CN103471572A - Total station networking measurement method of large-scale structural component - Google Patents

Abstract

The invention discloses a total station networking measurement method of a large-scale structural component, and belongs to the technical field of industrial measurement. The measurement accuracy in the prior art is low. The total station networking measurement method comprises the steps of before measurement is carried out, enabling a main station total station and an auxiliary station total station to be arranged on the two sides of the to-be-measured large-scale structural component, determining a main station user coordinate system, determining a plurality of reference points at the positions, located between the main station total station and the auxiliary station total station, of the periphery of the large-scale structural component, enabling the reference points to be brought into the main station user coordinate system, enabling six or more of the reference points to serve as station setting reference points, measuring the coordinate values of the station setting reference points, enabling the station setting reference points to be capable of being simultaneously measured by the auxiliary station total station, establishing an auxiliary station user coordinate system according to the station setting reference points, enabling the main station total station and the auxiliary station total station to respectively measure and record the coordinate values of the other reference points, and obtaining conversion parameters according to a parameter coordinate conversion equation. When measurement is carried out, data measured by the main station total station direct serve as measurement results, data measured by the auxiliary station total station serve as measurement results after coordinate conversion is carried out, and measurement on the whole large-scale structural component is completed.

Description

The method of large-sized structural parts is measured in the total powerstation networking

Technical field

The present invention relates to a kind of total powerstation networking and measure the method for large-sized structural parts, belong to the commercial measurement technical field.

Background technology

Existing large-sized structural parts measuring method is based on the exploitation of brick pattern method for three-dimensional measurement basically.Two standing posture transit survey systems for example, the composition of system comprises tripod and other annexes of two high precision transits, computing machine, hyperchannel connector and online cable, gauge, high stable.Although some measuring system has been used total powerstation,, be only also the angle measurement function of having used total powerstation, therefore, also belong to the transit survey system.The measuring method that adopts described transit survey system is for determining baseline the place ahead mensuration that crosses, as shown in Figure 1, two transit San Zhou centers are respectively a L and put R, the model space coordinates, the L that sets up an office is true origin, point L, some R line in the horizontal direction be projected as the x axle, the vertical of crossing some L is the z axle, by right-hand rule, determines the y axle.

Before measurement, first on two transits, paste to take aim at mutually and use target, then two transits are taken aim at mutually, namely slightly take aim at, and obtain two zenith angle θ between instrument _lR, θ _rL, calculating two vertical ranges between instrument is Δ z:

$\mathrm{\Δz}=\frac{1}{2}(\cot {\mathrm{\θ}}_{\mathrm{LR}}-\cot {\mathrm{\θ}}_{\mathrm{RL}})b---\left(1\right)$

Then carry out fine positioning, namely two transits aim at respectively two end points p of gauge BL ₁, p ₂, as shown in Figure 2, obtain angle [alpha] ₁, α ₂and β ₁, β ₂, by calculating two horizontal range b between instrument:

$b=\frac{\mathrm{BL}}{\sqrt{{\left\{\right[\frac{\sin {\mathrm{\α}}_1\×\sin {\mathrm{\β}}_1}{\sin ({\mathrm{\α}}_1+{\mathrm{\β}}_1)}]-[\frac{\sin {\mathrm{\α}}_2\×\sin {\mathrm{\β}}_2}{\sin ({\mathrm{\α}}_2+{\mathrm{\β}}_2)}\left]\right\}}^2+{\left\{\right[\frac{\sin {\mathrm{\β}}_1\×\cos {\mathrm{\α}}_1}{\sin ({\mathrm{\α}}_1+{\mathrm{\β}}_1)}]-[\frac{\sin {\mathrm{\β}}_2\×\sin {\mathrm{\α}}_2}{\sin ({\mathrm{\α}}_2+{\mathrm{\β}}_2)}\left]\right\}}^2}}---\left(2\right)$

During measurement, two transits are aimed at space 1 N to be measured (x, y, z) simultaneously, obtain two horizontal angle α, β and two zenith angle ξ _l, ξ _r.Then, calculate a N coordinate figure according to formula (3).

