A device for monitoring the content of foreign matter and the breakage rate of a cereal

Abstract

This invention discloses a device for monitoring the impurity content and breakage rate of grains. The monitoring device includes: a control module that sends an inlet opening signal to a feeding motor to control the grain feeding device to open; a sensor module that detects in real time whether the grains have reached a preset quantitative position, and sends quantitative position arrival information to the control module when the grains reach the preset quantitative position; the control module that, based on the quantitative position arrival information, sends an inlet closing signal to the feeding motor and sends image acquisition information to an image acquisition module; the image acquisition module that takes pictures of the grain stack and transmits the grain stack pictures to the control module; and the control module that determines the impurity content and breakage rate of the grains based on the grain stack pictures, and simultaneously sends an outlet opening signal to the discharge motor. This invention achieves unobstructed dynamic sampling of high-speed grain flow while maintaining the natural stacking state of the grains, improving the stability and reliability of the detection.

Description

Technical Field

[0001] This invention relates to the field of impurity detection technology, and in particular to a device for monitoring the impurity content and breakage rate of grains. Background Technology

[0002] Grain impurity content and breakage rate are two key indicators for optimizing combine harvester operating parameters to ensure harvest quality. Accurate monitoring of these parameters is crucial for controlling harvester performance. However, currently, the detection of impurity content and breakage rate during field harvesting still heavily relies on time-consuming and labor-intensive manual methods. This prevents drivers from obtaining real-time and accurate data on impurity content and breakage rate, hindering timely adjustments to key operating parameters such as threshing and cleaning, thus restricting operational efficiency and grain quality.

[0003] In existing technologies, single-layer sampling devices are often used, which are prone to detection interruption due to blockage by straw and impurities, resulting in insufficient stability and reliability. Summary of the Invention

[0004] This invention provides a device for monitoring the impurity and breakage rate of grains, which maintains the natural stacking state of grains while achieving unobstructed dynamic sampling of high-speed grain flow, thereby improving the stability and reliability of detection.

[0005] According to one aspect of the present invention, a device for monitoring the impurity content and breakage rate of grains is provided, the device comprising: Grain collection module, image acquisition module, sensor module, and control module; The grain collection module includes: a grain sampling trough, a grain feeding device, a grain discharging device, a feeding motor, and a discharging motor; the grain sampling trough is located at one end of the impurity and breakage rate monitoring device; the grain feeding device is located at the grain inlet of the grain sampling trough and is electrically connected to the feeding motor; the grain discharging device is located at the grain outlet of the grain sampling trough and is electrically connected to the discharging motor; the control module is electrically connected to the feeding motor, the discharging motor, the sensor module, and the image acquisition module. The control module is used to send the feed inlet opening information to the feed motor, so as to control the grain feeding device to open through the feed motor, so that the grain can be naturally stacked in the grain sampling trough. The sensor module is used to detect in real time whether the grain has reached the preset quantitative position, and when the grain reaches the preset quantitative position, it sends quantitative position arrival information to the control module; The control module is used to send a feed inlet closing signal to the feed motor based on the quantitative position arrival information, so as to control the grain feeding device to close through the feed motor, and send image acquisition information to the image acquisition module; The image acquisition module is used to acquire information from images, take pictures of the grain stacks, and transmit the grain stack pictures to the control module; The control module is used to determine the impurity and breakage rate of the grains based on the grain stack image, and at the same time send a discharge port opening signal to the discharge motor so that the discharge motor controls the grain discharge device to open and discharge the grains.

[0006] Furthermore, the image acquisition module includes a transparent material observation plate, a supplementary lighting device, and an image acquisition device; A transparent material observation plate is embedded in the first side wall of the grain sampling trough; an image acquisition device and a supplementary lighting device are set on the side of the transparent material observation plate away from the grain sampling trough; wherein, the first side wall is the side wall adjacent to the grain feeding device and the grain discharging device. The supplementary lighting device and image acquisition device are connected to the control module; The control module sends image acquisition information to the image acquisition device and supplementary lighting information to the supplementary lighting device when it receives quantitative location arrival information; the supplementary lighting device starts working according to the supplementary lighting information; the image acquisition device takes pictures of the grain stack through the transparent material observation plate according to the image acquisition information and transmits the grain stack pictures to the control module.

