A multi-sensor integrated tobacco grade determination monitoring device and method

Abstract

The application discloses a multi-sensor integrated tobacco grade determination monitoring device and method, and relates to the field of tobacco grade determination.The device comprises a conveying platform, a support arranged at the middle end of the conveying platform, and a sensor module arranged on the support.The left end of the conveying platform is provided with a supporting platform, the upper end of the supporting platform is provided with a determination and classification mechanism, and the determination and classification mechanism is used for classifying and collecting tobacco.The device and method can move the adjusting box at the upper end to a position corresponding to the collecting box when the tobacco gradually falls into the collecting box, the slide plate is no longer extruded by the abutting block in the limiting cover plate at this time, the slide plate reciprocates along the guide rod under the joint action of the elastic force of the vibration spring and the moving inertia of the movable block, the adjusting box is driven to shake back and forth, and thus the effect of preventing accumulation is achieved, the tobacco can be uniformly collected, and the storage space of the collecting box is effectively saved.

Description

Technical Field

[0001] This invention relates to the field of tobacco leaf grading technology, specifically to a multi-sensor integrated tobacco leaf grading monitoring device and method. Background Technology

[0002] The grading of tobacco leaves is an important part of the quality control in the tobacco industry. At present, my country’s flue-cured tobacco production adopts a 40-grade standard, which uses the part of the tobacco leaf and color as grouping factors, and then classifies the leaves according to seven grading factors: maturity, color, leaf length, oil content, identity, leaf structure and damage.

[0003] In existing technologies, manual grading relies on sensory judgment, which is affected by factors such as personal experience, visual fatigue, and ambient lighting, resulting in inconsistent grading standards, strong subjectivity, and large fluctuations in accuracy.

[0004] To overcome the above shortcomings, a prior art Chinese patent (publication number CN217007015U) discloses a tobacco leaf curing grade identification device, including a frame, a drive motor mounted on the side of the frame, a conveyor belt connected to the output shaft of the drive motor, a first driven shaft mounted in the middle of the conveyor belt, a second driven shaft at one end of the conveyor belt, a gantry frame mounted on the top of the frame, and a slot connected to the top of the gantry frame. A camera takes photos of the tobacco leaves passing through the gantry frame at intervals and compares them with pre-stored grade photos in a database. When the grade is determined to be Grade 1, a screw adjusts the first grade cavity to be directly below one end of the conveyor belt, causing the Grade 1 tobacco leaves to fall into the first grade cavity. When the grade is determined to be Grade 2, the screw adjusts the second grade cavity to be directly below one end of the conveyor belt, causing the tobacco leaves to fall into the second grade cavity for temporary storage. This device can identify the grade of tobacco leaves, improving the efficiency of tobacco leaf grading.

[0005] To overcome the above shortcomings, a prior art Chinese patent (publication CN112871744B) discloses a tobacco leaf single-leaf conveying and sorting device, including a feeding section, a detection section, and a sorting section; the feeding section is a dual-station feeding section, including a lower feeding platform for stacking materials, a lower feeding frame, a lower feeding belt, an upper feeding platform for stacking materials, an upper feeding frame, an upper feeding belt, a lifting frame, and a lifting belt; the lifting belt conveys the material from bottom to top to the detection section; the detection section detects each leaf... The tobacco leaves are graded and a feeding signal is sent to the sorting section of the sorting department corresponding to the grade. The sorting department is equipped with multiple corresponding sorting sections according to the grade of the tobacco leaves. After receiving the feeding signal, the sorting section of the corresponding grade opens, allowing the tobacco leaves conveyed backward to fall into the material box of the corresponding grade sorting section. The dual-station function is to enable two people to feed the tobacco leaves at the same time, so as to improve the conveying efficiency of the tobacco leaves. After the detection department determines the specific grade of each tobacco leaf, the tobacco leaves of the corresponding grade are sorted and stored by the sorting department.

[0006] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation. For example, during the transport of tobacco leaves, the moisture inside the leaves makes the surface of the leaves sticky. Sticky leaves tend to adhere to the surface of the transport device, affecting their classification after grading and increasing the risk of them falling to the ground. Summary of the Invention

[0007] The purpose of this invention is to provide a multi-sensor integrated tobacco leaf grading and monitoring device and method to solve the problem mentioned in the background art that, during tobacco leaf transportation, the presence of moisture inside the tobacco leaves makes the surface of the tobacco leaves sticky, which easily adheres to the surface of the transportation device, affecting the classification after grading and increasing the risk of the leaves falling to the ground.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a multi-sensor integrated tobacco leaf grade determination and monitoring device, comprising a conveying platform and a support bracket disposed in the middle of the conveying platform, wherein a sensor module is disposed on the support bracket, a support platform is installed at the left end of the conveying platform, and a determination and classification mechanism is disposed at the upper end of the support platform, wherein the determination and classification mechanism classifies and collects tobacco leaves, a side plate is installed at the left end of the conveying platform, and a scraper is disposed on the inner side of the side plate, wherein an anti-sticking mechanism is disposed at the end of the scraper, wherein the anti-sticking mechanism prevents tobacco leaves from sticking together, and a uniform stacking mechanism is disposed on the left side of the scraper, wherein the uniform stacking mechanism prevents tobacco leaves from unilaterally accumulating and occupying collection space.

