WO2021153235A1 - 穀粒判別器 - Google Patents

穀粒判別器 Download PDF

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Publication number
WO2021153235A1
WO2021153235A1 PCT/JP2021/000910 JP2021000910W WO2021153235A1 WO 2021153235 A1 WO2021153235 A1 WO 2021153235A1 JP 2021000910 W JP2021000910 W JP 2021000910W WO 2021153235 A1 WO2021153235 A1 WO 2021153235A1
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WO
WIPO (PCT)
Prior art keywords
light
lens
light source
grain
plate member
Prior art date
Application number
PCT/JP2021/000910
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
池田　学
Original Assignee
株式会社サタケ
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 株式会社サタケ filed Critical 株式会社サタケ
Priority to CN202180011012.2A priority Critical patent/CN115004015A/zh
Priority to BR112022015087A priority patent/BR112022015087A2/pt
Publication of WO2021153235A1 publication Critical patent/WO2021153235A1/ja

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    • 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
    • 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

Definitions

  • the present invention relates to a grain discriminator for discriminating the quality of grains.
  • Patent Document 1 discloses a grain discriminator that irradiates the lower surface of a transparent tray with light from a light source arranged on the side of the transparent tray via a reflector.
  • An object of the present invention is to provide a grain discriminator capable of suppressing unevenness in the intensity of light applied to grains.
  • the grain discriminator has a light source, a lens that collects the light emitted by the light source, a reflecting part that reflects the light collected by the lens, and a light transmitting part, and the light reflected by the reflecting part is reflected on the lower surface. It is provided with a receiving plate member.
  • FIG. 2 is a view taken along the line AA of FIG. It is a partially enlarged view of FIG. It is a figure which shows the direction of the maximum luminous intensity of the light emitted from an aperture. It is a figure which shows the illuminance of the light which a plate member receives. It is a figure which shows the direction of the maximum luminous intensity of the light emitted from an aperture. It is a figure which shows the illuminance of the light which a plate member receives in 1st Embodiment.
  • FIG. 1 is a perspective view showing a grain discriminator according to the first embodiment.
  • the grain discriminator 1 is a device for irradiating grains with light, and is used for discriminating the quality of grains such as rice, wheat, beans, and corn.
  • the grain discriminator 1 includes a main body 2 and a plate member 3.
  • the main body 2 is formed in a box shape, for example.
  • the main body 2 contains various devices for irradiating light toward the lower surface of the plate member 3.
  • the plate member 3 is a member for placing grains to be discriminated.
  • the plate member 3 is formed in a plate shape.
  • the plate member 3 is installed on the upper surface of the main body 2.
  • the plate member 3 is made of, for example, a transparent synthetic resin.
  • the plate member 3 may be made of a light-transmitting material.
  • FIG. 2 is a plan view showing the grain discriminator 1 of the first embodiment.
  • the main body 2 is formed in a rectangular shape in a plan view, for example.
  • the shape of the main body 2 is not limited to a rectangle in a plan view, and may be formed into a polygon such as a circle, a triangle, or a hexagon.
  • the plate member 3 is formed in a circular shape in a plan view, for example.
  • the shape of the plate member 3 is not limited to a circular shape in a plan view, and may be formed into an elliptical shape or a polygonal shape.
  • FIG. 3 is a view taken along the line AA of FIG.
  • the main body 2 includes a light source accommodating portion 4, a lens 5, and a reflecting portion 6 inside.
  • the light source accommodating portion 4 is a horizontally long member arranged along the inner side surface of the main body 2.
  • the light source accommodating portion 4 is arranged along all four inner surfaces of the main body 2. However, the light source accommodating portion 4 may be arranged along at least one inner surface of the plurality of inner surfaces.
  • the lens 5 is arranged so as to be adjacent to each light source accommodating portion 4 in the inner direction of the main body 2 when viewed from each light source accommodating portion 4.
  • the reflecting portion 6 is arranged in the center of the inside of the main body 2 and parallel to the bottom surface of the main body 2. That is, the light source accommodating portion 4 is arranged so as to surround the reflecting portion 6 in the peripheral region of the reflecting portion 6.
  • FIG. 4 is a partially enlarged view of FIG.
  • the light source accommodating portion 4 is a member accommodating the light source 7.
