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A method for accurate measurement by using dual prisms, and a measuring rod

A technology of precise measurement and double prism, which is applied in the direction of measuring devices, measuring instruments, surveying and navigation, etc. It can solve the problems of large measurement errors and the inability to guarantee the high precision and accuracy of point measurement, so as to improve the accuracy, measure quickly, Simple operation effect

Inactive Publication Date: 2013-09-11
CHINA GEZHOUBA GROUP CO LTD
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  • Application Information

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Problems solved by technology

During the measurement, the requirements for the auxiliary mirror operators are also very high. The mirror operators are required to be highly concentrated and keep the bubble in the center strictly. A slight deviation of the bubble will cause a large measurement error, and the high precision and accuracy of the point measurement cannot be guaranteed. sex

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  • A method for accurate measurement by using dual prisms, and a measuring rod
  • A method for accurate measurement by using dual prisms, and a measuring rod
  • A method for accurate measurement by using dual prisms, and a measuring rod

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Embodiment Construction

[0030] combine figure 1 , figure 2 , image 3 , The measurement method is double prism. The method of accurate measurement includes using a total station to measure A prism, B prism and C to be measured on the same straight line, and the straight-line distance S between B prism and C to be measured BC If known, use the total station to measure the three-dimensional coordinates of A prism and B prism, A prism (XA, YA, HA), B prism (XB, YB, HB), and calculate the distance from A prism to B prism Slope distance S AB And the slant distance S from the B prism to the point C to be measured BC , use the following formula to calculate the three-dimensional coordinates of the point C to be measured, and the specific formula includes the following steps:

[0031] (1), calculate the horizontal projection distance D of A prism and B prism AB

[0032] Horizontal projection distance D of prism A and prism B AB It can be inversely calculated by the plane coordinates (XA, YB) and (XB,...

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Abstract

The invention provides a method and an apparatus for accurate measurement by using dual prisms. The method comprises: measuring prism A, prism B and a to-be-measured point C which are located on the same line; in the case that a linear distance SBC between the prism B and the to-be-measured point C is given, determining three-dimensional coordinates of the prism A (XA, YA, HA), and the prism B (XB, YB, HB); and measuring and calculating a slope distance SAB between the prism A and the prism B and a slope distance SBC between the prism A and the to-be-measured point C, and calculating the three-dimensional coordinates of the to-be-measured point C according to a formula (shown in the specification). According to the present invention, the method is simple, the accuracy is high, during the measurement, the need of adjusting an adjustment bubble of a measuring rod is eliminated; during measurement of a sheltered position, all one need to do is to adjust the angle direction of the measuring rod or lengthen the distance between the prism B and the to-be-measured point C according to the situation, without the need of side shots.

Description

technical field [0001] The invention relates to a method, in particular to a method and equipment for accurate measurement of a double prism. Background technique [0002] The common single prism measuring centering rods on the market have the characteristics of compactness, flexibility, and simple operation, and are widely used in the field of surveying and mapping. The disadvantage is that the circular level bubbles of the centering rods can only roughly check the vertical direction, and are suitable for measurement The position can only be in the vertical direction of the measured point, and other non-vertical hidden parts cannot be measured. Sometimes in order to improve the stability of the vertical centering, it is necessary to add a tripod, which increases the cost of the equipment and is not convenient to carry. Moreover, due to bumps or vibrations and other reasons in the actual surveying and mapping process, the accuracy of the circular level bubble of the cen...

Claims

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Application Information

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IPC IPC(8): G01C15/08
Inventor 邱章云田学芝
Owner CHINA GEZHOUBA GROUP CO LTD
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