[0009] Furthermore, the sensor module includes five sensor units: an industrial camera, a near-infrared spectrometer, a laser displacement sensor, a hyperspectral imager, and an environmental sensor group. A supplementary lighting source is set around the industrial camera, and the conveyor belt in the conveying platform is set as a transparent conveyor belt.

[0010] Furthermore, the classification mechanism is equipped with a threaded screw, which is rotatably mounted on the upper end of the support platform. The right end of the threaded screw is connected to the output end of a servo motor, and the upper end of the servo motor is fixedly mounted on the lower end of the bracket. A movable block is threaded onto the surface of the threaded screw.

[0011] Furthermore, a limiting cover is installed on the upper end of the support platform, and the front and rear ends of the movable block are slidably connected inside the limiting cover. A guide rod is fixedly installed on the outer side of the movable block, and a sliding plate is installed through the surface of the guide rod. An adjustment box is fixedly installed on the upper end of the sliding plate. A partition is set in the center of the adjustment box, and two collection boxes are set inside the adjustment box through the partition. A weighing sensor is installed inside the collection box, and a horizontal plate is installed on the upper end of the weighing sensor. The outer side of the horizontal plate is attached to the inner wall of the collection box.

[0012] Furthermore, a vibration spring is sleeved on the surface of the guide rod, and the outer end of the vibration spring is fixedly installed on the inner wall of the slide plate, and the inner end of the vibration spring is fixedly installed on the outer side of the movable block. An abutment block is fixedly installed on the inner end of the limiting cover plate, and the abutment block corresponds to the slide plate. The outer side of the guide rod corresponds to the end hole of the limiting cover plate.

[0013] Furthermore, the anti-sticking mechanism is equipped with a vibrating plate, and one end of the vibrating plate that penetrates the inside of the side plate is connected to the end of the scraper. A cam is fixedly installed at the end of the conveyor belt of the conveying platform.

[0014] Furthermore, a grooved plate is fixedly installed on the side end of the conveying platform, and a striking plate is slidably connected inside the grooved plate. The striking end of the striking plate passes through the side end of the conveying platform. The striking plate corresponds to the cam, and the striking end of the striking plate corresponds to the vibrating plate. A reciprocating spring is fixedly installed at the end of the striking plate, and the end of the reciprocating spring away from the striking plate is fixedly installed on the side of the conveying platform.

[0015] Furthermore, the uniform stacking mechanism is provided with a toggle plate, and the front and rear ends of the toggle plate are rotatably mounted to the side of the scraper. A torsion spring is sleeved on the surface of the toggle plate, and the end of the torsion spring is fixedly mounted to the side of the scraper. The interior of the toggle plate is a cavity.

[0016] Furthermore, a transmission rod is fixedly installed on the side of the actuating plate, and the end of the transmission rod is attached to the lower end of the vibrating plate. The lower end of the vibrating plate is arc-shaped, and an arc-shaped groove is opened inside the side plate. The rotation center of the actuating plate and the transmission rod is at the same point as the arc at the bottom of the vibrating plate and the center of the groove inside the side plate.

