WO2015056501A1 - 色彩選別機用の照明装置 - Google Patents
色彩選別機用の照明装置 Download PDFInfo
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- WO2015056501A1 WO2015056501A1 PCT/JP2014/073778 JP2014073778W WO2015056501A1 WO 2015056501 A1 WO2015056501 A1 WO 2015056501A1 JP 2014073778 W JP2014073778 W JP 2014073778W WO 2015056501 A1 WO2015056501 A1 WO 2015056501A1
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- Prior art keywords
- light source
- color sorter
- illumination
- led
- illuminance
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- 238000005286 illumination Methods 0.000 title claims description 54
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 description 20
- 230000003287 optical effect Effects 0.000 description 19
- 230000002950 deficient Effects 0.000 description 11
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
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Classifications
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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
- G01N21/17—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
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to an improvement of an illuminating device for a color sorter, and in particular, to reduce the number of illuminating means installed in an optical detection unit to achieve miniaturization. In addition, it has a long lifetime and low power, and can maintain a stable brightness.
- a color sorter is known as a device that sorts and removes defective products and foreign matters from the flow of the color (for example, see Patent Document 1).
- This type of color sorter irradiates the object to be sorted with light from the light source, detects the color difference, brightness difference, etc. of the reflected light from the sorted object or the transmitted light to the sorted object, and detects these color differences. Based on the lightness difference, this is based on the principle that an ejector immediately removes defective products or foreign matters mixed in the object to be sorted.
- a line sensor composed of a line CCD capable of simultaneous detection in a straight line is often used, and a light source for such a sensor is a conventional color sorter.
- straight fluorescent lamps many halogen bulbs or LED elements arranged in a line have been used (for example, see Patent Document 2 and FIG. 9).
- a plurality of straight tube fluorescent lamps or columnar LED elements having different wavelengths according to the object to be selected and foreign matters are arranged in the optical detection unit, the side on which the object to be selected such as grains flows down, and the reflection It is configured to illuminate the vicinity of the background such as a plate, and conventionally, it has been necessary to install a plurality of illumination means in the optical detection section (see paragraph 0043 of FIG. 4 and FIG. 4).
- this type of color sorter irradiates the object to be sorted with light from the light source, and detects the color difference, brightness difference, etc. of the reflected light from the sorted object or the transmitted light to the sorted object by means of these sensors. Based on the color difference and brightness difference, the defective product or foreign matter mixed in the object to be sorted is immediately removed by the ejector.
- a line sensor composed of a line CCD capable of simultaneous detection in a straight line is often used, and a light source for such a sensor is a conventional color sorter.
- straight fluorescent lamps, many halogen light bulbs, or LED elements arranged in a line have been used (for example, see Patent Document 3 and FIG. 9).
- an object of the present invention to provide an illumination device for a color sorter that can be reduced in size by reducing the number of illumination means installed in the optical detection unit. It is another object of the present invention to provide a lighting device for a small color sorter that is excellent in long life and low power.
- a lighting device for a color sorter includes a long heat dissipation chassis, an LED board installed on the chassis, and a number of LED elements on the LED board in the longitudinal direction.
- the light source is integrated with at least two light sources, and one of the light sources illuminates the side where the object to be sorted flows down. The other light source illuminates the background side arranged opposite to the camera of the color sorter.
- one light source may be a light source that emits light in a visible wavelength range
- the other light source may be a light source that emits light in a near-infrared wavelength range.
- the shape of the chassis on which the LED board is installed has a triangular roof shape in cross section, and one inclined surface of the triangular roof shape is formed as a light source for illumination on the side where the sorting object flows, and the other inclined surface is formed on the background.
- the light source for illumination may be formed.
- an illuminance sensor may be provided adjacent to the LED element, and a control device that keeps the illuminance of the light source constant by illuminance data from the illuminance sensor may be provided.
- An illumination device for a color sorter has a long heat dissipation chassis, an LED board installed on the chassis, and a number of LED elements arranged in a straight line in the longitudinal direction on the LED board.
- the LED board is provided with an illuminance sensor adjacent to the LED element, and the illuminance data from the illuminance sensor keeps the illuminance of the light source constant.
