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WO2018041902A1 - Dispositif de détection d'objets dans un flux de matériau - Google Patents

Dispositif de détection d'objets dans un flux de matériau Download PDF

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Publication number
WO2018041902A1
WO2018041902A1 PCT/EP2017/071782 EP2017071782W WO2018041902A1 WO 2018041902 A1 WO2018041902 A1 WO 2018041902A1 EP 2017071782 W EP2017071782 W EP 2017071782W WO 2018041902 A1 WO2018041902 A1 WO 2018041902A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
wavelength range
light source
detector
transmission wavelength
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2017/071782
Other languages
German (de)
English (en)
Inventor
Rainer Eixelberger
Reinhold Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Binder and Co AG
Original Assignee
Binder and Co AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Binder and Co AG filed Critical Binder and Co AG
Priority to DE212017000206.9U priority Critical patent/DE212017000206U1/de
Priority to CN201790000346.9U priority patent/CN208177898U/zh
Publication of WO2018041902A1 publication Critical patent/WO2018041902A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/02—Direct processing of dispersions, e.g. latex, to articles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B07C5/3425—Sorting according to other particular properties according to optical properties, e.g. colour of granular material, e.g. ore particles, grain
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/26—Crosslinking, e.g. vulcanising, of macromolecules of latex
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/0055—Plastic or rubber gloves
    • A41D19/0058—Three-dimensional gloves
    • A41D19/0062—Three-dimensional gloves made of one layer of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/003—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/22—Making multilayered or multicoloured articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08J2309/02—Copolymers with acrylonitrile
    • C08J2309/04—Latex
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08J2309/10—Latex
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2313/00—Characterised by the use of rubbers containing carboxyl groups
    • C08J2313/02—Latex
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N2021/1734—Sequential different kinds of measurements; Combining two or more methods
    • G01N2021/1736—Sequential different kinds of measurements; Combining two or more methods with two or more light sources
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G01N2021/8812—Diffuse illumination, e.g. "sky"
    • G01N2021/8816—Diffuse illumination, e.g. "sky" by using multiple sources, e.g. LEDs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G01N2021/8835—Adjustable illumination, e.g. software adjustable screen
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G01N2021/8845—Multiple wavelengths of illumination or detection

