TW202012915A - Grain quality distinguishing device - Google Patents

Abstract

An object of the present invention is to provide a grain quality distinguishing device capable of accurately distinguishing the quality of the external appearance of a grain placed on a transparent sample tray by preventing the appearance of light source glare on a bottom section of the sample tray. The grain quality distinguishing device of the present invention irradiates light onto a grain placed on a sample tray with a transparent bottom such that light passes through the grain, and distinguishes the quality of the external appearance of the grain based on the light transmitted through the grain, wherein an illumination mechanism having a light source is disposed beneath the sample tray, and the illumination mechanism irradiates indirect light onto the grain placed on the sample tray. In the present invention, it is preferable that the illumination mechanism has light source blocks disposed at an oblique angle below the sample tray, light sources are disposed inside the light source blocks, and the illumination mechanism reflects the light from the light sources inside the light source blocks, thereby illuminating the grain placed on the sample tray from below at an oblique angle with indirect light.

Description

Grain grade discrimination device

The present invention relates to a grain grade discrimination device for discriminating the appearance grade of grains such as rice, wheat, beans, and corn. In particular, the present invention relates to a grain grade discrimination device that includes an illumination mechanism that prevents the light source from being displayed at the bottom of the sample tray, and distinguishes the appearance grade of the grain placed on the sample tray with good accuracy.

In the past, it is generally known to irradiate light to the grains, make the light penetrate the grains and/or reflect on the grains, and judge the aforesaid based on the penetrating light and/or reflected light from the grains Grain appearance grade (refer to Patent Documents 1 and 2).

Patent Document 1 describes an apparatus including an imaging mechanism, including an upper imaging lighting unit, a lower lighting unit, a tray on which an arbitrary number of grains, which are discrimination objects arranged between them, and an imaging unit of the lighting unit are photographed from above The upper light emitting part irradiates light onto the grains placed on the tray and shoots the reflected light with the upper shooting lighting unit, or irradiates light to the grains from the lower light emitting part of the lower lighting unit and shoots the light with the upper shooting lighting unit Penetrating light to obtain image data formed by the reflected light or penetrating light from the aforementioned grains.

In addition, Patent Document 2 describes a device including: a base member; a rotating member arranged rotatably in the base member and having a light source on one side; and a cover member attached to the base member and The base member forms an outer frame together, and is located above the rotating member, and has an opening for receiving the sample pan on which the grain is placed; and the sample pan on which the plural grains are placed is provided on the cover member The opening part irradiates the transparent bottom surface of the sample tray with obliquely downward light from the light source, and allows the light to penetrate through the plural grains placed on the sample tray from obliquely downward.

According to the device described in Patent Document 1, the image data formed by the reflected light or transmitted light from the grain obtained by the shooting mechanism can be compared with the reference image data for grain inspection The appearance grade of the aforementioned grains.

In addition, according to the device described in the above-mentioned Patent Document 2, it is possible to observe the presence or absence of shadows in the grain from the top of the sample tray by the operator's visual observation, etc., and to detect the carcass and the like.

However, the device described in Patent Document 1 is a device that mounts a tray on a lower light-emitting portion, and there is a problem that the lower light-emitting portion is displayed on the bottom of the tray, and the valley obtained by the shooting mechanism The image data of the grain affects it, so it is impossible to judge the appearance grade of the grain with good accuracy.

On the other hand, the device described in Patent Document 2 arranges the light source on the lower side of the sample tray and irradiates light to the bottom surface of the sample tray from diagonally below, but the light source is not directed to the side of the sample tray In the case of Fang Layuan, there will be the following problems: the aforementioned light source is displayed at the bottom of the aforementioned sample tray, which affects the grain observation by the operator from above the sample tray, and therefore cannot be detected correctly Measure the cracked rice and so on. [Previous Technical Literature] [Patent Literature]

Patent Literature 1: Japanese Patent Laid-Open No. 2015-7606 Patent Document 2: Japanese Patent Laid-Open No. 2014-173884

[Problems to be solved by the invention]

Therefore, the object of the present invention is to provide a grain grade discriminating device, which can judge the appearance grade of the grain placed on the sample disc with good accuracy by avoiding the light source being displayed on the bottom of the transparent sample disc. [Method of solving the problem]

In order to achieve the above object, an embodiment of the present invention is a grain grade discrimination device, Irradiating light to the grains placed on the sample tray with a transparent bottom surface, allowing the light to penetrate the grains, and judging the appearance grade of the grains based on the penetrating light from the grains, characterized by, A lighting mechanism with a light source is arranged below the aforementioned sample tray, The illumination mechanism irradiates the grain placed on the sample tray with indirect light.