- Equipment is provided. You may provide the temperature sensor which detects the temperature of the said LED element in the vicinity of the said illumination intensity sensor of the said LED board.
- the light source disposed in the optical detection unit of the color sorter is an integrated light source provided with at least two light sources, and one light source is an object to be sorted.
- the side that flows down is illuminated, and the background side where the other light source is arranged facing the camera is illuminated.
- the light source that illuminates the side on which the selection object flows and the light source that illuminates the background can be used together, and the number of light sources installed in the optical detection unit can be reduced.
- one light source is formed as a light source that emits light in the visible wavelength range
- the other light source is formed as a light source that emits light in the near-infrared wavelength range
- the visible light source and near infrared The light source can also be used as a light source, and the number of light sources installed in the optical detection unit can be reduced.
- the slope of one of the triangular roofs is used as the illumination light source on the side where the material to be sorted flows down, and the other slope faces the camera. This makes it possible to reduce the size and cost of creating a shared light source by using it as a background illumination light source.
- the LED board is provided with a control device that arranges an illuminance sensor adjacent to the LED element, while maintaining a constant illuminance of the light source based on illuminance data from the illuminance sensor. Since the illuminance of the light source is made constant by the data, it has become possible to eliminate problems such as unstable illuminance and excessive output. As a result, it is possible to provide an illuminating device that is excellent in long life and low power.
- the accuracy of illuminance stabilization is improved. That is, when control for increasing illuminance is performed based on data from the illuminance sensor, the temperature of the LED element increases in proportion to the increase in current. At this time, since the temperature sensor operates, it is possible to suppress an increase in current up to the application temperature range of the LED element.
- FIG. 1 is a schematic perspective view of a lighting device according to an embodiment of the present invention when a lighting cover is removed.
- FIG. 2 is a schematic perspective view when the illumination cover of the illumination device is attached.
- FIG. 3 is a schematic cross-sectional view showing the internal structure of the illumination device.
- FIG. 4 is a schematic cross-sectional view when the illumination device is applied to a color sorter.
- FIG. 5 is a block diagram showing the control configuration of the illumination device of the above.
- FIG. 6 is an example of a circuit diagram of the illumination device.
- FIG. 7 is a schematic perspective view of a conventional illumination device for a color sorter.
- FIG. 1 is a schematic perspective view when the illumination cover of the illumination device according to the embodiment of the present invention is removed
- FIG. 2 is a schematic perspective view when the illumination cover of the illumination device is attached
- FIG. It is a schematic cross-sectional view which shows the internal structure of an illuminating device same as the above.
- the lighting device 1 includes a long chassis 2 for heat dissipation, an LED board 3 installed on the chassis, and a large number of LED elements 4 on the LED board 3.
- a light source 5 arranged in a straight line in a direction, an illuminance sensor 6 disposed adjacent to the LED element 4 of the light source 5, a temperature sensor 7 disposed in the vicinity of the illuminance sensor 6, and the chassis 2 LED lamp sockets 8a and 8b for power supply disposed at both ends are provided.
- the material of the long chassis 2 is preferably aluminum.
- FIG. 2 is provided with an illumination unit cover 9 made of white polycarbonate made of translucent material and sensor connectors 10a and 10b for the illuminance sensor 6 and the temperature sensor 7 in addition to the illumination device 1 of FIG. is there.
- FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2, and shows the internal structure of the lighting device 1.
- the chassis 2 includes a first chassis 2a having a U-shaped cross section, and a second chassis 2b having a triangular roof-like cross section mounted on the first chassis 2a.
- light sources 5a and 5b are disposed on one inclined surface 2c having a triangular roof shape and the other inclined surface 2d having a triangular roof shape, respectively.
- the light source 5 is an integrated unit that includes at least two light sources 5a and 5b.
- the light source 5a on one inclined surface 2c is foreground illumination, that is, a material to be sorted such as a grain of a color sorter flows down.
- the light source 5b on the other inclined surface 2d is a background illumination, that is, a light source for illuminating a background plate arranged facing the camera of the color sorter.
- the light source 5a may be background illumination and the light source 5b may be foreground illumination.
