CN108195402B - Total station large-inclination angle measurement error analysis and correction method - Google Patents
Total station large-inclination angle measurement error analysis and correction method Download PDFInfo
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- CN108195402B CN108195402B CN201711420777.3A CN201711420777A CN108195402B CN 108195402 B CN108195402 B CN 108195402B CN 201711420777 A CN201711420777 A CN 201711420777A CN 108195402 B CN108195402 B CN 108195402B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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Abstract
The invention relates to a method for analyzing and correcting a measurement error of a large inclination angle of a total station. The invention has the advantages that: the method has the advantages that the reasons influencing the precision are found out and reasonably avoided, the paying-off precision can be improved to a certain extent, paying-off errors caused by large-inclination-angle measurement are reduced, and the possible potential mounting errors of the head sheave caused by paying-off inaccuracy of the single-rope winch are reduced.
Description
Technical Field
The invention relates to a total station instrument large inclination angle measurement error analysis and correction method.
Background
The total station carries out underground surveying and mapping operation, however, technicians find that certain errors exist in measurement results when the inclination angle is large (according to the current experimental value, when the inclination angle exceeds 20 degrees, errors obviously exist), for example, when a sky wheel chamber is placed through a rope way to lift a cross line) in the application process of the total station, the technicians look up data, currently, no relevant works exist in China, and the technicians refer to some measurement experts and consider that the problems in the aspect really exist
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for analyzing and correcting the measurement error of a large inclination angle of a total station, and the technical scheme of the invention is as follows:
the total station large inclination angle measurement error analysis and correction method adopts a high-low point method and is carried out by four steps.
The four steps are specifically as follows:
step (1), selecting a measuring point with the point number of 1# at the top of a first building main body with the height of h, and then selecting three points with the point numbers of 2#, 3#, and 4# on the open space in front of the first building; wherein the inclination angles of # 2 and # 1 are 30 degrees, the inclination angles of # 3 and # 1 are 50 degrees, and the inclination angles of # 4 and # 1 are 70 degrees;
step (2) erecting the total station on 2#, 3#, 4# in sequence, measuring the coordinate of 1# respectively, and tilting the prism at 1# forward from the vertical position to the position perpendicular to the sight line in the period, and obtaining the observation value when the prism is vertical and the observation value when the prism is perpendicular to the sight line by point numbers 2#, 3#, 4# respectively;
step (3) erecting the total station at the top of a second building main body, wherein the height of the second building main body is 1/2 of the height of the first building main body, and coordinates of 1#, 2#, 3#, and 4# are respectively measured at the top of the second building main body and are used for checking experimental data; in the step, the inclination angles of the total station and the 2#, 3#, 4# measuring points are ensured to be less than 10 degrees;
step (4) through comparing and analyzing the experimental data, finding out the reason that the inclination angle influences the measurement precision of the total station, analyzing the measurement error, and then correcting, wherein in the step (4), according to the analysis result, the prism lens is adjusted according to the inclination angle of the sight line of the total station during the measurement of the total station, and the measurement result is correct when the prism lens is perpendicular to the sight line; when the prism is kept vertical, large inclination angle measurement is carried out during large height difference measurement, and when the prism lens is kept vertical, the correction method is f =3-3 × sin α, wherein α represents inclination angle degrees.
The invention has the advantages that: the method has the advantages that the reasons influencing the precision are found out and reasonably avoided, the paying-off precision can be improved to a certain extent, paying-off errors caused by large-inclination-angle measurement are reduced, and the possible potential mounting errors of the head sheave caused by paying-off inaccuracy of the single-rope winch are reduced.
Drawings
Fig. 1 is a distribution diagram of a point number, a first building body, and a second building body of the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and substitutions are intended to be within the scope of the invention.
The invention relates to a method for analyzing and correcting a measurement error of a large inclination angle of a total station.
