WO2007058102A1 - 混合物の識別システム - Google Patents
混合物の識別システム Download PDFInfo
- Publication number
- WO2007058102A1 WO2007058102A1 PCT/JP2006/322282 JP2006322282W WO2007058102A1 WO 2007058102 A1 WO2007058102 A1 WO 2007058102A1 JP 2006322282 W JP2006322282 W JP 2006322282W WO 2007058102 A1 WO2007058102 A1 WO 2007058102A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- infrared
- mixture
- infrared light
- lamp
- inspection line
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 70
- 239000000463 material Substances 0.000 claims abstract description 50
- 238000007689 inspection Methods 0.000 claims abstract description 48
- 230000003287 optical effect Effects 0.000 claims abstract description 33
- 238000012546 transfer Methods 0.000 claims description 40
- 238000001816 cooling Methods 0.000 claims description 29
- 239000011521 glass Substances 0.000 claims description 25
- 229910052736 halogen Inorganic materials 0.000 claims description 16
- 150000002367 halogens Chemical class 0.000 claims description 16
- 239000013077 target material Substances 0.000 claims description 11
- 230000035945 sensitivity Effects 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 241000208125 Nicotiana Species 0.000 abstract description 63
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 63
- 239000000126 substance Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 description 34
- 239000000356 contaminant Substances 0.000 description 18
- 238000012545 processing Methods 0.000 description 17
- 239000012535 impurity Substances 0.000 description 14
- 238000001514 detection method Methods 0.000 description 12
- 230000003595 spectral effect Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- 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
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
- G01N21/3559—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content in sheets, e.g. in paper
-
- 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
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
-
- 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
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
-
- 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
-
- 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
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8901—Optical details; Scanning details
Definitions
- the present invention relates to an identification system for identifying a target material from a mixture including a plurality of same-color materials, and in particular, when the mixture includes a raw material and impurities mixed in the raw material.
- the present invention relates to a mixture identification system that can be applied to the identification of the distribution or arrangement of components when the mixture is a composite structure including a plurality of components.
- This mixture identification system is used, for example, to detect impurities contained in a raw material, and this detection apparatus is disclosed in Patent Document 1 below.
- the apparatus of Patent Document 1 irradiates tobacco leaves as raw materials, that is, tobacco materials with near-infrared rays, captures the reflected light from the tobacco materials with a near-infrared CCD camera, and obtains image data.
- the image data is processed, and based on the processing results, the same-colored contaminants mixed in the tobacco material are detected.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-28544 (see [0016] to [0019] and FIG. 1)
- the above-described detection device of Patent Document 1 extracts near-infrared rays having a plurality of specific wavelengths (1.58 ⁇ m, 1.73 m) from infrared light reflected from tobacco raw materials, and extracts the extracted near-infrared rays. Based on the reflectance, it is determined whether the object reflecting the extracted near-infrared ray is a tobacco material or a contaminant.
- the extracted near-infrared ray has a specific reflectance with respect to the tobacco material, and therefore cannot be applied to the detection of contaminants from materials other than the tobacco material. Therefore, the detection device of Patent Document 1 is poor in versatility.
- the detection device of Patent Document 1 includes a spectroscope for extracting, that is, separating, near-infrared rays having a plurality of specific wavelengths as reflected light power of a cigarette raw material.
- the spectroscope includes a prism and a plurality of optical components. Has a filter. In the case of such a spectroscope, it is not easy to change spectroscope specifications when the near-infrared wavelength to be extracted is different from the specific wavelength.
- a near-infrared CCD camera uses a tobacco material when it is in the process of being transferred.
- the image data for each frame unit obtained in this way is processed individually. For this reason, in order to detect the contaminants contained in the tobacco raw material without missing it, the transfer speed of the tobacco raw material has to be slowed down, and it takes a long time to detect the contaminants. For this reason, the detection apparatus of Patent Document 1 is suitable for a raw material that requires a high detection speed for impurities.
- An object of the present invention is to provide a mixture identification system capable of detecting and identifying a target material in various mixtures obtained by mixing the same color materials at high speed and accurately.
- the mixture identification system is a transfer means for transferring a mixture along a predetermined transfer path, wherein the mixture includes a plurality of same-color materials.
- An irradiation device that irradiates infrared light toward the mixture on the inspection line, including an inspection line crossing the transfer path, and an image of the mixture based on the received infrared light that receives infrared light reflected from the mixture
- Infrared camera device that outputs data and a judgment circuit that identifies the target material contained in the mixture based on the output of the infrared camera device force, etc.