- one light source 5a is formed as a light source that irradiates light in the visible light wavelength region such as 450 to 600 nm, and the other light source 5b is light in the near infrared light wavelength region such as 800 to 1300 nm.
- the light source 5 can be used as both a visible light source and a near infrared light source.
- the internal angle ⁇ of the triangular roof shape of the second chassis 2b is set by the arrangement of the optical system of the color sorter, and is, for example, in the range of about 80 ° to 100 °, preferably in the range of 85 ° to 95 °. Preferably, it is in the range of 85 ° to 90 °.
- the shape of the second chassis 2b is not limited to the triangular roof shape, and may be formed in a trapezoidal shape or a semicircular shape, for example, and may be appropriately set according to the shape of the optical detection unit. .
- FIG. 3 will be described.
- a large number of LED elements 4a are arranged in a straight line in the longitudinal direction on the LED substrate 3a for the light source 5a (see FIG. 1), and the illuminance sensor 6a and the temperature are adjacent to the LED elements 4a.
- Sensor 7a is arranged.
- a large number of LED elements 4b are arranged in a straight line in the longitudinal direction on the LED substrate 3b for the light source 5b, and an illuminance sensor 6b and a temperature sensor 7b are disposed adjacent to the LED elements 4b.
- FIG. 4 is a schematic cross-sectional view when the lighting device is applied to a color sorter.
- the color sorter 50 includes a chute 51 as a transfer means arranged at an angle of about 60 degrees from a horizontal position, a storage tank 52 that stores a sorting object such as a grain, A vibration feeder 53 for transporting the object to be sorted from the storage tank 52 to the chute 51, optical detection units 54a and 54b provided on both sides of the fall trajectory of the object to be sorted falling from the lower end of the chute 51, and further below An ejector nozzle 55 provided on the ejector nozzle 55, a non-defective product collecting rod 56 that is on the same inclination line as the chute 51 below the ejector nozzle 55, and that receives the granular material of the falling trajectory without receiving the blast from the ejector nozzle 55, A defective product collecting rod 57 that is arranged in parallel with the non-defective product collecting rod 56 and receives a blast from the ejector
- a plurality of cameras 59a and 59b, illumination devices 1a and 1b, and an opposing background 60a are arranged in the front optical detection unit 54a.
- a single camera 59c, illumination devices 1c and 1d, and opposing backgrounds 60b and 60c are arranged in the rear optical detection unit 54b.
- the window members 61a and 61b which consist of transparent glass are engage
- one light source illuminates the foreground illumination, that is, the window member 61a side through which an object to be sorted such as grains of a color sorter flows down.
- the other light source is a background illumination, that is, a light source for illuminating the background 60a.
- the illumination devices 1c and 1d of the optical detection unit 54b on the rear side are foreground illumination, that is, a window member through which an object to be sorted such as grains of a color sorter flows down.
- a light source for illuminating the 61b side, and the other light source is a background illumination, that is, a light source for illuminating the backgrounds 60b and 60c.
- FIG. 5 is a block diagram showing a control configuration of the lighting device 1.
- the control configuration of the lighting device 1 will be described with reference to FIG. 5.
- the LED substrate 3 on which the plurality of LED elements 4 are arranged is a constant current that is in electrical communication with the LED elements 4 and supplies an LED drive current.
- a drive unit 11, a control device 12 that instructs the constant current drive unit 11 to supply light emission current, and a display device 13 that displays various control contents of the control device 12 are provided.
- An illuminance sensor 6 disposed adjacent to the LED element 4 and a temperature sensor 7 disposed in the vicinity of the illuminance sensor 5 are electrically connected to the control device 12, and the LED element 4 emits light.
- increase / decrease in the supply of the LED drive current can be feedback controlled.
- FIG. 6 is an example of a circuit diagram of the lighting device 1.
- a number of LED elements 4a are connected in series to form a light source 5a that is foreground illumination
- a number of LED elements 4b are connected in series to form a light source 5b that is background illumination.
- Each can be powered.
- the illuminance sensors 6a and 6b detect the illuminance, and the increase / decrease in current supply is controlled so that the illuminance is set in advance.
