WO2012098682A1 - Dispositif d'éclairage et procédé d'éclairage pour appareil d'inspection de qualité externe pour produits agricoles - Google Patents

Dispositif d'éclairage et procédé d'éclairage pour appareil d'inspection de qualité externe pour produits agricoles Download PDF

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Publication number
WO2012098682A1
WO2012098682A1 PCT/JP2011/051114 JP2011051114W WO2012098682A1 WO 2012098682 A1 WO2012098682 A1 WO 2012098682A1 JP 2011051114 W JP2011051114 W JP 2011051114W WO 2012098682 A1 WO2012098682 A1 WO 2012098682A1
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WIPO (PCT)
Prior art keywords
light
agricultural product
produce
point
lighting
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PCT/JP2011/051114
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English (en)
Japanese (ja)
Inventor
芳徳 武田
Original Assignee
株式会社ニレコ
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Filing date
Publication date
Application filed by 株式会社ニレコ filed Critical 株式会社ニレコ
Priority to KR1020127030720A priority Critical patent/KR101740087B1/ko
Priority to JP2012553536A priority patent/JP5610550B2/ja
Priority to PCT/JP2011/051114 priority patent/WO2012098682A1/fr
Priority to CN201180035446.2A priority patent/CN103003687B/zh
Publication of WO2012098682A1 publication Critical patent/WO2012098682A1/fr

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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
    • 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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G01N33/025—Fruits or vegetables
    • 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
    • G01N2021/845—Objects on a conveyor
    • 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
    • G01N2021/8466—Investigation of vegetal material, e.g. leaves, plants, fruits

Definitions

  • the present invention relates to a lighting device and a lighting method for irradiating agricultural products with light, which are used in a device for inspecting the external quality of fruits and other agricultural products.
  • FIG. 20 is a schematic diagram of the inspection apparatus described in the publication.
  • the inspection apparatus 10 described in FIG. 20 detects the agricultural product 14 every time the agricultural product 14 passes by the conveyor 12 that continuously conveys the agricultural product 14 (for example, grapefruit or mandarin orange) that is the inspection object, and detects the detection signal.
  • Photosensor 16 that emits light, five CCD cameras 18 that image agricultural products 14 from five directions, and light irradiation that irradiates the agricultural products 14 that are disposed adjacent to each CCD camera 18 and pass over the conveyor 12. It comprises means 20 and a control device 22 for operating the electronic shutter of each CCD camera 18 in accordance with the detection signal from the photoelectric sensor 16.
  • One of the five CCD cameras 18 is arranged to image the conveyed agricultural product 14 from above, and the other four are configured to image the conveyed agricultural product 14 from the side. They are arranged in one horizontal plane with a 90 degree interval therebetween.
  • the inspection device 10 operates as follows.
  • Agricultural products 14 are placed on the conveyor 12 at regular intervals and continuously conveyed.
  • the photoelectric sensor 16 transmits a detection signal to the control device 22 every time the agricultural product 14 passes.
  • the control device 22 presses the electronic shutter of each CCD camera 18 after a certain time has elapsed since receiving the detection signal, that is, when the agricultural product 14 to be imaged reaches the imaging point of each CCD camera 18 from the photoelectric sensor 16. Activate and take an image of the produce 14.
  • control device 22 performs image processing of the still image of the agricultural product 14 obtained in this way, and determines the external quality of each agricultural product 14 according to the processing result.
  • the inspection apparatus 10 is configured to irradiate the agricultural product 14 with light not only from above but also from the side.
  • the amount of light applied to the agricultural product 14 from above is larger than the amount of light applied to the agricultural product 14 from the side, or conversely, the amount of light applied to the agricultural product 14 from the side is applied to the agricultural product 14 from above.
  • the amount of light is larger than the amount of light to be generated, an illuminance difference is generated between the central portion and the outer portion of the agricultural product 14, so that the image of the agricultural product 14 is not always clear.
  • the present invention has been made in view of such problems in the conventional inspection apparatus 10, and when the agricultural product 14 is imaged by irradiating light from above and from the side of the agricultural product 14, the agricultural product 14 is irradiated from above.
