Rice quality detection device and detection method

Abstract

The invention discloses a rice quality detection device and a detection method, and belongs to the technical field of rice quality detection. In order to solve the problems that a large amount of dust is contained in rice, rice grains are easily sucked away during dust collection, loss is caused, the screening efficiency is low, and image collection is inaccurate, the dust removal feeding mechanism effectively removes dust and impurities in the rice grains through a dust collection channel and a dust collection fan; a side baffle outside a dust collection opening can effectively prevent rice from being sucked in in the dust collection process, the design of a convex edge rotating wheel enables a rotating drum to be regularly toggled up so as to drive an impurity screening mechanism to continuously shake, the shaking can effectively screen out the rice from screening holes, and through rotation of a rotating roller and the design of a rice groove, the rice can be effectively screened out. According to the invention, a small amount of rice is conveyed in batches, so that the detection mechanism can more accurately collect the image of each rice, the detection accuracy is improved, quality evaluation is carried out by integrating a plurality of key characteristics, the quality condition of rice particles can be more comprehensively reflected, and the product quality control level is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rice quality detection, and in particular to a rice quality detection device and a detection method. Background Art

[0002] Rice is a food made from rice grains after cleaning, husking, milling, and finishing. The quality of rice is directly related to people's nutritional intake and health. Therefore, it is particularly necessary to accurately test the quality of rice.

[0003] However, there are still the following problems in actual operation:

[0004] Dust and impurities in rice will have a great impact on the results of rice quality inspection. At the same time, when screening rice, automatic sliding screening may lead to slow screening efficiency, causing some rice to be discharged together with impurities. At the same time, when testing rice, rice often accumulates, affecting the image acquisition effect. Summary of the invention

[0005] The object of the present invention is to provide a rice quality detection device and a detection method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rice quality detection device, comprising a detection chassis, a dust removal and feeding mechanism is arranged on the top of the detection chassis, a diversion mechanism is connected to the bottom of the dust removal and feeding mechanism, the diversion mechanism is arranged inside the detection chassis, an impurity screening mechanism is arranged below the diversion mechanism, a material receiving slope is arranged below the impurity screening mechanism, a collecting box is connected to one side of the material receiving slope, a conveying mechanism is arranged below the collecting box, a detection mechanism is arranged above the conveying mechanism, a rice outlet and an impurity cleaning port are respectively opened on both sides of the detection chassis, the rice outlet is arranged at the conveying tail end of the conveying mechanism, and the impurity cleaning port is opened on one side of the collecting box.

[0007] Furthermore, the dust removal feeding mechanism includes a feeding trough and a dust suction channel. The feeding trough is connected to the top of the dust suction channel in a bucket shape, and the bottom of the dust suction channel is connected to the diversion mechanism. A feeding port is provided at the connection between the feeding trough and the dust suction channel, and the bottom of the feeding port is rotatably connected to a rotating sealing plate, and the side of the rotating sealing plate is connected to a turning handle, dust suction ports are provided on both sides of the dust suction channel, side baffles are provided on the outside of the dust suction port, a pull-in filter plate is provided inside the dust suction port, a dust drawer is provided below the pull-in filter plate, and a dust suction fan is provided on the side of the pull-in filter plate away from the dust suction port.

[0008] Furthermore, the diversion mechanism includes a receiving interface and a diversion bin. The top of the receiving interface is connected to the dust removal feeding mechanism. A bidirectional spiral conveying shaft is arranged inside the diversion bin. The bidirectional spiral conveying shaft is provided with spiral conveying plates in opposite directions from the middle to both sides. The diversion port is opened below the bidirectional spiral conveying shaft, and the diversion port is opened above the impurity screening mechanism.

[0009] Furthermore, the impurity screening mechanism is arranged at an angle, a sieve plate channel is provided on the top surface of the impurity screening mechanism, sieve holes are provided on the bottom surface of the sieve plate channel, adjacent sieve plate channels are separated by partitions, support frames are provided on both sides of the diversion bin, the outer side of the support frame is connected to a first motor, a first belt transmission assembly is provided inside the support frame, the first belt transmission assembly includes two pulleys and a transmission belt, the two pulleys are connected through transmission belt transmission, and the rotating shafts of the two pulleys can be rotatably connected to the inner side of the support frame, the two ends of the rotating shaft of one pulley are respectively connected to the output shaft of the first motor and the rotating shaft of the bidirectional spiral transmission shaft, a convex wheel is connected to the rotating shaft of the other pulley, a semicircular protrusion is provided on the edge of the convex wheel, both sides of the impurity screening mechanism are fixedly connected with a rotating drum, the rotating drum is sleeved on the outside of the convex wheel, first shaft pin ends are provided on both sides of the impurity screening mechanism away from one end of the diversion mechanism, and the impurity screening mechanism is connected to the collecting box through the first shaft pin end.

[0010] Furthermore, an impurity trough and a rice trough are provided inside the collecting box, a second shaft pin end is provided on the top of the impurity trough, the impurity trough is connected to the impurity screening mechanism through the second shaft pin end, the bottom of the impurity trough is connected to the impurity cleaning port, the top of the rice trough is connected to the material receiving slope, a roller is rotatably provided at the bottom of the rice trough, a fine groove is provided on the outer side of the roller, a second belt drive assembly is connected to the rotating shaft of the roller, and the roller is connected to the transmission mechanism through the second belt drive assembly.