- the temperature sensors 7a and 7b are operated to control the current supply so that the temperature is set in advance.
- the light source 5 disposed in the optical detection unit 54 is integrated with at least two light sources 5a and 5b, and one light source 5a is an object to be sorted.
- the other light source 5b illuminates the background 60 side that is disposed facing the camera 59.
- one light source 5a is formed as a light source for irradiating light in the visible wavelength range and the other light source 5b is formed as a light source for irradiating light in the near-infrared wavelength region
- a light source for visible light is used.
- a near-infrared light source, and the number of light sources installed in the optical detection unit 54 can be reduced.
- the shape of the chassis 2 on which the LED board 3 is installed is a triangular roof shape in cross section
- one of the slopes 2c of the triangular roof shape is used as the illumination light source 5a on the side where the object to be sorted flows down
- the inclined surface 2d is used as the light source 5b for illumination of the background 60 arranged to face the camera 59, it is possible to reduce the size and cost of creating a shared light source.
- the LED substrate 3 is installed on the long chassis 2 for heat dissipation.
- the heat dissipation effect of the LED substrate is high and failure is unlikely to occur.
- the LED board 3 is provided with an illuminance sensor 6 adjacent to the LED element 4, and a control device 12 that keeps the illuminance of the light source 5 constant by illuminance data from the illuminance sensor 6.
- the illuminance of the light source is made constant by the illuminance data from the illuminance sensor 6, it is possible to eliminate problems such as unstable illuminance and excessive output. As a result, it is possible to provide a lighting device that is excellent in long life, low power, and vibration resistance.
- the LED substrate 3 with a temperature sensor 7 that detects the temperature of the LED element 4 in the vicinity of the illuminance sensor 6, the accuracy of illuminance stabilization is improved. That is, when the control for increasing the illuminance is performed based on the data from the illuminance sensor 6, the temperature of the LED element 4 increases in proportion to the increase in current. At this time, since the temperature sensor 7 operates, it is possible to suppress an increase in current up to the application temperature range of the LED element 4.
- the present invention can be applied to an illumination device for a color sorter.
Abstract
Description
この種の色彩選別機は、光源からの光を被選別物に照射し、被選別物からの反射光或いは被選別物への透過光の色差、明度差等をセンサによって検知し、これらの色差、明度差に基づいて、被選別物内に混入している不良品や異物等をイジェクタによって即座に除去するという原理に基づいている。適用されるセンサとしては、選別収量を上げるために、一直線で同時検知可能なラインCCDからなるラインセンサが使用される場合が多く、このようなセンサに対する光源としては、従来の色彩選別機においては、直管の蛍光灯や、多数のハロゲン電球又はLED素子を列状に並べたものが用いられてきた(例えば、特許文献2参照、図9参照)。
前記LED基板が設置されるシャーシの形状が断面三角屋根形状であり、前記三角屋根形状の一方の斜面を被選別物が流下する側の照明用の光源に形成し、他方の斜面を前記バックグラウンドの照明用の光源に形成してもよい。
前記LED基板には、前記LED素子に隣接して照度センサを配設する一方、該照度センサからの照度データにより前記光源の照度を一定に保持する制御装置を設けてもよい。