  • an illuminating device and an illuminating method capable of controlling the amount of light emitted and the amount of light emitted to the agricultural product 14 from the side to obtain a clear image of the agricultural product 14.
  • the present invention provides an external quality inspection device for agricultural products that irradiates each of agricultural products conveyed in one direction and inspects the external quality of the agricultural products based on reflected light from the agricultural products.
  • the illumination device for irradiating light to the agricultural product used in the above an upper illumination unit for irradiating the agricultural product with light from above the agricultural product, and at least 4 for irradiating the agricultural product with light from the side of the agricultural product
  • Each of the side lighting units, and a control device that controls the amount of light emitted from the upper lighting unit and the amount of light emitted from the side lighting unit.
  • the illuminance at the first point that is most affected by the light emitted from the lighting unit is most affected by the light emitted from the upper lighting unit.
  • control device controls the irradiation time of the side illumination unit so that the illuminance at the first point is equal to the illuminance at the second point.
  • the control device controls the total amount of light emitted from the side lighting unit by controlling the number of side lighting units to be operated among the side lighting units. It is preferable to do.
  • At least one of the upper lighting unit and the side lighting unit includes a circular light receiving device that receives light reflected from the agricultural product, and a ring-shaped lighting device.
  • the lighting fixture is arranged around the light receiving device and concentrically with the light receiving device.
  • the outer diameter of the light receiving device and the inner diameter of the lighting fixture can be set equal.
  • control device may control the side lighting unit such that an irradiation time of the side lighting unit is in a range of 3.6 to 6.1 milliseconds. preferable.
  • the present invention further relates to an illumination method for irradiating light to each of the agricultural products conveyed in one direction and irradiating the agricultural products with light in a method of inspecting the external quality of the agricultural products based on reflected light from the agricultural products.
  • the illuminance at the first point where the produce is most strongly affected by light irradiated from the side is the illuminance at the second point where the produce is most strongly affected by light irradiated from above.
  • a lighting method in which the time for irradiating light from the side of the agricultural product to the agricultural product is controlled so as to fall within a range of 10%.
  • the agricultural product in the second step, is irradiated with light from the side of the agricultural product so that the illuminance at the first point is equal to the illuminance at the second point. It is preferable that the time to perform is controlled.
  • the time during which the agricultural product is irradiated with light from the side of the agricultural product is in the range of 3.6 to 6.1 milliseconds.
  • the present invention further includes a transport means for continuously transporting the agricultural product to be inspected, a detection device for detecting the agricultural product each time the agricultural product passes, and generating a detection signal, and the agricultural product upward and laterally.
  • An external quality inspection device for agricultural products comprising: an imaging unit that captures an image; a lighting unit as described above; and a control unit that operates the imaging unit in response to the detection signal.
  • At least one of the upper illumination unit and the side illumination unit includes a circular light receiving device that receives light reflected from the agricultural product, and a ring-shaped lighting fixture. It is preferable that the lighting fixture is arranged around the light receiving device and concentrically with the light receiving device.
  • the outer diameter of the light receiving device and the inner diameter of the lighting fixture are set equal.
  • control device may control the side illumination unit such that an irradiation time of the side illumination unit is in a range of 3.6 to 6.1 milliseconds. preferable.
  • the present invention further provides an illumination method for irradiating light to each agricultural product conveyed in one direction and irradiating the agricultural product with light in a method of inspecting external quality of the agricultural product based on reflected light from the agricultural product.
  • a program is provided in which the time for irradiating light to the agricultural product from the side of the agricultural product is controlled so as to fall within a range of ⁇ 10% of the illuminance at the second point.
  • the agricultural product in the second processing, is irradiated with light from the side of the agricultural product so that the illuminance at the first point is equal to the illuminance at the second point. It is preferred that the time be controlled.
  • the time during which the agricultural product is irradiated with light from the side of the agricultural product is in the range of 3.6 to 6.1 milliseconds.
  • the control device is configured such that the illuminance at the first point at which the produce is most strongly affected by the light emitted from the side illumination unit is affected by the light from which the produce is emitted from the upper illumination unit.
  • the irradiation time of the side illumination unit is controlled so as to fall within a range of ⁇ 10% of the illuminance at the second point that receives the strongest. That is, the control device controls the operation of the side lighting unit so that the light irradiation time by the side lighting unit becomes the optimum irradiation time.
