CN209745575U

CN209745575U - Automatic seed leakage detection device of dibbler

Info

Publication number: CN209745575U
Application number: CN201920873952.2U
Authority: CN
Inventors: 王龙; 邢剑飞; 贺小伟; 胡灿; 刘亚明; 李鸿
Original assignee: Tarim University
Current assignee: Tarim University
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2019-12-06
Anticipated expiration: 2029-06-12

Abstract

The utility model discloses an automatic detection device for seed leakage of a hole sowing device, which mainly comprises a light curtain sensor, a light curtain sensor support, a proximity sensor, a control box and the like. The seed leakage rate detection device of the hill planter is mainly used by matching a light curtain sensor and a proximity sensor with a seed leakage detection rack. Its light curtain sensor support mounting is under the dibbler, and the light curtain sensor aims at dibbler seed metering mouth response seed whereabouts and takes notes actual seed metering number of times, and proximity switch sensor is connected with the depression bar and is used for responding to the seed metering mouth and opens the number of times, and this kind of detection device that leaks kind can effectively replace several artifical observations dibblers rate of leaking kind, can not only improve mill's detection efficiency and can also ensure detection stability to detect the dibbler rate of leaking kind, guarantee the qualification rate of leaving the factory of dibbler.

Description

automatic seed leakage detection device of dibbler

Technical Field

The invention belongs to the field of agricultural seeding device detection, is suitable for seed leakage detection and delivery qualification rate detection of agricultural precision dibblers for cotton and corn, and relates to an automatic seed leakage detection device for a dibbler.

Background

The precision seeder is more and more advanced and perfect in development, is popular with broad farmers, and brings higher economic benefit to the farmers, but the precision seeder has some inevitable defects in the design of a seed sowing system, and the defects cause some seed leakage phenomena of the precision seeder. The whole body of the precision seeder adopts a fully-closed structure, the design leads to the situation that the seed leakage phenomenon cannot be found by an operator in time, and then the operator cannot perform the reseeding in time, and after the seedling emergence, a manual reseeding or manual transplanting method is needed to be adopted, so that the time and the labor are wasted. The precise sowing equipment is developed from the end of 20 th century in China, compared with detection systems in other aspects, the detection system in the aspects of controlling missed sowing is slower in development than that in western countries, most manufacturers producing dibblers use test benches to perform manual detection on a plurality of processes, the production rate level is lower, the competitive requirements of modern social markets can not be met obviously, Xinjiang serves as the province for cotton and corn planting in China, the planting area of Xinjiang cotton reaches 2217.47 kilohectares in 2018, the seeding area of Xinjiang cotton occupies 69.4% of the cotton sowing area in China, the planting area of corn reaches 1126.8 kilohectares, and the cotton and the corn both need to be sowed with precise quantities, so the automatic detection device for missed sowing of the dibblers is indispensable to be applied. In the existing hill planter seed leakage detection device, a computer vision method is adopted; it is a product of a combination of computer technology and image technology. The monitoring principle can be summarized as follows: the camera is fixed in a close range, a plurality of moving targets are monitored, monitored contents comprise rebroadcasting, miss-seeding, variation coefficient, seeding quantity and the like of seeds, but detection conditions are high, the requirement on the rotating speed of the hill-drop planter is high, and the visual detection precision is not high. A capacitive method; the principle is that when a seed flow falls from a seed discharging port and passes through a capacitive sensor arranged on a seed discharging pipe, the equivalent dielectric constant of a medium between sensor polar plates is changed, so that the capacitance value of the sensor is changed, the performance index of the seed discharging pipe is evaluated by taking the change of the capacitance value as a research basis, the sensor has the advantages of strong environmental adaptability and small change of the capacitance value, has higher requirement on the sensitivity of the sensor for larger seeds such as corn, and needs to be optimized and improved at present. A photoelectric method; and detecting the performance of the seed metering device according to the falling time interval of the seeds. The system can quickly obtain a detection result, but the falling seeds can pass through a monitoring area of the photoelectric sensor only on the premise of installing the seed discharging pipe, the method does not fully consider comprehensive factors influencing the falling of the seeds, and in addition, the falling speed of the seeds is high in the seed discharging process, and the falling path is easily influenced by friction or collision, so the detection error is larger.