[0017] This invention also proposes a multi-sensor integrated method for judging and monitoring tobacco leaf grades, characterized by being implemented using the aforementioned multi-sensor integrated tobacco leaf grade judging and monitoring device, and further including the following specific steps: S1: The conveyor platform is used to transport tobacco leaves. Supports are set at the upper and lower ends of the conveyor platform, and sensor modules are installed through the supports. The sensor modules are composed of multiple sensors. As the conveyor platform transports tobacco leaves, the threaded screw rotates on the support platform, driving the movable block connected to the surface thread. Under the rotation of the threaded screw, the movable block can be controlled to move the upper adjustment box according to the grade judgment of the sensor module. When it is necessary to collect tobacco leaves of a certain grade, the movable block drives the corresponding collection box inside the adjustment box to align with the left side of the conveyor belt of the conveyor platform, so that the tobacco leaves fall into the collection box accordingly, enabling classified collection. As the tobacco leaves fall into the collection box, when the movable block drives the upper adjustment box to move to the position of the adjusted collection box, the slide plate stops being squeezed by the abutment block inside the limit cover. Through the elasticity of the vibration spring and the inertia of the movable block, the slide plate swings back and forth along the guide rod. The movement of the slide plate makes the adjustment box shake back and forth to achieve the effect of preventing accumulation, so as to collect tobacco leaves evenly and save the space of the collection box for collecting tobacco leaves. S2: The scraper is tilted. As the conveyor belt transports tobacco leaves, the cam rotates and actuates the striking plate inside the groove plate. When the striking plate is actuated, it compresses the reciprocating spring. The compression of the reciprocating spring causes the striking plate to vibrate back and forth. The force of the vibration is transmitted to the scraper, thereby assisting the tobacco leaves to fall and be collected, promoting collection efficiency, preventing the tobacco leaves from sticking to the surface of the conveyor belt, and reducing the risk of the tobacco leaves falling to the ground and causing pollution as they move to the bottom of the conveyor belt. S3: When the collection box moves and adjusts its position, the actuating plate can fold due to the compression of the partition. The hollow interior of the actuating plate reduces its mass, and the cavity design inside the actuating plate provides a better vibration effect with the tapping vibration. The vibration of the actuating plate promotes the uniform stacking of tobacco leaves inside the collection box, further improving the stacking effect. The vibration effect of the vibrating plate can act not only on the scraper but also on the actuating plate. When the collection box contains a large amount of tobacco leaves, the actuating plate has a better uniform stacking effect.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. As the tobacco leaves gradually fall into the collection box, the movable block moves the upper adjustment box to the position corresponding to the collection box. At this time, the slide plate is no longer squeezed by the abutment block inside the limit cover. Under the combined action of the elasticity of the vibration spring and the inertia of the movable block, the slide plate swings back and forth along the guide rod, thereby driving the adjustment box to shake back and forth, thus achieving the anti-accumulation effect, so that the tobacco leaves can be collected evenly and effectively save the storage space of the collection box. Furthermore, when the screw rotates, it can drive the movable block to move the upper adjustment box according to the grade determination result of the sensor module. The interior of the adjustment box is divided into two independent spaces by a partition, and two collection boxes are placed in each space to classify and collect tobacco leaves that meet the required grade and those that do not.

[0019] 2. Tobacco leaves have a certain amount of moisture and are easy to stick to the surface of the conveyor belt inside the conveyor platform. Therefore, a side plate is provided on the left side of the conveyor platform, and a scraper is installed in the middle of the side plate. Its end is closely attached to the surface of the conveyor belt, which can effectively scrape off the sticky tobacco leaves, prevent the tobacco leaves from remaining on the conveyor belt, and reduce the risk of them falling to the ground and causing pollution as they move to the bottom of the conveyor belt. Furthermore, the scraper is set at an angle. When the conveyor belt transports tobacco leaves, the internal rollers rotate, which drives the cam to rotate. The reciprocating spring is compressed, causing the striking plate to vibrate reciprocally. The striking plate strikes the vibrating plate at the end of the scraper. The vibrating plate is excited and vibrates, transmitting the vibration force to the scraper, causing the tobacco leaves on the scraper to vibrate and fall into the collection box below, thereby assisting the tobacco leaves to fall and be collected, and improving the collection efficiency.

[0020] 3. The hollow design inside the agitator plate gives it a better vibration effect when struck. As the agitator plate vibrates, it promotes the uniform stacking of tobacco leaves in the collection box, further improving the stacking quality. At the same time, when the agitator plate rotates, the transmission rod moves along the arc at the bottom of the vibrating plate and can be put into the groove inside the side plate. The center point of the arc remains consistent, effectively avoiding motion interference. The vibration of the vibrating plate not only acts on the scraper but also is transmitted to the agitator plate. When there are more tobacco leaves in the collection box, the agitator plate can achieve a better uniform stacking effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below.

[0023] Figure 3 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0024] Figure 4 This is a top-view three-dimensional structural diagram of the adjustment box of the present invention.

[0025] Figure 5 This is a bottom-view three-dimensional structural diagram of the movable block of the present invention.

[0026] Figure 6 This is a top-view three-dimensional structural diagram of the scraper of the present invention.

[0027] Figure 7 This is a side sectional three-dimensional structural diagram of the adjustment box of the present invention.

[0028] Figure 8 This is a top-view three-dimensional structural diagram of the striking plate of the present invention.

[0029] Figure 9 This is a three-dimensional structural diagram of the toggle plate of the present invention, viewed from below.

[0030] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point A in the middle.

[0031] Figure 11 This is a three-dimensional structural diagram of the transmission rod of the present invention, viewed from below.

