A mechanical compound seed sowing and photoelectric seed supplementing integrated pepper seed sower

Abstract

The application discloses a kind of air suction mechanical compound seed arrangement and photoelectricity reseeding integrated pepper seed arrangement, it is related to agricultural machinery technical field, including seed pushing shell, seed pushing shell is formed in seed pushing cavity, it is equipped with seed arrangement disc, seed pushing mechanism, directional combing mechanism and sensing device in it;Multiple convex adsorption holes are equipped on seed arrangement disc along its circumferential direction, and negative pressure device is equipped on the rear side of seed arrangement disc;Driving mechanism for driving seed arrangement disc rotation is equipped on seed pushing shell;Wherein, directional combing mechanism is used for the posture correction of seed in adsorption state, so that it is stably maintained flat adsorption posture;Negative pressure device is used for forming negative pressure environment on the rear side of seed arrangement disc, so that convex adsorption hole stably adsorbs seed;Seed pushing mechanism is used for pushing seed from convex adsorption hole and discharging;Sensing device is used for detecting the adsorption state of each convex adsorption hole.The application can realize air suction mechanical compound seed arrangement and reseeding of pepper seed, and the overall structure is simple, which can promote the application of pepper mechanized direct seeding technology.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a chili seed metering device that integrates pneumatic suction mechanical seed metering and photoelectric seeding. Background Technology

[0002] For a long time, chili pepper cultivation in my country has relied primarily on manual seedling raising and transplanting, with a mechanized direct seeding rate of only about 5%. High labor costs and intense work severely restrict the large-scale and mechanized development of the chili pepper industry. Chili pepper seeds are small in size and irregular in shape, requiring high precision seed metering. However, existing seed metering devices are mostly designed for large seeds such as grains, and research on dedicated seed metering devices suitable for small chili pepper seeds is limited. Traditional mechanical seed metering devices are prone to problems such as seed damage, missed sowing, and double sowing. Single air-suction seed metering devices suffer from insufficient adsorption stability and lack of compensation for missed sowing. Furthermore, most devices do not integrate online detection and automatic re-sowing functions, making it difficult to guarantee direct seeding quality. Therefore, there is an urgent need to develop dedicated seed metering devices suitable for small chili pepper seeds to improve sowing accuracy and pass rate, and promote the application of mechanized direct seeding technology for chili peppers. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a chili seed metering device that integrates pneumatic mechanical composite seed metering and photoelectric replanting, which can realize pneumatic mechanical composite seed metering and replanting of chili seeds. Its overall structure is simple and can promote the application of mechanized direct seeding technology for chili.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a chili seed metering device integrating pneumatic suction mechanical composite seed metering and photoelectric replanting, comprising a seed-dispensing shell, a seed-dispensing cavity formed inside the seed-dispensing shell, a seed box communicating with the seed-dispensing cavity on the front side of the seed-dispensing shell for holding seeds, a seed-dispensing disc and a seed-dispensing mechanism inside the seed-dispensing shell, and seed-dispensing holes on the seed-dispensing shell; a directional combing mechanism located at the front end of the seed-dispensing disc inside the seed-dispensing shell, and a sensing device inside the seed-dispensing shell; the seed-dispensing disc is rotatably disposed in the seed-dispensing cavity, and multiple convex adsorption holes are provided on the seed-dispensing disc along its circumference; a negative pressure device is provided on the rear side of the seed-dispensing disc; and a driving mechanism for driving the seed-dispensing disc to rotate is provided on the seed-dispensing shell. The directional combing mechanism is used to correct the posture of the seeds in the adsorption state, so that the seeds can maintain a stable flat adsorption posture; the negative pressure device is used to create a negative pressure environment on the back of the seed metering tray, so that the convex adsorption holes on the surface of the seed metering tray can stably adsorb the seeds; the seed picking mechanism is used to pick the seeds off the convex adsorption holes, and the picked seeds are discharged from the seed picking shell through the seed picking holes; the sensing device is used to detect the adsorption status of each convex adsorption hole, and generates a seed shortage signal when an empty convex adsorption hole is detected.

[0005] Furthermore, the directional sorting mechanism includes multiple baffles arranged in sequence, with posture correction seed bins formed between adjacent baffles. When seeds adsorbed by the seed metering disc enter the posture correction seed bin in an upright posture, the seeds are blocked by the baffles and cannot pass through, falling off the seed metering disc and being re-adsorbed in the next posture correction seed bin. When seeds enter the posture correction seed bin in a lying posture, the seeds can pass through smoothly, thereby uniformly correcting the posture of the adsorbed seeds to a lying posture.