Disclosure of Invention

Aiming at the problems, the invention provides an automatic seed leakage detection device of a hole sowing device, which can overcome factors such as detection environment, seed size and the like, can quickly detect holes, and has high stability of re-sowing and seed sowing quantity and small detection error.

To achieve the above object, the present invention provides the following embodiments:

an automatic detection device for seed leakage of a dibbler comprises a frame provided with a base, wherein the frame is respectively provided with a main speed regulating motor, an auxiliary speed regulating motor, a control box and a conveying belt, the middle part of the frame is provided with a vertically arranged support, the top end of the support is provided with the dibbler through a bearing seat, the end part of a rotating shaft of the dibbler is driven by the auxiliary speed regulating motor arranged below the support through a chain wheel and a chain to rotate, the frame at the front lower part of the dibbler is horizontally provided with a pressure rod, the bottom surface of the inner side end of the pressure rod is provided with a proximity switch sensor, the top surface of the free end of the pressure rod is contacted with the force application end of a duck tongue baffle of the dibbler, the frame positioned below a seed sowing port of the dibbler at the support is provided with a light curtain sensor, four corners of the light curtain sensor are respectively provided with a support, the light curtain sensor is in a, the conveyer belt is driven by the main speed regulating motor who installs in frame one end below and is rotatory, proximity switch sensor and light curtain sensor all be linked together with the singlechip in the control box.

The invention mainly comprises a light curtain sensor, a light curtain sensor bracket, a proximity switch sensor and a control box, and is matched with an experiment bench for use; wherein the hill planter is arranged on a support of the experiment bench, and the support is arranged and fixed on two sides of a rack of the experiment bench; a light curtain sensor is arranged right below the hole of the hill-drop planter and is arranged on two sides of the conveying belt of the experiment bench through a bracket; the proximity switch sensor is arranged at a blocking rod below the hill planter, the conveying belt is arranged below the light curtain sensor, an auxiliary speed regulating motor for driving the hill planter is fixed with the rack below the conveying belt, a main speed regulating motor for driving the conveying belt is matched with a conveying belt shaft through a sprocket on the right side of the experiment bench, the control box is arranged on the left side of the experiment bench and can adjust the position, and the sensor and the two motors are controlled; compared with the prior art, the invention has the following advantages:

(1) the light curtain sensor has strong anti-interference capability, large measuring range and high precision, can adjust the measuring range and the induction reaction time of seeds with different sizes, and has high stability and applicability.

(2) The light curtain sensor support can adjust all around, and the play seed outlet of different dibblers is inequality to have its export size position such as duckbilled formula, shovel formula, sharp mouth formula all inequality, can be according to the kind of dibbler through adjusting the position of light curtain sensor support in the frame, then adjusts the position of light curtain sensor, and it is convenient to adjust, convenient being suitable for.

(3) The control box can adjust the rotating speed of the conveying belt and the rotating speed of the dibbler, and the inspection and the evaluation of the factory qualification rate of the dibbler when different rotating speeds are met.

(4) The control box is provided with a display, can effectively display the seed sowing times, the empty hole number, the actual seed sowing number, the repetition number and the seed leakage rate, and is simple and clear.

the working process of the invention is realized in this way;

The light curtain sensor and the proximity switch sensor transmit data to the control box through induction connecting data lines, a single chip microcomputer in the control box converts the data according to signals transmitted back by the light curtain sensor and the proximity switch sensor respectively, the signals in the light curtain sensor can be converted into actual detection seed metering times, reseeding times and empty hole numbers according to detection states, the signals of the proximity switch sensor are only converted into the seed metering times, and the actual detection seed metering times and the seed metering times are subjected to ratio calculation to obtain the hole rate after operation.

