A device for detecting the chalky white kernel rate of rice

Abstract

The utility model discloses a rice chalky white particle rate detection device belongs to rice chalky white detection technical field, including base, the upper surface assembly of base has the support frame, the upper surface assembly of support frame has the upper cover, and the parallel rotation assembly has the pivot in support frame, and the outer wall fixed mounting of pivot has the transparent cylinder, and the outer wall of transparent cylinder evenly has the turnover groove, and the upper fixed mounting of support frame inner wall and located transparent cylinder just above has the upper reflection component, and the fixed mounting of support frame inner wall and located transparent cylinder below has the lower reflection component, the utility model discloses through power motor through synchronous gear shape belt drive all pivot and transparent cylinder synchronous same direction rotation, and the turnover groove that the outer wall of transparent cylinder sets up can drive the rice kernel located in between turnover, so that the detection head can gather the full -circle image of rice kernel, and all exposure in the outside chalky white area can be captured, fundamentally eliminates the missed detection problem of traditional static single -sided detection because of the visual angle obstruction, and the detection result is more accurate and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of rice chalkiness detection technology, and specifically provides a device for detecting the chalkiness grain rate of rice. Background Technology

[0002] The chalky grain rate of rice is an important indicator for evaluating the appearance and processing quality of rice. Most existing rice chalky grain rate detection devices use a static single-sided imaging method, that is, a camera takes a picture of the rice grains laid flat on the detection table, and then the image processing software analyzes the chalky area percentage. However, this detection method has the following shortcomings: First, the detection perspective is limited, making it easy to miss detections. Chalk may be distributed on multiple parts of the rice grain, such as the ventral, dorsal, or lateral sides, but static single-sided detection can only acquire an image of the side of the rice grain facing upwards. For rice grains with chalk on the dorsal or lateral sides, single-sided imaging cannot capture the chalky area, causing the rice grain to be misclassified as a non-chalky grain, resulting in an underestimation of the chalky grain rate and an incomplete and inaccurate detection result. The problem of missed detection is particularly prominent for rice samples with unevenly distributed chalk.

[0003] Second, inadequate lighting design affects recognition accuracy. Existing devices typically use a top ring light or a single-sided direct light source, which easily creates strong localized reflective and shadowed areas on the rice grain surface. The chalky area itself is highly reflective, and against this strong reflective background, the grayscale difference between it and the normal endosperm area is weakened; while shadowed areas may obscure the chalky area, making it difficult for image processing software to accurately segment and identify the chalky boundary, resulting in misjudgments or missed judgments.

[0004] Therefore, there is a need for a device that can acquire images of the entire circumference of rice grains, provide uniform illumination, and has a simple structure for detecting the chalky grain rate of rice. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a device for detecting the chalky grain rate of rice.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rice chalky grain rate detection device, comprising a base, a support frame mounted on the upper surface of the base, a top cover mounted on the upper surface of the support frame, a fixing plate mounted on the side of the upper surface of the base, a power motor fixedly installed on the outer wall of the fixing plate, a drive gear fixedly installed at the output end of the power motor, rotating shafts mounted side by side inside the support frame, a transparent cylinder fixedly installed on the outer wall of the rotating shaft, a transmission gear fixedly installed at the end of the rotating shaft, synchronous toothed belts provided between adjacent transmission gears and between the drive gear and the transmission gear, a rotating groove evenly opened on the outer wall of the transparent cylinder, an upper reflective component fixedly installed on the inner wall of the support frame and directly above the transparent cylinder, a lower reflective component fixedly installed on the inner wall of the support frame and below the transparent cylinder, the upper and lower reflective components being staggered, a lamp plate fixedly installed in the inner cavity of the base, and a reflective film provided on the inner wall of the top cover.

[0007] Furthermore, the support frame consists of two positioning plates and two mounting plates. The two positioning plates are fixedly installed at both ends between the two mounting plates. The surface of the mounting plate is evenly provided with circular holes, and the two ends of the rotating shaft are respectively inserted into the circular holes. The two ends of the upper reflector and the two ends of the lower reflector are respectively fixedly installed on the inner wall of the mounting plate. The length of the transparent tube is the same as the distance between the two mounting plates.

[0008] Furthermore, the lower surface of the positioning plate is provided with a slot, and the upper surface of the base is integrally formed with a protrusion, which is inserted into the slot.

[0009] Furthermore, transmission keys are uniformly fixedly installed on the outer wall of the rotating shaft, and a spline groove is opened at one end of the transparent cylinder, with the transmission keys inserted into the spline groove.

[0010] Furthermore, the outer wall of the shaft is coated with a reflective paint.

[0011] Furthermore, the upper reflector assembly includes an upper mounting rod, which is fixedly installed between two mounting plates. The lower surface of the mounting rod is uniformly fixedly equipped with upper connecting rods corresponding to the flip groove. The lower surface of each upper connecting rod is fixedly equipped with an upper reflector, which is disposed within the flip groove.