[0006] Furthermore, the seed metering disc is rotatably connected to and driven by the driving mechanism. The convex adsorption holes on the seed metering disc are raised structures that are higher than the front surface of the seed metering disc. When the negative pressure environment forms a negative pressure, a pressure difference is generated at the convex adsorption holes to adsorb seeds.

[0007] Furthermore, the seed-dispensing mechanism is fixed to the lower inner side of the seed-dispensing housing, and includes a small motor and a rotating fan blade mounted on the output shaft of the small motor. The rotating fan blade is used to rotate and strike the chili seeds that arrive at the seed-dispensing station, so as to dispense the seeds from the convex adsorption holes.

[0008] Furthermore, the sensing device includes a through-beam sensor A installed on the front side of the seed-dispensing housing and a through-beam sensor B installed on the rear side of the seed-dispensing housing. The two are arranged opposite each other to form a signal penetration point, which is used to detect the adsorption status of seeds in each convex adsorption hole. When an empty convex adsorption hole is detected, a seed shortage signal is generated.

[0009] Furthermore, it also includes a control system, which is electrically connected to the seeding mechanism, the negative pressure device, the sensing device, and the drive mechanism. When the control system receives the missing seed signal from the sensing device and the marked empty convex adsorption hole moves to the replanting trigger position, it controls the drive mechanism to run at double speed for a short time to achieve automatic replanting.

[0010] Furthermore, it also includes a speckle assembly, which includes a speckle fixing plate rotatably disposed on the outside of the seed-dispensing housing and a speckle drive device for driving the speckle fixing plate to rotate. Multiple sets of specks are evenly distributed on the speckle fixing plate along its circumference. When one of the specks rotates to the seed-dispensing hole position, the seeds passing through the seed-dispensing hole can fall into the speckle. The speckle is used to transplant the seeds into the soil.

[0011] This invention also provides a seeding method for chili peppers using the above-mentioned integrated pneumatic-mechanical seeding and photoelectric seeding device, comprising the following steps: S1. The chili seeds are introduced into the seed-dispensing shell through the seed box, so that they enter the directional combing mechanism; S2. Activate the negative pressure device to create a negative pressure environment behind the seed metering tray, and the convex adsorption holes on the front of the seed metering tray adsorb the seeds. S3. The driving mechanism drives the seed metering disc to rotate, causing the adsorbed seeds to pass through the orientation correction seed bin of the orientation combing mechanism in sequence. Seeds adsorbed in an upright posture are blocked by the baffle and fall off, and are re-adsorbed in the next orientation correction seed bin. Seeds adsorbed in a lying posture pass through smoothly, thereby achieving uniform correction of the seed posture to a lying posture. S4. The sensing device detects the adsorption status of each convex adsorption hole. If an empty convex adsorption hole is detected, a missing type signal is generated. S5. When the control system receives the seed shortage signal, when the marked empty convex adsorption hole moves to the replanting trigger position, the control drive mechanism runs at double speed for a short time, so that the convex adsorption hole with adsorbed seeds located behind the empty convex adsorption hole reaches the replanting position within the same replanting time interval. S6. The seed-dispensing mechanism forcibly dispenses the seeds that arrive at the seed-dispensing station. The dispensed seeds fall into the duckbill assembly, and the seed sowing is completed through the duckbill assembly.

[0012] According to the above technical solution, the beneficial effects of the present invention are: 1. This invention uses a directional sorting mechanism to correct the posture of vertically positioned seeds, causing them to uniformly transform into a flat position. This effectively improves the adsorption and adhesion of flat chili seeds, significantly reduces the probability of seed detachment, and enhances the continuity and uniformity of seed distribution.

[0013] 2. The present invention adopts a convex adsorption pore structure. For small, irregularly shaped seeds such as chili peppers, the convex adsorption pore can fully fit with the seed surface, effectively reducing negative pressure leakage, significantly improving the adsorption reliability and fit of irregular small seeds, and making it more adaptable. It effectively improves the seed arrangement and adsorption effect of small, irregularly shaped seeds.

