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Modeling method of boundary of curve type farmland operation area

A technology of working area and modeling method, which is applied in image data processing, instruments, and 2D image generation, etc., can solve problems such as establishing mathematical models of farmland area boundaries, crashing, and multi-spraying in non-working areas.

Active Publication Date: 2014-04-09
CENT SOUTH UNIV
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AI Technical Summary

Problems solved by technology

When this farmland outline map is used for the path and track planning of agricultural plant protection machine spraying pesticides, there will be excessive spraying in non-operation areas, which will waste pesticides; The calculation is inaccurate; the existing method does not establish a mathematical model for the boundary of the farmland area, so it cannot provide a reliable basis for the path and track planning of the farmland operation area; the vertices of obstacles that may exist in the farmland operation area (such as utility poles, Trees, signal towers, etc.), when the farmland outline map is used for agricultural plant protection aircraft spraying pesticide paths and track planning, it may cause the agricultural plant protection aircraft to collide or crash.

Method used

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  • Modeling method of boundary of curve type farmland operation area
  • Modeling method of boundary of curve type farmland operation area
  • Modeling method of boundary of curve type farmland operation area

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] 1) Assume that the point collector starts with the first key point, and collects m key points sequentially in a clockwise direction (in the period T of GPS s As the sampling period for collecting the boundary points of the farmland operation area), D 1 (x 1 ,y 1 ),D 2 (x 2 ,y 2 ),D 3 (x 3 , y3 ),…,D m (x m ,y m ),Such as figure 1 shown;

[0032] 2) Compare the abscissas of these m points and find out the points with the smallest and largest abscissas. Suppose the point with the smallest abscissa is D i (x i ,y i ), the point with the largest abscissa is D j (x j ,y j ). (If the abscissa of multiple points is the minimum value, the point with the first point order is taken as the minimum point. There is a special case here: if D 1 and D m The abscissas are all equal, but here take D m As the minimum point; if the a...

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Abstract

The invention discloses a modeling method of the boundary of a curve type farmland operation area. The modeling method comprises the steps that key points of the boundary of the curve type farmland operation area are collected, the point with the maximum abscissa value and the point with the minimum abscissa value of all the key points are found, and an upper boundary model and a lower boundary model are established through the cubic spline function. According to the modeling method of the boundary of the curve type farmland operation area, the boundary of the curve type farmland operation area and the peaks of obstacles in the farmland operation area can be accurately recorded and drawn, so that the accurate farmland operation area is provided for operators of an agricultural plant protection machine, and a reliable basis is provided for the route and path planning of the agricultural plant protection machine and calculation of the farmland operation area.

Description

technical field [0001] The invention relates to a method for modeling the boundary of a curved farmland operation area. Background technique [0002] With the continuous development of science and technology, the use of modern machinery to replace manual labor has become a popular trend in all walks of life. As a traditional large agricultural country, our country has a very large area of ​​arable land. However, at present, traditional manual methods are still used in domestic farmland operations. Among them, pesticide spraying adopts the method of artificial spraying, which is not only inefficient, but also has great physical and mental harm to the workers. Therefore, advanced technology is urgently needed to change this phenomenon. Agricultural plant protection machines have emerged as the times require. However, all plant protection machines today are operated manually, and the spraying area and boundary of the farmland are judged entirely by the operator's eyes, which i...

Claims

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Application Information

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IPC IPC(8): G06T11/00
Inventor 谭冠政刘振焘胡建中阮启果黄宇张丹罗倩慧
Owner CENT SOUTH UNIV
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