An embodiment of the present invention is preferably as follows. The lighting mechanism has a light source block disposed obliquely below the sample tray, and the light source is disposed inside the light source block, The illumination mechanism reflects the light from the light source inside the light source block, and irradiates the grain placed on the sample tray from below obliquely as indirect light.

An embodiment of the present invention is preferably as follows. The light source block includes: a fixing portion that fixes the light source; a light guide portion that is located above the fixing portion and extends toward the center side of the sample tray to direct light from the light source toward the bottom of the sample tray (Direct light) to block and reflect it; and the reflection part, located at the lower part of the fixed part, reflects the direct light from the light source or the reflected light from the light guide part; The illumination mechanism reflects light from the light source on the inner surface of each part of the light source block, and irradiates the grain placed on the sample tray from below obliquely as indirect light.

An embodiment of the present invention is preferably as follows. A black reflection plate serving as a background is arranged below the sample tray, and on the other hand, the lighting mechanism is arranged adjacent to the outside of the black reflection plate, and the inside of the respective parts of the light source block The side is set to white.

An embodiment of the present invention is preferably as follows. The illumination mechanism is provided with a plurality of obliquely below the sample tray, and irradiates light from the light source as indirect light from a plurality of directions to grains placed on the sample tray.

An embodiment of the present invention is preferably as follows. The aforementioned grain grade discrimination device irradiates light to the grains mounted on the sample tray with a transparent bottom surface, causes light to pass through the grains and/or reflects on the grains, and is based on the penetration from the grains Light and/or reflected light to determine the appearance grade of the aforementioned grain, wherein, The upper light source and the upper illumination mechanism are arranged diagonally above the sample tray, The upper lighting mechanism includes: a fixing portion that fixes the upper light source; a lower light-shielding portion, which is located below the upper light source, blocks direct light from the upper light source toward the sample tray and reflects it upward; upper side The light shielding portion is located above the upper light source, and blocks direct light from the upper light source upward and reflected light reflected by the lower light shielding portion to reflect downward; In addition, the upper illumination mechanism reflects light from the upper light source at the light-shielding portions, and irradiates the grains placed on the sample tray from above diagonally as indirect light.

An embodiment of the present invention is preferably as follows. The upper illumination mechanism is provided with a plurality of inner surfaces of a cylindrical body, and irradiates light from the upper light source as indirect light to grains placed on the sample tray from a plurality of directions.

An embodiment of the present invention is preferably as follows. Each of the light-shielding portions is set to black, and on the other hand, the inner surface of the cylinder is set to be white below the upper light-shielding portion and black above the upper light-shielding portion.

An embodiment of the present invention is preferably as follows. Arranged above the upper light-shielding portion and inside the cylindrical body: a black light-shielding plate having a circular opening and having an adjustment to the amount of transmitted light and/or reflected light from the grain Aperture function.

In the grain grade discrimination device of an embodiment of the present invention, since the illumination mechanism irradiates light from the light source as indirect light to the grains placed on the sample tray from below, the light source can be prevented from being displayed on the sample tray. bottom. Therefore, according to an embodiment of the present invention, the grain grade discrimination device can discriminate the appearance grade of the grain placed on the sample tray with good accuracy based on the penetrating light from the grain.

In addition, in the grain grade discrimination device of an embodiment of the present invention, since the illumination mechanism irradiates light from the light source as indirect light from below to the grain placed on the sample tray, there is no need to prevent the light source from appearing in The bottom part of the sample tray is provided with the illumination mechanism pulled away from the center of the sample tray to the side. Therefore, according to the grain grade discrimination device of one embodiment of the present invention, it is possible to prevent the device from being enlarged in size in order to prevent the light source from being displayed on the bottom of the sample tray.

