CN114543910A

CN114543910A - Seed metering flow detection device

Info

Publication number: CN114543910A
Application number: CN202210201237.0A
Authority: CN
Inventors: 胡建平; 严萌; 刘伟; 刘育彤; 姚梦娇
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-05-27

Abstract

The invention discloses a seed metering flow detection device which is provided with a detection channel part, wherein 10 detection channel partition plates are uniformly arranged in the detection channel part, the detection channel part is uniformly divided into 11 detection sub-channels with equal width by the 10 detection channel partition plates, one end surface of the detection channel part is provided with corresponding emitting element mounting ports corresponding to the 11 detection sub-channels, the emitting element mounting ports are provided with photoelectric sensor emitting ends, the other end surface of the detection channel part is provided with corresponding receiving element mounting ports corresponding to the 11 detection sub-channels, the receiving element mounting ports are provided with photoelectric sensor receiving ends, and the receiving end of the detection sub-channels is provided with a signal processing element. Through setting up the detection channel part, the seed after the dispersion gets into each passageway at random, forms the intermittent type seed flow that has obvious interval between the seed, has solved a seed of traditional photoelectric sensor and has sheltered from many monitoring light's problem simultaneously.

Description

Seed metering flow detection device

Technical Field

The invention relates to the technical field of seeding flow detection, in particular to a seed metering flow detection device.

Background

The traditional seeder drives the seed sowing shaft by a land wheel through chain transmission, and under the actual working condition, due to the reasons of soil mud, high stubble coverage rate and the like, the land wheel slips, so that the problems of re-sowing and missed sowing are caused. Aiming at the technical problems, the intelligent regulation and control of the seeding flow during seeding are needed in the field of agricultural machinery.

In the prior art, sensors for detecting the seeding flow mainly include the following three types: piezoelectric, capacitive, and photoelectric. The piezoelectric sensor has good dust resistance, but the impact of the seeds and the piezoelectric film can cause rebound, so that the same seed can be detected for multiple times; the capacitive sensor is sensitive to the seed number, so that the rebroadcasting and miss-seeding of the seeds can be effectively judged, but the initial value of the capacitive sensor changes along with the temperature, so that the monitoring error is caused; the photoelectric sensor is widely applied due to sensitive reaction and low cost; when the light beam is blocked by the seed, the output signal of the sensor changes. Aiming at large-kernel crops with a single-seed precision sowing mode, the method comprises the following steps: corn, broad bean and the like, and the detection accuracy is higher; for the grain drilling of wheat, rice and the like, the seeds discharged by the seed sowing device are continuous and dense particle flows, the phenomenon of overlapping frequently occurs at the seed falling pipe detection position, the accurate detection is difficult, the conventional monitoring sensor can only be used for alarming after the seed flow is blocked, and the defects that the overlapping seeds cannot be monitored by a few sensors with flow detection functions and the like exist.

The invention patent with the prior publication number of CN109931887B discloses a seed discharge flow detection system, which can disperse continuous and dense seed flows into seed monomers through the arrangement of a front discrete plate and a rear discrete plate, and the seed monomers uniformly fall into each detection sub-channel, thereby reducing the detection error caused by the overlapping of seeds.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a seed metering flow detection device, scattered seeds randomly enter each channel by arranging a detection channel part to form intermittent seed flows with obvious intervals among the seeds, so that the effect of seed flow reconstruction is realized, the technical problem that a plurality of seeds are easily clamped at the opening of each detection sub-channel in the width direction is solved, the problem that one seed of a traditional photoelectric sensor simultaneously shields a plurality of monitoring light rays is also solved, and the condition that a certain light ray is simultaneously shielded by a plurality of seeds is also avoided.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a seed metering flow detection device comprises a device main body, wherein the device main body comprises a left main body and a right main body which are bilaterally symmetrical, a seed inlet pipe is arranged above the device main body, a first discrete plate is arranged on the lower side of the seed inlet pipe and the inner side surface of the device main body, and a second discrete plate is arranged on the inner top surface and the inner side surface of the device main body; set up the detection channel part under the second discrete board, the inside of detection channel part has evenly set up 10 detection channel baffles, 10 detection channel baffles will detection channel part has evenly been divided into 11 detection subchannels that are equal wide, a terminal surface of detection channel part corresponds 11 detection subchannels and has seted up corresponding transmitting element installing port, the photoelectric sensor transmitting end is installed to the transmitting element installing port, another terminal surface of detection channel part corresponds 11 detection subchannels and has seted up corresponding receiving element installing port, the photoelectric sensor receiving terminal is installed to the receiving element installing port, the receiving terminal that detects the subchannel is provided with signal processing component.

Further, the thickness of the detection channel partition plate is 2mm, a chamfer is formed in the top surface of the detection channel partition plate, the chamfer is 60 degrees, and the width of the detection sub-channel is 7 mm.