[0007] Furthermore, the image acquisition device includes: Lens and industrial camera; lens mounted on industrial camera; industrial camera connected to control module; The industrial camera is used to acquire information based on the images sent by the control module, take pictures of the grain stacks, and transmit the grain stack pictures to the control module.

[0008] Furthermore, the control module is used for: Before sending the feed inlet opening information to the feed motor, fault detection is performed on the feed motor and the discharge motor, and the working status of the feed motor is controlled according to the detection results.

[0009] Furthermore, the supplemental lighting device includes at least one light-emitting diode.

[0010] Furthermore, the control module is also used for: After a first preset time after sending the discharge port open signal to the discharge motor, a discharge port close signal is sent to the discharge motor, and at the same time, a feed port open signal is sent to the feed motor.

[0011] Furthermore, the grain impurity and breakage monitoring device also includes: Mounting bracket; The mounting bracket is positioned on the side of the grain feeding device away from the grain sampling trough.

[0012] Furthermore, the grain impurity and breakage monitoring device also includes: Display module; The control module and the display module are electrically connected; The control module transmits the determined impurity and breakage rates of the grain to the display module in real time. The display module displays the impurity and breakage rates of the grain in real time, compares the impurity and breakage rates with preset thresholds, and performs quality assessment based on the comparison results.

[0013] Furthermore, the grain impurity and breakage monitoring device also includes: Communication module; The first end of the communication module is electrically connected to the control module, and the second end of the communication module is electrically connected to the display module. The communication module is used to transmit the impurity rate and breakage rate of the grain determined by the control module to the display module in real time.

[0014] Furthermore, the grain impurity and breakage monitoring device also includes: Power management module; The power management module is electrically connected to the grain collection module, image acquisition module, sensor module, and control module, and is used to supply power to the grain collection module, image acquisition module, sensor module, and control module.

[0015] The impurity and breakage rate monitoring device provided in this invention sends an inlet opening signal to the feeding motor via a control module. This controls the opening of the grain feeding device, allowing the grain to naturally stack in the grain sampling trough. A sensor module continuously monitors whether the grain has reached a preset quantitative position. When the grain reaches this position, the sensor module sends quantitative position arrival information to the control module. Based on this information, the control module sends an inlet closing signal to the feeding motor, closing the grain feeding device. Simultaneously, it sends image acquisition information to an image acquisition module. The image acquisition module captures images of the grain stack and transmits these images to the control module, which uses them to determine the impurity and breakage rates. At the same time, it sends an outlet opening signal to the discharge motor, opening the grain discharge device to discharge the grain. This achieves automatic detection of the impurity and breakage rates of the grain. The simultaneous setup of a grain sampling trough, a grain feeding device, and a grain discharge device maintains the natural stacking of the grain while enabling unobstructed dynamic sampling of the high-speed grain flow.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a grain impurity and breakage rate monitoring device provided according to an embodiment of the present invention; Figure 2 This is a front view of a cross-sectional view of a grain impurity and breakage rate monitoring device provided according to an embodiment of the present invention; Figure 3 This is a cross-sectional side view schematic diagram of a grain impurity and breakage rate monitoring device provided according to an embodiment of the present invention; Figure 4 This is a top cross-sectional view of a grain impurity and breakage monitoring device provided according to an embodiment of the present invention; Figure 5 This is a schematic diagram of another grain impurity and breakage rate monitoring device provided according to an embodiment of the present invention; Figure 6 This is a schematic diagram of another grain impurity and breakage monitoring device provided according to an embodiment of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] This invention provides a device for monitoring the impurity content and breakage rate of grains. Figure 1 This is a schematic diagram of a grain impurity and breakage monitoring device according to an embodiment of the present invention. Figure 2 This is a front cross-sectional view of a grain impurity and breakage monitoring device according to an embodiment of the present invention. Figure 3 This is a cross-sectional side view schematic diagram of a grain impurity and breakage rate monitoring device provided according to an embodiment of the present invention. Figure 4 This is a top cross-sectional view of a grain impurity and breakage monitoring device according to an embodiment of the present invention. Figures 1-4 The monitoring device includes: Grain collection module 1, image acquisition module 2, sensor module 3, and control module 4; The grain collection module 1 includes: a grain sampling trough 11, a grain feeding device 12, a grain discharging device 13, a feeding motor 14, and a discharging motor 15; the grain sampling trough 11 is located at one end of the impurity and breakage rate monitoring device; the grain feeding device 12 is located at the grain inlet 16 of the grain sampling trough 11, and the grain feeding device 12 is electrically connected to the feeding motor 14; the grain discharging device 13 is located at the grain outlet 17 of the grain sampling trough 11, and the grain discharging device 13 is electrically connected to the discharging motor 15; the control module 4 is electrically connected to the feeding motor 14, the discharging motor 15, the sensor module 3, and the image acquisition module 2. The control module 4 is used to send the feed inlet opening information to the feed motor 14 so as to control the grain feeding device 12 to open through the feed motor 14 so that the grains can be naturally stacked in the grain sampling trough 11. Sensor module 3 is used to detect in real time whether the grain has reached the preset quantitative position, and when the grain reaches the preset quantitative position, it sends quantitative position arrival information to control module 4; The control module 4 is used to send a feed inlet closing signal to the feed motor 14 based on the quantitative position arrival information, so as to control the grain feeding device 12 to close through the feed motor 14, and send image acquisition information to the image acquisition module 2; Image acquisition module 2 is used to acquire information based on images, take pictures of the grain stacks, and transmit the grain stack pictures to control module 4; The control module 4 is used to determine the impurity rate and breakage rate of the grain based on the grain stack image, and at the same time send a discharge port opening signal to the discharge motor 15 so that the grain discharge device 13 can be opened through the discharge motor 15 to discharge the grain.

