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Device and method for evaluating accuracy of prism-free distance measurement of total station

An evaluation device and total station technology, which is applied to measurement devices, instruments, etc., can solve the problems of strong reflection, reduced ranging accuracy, and inability to guarantee the accuracy of the prism-free ranging mode, and achieve the effect of reasonable use.

Inactive Publication Date: 2012-06-20
NAT INST OF METROLOGY CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the total station generally only focuses on its prism ranging mode during verification, so the verification results obtained in this way cannot guarantee the accuracy of the non-prism ranging mode
[0003] The accuracy of distance measurement in the prismless mode of the total station is related to the target material, incident angle, and incident distance. When the target material is highly reflective and the incident angle is small, the ranging accuracy is reduced or even no valid data can be obtained.

Method used

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  • Device and method for evaluating accuracy of prism-free distance measurement of total station
  • Device and method for evaluating accuracy of prism-free distance measurement of total station

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Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 As shown, the total station 1 is in the non-prism mode, and the ranging accuracy of the total station 1 is evaluated using an evaluation device including two fixed platforms and a standard length measuring tool (not shown). The two fixed platforms are rotatable fixed platforms with scales, which are respectively the first fixed platform 2 and the second fixed platform 3. Specifically, there are circumferential scales on the two fixed platforms, and the fixed platforms can be By manually adjusting the rotary scale dial, or a motor-driven scale disc. The first positioning part 4 is fixed on the first fixed platform 2 by a clamp, and likewise, there is a second positioning part 5 on the second fixed platform 3, and the second positioning part 5 can be fixed to the second fixed platform. On platform 3, the positioning parts on the two fixed platforms can manually adjust the angle or automatically select the appropriate rotation position and rotation angle ...

Embodiment 2

[0026] As a modification of Embodiment 1 of the present invention, the same content of Embodiment 2 and Embodiment 1 will not be repeated, and the first fixed platform and the second fixed platform can be arranged on a horizontal sliding rail with scales, thereby facilitating the second Accurate adjustment of the distance between the first fixed platform and the second fixed platform, the positioning components on the fixed platform are not limited to cylinders, as long as the incidence surfaces of the first positioning component and the second positioning component are regular and easy to determine their center points The shape of the total station can be replaced by the first positioning part and the second positioning part and the different sample substances to be tested on the total station, and the length is measured at different incident angles and incident distances, and the total station can be obtained. The measurement accuracy evaluation data of the instrument.

[00...

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Abstract

The invention relates to a device and a method for evaluating the accuracy of prism-free distance measurement of a total station. The device comprises two rotatable fixed platforms with scales; positioning parts located on the fixed platforms; and a length measuring tool for measuring the distance between positioning points of the positioning parts on the two fixed platforms. The device cooperates with a total station to perform analysis, wherein the total station and the two positioning parts are in triangular distribution, coordinates of the positioning points of the two positioning parts are measured by the total station, and the distance between the two positioning points is calculated and compared with the distance obtained by the length measuring tool, to analyze the distance measurement accuracy of the total station. The inventive evaluating device and method can analyze the measurement accuracy of the total station in a prism-free mode to obtain corresponding analysis data, to further determine the measurement capacity of the total station under different conditions, and ensures reasonable application of the total station prism-free mode.

Description

technical field [0001] The present invention relates to an evaluation device and method, in particular to an evaluation device and method for accuracy evaluation of total station without prism distance measurement. Background technique [0002] The total station is a high-tech measuring instrument integrating light, mechanics and electricity. It is a surveying and mapping instrument system integrating angle measurement and distance measurement functions. It is widely used. The distance measurement of the total station includes prism mode and non-prism mode. Among them, the non-prism measurement mode does not need to use a reflective prism, and does not require the cooperation of auxiliary surveyors. It is especially suitable for applications where it is not suitable to place reflective prisms or reflective sheets, such as super large apertures. Ultrasonic flowmeter installation and positioning, tunnel excavation construction, civil construction stakeout and other occasions. ...

Claims

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Application Information

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IPC IPC(8): G01C25/00
Inventor 胡鹤鸣孟涛王池高峰张亮
Owner NAT INST OF METROLOGY CHINA
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