Further, the signal processing element performs cyclic scanning on the 11 detection sub-channels, converts the scanning result into the number of the seed falling particles, and uploads and displays the seed falling particles.

Further, first discrete board and second discrete board are circular-arcly, first discrete board radius is 65-70mm, first discrete board inclination is 50-65 degrees, second discrete board radius is 80-95mm, second discrete board inclination is 50-70 degrees.

Further, the left body and the right body comprised by the device main body can be integrally formed and installed into a whole by 4 installation tables.

Further, a seed discharging pipe is arranged at the lower end of the device main body.

(III) advantageous effects

Compared with the prior art, the invention provides a seed metering flow detection device, which has the following beneficial effects:

1. through setting up the test channel part, the seed after the dispersion gets into each passageway at random, forms the intermittent kind of a class that has obvious interval between the seed to realize the effect that kind class flows the reconstruction, 60 chamfers 708 are seted up to the top surface of test channel baffle 701, more do benefit to falling into of seed, avoided many seeds to block easily at each test sub-channel mouth on width direction.

2. Through the research to the seed sample, detect subchannel 701 width and select to be 7mm, detect passageway baffle 701 thickness and be 2mm, adopt above-mentioned structural parameter, no matter with what kind of gesture whereabouts of seed, on the width direction, only a seed can fall into the passageway at every turn, has improved the detection precision.

Drawings

FIG. 1 is a perspective view of a main body of a seed metering flow rate detecting device according to the present invention;

FIG. 2 is a schematic view of the internal structure of a seed metering flow rate detecting device according to the present invention;

FIG. 3 is a schematic view of a detection channel part of a seed metering flow rate detection device according to the present invention;

FIG. 4 is a sectional view taken along line A-A of a seed metering flow rate detecting device according to the present invention;

in the figure: 1. a left main body; 2. a right main body; 3. mounting a boss; 4. feeding a seed pipe; 5. a first discrete plate; 6. a second discrete plate; 7. a detection channel part; 701. a detection channel partition plate; 702. detecting the subchannel; 703. a transmitting element mounting port; 704. a photoelectric sensor emitting end; 705. a receiving component mounting port; 706. a photoelectric sensor receiving end; 707. a signal processing element; 708. and (6) chamfering.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a seed metering flow rate detection device comprises a device main body, the device main body comprises a left main body 1 and a right main body 2 which are bilaterally symmetrical, the left main body 1 and the right main body 2 which are comprised by the device main body can be integrally formed, the left main body 1 and the right main body 2 are combined and installed into a whole through 4 installation bosses 3, and a seed metering pipe 8 is arranged at the lower end of the device main body. A seed inlet pipe 4 is arranged above the device main body, a first discrete plate 5 is arranged on the lower side of the seed inlet pipe 4 and the inner side surface of the device main body, a second discrete plate 6 is arranged on the inner top surface and the inner side surface of the device main body, the first discrete plate 5 and the second discrete plate 6 are both arc-shaped, the radius of the first discrete plate 5 is 65-70mm, the inclination angle of the first discrete plate 5 is 50-65 degrees, the radius of the second discrete plate 6 is 80-95mm, and the inclination angle of the second discrete plate 6 is 50-70 degrees; a detection channel part 7 is arranged right below the second discrete plate 6, 10 detection channel partition plates 701 are uniformly arranged inside the detection channel part 7, the thickness of each detection channel partition plate 701 is 2mm, the top surface of each detection channel partition plate 701 is provided with a chamfer 708, the chamfer 708 is 60 degrees, and the width of each detection sub-channel 702 is 7 mm; the 10 detection channel partition boards 701 uniformly divide the detection channel part 7 into 11 detection sub-channels 702 with equal width, one end face of the detection channel part 7 is provided with corresponding emission element mounting ports 703 corresponding to the 11 detection sub-channels 702, the emission element mounting ports 703 are provided with photoelectric sensor emission ends 704, the other end face of the detection channel part 7 is provided with corresponding receiving element mounting ports 705 corresponding to the 11 detection sub-channels 702, the receiving element mounting ports 705 are provided with photoelectric sensor receiving ends 706, and the receiving ends of the detection sub-channels 702 are provided with signal processing elements 707; the signal processing component 707 performs cyclic scanning on the 11 detection sub-channels 702, converts the scanning result into the number of seed particles, and uploads and displays the seed particles.