  • FIG. 1 is a schematic view of an illumination device 100 according to the first embodiment of the present invention.
  • the agricultural products 14 are continuously conveyed on the belt conveyor 12 in one direction.
  • the lighting device 100 includes an upper illumination unit 110 that irradiates the agricultural product 14 with light from above the agricultural product 14, and four lateral illumination units 121 that irradiate the agricultural product 14 with light from the side of the agricultural product 14, 122, 123, 124, and a control device 130 that controls the amount of light emitted from the upper illumination unit 110 to the produce 14 and the amount of light emitted from the side illumination units 121, 122, 123, 124 to the produce 14.
  • an upper illumination unit 110 that irradiates the agricultural product 14 with light from above the agricultural product 14, and four lateral illumination units 121 that irradiate the agricultural product 14 with light from the side of the agricultural product 14, 122, 123, 124, and a control device 130 that controls the amount of light emitted from the upper illumination unit 110 to the produce 14 and the amount of light emitted from the side illumination units 121, 122, 123, 124 to the produce 14.
  • the lighting device 100 forms part of an inspection device 10A that inspects the external quality of the agricultural product 14, and the inspection device 10A continuously supplies agricultural products (for example, grapefruits and tangerines) 14 that are inspected.
  • the conveyor 12 that automatically conveys, the photoelectric sensor 16 that detects the agricultural product 14 each time the agricultural product 14 passes, emits a detection signal, the five CCD cameras 18 that image the agricultural product 14 from five directions, and this embodiment
  • the control device 22 that operates the electronic shutter of each CCD camera 18 in accordance with the detection signal from the photoelectric sensor 16.
  • One of the five CCD cameras 18 is arranged above the agricultural product 14 so as to image the agricultural product 14 being conveyed from above, and the other four are side by side the agricultural product 14 being conveyed.
  • the agricultural products 14 are arranged in a horizontal plane with a 90-degree interval between them on the side.
  • the four CCD cameras 18 are arranged so as to be positioned in a horizontal plane that is approximately half the height of the agricultural product 14.
  • the upper lighting unit 110 and the four side lighting units 121, 122, 123, 124 are arranged adjacent to each of the five CCD cameras 18, and produce the agricultural products 14 passing on the conveyor 12 from above and from the sides, respectively. Irradiate light.
  • the inspection apparatus 10A operates in the same manner as the inspection apparatus 10 shown in FIG. 20 except that the amount of light applied to the agricultural product 14 by the lighting apparatus 100 according to this embodiment is controlled by the control apparatus 130.
  • the control device 130 has the same operation start time of the upper illumination unit 110 and the operation start times of the four side illumination units 121, 122, 123, and 124. Furthermore, the illuminance at the first point at which the agricultural product 14 is most strongly affected by the light irradiated from the side lighting units 121, 122, 123, 124 is The operation end times of the side illumination units 121, 122, 123, and 124 are controlled so as to fall within a range of ⁇ 10% of the illuminance at the second point most strongly affected by the irradiated light.
  • control device 130 always operates the upper illumination unit 110 and controls the irradiation time (operation time) of the side illumination units 121, 122, 123, and 124 to be shorter than the irradiation time of the upper illumination unit 110. I do.
  • FIG. 2 is a block diagram of the control device 130.
  • the control device 130 includes a central processing unit (CPU) 131, a first memory 132, a second memory 133, an input interface 134 for inputting various commands and data to the central processing unit 131, and a central processing unit. And an output interface 135 that outputs a result of the processing executed by 131, and a bus 136 that connects the central processing unit 131 to the first memory 132, the second memory 133, the input interface 134, and the output interface 135.
  • CPU central processing unit
  • Each of the first memory 132 and the second memory 133 includes a read only memory (ROM), a random access memory (RAM), a semiconductor storage device such as an IC memory card, a storage medium such as a flexible disk, and a hard disk Or an optical magnetic disk or the like.
  • ROM read only memory
  • RAM random access memory
  • semiconductor storage device such as an IC memory card
  • storage medium such as a flexible disk, and a hard disk Or an optical magnetic disk or the like.