- a spectroscopic mirror that divides the light into a plurality of light beams having different regions, and a plurality of infrared filters that pass only infrared light of a specific wavelength from each light beam, and the mixture is irradiated with infrared light of a specific wavelength.
- infrared light having a specific wavelength has passed through each of the infrared filters and a plurality of infrared filters having a reflectance that causes a predetermined difference between the materials.
- a plurality of optical line sensors that respectively receive infrared rays, and are arranged to receive the reflected infrared light of the mixture force on the inspection line, and individually generate electrical signals corresponding to the amount of received infrared rays as the image data. And a plurality of optical line sensors having a large number of light receiving elements.
- the irradiation apparatus irradiates infrared light onto the inspection line of the transfer path.
- the infrared light reflected from the mixture passes through the spectroscopic mirror and the infrared filter, and is received by the optical line sensor of the infrared camera device.
- the image data of the mixture is output to the judgment circuit.
- the determination circuit detects or identifies the target material in the mixture based on the received image data.
- the mixture identification system of the present invention uses an infrared filter selected according to the type of the mixture, the detection of impurities contained in various mixtures and the materials forming the mixture are included.
- the target material can be identified, and it is excellent in versatility.
- the infrared camera device includes a plurality of optical line sensors that image the mixture based on the infrared light reflected from the mixture when the mixture passes on the inspection line. And the target material can be identified at high speed.
- the infrared camera device may further include a compensation circuit that compensates for a difference in sensitivity between the light receiving elements included in each optical line sensor.
- the compensation circuit includes an electrical signal of each light receiving element force. The gain and the offset value are set for each light receiving element.
- each optical line sensor can output the image data of the mixture accurately, and as a result, the detection of impurities and the identification of the target material can be performed accurately.
- the infrared camera device includes a calibration plate that uniformly reflects infrared light, a calibration position between an operation position on the inspection line and a rest position where the inspection line force is off. And a guide for guiding the movement of the sill plate.
- the calibration plate When the calibration plate is positioned at the operating position, the calibration plate uniformly reflects the infrared light from the irradiation device toward each optical line sensor, and based on this reflected light, the optical line sensor The gain and offset values assigned to each individual light receiving element are set accurately. As a result, the infrared camera device can output the image data of the mixture accurately.
- the irradiation device includes a pair of lamp units that respectively irradiate infrared light toward the inspection line, and these lamp units are respectively arranged upstream and downstream of the inspection line in the article transfer direction. ! Speak.
- the pair of lamp units described above emit infrared light from both sides sandwiching the inspection line, that is, from the upstream side and the downstream side as viewed in the transfer direction of the mixture. Irradiate and the mixture will not be shaded. Therefore, the mixture reflects infrared light over the entire area, and the reflected infrared light is reliably received by each optical line sensor. As a result, the identification system can detect impurities and identify target materials more accurately.
- each lamp unit extends in parallel with the inspection line and emits infrared light.
- the lamp unit emits infrared light, and the infrared light emitted from the halogen lamp force is directed toward the inspection line.
- a reflecting plate to be reflected.
- the infrared ray irradiated from both ends of the halogen lamp is weaker than the infrared ray irradiated by the central force of the halogen lamp.
- the light cannot be irradiated uniformly.
- the infrared laser device includes the above-described compensation circuit, it does not suffer from problems caused by non-uniform infrared irradiation.
- the irradiation device is a lamp housing that houses a pair of lamp units, and has an opening that allows infrared light emitted from the pair of lamp units to pass toward an inspection line.
- a glass window that closes the opening and allows infrared transmission;
- a cooling unit for cooling air in the pump unit.
- the cooling unit supplies cooling air through the lamp unit, and maintains the inside of the lamp unit at a pressure higher than the external pressure.
- the cooling air circulated through the lamp lamp and the hooding is used to suppress the heat radiated toward the lamp lamp and the udging force mixture. Prevent dust from entering. Therefore, the inner surface of the glass window is always kept clean, and infrared light transmitted through the glass window is not adversely affected by dust.
- the irradiation device may further include an air injection unit that generates an air flow along the outer surface of the glass window, and the air injection unit prevents dust from adhering to the outer surface of the glass window. Blocking, and the outer surface of the glass window is also kept clean.