[0032] In the diagram: 1. Conveying platform; 2. Bracket; 3. Sensor module; 4. Support platform; 5. Servo motor; 6. Threaded screw; 7. Movable block; 8. Adjustment box; 9. Collection box; 10. Weighing sensor; 11. Horizontal plate; 12. Partition plate; 13. Limiting cover plate; 14. Guide rod; 15. Slide plate; 16. Vibration spring; 17. Abutment block; 18. Side plate; 19. Scraper; 20. Vibrating plate; 21. Grooved plate; 22. Striking plate; 23. Reciprocating spring; 24. Cam; 25. Actuating plate; 26. Torsion spring; 27. Transmission rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0034] Example 1: As Figures 1-5The technical solution shown is a multi-sensor integrated tobacco leaf grading and monitoring device. To address the problem of uneven stacking occupying excessive collection space, it discloses: a conveying platform 1 and a support 2 located at the middle of the conveying platform 1, with a sensor module 3 mounted on the support 2; a support platform 4 mounted on the left end of the conveying platform 1, with a grading and sorting mechanism mounted on the upper end of the support platform 4, which sorts and collects the tobacco leaves; the sensor module 3 includes five sensor units: an industrial camera, a near-infrared spectrometer, a laser displacement sensor, a hyperspectral imager, and an environmental sensor group; supplementary lighting is provided around the industrial camera; the grading and sorting mechanism is equipped with a threaded screw 6, which is rotatably mounted on the upper end of the support platform 4; the right end of the threaded screw 6 is connected to the output end of a servo motor 5, and the upper end of the servo motor 5 is fixedly mounted on the lower end of the support 2; a movable block 7 is threaded onto the surface of the threaded screw 6; and the support platform 4... A limiting cover plate 13 is installed at the upper end, and the front and rear ends of the movable block 7 are slidably connected inside the limiting cover plate 13. A guide rod 14 is fixedly installed on the outer side of the movable block 7, and a slide plate 15 is installed through the surface of the guide rod 14. An adjustment box 8 is fixedly installed at the upper end of the slide plate 15. A partition 12 is set in the center of the adjustment box 8, and two collection boxes 9 are respectively set inside the adjustment box 8 through the partition 12. A weighing sensor 10 is installed inside the collection box 9, and a horizontal plate 11 is installed at the upper end of the weighing sensor 10. The outer side of the horizontal plate 11 is attached to the inner wall of the collection box 9. A vibration spring 16 is sleeved on the surface of the guide rod 14, and the outer end of the vibration spring 16 is fixedly installed on the inner wall of the slide plate 15. The inner end of the vibration spring 16 is fixedly installed on the outer side of the movable block 7. An abutment block 17 is fixedly installed on the inner end of the limiting cover plate 13, and the abutment block 17 corresponds to the slide plate 15. The outer side of the guide rod 14 corresponds to the end hole of the limiting cover plate 13.

