CN112690068B - Automatic calibration control system and control method for seeding quantity and fertilizing quantity of precision seeder - Google Patents
Automatic calibration control system and control method for seeding quantity and fertilizing quantity of precision seeder Download PDFInfo
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Abstract
The invention relates to an automatic calibration control system for the seeding rate and the fertilizing rate of a precision seeder, wherein a power component capable of rotating forwards and backwards is provided with power output ends at two sides; one side of the first transmission one-way bearing is connected with the seed and fertilizer discharging component of the operation line, and the other side of the first transmission one-way bearing is connected with the seed and fertilizer discharging component for calibration; the locking direction of the first transmission one-way bearing is opposite to that of the second transmission one-way bearing, and the free rotation direction of the first transmission one-way bearing is opposite to that of the second transmission one-way bearing; a weighing and collecting module is arranged below the seed and fertilizer discharging component; the power component is provided with a speed acquisition module and a seeding stepping driver; the CPU module is used as a control center of the whole control system and is respectively in signal connection with the speed acquisition module, the sowing stepping driver and the weighing acquisition module. The invention adopts an on-line mode for calibration, and has simple and convenient operation. The calibration can be completed in a short time, and the calibration can be completed by one key without manual weighing or manual weighing data input.
Description
Technical Field
The invention relates to a seeder, in particular to an automatic calibration control system and a control method for the seeding rate and the fertilizing rate of a precision seeder.
Background
The calibrated values of the seeding quantity and the fertilizing quantity of the fertilizing and seeding machine have certain deviation with the practical numerical value in practical application.
After a user determines the seeding rate and the fertilizing rate per mu according to the local agricultural requirements, the seeding rate and the fertilizing rate of the seeder are set according to the reference setting given by a seeder manufacturer. In order to achieve a more accurate amount, the actual seed and fertilizer discharge amount of the seeder needs to be calibrated.
Currently, calibration is usually performed as follows: the seeder is stopped on the field, the seeder is in a suspended state by lifting or using a support through a tractor, the working part is not contacted with the ground, the seed metering shaft or the fertilizer discharging shaft uniformly rotates for a certain number of turns at a certain speed, and meanwhile, seeds and fertilizer discharged by the fixed number of turns of rotation of the seed metering device or the fertilizer discharging device are caught under the seed metering part or the fertilizer discharging part, the weight of the seeds or the fertilizer is weighed, the seed metering quantity or the fertilizer discharging quantity of each turn of the seed metering device or the fertilizer discharging device is calculated, and the actual seed metering quantity or the fertilizer discharging quantity of each mu of the seeder is calculated. And comparing the actual seed or fertilizer discharge amount per mu with the target seed or fertilizer discharge amount, and regulating the seeding amount or fertilizing amount of the seeder according to the comparison condition. Generally, the seeding quantity and fertilizing quantity adjusting mechanism is not easy to control the adjusting quantity, so that material receiving weighing is needed again to verify the adjusting accuracy. It can be seen that the calibration process is complicated and inefficient, and the error is large due to manual adjustment. With the precision development of modern agriculture and the intelligent development of agricultural machinery, the existing calibration method of the fertilizing and seeding machine cannot meet the development requirements. In the existing calibration mode, a long time is needed to be spent on calibration work before a machine is used for underground operation, the operation is complex, and time and labor are wasted. As the work of weighing, calculating, adjusting and the like is manually finished, larger errors exist, and the precision requirement of the current agricultural production on the seeding quantity and the fertilizing quantity per mu is higher, the accurate target value can be reached by repeatedly calibrating for several times.
Disclosure of Invention
The invention designs a set of online automatic calibration control system for the seeding rate and the fertilizing rate of the seeder, which is matched with a mechanical device to realize the quick and automatic calibration of the seeding rate and the fertilizing rate on the seeder for seeding and fertilizing driven by a motor, thereby improving the calibration work efficiency, the calibration precision and the operation convenience of the existing seeder.
The invention adopts the following technical scheme:
the utility model provides an automatic control system that calibrates of precision planter seeding volume fertilization volume, includes: the power component capable of rotating forwards and backwards is provided with a double-side power output end; one side of the device is connected with a seed and fertilizer discharging component 1 of an operation line through a first transmission one-way bearing 2, and the other side of the device is connected with a seed and fertilizer discharging component 10 for calibration through a second transmission one-way bearing 4; the locking directions of the first transmission one-way bearing 2 and the second transmission one-way bearing 4 are opposite, and the free rotation directions are opposite; a weighing and collecting module is arranged below the seed and fertilizer discharging component 10; the power component is provided with a speed acquisition module and a seeding stepping driver; the CPU module is used as a control center of the whole control system and is respectively in signal connection with the speed acquisition module, the sowing stepping driver and the weighing acquisition module.