- the irradiating device may further include a slide mechanism that allows the pair of lamp units to be pulled out with a lamp housing force, and the slide mechanism moves the pair of lamp units in a direction parallel to the inspection line. To slidably support. In this case, the halogen lamp of each lamp unit is replaced in a state where the lamp unit is pulled out of the lamp housing, and the replacement of the halogen lamp becomes easy.
- FIG. 1 is a schematic configuration diagram showing a mixture identification system according to one embodiment.
- FIG. 2 is a cross-sectional view showing a part of the lamp housing of FIG.
- FIG. 3 is a detailed view of the inside of the lampno and ousing shown in FIG.
- FIG. 4 is a block diagram specifically showing the processing apparatus of FIG. 1.
- FIG. 5 A diagram showing variations in sensitivity of individual light receiving elements in an optical line sensor.
- FIG. 6 is a graph for explaining the function of the compensator of FIG.
- FIG. 7 is a side view showing the lamp housing with the calibration plate positioned at the operating position.
- FIG. 8 is a graph showing infrared spectral reflection characteristics of tobacco raw materials and foreign substances.
- FIG. 9 is a diagram showing a modified signal conversion apparatus.
- FIG. 10 is a view showing a processing apparatus of a modified example.
- FIG. 11 is a diagram for explaining an output conversion function of the processing apparatus of FIG. 11.
- FIG. 12 is a graph showing infrared spectral reflection characteristics for young shoots and foreign matters.
- FIG. 13 is a graph showing infrared spectral reflection characteristics of a complex such as a diaper or sanitary product and its constituent elements.
- FIG. 1 shows a mixture identification system, which is used, for example, to detect contaminants contained in tobacco materials.
- the identification system shown in FIG. 1 includes a transfer path for tobacco material T, that is, a transfer conveyor 2.
- the transfer conveyor 2 extends horizontally and transfers the tobacco material T at a predetermined speed in the direction of arrow A in FIG.
- the tobacco raw material T is one of the conventional, burre, oriental and yellow tobacco leaves, or a mixture of these tobacco leaves, and the tobacco raw material T is thinly distributed on the transfer conveyor 2. It is in the state that was done.
- the above-obtained tobacco material T is contaminated with the above-mentioned harvested tobacco raw material T, where the expected contaminant is the packaging material used for packing tobacco leaves.
- Synthetic resin materials such as string, urethane foam used for cigarette leaf packaging boxes and moisture-proof paper debris that forms the lining of the packaging box, cigarette raw material ⁇ is a mixture of tobacco leaves and impurities .
- a camera assembly 4 is arranged above the transfer conveyor 2, and the camera assembly 4 includes an irradiation device 6, a cooling device 8, an infrared camera device 10, and a signal conversion device 12.
- the irradiation device 6 is disposed at the lower part of the camera assembly 4 and includes a lamp knowing 14.
- the lamp housing 14 includes a lower surface directed toward the transfer conveyor 2, and the lower surface has a glass window 16 having heat resistance.
- the glass window 16 includes an opening 18 formed on the lower surface of the lamp nosing 14 and a heat-resistant glass plate 20 that closes the opening 18. Is positioned in the lamp housing 14. More specifically, the glass window 16 is disposed in the lamp nosing 14 and includes a window frame 22 that surrounds the glass plate 20, a holding plate 24 that holds down the window frame 22 and the glass plate 20, and the window frame 22 and the glass plate 20. And the holding plate 24 26a, and a packing 26b sandwiched between the glass plate 20 and the inner surface of the lamp housing 14.
- a cooling device 8 is arranged on the left side of the lamp knowing 14 adjacent to the lamp knowing 14, and the cooling device 8 has a cooling box 26.
- the cooling box 26 and the lamp housing 14 are connected to each other via a heat exchanger 28 and a circulation fan 30. These heat exchange ⁇ 28 and the circulation fan 30 are used as a cooling unit for the irradiation device 8. Is done.
- a cooling water supply pipe 34 and a return pipe 36 are connected to the heat exchanger 28, respectively, and these pipes 34 and 36 extend through the cooling box 26 to the cooling water supply source.
- the supply source supplies cooling water having a constant temperature to the heat exchange through the water supply pipe 34, while receiving the cooling water supplied to the heat exchange 28 through the return pipe 36. That is, the supply source circulates the cooling water through the heat exchanger 28, whereby the heat exchanger 28 cools the cooling air in the cooling box 26 and keeps it below a certain temperature.