[0035] The conveyor platform 1 is used to convey tobacco leaves. The upper and lower ends of the conveyor platform 1 are equipped with brackets 2. The sensor module 3 is installed through the brackets 2. The sensor module 3 is composed of multiple sensors. The sensor module 3 is equipped with two industrial cameras, which are respectively set at the upper and lower ends of the transparent conveyor belt. They are used to simultaneously collect front and back images of the tobacco leaves. The front camera is used to extract the shape, length, width, color distribution, chromaticity and damaged area features of the tobacco leaves.The rear camera is used to extract the structural and identification features of tobacco leaves. The near-infrared spectrometer probe in sensor module 3 is positioned perpendicular to the tobacco leaf surface to collect the near-infrared reflectance spectrum of the leaves, extracting chemical composition features, including total sugar, reducing sugar, nicotine, total nitrogen, chloride ion, and potassium ion content, as well as indicators of tobacco leaf maturity and oil content. The laser displacement sensor in sensor module 3 is used for non-contact measurement of tobacco leaf thickness, with the laser emitter and receiver positioned on opposite sides of the conveyor belt. The hyperspectral imager in sensor module 3 collects hyperspectral reflectance images of tobacco leaves in the 400nm–1000nm wavelength range, extracting chlorophyll content, moisture content, and spectral characteristic parameters as auxiliary criteria for judging intrinsic quality. The environmental sensor group in sensor module 3 includes temperature and humidity sensors for real-time acquisition and detection of environmental parameters, serving as environmental correction factors for the grading model. Supplemental lighting sources are placed around the industrial camera to illuminate the direction of information acquisition. The sampling rate of each sensor in sensor module 3 must meet the requirements for rapid grade determination: the industrial camera at 30 fps to 60 fps. Images of the front and back of tobacco leaves are acquired at a frame rate of fps. The hyperspectral imager has a sampling rate of 10 fps to 30 fps, the near-infrared spectrometer acquires chemical composition data at a rate of 10 to 20 spectra per second, the laser displacement sensor has a sampling rate of 1 kHz to 5 kHz for thickness measurement, and the environmental sensor group detects temperature and humidity in real time at a frequency of 1 Hz to 10 Hz. The response time of the entire judgment process, from triggering sampling to outputting the classification control signal, is controlled within 50 ms to 200 ms. Within milliseconds to ensure coordination with the movement speed of the threaded screw 6, after the grade judgment and monitoring of the tobacco leaves are completed by the sensor module 3, as the conveying platform 1 conveys, the servo motor 5 is started, and the start of the servo motor 5 drives the threaded screw 6 to rotate. When the threaded screw 6 rotates on the support platform 4, it drives the movable block 7 connected by the surface thread to move. The movable block 7 slides within the limit cover plate 13. Thus, under the rotation of the threaded screw 6, the movable block 7 can be controlled to drive the upper adjustment box 8 to move according to the grade judgment of the sensor module 3. It is recommended that the threaded screw 6 driving the movable block 7 be a ball screw with a lead of 5 mm to 10 mm, driven by a servo motor. The speed of the threaded screw 6 is controlled between 300 rpm and 600 rpm, and the corresponding moving speed of the movable block 7 is 25 mm / s to 100 mm / s. In order to achieve smooth switching of the collection box 9 during the falling of the tobacco leaves, the acceleration and deceleration should be set to 0.2 m / s. 2 up to 0.5 m / s 2The start-up and stop process is smooth to avoid tobacco leaves flying out or misaligning due to impact. The positioning accuracy is required to reach ±1 mm to ensure that the collection box 9 inside the regulating box 8 can accurately align with the left side of the conveyor belt of the conveyor platform 1. The interior of the regulating box 8 is divided into two spaces by the partition 12, and two collection boxes 9 are placed in the two spaces respectively. The collection box 9 can collect tobacco leaves that meet the required grade and those that do not meet the required grade separately. When it is necessary to collect qualified tobacco leaves, the movable block 7 moves the corresponding collection box 9 inside the regulating box 8 to align with the left side of the conveyor belt of the conveyor platform 1, so that the tobacco leaves fall into the corresponding collection box 9. The collection box 9 is also equipped with a weighing sensor 10 and a horizontal plate 11, which is attached to the collection box 9. The inner wall prevents tobacco leaves from falling into the gaps. The weighing sensor 10, after removing the mass of the cross plate 11, is used to measure the weight of the tobacco leaves, thus enabling classified collection. As the tobacco leaves fall into the collection box 9, when the movable block 7 moves the upper adjustment box 8, the left or right collection box 9 is aligned with the conveyor belt position in the conveyor platform 1. The slide plate 15 stops being squeezed by the abutment block 17 inside the limiting cover plate 13. Through the elasticity of the vibration spring 16 and the inertia of the movable block 7, the slide plate 15 swings back and forth along the guide rod 14. It is recommended that the vibration spring 16 used in the shaking mechanism of the adjustment box 8 has a stiffness range of 200. A compression spring with a strength of N / m to 500 N / m is used. The spring material can be 65Mn or 304 stainless steel to ensure fatigue resistance and corrosion resistance. The wire diameter is 1.0 mm to 1.5 mm, and the effective number of coils is set to 5 to 8. The spring is installed between the movable block 7 and the slide plate 15. When the slide plate 15 is disengaged from the pressure of the abutment block 17 inside the limiting cover plate 13, the slide plate 15 is driven to reciprocate along the guide rod 14 by the inertia of the movable block 7 and the elastic force of the spring, thereby realizing the low-frequency vibration of the regulating box 8. The vibration frequency is about 5 Hz to 15 Hz, and the amplitude is ±2 mm to ±5 mm. It is suitable for the regulating box 8 and the collection box 9 assembly with a total weight of about 2 kg to 5 kg. The movement of the slide plate 15 makes the regulating box 8 vibrate back and forth to achieve the effect of preventing accumulation and can collect tobacco leaves evenly, thereby saving the space of the collection box 9 for collecting tobacco leaves.