前記LED基板の前記照度センサの近傍に前記LED素子の温度を検知する温度センサを設けてもよい。
2 シャーシ
3 LED基板
4 LED素子
5 光源
6 照度センサ
7 温度センサ
8 LEDランプソケット
9 照明部カバー
10 センサ用コネクタ
11 定電流ドライブユニット
12 制御装置
13 表示装置
50 色彩選別機
51 シュート
52 貯留タンク
53 振動フィーダ
54 光学検出部
55 エジェクターノズル
56 良品回収樋
57 不良品回収樋
58 補助不良品回収樋
59 カメラ
60 バックグラウンド
61 窓部材
Claims (6)
- 放熱用の長尺状シャーシと、該シャーシ上に設置したLED基板と、該LED基板上に多数のLED素子を長手方向に一直線状に配列させた光源と、を備えた色彩選別機用の照明装置であって、
前記光源は、少なくとも二つの光源を併設して一体化したものであり、一方の光源が被選別物の流下する側を照明し、他方の光源が前記色彩選別機のカメラに対向して配置されるバックグラウンド側を照明することを特徴とする色彩選別機用の照明装置。 - 請求項1に記載の色彩選別機用の照明装置であって、一方の光源が可視光の波長域の光を照射する光源であり、他方の光源が近赤外光の波長域の光を照射する光源であることを特徴とする色彩選別機用の照明装置。
- 請求項1又は2記載の色彩選別機用の照明装置であって、前記LED基板が設置されるシャーシの形状が断面三角屋根形状であり、前記三角屋根形状の一方の斜面を被選別物が流下する側の照明用の光源に形成し、他方の斜面を前記バックグラウンドの照明用の光源に形成することを特徴とする色彩選別機用の照明装置。
- 請求項1から3のいずれかに記載の色彩選別機用の照明装置であって、前記LED基板には、前記LED素子に隣接して照度センサを配設する一方、該照度センサからの照度データにより前記光源の照度を一定に保持する制御装置を設けていることを特徴とする色彩選別機用の照明装置。
- 放熱用の長尺状シャーシと、該シャーシ上に設置したLED基板と、該LED基板上に多数のLED素子を長手方向に一直線状に配列させた光源と、を備えた色彩選別機用の照明装置であって、前記LED基板には、前記LED素子に隣接して照度センサを配設する一方、該照度センサからの照度データにより前記光源の照度を一定に保持する制御装置を設けたことを特徴とする色彩選別機用の照明装置。
- 請求項4又は5記載の色彩選別機用の照明装置であって、前記LED基板には、前記照度センサの近傍に前記LED素子の温度を検知する温度センサを設けていることを特徴とする色彩選別機用の照明装置。
Priority Applications (5)
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US15/029,341 US9863871B2 (en) | 2013-10-17 | 2014-09-09 | Illumination device for color sorter |
CN201480056790.3A CN105849533A (zh) | 2013-10-17 | 2014-09-09 | 色彩分级机用照明装置 |
KR1020167012135A KR20160071414A (ko) | 2013-10-17 | 2014-09-09 | 색채 선별기용의 조명 장치 |
BR112016008483-7A BR112016008483B1 (pt) | 2013-10-17 | 2014-09-09 | dispositivo de iluminação para classificador de cor |
GB1606998.1A GB2534753B (en) | 2013-10-17 | 2014-09-09 | Illumination device for color sorter |
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JP2013216367A JP6241190B2 (ja) | 2013-10-17 | 2013-10-17 | 色彩選別機用の照明装置 |
JP2013-216368 | 2013-10-17 | ||
JP2013216368A JP6241191B2 (ja) | 2013-10-17 | 2013-10-17 | 色彩選別機用の照明装置 |
JP2013-216367 | 2013-10-17 |
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KR (1) | KR20160071414A (ja) |
CN (1) | CN105849533A (ja) |
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EP3263233A1 (en) * | 2016-06-28 | 2018-01-03 | Buhler Sortex Ltd. | Illumination devices |
CN107774586A (zh) * | 2017-11-28 | 2018-03-09 | 安徽文尧智能光电科技有限公司 | 茶叶色选机下料调节挡板 |
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CN107262394A (zh) * | 2017-08-02 | 2017-10-20 | 北京加隆工程机械有限公司 | 一种建筑垃圾色选设备 |
CN111868275A (zh) | 2018-03-16 | 2020-10-30 | 捷客斯金属株式会社 | 电子电气设备部件废料的处理方法 |
DE102019130883A1 (de) * | 2019-11-15 | 2021-05-20 | Swat Automation Gmbh | Verfahren und Vorrichtung zur Erkennung von Fremdkörpern |
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Also Published As
Publication number | Publication date |
---|---|
US9863871B2 (en) | 2018-01-09 |
CN105849533A (zh) | 2016-08-10 |
BR112016008483B1 (pt) | 2021-03-16 |
GB2534753B (en) | 2020-06-17 |
US20160274021A1 (en) | 2016-09-22 |
BR112016008483A2 (ja) | 2020-04-28 |
GB2534753A (en) | 2016-08-03 |
KR20160071414A (ko) | 2016-06-21 |
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