  • the light source accommodating portion 4 has a mounting portion 41, a first light guide portion 42, and a second light guide portion 43.
  • the mounting portion 41 has a mounting surface 411 to which the light source 7 is mounted.
  • One or more light sources 7 are mounted on the mounting surface 411.
  • the mounting surface 411 is a surface that reflects light and guides this light to the lens 5.
  • the mounting surface 411 is, for example, a white glossy surface.
  • the mounting surface 411 is, for example, a flat surface.
  • the mounting surface 411 is directed outward and diagonally downward of the main body 2 when the grain discriminator 1 is placed on a horizontal plane.
  • the first light guide portion 42 is a portion connected to the upper end of the mounting portion 41.
  • the first light guide unit 42 has a first light guide surface 421 that reflects light.
  • the first light guide surface 421 is, for example, a white glossy surface.
  • the first light guide surface 421 is, for example, a flat surface.
  • the first light guide surface 421 and the mounting surface 411 are connected to the mounting portion 41 so as to form a right angle, for example.
  • the second light guide unit 43 is a portion connected to the lower end of the first light guide unit 42.
  • the second light guide unit 43 has a second light guide surface 431 that reflects light at a position facing the mounting surface 411.
  • the second light guide surface 431 is, for example, a white glossy surface.
  • the second light guide surface 431 is, for example, a flat surface.
  • the second light guide unit 43 is connected to the first light guide unit 42 so that the second light guide surface 431 forms an acute angle with the first light guide surface 421. Further, the second light guide surface 431 is formed so as to be inclined with respect to the reflecting portion 6.
  • the width of the light source accommodating portion 4 is smaller than that in the case where the second light guide surface 431 is formed parallel to the reflection portion 6. can do.
  • the width of the light source accommodating portion 4 is the width in the horizontal direction of the light source accommodating portion 4 and in the direction orthogonal to the longitudinal direction of the light source accommodating portion 4. That is, it is the width of the light source accommodating portion 4 shown in FIG. 4 in the left-right direction.
  • the first light guide surface 421 and the second light guide surface 431 are arranged so as to form an acute angle, the first light guide surface 421 is connected to the second light guide surface 431 at a right angle.
  • the height of the light source accommodating portion 4 can be lowered as compared with the case where the light source accommodating portion 4 is used. As a result, the grain discriminator 1 can be miniaturized.
  • the mounting surface 411, the first light guide surface 421, and the second light guide surface 431 form a storage space for accommodating the light source 7 according to the above configuration. That is, the mounting surface 411, the first light guide surface 421, and the second light guide surface 431 are each a part of the surface forming the accommodation space for accommodating the light source 7. Further, in the region facing the first light guide surface 421, an elongated hole-shaped opening through which the light emitted by the light source 7 passes is formed.
  • the mounting surface 411, the first light guide surface 421, and the second light guide surface 431 may each be formed of a curved surface. In this case, each surface is formed so as to connect smoothly.
  • the light source 7 is composed of, for example, a fluorescent lamp and an LED (Light Emitting Diode).
  • the light emitted by the light source 7 is reflected once or multiple times on the mounting surface 411, the first light guide surface 421, or the second light guide surface 431, and heads toward the opening.
  • the light that reaches the aperture is incident on the lens 5.
  • the lens 5 is arranged in the opening of the light source accommodating portion 4, and collects the light emitted by the light source 7 and reaches the opening.
  • the lens 5 is, for example, a lens having a convex light receiving surface.
  • the lens 5 is, for example, a cylindrical lens formed in a columnar shape.
  • the reflecting portion 6 is, for example, a member formed in a plate shape having a substantially rectangular shape in a plan view.
  • the length of one side of the reflecting portion 6 is formed to be larger than the diameter of the bottom surface of the plate member 3. Therefore, as shown in FIG. 4, the outer peripheral portion of the reflective portion 6 is located outside the outer peripheral portion of the plate member 3.
  • the reflecting portion 6 can reflect light toward the entire region of the bottom surface of the plate member 3.
  • the bottom surface of the plate member 3 is set to a size that allows the light from the reflecting portion 6 to be received in the entire area of the bottom surface.