According to an embodiment of the present invention, the grain grade discrimination device is provided that the lighting mechanism has a light source block disposed obliquely below the sample tray, and the light source is disposed inside the light source block, and the lighting mechanism The light from the light source is reflected inside the light source block, and is irradiated obliquely from below to the grains placed on the sample tray, then the illumination mechanism can simply Light is defined as indirect light.

In addition, the grain grade discrimination device of one embodiment of the present invention is suitable for detecting carcass cracks and the like as long as the light from the light source is irradiated from diagonally below to the grains placed on the sample tray.

According to an embodiment of the present invention, the grain grade determining device is provided that the light source block is provided with: a fixing portion that fixes the light source; and a light guide portion that is located above the fixing portion and extends toward the center of the sample tray , And the direct light (direct light) from the light source toward the bottom of the sample tray is blocked and reflected; and the reflecting part is located at the lower part of the fixing part, so that the direct light from the light source or the light guide The reflected light of the light part is reflected; and the illumination mechanism reflects the light from the light source on the inner side surfaces of the parts of the light source block, and irradiates the grains placed on the sample tray from below obliquely as indirect light. The range of the light source displayed on the bottom of the sample tray can be reduced by the light guide, so the device can be miniaturized. In addition, in the grain grade discrimination device according to an embodiment of the present invention, since the illumination mechanism can guide most of the light from the light source to the reflection portion of the light source block, effective use of light can be achieved.

The grain grade discrimination device of one embodiment of the present invention is provided as long as the black reflecting plate serving as the background is arranged below the sample tray, and on the other hand, the illumination mechanism is arranged adjacent to the black reflection Outside the board, and the inner side surfaces of the parts of the light source block are set to white, the white inner side surfaces of the parts of the light source block can effectively reflect the light of the light source for effective application. In addition, most of the light incident on the black reflection plate as the background from the illumination mechanism becomes indirect light. Therefore, the reflection from the black reflection plate can prevent the light source from being displayed on the bottom of the sample tray.

According to an embodiment of the present invention, as long as the grain level discrimination device is set, the illumination mechanism is provided at a plurality of obliquely below the sample tray, and the light from the light source is irradiated to the sample tray from the plural directions as indirect light The placed grains can detect carcass splits with good accuracy regardless of the orientation of the grains.

The grain grade discrimination device according to an embodiment of the present invention may be set as an upper illumination mechanism to reflect light from an upper light source on a lower light-shielding portion and an upper light-shielding portion, and irradiate the sample tray from diagonally upward as indirect light. The grains can prevent the upper light source from being displayed on the sample tray. Therefore, the grain grade discrimination device according to an embodiment of the present invention can discriminate the appearance grade of the grain placed on the sample tray with good accuracy based on the transmitted light and/or reflected light from the grain.

In addition, the grain grade discrimination device of an embodiment of the present invention may be set as an upper illumination mechanism that reflects light from the upper light source in each light-shielding portion, and irradiates the valley mounted on the sample tray diagonally as indirect light. In order to prevent the upper light source from being displayed on the bottom of the sample tray, it is not necessary to dispose the upper lighting mechanism from the center of the sample tray to the side. Therefore, according to the grain grade discrimination device of one embodiment of the present invention, it is possible to prevent the device from being enlarged in size in order to prevent the light source from being displayed on the bottom of the sample tray.

According to an embodiment of the present invention, as long as the upper-level illumination mechanism is provided on the inner surface of the cylinder, the upper-level illumination mechanism is determined to irradiate light from the upper-level light source to the sample tray from the multiple directions as indirect light. The grains placed can be judged with good accuracy regardless of the orientation of the grains.