  • the first memory 132 is composed of ROM
  • the second memory 133 is composed of RAM.
  • the first memory 132 stores various control programs to be executed by the central processing unit 131 and other fixed data.
  • the second memory 133 stores various data and parameters and provides an operation area for the central processing unit 131, that is, data temporarily required for the central processing unit 131 to execute the program. Is stored.
  • the central processing unit 131 reads the program from the first memory 132 and executes the program. That is, the central processing unit 131 operates according to a program stored in the first memory 132.
  • the present inventor conducted the following experiment in order to determine the optimal light amount control of the upper illumination unit 110 and the side illumination units 121, 122, 123, and 124.
  • FIG. 3 is an image of the agricultural product 14 taken from above.
  • the point at which the agricultural product 14 is most strongly affected by the light emitted from the side lighting units 121, 122, 123, and 124 is point A, and the light from which the agricultural product 14 is irradiated from the upper lighting unit 110.
  • a point located at half the height from the bottom with respect to the total height of the agricultural product 14 is selected as the point A, and the apex of the agricultural product 14 is selected as the point B.
  • the irradiation time of the side illumination units 121, 122, 123, 124 is set to 0 milliseconds (msec). ) To 15 milliseconds (msec), and the illuminance at points A and B in each millisecond was measured.
  • This measurement was performed by changing the amount of light emitted from the side illumination units 121, 122, 123, and 124 with respect to the amount of light emitted from the upper illumination unit 110 (Experiment 1-7). .
  • FIG. 4 shows the operation of the side illumination units 121, 122, 123, 124 when the light amount from the upper illumination unit 110 is set to 100 and each light amount from the side illumination units 121, 122, 123, 124 is set to 40. 16 images obtained by imaging the agricultural product 14 from above in each millisecond of 0-15 milliseconds as time.
  • the illuminance at points A and B in each millisecond of 0-15 milliseconds is as shown in Table 1.
  • FIG. 5 is a graph of the numerical values shown in Table 1.
  • the illuminance at point A and the illuminance at point B are equal when the irradiation time is 5.57 milliseconds.
  • control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 5.57 milliseconds.
  • the control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 5.57 milliseconds.
  • the illuminance at the point A falls within the range of ⁇ 10% of the illuminance at the point B when the light irradiation time by the side illumination units 121, 122, 123, 124 is in the range of 3.5 to 8.6 milliseconds. is there.
  • the upper side illumination units 121, 122, 123, and 124 are set.
  • the light irradiation time in the range of 3.5 to 8.6 milliseconds, especially equal to 5.57 milliseconds, the central part of the produce 14 (around the point B) and the outline (of the point A) It is possible to obtain an image in which the surrounding area is captured sufficiently clearly.
  • FIG. 6 shows the operation of the side illumination units 121, 122, 123, 124 when the light amount from the upper illumination unit 110 is set to 100 and each light amount from the side illumination units 121, 122, 123, 124 is set to 50.
  • Table 3 shows the illuminance at point A and point B in each millisecond of 0-15 milliseconds.
  • FIG. 7 is a graph of the numerical values shown in Table 3.
  • the illuminance at point A and the illuminance at point B are equal when the irradiation time is 5.59 milliseconds.
  • control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 5.59 milliseconds.
  • the control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 5.59 milliseconds.
  • the illuminance at the point A is within ⁇ 10% of the illuminance at the point B because the light irradiation time by the side illumination units 121, 122, 123, 124 is 3.6 to 7.9 milliseconds. It is a range.
  • the side illumination units 121, 122, 123, and 124 are set.
  • the irradiation time of light in the range of 3.6 to 7.9 milliseconds, especially equal to 5.59 milliseconds, the central part of the produce 14 (around point B) and the outline (of point A) It is possible to obtain an image in which the surrounding area is captured sufficiently clearly.
  • FIG. 8 shows the operation of the side illumination units 121, 122, 123, 124 when the light amount from the upper illumination unit 110 is set to 100 and each light amount from the side illumination units 121, 122, 123, 124 is set to 60. 16 images obtained by imaging the agricultural product 14 from above in each millisecond of 0-15 milliseconds as time.
  • the illuminance at points A and B in each millisecond of 0-15 milliseconds is as shown in Table 5.
