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Any line remote elevation measurement method based on theodolite

A measurement method, the technology of theodolite, applied in height/horizontal measurement, measuring device, instrument, etc., to achieve the effect of easy operation, simple method and less measurement parameters

Inactive Publication Date: 2017-07-07
STATE GRID HUBEI ELECTRIC POWER CO XIAOGAN POWER SUPPLY CO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a method for measuring the suspension height of any line based on the theodolite, which solves the problem that the theodolite cannot be used to measure the suspension height of the line under bad terrain, improves work efficiency, and widens the scope of use of the theodolite

Method used

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  • Any line remote elevation measurement method based on theodolite
  • Any line remote elevation measurement method based on theodolite
  • Any line remote elevation measurement method based on theodolite

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Embodiment

[0045] 1. If figure 1 As shown, the horizontal angle ∠A′OB′ between the easy-to-measure points A and B is measured with theodolite, as shown in figure 2 The measured tower foot interval t'=MN is shown, and the horizontal distance OA', OB' is obtained with the formula D'=100t'.

[0046] 2. If figure 2 As shown, the vertical angle ∠C'OC of point C is measured by theodolite, and the horizontal angle ∠A'OC of the projection A' of point A and the projection C' of point C to be measured is measured.

[0047] 3. According to the triangular sine theorem, cosine theorem and arcsine function, solve ΔOA′B′ to obtain A′B′, ∠OA′B′,

[0048]

[0049] 4. Solve ΔOA'C' according to the triangular sine law to get OC', Wherein, ∠OC'A'=180°-∠OA'C'-∠A'OC', ∠OA'C'=∠OA'B'.

[0050] 5. Transform according to the definition formula of the tangent of a triangle, and solve RtΔOCC′ to obtain CC′, CC′=OC′·tan∠COC′.

[0051] 6. Add the height of the theodolite to CC' to obtain the hanging height...

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Abstract

The invention discloses an any line remote elevation measurement method based on a theodolite. A triangle solving principle is introduced into the remote elevation measurement of the theodolite; according to a horizontal angle and a horizontal distance of two points, which are convenient to measure, on the line, a vertical angle of a point to be measured and a horizontal angle of the point to be measured and a certain measured point, remote elevation of any point on the line is deduced: firstly, the horizontal angle and the horizontal distance of any two points of a power transmission and distribution line are measured; secondly, under a condition that the position of the theodolite is constant, the vertical angle of any point of the line and the horizontal angle with one measured point are measured; and finally, two projection triangles of a horizontal plane and one triangle of a plumb face where the point to be measured is positioned are solved to obtain the remote elevation of the point to be measured of the line. According to the any line remote elevation measurement method, two horizontal angles, one vertical angle and two sections of horizontal distances are measured to deduce the remote elevation of any point on the line, operation is simple, the problem that a box staff cannot be placed on the ground when the remote elevation is measured by the theodolite is effectively solved, and the applicable range of the theodolite is expanded.

Description

technical field [0001] The invention relates to the field of surveying and mapping of power transmission and distribution lines, in particular to a method for measuring the suspension height of any line based on theodolite. Background technique [0002] The power distribution line is an important part of the power transmission process. The safety distance of the power line is a key factor to be considered in the design of the transmission line, which is directly related to the safety of the power grid, people and equipment. Commonly used measurement methods are distance measurement with a distance measuring rod or suspension height measurement with a theodolite or total station. Theodolite is a precision optical instrument used to measure the horizontal angle and vertical angle of space. Because of its convenient operation and low requirements for staff, it is widely used in the fields of lines, railways, surveying and construction. When the theodolite measures the suspens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 王思奇
Owner STATE GRID HUBEI ELECTRIC POWER CO XIAOGAN POWER SUPPLY CO
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