- the circulation fan 30 introduces the cooling air in the cooling box 26 into the lamp housing 14.
- the air in the lamp nosing 14 is returned to the cooling box 26 through the heat exchanger 28. Therefore, the cooling air can circulate between the cooling box 26 and the lamp knowing 14.
- circulation fan 30 supplies cooling air into lamp housing 14 such that the internal pressure of lamp housing 14 is always higher than the atmospheric pressure outside lamp housing 14. Therefore, the inside of the lamp nosing 14 is in a pressurized state, and no outside air enters the lamp nosing 14. As a result, dust does not accumulate on the glass window 16, that is, the inner surface of the glass plate 20.
- an air injection unit 38 is attached to the lower surface of the cooling box 26.
- the air injection unit 38 receives supply of compressed air from an air pressure source (not shown) and ejects this compressed air along the outer surface of the glass plate 20 as indicated by an arrow B in FIG.
- Such a jet of compressed air prevents dust from adhering to the outer surface of the glass plate 30, and as a result, the inner and outer surfaces of the glass plate 20 are always maintained in a clear state.
- a pair of lamp units 40 are arranged in the lamp housing 14. Details of the lamp housing 14 are shown in FIG.
- the lamp knowing 14 extends in a direction transverse to the transfer conveyor 2 and has open ends. These openings can be opened and closed by a lid (not shown).
- the lid is hinged to the lamp housing 14.
- a pair of unit holders 42 are arranged in the lamp housing 14, and these unit holders 42 extend in the lamp housing 14 in the transverse direction of the transfer conveyor 2.
- Holder brackets 44 are arranged on both end sides of each unit holder 42, and these holder brackets 44 support the corresponding ends of the pair of unit holders 42, while being attached to the lamp housing 14 so as to be movable up and down. It has been.
- each holder bracket 44 extends in the traveling direction of the transfer conveyor 2 across the opening of the lamp housing 14 and has both ends supported by the lamp housing 14 via screw blocks 46.
- Each screw block 46 is fixed to the end surface of the lamp housing 14 and has a block 48 having a screw hole penetrating in the vertical direction, and a screw rod 50 screwed into the screw hole of the block 48 and penetrating the block 48.
- the end of the bracket 44 is supported by the upper end of the screw rod 50.
- each holder bracket 46 is fixed to the lamp nosing 14 with a set screw (not shown).
- Each unit holder 42 includes a slide mechanism at a lower portion thereof, and this slide mechanism has a slider 52.
- the slider 52 is slidable in the longitudinal direction of the unit holder 42, that is, in a direction crossing the transfer conveyor 2, and has an end surface exposed from the unit holder 42.
- the corresponding lamp unit 40 is attached to each slider 52.
- the lamp unit 40 includes a straight tubular halogen lamp 54 and a reflection plate 56 covering the halogen lamp 54, and the reflection plate 56 reflects infrared light emitted from the halogen lamp 54 toward the transfer conveyor 2. Can do.
- the halogen lamp 54 and the reflector 56 extend in the transverse direction of the transfer conveyor 2 and can cover the entire width of the transfer conveyor 2.
- the lamp unit 40 described above is The slider 52 can be extracted from the lamp nosing 14 through the opening, and the extracted lap unit 40 can be mounted again at a predetermined position in the lamp nosing 14.
- a handle 58 is attached to each end face of each slider 52 as shown in FIG.
- the pair of lamp units 40 are respectively arranged on the upstream side and the downstream side of the transfer conveyor 2 across the inspection line IL, and the inspection line IL is located at a predetermined position on the transfer conveyor 2. And extends in the transverse direction of the transfer conveyor 2.
- the pair of lamp units 40 emit infrared light from the halogen lamp 54, and the emitted infrared light is reflected directly or by the reflection plate 56 and condensed on the inspection line IL.
- a surface connecting the axis of the halogen lamp 54 of each lamp unit 40 and the inspection line IL is indicated by L, and the inspection line IL is
- the passing vertical plane is indicated by VP
- the plane L is inclined at a predetermined angle with respect to the vertical plane VP, and the angle oc between the two planes L is, for example, 60 °.
- the vertical plane VP extends through the gap G between the pair of lamp units 40. Therefore, when the infrared light from the pair of lamp units 40 passes through the glass window 16 and is irradiated on the tobacco raw material T on the transfer conveyor 2, a part of the infrared light reflected by the tobacco raw material T is Passing through the glass window 16, it is possible to direct upward force along the vertical plane VP between the pair of lap units 40.