[0011] Furthermore, the conveying mechanism includes a base and a conveyor belt, the conveyor belt is provided with strip-shaped transverse grooves, a second motor is arranged on one side of the base, and the central shaft of the second motor is connected to the roller transmission through a second belt transmission assembly.

[0012] Furthermore, the detection mechanism includes a mounting frame, one side of which is fixedly connected to the inside of the detection chassis, a detection terminal is arranged on the top of the mounting frame, an imaging acquisition camera is arranged on the bottom of the mounting frame, the lens of the imaging acquisition camera is facing the transmission mechanism, and the imaging acquisition camera is electrically connected to the detection terminal.

[0013] Further, a flow sensor 1 is arranged at the dust suction port, and is used to detect the air flow through the dust suction port;

[0014] A second flow sensor is arranged on the dust suction fan and is used to detect the air flow of the dust suction fan;

[0015] A particle sensor 1, arranged on the pumping filter plate, for detecting the concentration of particles passing through the pumping filter plate;

[0016] A second particle sensor is disposed on the side baffle plate and is used to detect the concentration of particles passing therethrough;

[0017] A controller and an alarm are arranged on the detection chassis, and the controller is electrically connected to the flow sensor 1, the flow sensor 2, the particle sensor 1, the particle sensor 2 and the alarm;

[0018] The controller controls the alarm to work based on the flow sensor 1, the flow sensor 2, the particle sensor 1, and the particle sensor 2, including the following steps:

[0019] Step 1: According to formula (1) and the detection values ​​of the flow sensor 1, the flow sensor 2, the particle sensor 1, and the particle sensor 2, the clogging state index of the pull-in filter plate is calculated:

[0020]

[0021] Wherein, X is the clogging state index of the pluggable filter plate, V1 is the detection value of the flow sensor 1, V2 is the detection value of the flow sensor 2, ρ1 is the detection value of the particle sensor 1, ρ2 is the detection value of the particle sensor 2, R1 is the filter hole radius of the pluggable filter plate, R2 is the radius of the dust suction port, S1 is the cross-sectional area of ​​the dust suction port, L1 is the mean free path of gas molecules in the dust removal feeding mechanism, L2 is the characteristic length of the feed trough, θ1 is the inclination angle of the inclined surface at the entrance of the feed trough, θ2 is the inclination angle of the dust suction port, is the maximum inclination angle of the air passing through the side baffle during the suction of the dust collecting fan, C is the Knudsen number of the air in the dust collecting feeding mechanism, Re is the Reynolds number of the air in the dust collecting feeding mechanism, Pr is the Prandtl number of the air in the dust collecting feeding mechanism, ln is a logarithmic function, and e is a natural constant, which is 2.72;

[0022] Step 2: The controller compares the blockage state index of the pluggable filter plate with a preset blockage state index. When the blockage state index of the pluggable filter plate is greater than the preset blockage state index, the controller controls the alarm to issue an alarm prompt.

[0023] Furthermore, the detection terminal includes:

[0024] An image acquisition module is used to capture the image of rice grains on the conveying mechanism in real time through an imaging acquisition camera, and transmit the image data to the image processing module in units of frames;

[0025] An image processing module is used to pre-process the collected rice grain image and binarize the rice grain image by threshold segmentation;

[0026] A feature extraction module is used to extract key features of rice grains from the processed image, wherein the key features include shape contour, size, and texture, extract the shape contour of the rice grains by edge detection, calculate shape parameters of the rice grains according to the contour information, wherein the shape parameters include roundness and aspect ratio, and extract texture features of the rice grains based on texture analysis;

[0027] A quality assessment module is used to assess the integrity of rice grains based on the extracted key features and the rice grain integrity assessment model, obtain the integrity assessment results of the rice grains, classify the rice quality according to the assessment results, and generate corresponding quality test results;

[0028] The result output module is used to output the quality inspection results of the quality assessment module in a visual form and save the results to the database and file system.

[0029] Another technical problem to be solved by the present invention is to provide a detection method of a rice quality detection device, comprising the following steps:

[0030] Step 1: Put the rice into the detection cabinet through the dust removal feeding mechanism. During the falling process of the rice, the dust removal feeding mechanism absorbs the dust floating in the rice, and then the rice enters the diversion mechanism;

[0031] Step 2: The diversion mechanism evenly diverts the rice and introduces it into the impurity screening mechanism. The impurity screening mechanism continuously shakes to screen the rice, and the screened rice falls into the receiving slope and slides into the collection box;

[0032] Step 3: The collection box puts the rice into the conveying mechanism in batches, and the conveying mechanism conveys the rice. During the conveying process, the detection mechanism collects and detects the image of the rice;

[0033] Step 4: Preprocess and binarize the collected rice grain images, extract the key features of the rice grains from the processed images, evaluate the integrity of the rice grains based on the extracted key features and the rice grain integrity assessment model, and output the quality inspection results of the quality assessment module in a visual form.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The dust removal and feeding mechanism of the present invention effectively removes dust and impurities in rice particles through the dust suction channel and the dust suction fan, which helps to reduce the influence of these impurities on the rice quality detection results, thereby improving the accuracy of the detection. The design of the rotating sealing plate allows the user to open or close the feeding port as needed, which is convenient for the feeding and stopping of rice particles. The side baffle outside the dust suction port can effectively prevent the rice from being sucked in during the dust suction process. The plug-in filter plate design inside the dust suction port makes cleaning and maintenance easier. The user can easily take out the plug-in filter plate for cleaning. At the same time, the dust accumulation drawer is also convenient for collecting and processing dust.