According to an embodiment of the present invention, the grain grade discrimination device is provided that each of the light-shielding portions is set to black, and on the other hand, the inner surface of the cylinder body is set to be white below the upper light-shielding portion 1. The upper part of the upper light-shielding portion is set to black, and the light from the upper light sources can be effectively applied by the white inner surface of the cylindrical body lower than the upper light-shielding portion. In addition, the present invention acquires images of grains placed on the sample tray from above the cylinder, but the black inner surface above the upper light-shielding portion avoids the The light circulates above the barrel, so a clear image of the grain can be obtained. The grain grade discrimination device of an embodiment of the present invention is provided above the upper light-shielding portion and inside the barrel: a black light-shielding plate, having a circular opening, and having The aperture function that adjusts the amount of transmitted light and/or reflected light; when the image of the grain placed on the sample tray is obtained from above the barrel, the vividness of the grain can be obtained image. In addition, the size of the opening of the black shading plate can be changed to adjust the range of the image of the grains placed on the sample tray, thus effectively preventing the light source or the upper light source from being displayed on the bottom of the sample tray . [Effect of Invention]

By the present invention, a grain grade discrimination device is provided, which can distinguish the appearance grade of the grain placed on the sample tray with good accuracy by avoiding the light source being displayed on the bottom of the transparent sample tray.

[Preferable embodiment of the invention]

The embodiment of the present invention will be described based on the drawings. FIG. 1 shows a schematic explanatory diagram of a grain grade discrimination device in an embodiment of the present invention. The grain grade determination device 1 shown in FIG. 1 includes a lower lighting storage unit 2 and an upper lighting cylinder 3. The lower lighting storage portion 2 has a rectangular space in plan view, and houses the lower lighting mechanism 20 along the side surface. Here, an example in which two sets of lower lighting mechanisms 20 are stored is shown. A circular opening 24 is provided in the upper center of the lower lighting storage portion 2, and a circular transparent basin 4 formed of a transparent material is placed on the opening 24. In addition, a black reflection plate 23 serving as a background is arranged at the bottom of the storage unit 2 for lower lighting and below the transparent basin 4. The lower illumination mechanism 20 is disposed obliquely below the transparent bowl (sample tray with a transparent bottom surface) 4, and irradiates light to the grains placed on the transparent bowl 4 from obliquely below. As shown in FIG. 8 described later, the lower lighting mechanism 20 may be disposed directly under the transparent basin 4. In this case, the lower lighting mechanism 20 is configured to be a member having the same color as the black reflective plate 23, and functions as a background.

The cylindrical body 3 for upper lighting has a cylindrical shape, and is disposed on the upper portion of the storage portion 2 for lower lighting so as to be concentric with the opening 24. An upper lighting mechanism 30 is provided on the inner surface of the cylindrical body 3 for upper lighting. Here, four sets (one set of illustrations are omitted) of the upper lighting mechanism 30 are provided in the circumferential direction of the display. In the upper lighting cylinder 3, the upper part is closed by a lid 34, and the transparency is acquired by an image acquisition mechanism (sensor) 5 such as a camera through an opening 35 provided in the center of the lid 34 Image data of the grains placed on basin 4. The upper lighting mechanism 30 is disposed obliquely above the transparent bowl 4 and irradiates light to the grains placed on the transparent bowl 4 from obliquely above.

FIG. 2 is an explanatory diagram of a lower lighting mechanism, and shows a light source block. Fig. 3 shows a cross-sectional view taken along line A-A of Fig. 2. The aforementioned lower lighting mechanism 20 has a lower light source 21 and an elongated light source block 22. The light source block 22 includes: a fixing portion 221, which fixes the lower light source 21; and a light guide portion 222, which is located at the upper front end of the fixing portion 221 and extends toward the center side of the transparent basin 4 to be from the lower light source 21 Direct light (direct light) toward the bottom of the aforementioned transparent basin 4 is blocked and reflected downward. In addition, the light source block 22 includes a reflecting portion 223 located at the lower portion of the fixing portion 221, and the upper surface is inclined downward toward the center side of the transparent basin 4, so that direct light from the lower light source 21 or The reflected light of the light guide 222 is reflected.

The lower illumination mechanism 20 reflects the light from the lower light source 21 at the respective parts of the light source block 22, and radiates the oblique light from the reflective part 223 or through the black reflective plate 23 from below to the transparent basin 4 The grain placed. The lower lighting mechanism 20 can reduce the range of the lower light source 21 displayed on the bottom of the transparent basin 4 by the light guide portion 222, which contributes to miniaturization of the device. In addition, the lower illumination mechanism 20 can guide most of the light from the lower light source 21 to the reflection portion 223 of the light source block 22, so that light can be effectively used.