[0022] To further improve the applicability of the impurity and breakage rate monitoring device, the grain sampling trough 11 was structurally optimized to reduce its size, addressing potential blockages during wheat conveying. The control module 4, based on an embedded processor, integrates a dedicated neural network acceleration unit to perform real-time calculations of complex algorithm models, i.e., real-time calculations of impurity and breakage rates. The sensor module 3 may include a feed valve opening sensor corresponding to the grain feeding device 12 and a discharge valve opening sensor corresponding to the grain discharging device 13. These sensors acquire real-time feed and discharge valve opening information and transmit it to the control module 4, enabling precise control of the feed valve opening of the grain feeding device 12 and the discharge valve opening of the grain discharging device 13 through the control module 4.

[0023] Specifically, when it is necessary to monitor the impurity and breakage rates of the grain being transported by the combine harvester, the impurity and breakage rate monitoring device is activated to ensure its normal operation. When the material flows through the feed inlet, the sensor module 3 is triggered to send material arrival information to the control module 4. At this time, the control module 4 sends a feed inlet opening signal to the feed motor 14, which controls the grain feeding device 12 to open, allowing the grain being transported by the combine harvester to naturally stack in the grain sampling trough 11. Simultaneously, the control sensor module 3 continuously monitors whether the grain has reached the preset quantitative position, which can be set according to actual conditions. When it detects that the naturally stacked grain has reached the preset quantitative position, it sends quantitative position arrival information to the control module 4. After receiving the quantitative position arrival information from the sensor module 3, the control module 4 sends a feed inlet closing signal to the feed motor 14, which controls the grain feeding device 12 to close, preventing excessive naturally stacked grain from causing blockage. After the grain feeding device 12 is closed by controlling the feeding motor 14, image acquisition information is sent to the image acquisition module 2 to control the image acquisition module 2 to capture an image of the grain stack and transmit the image back to the control module 4. The control module 4 then calculates the impurity rate and breakage rate of the grain based on the grain stack image and simultaneously sends a discharge port opening signal to the discharge motor 15 to control the grain discharge device 13 to open and discharge the stacked grain. After a first preset time period of discharging the stacked grain, the control module 4 continues to send a feed port opening signal to the feeding motor 14 to control the grain feeding device 12 to open and begin the next sampling cycle, thereby achieving real-time updates of the impurity rate and breakage rate.

[0024] After receiving an image of the grain stack, control module 4 uses a deep learning-based detection model. This model employs a multi-task learning architecture to simultaneously identify impurities and broken grains. The detection model reduces computational redundancy through feature optimization, enhances feature extraction of small targets using an attention mechanism, and improves the accuracy of stacked material recognition by combining multi-scale feature fusion technology. To address the occlusion problem of materials in their natural state, a spatial context modeling method is used to enhance the representation of local features. Furthermore, the detection model output undergoes temporal filtering to eliminate random errors in single-frame detection and improve the stability of the detection results. After identifying impurities and broken grains, a dynamic compensation algorithm is used to adaptively adjust detection parameters based on material flow characteristics, establishing an accurate quantity-content mapping relationship to achieve precise calculation of the impurity and breakage rates of the grains. The system also possesses a self-learning function, capable of optimizing model parameters based on historical detection data to continuously improve detection accuracy.