The four steps are specifically as follows:
step (1), selecting a measuring point with the point number of 1# at the top of a first building main body 1 with the height of h, and then selecting three points with the point numbers of 2#, 3#, and 4# on an open space in front of the first building 1; wherein the inclination angles of 2# and 1# are 30 degrees, the inclination angles of 3# and 1# are 50 degrees, and the inclination angles of 4# and 1# are 70 degrees;
step (2) erecting the total station on 2#, 3#, and 4# in sequence, measuring the coordinate of 1# respectively, and tilting the prism at 1# forward from the vertical position to a position perpendicular to the sight line in the period, and obtaining an observation value when the prism is vertical and an observation value when the prism is perpendicular to the sight line respectively by point numbers 2#, 3#, and 4#;
step (3) erecting the total station at the top of a second building main body 2, wherein the height of the second building main body is 1/2 of the height of the first building main body, and coordinates of 1#, 2#, 3#, and 4# are respectively measured at the top of the second building main body and are used for checking experimental data; in the step, the inclination angles of the total station and the 2#, 3#, 4# measuring points are guaranteed to be less than 10 degrees;
the measured data are shown in table 1,
total station instrument large inclination angle measurement error analysis test data and conclusion
TABLE 1
Where the instrument is at a distance, the total station is at the second building body and at a close distance is at the first building body.
Step (4) through comparing and analyzing the experimental data, finding out the reason that the inclination angle influences the measurement precision of the total station, analyzing the measurement error, and then correcting, wherein in the step (4), according to the analysis result, the prism lens is adjusted according to the inclination angle of the sight line of the total station during the measurement of the total station, and the measurement result is correct when the prism lens is perpendicular to the sight line; when the prism is kept vertical, large inclination angle measurement is carried out during large height difference measurement, and when the prism lens is kept vertical, the correction method of the distance correction value is f =3-3 × sin α, wherein α represents the inclination angle degree.
Claims (1)
1. The total station large inclination angle measurement error analysis and correction method is characterized in that the method adopts a high-low point method and is carried out by four steps;
the four steps are specifically as follows:
selecting a measuring point with the point number of 1# at the top of a first building main body with the height of h, and then selecting three points with the point numbers of 2#, 3#, and 4# on the vacant land in front of the first building; wherein the inclination angles of # 2 and # 1 are 30 degrees, the inclination angles of # 3 and # 1 are 50 degrees, and the inclination angles of # 4 and # 1 are 70 degrees;
step (2) erecting the total station on 2#, 3#, and 4# in sequence, measuring the coordinate of 1# respectively, and tilting the prism at 1# forward from the vertical position to a position perpendicular to the sight line in the period, and obtaining an observation value when the prism is vertical and an observation value when the prism is perpendicular to the sight line respectively by point numbers 2#, 3#, and 4#;
step (3) erecting the total station at the top of a second building main body, wherein the height of the second building main body is 1/2 of the height of the first building main body, and coordinates of 1#, 2#, 3#, and 4# are respectively measured at the top of the second building main body and are used for checking experimental data; in the step, the inclination angles of the total station and the 2#, 3#, 4# measuring points are ensured to be less than 10 degrees;
step (4) through comparing and analyzing the experimental data, finding out the reason that the inclination angle influences the measurement precision of the total station, analyzing the measurement error, and then correcting;
in the step (4), according to the analysis result, the prism lens is adjusted according to the total station sight line inclination angle during the measurement by the total station, and the measurement result is correct until the measurement result is perpendicular to the sight line; when the prism is kept vertical, large inclination angle measurement is carried out during large height difference measurement, and when the prism lens is kept vertical, a correction method of a distance correction value is f =3-3 × sin α, wherein α represents inclination angle degrees.
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| CN108195402B true CN108195402B (en) | 2023-03-31 |
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| US4108539A (en) * | 1976-11-18 | 1978-08-22 | Hewlett-Packard Company | Reflecting lens system |
| US8478492B2 (en) * | 1998-11-27 | 2013-07-02 | Caterpillar Trimble Control Technologies, Inc. | Method and system for performing non-contact based determination of the position of an implement |
| CN102607516B (en) * | 2012-04-17 | 2015-07-08 | 中国核工业二三建设有限公司 | Method for measuring standard elevation in nuclear power engineering |
| CN103499340B (en) * | 2013-09-27 | 2015-06-10 | 河海大学 | Measurement device and measurement method for vertical great-height difference height transmission |
| CN105466455B (en) * | 2015-12-18 | 2018-01-19 | 中国科学院西安光学精密机械研究所 | A kind of angle measurement accuracy calibration system and method |
| CN110906123A (en) * | 2019-12-24 | 2020-03-24 | 中矿金业股份有限公司 | Special target device and method for measuring midpoint triangle elevation of total station |
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