  • FIG. 9 is a graph of the numerical values shown in Table 5.
  • control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 5.20 milliseconds.
  • the control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 5.20 milliseconds.
  • the illuminance at point A falls within the range of ⁇ 10% of the illuminance at point B because the light irradiation time by the side illumination units 121, 122, 123, 124 is 3.2 to 7.3 milliseconds. It is a range.
  • the side illumination units 121, 122, 123, and 124 are set.
  • the irradiation time of light in the range of 3.2 to 7.3 milliseconds, especially equal to 5.20 milliseconds, the central part of the agricultural product 14 (around point B) and the outline (of point A) It is possible to obtain an image in which the surrounding area is captured sufficiently clearly.
  • FIG. 10 shows the operation of the side illumination units 121, 122, 123, 124 when the light amount from the upper illumination unit 110 is set to 100 and each light amount from the side illumination units 121, 122, 123, 124 is set to 70.
  • the illuminance at points A and B in each millisecond of 0-15 milliseconds is as shown in Table 7.
  • FIG. 11 is a graph of the numerical values shown in Table 7.
  • the illuminance at point A and the illuminance at point B are equal when the irradiation time is 4.65 milliseconds.
  • control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 4.65 milliseconds.
  • the control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 4.65 milliseconds.
  • the illuminance at the point A is within ⁇ 10% of the illuminance at the point B because the light irradiation time by the side illumination units 121, 122, 123, 124 is 2.8 to 6.4 milliseconds. It is a range.
  • the side illumination units 121, 122, 123, and 124 are set.
  • the light irradiation time in the range of 2.8 to 6.4 milliseconds, especially equal to 4.65 milliseconds, the central part of the produce 14 (around the point B) and the outline (of the point A) It is possible to obtain an image in which the surrounding area is captured sufficiently clearly.
  • FIG. 12 shows the operation of the side illumination units 121, 122, 123, 124 when the light amount from the upper illumination unit 110 is set to 100 and each light amount from the side illumination units 121, 122, 123, 124 is set to 80.
  • the illuminance at points A and B in each millisecond of 0-15 milliseconds is as shown in Table 9.
  • FIG. 13 is a graph of the numerical values shown in Table 9.
  • the illuminance at point A and the illuminance at point B are equal when the irradiation time is 4.56 milliseconds.
  • control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 4.56 milliseconds.
  • the control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 4.56 milliseconds.
  • the illuminance at the point A is within ⁇ 10% of the illuminance at the point B because the light irradiation time by the side illumination units 121, 122, 123, 124 is 3.1 to 6.1 milliseconds. It is a range.
  • the side illumination units 121, 122, 123, and 124 are set.
  • the irradiation time of light in the range of 3.1 to 6.1 milliseconds, especially equal to 4.56 milliseconds, the central part of the produce 14 (around the point B) and the outline (of the point A) It is possible to obtain an image in which the surrounding area is captured sufficiently clearly.
  • FIG. 14 shows the operation of the side illumination units 121, 122, 123, 124 when the light amount from the upper illumination unit 110 is set to 100 and each light amount from the side illumination units 121, 122, 123, 124 is set to 90.
  • Table 10 shows the illuminance at points A and B for each millisecond of 0-15 milliseconds.
  • FIG. 15 is a graph of the numerical values shown in Table 11.
  • the illuminance at point A and the illuminance at point B are equal when the irradiation time is 4.32 milliseconds.
  • control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 4.32 milliseconds.
  • the control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 4.32 milliseconds.
  • the illuminance at the point A falls within the range of ⁇ 10% of the illuminance at the point B because the light irradiation time by the side illumination units 121, 122, 123, 124 is 2.7 to 6.2 milliseconds. It is a range.
  • the side illumination units 121, 122, 123, and 124 are set.
  • the light irradiation time in the range of 2.7 to 6.2 milliseconds, especially equal to 4.32 milliseconds, the central part of the produce 14 (around the point B) and the outline (of the point A) It is possible to obtain an image in which the surrounding area is captured sufficiently clearly.
