Method and device for detecting and differentiating between contaminations and accepts as well as between different colors in solid particles
First Claim
Patent Images
1. A method of detecting and differentiating between base materials, colors and contamination in granulate-like or tablet-shaped substances, the method comprising the steps of:
- a) linearly irradiating and exciting the substances with a laser;
b) detecting re-emitted secondary radiation from the substances;
c) spectroscopically analyzing said secondary radiation; and
d) classifying and sorting the substances following step c), wherein step b) comprises detecting said re-emitted secondary radiation as a spectrum using a multi-anode photomultiplier tube, and step c) comprises effecting substance analysis, color determination and contaminant detection via signal preparation, programmed logic and mathematical algorithms including calibration vectors.
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Abstract
The invention concerns a method and a device for detection of and differentiation between base materials, colors and contamination in granulate-like or tablet-shaped substances, characterized in that the substances are illuminated in a linear manner with a laser beam, the optical radiation re-emitted by the substances is spectroscopically analyzed, and the substances are classified and sorted into different groups.
61 Citations
24 Claims
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1. A method of detecting and differentiating between base materials, colors and contamination in granulate-like or tablet-shaped substances, the method comprising the steps of:
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a) linearly irradiating and exciting the substances with a laser;
b) detecting re-emitted secondary radiation from the substances;
c) spectroscopically analyzing said secondary radiation; and
d) classifying and sorting the substances following step c), wherein step b) comprises detecting said re-emitted secondary radiation as a spectrum using a multi-anode photomultiplier tube, and step c) comprises effecting substance analysis, color determination and contaminant detection via signal preparation, programmed logic and mathematical algorithms including calibration vectors. - View Dependent Claims (2, 3)
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4. A method of detecting and differentiating between base materials, colors and contamination in granulate-like or tablet-shaped substances, the method comprising the steps of:
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a) linearly irradiating and exciting the substances with a laser;
b) detecting re-emitted secondary radiation from the substances;
c) spectroscopically analyzing said secondary radiation; and
d) classifying and sorting the substances following step c), wherein step b) comprises detecting said re-emitted secondary radiation as a spectrum using a multi-anode photomultiplier tube, and step c) comprises effecting substance analysis, color determination and contaminant detection by preparing signals with analog multi-channel signal processing according to mathematical models, summing up of the contents of all signal channels, and classifying a summed signal. - View Dependent Claims (5, 6)
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7. A method of detecting and differentiating between base materials, colors and contamination in granulate-like or tablet-shaped substances, the method comprising the steps of:
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a) linearly irradiating and exciting the substances with a laser, b) detecting re-emitted secondary radiation from the substances;
c) spectroscopically analyzing said secondary radiation; and
d) classifying and sorting the substances following step c), wherein step b) comprises detecting said re-emitted secondary radiation as a spectrum using a multi-anode photomultiplier tube, and step c) comprises effecting substance analysis, color determination and contaminant detection via a processor having access to reference spectra contained in a data memory. - View Dependent Claims (8, 9)
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10. A method of detecting and differentiating between base materials, colors and contamination in granulate-like or tablet-shaped substances, the method comprising the steps of:
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a) linearly irradiating and exciting the substances with a laser, b) detecting re-emitted secondary radiation from the substances;
c) spectroscopically analyzing said secondary radiation; and
d) classifying and sorting the substances following step c), wherein step b) comprises detecting said re-emitted secondary radiation as a spectrum using a multi-anode photomultiplier tube, and step c) comprises effecting substance analysis, color determination and contaminant detection via a processor and mathematical classification models. - View Dependent Claims (11, 12)
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13. A device for the examination of substance properties of a measuring material, a granulate, and tablet-like substances, the device comprising:
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a laser beam;
an optical adjustment means for deflecting said beam and for simultaneously guiding said beam over the measuring material;
a device for spectral decomposition of secondary radiation re-emitted by the measuring material;
a sensor system for recording said secondary radiation, including a multi-anode photomultiplier for detecting said re-emitted secondary radiation;
means for evaluation of received secondary radiation, including signal preparation means, programmed logic and mathematical algorithms including calibration vectors for effecting substance analysis, color determination and contaminant detection. - View Dependent Claims (14, 15)
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16. A device for the examination of substance properties of a measuring material, a granulate, and tablet-like substances, the device comprising:
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a laser beam;
an optical adjustment means for deflecting said beam and for simultaneously guiding said beam over the measuring material;
a device for spectral decomposition of secondary radiation re-emitted by the measuring material;
a sensor system for recording said secondary radiation, including a multi-anode photomultiplier for detecting said re-emitted secondary radiation;
means for evaluation of received secondary radiation, including signal preparation means with analog multi-channel signal processing according to mathematical models with summing up of a contents of all signal channels and classification of a summed signal to effect substance analysis, color determination and contaminant detection. - View Dependent Claims (17, 18)
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19. A device for the examination of substance properties of a measuring material, a granulate, and tablet-like substances, the device comprising:
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a laser beam;
an optical adjustment means for deflecting said beam and for simultaneously guiding said beam over the measuring material;
a device for spectral decomposition of secondary radiation re-emitted by the measuring material;
a sensor system for recording said secondary radiation, including a multi-anode photomultiplier for detecting said re-emitted secondary radiation;
means for evaluation of received secondary radiation, including a processor having access to reference spectra contained in a data memory for effecting substance analysis, color determination and contaminant detection. - View Dependent Claims (20, 21)
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22. A device for the examination of substance properties of a measuring material, a granulate, and tablet-like substances, the device comprising:
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a laser beam;
an optical adjustment means for deflecting said beam and for simultaneously guiding said beam over the measuring material;
a device for spectral decomposition of secondary radiation re-emitted by the measuring material;
a sensor system for recording said secondary radiation, including a multi-anode photomultiplier for detecting said re-emitted secondary radiation;
means for evaluation of received secondary radiation, including a processor and mathematical classification models for effecting substance analysis, color detection and contaminant detection. - View Dependent Claims (23, 24)
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Specification