[0014] 3. This invention utilizes a composite control method combining a sensing device, a control system, and a rotating seed metering disc to achieve precise reseeding. When an empty convex adsorption hole that has not adsorbed seeds passes the sensing device, the sensing device collects and feeds back a seed shortage signal in real time. When the marked empty convex adsorption hole rotates to the reseeding trigger position, the control drive mechanism operates at double speed for a short time. While ensuring that the overall operation time remains unchanged, subsequent seeds quickly fill the empty convex adsorption holes, thereby effectively compensating for missed sowing defects, achieving automatic reseeding, and improving seed metering uniformity and sowing operation quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front side of the seed metering device of the present invention; Figure 2 This is a schematic diagram of the oblique rear structure of the seed metering device of the present invention; Figure 3 This is a perspective view of the front oblique side of the present invention; Figure 4This is a schematic diagram of the inner structure of the front housing of the present invention; Figure 5 This is a schematic diagram of the inner side of the rear housing of the present invention; Figure 6 This is a schematic diagram showing the relative positions of the seed metering disc and the through-beam sensor; Figure 7 A schematic diagram showing the relative positions of the seed metering disc and the seed orientation combing mechanism; Figure 8 for Figure 7 A magnified view of a section at point A in the middle; Figure 9 for Figure 7 A magnified view of a section at point B in the middle; Figure 10 This is a schematic diagram of a real-time replanting strategy.

[0016] The diagram is labeled as follows: 1. Front housing, 2. Rear housing, 3. Duckbill holder fixing plate, 4. Duckbill holder, 5. Duckbill holder fixing plate drive motor, 6. Bevel gear A, 7. Bevel gear B, 8. Drive mechanism, 9. Transmission shaft, 10. Seed box, 101. Seed leakage hole, 11. Through-beam sensor A, 12. Oriented combing mechanism, 121. Baffle A, 122. Baffle B, 123. Baffle C, 124. Baffle D, 125. Posture limiting gap, 13. Seed feeding mechanism, 14. Seed feeding hole, 15. Negative pressure air inlet, 16. Through-beam sensor B, 17. Seed dispensing disc, 18. Convex adsorption hole, 19. Seed dispensing disc sealing ring, 181. First position, 182. Second position, 183. Third position, 184. Fourth position, 185. Fifth position. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Furthermore, it should be noted that, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "front end," "rear end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of the present invention. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] like Figure 1-10 As shown, a chili seed metering device integrating pneumatic suction mechanical seed metering and photoelectric replanting includes a seed-dispensing housing with a seed-dispensing cavity formed inside. Specifically, the seed-dispensing housing includes a front housing 1 and a rear housing 2. Figure 3 As shown, the outer side of the front housing 1 is provided with a seed box 10 communicating with the seed-dispensing cavity. The seed box 10 is used to hold seeds. The seed-dispensing housing is provided with a seed-dispensing disc 17 and a seed-dispensing mechanism 13. The seed-dispensing housing is provided with seed-dispensing holes 14. Inside the seed-dispensing housing, at the front end of the seed-dispensing disc 17, there is a directional combing mechanism 12 that contacts the seed-dispensing disc 17. The seed-dispensing housing is also provided with a sensing device. The seed-dispensing disc 17 is rotatably set in the seed-dispensing cavity. The seed-dispensing disc 17 is provided with multiple convex adsorption holes 18 along its circumference. The convex adsorption holes 18 are protruding structures higher than the front surface of the seed-dispensing disc 17. Figure 5 As shown, a negative pressure device is provided on the rear housing 2; a drive mechanism 8 for driving the seed metering disc 17 to rotate is provided on the seed metering housing. The seed metering disc 17 is rotatably connected to and driven to rotate by the drive mechanism 8. Specifically, the drive mechanism 8 is connected to the transmission shaft 9. The transmission shaft 9 is rotatably mounted on the front housing 1 and the rear housing 2 respectively through bearings. The transmission shaft 9 rotates independently and does not drive the front housing 1 and the rear housing 2 to produce synchronous movement.

[0021] The negative pressure device includes a negative pressure air inlet 15 on the rear housing 2 and a seed metering disc sealing ring 19 on the inner side of the rear housing 2 and the rear side of the seed metering disc 17. When the negative pressure air inlet 15 is connected to a negative pressure source, a negative pressure environment is formed on the rear side of the seed metering disc 17, and a pressure difference is generated at the convex adsorption hole 18 to adsorb seeds.