[0012] Furthermore, the lower reflector assembly includes a lower mounting rod, which is fixedly installed between two mounting plates. The upper surface of the lower mounting rod is uniformly fixedly equipped with a lower connecting rod corresponding to the flip groove. The lower connecting rod is T-shaped, and lower reflectors are symmetrically fixedly installed at the left and right ends of the upper side of the lower connecting rod. The lower reflectors are disposed in the flip groove.

[0013] Furthermore, the upper surface of the positioning plate is provided with an installation groove, and the lower surface of the upper cover is integrally formed with an installation strip corresponding to the installation groove, and the installation strip is inserted into the installation groove. The upper cover is semi-cylindrical in shape, and a fixing rod is fixedly installed on the inner wall of the upper cover. The fixing rod is located directly above the upper reflector assembly, and a detection head corresponding to the flipping groove is uniformly fixedly installed on the lower surface of the fixing rod.

[0014] Furthermore, a blocking plate is fixedly installed on the inner wall of the positioning plate.

[0015] The beneficial effects of using this utility model are: This invention uses a power motor to drive all the rotating shafts and the transparent cylinder to rotate synchronously in the same direction via a synchronous toothed belt. The flipping groove on the outer wall of the transparent cylinder can cause the rice grains located there to flip, so that the detection head can collect the full circumference image of the rice grains. All exposed chalky areas can be captured, which fundamentally eliminates the problem of missed detection caused by the obstruction of the viewing angle in traditional static single-sided detection, and the detection results are more accurate and reliable.

[0016] This invention, by coating the outer wall of the rotating shaft with reflective paint and setting an upper and lower reflective component on the outside of the flipping groove, together with the lamp plate fixedly installed in the inner cavity of the base and the reflective film set on the inner wall of the upper cover, constitutes a complete light path guiding system. It can effectively allow light to evenly illuminate the surface of rice grains from multiple angles, effectively eliminate reflections and shadows, make the image obtained by the detection head clearer, improve the accuracy of chalky identification, and ensure that the accurate chalky grain rate is finally obtained. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 This is a three-dimensional schematic diagram of the present invention after the top cover has been removed.

[0019] Figure 3 This is a partial cross-sectional view of the rotating shaft and the transparent cylinder of this utility model.

[0020] Figure 4 This is a schematic diagram showing the distribution of the rotating shaft and the transparent cylinder of this utility model.

[0021] Figure 5 This is a three-dimensional schematic diagram of the rotating shaft and transparent cylinder of this utility model.

[0022] Figure 6 This is a three-dimensional schematic diagram of the top cover of this utility model.

[0023] The attached reference numerals include: 1. Base, 2. Support frame, 21. Positioning plate, 211. Blocking plate, 212. Mounting slot, 213. Slot, 22. Mounting plate, 3. Fixing plate, 4. Power motor, 5. Rotating shaft, 51. Transmission gear, 52. Synchronous toothed belt, 53. Transmission key, 6. Transparent cylinder, 61. Flipping slot, 7. Upper reflector assembly, 71. Upper mounting rod, 72. Upper connecting rod, 73. Upper reflector, 8. Lower reflector assembly, 81. Lower mounting rod, 82. Lower connecting rod, 83. Lower reflector, 9. Top cover, 91. Fixing rod, 92. Detection head. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1 to 6 A device for detecting chalky grain rate in rice includes a base 1, a support frame 2 mounted on the upper surface of the base 1, a top cover 9 mounted on the upper surface of the support frame 2, a fixing plate 3 mounted on the side of the upper surface of the base 1, a power motor 4 fixedly mounted on the outer wall of the fixing plate 3, a drive gear fixedly mounted on the output end of the power motor 4, a rotating shaft 5 mounted side by side inside the support frame 2, a transparent cylinder 6 fixedly mounted on the outer wall of the rotating shaft 5, a transmission gear 51 fixedly mounted on the end of the rotating shaft 5, a synchronous toothed belt 52 provided between adjacent transmission gears 51 and between the drive gear and the transmission gear 51, a rotating groove 61 evenly opened on the outer wall of the transparent cylinder 6, an upper reflective component 7 fixedly mounted on the inner wall of the support frame 2 and directly above the transparent cylinder 6, a lower reflective component 8 fixedly mounted on the inner wall of the support frame 2 and below the transparent cylinder 6, the upper reflective component 7 and the lower reflective component 8 being staggered, a lamp plate fixedly mounted in the inner cavity of the base 1, a reflective film provided on the inner wall of the top cover 9, and a reflective coating on the outer wall of the rotating shaft 5.