[0025] The impurity and breakage rate monitoring device provided in this embodiment of the invention sends an inlet opening signal to the feeding motor 14 via the control module 4, so that the feeding motor 14 controls the grain feeding device 12 to open, allowing the grain to naturally stack in the grain sampling trough 11. The sensor module 3 detects in real time whether the grain has reached the preset quantitative position, and when the grain reaches the preset quantitative position, it sends quantitative position arrival information to the control module 4. The control module 4 sends an inlet closing signal to the feeding motor 14 based on the quantitative position arrival information, so that the feeding motor 14 controls the grain feeding device 12 to close, and sends image acquisition information to the image acquisition module 2. The image acquisition module 2 takes a picture of the grain stack based on the image acquisition information and transmits the grain stack picture to the control module, so that the control module 4 can determine the impurity and breakage rate of the grain based on the grain stack picture, and at the same time sends an outlet opening signal to the discharge motor 15, so that the discharge motor 15 controls the grain discharge device 13 to open and discharge the grain, thus realizing the automatic detection of the impurity and breakage rate of the grain. Simultaneously, a grain sampling trough 11, a grain feeding device 12, and a grain discharging device 13 are set up. While maintaining the natural stacking state of the grain, non-blocking dynamic sampling of high-speed grain flow is achieved, which improves the stability and reliability of the detection.

[0026] Further reference Figures 1-4 The image acquisition module includes a transparent material observation plate 21, a supplementary lighting device 22, and an image acquisition device 23; A transparent material observation plate 21 is embedded in the first side wall of the grain sampling trough 11; an image acquisition device 23 and a supplementary lighting device 22 are disposed on the side of the transparent material observation plate 21 away from the grain sampling trough 11; wherein, the first side wall is the side wall adjacent to the grain feeding device 12 and the grain discharging device 13. The supplementary lighting device 22 and the image acquisition device 23 are connected to the control module 4; When the control module 4 receives the quantitative location arrival information, it sends image acquisition information to the image acquisition device 23 and supplementary lighting information to the supplementary lighting device 22; the supplementary lighting device 22 is used to start working according to the supplementary lighting information; the image acquisition device 23 is used to capture an image of the grain stack presented through the transparent material observation plate 21 according to the image acquisition information, and transmit the grain stack image to the control module 4.

[0027] Specifically, when the control module 4 receives the quantitative position arrival information, it sends supplementary lighting information to the supplementary lighting device 22 to illuminate the sealed acquisition cavity, and sends image acquisition information to the image acquisition device 23 so that the image acquisition device 23 can clearly capture images of the grain stack in the grain sampling trough 11 through the transparent material observation plate 21. Both the supplementary lighting device 22 and the image acquisition device 23 are located within the sealed acquisition cavity. The supplementary lighting device 22 can be arranged on the inner wall of the sealed acquisition cavity, positioned between the transparent material observation plate 21 and the image acquisition device 23, to assist the image acquisition device 23 in capturing images of the grain stack. Furthermore, the image acquisition device 23 captures images of the grain stack through the transparent material observation plate 21, effectively preventing dust contamination of the lens. In addition, as the grain is discharged from the grain outlet 17, it carries away accumulated dust from the surface of the transparent material observation plate 21, creating a self-cleaning effect and helping to maintain the clarity of the grain stack image acquisition. For example, the supplementary lighting device 22 can automatically adjust its brightness according to the external light intensity, saving energy while ensuring image quality.

[0028] Further reference Figures 1-4 The image acquisition device includes: Lens 231 and industrial camera 232; lens 231 is mounted on industrial camera 232; industrial camera 232 is connected to control module 4; The industrial camera 232 is used to acquire information based on the image sent by the control module 4, take pictures of the grain stack, and transmit the grain stack pictures to the control module 4.

[0029] Specifically, by mounting lens 231 on industrial camera 232, the clarity of the images captured of the grain stack within the grain sampling trough 11 is effectively improved. For example, industrial camera 232 employs multi-frame exposure fusion technology to capture high dynamic range images, effectively suppressing the impact of sudden changes in field lighting on image quality.

[0030] Furthermore, the control module is used for: Before sending the feed inlet opening information to the feed motor, fault detection is performed on the feed motor and the discharge motor, and the working status of the feed motor is controlled according to the detection results.