[0036] Example 2: Figures 1-8The technical solution shown, based on Embodiment 1, discloses the following to address the problem of tobacco leaves easily sticking to the conveyor belt due to humidity: a side plate 18 is installed at the left end of the conveyor platform 1, and a scraper 19 is provided on the inner side of the side plate 18. An anti-sticking mechanism is provided at the end of the scraper 19 to prevent tobacco leaves from sticking. The anti-sticking mechanism is provided with a vibrating plate 20, and one end of the vibrating plate 20 that penetrates the interior of the side plate 18 is connected to the end of the scraper 19. A cam 24 is fixedly installed at the end of the conveyor belt of the conveyor platform 1. A grooved plate 21 is fixedly installed at the side end of the conveyor platform 1, and a striking plate 22 is slidably connected inside the grooved plate 21. The striking end of the striking plate 22 penetrates the side end of the conveyor platform 1. The striking plate 22 corresponds to the cam 24, and the striking end of the striking plate 22 corresponds to the vibrating plate 20. A reciprocating spring 23 is fixedly installed at the end of the striking plate 22, and the end of the reciprocating spring 23 away from the striking plate 22 is fixedly installed on the side of the conveyor platform 1.

[0037] Tobacco leaves are rich in moisture and natural gums, resulting in significant stickiness. They easily adhere to the surface of the conveyor belt inside the conveyor platform 1. To address this challenge, a side plate 18 is cleverly arranged on the left side of the conveyor platform 1. A scraper 19 is installed in the middle of the side plate 18, and the end of the scraper 19 precisely adheres to the surface of the conveyor belt, forming an effective physical barrier to scrape off the tobacco leaves. The scraper 19 is angled to utilize gravity for separation. As the conveyor belt continuously transports tobacco leaves, its internal rollers drive a cam 24 to rotate periodically. Each rotation of the cam 24 precisely actuates a striking plate 22 installed inside a grooved plate 21. The cam 24, which drives the striking plate 22 to produce periodic strikes, has a base circle radius of 20 mm to 30 mm and a lift of 2 mm to 5 mm. The impact plate 22 has sufficient displacement to impact the vibrating plate 20. Both the push and return motion angles are set to 60° to 90°, with a far-dwell angle of 30° to 60° to ensure the impact plate 22 can disengage from the vibrating plate 20 after impact. The cam 24 profile curve is recommended to use a constant velocity motion law or a sinusoidal acceleration curve to reduce impact and noise, adapting to the low-to-medium speed conveyor belt end roller drive method. After being subjected to force, the impact plate 22 generates displacement, which in turn compresses the reciprocating spring 23. The stiffness of the reciprocating spring 23 connected to the end of the impact plate 22 is recommended to be 100 N / m to 300 N / m. The pre-compression of the spring can be adjusted according to the lift of the cam 24. The mass of the impact plate 22 itself is approximately 0.1 kg to 0.3 kg. Under the periodic tapping of the cam 24, the impact plate 22 repeatedly strikes the vibrating plate 20 at a frequency of 10 Hz to 30 Hz, generating an impact force of approximately 5. The high-frequency micro-impact, ranging from N to 15N, causes the vibrating plate 20 to generate mechanical vibrations of 0.1 mm to 0.5 mm, which are transmitted to the scraper 19. This effectively peels off the tobacco leaves adhering to the conveyor belt surface and the scraper 19. The reciprocating spring 23 forms a reciprocating motion between compression and rebound, causing the striking plate 22 to enter a stable high-frequency vibration state. This reciprocating striking plate 22 precisely targets the vibrating plate 20 at the end of the scraper 19 and intermittently strikes it. After being struck, the vibrating plate 20 generates continuous and uniform mechanical vibrations. This vibration energy is transmitted to the scraper 19 through the structure, allowing the tobacco leaf residues adhering to the upper end of the scraper 19 to be smoothly peeled off under the action of micro-vibration and fall into the collection box 9 at the lower end. This design not only effectively assists the falling and collection of tobacco leaves, greatly improving collection efficiency, but also fundamentally avoids the problem of cumulative blockage caused by tobacco leaves adhering to the surface of the conveyor belt for a long time. This significantly reduces the risk of tobacco leaves falling to the bottom of the conveyor belt and scattering on the ground, causing pollution and waste of raw materials.

[0038] Example 3: Figures 1-11The technical solution shown, based on Embodiment 2, discloses the following to address the problem of poor anti-stacking effect: the conveyor belt in the conveying platform 1 is a transparent conveyor belt; a uniform stacking mechanism is provided on the left side of the scraper 19, and the uniform stacking mechanism prevents tobacco leaves from unilaterally accumulating and occupying the collection space; the uniform stacking mechanism is provided with a deflector plate 25, and the front and rear ends of the deflector plate 25 are rotatably mounted to the side of the scraper 19; a torsion spring 26 is sleeved on the surface of the deflector plate 25, and the end of the torsion spring 26 is fixedly mounted to the side of the scraper 19; the interior of the deflector plate 25 is hollow; a transmission rod 27 is fixedly mounted on the side of the deflector plate 25, and the end of the transmission rod 27 is attached to the lower end of the vibrating plate 20; the lower end of the vibrating plate 20 is arc-shaped; and an arc-shaped groove is opened inside the side plate 18; the rotation center of the deflector plate 25 and the transmission rod 27 is a point on the arc at the bottom of the vibrating plate 20 and the center of the groove inside the side plate 18.