  • FIG. 16 shows the operation of the side illumination units 121, 122, 123, 124 when the light amount from the upper illumination unit 110 is set to 100 and each light amount from the side illumination units 121, 122, 123, 124 is set to 100. 16 images obtained by imaging the agricultural product 14 from above in each millisecond of 0-15 milliseconds as time.
  • the illuminance at points A and B in each millisecond of 0-15 milliseconds is as shown in Table 13.
  • FIG. 17 is a graph of the numerical values shown in Table 13.
  • the illuminance at point A and the illuminance at point B are equal when the irradiation time is 4.56 milliseconds.
  • control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 4.56 milliseconds.
  • the control device 130 controls the operation of the side lighting units 121, 122, 123, and 124 so that the light irradiation time by the side lighting units 121, 122, 123, and 124 becomes 4.56 milliseconds.
  • the illuminance at point A falls within the range of ⁇ 10% of the illuminance at point B because the light irradiation time by the side illumination units 121, 122, 123, 124 is 2.8 to 6.2 milliseconds. It is a range.
  • the side illumination units 121, 122, 123, and 124 are set.
  • the irradiation time of light in the range of 2.8 to 6.2 milliseconds, in particular equal to 4.56 milliseconds, the central part of the produce 14 (around the point B) and the outline (of the point A) It is possible to obtain an image in which the surrounding area is captured sufficiently clearly.
  • Table 15 shows the lateral direction when the light amount from the upper illumination unit 110 is set to 100 and the light amounts from the side illumination units 121, 122, 123, and 124 are respectively set to 40, 50, 60, 70, 80, 90, and 100. It is a table
  • surface which shows the optimal irradiation time of the illumination units 121, 122, 123, and 124, and the irradiation time within the range of +/- 10%.
  • the range common to 10% of each optimum irradiation time is 3.6-6.1 milliseconds. Accordingly, when the light quantity from the upper illumination unit 110 is set to 100 and the respective light quantities from the side illumination units 121, 122, 123, 124 are set within the range of 40-100, the side illumination units 121, 122, 123 are set. Regardless of the light intensity setting value of 124, if the light irradiation time by the side lighting units 121, 122, 123, 124 is set in the range of 3.6 to 6.1 milliseconds, It is possible to obtain an image in which the periphery of the point B) and the outline (the periphery of the point A) are captured sufficiently clearly.
  • the illuminating device 100 which concerns on this embodiment is not limited to said structure, A various change is possible.
  • the illuminating device 100 includes a control device 130 that controls the light amount of the upper illumination unit 110 and the side illumination units 121, 122, 123, and 124, and the inspection device 10A is an electronic device for each CCD camera 18.
  • the control device 22 that controls the operation of the shutter is provided, for example, the control device 130 can also be configured to control the operation of the electronic shutter of each CCD camera 18. In this case, the control device 22 can be configured. Is no longer necessary.
  • the lighting device 100 is configured to include four side lighting units 121, 122, 123, and 124, but the number of side lighting units is not limited to four. As the number of side illumination units, any number of 4 or more can be selected. However, the preferred number of side illumination units is four. In addition, each of the side illumination units is preferably arranged at an equal circumferential angle with the upper illumination unit 110 as the center.
  • FIG. 18 is a schematic view of an illumination device 200 according to the second embodiment of the present invention.
  • each of the four side illumination units 121, 122, 123, and 124 is spaced apart from each other by 90 degrees so as to image the agricultural product 14 from the CCD camera.
  • 18 is disposed in a horizontal plane adjacent to the surface 18.
  • the side illumination units 121, 122, 123, 124 are adjacent to the CCD camera 18, the axis line through which the light emitted by the side illumination units 121, 122, 123, 124 passes and the CCD camera 18 receive light. It cannot be parallel to the axis through which the transmitted light passes, and is in a positional relationship slightly inclined with respect to each other. For this reason, the light emitted from the side lighting units 121, 122, 123, and 124 and reflected by the agricultural product 14 is received by the CCD camera 18 with an inclination angle. That is, the CCD camera 18 cannot pick up the agricultural product 14 from the front side, and it is inevitable to pick up the agricultural product 14 from a slight angle.
  • the lighting device 200 solves such a problem and enables the CCD camera 18 to image the agricultural product 14 from the front side.
