摘要:
A method and apparatus for decoding one or more bar codes comprising a plurality of marks, the marks comprise one or more spaces and one or more bars. The method comprises the following steps: digitalizing electrical signals obtained from a pick-up for picking up reflected laser beams; deriving the width of bars and spaces from the digital signals; determining one or more mark values with a degree on the basis of the width of the spaces and bars found inside the mark or in the immediate vicinity of the mark; determining one or more information values with a degree from the mark values with a degree; and selecting the most probable information values for a bar code or part of a bar code using the determined information values.
摘要:
An optional device for reading and decoding bars of different reflectivity arranged in accordance with a barcode and adjoining one another. The device includes an optical scanning device for scanning the bars by a light beam, a sensor for receiving the reflected light beam and converting the latter into an electrical sensor output signal, a transition detector for detecting the level transitions of the electrical sensor output signal and a decoding device which decodes the scanned barcode on the basis of the output signals from the transition detector. The sensor output signal is fed to an amplitude averaging device and/or contrast averaging device, the output of which is connected to a decision device which controls the decoding device in such a way that reading and decoding of the barcode is carried out several times if the output signal from the amplitude averaging device and/or contrast averaging device is below at least a predetermined threshold value.
摘要:
The invention provides a detection device for determining position information from an object to the detection device, wherein the position information includes at least a distance from that object to the detection device. The detection device includes: a light source arranged to emit light; a control device arranged to control the light source; a light measuring device comprising a 2D classification of light sensitive elements and arranged to measure reflected light and to generate a corresponding measuring signal; a signal processing device arranged to process the measuring signal to position information, including distance information, of the object with respect to the detection device, wherein the signal processing device includes an object recognition device is configured to recognize at least one of: an udder, a teat, a and respective parts thereof, and wherein at least one of the light measuring device has an absolute sensitivity maximum with a wavelength between 400 and 570 nm, and the light source has an absolute emission maximum with a wavelength between 400 and 570 nm.
摘要:
Optical device for reading and decoding bars of different reflectivity arranged in accordance with a barcode and adjoining one another, comprising an optical scanning device for scanning the bars by means of a light beam, a sensor for receiving the reflected light beam and the conversion thereof into an electrical sensor output signal, a transition detector for detecting the level transitions in the sensor output signal and a decoding device which decodes the scanned barcode on the basis of the output signals from the transition detector. The transition detector is provided with a comparator and a flipflop connected to the output thereof. The sensor output signal is fed to one of the inputs of the comparator. The output of the flipflop is coupled via at least a number of first integrators to the other input of the comparator. The transition detector also comprises one or more second integrators connected to the output of the flipflop and a device, connected to said second integrators, for determining the positions of the transitions in the barcode.