[0036] 2. The present invention drives the first belt drive assembly to work through the first motor, and can simultaneously drive the bidirectional spiral transmission shaft and the convex edge wheel to rotate, thereby achieving uniform diversion of rice and continuous shaking of the impurity screening mechanism. The design of the convex edge wheel allows the rotating drum to be regularly lifted, thereby driving the impurity screening mechanism to continuously shake. This shaking can effectively screen the rice from the sieve holes and prevent larger impurities from passing through.

[0037] 3. The present invention realizes the transmission of small amounts of rice in batches through the rotation of the roller and the design of the rice trough, thereby avoiding a large amount of rice being transmitted to the detection mechanism at one time, resulting in inaccurate or overlapping image acquisition. The transmission in batches is conducive to the detection mechanism to more accurately collect the image of each rice grain, thereby improving the accuracy of detection. Through the design of the strip-shaped transverse grooves on the surface of the conveyor belt, the rice can stay and be transmitted on the transmission mechanism more stably and orderly, thereby avoiding scattering and confusion during the transmission process.

[0038] 4. The present invention accurately processes and analyzes the rice grain image through the image processing module and the feature extraction module, and can accurately extract the key features of the rice grain, including shape profile, size and texture, etc., to ensure the high precision and accuracy of quality detection. The image acquisition module can capture the rice grain image on the transmission mechanism in real time, and immediately process and analyze it, so that the detection process has real-time performance, can timely discover and deal with quality problems, improve production efficiency and product quality, the entire detection process is automated, no manual intervention is required, labor costs are reduced, the efficiency and consistency of detection are improved, and the influence of human factors on the detection results is reduced. By comprehensively evaluating the quality of multiple key features, the quality status of the rice grain can be more comprehensively reflected, which is helpful to discover potential quality problems and improve the level of product quality control. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0041] Figure 3 It is a schematic diagram of the structure of the dust removal and feeding mechanism of the present invention;

[0042] Figure 4 It is a schematic diagram of the diversion mechanism structure of the present invention;

[0043] Figure 5 It is a schematic diagram of the structure of the impurity screening mechanism of the present invention;

[0044] Figure 6 It is a schematic diagram of the structure of the detection mechanism of the present invention;

[0045] Figure 7 It is a schematic diagram of the structure of the collection box of the present invention;

[0046] Figure 8 It is a schematic diagram of the detection terminal module of the present invention.

[0047] In the figure: 1. Detection chassis; 2. Dust removal feeding mechanism; 201. Feeding trough; 202. Feeding port; 203. Rotating sealing plate; 204. Turning handle; 205. Dust suction channel; 206. Side baffle; 207. Dust suction port; 208. Plug-in filter plate; 209. Dust accumulation drawer; 210. Dust suction fan; 3. Rice outlet; 4. Diversion mechanism; 401. Socket; 402. Diversion bin; 403. Bidirectional spiral transmission shaft; 404. Diversion port; 5. Impurity screening mechanism; 501. Screen plate channel; 502. Partition; 503. First shaft pin end; 5 04, first motor; 505, support frame; 506, first belt transmission assembly; 507, flanged rotating wheel; 508, rotating drum; 6, material receiving slope; 7, collecting box; 701, impurity trough; 702, second shaft pin end; 703, rice trough; 704, rotating roller; 705, fine notch; 8, impurity cleaning port; 9, conveying mechanism; 901, base; 902, conveyor belt; 903, second motor; 904, second belt transmission assembly; 10, detection mechanism; 1001, mounting frame; 1002, detection terminal; 1003, imaging acquisition camera. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In order to solve the technical problems that dust and impurities in rice will have a great impact on the rice quality test results, and the automatic sliding sieving may lead to slow sieving efficiency when sieving rice, so that some rice and impurities are discharged together, and rice often accumulates when testing rice, affecting the image acquisition effect, please refer to Figure 1-8 , the present invention provides the following technical solutions:

[0050] A rice quality detection device comprises a detection chassis 1, a dust removal and feeding mechanism 2 is arranged on the top of the detection chassis 1, a diversion mechanism 4 is connected to the bottom of the dust removal and feeding mechanism 2, the diversion mechanism 4 is arranged inside the detection chassis 1, an impurity screening mechanism 5 is arranged below the diversion mechanism 4, a material receiving slope 6 is arranged below the impurity screening mechanism 5, a collecting box 7 is connected to one side of the material receiving slope 6, a conveying mechanism 9 is arranged below the collecting box 7, a detection mechanism 10 is arranged above the conveying mechanism 9, a rice outlet 3 and an impurity cleaning port 8 are respectively opened on both sides of the detection chassis 1, the rice outlet 3 is arranged at the conveying tail end of the conveying mechanism 9, and the impurity cleaning port 8 is opened on one side of the collecting box 7.