[0022] like Figure 4 and Figure 7-9As shown, the directional sorting mechanism 12 includes baffles A 121, B 122, C 123, and D 124 arranged in sequence. A first posture correction seed chamber is formed between baffles A 121 and B 122, a second posture correction seed chamber is formed between baffles B 122 and C 123, and a third posture correction seed chamber is formed between baffles C 123 and D 124. Specifically, a posture-limiting gap 125 is provided between the convex adsorption hole 18 on the seed metering tray 17 and each baffle, allowing seeds in a horizontal position to pass through while blocking seeds in an upright position. When seeds adsorbed by the seed metering tray 17 enter the first posture correction seed chamber in an upright position, they cannot pass through baffle B 122, fall off the seed metering tray 17, and are re-adsorbed in the second posture correction seed chamber. If they are still in an upright position, they cannot pass through baffle C 123. 123, the seeds fall off the seed metering tray 17 and are re-adsorbed in the third posture correction seed bin; when the seeds enter any posture correction seed bin in a lying position, the seeds can pass through smoothly; through the above method, the posture of the adsorbed seeds is uniformly corrected to a lying position.

[0023] The directional sorting mechanism 12 of this invention is coupled with the adsorption process. It addresses the two states of "vertical unstable adsorption" and "flat stable adsorption" that exist in small chili seeds during negative pressure adsorption. By setting directional baffles, it achieves selective control of the adsorption posture. Simultaneously, it can guide vertically upright seeds back to the adsorption area for re-adsorption until they are transformed into a stable flat state before entering the subsequent seed-picking process. Specifically, the vertical adsorption state, due to its smaller contact area, is easily affected by vibration and may fall off during transport; while the flat adsorption state has a larger contact area and a more stable negative pressure retention capacity.

[0024] The seed-dispensing mechanism 13 is fixedly mounted on the lower inner side of the seed-dispensing housing. It includes a small motor and a rotating fan blade mounted on the output shaft of the small motor. The rotating fan blade is used to rotate and strike the chili seeds that arrive at the seed-dispensing station. When the convex adsorption hole 18 carries the adsorbed seeds back to the seed-dispensing station, the seed-dispensing mechanism drives the fan blade to rotate through the small motor, and uses the striking action of the rotating fan blade to dispense the seeds from the convex adsorption hole 18.

[0025] Preferably, the sensing device includes a through-beam sensor A 11 installed on the front side of the seed-dispensing housing and a through-beam sensor B 16 installed on the rear side of the seed-dispensing housing. The two are arranged opposite each other to form a signal penetration point, which is used to detect the adsorption status of seeds in each convex adsorption hole 18. When an empty convex adsorption hole 18 is detected, a seed shortage signal is generated.

[0026] Specifically, the seed metering device also includes a speckle assembly, which includes a speckle fixing plate 3 rotatably mounted on the outside of the seed-dispensing housing and a speckle fixing plate drive motor 5 for driving the speckle fixing plate 3 to rotate. Multiple sets of specks 4 are evenly distributed along the circumference of the speckle fixing plate. When one of the specks 4 rotates to the seed-dispensing hole 14, the seeds passing through the seed-dispensing hole 14 can fall into the speckle 4, which is used to transplant the seeds into the soil. Preferably, this invention uses six sets of specks 4. The speckle fixing plate 3 is powered by the speckle fixing plate drive motor 5, which achieves meshing transmission through a gear pair composed of bevel gear A 6 and bevel gear B 7, thereby driving the speckle fixing plate 3 to operate stably.

[0027] Preferably, the seed metering device also includes a control system, which is electrically connected to the seed dispensing mechanism 13, the negative pressure device, the sensing device and the drive mechanism 8 respectively. When the control system receives the missing seed signal from the sensing device and the marked empty convex adsorption hole 18 moves to the replanting trigger position, it controls the drive mechanism 8 to operate at double speed for a short time to realize automatic replanting.

[0028] This invention also provides a seeding method for chili peppers using the above-mentioned integrated pneumatic-mechanical seeding and photoelectric seeding device, comprising the following steps: S1. The seeds are put into the seed box 10 and enter the seed dispensing shell through the seed leakage hole 101 on the lower side of the seed box 10, and then enter the directional combing mechanism 12.

[0029] S2. Activate the negative pressure device to create a negative pressure environment on the back side of the seed metering tray 17, and the convex adsorption holes 18 on the front side of the seed metering tray 17 adsorb the seeds.

[0030] S3. The driving mechanism 8 drives the seed metering disc 17 to rotate, causing the adsorbed seeds to pass through the posture correction seed bin of the orientation combing mechanism 12 in sequence. Seeds adsorbed in an upright posture are blocked by the baffle and fall off, and are re-adsorbed in the next posture correction seed bin. Seeds adsorbed in a lying posture pass through smoothly, thereby achieving uniform correction of the seed posture to a lying posture.