- the above-described infrared camera device 10 includes a camera housing 59, and the mirror housing 59 is disposed on the lamp housing 14.
- a mirror box 60 is disposed in the camera housing 59, and the mirror box 60 accommodates a pair of dichroic mirrors 62 and 64 as spectroscopic mirrors. These mirrors 62 and 64 are arranged to form a lateral V-shape, and the mirror 62 is positioned below the mirror 64.
- a lens barrel 66 extends downward from the mirror box 60 and has a lower end projecting into the lamp housing 14.
- the dichroic mirrors 62 and 64 and the lens barrel 66 are positioned on the above-described vertical plane VP, and therefore are reflected by the tobacco material T and are directed upward along the vertical plane VP. light Can enter the dichroic mirror 62 through the lens barrel 66.
- the dichroic mirror 62 reflects infrared light having a longer wavelength of 1825 nm or more as a reflected light beam, while passing infrared light having a shorter wavelength than 1825 light. Let it pass as a beam.
- the reflected light beam from the dichroic mirror 62 is incident on the infrared filter 70 through the lens barrel 68.
- the infrared filter 70 passes infrared light having a wavelength of 1940 nm from the reflected light beam, and this infrared light is incident on the optical line sensor 72. To do.
- the passing light beam that has passed through the dichroic mirror 62 is incident on the dichroic mirror 64.
- the dichroic mirror 64 reflects a light beam having a longer wavelength of 1625 nm or more as a reflected light beam among the passing light beams, and allows a light beam having a wavelength shorter than 1625 nm to pass as a passing light beam.
- the reflected light beam from the dichroic mirror 64 is incident on the infrared filter 76 through the lens barrel 74.
- the infrared filter 76 passes infrared light having a wavelength of 1720 nm, and this infrared light is incident on the optical line sensor 78.
- the passing light beam of the dichroic mirror 64 force enters the infrared filter 82 through the lens barrel 80.
- the infrared filter 82 passes infrared rays having a wavelength of 1550 nm, and the infrared rays are incident on the optical line sensor 84.
- the infrared filters 70, 76, 82 described above are detachably attached to the corresponding lens barrels.
- Each of the optical line sensors 72, 78, 84 includes a large number of light receiving elements (not shown), and these light receiving elements are arranged in a row adjacent to each other, and each outputs an electric signal corresponding to the amount of incident infrared light. appear. More specifically, each optical line sensor extends in the transverse direction of the transfer conveyor 2 and has a length equal to or greater than the width of the transfer conveyor 2. Therefore, each optical line sensor can receive an infrared ray of a corresponding wavelength from the infrared light reflected from the whole area force of the tobacco raw material T on the inspection line IL by the light receiving element.
- the electrical signals generated by the light receiving elements of the optical line sensors 72, 78, and 84 are used as data for creating an image of the tobacco material T that has passed through the inspection line IL.
- the electrical signals from the respective light receiving elements are used.
- the signal corresponds to one pixel in the image.
- Each of the dichroic mirrors 62 and 64 and the lens barrels 66, 68, 74, and 80 extends in the width direction of the transfer conveyor 2, and the dichroic mirror is longer than the width of the transfer conveyor 2.
- the mirror copper has an aperture width equal to or greater than the width direction of the transfer conveyor 2.
- the Kagamitsuki 66, 68, 74, and 80 have built-in condenser lenses (not shown).
- the optical line sensors 72, 78, 84 are electrically connected to the signal conversion device 12 described above.
- the signal converter 12 includes three processing circuits 86, which process the electrical signals from the corresponding optical line sensors. Further, the signal converter 12 further includes a DC power source 87 connected to each halogen lamp 54 of the lamp unit 40 described above, and a cooler 89 disposed outside the housing, and the cooler 89 is a signal converter. 12 is cooled.
- FIG. 4 shows an example of the processing circuit 86.
- the processing circuit 86 has an AZD transformation 88, which is electrically connected to the corresponding line sensor!
- the AZD converter 88 receives an analog electrical signal generated by each light receiving element of the optical line sensor, converts the received electrical signal into a digital electrical signal X, and supplies the electrical signal X to the next compensator 90. To do.
- the compensator 90 corrects the electric signals X corresponding to the individual light receiving elements, generates electric signals Y, and supplies the electric signals Y to the output buffer memory 92.