[0051] In the above embodiment, when the quality of rice is inspected, the rice is put into the detection chassis 1 by the dust removal feeding mechanism 2. During the falling process of the rice, the dust removal feeding mechanism 2 absorbs the dust floating in the rice, and then the rice enters the diversion mechanism 4. The diversion mechanism 4 evenly diverts the rice and introduces it into the impurity screening mechanism 5. The impurity screening mechanism 5 continuously shakes to screen the rice. The screened rice falls into the receiving slope 6 and slides into the collecting box 7. The collecting box 7 puts the rice into the conveying mechanism 9 in batches. The conveying mechanism 9 conveys the rice. During the conveying process, the detection mechanism 10 collects and detects the image of the rice.

[0052] The dust removal feeding mechanism 2 includes a feeding trough 201 and a dust suction channel 205. The feeding trough 201 is connected to the top of the dust suction channel 205 in a bucket shape. The bottom of the dust suction channel 205 is connected to the diversion mechanism 4. A feeding port 202 is provided at the connection between the feeding trough 201 and the dust suction channel 205. The bottom of the feeding port 202 is rotatably connected to a rotating sealing plate 203. The side of the rotating sealing plate 203 is connected to a handle 204. Dust suction ports 207 are provided on both sides of the dust suction channel 205. Side baffles 206 are provided on the outside of the dust suction port 207. A pull-in filter plate 208 is provided inside the dust suction port 207. A dust drawer 209 is provided below the pull-in filter plate 208. A dust suction fan 210 is provided on the side of the pull-in filter plate 208 away from the dust suction port 207.

[0053] In the above embodiment, the dust removal feeding mechanism 2 effectively removes dust and impurities in rice particles through the dust suction channel 205 and the dust suction fan 210, which helps to reduce the impact of these impurities on the rice quality test results, thereby improving the accuracy of the test. The design of the rotating sealing plate 203 allows the user to open or close the feeding port 202 as needed, which is convenient for the feeding and stopping of rice particles. The side baffle 206 outside the dust suction port 207 can effectively prevent the rice from being sucked in during the dust suction process. The design of the plug-in filter plate 208 inside the dust suction port 207 makes cleaning and maintenance easier. The user can easily remove the plug-in filter plate 208 for cleaning. At the same time, the dust drawer 209 is also convenient for collecting and processing dust. The powerful dust suction function of the dust suction fan 210 can quickly and effectively remove dust and impurities in rice particles, thereby reducing the extension of the detection time caused by the interference of impurities.

[0054] The diversion mechanism 4 includes a receiving port 401 and a diversion bin 402. The top of the receiving port 401 is connected to the dust removal feeding mechanism 2. A bidirectional spiral conveying shaft 403 is arranged inside the diversion bin 402. The bidirectional spiral conveying shaft 403 is provided with spiral conveying plates in opposite directions from the middle to both sides. The diversion port 404 is opened below the bidirectional spiral conveying shaft 403. The diversion port 404 is opened above the impurity screening mechanism 5.

[0055] In the above embodiment, the diversion mechanism 4 realizes the effective diversion of rice particles in the diversion bin 402 through the design of the bidirectional spiral transmission shaft 403, ensuring that the rice particles flow to the next processing link evenly and orderly, thereby improving the processing efficiency of the entire detection device. Since the bidirectional spiral transmission shaft 403 is provided with spiral transmission pieces in opposite directions from the middle to both sides, this design helps to prevent the rice particles from being blocked during the transmission process, while ensuring the stability and reliability of the diversion mechanism, and improving the operating efficiency of the entire detection device. The diversion port 404 is opened below the bidirectional spiral transmission shaft 403 and is located above the impurity screening mechanism 5. This layout allows the diverted rice particles to directly enter the impurity screening mechanism 5 for further screening and processing, which helps to remove impurities in the rice particles and improve the quality of rice.

[0056] The impurity screening mechanism 5 is arranged in an inclined manner, a sieve plate channel 501 is provided on the top surface of the impurity screening mechanism 5, sieve holes are provided on the bottom surface of the sieve plate channel 501, adjacent sieve plate channels 501 are separated by partitions 502, support frames 505 are provided on both sides of the diversion bin 402, the outer side of the support frame 505 is connected to the first motor 504, the interior of the support frame 505 is provided with a first belt transmission assembly 506, the first belt transmission assembly 506 includes two pulleys and a transmission belt, the two pulleys are connected by a transmission belt, and the rotating shafts of the two pulleys can be rotatably connected to On the inner side of the support frame 505, the two ends of the central rotating shaft of one of the pulleys are respectively connected to the output shaft of the first motor 504 and the central rotating shaft of the bidirectional spiral transmission shaft 403, and the central rotating shaft of the other pulley is connected to a convex wheel 507, and a semicircular protrusion is provided at the edge of the convex wheel 507. Both sides of the impurity screening mechanism 5 are fixedly connected with a rotating drum 508, and the rotating drum 508 is sleeved on the outside of the convex wheel 507. Both sides of the impurity screening mechanism 5 away from the diversion mechanism 4 are provided with a first shaft pin end 503, and the impurity screening mechanism 5 is connected to the collecting box 7 through the first shaft pin end 503.