Definitions

  • the invention relates to a device for detecting objects in a material flow, comprising at least
  • a light source for emitting light in a first transmission wavelength range and in a second transmission wavelength range, which is different from the first transmission wavelength range, to the material flow
  • a first detector for detecting reflection light, fluorescent light or transmission light of the objects
  • a second detector for detecting reflection light, fluorescent light or transmission light of the objects
  • first and second detection wavelength ranges are different in the sense that they are not identical, but they will usually not overlap.
  • the device is e.g. suitable for detecting waste glass in the form of cullet, if this is to be separated by color and / or for detecting other impurities, such as stones, metals or plastics, if they are to be removed from the waste glass.
  • Device is also suitable for detecting various plastic or articles or pieces of plastic and then separated from each other.
  • the invention due to the need for two different detectors, does not relate to devices where light is emitted from one or more light sources in two or more transmit wavelength ranges, but the light of all transmit wavelength ranges is detected collectively in a detector. This is about in the US
  • EP 2589858 AI falls into this category, where light of different wavelength
  • Focused light beam is used, which is used for the illumination of an object, wherein an image of the object in an imaging device, ie a single detector is generated.
  • Type of light or as the first transmission wavelength range and of visible light as the second type of light or as a second
  • Sorting device in which the light sources and detectors are arranged. This in turn increases the risk of fire in the sorter.
  • An object of the invention is thus to provide a
  • Detection wavelength range is a lower intensity than for the other detection wavelength range is sufficient.
  • the device for detecting objects in a material stream comprises at least
  • a light source for emitting light in a first transmission wavelength range and in a second transmission wavelength range, which is different from the first transmission wavelength range, to the material flow
  • a first detector for detecting reflection light, fluorescent light or transmission light of the objects
  • a second detector for detecting reflection light, fluorescent light or transmission light of the objects
  • the device is characterized by:
  • the first detector is connected to the light source for controlling the light intensity of the first transmission wavelength range, and / or the second detector is connected to the light source
  • Light source for controlling the light intensity of the second transmission wavelength range is connected.
  • the light source thus emits light of a certain first transmission wavelength range, e.g. Infrared light, and a certain second transmission wavelength range, e.g. visible light.
  • the first detector is associated with the light of the first transmission wavelength range and can only light
  • the first detection wavelength range of the first detector is at least a portion of the first transmission wavelength range.
  • the light of the second transmission wavelength range is different from that of the first transmission wavelength range. That is, the two wavelength ranges are not identical, but an overlapping of the wavelength ranges is possible. If, for example, the second transmission wavelength range is to comprise only visible light, some infrared light is also emitted by some light sources, even if it is not detected by the associated second detector at all.
  • the second detector is associated with the light of the second transmission wavelength range and can only light
  • the second detection wavelength range of the second detector is at least a portion of the second transmission wavelength range.
  • transmission wavelength range e.g., UV light
  • detection wavelength range e.g., visible light
  • the light source can now comprise at least one supercontinuum laser light source, which is designed to emit light in a first transmission wavelength range and in a second transmission wavelength range, which does not overlap with the first transmission wavelength range.
  • Supercontinuum or white laser light is laser light, which is an extremely widened optical
  • a supercontinuum can be one
  • Infrared light (first transmission wavelength range) can be set independently of that for visible light (second transmission wavelength range). It is in the
  • the first detector is connected to the light source (e.g., a supercontinuum laser light source) for control of
  • Both the first detector is connected to the light source for controlling the light intensity of the first transmission wavelength range and the second detector is connected to the light source for controlling the light intensity of the second transmission wavelength range.
  • the light intensity in the first or second transmission wavelength range can always be set so that it is sufficient for the associated detector.
  • Too much intensity in the first transmission wavelength range can be reduced, so that the heat generated by the light source in this
  • Wavelength range reduced. So it is conceivable that the Detector itself can determine what intensity he needs in the individual transmission wavelength ranges.
  • the light source does not have to have illumination units that can emit light in both transmission wavelength ranges in each case. Instead, it can also be provided that the light source both a first
  • first detector is connected to the first light source for controlling the light intensity of the first light source
  • second detector is connected to the second light source for controlling the light intensity of the second light source.
  • First and second light source can be in the operation of the device on the same side of the
  • Only the second detector is connected to the second light source for controlling the light intensity of the second light source, or
  • Both the first detector is with the first light source for controlling the light intensity of the first light source connected as well as the second detector is connected to the second light source for controlling the light intensity of the second light source.
  • the light intensity of the first and second light source can always be set so that it is sufficient for the associated detector. Thus, e.g. too great an intensity of the first light source
  • First and second light sources may have their own adjusting devices, with which the intensity of the emitted light is adjusted, most simply by changing the current supplied to the respective light source. It is therefore conceivable that the detector itself can determine which intensity of the first or second light source it requires.
  • the quality of the data or images which the detectors detect can only be ascertained during the evaluation of the data or images during the image processing.
  • the first detector and / or the second detector is connected to the light source via an evaluation device, which is used to evaluate the signals of the first and second
  • Evaluation device determines whether the light source (s) may need to be set differently, that is, for example, with greater intensity in a transmission wavelength range
  • the evaluation device determines that the intensity can be reduced in a transmission wavelength range and still the Data of the associated detector can be evaluated error-free.
  • Possible wavelength ranges within the meaning of the invention are e.g. visible light, infrared light, UV light, or a portion of said wavelength ranges, e.g. near infrared light (NIR light), or blue light.
  • transmission wavelength ranges e.g. visible light, infrared light, UV light, or a portion of said wavelength ranges, e.g. near infrared light (NIR light), or blue light.
  • NIR light near infrared light
  • the first transmission wavelength range includes IR light, in particular NIR light
  • the second transmit wavelength range includes visible light
  • the first transmission wavelength range may comprise only IR light, in particular only NIR light, and the second transmit wavelength range only visible light.
  • the first light source is preferably for emitting IR light, in particular NIR light,
  • Halogen light source for emitting infrared light, e.g. a halogen flashlight.
  • the second light source preferably comprises at least one LED light source for emitting visible light.
  • the only light source e.g., the supercontinuum laser light source
  • the first light source e.g., the first light source
  • the second light source e.g., the second light source
  • each light source can be made up of several
  • Similar physical units are formed, for example, from a series of several units (multiple supercontinuum laser, LED lamps, halogen lamps, ...), which are transverse to Material flow are arranged, or from several such rows.
  • the first transmission wavelength range comprises infrared light, that is, if the first light source emits infrared light, it is provided that the first detector is on
  • Detector for infrared light is.
  • the first detector may comprise a spectrograph for infrared light.
  • the first detector may be sensitive in the case of NIR light in the range of 900-2,300 nm. If the second transmission wavelength range comprises visible light, that is to say the second light source emits visible light, it is preferably provided that the second detector comprises a camera for visible light. This can be in