Preferably, the power component is a driving motor 3.
The utility model provides an automatic control system that calibrates of precision planter seeding volume fertilization volume, includes: the power component capable of rotating forwards and backwards is provided with a double-side power output end; one side of the device is connected with the operation row seed and fertilizer discharging component (1) through a first transmission one-way bearing (2), and the other side of the device is connected with a calibration seed and fertilizer discharging component (10) through a second transmission one-way bearing (4); the locking directions of the first transmission one-way bearing (2) and the second transmission one-way bearing (4) are opposite, and the free rotation directions are opposite; a weighing and collecting module is arranged below the seed and fertilizer discharging component (10); the power component is provided with a speed acquisition module and a seeding stepping driver; the CPU module is used as a control center of the whole control system and is respectively in signal connection with the speed acquisition module, the sowing stepping driver and the weighing acquisition module.
Preferably, the power component is a driving motor (3).
The automatic calibration control method for the seeding rate and the fertilizing rate of the precision seeder adopts the automatic calibration control system for the seeding rate and the fertilizing rate of the precision seeder, and comprises the following steps:
s1, input parameters: inputting target seeding quantity and fertilizing quantity at a calibration control terminal;
s2, starting: the seed and fertilizer discharging component (10) is rotated for a set number of turns, the mass of the discharged seeds or fertilizers is weighed, the mass of the seeds or fertilizers discharged by each turn of the average seed or fertilizer discharging component is automatically calculated, and the matching relation between the advancing speed of the seeder and the rotating speed of a seed or fertilizer discharging motor is adjusted;
s3, inoculating, fertilizing and weighing: the control system drives the power component to rotate the power component in the reverse direction, at the moment, the seed and fertilizer discharging component of the operation row does not work, and the seed and fertilizer discharging component of the calibration row works; seeds or fertilizers fall down through the seed and fertilizer discharging components of the calibration rows and enter the lower inoculation fertilizer receiving box (9); weighing the mass of seeds or fertilizers received in the inoculation fertilizer receiving box when the seed and fertilizer discharging component rotates for a set number of turns, and calibrating the seed discharging amount per revolution or the fertilizer discharging amount per revolution;
s4, calculation and adjustment: the control system calculates the value of the seed or fertilizer quality under the set number of rotations, obtains the seed or fertilizer quantity per rotation of the seed and fertilizer discharging component, calculates the proportional relation between the rotating speed of the driving motor and the advancing speed of the machine tool, which are required by the target seed and fertilizer quantity, and adjusts the rotating speed control parameters of the power component during working so as to lead the seed and fertilizer quantity to reach the expected target.
Preferably, the method further comprises step S5: emptying the inoculation and fertilizer receiving box: after the power part stops, the control system sends an instruction to the discharging motor (7), the discharging motor (7) rotates for a set number of turns, the discharging shaft rotates for 180 turns after passing through the discharging gearbox, the weighing sensor and the inoculation fertilizer receiving box rotate together with the discharging shaft, the opening of the inoculation fertilizer receiving box faces downwards, and seeds or fertilizers are discharged; after a period of time, the seeds or the fertilizer are completely discharged, and the control system sends an instruction to the discharging motor (7), so that the discharging motor rotates reversely for the same number of turns, and the system is restored to the initial state. And finishing a work flow and waiting for next calibration.
Preferably, step S3 further includes the following steps:
s3 a: the calibrated seed and fertilizer discharging component rotates for X circles to a stable rotating speed state, and the weighing sensor (8) records the mass of the container and the seeds and records the mass into a cache;
s3 b: after the seed and fertilizer discharging component is controlled to automatically stop for a set time, the seed and fertilizer discharging component is calibrated to be started again to rotate for Y circles at the default rotating speed, and Y is larger than X; weighing the container and the seed mass by a weighing sensor, storing the container and the seed mass into a cache, and subtracting the mass of the previous X circles from the mass to obtain the net mass of the seed discharged by the Y-X circles at a stable rotating speed, wherein the container mass is subtracted from the net mass;
s3 c: the control system divides the net seed mass of the circle of the seed metering device (Y-X) by the net seed mass (Y-X) to obtain the seed metering quantity of 1 circle of the seed metering device, and the seed metering quantity of 1 circle is recorded into a cache.