- the output buffer memory 92 outputs the electric signal Y to the determination circuit 96 outside the signal converter 12 via the digital output driver 94.
- each light receiving element to infrared rays is not uniform, and it is also difficult for the irradiation device 8 to uniformly illuminate the tobacco material T distributed over the entire area of the inspection line IL. Therefore, when a reference plate that uniformly reflects infrared light is placed on the inspection line IL, the electrical signal X generated from each light receiving element of the optical line sensor is as shown by the solid line in FIG. The output level of the electric signal X indicates the sensitivity of the light receiving element to infrared light.
- the broken line in FIG. 5 represents the illuminance distribution of the infrared light irradiated on the inspection line IL by the irradiation device 8.
- the straight tube halogen lamp 54 described above also emits its central force. Compared with infrared light, the infrared light emitted from both ends is weakened.
- a and ⁇ represent gain and offset values specific to each light receiving element.
- the gain oc is determined to compensate for the output level of the electric signal X between the light receiving elements, and is a unique value set for each light receiving element.
- the electric signal ⁇ ⁇ corresponding to each light receiving element output from the compensator 90 described above is as shown in FIG. Has a certain output level.
- the offset value 13 is set in order to eliminate the adverse effect of infrared light reflected by guide frames (not shown) extending on both sides of the transfer conveyor 2.
- the offset value j8 is assigned only to a predetermined number of light receiving elements included at both ends of the optical line sensor in the row of light receiving elements in the optical line sensor, and is output from these light receiving elements. It has a value sufficient to cancel the electrical signal X. Therefore, as shown in Fig. 6, the output distribution of the electric signal Y has dead bands on both sides thereof.
- the compensator 90 is electrically connected to the non-volatile memory 98 in order to enable the correction processing in the compensator 90 described above, and this memory 98 should be assigned to each light receiving element.
- the gain ⁇ and offset value j8 are stored. Accordingly, by supplying the gain signal and the offset value ⁇ 8 corresponding to each light receiving element from the memory 98 to the compensator 90 with respect to the electric signal X of each light receiving element, the compensator 90 is based on the above formula.
- the electric signal X can be corrected and the corrected electric signal Y can be output.
- the gain ⁇ and the offset value j8 are stored in the memory 98 by using the setting device 100, and the setting device 100 can rewrite the gain ⁇ and the offset value
- the infrared camera device 10 includes a calibration plate 102 used as the reference plate described above.
- the calibration plate 102 can be disposed on the inspection line IL as necessary.
- a pair of guide rails 104 are attached to the outer surface of the lamp housing 14, and these guide rails 104 are arranged on the side of the transfer conveyor 2. Seen in the direction of the cut, they are installed at both ends of the lamp housing 14; Each guide rail 104 has an L shape, and the lower surface force of the lamp housing 14 extends over the side wall. Each guide rail 104 guides the traveling of the chain 106, and brackets 108 are attached to the chains 106, respectively. These brackets 108 protrude toward the outside of the lamp housing 14 and are connected to each other via a connecting plate 110. As is apparent from FIG. 7, the connecting plate 110 extends in the longitudinal direction of the lamp housing 14 (the width direction of the transfer conveyor 2), and holds the calibration plate 102 described above on the upper surface thereof.
- the calibration plate 102 is formed with a material force that uniformly reflects infrared light and is not easily subjected to thermal deformation.
- the calibration plate 102 is also formed with Tef mouth, peak material or ceramic force.
- the calibration plate 102 when the calibration plate 102 is in the operating position on the inspection line IL, the calibration plate 102 may uniformly reflect the infrared light emitted from the irradiation device 6. it can. Therefore, the infrared light reflected from the calibration plate 102, that is, the above-described infrared light is received by the individual light receiving elements of the respective line sensors, and based on the output level of the electric signal X from these light receiving sensors, the individual light is received. The gain a to be assigned to the light receiving element is determined.
- the calibration plate 102 is used not only for the initial setting of the gain ⁇ described above, but also in consideration of the deterioration of the sensitivity of individual light receiving elements over time, the gain ⁇ is periodically reset. Also used to do.
- the determination circuit 96 described above outputs the image data obtained from the output from the processing circuit 86 described above, that is, infrared rays of the first wavelength (1550 nm), the second wavelength (1720 nm), and the third wavelength (1940 nm). Din, D2n, D3n are received, and based on these image data, tobacco raw material T Detects impurities. Note that the subscript n of the image data represents the element number of the light receiving element in the optical line sensor as a representative.
