Variable rate fertilizer applicator lag correction method, device and system
A correction method and technology of a correction device, which are applied in fertilization devices, fertilizer distributors, applications, etc., can solve the problem of lack of a good correction method for the amount of fertilization, and achieve the effect of strong operability and adaptability, and improving the accuracy of the fertilization position.
Active Publication Date: 2020-02-14
CHINA AGRI UNIV
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Problems solved by technology
[0004] At present, there is still no good correction method for the position lag of fertilizer application amount caused by lag time
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[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0025] figure 1 The flow chart of the method for correcting the hysteresis of the variable fertilizer applicator provided by the embodiment of the present invention, such as figure 1 As shown, the embodiment of the present invention provides a method for correcting the hysteresis of a variable fertilizer applicator, including:
[0026] 101. Obta...
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An embodiment of the invention provides a variable rate fertilizer applicator lag correction method, device and system. The method includes the steps: acquiring total lag time of a variable rate fertilizer applicator from receiving GNSS (global navigation satellite system) signals to fertilizer falling; acquiring the horizontal distance between a GNSS antenna and a fertilizer falling port of the fertilizer applicator; calculating fertilizer application lag distance according to the total lag time and the running speed of the fertilizer applicator, and determining correction distance accordingto the difference between the fertilizer application lag distance and the horizontal distance. According to the method, the influence of the position of the GNSS antenna and the total lag time on lagof the fertilizer applicator is taken into account, the correction distance needing compensation is acquired by the aid of the position of the GNSS antenna and the total lag time, a corrected variablerate fertilizer application position can be acquired, the timing advance value of instructions can be controlled, and fertilizer application position lag can be corrected. The method has strong operability and applicability, the problem of lag of the fertilizer application position of the variable rate fertilizer applicator at different speeds can be effectively corrected, and accuracy of the fertilizer application position of the variable rate fertilizer applicator is improved.
Description
technical field [0001] The invention relates to the technical field of variable fertilization, in particular to a method, device and system for correcting the lag of a variable fertilization machine. Background technique [0002] Variable fertilization technology is an important part of precision agriculture and an important direction for the development of modern agriculture. A variable fertilization machine is generally composed of a GNSS receiver, a control system, and a variable fertilization actuator. The control system needs to apply fertilizer to the corresponding position according to the demand according to the prescription map. The variable fertilizer applicator is working on the move. Since the system needs a certain amount of time to respond, after the system sends out a signal, the amount of fertilizer applied cannot reach the target value immediately, but undergoes a gradual change process, which causes a lag in the position of the amount of fertilizer applied,...
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IPC IPC(8): A01C15/00
CPCA01C15/00
Inventor 刘刚张季琴
Owner CHINA AGRI UNIV