[0031] S4. The sensing device detects the adsorption status of each convex adsorption hole 18. If an empty convex adsorption hole 18 is detected, a missing seed signal is generated.

[0032] S5. When the control system receives the seed shortage signal, when the marked empty convex adsorption hole 18 moves to the replanting trigger position, the control drive mechanism 8 operates at double speed for a short time, so that the convex adsorption hole 18 with adsorbed seeds located behind the empty convex adsorption hole 18 reaches the replanting position within the same replanting time interval.

[0033] As a preferred option, such as Figure 10As shown, the first point 181 is the signal penetration point of the through-beam sensor A 11 and through-beam sensor B 16, and the fourth point 184 is the seed dispensing point. The first point 181 and the fourth point 184 are set opposite each other along the circumference of the seed dispensing disk 17. When the convex adsorption hole 18 rotates past the first point 181, if the convex adsorption hole 18 has stably adsorbed the seed, the seed will block the light path of the through-beam sensor, and the through-beam sensor cannot receive the through-beam signal. If the convex adsorption hole 18 has not adsorbed the seed, the convex adsorption hole 18 is in a through state, the control system receives the through-beam signal, and determines and marks the convex adsorption hole 18 as a seed-deficient state. At this time, the control... The system generates a replanting strategy in real time. When the convex adsorption hole 18 corresponding to the missing seed moves to the third position 183, the drive mechanism 8 is controlled to operate at double speed for a short time. Within the originally set time interval from the third position 183 to the fourth position 184, the drive mechanism 8 drives the seed dispensing disc 17 to rotate at double speed. The corresponding convex adsorption hole 18 accelerates from the third position 183 to the fifth position 185, so that the second position 182 accurately reaches the fourth position 184 within the same seed dispensing time interval, that is, reaches the seed dispensing point, thereby completing the real-time replanting compensation operation.

[0034] S6. The seed-dispensing mechanism 13 forcibly dispenses the seeds that arrive at the seed-dispensing station. The dispensing seeds fall into the duckbill assembly through the seed-dispensing hole 14 and are finally placed into the field soil through the duckbill assembly 4 to complete the quantitative seed sowing operation.

[0035] The real-time replanting compensation mechanism of the present invention detects the adsorption state of the convex adsorption holes 18 in real time through a sensing device. When a seed shortage is detected, a seed shortage signal is sent to the control system, which generates a replanting strategy in real time and adjusts the rotation speed of the drive mechanism 8 so that the subsequent convex adsorption holes 18 enter the seed dispensing point in advance within the preset seed dispensing time interval. This achieves dynamic compensation for the empty convex adsorption holes 18, realizing the integration of replanting function and seed dispensing. It has advantages such as simplified structure, fast response speed and small space occupation.

[0036] It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A chili seed metering device integrating pneumatic suction mechanical seed metering and photoelectric replanting, comprising a seed-dispensing housing, characterized in that: The seed-dispensing shell forms a seed-dispensing cavity. A seed box communicating with the seed-dispensing cavity is provided on the front side of the seed-dispensing shell. The seed box is used to hold seeds. The seed-dispensing shell is equipped with a seed-dispensing disc and a seed-dispensing mechanism. The seed-dispensing shell is provided with seed-dispensing holes. A directional combing mechanism is located at the front end of the seed-dispensing disc inside the seed-dispensing shell. A sensing device is also provided inside the seed-dispensing shell. The seed-dispensing disc is rotatably set in the seed-dispensing cavity. Multiple convex adsorption holes are provided on the seed-dispensing disc along its circumference. A negative pressure device is provided on the rear side of the seed-dispensing disc. The seed-dispensing shell is equipped with a drive mechanism for driving the seed-dispensing disc to rotate. The directional combing mechanism is used to correct the posture of the seeds in the adsorption state, so that the seeds can maintain a stable flat adsorption posture; the negative pressure device is used to create a negative pressure environment on the back of the seed metering tray, so that the convex adsorption holes on the surface of the seed metering tray can stably adsorb the seeds; the seed picking mechanism is used to pick the seeds off the convex adsorption holes, and the picked seeds are discharged from the seed picking shell through the seed picking holes; the sensing device is used to detect the adsorption status of each convex adsorption hole, and generates a seed shortage signal when an empty convex adsorption hole is detected.

