking images of the object under different illuminations with a monochromatic optical area sensor organized line by line; reading out and temporarily storing at least so many lines of each image as there are different illuminations, with the read-out lines having a line pitch relative to each other, sequentially combining lines from the images taken to form combination lines, with the lines combined with each other having the line pitch or a multiple thereof, respectively; and assembling the combination lines into a combinatory overall picture.

Abstract: A process for differentiating conductive and/or ferromagnetic objects (O) in a material stream (2) comprises generating an electromagnetic alternating field by exciting a coil (S) with a sinusoidal voltage (ue(t)) of a constant frequency (fM), detecting an impedance change in the coil, which has been caused by an object (O), by determining at least one pair of values from a peak value (ÎM) and a phase shift (?m) of the coil current (iM(t)) toward the excitation potential (ue(t)) of the coil, and determining the material by comparing the peak values (ÎM) and phase shifts (?m) with reference values, wherein the peak values (ÎM) of the coil current (iM(t)) are calculated at at least one measuring phase angle (?m) with the aid of a window comparator having a constant window width (?i), wherein the time (?tM) between the window inlet point (p4) and the window outlet point (p6) of the coil current (iM(t)) is measured and the gradient of the current profile (iM(t)) is calculated from the window width (?i) and the me

Abstract: A process for the optical detection of moving objects comprises: illuminating the object either with light pulses having different intensities and/or pulse durations, or with light pulses optionally having different intensities and/or pulse durations, and with secondary light (SL) which induces an optically detectable secondary effect; taking images of the object under different illuminations with a monochromatic optical area sensor organized line by line; reading out and temporarily storing at least so many lines of each image as there are different illuminations, with the read-out lines having a line pitch relative to each other, sequentially combining lines from the images taken to form combination lines, with the lines combined with each other having the line pitch or a multiple thereof, respectively; and assembling the combination lines into a combinatory overall picture.

Abstract: A device for detecting parts in a material flow which influence an electromagnetic alternating field comprises an oscillator (1) and at least one transmitting coil (2) for generating an electromagnetic alternating field extending across the width of a conveying distance of the material flow. At least one detector coil (4) comprising two windings (4a, 4b) connected inversely detects the electromagnetic alternating field and generates a detection signal (DS), the phase signal portion (PS?) of which is detected by means (7), from the relative motion between the alternating field and a field-influencing part.

Abstract: A device for detecting parts in a material flow which influence an electromagnetic alternating field comprises an oscillator (1) and at least one transmitting coil (2) for generating an electromagnetic alternating field extending across the width of a conveying distance of the material flow. At least one detector coil (4) comprising two windings (4a, 4b) connected inversely detects the electromagnetic alternating field and generates a detection signal (DS), the phase signal portion (PS?) of which is detected by means (7), from the relative motion between the alternating field and a field-influencing part.