  • the plate member 3 shown in FIG. 4 is virtually shown in the main body 2 to indicate the horizontal position of the plate member 3, and is actually placed on the main body 2 as described above. NS.
  • the reflecting unit 6 has a reflecting surface 61 that reflects the light collected by the lens 5 toward the lower surface of the plate member 3.
  • the reflective surface 61 is formed, for example, in black. Further, the reflective surface 61 is formed of a matte surface. As a result, it is possible to prevent the contour of the light source 7 from being reflected on the reflecting surface 61. Further, it is possible to prevent the image of the grains placed on the plate member 3 from being reflected on the reflecting surface 61.
  • the light reflected by the reflecting surface 61 passes through the plate member 3 formed of the transparent synthetic resin and illuminates the grains placed on the plate member 3.
  • the light from the light source accommodating portion 4 arranged along the four inner side surfaces of the main body 2 is sequentially switched to irradiate the lower surface of the plate member 3.
  • the mounting surface 411 faces the outer side of the main body 2 and diagonally downward. That is, the light source 7 emits light in a direction different from the direction in which the reflecting surface 61 is arranged, and the lens 5 is formed by the mounting surface 411, the first light guide surface 421, and the second light guide surface 431. You will receive the reflected light. As a result, the light from the light source 7 is diffused to some extent, so that the contour of the light source 7 can be prevented from being reflected on the reflecting surface 61.
  • FIG. 5 is a diagram showing the direction of the maximum luminous intensity of the light emitted from the aperture.
  • FIG. 5 shows a part of the vertical cross section of the grain discriminator 1 in which the lens is not arranged in the opening of the light source accommodating portion 4.
  • the direction of the maximum luminous intensity of the light emitted from the opening is generally the direction toward the reflection surface 61 parallel to the second light guide surface 431 (pointed by the thick arrow A1).
  • the direction shown That is, the light emitted by the light source 7 illuminates the vicinity of the end of the reflection surface 61 on the light source 7 side, for example, the position l 1 [mm] from the end of the reflection surface 61 most brightly. As a result, the light reflected by the reflecting surface 61 brightly illuminates the light source side of the plate member 3.
  • the thick arrow A2 indicates the direction of the light reflected by the reflecting surface 61.
  • FIG. 6 is a diagram showing the illuminance of the light emitted to the plate member 3 in the grain discriminator 1 having the configuration shown in FIG.
  • the horizontal axis represents the horizontal distance from the light source 7, and the vertical axis represents the illuminance of the light received by the plate member 3.
  • the illuminance is high in the region near the light source 7, and the illuminance is low in the region far from the light source 7. That is, there is a large difference in the illuminance of the received light between both ends of the plate member 3.
  • FIG. 7 is a diagram showing the direction of the maximum luminous intensity of the light emitted from the aperture.
  • FIG. 7 shows a part of the vertical cross section of the grain discriminator 1 in which the lens 5 is arranged at the opening of the light source accommodating portion 4.
  • the lens 5 collects the light passing through the opening and changes the direction in which the light travels.
  • the convex surface between the mounting surface 411 and the second light guide surface 431 serves as the light receiving surface of the lens 5, and the lens 5 receives light on the light receiving surface and changes the direction of the maximum luminous intensity of this light.
  • the lens 5 is arranged so that the direction of the maximum luminous intensity of the light incident on the lens 5 and the direction of the maximum luminous intensity of the light emitted from the lens 5 are different.
  • the direction of the maximum luminous intensity of light (the direction indicated by the thick arrow A1) is the direction of the reflecting surface 61 as compared with the case where the lens 5 is not arranged in the opening. It will be closer to the center. That is, the position on the reflecting surface 61 that is most brightly illuminated is, for example, a position l 2 [mm] from the end of the reflecting surface 61. This l 2 [mm] is a value larger than l 1 [mm] shown in FIG.
  • FIG. 8 is a diagram showing the illuminance of light received by the plate member 3 in the grain discriminator 1 according to the first embodiment shown in FIG. 7.
  • the horizontal axis represents the horizontal distance from the light source 7, and the vertical axis represents the illuminance.