[0026] During testing, rice grains are placed in the flipping grooves 61 of two adjacent transparent cylinders 6. The motor 4 drives the drive gear to rotate, and then through the transmission of the synchronous toothed belt 52, all the rotating shafts 5 and the transparent cylinders 6 can rotate synchronously in the same direction. The rotation of the transparent cylinders 6 can cause the rice grains located in the flipping grooves 61 to flip, so that the full-circumference image of the rice grain can be captured during the detection. All exposed chalky areas can be captured, eliminating the missed detection caused by the viewpoint obstruction in the traditional method. In addition, after the rice grains are rotated, a three-dimensional model of the rice grains can be built through multi-view images, and then the chalky volume ratio can be calculated, which can more realistically reflect the degree of quality deterioration of the rice grains and is more meaningful for rice grain grading.

[0027] The purpose of the upper reflector 7 and the lower reflector 8 is to guide the direction of light emission, ensure that the light from the light panel effectively illuminates the rice grains, and improve the lighting effect.

[0028] In this embodiment, the base 1 uses a light panel, but multiple point light sources or light strips can also be used.

[0029] Specifically, the support frame 2 consists of two positioning plates 21 and two mounting plates 22. The two positioning plates 21 are fixedly installed at both ends between the two mounting plates 22. The surface of the mounting plates 22 is evenly provided with round holes, and the two ends of the rotating shaft 5 are respectively inserted into the round holes. The two ends of the upper reflector 7 and the two ends of the lower reflector 8 are respectively fixedly installed on the inner wall of the mounting plate 22. The length of the transparent tube 6 is the same as the distance between the two mounting plates 22. A blocking plate 211 is fixedly installed on the inner wall of the positioning plate 21.

[0030] The spacing between adjacent transparent tubes 6 can be adjusted according to the size of the rice grains. It is necessary to ensure that the rice grains are located within the adjacent flipping grooves 61 and do not fall out of the gap. The position of the round hole can be adjusted according to different varieties of rice.

[0031] The baffle plate 211 blocks the area inside the support frame 2 and outside the transparent tube 6 to prevent rice grains from falling from both sides.

[0032] Specifically, the lower surface of the positioning plate 21 is provided with a slot 213, and the upper surface of the base 1 is integrally formed with a protrusion, which is inserted into the slot 213.

[0033] The slot 213 is not a through slot. The slot 213 and the protrusion are designed to ensure the stability of the support frame 2 during installation.

[0034] Specifically, transmission keys 53 are uniformly fixedly installed on the outer wall of the rotating shaft 5, and a spline groove is opened at one end of the transparent cylinder 6, with the transmission keys 53 inserted into the spline groove.

[0035] The keyed connection ensures that the transparent cylinder 6 can rotate together with the rotating shaft 5.

[0036] Specifically, the upper reflector assembly 7 includes an upper mounting rod 71, which is fixedly installed between two mounting plates 22. The lower surface of the upper mounting rod 71 is uniformly fixedly equipped with upper connecting rods 72 corresponding to the flip groove 61. The lower surface of the upper connecting rods 72 is fixedly equipped with upper reflectors 73, which are disposed in the flip groove 61.

[0037] Specifically, the lower reflector assembly 8 includes a lower mounting rod 81, which is fixedly installed between two mounting plates 22. The upper surface of the lower mounting rod 81 is uniformly fixedly equipped with a lower connecting rod 82 corresponding to the flip groove 61. The lower connecting rod 82 is T-shaped, and the upper left and right ends of the lower connecting rod 82 are symmetrically fixedly equipped with a lower reflector 83. The lower reflector 83 is disposed in the flip groove 61.

[0038] The rotating shaft 5 is coated with reflective paint, and an upper reflective component 7 and a lower reflective component 8 are set on the outside of the rotating groove 61, dividing the rotating groove 61 into six parts. The light entry channel is between the two lower reflective plates 83 at the bottom, the lower reflective plate 83 areas are on both sides, the light exit channels are located on both sides of the rotating groove 61 at the top, and finally the upper reflective plate 73 area is located at the top. By setting the upper reflective plate 73, the lower reflective plate 83 and the reflective paint of the rotating shaft 5, it is ensured that the light can be emitted from the light exit channels and then fully illuminate the rice grains, providing good observation lighting.

[0039] By adjusting the position of the round hole for different varieties of rice grains, the dimensions of the upper reflector 73 and the lower reflector 83 can be adjusted.

[0040] For the flipping groove 61, micro protrusions can be evenly arranged on its surface. When it rotates, the micro protrusions can better drive the rice grains to rotate.

[0041] Specifically, the upper surface of the positioning plate 21 is provided with an installation groove 212, and the lower surface of the upper cover 9 is integrally formed with an installation strip corresponding to the installation groove 212, and the installation strip is inserted into the installation groove 212. The upper cover 9 is semi-cylindrical in shape, and a fixing rod 91 is fixedly installed on the inner wall of the upper cover 9. The fixing rod 91 is located directly above the upper reflective component 7, and a detection head 92 corresponding to the flip groove 61 is uniformly fixedly installed on the lower surface of the fixing rod 91.