Further, X is set to 5 and Y is set to 35; the driving motor drives the seed and fertilizer discharging component to rotate for 5 circles and then stop, the system records a weighing value Q1 of the weighing sensor when the seed and fertilizer discharging component rotates for 5 circles, after the system stops for a period of time, the seed and fertilizer discharging component starts again and stops when the system rotates for 35 circles, and the system records a weighing value Q2 of the weighing sensor again; the seed and fertilizer discharging component stably rotates for 30 circles to discharge seeds or fertilizer with the quality Q being Q2-Q1.
Preferably, the method further comprises step S5: emptying the inoculation and fertilizer receiving box: after the driving motor stops, the control system sends an instruction to the discharging motor, the discharging motor rotates for a set number of turns, the discharging shaft rotates for 180 turns after passing through the discharging gearbox, the weighing sensor and the inoculation and fertilizer receiving box rotate together with the discharging shaft, the opening of the inoculation and fertilizer receiving box faces downwards, and seeds or fertilizers are discharged; after a period of time, the seeds or the fertilizer are completely discharged, the control system sends an instruction to the discharging motor, so that the discharging motor rotates reversely for the same number of turns as the set number of turns, and the control system is restored to the initial state.
The invention has the beneficial effects that:
1) the calibration is carried out in an online mode, and the operation is simple and convenient. The calibration can be completed in a short time, and the calibration can be completed by one key without manual weighing or manual weighing data input.
2) The same driving motor can automatically realize the switching between the working state and the calibration state through the change of positive rotation and negative rotation; automatically emptying the inoculation fertilizer receiving box; the weighing, calculating, adjusting and other works are automatically completed, and the accuracy is high;
3) high-precision calibration can be realized through algorithm control, and the influence of unstable rotating speed on the seed metering amount per revolution when the motor starts and stops is eliminated.
4) The inoculation connects fertile box to realize automatic clear up. The high-precision calibration can be realized through algorithm control, and the influence of unstable rotating speed on the seed metering amount per revolution when the motor starts and stops is eliminated.
5) Only needs to be calibrated once, and does not need repeated calibration and verification.
6) The multifunctional seeding and fertilizing machine can be modified on the basis of the existing seeding and fertilizing machine, the functions of the invention are realized by additionally arranging the one-way bearing, the seed and fertilizer discharging component for calibration, the weighing sensor, the inoculating and discharging component and the like, the equipment cost is not obviously increased, the equipment change is small, the implementation is convenient, and the popularization is convenient.
Drawings
FIG. 1 is a front view of an automatic calibrating device for seeding rate and fertilizing rate of a seeder.
FIG. 2 is a hardware structure diagram of the automatic calibration control system for the seeding rate and the fertilizing rate of the precision seeder.
FIG. 3 is a control flow chart of the automatic calibration control method for the seeding rate and the fertilizing rate of the precision seeder.
In the figure, 1, an operation tillage seed and fertilizer discharging component, 2, a first transmission one-way bearing, 3, a driving motor, 4, a second transmission one-way bearing, 5, a discharging shaft, 6, a discharging gearbox, 7, a discharging motor, 8, a weighing sensor, 9, a seed and fertilizer receiving box, 10, a calibration seed and fertilizer discharging component and 11, a driving gearbox are arranged.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Comparative example:
in the prior art, the manual calibration of the purely mechanical transmission type seeder is as follows: the seeder advances a certain distance under the working condition, the seeds or fertilizers arranged are weighed, the seeding amount or the fertilizing amount per mu is calculated, and then the adjustment is tried by changing the transmission ratio. For the precision seeder adopting the motor to drive the seed and fertilizer sowing, the mode of measuring the rotation of the seed and fertilizer sowing part for a certain number of turns, weighing the weight by an electronic scale and manually inputting the weight into a system is adopted. Relatively speaking, the methods all have the steps of manual weighing, inputting and the like, the calibration method is time-consuming and labor-consuming, and calibration needs to be carried out on the ground when each fertilizer or seed is replaced. The mechanical transmission type seeding machine also has the problem of repeated attempts. The calibration process of the precision seeder adopting the motor to drive the seed and fertilizer sowing is as follows: 1. firstly, setting a calibration time and a rotation speed of a seed sowing device in a system, and 2, putting seeds or fertilizers in a sowing or fertilizing channel. 3. Within the set calibration time, the seed sowing device seeds according to the set rotating speed. 4. The seeds or fertilizer discharged from the channel are caught by a pocket. 5. Weighing the seeds and the fertilizer by using an electronic scale. 6. Inputting the number into a human-computer interface, 7, obtaining the quality of the seed metering in each turn of the seed metering device through calculation by a system, and substituting the seed metering quantity in each turn into a control model formula.