Here, in the light source block 22, the inner side surfaces of the fixed portion 221, the light guide portion 222, and the reflection portion 223 are set to white. In addition, the lower lighting mechanism 20 is disposed adjacent to the bottom of the storage portion 2 for lower lighting and outside of the black reflector 23.

The lower illumination mechanism 20 can effectively reflect the light of the lower light source 21 through the white inner surfaces of the parts of the light source block 22 for effective application. In addition, since most of the light incident on the black reflection plate 23 from the lower illumination mechanism 20 becomes indirect light, it is possible to prevent reflection from the black reflection plate 23 from causing the lower light source 21 to be reflected on the bottom of the transparent basin 4 .

The lower lighting mechanism 20 only needs to have one or more lower light sources 21, and in the case of having a plurality of lower light sources 21, it may be fixed in a straight line in the longitudinal direction of the light source block 22. In addition, the lower light source 21 uses an LED (Light Emitting Diode) light source, but a light source other than an LED light source may be used. In addition, the lower illumination mechanism 20 irradiates the light from the lower light source 21 obliquely below to the grains placed in the transparent bowl 4, so it is suitable to detect carcass cracks and the like.

FIG. 4 shows an explanatory diagram of the upper lighting mechanism. FIG. 5 shows a B-B cross-sectional view of FIG. 4. The upper lighting mechanism 30 includes: an upper light source 31; a lower light shielding block 32 fixed to the inner surface of the upper lighting cylinder 3; and an upper light shielding block 33. The lower light shielding block 32 includes: a fixing portion 321 that fixes the upper light source 31; and a lower light shielding portion 322 that is provided in an L-shape below the fixing portion 321 and that is transparent from the upper light source 31 toward the transparent The direct light of the basin 4 is blocked and reflected upward. The lower light shielding block 32 is fixed to the inner surface of the upper lighting cylinder 3 at the fixing portion 321.

The upper light-shielding block 33 includes an upper light-shielding portion 331 that is placed or fixed on the fixing portion 321 above the upper light source 31 and on the lower light-shielding block 32 from the upper light source 31 The upward direct light (direct light) and the reflected light reflected by the lower light blocking portion 322 are blocked and reflected downward. Here, the upper light-shielding block 33 uses a ring member defined as having a circular opening in the center and is common to the four upper lighting mechanisms 30, but it may also be used for each upper lighting mechanism 30. In terms of individual independence.

The upper lighting mechanism 30 reflects the light from the upper light source 31 at the light shielding portions 322 and 331 of the lower light shielding block 32 and the upper light shielding block 33, and irradiates the transparent light obliquely from above to the transparent The grains placed in the pot 4 can prevent the upper light source 31 from being displayed on the bottom of the transparent pot 4.

Here, the lower light blocking block 32 and the upper light blocking block 33 are set to black. In addition, among the inner surfaces of the upper lighting cylinder 3, the lower surface of the upper light shielding block 33 (upper light shielding portion 331) is set to be white below the upper surface of the upper light shielding block 33 (upper light shielding portion 331) ) Is set to black above the lower surface.

The upper lighting mechanism 30 can effectively apply the light of the upper light sources 31 through the white inner surface of the upper lighting cylinder 3 below the lower surface of the upper light blocking block 33. Furthermore, the image data of the grain placed on the transparent bowl 4 is acquired by the image acquisition mechanism 5 such as a camera from above the upper illumination cylinder 3 through the opening 35 provided in the center of the cover 34 However, because the black inner surface above the lower surface of the upper light-shielding block 33 prevents the light of the upper light sources 31 from bypassing the upper lighting cylinder 3, the sharpness of the grain can be obtained Image data.

In addition, the cylindrical body 3 for upper lighting uses a cylindrical shape, but, for example, a rectangular tube shape such as a rectangular tube shape may be used. In addition, the upper light source 31 uses an LED (Light Emitting Diode) light source, but a light source other than an LED light source may be used.