  • the difference in the illuminance of the received light is smaller between both ends of the plate member 3 than in the grain discriminator 1 in which the lens 5 is not arranged in the opening. That is, in the grain discriminator 1 according to the first embodiment, it is possible to suppress the occurrence of unevenness in the intensity of the light applied to the plate member 3.
  • the grains placed on the plate member 3 are more uniformly irradiated with light, so that the grains can be correctly identified.
  • the lens 5 When the lens 5 is arranged in the opening as shown in FIG. 7, the light toward the end of the reflecting surface 61 on the light source side is focused by the lens 5 toward the center of the reflecting surface 61. Therefore, as shown in FIG. 8, the illuminance of the plate member 3 in the region closest to the light source 7 is low.
  • FIG. 9 is a partially enlarged view of a vertical cross section of the grain discriminator 1 of the second embodiment.
  • a gap is provided between the lens 5 and the second light guide surface 431.
  • the grain discriminator 1 according to the second embodiment is the same as the grain discriminator 1 according to the first embodiment.
  • this gap allows light from the accommodation space to pass toward the reflecting portion 6.
  • the light reflected by the reflecting surface 61 without passing through the lens 5 is applied to the lower surface of the plate member 3 through the lens 5 or without passing through the lens 5.
  • the dimension of this gap is set to, for example, about 3 [mm] when a cylindrical lens having a diameter of 15 [mm] is used as the lens 5.
  • the distance between the lower end of the mounting portion 41 and the second light guide surface 431, that is, the dimension between the upper end and the lower end of the opening is 18 [mm] or less.
  • the dimension between the upper end and the lower end of this opening is equal to or smaller than the total value of the diameter of the lens 5 and the dimension of the gap, depending on the size of the lens 5 and the like.
  • FIG. 10 is a diagram showing the illuminance of light received by the plate member 3 in the grain discriminator 1 according to the second embodiment shown in FIG.
  • the horizontal axis represents the horizontal distance from the light source 7, and the vertical axis represents the illuminance.
  • the plate member 3 emits light substantially uniformly over the entire width. receive. That is, in the grain discriminator 1 according to the second embodiment, it is possible to suppress the occurrence of unevenness in the intensity of the light applied to the plate member 3.
  • the grain discriminator 1 in the grain discriminator 1 according to the second embodiment, a gap is provided between the lens 5 and the second light guide surface 431. Therefore, the end of the reflecting surface 61 on the light source 7 side is also directly irradiated with light that does not pass through the lens 5. As a result, the end portion of the plate member 3 on the light source 7 side, that is, the outer peripheral portion of the bottom surface of the plate member 3 is also irradiated with light, and the plate member 3 can receive the light more uniformly over the entire width.
  • the grains placed on the plate member 3 are more uniformly irradiated with light, so that the grains can be correctly identified.
  • FIGS. 7 and 9 show a cylindrical lens having a circular cross section
  • the lens 5 may have a convex light receiving surface.
  • the lens 5 may be a semi-cylindrical lens 5 having a flat exit surface.
  • the cross section of the lens 5 may be formed as an ellipse. That is, the convex shape of the light receiving surface of the lens may be any one having a curved surface.
  • the lens 5 may be a circular convex lens.
  • a plurality of lenses 5 are arranged along the aperture.
  • the lens 5 is formed of a circular convex lens, a gap through which light passing from the opening toward the reflecting surface 61 passes is formed in the vicinity of the contact portion where the lenses 5 are in contact with each other.
  • the light emitted from this gap irradiates the vicinity of the end of the reflecting surface 61 with light. Therefore, the outer peripheral portion of the plate member 3 can be uniformly irradiated with light.
  • the grains placed on the plate member 3 are more uniformly irradiated with light, so that the grains are correctly discriminated.
  • the light source accommodating portion 4 is separately provided inside the main body 2 formed in the box shape of the grain discriminator 1, and the light source 7 is provided, but the present invention is not limited to this.
  • a light source may be provided inside the main body to form a light source accommodating portion.
  • the inside of the main body containing the light source forms an accommodation space for accommodating the light source, which corresponds to the light source accommodating portion of the present invention.