$\left\{\begin{array}{c}X=\frac{b\sin \mathrm{\α}\cos \mathrm{\β}}{\sin (\mathrm{\α}+\mathrm{\β})}\\ Y=\frac{b\sin \mathrm{\β}\sin \mathrm{\α}}{\sin (\mathrm{\α}+\mathrm{\β})}\\ Z=\frac{1}{2}[b(\sin \mathrm{\β}\cos {\mathrm{\ξ}}_L+\sin \mathrm{\α}\cos {\mathrm{\ξ}}_R)/\sin (\mathrm{\α}+\mathrm{\β})+\mathrm{\Δz}]\end{array}\right.---\left(3\right)$

Described transit survey system needs two transits to measure a bit when measuring simultaneously, can calculate this coordinate figure under user coordinate system according to formula (3).So this system has the deficiency of the following aspects:

1, two instruments must be positioned at can the position of intervisibility on, so just can conjunction measuring obtain the coordinate figure of tested point;

Need to be reequiped or be installed additional corresponding equipment to instrument when 2, instrument is taken aim at mutually, can't be guaranteed the original precision of instrument;

When 3, essence is taken aim at, need to utilize gauge, ask for the distance between two stations by taking measurement of an angle, transmission error is larger;

4, during the coordinate figure of computer memory 1 N to be measured (x, y, z), angle participates in computing, and degree of accuracy can not guarantee;

Form this measuring system if 5 replace transit with total powerstation, only utilize its angle measurement function, and be not used such as functions such as range findings, cause waste.

Summary of the invention

Its purpose of the present invention is, with total powerstation, replaces transit, measures large-sized structural parts, while simplified measurement process, the measuring accuracy that improves, and for this reason, we have invented a kind of method that large-sized structural parts is measured in total powerstation networking.

The method that large-sized structural parts is measured in the present invention's total powerstation networking is characterized in that, as shown in Figure 3,

(1) before measuring

Main website total powerstation 1, extension station total powerstation 2 are arranged on to large-sized structural parts to be measured 3 both sides; Determine three measurement points on large-sized structural parts 3, and lay the location prism, according to the way of these three measurement points and---line---point that passes through face, determine the main website user coordinate system; Between main website total powerstation 1, extension station total powerstation 2, and determine some reference point q around large-sized structural parts 3 ₁q _n, and lay one by one the location prism, with reference to a q ₁q _ninclude the main website user coordinate system in, will be wherein more than six or six as establishing the station reference point, measure its coordinate figure, and the described station reference point of establishing can be that extension station total powerstation 2 is measured simultaneously; According to the described station reference point of establishing, by the coordinate Directional Method, set up the extension station user coordinate system; Other reference point coordinate figures that can simultaneously be measured by main website total powerstation 1, extension station total powerstation 2 except establishing the station reference point are measured respectively and recorded to main website total powerstation 1, extension station total powerstation 2, the main website user coordinate system coordinate figure of these reference point and extension station user coordinate system coordinate figure substitution seven parameter coordinate conversion equations obtained to conversion parameter: coordinate translation amount X ₀, Y ₀, Z ₀, rotation of coordinate amount ω _x, ω _y, ω _z, scale coefficient m.

(2) while measuring

Main website total powerstation 1, extension station total powerstation 2 are measured respectively the measurement point on the large-sized structural parts 3 that can measure separately, and wherein main website total powerstation 1 measurement data is directly as measurement result; Measurement data (the X of extension station total powerstation 2 ₁, Y ₁, Z ₁) be converted to coordinate figure (X in the main website user coordinate system by seven parameter coordinate conversion equations (4) ₂, Y ₂, Z ₂) after become measurement result, main website total powerstation 1, extension station total powerstation 2 complete the measurement to large-sized structural parts 3 integral body jointly.