The function of the grain grade discrimination device in the embodiment of the present invention will be described. First, the transparent bowl 4 on which the grains are placed is positioned at the opening 24 provided in the upper center of the lower lighting storage portion 2. Next, the LEDs of the lower light source 21 and/or the upper light source 31 are respectively lit in the lower lighting mechanism 20 and/or the upper lighting mechanism 30, and the light is irradiated to the grains placed on the transparent bowl 4 to pass the light Through the grain and/or reflect on the grain. Then, through the opening 35 of the upper illumination cylinder 3 provided in the lid 34, the image acquisition mechanism 5 acquires the penetration image and/or reflection image of the grain placed on the transparent bowl 4.

The aforementioned grain grade discrimination device 1 extracts shape information, color, color (color information (R, G, B)) such as shape, area, length, width, etc. based on the penetration image obtained through a microcomputer (not shown) , Milky white, etc.), carcass and other optical information, and extract shape information such as shape, area, length, width based on the aforementioned reflected image, and then determine the appearance of the grain based on the extracted shape information and optical information level.

Since the lower illumination mechanism 20 irradiates light from the lower light source 21 as indirect light from obliquely below to the grains placed on the transparent bowl 4, it is possible to prevent the lower light source 21 from being reflected on the transparent bowl 4 bottom. In addition, since the upper lighting mechanism 30 irradiates light from the upper light source 31 as indirect light from above diagonally to the grains placed on the transparent bowl 4, the upper light source 31 can be prevented from being displayed on the transparent bowl 4 bottom. Therefore, according to the grain grade determining device 1 described above, the appearance grade of the grain placed on the transparent bowl 4 can be determined with good accuracy based on the penetrating light and/or reflected light from the grain.

In the grain quality determination device 1, the lower illumination mechanism 20 irradiates the grain placed on the transparent bowl 4 obliquely from the lower light source 21 as indirect light, so there is no need to avoid the foregoing The lower light source 21 is displayed on the bottom of the transparent basin 4 and the lower lighting mechanism 20 is arranged to be pulled away from the center of the transparent basin 4 to the side. In addition, in the grain grade determination device 1, the upper illumination mechanism 30 irradiates the grain placed on the transparent bowl 4 from above diagonally with light from the upper light source 31 as indirect light, so there is no need to The upper light source 31 is prevented from being displayed on the bottom of the transparent basin 4 and the upper lighting mechanism 30 is pulled away from the center of the transparent basin 4 to the side. Therefore, according to the above-mentioned grain grade discrimination device 1, it is possible to prevent the device from being enlarged in size in order to prevent the lower light source 21 and the upper light source 31 from being displayed on the bottom of the transparent bowl 4.

In addition, the grain grade determining device 1 may be disposed above the upper light-shielding block 33 and inside the upper lighting cylinder 3: a black light-shielding plate having a circular opening and having a An aperture function (not shown) in which the amount of transmitted light and/or reflected light from the aforementioned grains is adjusted. As long as the black shading plate having an aperture function is arranged inside the upper lighting cylinder 3, the above-mentioned grain grade discrimination device 1 passes through the opening 35 of the upper lighting cylinder 3 provided in the lid 34 When the image obtaining mechanism 5 obtains the penetration image and/or the reflection image of the grain placed on the transparent bowl 4, a vivid image of the grain can be obtained. In addition, the size of the opening of the black shading plate with the aperture function can be changed to adjust the range in which the image of the grain placed on the transparent bowl 4 can be obtained, so it is effective to avoid the lower light source 21 or the aforementioned The upper light source 31 is displayed at the bottom of the aforementioned transparent basin 4.

In the embodiment of the present invention described above, the case where the grain grade determining device 1 accommodates two sets of lower lighting mechanisms 20 in the lower lighting storage portion 2 is taken as an example, but it is sufficient if at least one set of lower lighting mechanisms 20 is accommodated . In addition, in the case where the lower lighting storage unit 2 houses four sets of lower lighting mechanisms 20 at equal intervals of 90 degrees, if the light sources of the four groups of lower lighting mechanisms 20 are sequentially turned on to obtain respective penetration images, or simultaneous points By illuminating four groups of light sources of the lower illumination mechanism 20 to obtain a penetration image, it is possible to detect carcass splits with good accuracy regardless of the orientation of the grains.