  • the lighting device 200 includes an upper illumination unit 210 that irradiates the agricultural product 14 with light from above the agricultural product 14, and four units that irradiate the agricultural product 14 with light from the side of the agricultural product 14.
  • the side illumination units 221, 222, 223, 224, and the amount of light emitted from the upper illumination unit 210 to the produce 14 and the amount of light emitted from the side illumination units 221, 222, 223, 224 to the produce 14 are controlled.
  • the control device 130 includes four reflecting mirrors 231, 232, 233, and 234.
  • the illumination device 200 according to the present embodiment is different in that the structures of the upper illumination unit 210 and the side illumination units 221, 222, 223, and 224 are different, and additionally includes reflectors 231, 232, 233 and 234 Except for this, it has the same configuration as that of the illumination device 100 according to the first embodiment.
  • the lighting device 200 according to this embodiment forms part of an inspection device 10A that inspects the external quality of the agricultural product 14.
  • the upper illumination unit 210 in the illumination device 200 includes a lens 211 as a light receiving device and an illumination fixture 212.
  • the lens 211 has a circular cross section and is optically connected to the CCD camera 18.
  • the lighting fixture 212 has a ring shape.
  • the inner diameter of the ring-shaped lighting fixture 212 is equal to the outer diameter of the lens 211, and the lighting fixture 212 is disposed around the lens 211 so as to be concentric with the lens 211.
  • the lighting fixture 212 can be composed of, for example, an LED strobe.
  • Each of the side illumination units 221, 222, 223, 224 has the same configuration as the upper illumination unit 210.
  • the side illumination units 221, 222, 223, 224 are arranged at the same height as the upper illumination unit 210, and the side illumination units 221, 222, 223 are arranged.
  • 224 is configured to irradiate the agricultural product 14 with light through the reflecting mirrors 231, 232, 233, and 234 arranged corresponding to each of the 224.
  • light emitted from the lighting fixtures 212 of the upper lighting unit 210 and the side lighting units 221, 222, 223, and 224 is directly or the reflecting mirrors 231, 232, and 233.
  • the agricultural product 14 is irradiated via 234.
  • the light emitted from the upper illumination unit 210 and reflected by the agricultural product 14 is directly received by the lens 211 of the upper illumination unit 210 and sent to the CCD camera 18. Further, the light emitted from the side lighting units 221, 222, 223, and 224 and reflected by the agricultural product 14 is reflected on the lenses of the side lighting units 221, 222, 223, and 224 via the reflecting mirrors 231, 232, 233, and 234. The light is received by 211 and sent to each CCD camera 18.
  • the light emitted from each lighting fixture 212 of the upper illuminating unit 210 and the side illuminating units 221, 222, 223, 224 passes by until it reaches the agricultural product 14. Since the optical path to be reflected and the optical path where the light reaching the agricultural product 14 is reflected and returned to the respective lenses 211 coincide with each other or become parallel, the upper illumination unit 210 and the side illumination units 221, 222, 223, 224 are integrated.
  • Each of the CCD cameras 18 arranged on the front side can take an image of the produce 14 from the front, that is, without an inclination angle.
  • the illuminating device 200 which concerns on this embodiment is not limited to said structure, A various change is possible.
  • the inner diameter of the lighting fixture 212 is set equal to the outer diameter of the lens 211, but as long as the lighting fixture 212 is arranged so as to be concentric with the lens 211. In this case, it is possible to set the inner diameter of the lighting fixture 212 to be larger than the outer diameter of the lens 211.
  • FIG. 19 is a timing chart showing an example of operation control of the side illumination units 221, 222, 223, and 224.
  • the upper lighting unit 210 is always operated, whereas one of the four side lighting units 221, 222, 223, and 224 is not operated, and the remaining three are operated.
  • the side lighting unit 224 is not operated, and only the side lighting units 221, 222, and 223 are operated.
  • the side lighting unit 223 is not operated, and only the side lighting units 221, 222, and 224 are operated.
  • the side lighting unit 222 is not operated, and only the side lighting units 221, 223, and 224 are operated.
  • the side lighting unit 221 is not operated, and only the side lighting units 222, 223, and 224 are operated. By repeating such a cycle, when the agricultural product 14 is imaged, any three of the four side lighting units 221, 222, 223, and 224 are operated.