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  • Physics & Mathematics (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 Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Threshing Machine Elements (AREA)
  • Sorting Of Articles (AREA)
PCT/JP2021/000910 2020-01-29 2021-01-13 穀粒判別器 WO2021153235A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180011012.2A CN115004015A (zh) 2020-01-29 2021-01-13 谷粒判别器
BR112022015087A BR112022015087A2 (pt) 2020-01-29 2021-01-13 Discriminador de grãos

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-012803 2020-01-29
JP2020012803A JP7404895B2 (ja) 2020-01-29 2020-01-29 穀粒判別器

Publications (1)

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WO2021153235A1 true WO2021153235A1 (ja) 2021-08-05

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PCT/JP2021/000910 WO2021153235A1 (ja) 2020-01-29 2021-01-13 穀粒判別器

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JP (1) JP7404895B2 (pt)
CN (1) CN115004015A (pt)
BR (1) BR112022015087A2 (pt)
TW (1) TW202130990A (pt)
WO (1) WO2021153235A1 (pt)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4517549Y1 (pt) * 1966-06-07 1970-07-18
JPH10311797A (ja) * 1997-05-09 1998-11-24 Kett Electric Lab 米粒透視器
JPH1127457A (ja) * 1997-06-30 1999-01-29 Canon Inc カラー画像読取装置
JPH11142341A (ja) * 1997-11-10 1999-05-28 Kett Electric Lab 穀類粒観察装置
KR100619500B1 (ko) * 2006-06-26 2006-09-06 김한중 쌀 도정도 감정기
JP2014173884A (ja) * 2013-03-06 2014-09-22 Satake Corp 穀粒透視器
JP2017150823A (ja) * 2016-02-22 2017-08-31 株式会社サタケ 粒状物外観品位判別装置
JP2020026963A (ja) * 2018-08-09 2020-02-20 株式会社サタケ 穀粒品位判別装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1925595A (en) * 1994-02-18 1995-09-04 Imedge Technology, Inc. Method of producing and detecting high-contrast images of the surface topography of objects and a compact system for carrying out the same
JP2008038752A (ja) 2006-08-07 2008-02-21 Matsushita Electric Ind Co Ltd 電動送風機およびこれを用いた電気掃除機
KR101360507B1 (ko) * 2006-09-29 2014-02-07 가부시키가이샤 니콘 이동체 시스템, 패턴 형성 장치, 노광 장치 및 노광 방법, 그리고 디바이스 제조 방법
JP2014115151A (ja) 2012-12-07 2014-06-26 Shimadzu Corp 光イメージング装置
JP2015007611A (ja) 2013-05-30 2015-01-15 株式会社リコー 付着物検出装置、ワイパー装置及び移動体
JP2019168305A (ja) 2018-03-23 2019-10-03 英寿 浅原 Ｏリング外観検査装置、物体外観検査装置、照明装置、外観検査方法、ｏリング製造方法及び物体製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4517549Y1 (pt) * 1966-06-07 1970-07-18
JPH10311797A (ja) * 1997-05-09 1998-11-24 Kett Electric Lab 米粒透視器
JPH1127457A (ja) * 1997-06-30 1999-01-29 Canon Inc カラー画像読取装置
JPH11142341A (ja) * 1997-11-10 1999-05-28 Kett Electric Lab 穀類粒観察装置
KR100619500B1 (ko) * 2006-06-26 2006-09-06 김한중 쌀 도정도 감정기
JP2014173884A (ja) * 2013-03-06 2014-09-22 Satake Corp 穀粒透視器
JP2017150823A (ja) * 2016-02-22 2017-08-31 株式会社サタケ 粒状物外観品位判別装置
JP2020026963A (ja) * 2018-08-09 2020-02-20 株式会社サタケ 穀粒品位判別装置

Also Published As

Publication number Publication date
CN115004015A (zh) 2022-09-02
JP7404895B2 (ja) 2023-12-26
TW202130990A (zh) 2021-08-16
BR112022015087A2 (pt) 2022-09-20
JP2021117201A (ja) 2021-08-10

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