[0057] In the above embodiment, the rice is evenly diverted and introduced into the sieve plate channel 501, and the first motor 504 drives the first belt drive assembly 506 to work, thereby driving the bidirectional spiral transmission shaft 403 and the convex edge wheel 507 to rotate at the same time. When the convex edge wheel 507 rotates, due to the semicircular protrusion design on its edge, it can drive the rotating drum 508 to be regularly shaken, thereby driving the impurity screening mechanism 5 to continuously shake and screen the rice. The screened rice falls into the material receiving slope 6 and slides into the rice trough 703, and the larger impurities remaining on the impurity screening mechanism 5 slide into the impurity trough 701.

[0058] In the above embodiment, by the inclined impurity screening mechanism 5, combined with the design of the sieve plate channel 501, the rice can flow to the sieve holes more naturally under the action of gravity, so as to be screened. The first belt drive assembly 506 is driven by the first motor 504 to work, and the bidirectional spiral transmission shaft 403 and the convex edge wheel 507 can be driven to rotate at the same time, thereby achieving uniform diversion of rice and continuous shaking of the impurity screening mechanism 5. The design of the convex edge wheel 507 allows the rotating drum 508 to be regularly lifted, thereby driving the impurity screening mechanism 5 to continuously shake. This shaking can effectively screen the rice from the sieve holes and prevent the passage of larger impurities.

[0059] An impurity trough 701 and a rice trough 703 are provided inside the collecting box 7. A second shaft pin end 702 is provided on the top of the impurity trough 701. The impurity trough 701 is connected to the impurity screening mechanism 5 through the second shaft pin end 702. The bottom of the impurity trough 701 is connected to the impurity cleaning port 8. The top of the rice trough 703 is connected to the material receiving slope 6. A roller 704 is rotatably provided at the bottom of the rice trough 703. A fine notch 705 is provided on the outer side of the roller 704. A second belt transmission assembly 904 is connected to the rotating shaft of the roller 704. The roller 704 is transmission-connected to the conveying mechanism 9 through the second belt transmission assembly 904.

[0060] The conveying mechanism 9 includes a base 901 and a conveyor belt 902 . The conveyor belt 902 is provided with a strip-shaped transverse groove. A second motor 903 is arranged on one side of the base 901 . The central shaft of the second motor 903 is connected to the roller 704 through a second belt transmission assembly 904 .

[0061] In the above embodiment, when the second motor 903 drives the second belt drive assembly 904 to rotate, it can directly drive the roller 704 to rotate. When the roller 704 rotates, the rice in the rice trough 703 will enter the inside of the fine slot 705, and will be put into the conveying mechanism 9 along with the flipping of the roller 704, thereby realizing the transmission of small amounts of rice in batches, so that the detection mechanism 10 can perform more accurate rice grain image acquisition.

[0062] In the above embodiment, the rotation of the roller 704 and the design of the rice trough 703 realize the transmission of small amounts of rice in batches, avoiding a large amount of rice being transmitted to the detection mechanism 10 at one time, resulting in inaccurate or overlapping image acquisition. The transmission of small amounts in batches is conducive to the detection mechanism 10 to more accurately collect the image of each grain of rice, thereby improving the accuracy of detection. The design of the roller 704 allows the speed and amount of rice transmission to be adjusted as needed. By adjusting the speed of the second motor 903 and the transmission ratio of the second belt drive assembly 904, the transmission speed and amount of rice can be accurately controlled to meet different detection requirements. Through the design of the strip-shaped transverse grooves on the surface of the conveyor belt 902, the rice can stay and be transmitted on the conveying mechanism 9 more stably and orderly, avoiding scattering and confusion during the transmission process.

[0063] A flow sensor 1, disposed at the dust suction port 207, for detecting the air flow passing through the dust suction port 207;

[0064] A second flow sensor is provided on the dust suction fan 210 and is used to detect the air flow of the dust suction fan 210;

[0065] A particle sensor 1, disposed on the pumping filter plate 208, for detecting the concentration of particles passing through the pumping filter plate 208;

[0066] A second particle sensor, disposed on the side baffle 200, for detecting the concentration of particles passing therethrough;

[0067] A controller and an alarm are arranged on the detection chassis 1, and the controller is electrically connected to the flow sensor 1, the flow sensor 2, the particle sensor 1, the particle sensor 2 and the alarm;

[0068] The controller controls the alarm to work based on the flow sensor 1, the flow sensor 2, the particle sensor 1, and the particle sensor 2, including the following steps:

[0069] Step 1: Calculate the clogging state index of the plug-in filter plate 208 according to formula (I) and the detection values ​​of the flow sensor 1, flow sensor 2, particle sensor 1, and particle sensor 2:

[0070]