  • Range of 380-750 nm wavelength sensitive is measured in two different detectors by the same object, in particular also at the same time.
  • an evaluation device for evaluating the signals of the first and second detectors and for determining at least one property of
  • Sorter is a means of sorting
  • Plastic articles or plastic parts e.g. according to their color.
  • the evaluation is usually with a discharge device for sorting objects from the
  • the discharge device can be about suction or
  • the discharge device is thus also part of the sorter.
  • An object of the invention is to integrate two different transmission wavelength ranges (e.g., two different illumination units) for a sorter.
  • one transmission wavelength range e.g., the second light source
  • the other transmission wavelength range e.g., the first light source
  • the intensity of the infrared light source against a common light source for infrared and visible light can be reduced. This also reduces the red intensity from the infrared light source and the color fidelity in the visible range increases.
  • a light source that can serve both detection wavelength ranges and light in two
  • a method for operating a device according to the invention may comprise
  • a first detector detects in a first detection wavelength range reflection light, fluorescent light or transmission light of the objects which are illuminated by light in the first transmission wavelength range is caused,
  • Reflected light, fluorescent light or transmission light of the objects which is caused by light in the second transmission wavelength range
  • Light source is controlled so that the light intensity is sufficient for the first detector, and / or the
  • Light source is controlled so that the light intensity is sufficient for the second detector.
  • non-contact measuring methods can usually be used by means of infrared and / or RGB sensors which, on the basis of the registered transmission or absorption degree, can be used on the
  • Material stream of directed light a departure of certain materials / objects, such as by a distraction in for
  • the item to be sorted out of the mixed material flow is irradiated on a sorting belt or during a free-fall path by radiation sources and the radiation passing through or reflected by the material flow is intensity-compensated
  • the detectors have different sensitivities for different wavelengths (ranges).
  • an RGB camera e.g. an RGB signal
  • the second light source can emit light in the visible range (380-750 nm wavelength).
  • a UV light source for activating fluorescent light would be conceivable as the first or second light source, wherein the
  • Fluorescent light can then be back in the visible range.
  • Lighting units e.g. one or more
  • Illumination unit both in a first transmission wavelength range light in the infrared range (780 nm -1 mm
  • Wavelength in particular in the NIR range (900-2,300 nm), as well as in a second transmission wavelength range light in the visible range (380-750 nm wavelength) emit.
  • Fig. 2 is a sorter with an inventive
  • Detection device with first and second light source.
  • Fig. 1 shows a sorter for sorting objects 9, e.g. Plastic waste in the form of colored plastic pieces, according to the prior art.
  • the objects 9 are detected after they pass over an inclined plane 10 into a free-fall path, of which a section is illuminated by the light source 6 and detected by the detectors 1, 2. It would also be possible to detect the objects 9 on a conveyor belt. Preference is given to a single-layer material flow.
  • the objects are (in Fig. 1 from the left) with light of
  • Irradiated light source 6 wherein the light source 6 simultaneously emits visible light 8 and infrared light 7.
  • Light source 6 may consist of several similar units, which are distributed over the width of the material flow or the inclined plane 10, that is normal to the plane of the drawing.
  • the reflection light emanating from the objects 9 is detected with two different detectors 1, 2 which are located on the same side of the objects 9 as the ones
  • the device comprises a first detector 1 for
  • the first detector 1 here an IR detector (in particular an NIR detector), comprises eg an objective, a spectrograph and an optical sensor.
  • the second detector 2 is a VIS detector (in particular an RGB camera) and comprises a
  • Detectors can be designed as a line scan camera.
  • the objects 9 are irradiated by the light source 6 with light of different wavelengths, namely with infrared light 7 (first transmission wavelength range) and with visible, in particular white, light 8 (second transmission wavelength range).
  • first transmission wavelength range first transmission wavelength range
  • second transmission wavelength range visible, in particular white, light 8
  • Reflection light of different wavelengths namely again infrared light 7 and visible light 8 is detected by the two different detectors 1, 2.
  • Lichtumlenkelement 3 which is arranged in the beam path to the detectors 1,2, is partially transparent or
  • wavelength selective it reflects infrared light 7 light, e.g. the NIR component above 700 nm, and deflects it (for example by about 90 °) in the direction of the first detector 1. Visible light 8, e.g. with wavelengths below 700 nm, is transmitted and passes to the second detector. 2
  • the evaluation device 11 which is usually designed as a computer, processes the data from the detectors 1, 2 and determines at least one property (eg the color) of each object 9 and then divides the objects 9 into predetermined fractions (eg white - not white) to, so on the basis of this
  • the evaluation device 11 sends a corresponding control signal to the discharge device 12, e.g. an exhaust nozzle, so that objects of a fraction (e.g., the white objects) through the discharge device 12, e.g. an exhaust nozzle, so that objects of a fraction (e.g., the white objects) through the discharge device 12, e.g. an exhaust nozzle, so that objects of a fraction (e.g., the white objects) through the discharge device 12, e.g. an exhaust nozzle, so that objects of a fraction (e.g., the white objects) through the
  • Discharge device 12 are deflected over a partition wall 13 addition, while objects of the other fraction (not white) just will not be distracted and remain on the other side of the partition wall 13. Since most of the time, a high intensity of visible light 8 is needed, the light source 6 must be operated near its power limit, thus radiating also high intensity infrared light 7, which accordingly heats the space around the light source 6, albeit at a lower intensity of the infrared light 7 for the first detector 1 would be sufficient.
  • the device shown in Fig. 1 of detectors 1,2, light source 6 and slate plane 10 is usually surrounded by a housing, not shown here, so that the interior of the housing is heated accordingly.
  • Fig. 2 differs from Fig. 1 in that instead of the light source 6 two
  • the first light source 4 sends only (as physically possible,
  • the two light sources 4, 5 are connected to the evaluation device 11, which is connected to the detectors 1, 2.
  • the evaluation device 11 can now send control signals for controlling the intensity of the individual light sources 4, 5 to them, so that the intensity of the two light sources 4, 5 can be set independently of one another. It can the
  • Evaluation device 11 the intensity of the light sources 4.5 set so that it is just sufficient to allow an evaluation of the data of the detectors 1,2.
  • the intensity of the first light source 4 for infrared light 7 can be lowered without the intensity for the second
  • the first light source 4 is composed of halogen light rods. For certain applications, the light source 4 sends NIR light off, the associated detector 1 is then
  • Light source 5 is composed in Fig. 2 of a plurality of white light LEDs. Each light source 4, 5 can be influenced by the associated sensor or detector 1, 2 independently of the other light source. As the light intensity in the visible light
  • the halogen light bars can be operated at a lower power than the specified rated power. This results in a lower
  • Light source 4 there is a better color fidelity in the range of visible light by reducing the originating from the halogen illumination red intensity.
  • first and / or second light source 4, 5 can also work in the transmission method.
  • the first light source 4, which emits infrared light 7 here could work in the reflection method
  • the second light source 5, which emits visible light 8 here works in the
  • Transmission method works, for which, in comparison to FIG. 2, the second light source 5 would have to be arranged on the side of the material flow opposite the second detector 2.
  • Lighting units each can emit both IR light, especially only NIR light, as well as visible light, being the intensity of IR light and visible light
  • the supercontinuum laser light source can also be connected to only one of the detectors 1, 2 if the intensity is to be adjustable only for one of the two transmission wavelength ranges.
  • the embodiment with a supercontinuum laser light source is similar to that shown in Fig. 1 with the light source 6.
  • the light source 6 such as a halogen light bar
  • the supercontinuum laser light source and replace it, e.g. via the evaluation device 11, with one or both