2. The integrated chili seed metering device combining pneumatic suction, mechanical seeding, and photoelectric reseeding as described in claim 1, characterized in that: The directional sorting mechanism includes multiple baffles arranged in sequence, with posture correction seed chambers formed between adjacent baffles. When seeds adsorbed by the seed metering disc enter the posture correction seed chamber in an upright posture, the seeds are blocked by the baffles and cannot pass through, falling off the seed metering disc and being re-adsorbed in the next posture correction seed chamber. When seeds enter the posture correction seed chamber in a lying posture, the seeds can pass through smoothly, thereby uniformly correcting the posture of the adsorbed seeds to a lying posture.

3. The integrated chili seed metering device combining pneumatic suction mechanical seeding and photoelectric reseeding as described in claim 2, characterized in that: The seed metering disc is rotatably connected to and driven by the driving mechanism. The convex adsorption holes on the seed metering disc are raised structures higher than the front surface of the seed metering disc. When the negative pressure environment forms a negative pressure, a pressure difference is generated at the convex adsorption holes to adsorb seeds.

4. The integrated chili seed metering device combining pneumatic suction mechanical seeding and photoelectric reseeding as described in claim 3, characterized in that: The seed-dispensing mechanism is fixed to the lower inner side of the seed-dispensing housing and includes a small motor and a rotating fan blade mounted on the output shaft of the small motor. The rotating fan blade is used to rotate and strike the chili seeds that arrive at the seed-dispensing station to dispense the seeds from the convex adsorption holes.

5. The integrated chili seed metering device combining pneumatic suction mechanical seeding and photoelectric replanting according to claim 4, characterized in that: The sensing device includes a through-beam sensor A installed on the front side of the seed-dispensing housing and a through-beam sensor B installed on the rear side of the seed-dispensing housing. The two are arranged opposite each other to form a signal penetration point, which is used to detect the adsorption status of seeds in each convex adsorption hole. When an empty convex adsorption hole is detected, a seed shortage signal is generated.

6. The integrated chili seed metering device combining pneumatic suction mechanical seeding and photoelectric replanting according to claim 5, characterized in that: It also includes a control system, which is electrically connected to the seeding mechanism, negative pressure device, sensing device and drive mechanism respectively. When the control system receives the seed shortage signal from the sensing device and the marked empty convex adsorption hole moves to the replanting trigger position, it controls the drive mechanism to run at double speed for a short time to realize automatic replanting.

7. The integrated chili seed metering device combining pneumatic suction mechanical seeding and photoelectric reseeding according to claim 6, characterized in that: It also includes a speckle assembly, which includes a speckle fixing plate rotatably disposed on the outside of the seed-dispensing housing and a speckle drive device for driving the speckle fixing plate to rotate. Multiple specks are evenly distributed on the speckle fixing plate along its circumference. When one of the specks rotates to the seed-dispensing hole position, the seeds passing through the seed-dispensing hole can fall into the speckle. The speckle is used to transplant the seeds into the soil.

8. The seeding method of the integrated chili seed metering device combining pneumatic suction mechanical seeding and photoelectric replanting as described in claim 7, characterized in that, Includes the following steps: S1. The chili seeds are introduced into the seed-dispensing shell through the seed box, so that they enter the directional combing mechanism; S2. Activate the negative pressure device to create a negative pressure environment behind the seed metering tray, and the convex adsorption holes on the front of the seed metering tray adsorb the seeds. S3. The driving mechanism drives the seed metering disc to rotate, causing the adsorbed seeds to pass through the orientation correction seed bin of the orientation combing mechanism in sequence. Seeds adsorbed in an upright posture are blocked by the baffle and fall off, and are re-adsorbed in the next orientation correction seed bin. Seeds adsorbed in a lying posture pass through smoothly, thereby achieving uniform correction of the seed posture to a lying posture. S4. The sensing device detects the adsorption status of each convex adsorption hole. If an empty convex adsorption hole is detected, a missing signal is generated. S5. When the control system receives the seed shortage signal, when the marked empty convex adsorption hole moves to the replanting trigger position, the control drive mechanism runs at double speed for a short time, so that the convex adsorption hole with adsorbed seeds located behind the empty convex adsorption hole reaches the replanting position within the same replanting time interval. S6. The seed-dispensing mechanism forcibly dispenses the seeds that arrive at the seed-dispensing station. The dispensed seeds fall into the duckbill assembly, and the seed sowing is completed through the duckbill assembly.

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