[0031] Specifically, when it is necessary to monitor the impurity and breakage rate of grain conveyed by a combine harvester, the impurity and breakage rate monitoring device is activated. The device first enters an initialization state, during which the grain feeding and discharging devices are kept closed to detect any faults or abnormalities in the image acquisition module, the feeding motor, and the discharging motor. Based on the fault detection results, the device controls the operating state of the feeding motor. For example, if no faults or abnormalities are detected in the image acquisition module, the feeding motor, or the discharging motor, a feed inlet opening message is sent to the feeding motor to control the grain feeding device to open, allowing the grain to naturally stack in the grain sampling trough. If any faults or abnormalities are detected in the image acquisition module, the feeding motor, or the discharging motor, a fault alarm is triggered.

[0032] Furthermore, the supplemental lighting device includes at least one light-emitting diode.

[0033] Wherein, at least one can be understood as one or more. For example, the supplementary lighting device may include one or more light-emitting diodes, and the number of light-emitting diodes included in the supplementary lighting device can be set according to the actual situation.

[0034] Furthermore, the control module is also used for: After a first preset time after sending the discharge port open signal to the discharge motor, a discharge port close signal is sent to the discharge motor, and at the same time, a feed port open signal is sent to the feed motor.

[0035] Specifically, after sending a discharge port open signal to the discharge motor for a first preset time, a discharge port close signal is sent to the discharge motor, and simultaneously a feed port open signal is sent to the feed motor to start the next sampling cycle, thereby achieving real-time updates of impurity content and breakage rate. The first preset time can be set according to actual conditions.

[0036] Further reference Figure 3 The impurity and breakage rate monitoring device also includes: Mounting bracket 5; Mounting bracket 5 is positioned on the side of the grain feeding device 12 away from the grain sampling trough 11.

[0037] Specifically, the mounting bracket 5 can be a sleeve-type mounting bracket, which can be adapted to the grain outlet of the screw conveyor of different models of combine harvesters by adjusting the fastening structure on the mounting bracket. It can achieve quick installation without modifying the main structure of the combine harvester's screw conveyor grain outlet, and does not affect the normal operation of the main machine.

[0038] Furthermore, Figure 5 This is a schematic diagram of another grain impurity and breakage monitoring device provided according to an embodiment of the present invention, for reference. Figure 5The impurity and breakage rate monitoring device also includes: Display module 6; Control module 4 is electrically connected to display module 6; The control module 4 is used to transmit the determined impurity rate and breakage rate of the grain to the display module 6 in real time. The display module 6 is used to display the impurity rate and breakage rate of the grain in real time, compare the impurity rate and breakage rate with the preset threshold, and perform quality assessment based on the comparison results.

[0039] Specifically, after receiving the impurity rate and breakage rate of the grain transmitted by the control module 4, the display module 6 can display the changing trend of the impurity rate and breakage rate in real time, and compare the impurity rate and breakage rate of each time with their corresponding preset thresholds, and evaluate whether the impurity rate and breakage rate of the grain meet the requirements based on the comparison results.

[0040] Furthermore, Figure 6 This is a schematic diagram of another grain impurity and breakage monitoring device provided according to an embodiment of the present invention, for reference. Figure 6 The impurity and breakage rate monitoring device also includes: Communication module 7; The first end of the communication module 7 is electrically connected to the control module 4, and the second end of the communication module 7 is electrically connected to the display module 6. The communication module 7 is used to transmit the impurity rate and breakage rate of the grain determined by the control module 4 to the display module 6 in real time.

[0041] Specifically, the communication module 7 supports Gigabit Ethernet and CAN bus protocols, and can transmit information such as impurity rate and breakage rate from the control module 4 to the display module 6 to realize real-time display of the impurity rate and breakage rate calculated each time.

[0042] Furthermore, the impurity content and breakage rate monitoring device also includes: Power management module; The power management module is electrically connected to the grain collection module, image acquisition module, sensor module, and control module, and is used to supply power to the grain collection module, image acquisition module, sensor module, and control module.

[0043] Specifically, the power management module features a wide voltage input characteristic, enabling it to power the grain collection module, image acquisition module, sensor module, and control module via connection to the combine harvester's 24V onboard electrical system. The power management module also includes an independent power supply battery, allowing for power supply to these modules when onboard power is unavailable.