The first embodiment is as follows:
referring to fig. 1-3, an automatic calibration control system for the seeding rate and the fertilizing rate of a precision seeder comprises: the power component capable of rotating forwards and backwards is provided with a double-side power output end; one side of the device is connected with a seed and fertilizer discharging component 1 of an operation line through a first transmission one-way bearing 2, and the other side of the device is connected with a seed and fertilizer discharging component 10 for calibration through a second transmission one-way bearing 4; the locking directions of the first transmission one-way bearing 2 and the second transmission one-way bearing 4 are opposite, and the free rotation directions are opposite; a weighing and collecting module is arranged below the seed and fertilizer discharging component 10; the power component is provided with a speed acquisition module and a seeding stepping driver; the CPU module is used as a control center of the whole control system and is respectively in signal connection with the speed acquisition module, the sowing stepping driver and the weighing acquisition module.
Referring to fig. 1, the power unit is a driving motor 3.
The control system is matched with the automatic calibration device for the seeding rate and the fertilizing amount of the precision seeder to realize the control of the mechanical device, thereby realizing the function of rapidly calibrating the seeding rate and the fertilizing amount. The control system has the specific functions:
1. inputting parameters: the seeder needs to be calibrated before formally starting to work, and the seeder is in a stop and non-working state during calibration. And inputting the target seeding amount and fertilizing amount at the calibration control terminal.
2. Starting: and starting a key calibration button to start the calibration system. The calibration principle is that the seed and fertilizer discharging component is rotated for a fixed number of turns, such as 30 turns, the mass of the discharged seeds or fertilizers is weighed, the average mass of the seeds or fertilizers discharged per turn by the seed and fertilizer discharging component is calculated, and then the matching relation between the advancing speed of the seeder and the rotating speed of the seed and fertilizer discharging motor is adjusted, so that the distribution of the seeds on the ground reaches the expected quantity, namely the preset seeding quantity or fertilizing quantity per mu.
3. Inoculating, fertilizer receiving and weighing: the control system drives a driving motor firstly, referring to fig. 1, so that the motor rotates in a reverse direction, at the moment, the seed and fertilizer discharging component of the operation row does not work, and the seed and fertilizer discharging component of the calibration row works. Seeds or fertilizer fall down through the seed and fertilizer discharging components of the calibration row and enter the inoculation fertilizer receiving box below. The seed or fertilizer mass received in the inoculation fertilizer receiving box is weighed when the seed or fertilizer discharging component rotates for a fixed number of turns (for example, 30 turns), and then the seed or fertilizer discharging amount per revolution can be calibrated.
There is this problem here: the existing calibration method is implemented as follows: before the seed and fertilizer discharging component rotates, the container for inoculating and receiving fertilizer is put under the seed and fertilizer discharging component, then the seed and fertilizer discharging component rotates for a fixed number of turns (such as 30 turns) to stop the seed and fertilizer discharging component, after all seeds or fertilizer fall down, the container for inoculating and receiving fertilizer is taken down, and the mass of the seeds or fertilizer in the container is weighed. In fact, the speed of the seed and fertilizer discharging component is unstable in the starting or stopping stage, for example, when the component is started, the speed of the component is accelerated from zero to a stable speed, and an acceleration process (although the time is short) exists, wherein the seed and fertilizer discharging amount in the acceleration process is different from the discharge amount per rotation during the stable rotation. Similar to this at rest. Due to the two stages of starting and stopping, a certain error exists in the inoculation amount in the calibration process. In this embodiment, the control system is designed to intentionally avoid the two stages of starting and stopping when reading the weight, and only calculate the mass of 30 circles when the speed is stable. The design of the control system is to avoid two unstable stages of starting and stopping when the weight is read, and only the mass of 30 circles is calculated when the speed is stable. The implementation mode is as follows: firstly, the calibrated seed and fertilizer discharging component is rotated for 5 circles, wherein the 5 circles comprise the period from starting, a period of speed stabilization time and complete stopping, and the weighing sensor records the mass of the container and the seeds and records the mass into a cache. And then controlling the seed and fertilizer discharging component to automatically stop for a period of time (for example, 3 seconds), then calibrating the seed and fertilizer discharging component to start again to rotate for 35 circles at the default rotating speed, storing the mass of the container and the seeds when the weighing sensor weighs out into a buffer memory, and subtracting the mass of the previous 5 circles from the mass to obtain the net mass of the seeds discharged at the normal rotating speed of 30 circles. The mass of the container is deducted, and the precision error caused by the unstable rotating speed when the motor starts and stops is eliminated. The system automatically divides the net seed mass of 30 circles of the seed metering device by 30 to obtain the seed metering quantity of 1 circle of the seed metering device, records the seed metering quantity of 1 circle into a cache, and automatically substitutes the seed metering quantity into a control model formula.