[0071] Wherein, X is the clogging state index of the pluggable filter plate 208, V1 is the detection value of the flow sensor 1, V2 is the detection value of the flow sensor 2, ρ1 is the detection value of the particle sensor 1, ρ2 is the detection value of the particle sensor 2, R1 is the filter hole radius of the pluggable filter plate 208, R2 is the radius of the dust suction port 207, S1 is the cross-sectional area of ​​the dust suction port 207, L1 is the mean free path of the gas molecules in the dust removal feeding mechanism 2, L2 is the characteristic length of the feed trough 201, θ1 is the inclination angle of the inclined surface at the entrance of the feed trough 201, θ2 is the inclination angle of the dust suction port 207, is the maximum inclination angle of the air passing through the side baffle 206 during the suction of the dust suction fan 219, C is the Knudsen number of the air in the dust removal feeding mechanism 2, Re is the Reynolds number of the air in the dust removal feeding mechanism 2, Pr is the Prandtl number of the air in the dust removal feeding mechanism 2, ln is a logarithmic function, and e is a natural constant, which is 2.72;

[0072] Step 2: The controller compares the blockage state index of the pluggable filter plate 208 with a preset blockage state index. When the blockage state index of the pluggable filter plate 208 is greater than the preset blockage state index, the controller controls the alarm to issue an alarm prompt.

[0073] In the above embodiment, by setting a flow sensor and a particle sensor, the air flow of the dust suction port and the dust suction fan and the particle concentration at the plug-in filter plate and the side baffle can be monitored in real time. These data provide a basis for the subsequent judgment of the filter plate blockage state. The controller calculates the plug-in filter plate blockage state index based on the sensor data using formula (1). This index can reflect the blockage of the filter plate, which helps to timely discover and deal with the blockage problem and ensure the normal operation of the equipment. When the controller detects that the plug-in filter plate blockage state index exceeds the preset value, it will automatically trigger the alarm and issue an alarm prompt. This function can remind the staff to perform maintenance in time to prevent equipment failure or reduced work efficiency due to filter plate blockage.

[0074] Through the above system, automatic monitoring and alarm of the filter plate blockage status can be achieved, reducing the need for manual regular inspections, improving equipment maintenance efficiency, reducing maintenance costs, and timely detecting and handling filter plate blockage problems, which helps to extend the service life of the equipment and ensure its long-term stable operation.

[0075] In summary, this embodiment can effectively improve the operating efficiency and maintenance management level of the equipment by utilizing the flow sensor, the particle sensor and the automatic monitoring and alarm functions of the controller, and has significant practical application value.

[0076] The detection mechanism 10 includes a mounting frame 1001, one side of the mounting frame 1001 is fixedly connected to the inside of the detection chassis 1, a detection terminal 1002 is arranged on the top of the mounting frame 1001, and an imaging acquisition camera 1003 is arranged on the bottom of the mounting frame 1001, the lens of the imaging acquisition camera 1003 is facing the conveying mechanism 9, and the imaging acquisition camera 1003 is electrically connected to the detection terminal 1002.

[0077] The detection terminal 1002 includes:

[0078] An image acquisition module, used to capture the image of rice grains on the conveying mechanism 9 in real time through an imaging acquisition camera 1003, and transmit the image data to the image processing module in frames;

[0079] An image processing module is used to pre-process the collected rice grain image and binarize the rice grain image by threshold segmentation;

[0080] A feature extraction module is used to extract key features of rice grains from the processed image, wherein the key features include shape contour, size, and texture, extract the shape contour of the rice grains by edge detection, calculate shape parameters of the rice grains according to the contour information, wherein the shape parameters include roundness and aspect ratio, and extract texture features of the rice grains based on texture analysis;

[0081] A quality assessment module is used to assess the integrity of rice grains based on the extracted key features and the rice grain integrity assessment model, obtain the integrity assessment results of the rice grains, classify the rice quality according to the assessment results, and generate corresponding quality test results;

[0082] The result output module is used to output the quality inspection results of the quality assessment module in a visual form and save the results to the database and file system.

[0083] In the above embodiment, the rice grain image is accurately processed and analyzed by the image processing module and the feature extraction module, and the key features of the rice grain, including shape profile, size and texture, etc., can be accurately extracted, ensuring the high precision and accuracy of quality detection. The image acquisition module can capture the rice grain image on the transmission mechanism in real time, and process and analyze it immediately, so that the detection process has real-time performance, and can timely discover and deal with quality problems, improve production efficiency and product quality. The entire detection process is automated without manual intervention, which reduces labor costs, improves the efficiency and consistency of detection, and reduces the impact of human factors on the detection results. By comprehensively evaluating the quality of multiple key features, the quality status of the rice grains can be more comprehensively reflected, which helps to discover potential quality problems and improve the level of product quality control.

[0084] In order to better demonstrate the rice quality detection device, this embodiment now proposes a detection method of the rice quality detection device, comprising the following steps:

[0085] Step 1: The rice is put into the detection chassis 1 through the dust removal feeding mechanism 2. During the falling process of the rice, the dust removal feeding mechanism 2 absorbs the dust floating in the rice, and then the rice enters the diversion mechanism 4;

[0086] Step 2: The diversion mechanism 4 evenly diverts the rice and introduces it into the impurity screening mechanism 5. The impurity screening mechanism 5 continuously shakes to screen the rice. The screened rice falls into the receiving slope 6 and slides into the collection box 7.