$\left[\begin{array}{c}{X}_2\\ Y_2\\ Z_2\end{array}\right]=\left[\begin{array}{c}{X}_0\\ Y_0\\ Z_0\end{array}\right]+\left[\begin{array}{ccc}0& {-Z}_1& Y_1\\ Z_1& 0& {-X}_1\\ {-Y}_1& X_1& 0\end{array}\right]\left[\begin{array}{c}{\mathrm{\ω}}_x\\ {\mathrm{\ω}}_y\\ {\mathrm{\ω}}_z\end{array}\right]+m\left[\begin{array}{c}{X}_1\\ Y_1\\ Z_1\end{array}\right]+\left[\begin{array}{c}{X}_1\\ Y_1\\ Z_1\end{array}\right]---\left(4\right)$

The present invention abandons transit, adopts total powerstation fully, avoids the waste of transit function.The present invention does not change surveying instrument, guarantees design, the manufacturing accuracy of surveying instrument.No matter the present invention before measurement or in measurement, does not all require that two surveying instruments can be to taking aim at, therefore, measurement range is large, is more suitable for the measurement in large-sized structural parts.Though the present invention measurement data obtain or the processing of measurement data aspect, equal design corner tolerance not, therefore, the present invention can improve measuring accuracy.

The accompanying drawing explanation

Fig. 1 is existing two standing posture transit survey systematic survey schematic diagram.Fig. 2 determines two horizontal range schematic diagram between instrument by gauge while adopting existing two standing posture transit survey systematic survey.Fig. 3 is the method schematic diagram that large-sized structural parts is measured in the present invention's total powerstation networking, and this figure doubles as Figure of abstract.

Embodiment

Its concrete scheme of method of the present invention's total powerstation networking measurement large-sized structural parts is as follows, as shown in Figure 3,

(1) before measuring

Main website total powerstation 1, extension station total powerstation 2 are arranged on to large-sized structural parts to be measured 3 both sides; Determine three measurement points on large-sized structural parts 3, and lay the location prism, according to the way of these three measurement points and---line---point that passes through face, determine the main website user coordinate system; Between main website total powerstation 1, extension station total powerstation 2, and determine some reference point q around large-sized structural parts 3 ₁q _n, and lay one by one the location prism, with reference to a q ₁q _ninclude the main website user coordinate system in, will be wherein more than six or six as establishing the station reference point, measure its coordinate figure, and the described station reference point of establishing can be that extension station total powerstation 2 is measured simultaneously; According to the described station reference point of establishing, by the coordinate Directional Method, set up the extension station user coordinate system; Other reference point coordinate figures that can simultaneously be measured by main website total powerstation 1, extension station total powerstation 2 except establishing the station reference point are measured respectively and recorded to main website total powerstation 1, extension station total powerstation 2, the main website user coordinate system coordinate figure of these reference point and extension station user coordinate system coordinate figure substitution seven parameter coordinate conversion equations obtained to conversion parameter: coordinate translation amount X ₀, Y ₀, Z ₀, rotation of coordinate amount ω _x, ω _y, ω _z, scale coefficient m.

(2) while measuring

Main website total powerstation 1, extension station total powerstation 2 are measured respectively the measurement point on the large-sized structural parts 3 that can measure separately, and wherein main website total powerstation 1 measurement data is directly as measurement result; Measurement data (the X of extension station total powerstation 2 ₁, Y ₁, Z ₁) be converted to coordinate figure (X in the main website user coordinate system by seven parameter coordinate conversion equations (4) ₂, Y ₂, Z ₂) after become measurement result, main website total powerstation 1, extension station total powerstation 2 complete the measurement to large-sized structural parts 3 integral body jointly.

