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Subway safety protected area rule and regulation-breaking project area rapid measurement method

A measurement method and technology for protected areas, which are applied in the field of rapid measurement of the area of ​​illegal projects in subway safety protection areas, can solve the problems of poor accuracy, many tools, and time-consuming, and achieve the goal of improving accuracy, convenient operation, and improving work efficiency. Effect

Inactive Publication Date: 2017-03-29
GUANGZHOU METRO GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly solves the technical problems of time-consuming, poor accuracy and carrying too many tools in the existing manual measurement method

Method used

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  • Subway safety protected area rule and regulation-breaking project area rapid measurement method
  • Subway safety protected area rule and regulation-breaking project area rapid measurement method
  • Subway safety protected area rule and regulation-breaking project area rapid measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, with reference to figure 1 , 4. First, use the built-in GPS positioning function to collect each contour corner of the illegal project. During the collection process, high-precision instruments are used to assist in the positioning and acquisition of the coordinates of each corner point. Finally, the area is calculated through JAVA programming. Take measurements. Specifically, in order to find that the illegal item is a triangle, first collect the GPS coordinates S(x 1 ,y 1 ), a(x 2 ,y 2 ), b(x 3 ,y 3 ), the directed area formula of the violation item is:

[0016]

[0017] Expand the determinant in step 1 to get:

[0018]

[0019] Then automatically calculate the area value through JAVA programming.

Embodiment 2

[0020] Embodiment 2, with reference to figure 2 , 4. First, use the built-in GPS positioning function to collect each contour corner of the illegal project. During the collection process, high-precision instruments are used to assist in the positioning and acquisition of the coordinates of each corner point. Finally, the area is calculated through JAVA programming. Take measurements. Specifically, in order to find that the illegal item is a hexagon, first collect the GPS coordinates of six points on the outline of the illegal item, with point S as the starting point (point 1), and points a to e as points 2, 3, 4, 5, and 6 in turn. The coordinates of the six points are: S(x 1 ,y 1 ), a(x 2 ,y 2 ), b(x 3 ,y 3 ), c(x 4 ,y 4 ), d(x5,y5), e(x 6 ,y 6 ), we can derive the following formula for the sum of polygon areas:

[0021]

[0022] so that it can be deduced

[0023]

[0024] Then automatically calculate the area value through JAVA programming.

Embodiment 3

[0025] Embodiment 3, with reference to image 3 , 4. First, use the built-in GPS positioning function to collect each contour corner of the illegal project. During the collection process, high-precision instruments are used to assist in the positioning and acquisition of the coordinates of each corner point. Finally, the area is calculated through JAVA programming. Take measurements. Specifically, in order to find that the illegal item is a quadrilateral, first collect the GPS coordinates of four points on the outline of the illegal item, with point S as the starting point (point 1), and points a to c as points 2, 3, and 4 in sequence. The coordinates of the four points are : S(x 1 ,y 1 ), a(x 2 ,y 2 ), b(x 3 ,y 3 ), c(x 4 ,y 4 ),Available:

[0026]

[0027] Note: If the point is given clockwise, the directed area is negative, and if it is given counterclockwise, the directed area is positive.

[0028] Therefore, the area formula can be derived as

[0029]

[...

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Abstract

The present invention relates to a subway safety protected area rule and regulation-breaking project area rapid measurement method. The main objective of the invention is to solve the technical problems of much consumed time, poor accuracy and carrying many tools of an existing manual measurement method. The rapid measurement method includes the following steps of: polygonal rule and regulation-breaking project angular point acquisition: a built-in GPS is adopted to position the GPS coordinates of each point of the contour of the rule and regulation-breaking project; and area acquisition: the polygon is decomposed into triangular structures, the sum of the area of the triangles is the area S of the polygonal rule and regulation-breaking project, wherein the area S of the polygonal rule and regulation-breaking project is expressed by an equation described in the descriptions in the invention, wherein deltaopkpk+1 is a defined origin point, (0,0) is the starting point of a corresponding triangle, a triangle opkpk+1 is composed of any two adjacent points pk and pk+1 of the polygon, k is the k-th vertex of the polygon, and S indicates summation; and area value automatic calculation by JAVA programming.

Description

technical field [0001] The invention relates to a method for measuring the area of ​​an item, in particular to a method for quickly measuring the area of ​​an illegal item in a subway safety protection zone. Background technique [0002] At present, the main method for measuring the area of ​​illegal items in the subway safety protection area is to introduce the method of general engineering calculation. For small-area illegal items, inspectors can use tape measures, manual visual estimation, etc. to conduct simple calculations, and for large-area violations For projects, inspectors can use high-precision instruments such as total stations to assist in calculating the area value. However, with the increase of rail transit lines and the accumulative increase of illegal projects in safety protection areas, the existing measurement technology is far from meeting the requirements of rapid calculation of the area of ​​illegal projects, which is time-consuming and not accurate eno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/32
CPCG01B7/32
Inventor 杨玲芝方恩权刘学增吕利民邢良平何喆卿朱晓燕
Owner GUANGZHOU METRO GRP CO LTD