[0042] The installation slot 212 and the installation strip can improve the stability of the top cover 9 during installation.

[0043] The detection head 92 mainly uses a camera to acquire images. The image information is transmitted to a computer or other terminal for analysis to obtain the chalky percentage information. Then, based on the corresponding data table, the quality of the rice grains is judged and graded. Multiple sets of tests are performed to finally obtain the chalky grain rate.

[0044] This device can obtain a full-circumference image of rice grains, thereby obtaining the chalky volume ratio. The grading threshold for the chalky volume ratio can be determined by comparing multiple sets of tests with the area ratio.

[0045] The upper cover 9 is equipped with a reflective film, which can reflect most of the light from the lamp board and shine it on the rice grain again, effectively eliminating shadows and making the image obtained by the detection head 92 clearer, thus improving detection accuracy.

[0046] The above content is only a preferred embodiment of this utility model. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the concept of this utility model. As long as these changes do not depart from the concept of this utility model, they all fall within the protection scope of this utility model.

Claims

1. A device for detecting chalky grain rate in rice, characterized in that: The device includes a base, a support frame mounted on the upper surface of the base, a top cover mounted on the upper surface of the support frame, a fixing plate mounted on the side of the upper surface of the base, a power motor fixedly mounted on the outer wall of the fixing plate, a drive gear fixedly mounted on the output end of the power motor, rotating shafts mounted side-by-side inside the support frame, a transparent cylinder fixedly mounted on the outer wall of the rotating shaft, a transmission gear fixedly mounted on the end of the rotating shaft, synchronous toothed belts provided between adjacent transmission gears and between the drive gear and the transmission gear, evenly spaced flip grooves on the outer wall of the transparent cylinder, an upper reflector fixedly mounted on the inner wall of the support frame directly above the transparent cylinder, a lower reflector fixedly mounted on the inner wall of the support frame below the transparent cylinder, the upper and lower reflectors being staggered, a light panel fixedly mounted in the inner cavity of the base, and a reflective film provided on the inner wall of the top cover.

2. The rice chalky grain rate detection device according to claim 1, characterized in that: The support frame consists of two positioning plates and two mounting plates. The two positioning plates are fixedly installed at both ends between the two mounting plates. The surface of the mounting plates is evenly provided with circular holes, and the two ends of the rotating shaft are respectively inserted into the circular holes. The two ends of the upper reflector and the two ends of the lower reflector are respectively fixedly installed on the inner wall of the mounting plate. The length of the transparent tube is the same as the distance between the two mounting plates.

3. The rice chalky grain rate detection device according to claim 2, characterized in that: The lower surface of the positioning plate has a slot, and the upper surface of the base has an integrally formed protrusion that is inserted into the slot.

4. The rice chalky grain rate detection device according to claim 1, characterized in that: The outer wall of the rotating shaft is uniformly fixed with transmission keys, and one end of the transparent cylinder is provided with a spline groove, and the transmission keys are inserted into the spline groove.

5. The rice chalky grain rate detection device according to claim 1, characterized in that: The outer wall of the shaft is coated with reflective paint.

6. The rice chalky grain rate detection device according to claim 1, characterized in that: The upper reflective assembly includes an upper mounting rod, which is fixedly installed between two mounting plates. The lower surface of the mounting rod is uniformly fixedly equipped with upper connecting rods corresponding to the flip groove. The lower surface of the upper connecting rod is fixedly equipped with an upper reflector, which is located in the flip groove.

7. The rice chalky grain rate detection device according to claim 1, characterized in that: The lower reflector assembly includes a lower mounting rod, which is fixedly installed between two mounting plates. The upper surface of the lower mounting rod is uniformly fixedly equipped with a lower connecting rod corresponding to the flip groove. The lower connecting rod is T-shaped, and lower reflectors are symmetrically fixedly installed at the left and right ends of the upper side of the lower connecting rod. The lower reflectors are set in the flip groove.

8. The rice chalky grain rate detection device according to claim 2, characterized in that: The upper surface of the positioning plate is provided with an installation groove, and the lower surface of the upper cover is integrally formed with an installation strip corresponding to the installation groove, and the installation strip is inserted into the installation groove. The upper cover is semi-cylindrical in shape, and a fixing rod is fixedly installed on the inner wall of the upper cover, and the fixing rod is located directly above the upper reflective component. The lower surface of the fixing rod is uniformly fixed with a detection head corresponding to the flipping groove.

9. The rice chalky grain rate detection device according to claim 2, characterized in that: A baffle plate is fixedly installed on the inner wall of the positioning plate.

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