$\left[\begin{array}{c}{X}_2\\ Y_2\\ Z_2\end{array}\right]=\left[\begin{array}{c}{X}_0\\ Y_0\\ Z_0\end{array}\right]+\left[\begin{array}{ccc}0& {-Z}_1& Y_1\\ Z_1& 0& {-X}_1\\ {-Y}_1& X_1& 0\end{array}\right]\left[\begin{array}{c}{\mathrm{\ω}}_x\\ {\mathrm{\ω}}_y\\ {\mathrm{\ω}}_z\end{array}\right]+m\left[\begin{array}{c}{X}_1\\ Y_1\\ Z_1\end{array}\right]+\left[\begin{array}{c}{X}_1\\ Y_1\\ Z_1\end{array}\right]---\left(4\right)$

In formula: X ₁, Y ₁, Z ₁for the coordinate figure of measurement point under the extension station user coordinate system, X ₂, Y ₂, Z ₂for the coordinate figure of this measurement point under the main website user coordinate system, X ₀, Y ₀, Z ₀for the coordinate translation amount, ω x, ω y, ω z are the rotation of coordinate amount, and m is scale coefficient.

Claims (2)

1. the method for large-sized structural parts is measured in a total powerstation networking, it is characterized in that:

Before measurement, main website total powerstation (1), extension station total powerstation (2) are arranged on to large-sized structural parts to be measured (3) both sides; Determine three measurement points large-sized structural parts (3) is upper, and lay the location prism, according to the way of these three measurement points and---line---point that passes through face, determine the main website user coordinate system; Between main website total powerstation (1), extension station total powerstation (2), and determine some reference point q on every side at large-sized structural parts (3) ₁q _n, and lay one by one the location prism, with reference to a q ₁q _ninclude the main website user coordinate system in, will be wherein more than six or six as establishing the station reference point, measure its coordinate figure, and the described station reference point of establishing can be that extension station total powerstation (2) is measured simultaneously; According to the described station reference point of establishing, by the coordinate Directional Method, set up the extension station user coordinate system; Other reference point coordinate figures that can simultaneously be measured by main website total powerstation (1), extension station total powerstation (2) except establishing the station reference point are measured respectively and recorded to main website total powerstation (1), extension station total powerstation (2), the main website user coordinate system coordinate figure of these reference point and extension station user coordinate system coordinate figure substitution seven parameter coordinate conversion equations obtained to conversion parameter: coordinate translation amount X ₀, Y ₀, Z ₀, rotation of coordinate amount ω _x, ω _y, ω _z, scale coefficient m;

During measurement, main website total powerstation (1), extension station total powerstation (2) are measured respectively the measurement point on the large-sized structural parts (3) that can measure separately, and wherein main website total powerstation (1) measurement data is directly as measurement result; Measurement data (the X of extension station total powerstation (2) ₁, Y ₁, Z ₁) be converted to coordinate figure (X in the main website user coordinate system by seven parameter coordinate conversion equations ₂, Y ₂, Z ₂) after become measurement result, main website total powerstation (1), extension station total powerstation (2) complete the measurement whole to large-sized structural parts (3) jointly.

2. the method for large-sized structural parts is measured in total powerstation networking according to claim 1, it is characterized in that, described seven parameter coordinate conversion equations are:

$\left[\begin{array}{c}{X}_2\\ Y_2\\ Z_2\end{array}\right]=\left[\begin{array}{c}{X}_0\\ Y_0\\ Z_0\end{array}\right]+\left[\begin{array}{ccc}0& {-Z}_1& Y_1\\ Z_1& 0& {-X}_1\\ {-Y}_1& X_1& 0\end{array}\right]\left[\begin{array}{c}{\mathrm{\ω}}_x\\ {\mathrm{\ω}}_y\\ {\mathrm{\ω}}_z\end{array}\right]+m\left[\begin{array}{c}{X}_1\\ Y_1\\ Z_1\end{array}\right]+\left[\begin{array}{c}{X}_1\\ Y_1\\ Z_1\end{array}\right],$

In formula: X ₁, Y ₁, Z ₁for the coordinate figure of measurement point under the extension station user coordinate system, X ₂, Y ₂, Z ₂for the coordinate figure of this measurement point under the main website user coordinate system, X ₀, Y ₀, Z ₀for the coordinate translation amount, ω x, ω y, ω z are the rotation of coordinate amount, and m is scale coefficient.

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