[0039] A toggle plate 25 is rotatably mounted on the side of the scraper 19. A torsion spring 26 is provided between the toggle plate 25 and the scraper 19. The torsion spring 26 allows the toggle plate 25 to have a vibration range. When the collection box 9 moves to adjust its position, the toggle plate 25 can fold as it is squeezed by the partition 12. The toggle plate 25 can fall into the corresponding collection box 9 as the adjustment box 8 moves. When the vibrating plate 20 is struck by the striking plate 22, the vibration force generated by the vibrating plate 20 is transmitted to the transmission rod 27 with its lower end arc fitting. The transmission rod 27 transmits the vibration force to the toggle plate 25. The toggle plate 25 has a hollow interior, which can reduce the height of the toggle plate. The mass of the 25 and the cavity inside the agitator 25 can have a better vibration effect with the vibration of the tapping. With the vibration of the agitator 25, the tobacco leaves inside the collection box 9 are evenly stacked, which further improves the stacking effect. At the same time, with the rotation of the agitator 25, the transmission rod 27 moves along the arc of the bottom of the vibrating plate 20. The transmission rod 27 can also be put into the groove inside the side plate 18. The center point of their arcs are consistent, which can avoid motion interference. The vibration effect of the vibrating plate 20 can act not only on the scraper 19 but also on the agitator 25. When the agitator 25 holds a lot of tobacco leaves inside the collection box 9, it has a better even stacking effect.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-sensor integrated tobacco leaf grade determination and monitoring device, characterized in that: The system includes a conveying platform (1) and a support (2) set in the middle of the conveying platform (1), and a sensor module (3) is set on the support (2). A support platform (4) is installed on the left end of the conveying platform (1), and a classification mechanism is set on the upper end of the support platform (4). The classification mechanism classifies and collects tobacco leaves. A side plate (18) is installed on the left end of the conveying platform (1), and a scraper (19) is set on the inner side of the side plate (18). An anti-sticking mechanism is set at the end of the scraper (19), and the anti-sticking mechanism prevents tobacco leaves from sticking. A uniform stacking mechanism is set on the left side of the scraper (19), and the uniform stacking mechanism prevents tobacco leaves from unilaterally accumulating and occupying the collection space.

2. The multi-sensor integrated tobacco leaf grade determination and monitoring device according to claim 1, characterized in that: The sensor module (3) includes five sensor units, namely an industrial camera, a near-infrared spectrometer, a laser displacement sensor, a hyperspectral imager and an environmental sensor group. A supplementary light source is set around the industrial camera, and the conveyor belt in the conveying platform (1) is set as a transparent conveyor belt.

3. The multi-sensor integrated tobacco leaf grade determination and monitoring device according to claim 1, characterized in that: The classification mechanism is equipped with a threaded screw (6), which is rotatably mounted on the upper end of the support platform (4). The right end of the threaded screw (6) is connected to the output end of the servo motor (5), and the upper end of the servo motor (5) is fixedly mounted on the lower end of the bracket (2). The threaded screw (6) has a movable block (7) threaded on its surface.

4. The multi-sensor integrated tobacco leaf grade determination and monitoring device according to claim 3, characterized in that: The upper end of the support platform (4) is equipped with a limiting cover plate (13), and the front and rear ends of the movable block (7) are slidably connected inside the limiting cover plate (13). A guide rod (14) is fixedly installed on the outer side of the movable block (7), and a slide plate (15) is installed through the surface of the guide rod (14). An adjustment box (8) is fixedly installed on the upper end of the slide plate (15). A partition plate (12) is provided in the center of the adjustment box (8), and two collection boxes (9) are respectively set inside the adjustment box (8) through the partition plate (12). A weighing sensor (10) is installed inside the collection box (9), and a horizontal plate (11) is installed on the upper end of the weighing sensor (10). The outer side of the horizontal plate (11) is attached to the inner wall of the collection box (9).

5. The multi-sensor integrated tobacco leaf grade determination and monitoring device according to claim 4, characterized in that: The guide rod (14) is fitted with a vibration spring (16), and the outer end of the vibration spring (16) is fixedly installed on the inner wall of the slide plate (15), and the inner end of the vibration spring (16) is fixedly installed on the outer side of the movable block (7). The inner end of the limiting cover plate (13) is fixedly installed with an abutment block (17), and the abutment block (17) corresponds to the slide plate (15). The outer side of the guide rod (14) corresponds to the end hole of the limiting cover plate (13).