  • Illumination device 110 according to the first embodiment of the present invention Upper illumination units 121, 122, 123, 124 Side illumination unit 130 Control device 131 Central processing unit 132 First memory 133 Second memory 134 Input interface 135 Output Interface 136 Bus 10A Agricultural product external quality inspection device 12 Conveyor 14 Agricultural product 16 Photoelectric sensor 18 CCD camera 22 Control device 200 Lighting device 210 according to the second embodiment of the present invention 211 Lens 212 Lighting fixtures 221, 222, 223 224 Side illumination unit 231, 232, 233, 234 Reflector

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  • Chemical & Material Sciences (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Analytical Chemistry (AREA)
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Abstract

L'invention porte sur un dispositif d'éclairage (100), lequel dispositif est utilisé dans un appareil d'inspection de qualité externe pour produits agricoles, l'appareil émettant de la lumière sur chaque article de produits agricoles (14) transporté dans une direction, et inspectant la qualité externe des produits agricoles sur la base d'une lumière réfléchie à partir des produits agricoles. Ce dispositif d'éclairage (100) comprend une unité d'éclairage supérieure (110) pour émettre une lumière sur les produits agricoles à partir du dessus des produits agricoles (14), quatre unités d'éclairage latérales (121-124) pour émettre une lumière sur les produits agricoles à partir du côté des produits agricoles, et un dispositif de commande pour commander la quantité de lumière émise à partir de l'unité d'éclairage supérieure et des unités d'éclairage latérales. Le dispositif de commande (130) commande le temps d'émission des unités d'éclairage latérales (121-124), de sorte que l'éclairage en un premier point rentre à l'intérieur d'une plage de ±10 % de l'éclairage en un second point. Au premier point, une lumière émise à partir des unités d'éclairage latérales (121-124) a un effet maximal sur les produits agricoles (14). Au second point, une lumière émise à partir de l'unité d'éclairage supérieure (110) a un effet maximal sur les produits agricoles (14).
PCT/JP2011/051114 2011-01-21 2011-01-21 Dispositif d'éclairage et procédé d'éclairage pour appareil d'inspection de qualité externe pour produits agricoles WO2012098682A1 (fr)

Priority Applications (4)

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KR1020127030720A KR101740087B1 (ko) 2011-01-21 2011-01-21 농산물의 외부 품질 검사 장치용의 조명 장치 및 조명 방법
JP2012553536A JP5610550B2 (ja) 2011-01-21 2011-01-21 農産物の外部品質検査装置用の照明装置及び照明方法
PCT/JP2011/051114 WO2012098682A1 (fr) 2011-01-21 2011-01-21 Dispositif d'éclairage et procédé d'éclairage pour appareil d'inspection de qualité externe pour produits agricoles
CN201180035446.2A CN103003687B (zh) 2011-01-21 2011-01-21 农产品的外部品质检查装置用的照明装置和照明方法

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CN103101326A (zh) * 2012-12-10 2013-05-15 海宁伊满阁太阳能科技有限公司 带图像识别系统的农副产品激光打标设备
WO2020075000A1 (fr) * 2018-10-10 2020-04-16 株式会社半導体エネルギー研究所 Dispositif d'inspection et procédé de fonctionnement d'un dispositif d'inspection

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WO2021040409A1 (fr) * 2019-08-27 2021-03-04 삼성전자 주식회사 Procédé d'inspection optique et appareil correspondant

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JP2000111486A (ja) * 1998-10-01 2000-04-21 Nireco Corp 西瓜の外観検査による空洞果判定方法と装置
JP2000293666A (ja) * 1999-04-05 2000-10-20 Kubota Corp 疵検出方法及び疵検出装置並びに記録媒体
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WO2020075000A1 (fr) * 2018-10-10 2020-04-16 株式会社半導体エネルギー研究所 Dispositif d'inspection et procédé de fonctionnement d'un dispositif d'inspection
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CN103003687B (zh) 2015-06-03
JP5610550B2 (ja) 2014-10-22
KR101740087B1 (ko) 2017-05-25
CN103003687A (zh) 2013-03-27
KR20130139747A (ko) 2013-12-23

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