- the infrared rays from the first wavelength to the third wavelength are detected from the tobacco raw material T based on the difference between the infrared reflectance of the tobacco raw material T and the infrared reflectance of the foreign material T, that is, the identification thereof. Separately, the optimal combination is selected.
- the tobacco raw material T has the same spectral reflection characteristics as shown by the solid lines T1 to T4 in FIG. 8, while the above-mentioned impurities are broken lines in FIG. It has spectral reflection characteristics as shown by (F1), a one-dot chain line (F2), and a two-dot chain line (F3).
- ⁇ 1 to ⁇ 4 indicate the native, burre, oriental, and yellow tobacco leaves, respectively
- F1 to F3 indicate the synthetic resin materials such as wrapping and string, urethane foam, and moisture-proof paper, respectively. is doing.
- the infrared reflectance from the tobacco raw materials T1 to T4 and the infrared reflectance from the contaminants F1 to F3 are clearly different when viewed with infrared rays of the first wavelength.
- the determination circuit 96 can detect, that is, identify the contaminants in the tobacco cocoon.
- the determination circuit 96 can also handle the image data Din, D2n, D3n as pseudo RGB signals. In this case, the determination result is displayed on a display device (not shown) as a pseudo color image. I'll do it.
- the decision circuit 96 receives the three outputs of the signal converter 1 in parallel.
- the signal converter 12 shown in FIG. 9 further includes a switch circuit 112 between the determination circuit 96 and the processing circuit 86, and the switch circuit 112 receives the three outputs of the processing circuit 86 as a determination circuit. Supplied serially to 96.
- the determination circuit 96 detects contaminants in the tobacco material T based on the outputs of the processing circuit 86, and the determination result can be sequentially displayed as a monochrome image on the display device.
- processing circuit 86 can be replaced with the processing circuit 114 of FIG. Processing circuit 114 A function for correcting the electric signal X from the above-described line sensors 72, 78, and 84 to an electric signal Y.
- the electric signal Y is determined for a predetermined time as shown in FIG. It has an output conversion function 118 that keeps outputting to 96.
- the determination circuit 96 can detect impurities in a predetermined spot area of the tobacco raw material T in the same manner while the transfer of the tobacco raw material T is stopped.
- FIG. 12 shows the harvested young shoots, impurities that may be mixed in the young shoots, specifically the infrared spectral reflection characteristics of green or gray tenji threads, and the Infrared rays of 1st to 3rd wavelengths (1300nm, 1730nm, 1940nm) suitable for the detection of foreign substances are shown.
- FIG. 13 shows the infrared spectral reflection characteristics of composites such as diapers and sanitary products, and the components (paper, nonwoven fabric, polymer) of these composites, and suitable for identifying the components. Infrared rays of 1st to 3rd wavelengths (1600nm, 1750nm, 1940nm) are shown.
- the determination circuit can identify the arrangement and distribution state of each component in the complex, and based on the identification result, product quality control is possible.
- the infrared of the third wavelength (1940) is commonly used for the detection of impurities from the raw materials and the identification of the components in the complex.
- This infrared of the third wavelength is well absorbed by moisture in the material, which is useful in distinguishing between materials that contain moisture and materials that do not contain moisture.
- the identification system of the present invention can use a combination of an infrared ray with a third wavelength and an infrared ray with a wavelength other than the first and second wavelengths.
- the number is not limited to three, and it is needless to say that four or more infrared rays having different wavelengths are used when there are many kinds of contaminants to be detected and target materials to be identified.