The specific implementation mode is as follows: the driving motor drives the seed and fertilizer discharging component to rotate for 5 circles and then stops, the system records a weighing value Q1 of the weighing sensor when the seed and fertilizer discharging component rotates for 5 circles, after the system stops for a period of time, the seed and fertilizer discharging component starts again and stops when the system rotates for 35 circles, and the system records a weighing value Q2 of the weighing sensor again. The seed and fertilizer discharging component stably rotates for 30 circles to discharge seeds or fertilizer with the quality Q being Q2-Q1.
4. And (3) calculating and adjusting: the control system calculates the value of Q to obtain the seed or fertilizer quantity per revolution of the seed and fertilizer discharging component, calculates the proportional relation between the rotating speed of the driving motor and the advancing speed of the machine tool, which are required by the target seed and fertilizer discharging quantity, and adjusts the rotating speed control parameters of the seed and fertilizer discharging driving motor during working to enable the seed and fertilizer discharging quantity to reach the expected target.
5. Emptying the inoculation and fertilizer receiving box: in order to continue the calibration work to normally work next time, the inoculation fertilizer receiving box needs to be emptied. After the driving motor stops, the control system sends an instruction to the discharging motor, the discharging motor rotates for a certain number of turns, the discharging shaft rotates for 180 turns after passing through the discharging gearbox, the weighing sensor and the inoculation fertilizer receiving box rotate together with the discharging shaft, the opening of the inoculation fertilizer receiving box faces downwards, and seeds or fertilizers are discharged. After a period of time (for example, 3 seconds), the seeds or the fertilizer are completely discharged, and the control system sends an instruction to the discharging motor, so that the discharging motor rotates reversely for the same number of turns, and the system is restored to the initial state. And finishing a work flow and waiting for next calibration.
The invention adopts an on-line mode for calibration, and has simple and convenient operation. The calibration can be completed in a short time, and the calibration can be completed by one key without manual weighing or manual weighing data input. The same driving motor can automatically realize the switching between the working state and the calibration state through the change of positive rotation and negative rotation. The inoculation and fertilizer receiving box is automatically emptied. High-precision calibration can be realized through algorithm control, and the influence of unstable rotating speed on the seed metering amount per revolution when the motor starts and stops is eliminated.
While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. An automatic calibration control method for the seeding quantity and the fertilizing quantity of a precision seeder is characterized in that:
the automatic calibration control system comprises a power component capable of rotating forwards and backwards and a power output end on two sides; one side of the device is connected with the operation row seed and fertilizer discharging component (1) through a first transmission one-way bearing (2), and the other side of the device is connected with a calibration seed and fertilizer discharging component (10) through a second transmission one-way bearing (4); the locking directions of the first transmission one-way bearing (2) and the second transmission one-way bearing (4) are opposite, and the free rotation directions are opposite; a weighing and collecting module is arranged below the seed and fertilizer discharging component (10) for calibration; the power component is provided with a speed acquisition module and a seeding stepping driver; the CPU module is used as a control center of the whole control system and is respectively in signal connection with the speed acquisition module, the sowing stepping driver and the weighing acquisition module;
the automatic calibration control method comprises the following steps:
s1, input parameters: inputting target seeding quantity and fertilizing quantity at a calibration control terminal;
s2, starting: the seed and fertilizer metering and discharging component (10) for calibration is rotated for set turns, the mass of the discharged seeds or fertilizers is weighed, the mass of the seeds or fertilizers discharged by each turn of the seed and fertilizer metering and discharging component is automatically calculated, and the matching relation between the advancing speed of the seeder and the rotating speed of a seed or fertilizer metering motor is adjusted;
s3, inoculating, fertilizing and weighing: the control system drives the power component to rotate the power component in the reverse direction, at the moment, the seed and fertilizer discharging component of the operation row does not work, and the seed and fertilizer discharging component of the calibration row works; seeds or fertilizers fall down through the seed and fertilizer discharging components of the calibration rows and enter the lower inoculation fertilizer receiving box (9); weighing the mass of seeds or fertilizers received in the inoculation fertilizer receiving box when the seed and fertilizer discharging component rotates for a set number of turns, and calibrating the seed discharging amount per revolution or the fertilizer discharging amount per revolution;
s4, calculation and adjustment: the control system calculates the value of the seed or fertilizer quality under the set number of rotations, obtains the seed or fertilizer quantity per rotation of the seed and fertilizer discharging component, calculates the proportional relation between the rotating speed of the driving motor and the advancing speed of the machine tool, which are required by the target seed and fertilizer quantity, and adjusts the rotating speed control parameters of the power component during working so as to lead the seed and fertilizer quantity to reach the expected target.