The working principle of the above embodiment is as follows:

the seed discharging flow detection device is positioned at a seed outlet of a seeder, when in use, seeds enter a device main body from a seed inlet pipe 4, the flow direction of the seeds sequentially collides with a first discrete plate 5 and a second discrete plate 6 which are arranged in a staggered way to uniformly disperse the seeds onto a detection channel part 7, the overlapping probability of the seeds passing through monitoring light is reduced, because the detection channel part 7 consists of detection sub-channels 702 with equal width, each detection sub-channel 702 is separated by a detection channel partition plate 701, in order to prevent a plurality of seeds from falling into the same channel side by side in the width direction, the width of a single channel is larger than the average length of the seeds and smaller than twice of the average thickness of the seeds, through research, the average three-dimensional size of a seed sample is 6.17mm, 3.58mm and 2.98mm, the width of the detection sub-channel 701 is selected to be 7mm, the thickness of the detection channel partition plate 701 is 2mm, the top surface of the detection channel partition plate 701 is provided with a chamfer 708, the chamfer 708 is 60 degrees, the width of the detection sub-channel 702 is 7mm, by adopting the above structural parameters, no matter what posture the seeds fall, in the width direction, only one seed can fall into each channel at each time, each channel is provided with monitoring light which is respectively emitted to the photoelectric sensor receiving end 706 from the photoelectric sensor emitting end 704, if no seed blocks the light, the photoelectric sensor receiving end 706 receives the light, the output of the light is low level, if the light is blocked by the seed, the photoelectric sensor receiving end 706 outputs high level, the signal processing element 707 circularly scans each detection sub-channel 702 and converts the scanning result into the number of the seed falling particles, when the sampling period is reached, the number of the detected particles is uploaded to the display device, and the dispersed and detected seeds are discharged from the seed discharge tube 8.

In view of the above, it is desirable to provide,

1. through setting up the test channel part, the seed after the dispersion gets into each passageway at random, forms the intermittent kind of a class that has obvious interval between the seed to realize the effect that kind class flows the reconstruction, 60 chamfers 708 are seted up to the top surface of test channel baffle 701, more do benefit to falling into of seed, solved many seeds and blocked the technical problem at each test sub-channel mouth easily on width direction.

2. Through the research to the seed sample, detect subchannel 701 width and select to be 7mm, detect passageway baffle 701 thickness and be 2mm, adopt above-mentioned structural parameter, no matter with what kind of gesture whereabouts of seed, on the width direction, only a seed can fall into the passageway at every turn, has improved the detection precision. Therefore, the problem that one seed of the traditional photoelectric sensor simultaneously shields a plurality of monitoring light rays is solved, and the condition that a certain light ray is simultaneously shielded by a plurality of seeds is also avoided.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. The utility model provides a seed metering flow detection device, includes the device main part, its characterized in that: the device main body comprises a left main body (1) and a right main body (2) which are bilaterally symmetrical, a seed inlet pipe (4) is arranged above the device main body, a first discrete plate (5) is arranged on the lower side of the seed inlet pipe (4) and the inner side surface of the device main body, and a second discrete plate (6) is arranged on the inner top surface and the inner side surface of the device main body; a detection channel component (7) is arranged right below the second discrete plate (6), 10 detection channel clapboards (701) are uniformly arranged inside the detection channel component (7), the 10 detection channel clapboards (701) divide the detection channel component (7) into 11 detection sub-channels (702) with equal width, one end surface of the detection channel component (7) is provided with corresponding emitting element mounting openings (703) corresponding to the 11 detection sub-channels (702), a photoelectric sensor emitting end (704) is arranged on the emitting element mounting opening (703), the other end surface of the detection channel part (7) is provided with corresponding receiving element mounting openings (705) corresponding to the 11 detection sub-channels (702), a photoelectric sensor receiving end (706) is arranged on the receiving element mounting opening (705), and a signal processing element (707) is arranged at the receiving end of the detection sub-channel (702).

2. A seed metering flow rate detecting device according to claim 1, characterized in that: the thickness of the detection channel partition plate (701) is 2mm, a chamfer (707) is formed on the top surface of the detection channel partition plate (701), the chamfer (707) is 60 degrees, and the width of the detection sub-channel (702) is 7 mm.

3. A seed metering flow rate detecting device according to claim 1, characterized in that: and the signal processing element (707) circularly scans the 11 detection sub-channels (702), converts the scanning result into the number of the seed falling particles, and uploads and displays the seed falling particles.

4. A seed metering flow rate detecting device according to claim 1, characterized in that: the first discrete board (5) and the second discrete board (6) are circular-arc, the radius of the first discrete board (5) is 65-70mm, the inclination angle of the first discrete board (5) is 50-65 degrees, the radius of the second discrete board (6) is 80-95mm, and the inclination angle of the second discrete board (6) is 50-70 degrees.

5. A seed metering flow rate detecting device according to claim 1, characterized in that: the device main body comprises a left main body (1) and a right main body (2) which can be integrally formed, wherein the left main body (1) and the right main body (2) are combined and installed into a whole through 4 installation platforms (3).

6. A seed metering flow rate detecting device according to claim 1, characterized in that: the lower end of the device main body is provided with a seed discharging pipe (8).