6 is an explanatory diagram of another example of the lower lighting mechanism, and a cross-sectional view showing the light source block. In the lower lighting mechanism 20 shown in FIG. 6, the upper surface of the reflecting portion 223 of the light source block 22 is approximately parallel to the bottom of the lower lighting storage portion 2, which is the same as the lower lighting shown in FIGS. 2 and 3. Institution 20 is different. The lower illumination mechanism 20 shown in FIG. 6 is similar to the lower illumination mechanism 20 shown in FIGS. 2 and 3, and reflects light from the lower light source 21 inside the light source block 22 and passes through the reflection section 223 or black The reflecting plate 23 irradiates the grain placed on the transparent bowl 4 from below diagonally as indirect light.

FIG. 7 is a schematic explanatory diagram of a grain grade discrimination device in another embodiment of the present invention. The grain grade discrimination device 101 shown in FIG. 7 includes the lower lighting storage unit 2 and only includes the lower lighting mechanism 20, and does not include the upper lighting cylinder. This point is the same as the grain grade shown in FIG. The discrimination device 1 is different. The grain grade discrimination device 101 shown in FIG. 7 is suitable for inspection of carcass and the like visually, similar to the device described in Japanese Patent Laid-Open No. 2014-173884.

The grain grade discrimination device 101 shown in FIG. 7 also irradiates the light from the lower light source 21 as indirect light from diagonally below to the grains placed in the transparent bowl 4, so that the aforementioned lower light source 21 can be prevented from being displayed on The bottom of the transparent bowl 4 can judge the appearance grade of the grain with good accuracy based on the penetrating light from the grain.

FIG. 8 is a schematic explanatory diagram of a modification of the grain grade discrimination device shown in FIG. 1. In the grain grade discrimination device 1 shown in FIG. 8, the lower illumination mechanism 20 is arranged directly under the transparent bowl 4, which is different from the grain grade discrimination device shown in FIG. 1. In this case, the lower lighting mechanism 20 is configured such that, for example, a circular cup-shaped light source block 22 that fixes the lower light source 21 on the inside is stored in the lower lighting storage portion 2 in an inverted shape, and the light source area The outer side of the block 22 is set to black to function as a background. The lower lighting storage portion 2 may be defined as having a circular space in plan view.

In the grain grade determination device 1 shown in FIG. 8, the lower illumination mechanism 20 reflects light from the lower light source 21 on the inner side surfaces of the light source block 22 and the lower illumination storage portion 2 as an indirect The light is irradiated from below to the grain placed on the transparent bowl 4. The grain grade discrimination device 1 shown in FIG. 8 can also prevent the lower light source 21 from being displayed on the bottom of the transparent bowl 4, so that the appearance of the grain can be judged with good accuracy based on the penetrating light from the grain. level.

In addition, in the example shown in FIG. 8, the upper lighting mechanism 30 is omitted, but it may be determined that the upper lighting mechanism 30 is provided on the inner surface of the upper lighting cylinder 3 in the same way as the grain grade determining device shown in FIG. 1. . In addition, the grain grade discrimination device 1 shown in FIG. 8 may also be configured to have a configuration that does not include the upper lighting cylinder 3 as in the grain grade discrimination device 101 shown in FIG. 7.

The grain grade determining device in the embodiment of the present invention is not limited to determining the appearance grade of rice grains, and can be used to determine the appearance grade of various grains.

The present invention is not limited to the above-mentioned embodiments, and its configuration can be appropriately changed without departing from the scope of the invention. [Industrial Utilization]

The grain grade discrimination device of the present invention can prevent the light source from being displayed on the bottom of the transparent sample tray, and can judge the appearance grade of the grain placed on the sample tray with good accuracy, and has excellent practicality.

1: Grain grade discrimination device 2: Storage section for lower lighting 20: Lower lighting mechanism 21: Lower light source (LED) 22: Light source block 221: Fixed part 222: Light guide 223: Reflection Department 23: Black reflector (background) 24: opening 3: cylinder for upper lighting 30: Upper lighting mechanism 31: Upper light source (LED) 32: Lower shading block 321: fixed part 322: Lower light shield 33: Upper shading block 331: Upper light shield 34: Cover 35: opening 4: Transparent basin 5: Image acquisition mechanism (sensor) 101: Grain grade discrimination device

Fig. 1 is a schematic explanatory diagram of a grain grade discrimination device. Fig. 2 is an explanatory diagram of a lower lighting mechanism. Fig. 3 is a cross-sectional view taken along line A-A of Fig. 2. Fig. 4 is an explanatory diagram of an upper lighting mechanism. Fig. 5 is a sectional view taken along line B-B in Fig. 4. 6 is an explanatory diagram of another example of the lower lighting mechanism. Fig. 7 is a schematic explanatory diagram of another grain grade discrimination device. 8 is a schematic explanatory diagram of a modification of the grain grade discrimination device of FIG. 1.