[0087] Step 3: The collection box 7 puts the rice into the conveying mechanism 9 in batches, and the conveying mechanism 9 conveys the rice. During the conveying process, the detection mechanism 10 collects and detects the image of the rice;

[0088] Step 4: Preprocess and binarize the collected rice grain images, extract the key features of the rice grains from the processed images, evaluate the integrity of the rice grains based on the extracted key features and the rice grain integrity assessment model, and output the quality inspection results of the quality assessment module in a visual form.

[0089] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rice quality detection device, comprising a detection chassis (1), characterized in that: The top of the detection box (1) is provided with a dust removal feeding mechanism (2), the bottom of the dust removal feeding mechanism (2) is connected with a diversion mechanism (4), the diversion mechanism (4) is arranged inside the detection box (1), an impurity screening mechanism (5) is arranged below the diversion mechanism (4), a material receiving slope (6) is arranged below the impurity screening mechanism (5), one side of the material receiving slope (6) is connected with a collection box (7), a conveying mechanism (9) is arranged below the collection box (7), a detection mechanism (10) is arranged above the conveying mechanism (9), and a rice outlet (3) and an impurity cleaning port (8) are respectively opened on both sides of the detection box (1), the rice outlet (3) is arranged at the conveying tail end of the conveying mechanism (9), and the impurity cleaning port (8) is opened on one side of the collection box (7).

2. A rice quality detection device as claimed in claim 1, characterized in that: The dust removal feeding mechanism (2) comprises a feeding trough (201) and a dust suction channel (205); the feeding trough (201) is connected to the top of the dust suction channel (205) in a bucket shape; the bottom of the dust suction channel (205) is connected to the diversion mechanism (4); a feeding port (202) is provided at the connection between the feeding trough (201) and the dust suction channel (205); the bottom of the feeding port (202) is rotatably connected to a rotating sealing plate (203); the rotating sealing plate (203) A handle (204) is connected to the side of the dust suction channel (205), dust suction ports (207) are provided on both sides of the dust suction channel (205), a side baffle (206) is provided outside the dust suction port (207), a pull-in filter plate (208) is provided inside the dust suction port (207), a dust collection drawer (209) is provided below the pull-in filter plate (208), and a dust suction fan (210) is provided on the side of the pull-in filter plate (208) away from the dust suction port (207).

3. A rice quality detection device as claimed in claim 1, characterized in that: The diversion mechanism (4) comprises a receiving interface (401) and a diversion chamber (402), the top of the receiving interface (401) is connected to the dust removal feeding mechanism (2), a bidirectional spiral conveying shaft (403) is arranged inside the diversion chamber (402), and the bidirectional spiral conveying shaft (403) is provided with spiral conveying plates in opposite directions from the middle to both sides, the diversion port (404) is opened below the bidirectional spiral conveying shaft (403), and the diversion port (404) is opened above the impurity screening mechanism (5).

4. A rice quality detection device as claimed in claim 3, characterized in that: The impurity screening mechanism (5) is arranged in an inclined manner, a sieve plate channel (501) is provided on the top surface of the impurity screening mechanism (5), sieve holes are provided on the bottom surface of the sieve plate channel (501), adjacent sieve plate channels (501) are separated by partitions (502), support frames (505) are provided on both sides of the diversion bin (402), the outer side of the support frame (505) is connected to a first motor (504), the interior of the support frame (505) is provided with a first belt transmission assembly (506), the first belt transmission assembly (506) comprises two pulleys and a transmission belt, the two pulleys are connected by a transmission belt, and the rotating shafts of the two pulleys can be rotatably connected to the support frame (505). On the inner side of the support frame (505), the two ends of the central rotating shaft of one of the pulleys are respectively connected to the output shaft of the first motor (504) and the central rotating shaft of the bidirectional spiral transmission shaft (403), and the central rotating shaft of the other pulley is connected to a convex rotating wheel (507), and a semicircular protrusion is arranged at the edge of the convex rotating wheel (507). The impurity screening mechanism (5) is fixedly connected to a rotating drum (508) on both sides, and the rotating drum (508) is sleeved on the outside of the convex rotating wheel (507). The impurity screening mechanism (5) is provided with a first shaft pin end (503) on both sides of one end away from the diversion mechanism (4), and the impurity screening mechanism (5) is connected to the collection box (7) through the first shaft pin end (503).

5. A rice quality detection device as claimed in claim 4, characterized in that: The collecting box (7) is provided with an impurity trough (701) and a rice trough (703) inside. A second shaft pin end (702) is provided at the top of the impurity trough (701). The impurity trough (701) is connected to the impurity screening mechanism (5) through the second shaft pin end (702). The bottom of the impurity trough (701) is connected to the impurity cleaning port (8). The top of the rice trough (703) is connected to the material receiving slope (6). A roller (704) is rotatably provided at the bottom of the rice trough (703). A fine notch (705) is provided on the outer side of the roller (704). A second belt transmission assembly (904) is connected to the central rotating shaft of the roller (704). The roller (704) is transmission-connected to the transmission mechanism (9) through the second belt transmission assembly (904).