6. The multi-sensor integrated tobacco leaf grade determination and monitoring device according to claim 1, characterized in that: The anti-sticking mechanism is provided with a vibrating plate (20), and one end of the vibrating plate (20) that passes through the inside of the side plate (18) is connected to the end of the scraper (19). The conveyor belt end of the conveyor platform (1) is fixedly installed with a cam (24).

7. The multi-sensor integrated tobacco leaf grade determination and monitoring device according to claim 6, characterized in that: A grooved plate (21) is fixedly installed on the side end of the conveying platform (1), and a striking plate (22) is slidably connected inside the grooved plate (21). The striking end of the striking plate (22) penetrates the side end of the conveying platform (1). The striking plate (22) corresponds to the cam (24), and the striking end of the striking plate (22) corresponds to the vibrating plate (20). A reciprocating spring (23) is fixedly installed at the end of the striking plate (22), and the end of the reciprocating spring (23) away from the striking plate (22) is fixedly installed on the side of the conveying platform (1).

8. The multi-sensor integrated tobacco leaf grade determination and monitoring device according to claim 1, characterized in that: The uniform stacking mechanism is provided with a toggle plate (25), and the front and rear ends of the toggle plate (25) are rotatably mounted on the side of the scraper (19). A torsion spring (26) is sleeved on the surface of the toggle plate (25), and the end of the torsion spring (26) is fixedly mounted on the side of the scraper (19). The interior of the toggle plate (25) is a cavity.

9. The multi-sensor integrated tobacco leaf grade determination and monitoring device according to claim 8, characterized in that: A transmission rod (27) is fixedly installed on the side of the actuating plate (25), and the end of the transmission rod (27) is attached to the lower end of the vibrating plate (20). The lower end of the vibrating plate (20) is arc-shaped, and an arc-shaped groove is opened inside the side plate (18). The rotation center of the actuating plate (25) and the transmission rod (27) is a point with the arc at the bottom of the vibrating plate (20) and the center of the groove inside the side plate (18).

10. A multi-sensor integrated method for determining and monitoring tobacco leaf grades, characterized in that, The implementation using the multi-sensor integrated tobacco leaf grading and monitoring device according to any one of claims 1-9 further includes the following specific steps: S1: The conveying platform (1) is used to convey tobacco leaves. The upper and lower ends of the conveying platform (1) are equipped with brackets (2). The sensor module (3) is installed through the brackets (2). The sensor module (3) is composed of multiple sensors. As the conveying platform (1) conveys, the threaded screw (6) rotates on the support platform (4) and drives the movable block (7) connected by the surface thread. Thus, under the rotation of the threaded screw (6), the movable block (7) can be controlled to move the upper adjustment box (8) according to the grade determination of the sensor module (3). When it is necessary to collect tobacco leaves of the required grade, the movable block (7) drives the corresponding collection box (9) inside the adjustment box (8) to communicate with the conveying platform (1). The left side of the conveyor belt corresponds to the position so that the tobacco leaves fall into the collection box (9) and can be collected in categories. As the tobacco leaves fall into the collection box (9), when the movable block (7) moves the upper adjustment box (8) to adjust the position of the collection box (9), the slide plate (15) stops being squeezed by the abutment block (17) inside the limiting cover plate (13). Through the elasticity of the vibration spring (16) and the inertia of the movable block (7), the slide plate (15) swings back and forth along the guide rod (14). The movement of the slide plate (15) makes the adjustment box (8) shake back and forth to achieve the effect of preventing accumulation and can collect tobacco leaves evenly, thereby saving the space of the collection box (9) for collecting tobacco leaves. S2: The scraper (19) is set at an angle. As the conveyor belt transports tobacco leaves, the cam (24) rotates and actuates the striking plate (22) inside the groove plate (21). When the striking plate (22) is actuated, it compresses the reciprocating spring (23). The reciprocating spring (23) is compressed, causing the striking plate (22) to vibrate back and forth. The force of the vibration is transmitted to the scraper (19), thereby assisting the tobacco leaves to fall and collect, promoting collection efficiency, avoiding the tobacco leaves from sticking to the surface of the conveyor belt, and reducing the risk of the tobacco leaves falling to the ground and causing pollution as they move with the conveyor belt. S3: When the agitator (25) moves and adjusts the position of the collection box (9), it can fold as the partition (12) squeezes. The hollow interior of the agitator (25) can reduce the mass of the agitator (25), and the cavity inside the agitator (25) can have a better vibration effect with the vibration of the tap. As the agitator (25) vibrates, it promotes the uniform stacking of tobacco leaves inside the collection box (9), further improving the stacking effect. The vibration effect of the vibrating plate (20) can act not only on the scraper (19) but also on the agitator (25). When the agitator (25) holds more tobacco leaves inside the collection box (9), it has a better uniform stacking effect.

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