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Engineering & Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Spectroscopy & Molecular Physics (AREA)

Abstract

La présente invention concerne un dispositif de détection d'objets (9) dans un flux de matériau, comprenant au moins : une source de lumière (4, 5), pour émettre une lumière, dans une première plage de longueurs d'onde d'émission et dans une deuxième plage de longueurs d'onde d'émission, laquelle est différente de la première plage de longueurs d'onde d'émission, au flux de matériau ; un premier détecteur (1), pour détecter une lumière réfléchie, une lumière fluorescente ou une lumière de transmission des objets, provoquées par la lumière dans la première plage de longueur d'onde d'émission dans une première plage de longueurs d'onde de détection ; un deuxième détecteur (2), pour détecter une lumière de réflexion, une lumière fluorescente ou une lumière de transmission des objets, provoquées par la lumière dans la deuxième plage de longueurs d'onde d'émission dans une deuxième plage de longueurs d'onde de détection, ledit dispositif étant caractérisé en ce que le premier détecteur (1) est connecté à la source de lumière (4), pour contrôler l'intensité lumineuse de la première plage de longueur d'onde d'émission et/ou le deuxième détecteur (2) est connecté à la source de lumière (5), pour contrôler l'intensité lumineuse de la deuxième plage de longueurs d'onde d'émission. En conséquence, la chaleur générée par la source de lumière peut être réduite.
PCT/EP2017/071782 2016-08-30 2017-08-30 Dispositif de détection d'objets dans un flux de matériau Ceased WO2018041902A1 (fr)

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DE212017000206.9U DE212017000206U1 (de) 2016-08-30 2017-08-30 Vorrichtung zum Detektieren von Objekten in einem Materialstrom
CN201790000346.9U CN208177898U (zh) 2016-08-30 2017-08-30 用于探测在材料流中的对象的装置

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ATGM50175/2016U AT15723U1 (de) 2016-08-30 2016-08-30 Vorrichtung zum Detektieren von Objekten in einem Materialstrom
ATGM50175/2016 2016-08-30

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CN111451176A (zh) * 2019-01-21 2020-07-28 合肥泰禾光电科技股份有限公司 一种用于物料分选设备的探测装置、物料分选设备及方法

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AT15723U1 (de) 2018-04-15
CN208177898U (zh) 2018-12-04
DE212017000206U1 (de) 2019-04-10

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