[0044] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0045] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A device for monitoring the impurity content and breakage rate of grains, characterized in that, include: Grain collection module, image acquisition module, sensor module, and control module; The grain collection module includes: a grain sampling trough, a grain feeding device, a grain discharging device, a feeding motor, and a discharging motor; the grain sampling trough is located at one end of the impurity and breakage rate monitoring device; the grain feeding device is located at the grain inlet of the grain sampling trough and is electrically connected to the feeding motor; the grain discharging device is located at the grain outlet of the grain sampling trough and is electrically connected to the discharging motor; the control module is electrically connected to the feeding motor, the discharging motor, the sensor module, and the image acquisition module; The control module is used to send feed port opening information to the feed motor, so as to control the grain feeding device to open through the feed motor, so that the grain can be naturally stacked in the grain sampling trough. The sensor module is used to detect in real time whether the grain has reached the preset quantitative position, and when the grain reaches the preset quantitative position, it sends quantitative position arrival information to the control module; The control module is used to send a feed inlet closing signal to the feed motor according to the quantitative position arrival information, so as to control the grain feeding device to close through the feed motor, and send image acquisition information to the image acquisition module; The image acquisition module is used to capture images of stacked grains based on the image acquisition information, and transmit the images of stacked grains to the control module. The control module is used to determine the impurity rate and breakage rate of the grains based on the grain stack image, and simultaneously send a discharge port opening signal to the discharge motor so as to control the grain discharge device to open and discharge the grains.

2. The grain impurity and breakage monitoring device according to claim 1, characterized in that, The image acquisition module includes a transparent material observation plate, a supplementary lighting device, and an image acquisition device; The transparent material observation plate is embedded in the first sidewall of the grain sampling trough; the image acquisition device and the supplementary lighting device are disposed on the side of the transparent material observation plate away from the grain sampling trough; wherein, the first sidewall is the sidewall adjacent to the grain feeding device and the grain discharging device; The supplementary lighting device and the image acquisition device are connected to the control module; The control module is used to send image acquisition information to the image acquisition device and supplementary lighting information to the supplementary lighting device when it receives the quantitative location arrival information; the supplementary lighting device is used to start working according to the supplementary lighting information; the image acquisition device is used to take a picture of the grain stack presented through the transparent material observation plate according to the image acquisition information, and transmit the grain stack picture to the control module.

3. The grain impurity and breakage monitoring device according to claim 2, characterized in that, The image acquisition device includes: A lens and an industrial camera; the lens is mounted on the industrial camera; the industrial camera is connected to the control module; The industrial camera is used to capture images of the grain stack based on the image acquisition information sent by the control module, and transmit the grain stack images to the control module.

4. The grain impurity and breakage monitoring device according to claim 1, characterized in that, The control module is used for: Before sending the feed inlet opening information to the feed motor, fault detection is performed on the feed motor and the discharge motor, and the working state of the feed motor is controlled according to the detection results.

5. The grain impurity and breakage monitoring device according to claim 2, characterized in that, The supplemental lighting device includes at least one light-emitting diode.

6. The grain impurity and breakage monitoring device according to claim 1, characterized in that, The control module is also used for: After a first preset time after sending an outlet opening signal to the outlet motor, an outlet closing signal is sent to the outlet motor, and an inlet opening signal is sent to the feed motor at the same time.

7. The grain impurity and breakage monitoring device according to claim 1, characterized in that, Also includes: Mounting bracket; The mounting bracket is located on the side of the grain feeding device away from the grain sampling trough.

8. The grain impurity and breakage monitoring device according to claim 1, characterized in that, Also includes: Display module; The control module is electrically connected to the display module; The control module is used to transmit the determined impurity rate and breakage rate of the grain to the display module in real time. The display module is used to display the impurity rate and breakage rate of the grain in real time, compare the impurity rate and breakage rate with a preset threshold, and perform quality assessment based on the comparison result.

9. The grain impurity and breakage monitoring device according to claim 8, characterized in that, Also includes: Communication module; The first end of the communication module is electrically connected to the control module, and the second end of the communication module is electrically connected to the display module; The communication module is used to transmit the impurity rate and breakage rate of the grain determined by the control module to the display module in real time.

10. The grain impurity and breakage monitoring device according to claim 1, characterized in that, Also includes: Power management module; The power management module is electrically connected to the grain collection module, the image acquisition module, the sensor module, and the control module, and is used to supply power to the grain collection module, the image acquisition module, the sensor module, and the control module.

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