Before the operation, firstly, the type of the hill-drop planter is selected, seeds are put into the hill-drop planter, then the position of the light curtain sensor is adjusted, a seed discharging port is opposite to the detection port of the light curtain sensor, after the adjustment is finished, a power supply is turned on through the control box, the rotating speed of the hill-drop planter and the rotating speed of the conveying belt are adjusted, the control box serves as a control system, the rotation speed adjusting knob of the conveying belt and the rotating speed adjusting knob of the hill-drop planter can respectively control the starting, the closing, the forward and reverse rotation and the adjustment of different speeds of two motors, the motor in the middle rotates to drive the chain wheel connected with the motor to rotate, the chain wheel connected with a shaft is driven to drive the hill-drop planter to rotate through a pressing rod, a proximity switch sensor on the pressing rod counts the times, the seed discharging times are transmitted to the control box to be displayed by a display unit, and the, realize the seeding, drop light curtain sensor detection area, the light curtain sensor utilizes infrared ray sensing (light curtain transmitter and receiver), and sensitivity and detection interval are all adjustable, and when the seed passed through, can hinder and shelter from infrared receiving, through losing data transmission behind the response, thereby carry out the demonstration of actual seed metering number of times through the operation of singlechip. The motor on the side rotates to drive the chain wheel to rotate, and the shaft is driven to rotate through the chain wheel and the chain, so that the conveying belt rotates. The transmission belt transmits the seeds, so that the seeds are not easy to accumulate below the dibbler. After seeding is finished, the seed leakage rate and the number of empty holes can be calculated by the single chip microcomputer and then displayed on a display of the control box, whether the detected hole sowing device reaches the factory standard or not can be judged, and the control box can be reset to carry out the next detection operation after the detection is finished. The seed leakage detection system realizes accurate and stable detection mainly through the cooperation and the operation of the light curtain sensor, the proximity switch sensor and the single chip microcomputer in the control box, guarantees the quality and the efficiency of detection, and determines whether the factory dibbler is qualified.

Drawings

The present invention will be described in further detail below with reference to the accompanying drawings.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a logic diagram of a control program according to the present invention.

Detailed Description

the utility model provides an automatic checkout device that dibbler leaks kind, as shown in fig. 1, fig. 2, including the frame 6 of installing base 12, be equipped with main buncher 7, vice buncher 10 and control box 11, conveyer belt 14 on the frame 6 respectively, the frame middle part is setting up vertical arrangement's support 3, and 3 tops of support are setting up a dibbler 1 through the bearing frame, and dibbler 1 pivot tip passes through sprocket 2 and chain 8 and is driven the rotation by the vice buncher 10 of installing in the support below. A press rod 4 is horizontally arranged on a rack below the front of a hill planter 1, a proximity switch sensor 5 is arranged below the bottom surface of the inner side end of the press rod 4, the top surface of the free end of the press rod 4 is contacted with the force application end of a duck tongue baffle of the hill planter, a light curtain sensor 9 is arranged on the rack below a seed discharging port of the hill planter at a support seat, four corners of the light curtain sensor 9 are respectively provided with a support 13, and the relative position between the light curtain sensor 9 and the seed discharging port of the hill planter can be adjusted by adjusting the position of the light curtain sensor support 13 on the rack 6 according to the type of the hill planter. Light curtain sensor 9 is the font of returning, and the seed falls from the detection mouth at light curtain sensor 9 center, and light curtain sensor 9 is located conveyer belt 14 top, and conveyer belt 14 is driven rotatoryly by installing main buncher 7 in frame one end below, proximity switch sensor 5 and light curtain sensor 9 all be linked together with the singlechip in the control box 11. Fig. 3 is a logic block diagram of a control program according to the present invention, and according to the logic block diagram, a person skilled in the art can select familiar components to configure related circuits, so as to conveniently achieve the object of the present invention.

Claims

1. The utility model provides an automatic checkout device that seed leaks of dibbler, is equipped with main, vice buncher and control box, conveyer belt, characterized by respectively including the frame of installing the base in the frame: the middle part of the frame is provided with a vertically arranged support, the top end of the support is provided with a dibbler through a bearing seat, the end part of a rotating shaft of the dibbler is driven by an auxiliary speed regulating motor arranged below the support to rotate through a chain wheel and a chain, a press rod is horizontally arranged on a rack below the front part of the hill planter, a proximity switch sensor is arranged below the bottom surface of the inner side end of the press rod, the top surface of the free end of the press rod is contacted with the force application end of a duck tongue baffle of the hill planter, a light curtain sensor is arranged on the rack below a seed discharging port of the hill planter at the support, four corners of the light curtain sensor are respectively provided with a bracket, the light curtain sensor is shaped like a Chinese character 'hui', seeds fall from a detecting port at the center of the light curtain sensor, the light curtain sensor is positioned above a conveyor belt, the conveyor belt is driven to rotate by a main speed regulating motor arranged below one end of the rack, the proximity switch sensor and the light curtain sensor are communicated with a single chip microcomputer in the control box.