1: Grain grade discrimination device

2: Storage section for lower lighting

20: Lower lighting mechanism

23: Black reflector (background)

24: opening

3: cylinder for upper lighting

30: Upper lighting mechanism

34: Cover

35: opening

4: Transparent basin

5: Image acquisition mechanism (sensor)

Claims (9)

A grain grade discriminating device that irradiates light to grains placed on a sample tray with a transparent bottom surface, allows light to penetrate the grains, and judges the appearance of the grains based on the penetrating light from the grains Grade, where, An illumination mechanism with a light source is arranged below the sample tray, The illumination mechanism irradiates indirect light to the grains placed on the sample tray. For example, the device for judging the grain grade of item 1 of the patent scope, in which The lighting mechanism has a light source block arranged obliquely below the sample tray, and the light source is arranged inside the light source block, The illumination mechanism reflects the light from the light source inside the light source block, and irradiates the grain placed on the sample tray diagonally from below as indirect light. For example, the device for judging the grain quality of item 2 of the patent scope, in which The light source block is provided with: a fixing part to fix the light source; a light guide part located at the upper part of the fixing part and extending toward the center side of the sample tray to direct light from the light source toward the bottom of the sample tray Shield and reflect it; and the reflection part, which is located at the lower part of the fixed part, and reflects the direct light from the light source or the reflected light from the light guide part; And the illumination mechanism reflects the light from the light source on the inner surface of each part of the light source block, and irradiates the grain placed on the sample tray diagonally as indirect light. For example, the device for judging the grain grade of item 3 of the patent scope, in which A black reflecting plate serving as a background is arranged below the sample tray, and on the other hand, the lighting mechanism is arranged adjacent to the outer side of the black reflecting plate, and the inner side surfaces of the aforementioned portions of the light source block are arranged Into white. For example, the grain grade discrimination device according to any one of the items 1 to 4 of the patent application scope, wherein, The illumination mechanism arranges a plurality of obliquely below the sample tray, and irradiates light from the light source as indirect light to grains placed on the sample tray from a plurality of directions. For example, the grain grade discrimination device according to any one of the items 1 to 4 of the patent application scope, wherein, The grain grade discrimination device irradiates light to the grains mounted on the sample tray with a transparent bottom surface, and causes light to penetrate the grains and/or reflect on the grains, based on the penetration from the grains Transmit and/or reflect light to determine the appearance grade of the grain, The upper light source and the upper lighting mechanism are arranged diagonally above the sample tray. The upper lighting mechanism includes: a fixing portion that fixes the upper light source; a lower light-shielding portion, which is located below the upper light source, and blocks direct light from the upper light source toward the sample tray and reflects it upward; And the upper light-shielding part is located above the upper light source, and blocks direct light from the upper light source upward and reflected light reflected from the lower light-shielding part to reflect downward; And the upper illumination mechanism reflects the light from the upper light source at the light shielding portions, and irradiates the grains placed on the sample tray diagonally as indirect light. For example, the device for judging the grain grade of item 6 of the patent scope, in which The upper illumination mechanism is provided on the inner surface of the cylinder, and the light from the upper light source is used as indirect light to irradiate the grains placed on the sample tray from the plural directions. For example, the grain quality judgment device of the seventh item of the patent scope, in which Each of the light-shielding portions is set to black, and on the other hand, the inner surface of the cylinder is set to be white below the upper light-shielding portion and black above the upper light-shielding portion. For example, the grain quality judgment device of the seventh item of the patent scope, in which Above the upper light-shielding portion and inside the cylinder, a black light-shielding plate with a circular opening is provided to adjust the amount of light transmitted and/or reflected from the grain.

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