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Variable pesticide spraying system and control method thereof

A variable and control system technology, applied in the field of variable spraying system and its control, can solve the problems of affecting the spray effect and reducing the service life of the solenoid valve, and achieve the effects of saving manpower and material resources, improving safety and high precision

Active Publication Date: 2019-03-19
JILIN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PWM type has extremely strict requirements on the frequency of the system. High frequency will reduce the service life of the solenoid valve, and low frequency will affect the spray effect.

Method used

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  • Variable pesticide spraying system and control method thereof
  • Variable pesticide spraying system and control method thereof
  • Variable pesticide spraying system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, a variable spraying system includes a spraying device, an image acquisition and processing system, a variable spraying control system, a monitoring system and a power supply system 27;

[0041] The spraying device is installed on the spraying test bench, including a medicine box 1, a spraying pipeline, a filter 3, a medicine pump 4, a pressure gauge 5, a safety valve 6, a distributor 10, a solenoid valve 11 and a nozzle 12; The medicine box 1 is placed on the ceiling, and the medicine box is connected to the spraying pipeline and the return pipeline. The medicine box 1 is connected to the medicine pump 4 through the filter 3. The water outlet of the medicine pump 4 is divided into two ways, and one way passes through The pressure gauge 5 and the safety valve 6 flow back to the medicine box 1, and the other way is injected into one end of the spraying pipeline, and the other end of the spraying pipeline is connected with the distributor 10, and...

Embodiment 2

[0052] A variable spraying control method, the specific steps are as follows:

[0053] Step 1: Set the PID parameter (Kp, Ki, Kd) population in the variable spraying control system (PID parameter population means a group of individuals, each individual is a set of parameter values ​​(Kp, Ki, Kd)), Kp is The proportional coefficient, Ki is the integral coefficient, Kd is the differential coefficient, and the initial population is randomly generated. The population size M (the size of the population is usually between 10-50, depending on the actual optimization effect of the actual problem) is set to 30, and the maximum evolution The algebra T is set to 100, and the value ranges of Kp, Ki, and Kd are respectively set to [0,100], [0,20], [0,5];

[0054] Step 2: According to the decision-making information of the image acquisition and processing system, input the decision spraying amount in the variable spraying control system;

[0055] Step 3: Construct the fitness function F ac...

Embodiment 3

[0067] A variable spraying control method, the specific steps are as follows:

[0068] Step 1: Randomly generate PID parameter initialization population, population size M=30, namely [Kp, Ki, Kd]=[58.6804, 15.8944, 2.6784; 86.8328, 8.3480, 3.1281; 53.5777, 3.7928, 4.0420; 46.9795,10.1466,1.2366;44.6921,1.7009,3.9687;60.8798,6.2561,2.0723;7.5660,7.1945,0.1222;31.7595,10.7722,1.4272;80.2346,4.9658,2.5660;42.1408,13.1769,1.8719;57.5367,6.7253,4.6921;46.0997, 8.6217,0.8798;24.1935,19.6481,0.2933;78.9150,8.9932,4.0371;27.5367,15.5425,3.8465;53.6657,1.3490,1.4027;51.9062,5.9238,2.4731;19.0909,10.8504,1.4956;29.0323,12.5318,4.6432;42.1408,17.1848, 1.1193;28.9443,4.8876,3.5533;17.7713,8.3871,0.2688;64.6628,12.9423,4.0909;19.4428,10.4985,2.1261;66.7742,6.4712,0.1955;26.7449,4.4184,1.6471;89.0323,16.0899,3.6755;27.4487,13.9198,4.7898; 77.9472, 15.4839, 2.7468], set the maximum evolution algebra T = 100;

[0069] Step 2: According to the decision-making information of the image acquisi...

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Abstract

The invention discloses a variable pesticide spraying system and a control method thereof, and belongs to the technical field of variable pesticide spraying. The invention provides a variable pesticide spraying intelligent system based on a trimmed mean adaptive genetic PID (Proportion-Integral-Derivative) control algorithm. The system collects farmland weed information by utilizing an image processing technology, and obtains a decision pesticide spraying amount according to a rapid processing algorithm; the system adopts the truncated mean adaptive genetic PID control algorithm to adaptivelyfind an optimal control parameter; and the system outputs the control voltage according to the difference between the actual spraying amount and the decision spraying amount to control the opening degree of an electric valve, so that the accurate and rapid control of the pesticide spraying amount is realized, and monitoring the system pressure, liquid level and flow information can be completed. According to the system, from the collection of the image information to the completion of variable pesticide spraying operation, manual judgment is not required, so that the manpower and material resources are saved, system response speed is high, the pesticide spraying control error is small, the accuracy is high, the pesticide waste and pollution to ecological environment are reduced, and safetyof agricultural products is improved.

Description

technical field [0001] The invention belongs to the technical field of variable-variable spraying, and in particular relates to a variable-variable spraying system and a control method thereof. Background technique [0002] In the current agricultural production environment, pesticides are generally sprayed extensively, and the entire farmland is uniformly sprayed according to the principle of consistent weed coverage. This will not only cause waste of pesticides and increase production costs, but also affect the ecological environment and The safety of agricultural products has a negative impact, which is not conducive to the sustainable development of agriculture. Variable-variable spraying technology is input according to the specific diseases, insect pests and weeds in each area of ​​the farmland, finely and accurately adjusts the amount of pesticide application, maximizes the utilization rate of pesticides, avoids damage to the farmland environment, and improves the saf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01M7/00
CPCA01M7/0032A01M7/0089A01M7/0096Y02A40/10
Inventor 徐艳蕾王新东李陈孝付大平周婧刘媛媛孟笑天何润
Owner JILIN AGRICULTURAL UNIV
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