2. The automatic calibration control method for the seeding rate and the fertilizing rate of the precision seeder as claimed in claim 1, characterized in that: further comprising step S5: emptying the inoculation and fertilizer receiving box: after the power part stops, the control system sends an instruction to the discharging motor (7), the discharging motor (7) rotates for a set number of turns, the discharging shaft rotates for 180 turns after passing through the discharging gearbox, the weighing sensor and the inoculation fertilizer receiving box rotate together with the discharging shaft, the opening of the inoculation fertilizer receiving box faces downwards, and seeds or fertilizers are discharged; after a period of time, the seeds or the fertilizer are completely discharged, the control system sends an instruction to the discharging motor (7), so that the discharging motor rotates reversely for the same number of turns, the system is restored to the initial state, a working process is completed, and the next calibration is waited.
3. The automatic calibration control method for the seeding rate and the fertilizing rate of the precision seeder as claimed in claim 1, characterized in that:
in step S3, the method further includes the following steps:
s3 a: the calibrated seed and fertilizer discharging component rotates for X circles to a stable rotating speed state, and the weighing sensor (8) records the mass of the container and the seeds and records the mass into a cache;
s3 b: after the seed and fertilizer discharging component is controlled to automatically stop for a set time, the seed and fertilizer discharging component is calibrated to be started again to rotate for Y circles at the default rotating speed, and Y is larger than X; weighing the container and the seed mass by a weighing sensor, storing the container and the seed mass into a cache, and subtracting the mass of the previous X circles from the mass to obtain the net mass of the seed discharged by the Y-X circles at a stable rotating speed, wherein the container mass is subtracted from the net mass;
s3 c: the control system divides the net seed mass of the circle of the seed metering device (Y-X) by the net seed mass (Y-X) to obtain the seed metering quantity of 1 circle of the seed metering device, and the seed metering quantity of 1 circle is recorded into a cache.
4. The automatic calibration control method for the seeding rate and the fertilizing rate of the precision seeder as claimed in claim 3, characterized in that: the X is set to be 5, and the Y is set to be 35; the driving motor drives the seed and fertilizer discharging component to rotate for 5 circles and then stop, the system records a weighing value Q1 of the weighing sensor when the seed and fertilizer discharging component rotates for 5 circles, after the system stops for a period of time, the seed and fertilizer discharging component starts again and stops when the system rotates for 35 circles, and the system records a weighing value Q2 of the weighing sensor again; the seed and fertilizer discharging component stably rotates for 30 circles to discharge seeds or fertilizer with the quality Q being Q2-Q1.
5. The automatic calibration control method for the seeding rate and the fertilizing rate of the precision seeder as claimed in claim 1, characterized in that:
further comprising step S5: emptying the inoculation and fertilizer receiving box:
after the driving motor stops, the control system sends an instruction to the discharging motor, the discharging motor rotates for a set number of turns, the discharging shaft rotates for 180 turns after passing through the discharging gearbox, the weighing sensor and the inoculation and fertilizer receiving box rotate together with the discharging shaft, the opening of the inoculation and fertilizer receiving box faces downwards, and seeds or fertilizers are discharged;
after a period of time, the seeds or the fertilizer are completely discharged, the control system sends an instruction to the discharging motor, so that the discharging motor rotates reversely for the same number of turns as the set number of turns, and the control system is restored to the initial state.
6. The automatic calibration control method for the seeding rate and the fertilizing rate of the precision seeder as claimed in claim 1, characterized in that: the power component is a driving motor (3).
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