6. A rice quality detection device as claimed in claim 5, characterized in that: The conveying mechanism (9) comprises a base (901) and a conveyor belt (902), wherein the conveyor belt (902) is provided with a strip-shaped transverse groove, and a second motor (903) is arranged on one side of the base (901), and the central rotating shaft of the second motor (903) is connected to the rotating roller (704) through a second belt transmission assembly (904).

7. A rice quality detection device as claimed in claim 1, characterized in that: The detection mechanism (10) comprises a mounting frame (1001), one side of the mounting frame (1001) is fixedly connected to the inside of the detection chassis (1), a detection terminal (1002) is arranged on the top of the mounting frame (1001), and an imaging acquisition camera (1003) is arranged on the bottom of the mounting frame (1001), the lens of the imaging acquisition camera (1003) faces the transmission mechanism (9), and the imaging acquisition camera (1003) is electrically connected to the detection terminal (1002).

8. A rice quality detection device as claimed in claim 7, characterized in that: The detection terminal (1002) comprises: An image acquisition module, used for capturing images of rice grains on the conveying mechanism (9) in real time through an imaging acquisition camera (1003), and transmitting image data in frames to an image processing module; An image processing module is used to pre-process the collected rice grain image and binarize the rice grain image by threshold segmentation; A feature extraction module is used to extract key features of rice grains from the processed image, wherein the key features include shape contour, size, and texture, extract the shape contour of the rice grains by edge detection, calculate shape parameters of the rice grains according to the contour information, wherein the shape parameters include roundness and aspect ratio, and extract texture features of the rice grains based on texture analysis; A quality assessment module is used to assess the integrity of rice grains based on the extracted key features and the rice grain integrity assessment model, obtain the integrity assessment results of the rice grains, classify the rice quality according to the assessment results, and generate corresponding quality test results; The result output module is used to output the quality inspection results of the quality assessment module in a visual form and save the results to the database and file system.

9. A rice quality detection device as claimed in claim 2, characterized in that: A flow sensor 1, arranged at the dust suction port (207), and used for detecting the air flow passing through the dust suction port (207); A second flow sensor, arranged on the dust suction fan (210), and used for detecting the air flow of the dust suction fan (210); a particle sensor 1, arranged on the pumping filter plate (208), and used for detecting the concentration of particles passing through the pumping filter plate (208); a second particle sensor, arranged on the side baffle (200) and used for detecting the concentration of particles passing therethrough; A controller and an alarm are arranged on the detection chassis (1), and the controller is electrically connected to the flow sensor 1, the flow sensor 2, the particle sensor 1, the particle sensor 2 and the alarm; The controller controls the alarm to work based on the flow sensor 1, the flow sensor 2, the particle sensor 1, and the particle sensor 2, including the following steps: Step 1: Calculate the clogging state index of the pluggable filter plate (208) according to formula (1) and the detection values ​​of the flow sensor 1, the flow sensor 2, the particle sensor 1, and the particle sensor 2: Wherein, X is the clogging state index of the pluggable filter plate (208), V1 is the detection value of the flow sensor 1, V2 is the detection value of the flow sensor 2, ρ1 is the detection value of the particle sensor 1, ρ2 is the detection value of the particle sensor 2, R1 is the filter hole radius of the pluggable filter plate (208), R2 is the radius of the dust suction port (207), S1 is the cross-sectional area of ​​the dust suction port (207), L1 is the mean free path of gas molecules in the dust removal feeding mechanism (2), L2 is the characteristic length of the feeding trough (201), θ1 is the inclination angle of the inclined surface at the entrance of the feeding trough (201), θ2 is the inclination angle of the dust suction port (207), is the maximum inclination angle of the air passing through the side baffle (206) during the suction of the dust suction fan (219), C is the Knudsen number of the air in the dust removal feeding mechanism (2), Re is the Reynolds number of the air in the dust removal feeding mechanism (2), Pr is the Prandtl number of the air in the dust removal feeding mechanism (2), ln is a logarithmic function, and e is a natural constant, the value of which is 2.72; Step 2: the controller compares the blockage state index of the pluggable filter plate (208) with a preset blockage state index, and when the blockage state index of the pluggable filter plate (208) is greater than the preset blockage state index, the controller controls the alarm to issue an alarm prompt.

10. A detection method for a rice quality detection device according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: The rice is put into the detection cabinet (1) through the dust removal feeding mechanism (2). During the falling process of the rice, the dust removal feeding mechanism (2) absorbs the dust floating in the rice, and then the rice enters the diversion mechanism (4); Step 2: The diversion mechanism (4) evenly diverts the rice and introduces it into the impurity screening mechanism (5), the impurity screening mechanism (5) continuously shakes to screen the rice, and the screened rice falls into the receiving slope (6) and slides into the collection box (7); Step 3: The collection box (7) puts the rice into the conveying mechanism (9) in batches, and the conveying mechanism (9) conveys the rice. During the conveying process, the detection mechanism (10) collects and detects images of the rice; Step 4: Preprocess and binarize the collected rice grain images, extract the key features of the rice grains from the processed images, evaluate the integrity of the rice grains based on the extracted key features and the rice grain integrity assessment model, and output the quality inspection results of the quality assessment module in a visual form.

Images