A Boundary Modeling Method of Polygon Farmland Operation Area
A technology of operation area and modeling method, which is applied in the field of polygonal farmland operation area boundary modeling, and can solve the problems of establishing mathematical model of farmland area boundary, inaccurate calculation of operation area, waste of pesticides, etc.
Active Publication Date: 2016-06-22
CENT SOUTH UNIV
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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.
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[0021] The specific implementation process of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0022] 1) Assume that the point collector starts from the first point and uses GPS positioning to collect n vertices of the polygonal farmland operation area in a clockwise direction, respectively D 1 (x 1 ,y 1 ),D 2 (x 2 ,y 2 ),D 3 (x 3 ,y 3 ),...,D n (x n ,y n ),Such as figure 1 Shown (taking n=4 as an example).
[0023] 2) Compare the abscissas of the n vertices 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 )(1≤i≤n), the point with the largest abscissa is D j (x j ,y j )(1≤j≤n)(If the abscissa of multiple points is the minimum value, the point with the first order of sampling is taken as the minimum point. Here is a special case: if D 1 and D n The abscissas are all equal, but here take D n As the minimum point; if the abscis...
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The invention discloses a boundary modeling method of a polygonal farmland operation area. The method comprises the steps that n peaks of the boundary of the polygonal farmland operation area are collected; the n peaks are put at a first quadrant of a rectangular coordinate system; the peak with the biggest X-coordinate value and the peak with the smallest X-coordinate value are determined; an upper boundary function model and a lower boundary function model are established, and boundary modeling is completed. According to the method, the boundary of the linear polygonal farmland operation area and the peaks of obstacles in the farmland operation area can be recorded and drawn precisely, so that the accurate farmland operation area is provided for an operator of an agricultural plant protection machine, and a reliable basis is provided for the path and track planning of the agricultural plan protection machine and the calculation of farmland operation area.
Description
technical field [0001] The invention relates to a polygonal farmland operation area boundary modeling method. 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 inevitably ...
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IPC IPC(8): G06T11/20
Inventor 刘振焘谭冠政胡建中黄宇张丹王杰罗倩慧
Owner CENT SOUTH UNIV