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800477673A CN101341392B (zh) | 2005-11-16 | 2006-11-08 | 混合物的识别系统 |
CA 2629292 CA2629292C (en) | 2005-11-16 | 2006-11-08 | Mixture identification system |
EP06823186.9A EP1950554A4 (en) | 2005-11-16 | 2006-11-08 | MIXING IDENTIFICATION SYSTEM |
JP2007545205A JP4777359B2 (ja) | 2005-11-16 | 2006-11-08 | 混合物の識別システム |
US12/153,242 US7812953B2 (en) | 2005-11-16 | 2008-05-15 | Mixture identification system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005331531 | 2005-11-16 | ||
JP2005-331531 | 2005-11-16 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/153,242 Continuation US7812953B2 (en) | 2005-11-16 | 2008-05-15 | Mixture identification system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007058102A1 true WO2007058102A1 (ja) | 2007-05-24 |
Family
ID=38048489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/322282 WO2007058102A1 (ja) | 2005-11-16 | 2006-11-08 | 混合物の識別システム |
Country Status (10)
Country | Link |
---|---|
US (1) | US7812953B2 (ja) |
EP (1) | EP1950554A4 (ja) |
JP (1) | JP4777359B2 (ja) |
CN (1) | CN101341392B (ja) |
CA (1) | CA2629292C (ja) |
MY (1) | MY143686A (ja) |
RU (1) | RU2387975C2 (ja) |
TW (1) | TW200730815A (ja) |
UA (1) | UA91387C2 (ja) |
WO (1) | WO2007058102A1 (ja) |
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JP2015081821A (ja) * | 2013-10-22 | 2015-04-27 | 東都フォルダー工業株式会社 | 布類の検査装置における検査部浄化装置 |
WO2016063439A1 (ja) * | 2014-10-23 | 2016-04-28 | 株式会社プレックス | 外観検査装置 |
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JP2018194397A (ja) * | 2017-05-16 | 2018-12-06 | 株式会社クボタ | 測定装置 |
JP2019056655A (ja) * | 2017-09-22 | 2019-04-11 | 東芝ライテック株式会社 | 検知装置 |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100091089A1 (en) * | 2008-10-15 | 2010-04-15 | Brian Cromwell | Infrared camera filter wheel systems and methods |
US8223206B2 (en) * | 2008-10-15 | 2012-07-17 | Flir Systems, Inc. | Infrared camera filter wheel systems and methods |
JP2010217149A (ja) * | 2009-03-19 | 2010-09-30 | Tokyo Institute Of Technology | 対象識別装置 |
JP2012173174A (ja) * | 2011-02-22 | 2012-09-10 | Sumitomo Electric Ind Ltd | 異状判定装置及び異状判定方法 |
JP2015081821A (ja) * | 2013-10-22 | 2015-04-27 | 東都フォルダー工業株式会社 | 布類の検査装置における検査部浄化装置 |
JP2016085050A (ja) * | 2014-10-23 | 2016-05-19 | 株式会社プレックス | 外観検査装置 |
WO2016063439A1 (ja) * | 2014-10-23 | 2016-04-28 | 株式会社プレックス | 外観検査装置 |
JP2016170150A (ja) * | 2015-03-16 | 2016-09-23 | 株式会社イシダ | 検査装置 |
JP2017015488A (ja) * | 2015-06-30 | 2017-01-19 | 株式会社ニコン | 撮像装置 |
JP2018194397A (ja) * | 2017-05-16 | 2018-12-06 | 株式会社クボタ | 測定装置 |
JP7034604B2 (ja) | 2017-05-16 | 2022-03-14 | 株式会社クボタ | 測定装置 |
JP2019056655A (ja) * | 2017-09-22 | 2019-04-11 | 東芝ライテック株式会社 | 検知装置 |
TWI795391B (zh) * | 2017-09-22 | 2023-03-11 | 日商東芝照明技術股份有限公司 | 偵測裝置 |
JP2019148607A (ja) * | 2019-06-12 | 2019-09-05 | Jfeテクノリサーチ株式会社 | 検査装置 |
JP2020122802A (ja) * | 2020-05-11 | 2020-08-13 | 東芝ライテック株式会社 | 検知装置 |
Also Published As
Publication number | Publication date |
---|---|
MY143686A (en) | 2011-06-30 |
CN101341392B (zh) | 2012-01-25 |
UA91387C2 (uk) | 2010-07-26 |
JPWO2007058102A1 (ja) | 2009-04-30 |
JP4777359B2 (ja) | 2011-09-21 |
RU2387975C2 (ru) | 2010-04-27 |
CA2629292A1 (en) | 2007-05-24 |
TW200730815A (en) | 2007-08-16 |
EP1950554A4 (en) | 2014-04-09 |
RU2008123878A (ru) | 2009-12-27 |
US7812953B2 (en) | 2010-10-12 |
CA2629292C (en) | 2011-07-12 |
CN101341392A (zh) | 2009-01-07 |
EP1950554A1 (en) | 2008-07-30 |
US20080316483A1 (en) | 2008-12-25 |
TWI329198B (ja) | 2010-08-21 |
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