Long distance measurement method using parallel control network of laser tracker and total station

Abstract

The invention discloses a method for long-distance measurement using a laser tracker and a total station by using a parallel control network. The method uses the laser tracker and the total station for joint measurement, giving full play to the respective advantages of the two instruments, and can complete the measurement task of long-distance equipment without complicated adjustment calculations. In addition, the method has been verified by the parallel control network, making the measurement data more reliable and accurate.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, and in particular to a method for long-distance measurement using a parallel control network using a laser tracker and a total station. Background Art

[0002] The total station has the advantages of small angle measurement error and long measurement distance, while the laser tracker has the advantage of high distance measurement accuracy. Due to the difference in measurement principles, it is difficult to conduct joint measurement between the two. There are some measurement methods for joint measurement, but they need to go through complex adjustment calculations and the verification of parallel control networks to make the measurement data more reliable and accurate. The present invention cleverly utilizes the angle measurement advantages of the total station for layout and the advantages of the laser tracker for establishing a coordinate system, and can achieve joint measurement of the laser tracker and the total station without any complex calculations.

[0003] Comparative Data 1: A method for measuring the straightness and flatness of long-distance tracks

[0004] The invention discloses a method for measuring the straightness and flatness of a long-distance track. The coordinate value of the center point of each mileage position of the track is measured by the reference line function of a total station, and the straightness deviation value and the flatness deviation value of each mileage position are directly obtained. Then, the flatness and straightness of the track can be obtained by simple calculation. Compared with the measurement method, the accuracy of the measurement by the combined measurement method of a laser tracker and a total station is significantly improved. Summary of the invention

[0005] The purpose of the present invention is to provide a method for long-distance measurement using a laser tracker and a total station using a parallel control network. The method uses the laser tracker and the total station for joint measurement, giving full play to the respective advantages of the two instruments, and can complete the measurement task of long-distance equipment without complex adjustment calculations. In addition, the method has been verified by the parallel control network, making the measurement data more reliable and accurate.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a method for long-distance measurement using a laser tracker and a total station using a parallel control network, comprising:

[0008] 1) Set up the total station at the first station position or the second station position, level the total station and align it with the No. 1 control point or the No. 2 control point, aim at the No. 2 control point or the No. 1 control point, set the angle to zero, and lock it in the horizontal direction;

[0009] 2). Place the theodolite target ball on the laser tracker control point, use the total station to aim at the center point of the theodolite target ball, make the center point of the theodolite target ball and the No. 1 and No. 2 control points on the same straight line, and use glue to fix the laser tracker control point in a stable position;

[0010] 3). Using the method in step 2), place a laser tracker control point every 8 meters and number them from 4-1 to 4-n;

[0011] 4) As in step 1), set up the total station at the third or fourth station, level it and align it with the third or fourth control point, aim at the fourth or third control point, set the angle to zero, and lock it in the horizontal direction;

[0012] 5). Same as step 2), use the total station to set out the laser tracker control point and the third and fourth control points on the same straight line, and fix them;

[0013] 6). Using the method in step 5), place a laser tracker control point every 8 meters and number them from 4-I to 4-N;

[0014] 7) Set up the laser tracker at the 2-n station, level, calibrate, and establish the geoid, then place the target ball on the laser tracker control points at positions 4-(n-5) to 4-n and the parallel control points that can be detected, use the laser tracker to take point measurements, and project these measurement points onto the geoid;

[0015] 8). Use the computer software that comes with the laser tracker to fit the laser tracker control point 4-(n-5) to the control point 4-n as a straight line as line 1; similarly, fit the laser tracker control point 4-(N-V) to the control point 4-N as a straight line as line 2;

[0016] 9). Use the software provided by the laser tracker to analyze and determine the parallelism between Line 2 and Line 1. If they are not parallel, analyze the cause, conduct a comprehensive analysis of the lofting accuracy, the accuracy of the original control points, and the on-site measurement environment. After finding the cause, re-measure. If they are parallel, proceed to the next step.

[0017] 10). Establish the coordinate system: First element: the measured coordinates of the laser tracker control point 4-(n-5); Second element: Line 1; Third element: the geoid;

[0018] 11). Measure the long-distance device a and the long-distance device b corresponding to the control point 4-(n-5) and the control point 4-n, and measure the degree of deviation of the device according to the y value of the coordinate system;

[0019] 12). Repeat steps 7), 8), 9), 10), and 11) until all devices are measured.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are:

[0021] The invention relates to a method for long-distance measurement using a laser tracker and a total station in combination with a parallel control network, which is used for long-distance equipment deviation detection. The method is characterized in that the laser tracker and the total station are used for joint measurement, which gives full play to the respective advantages of the two instruments and completes the measurement task of the long-distance equipment without complicated adjustment calculation.

[0022] The invention does not need to perform complicated adjustment calculations, has high measurement accuracy, and has been verified by a parallel control network, making the measurement data more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 A top view of the measuring method of the present invention;

[0025] Explanation of the accompanying drawings: 1-total station (1-n represents the position of the nth station); 2-laser tracker (2-n represents the installation position of the nth station of the laser tracker); 3-total station control point (3-n represents the nth control point); 4-laser tracker control point (4-n represents the nth laser tracker control point in the first column; 4-N represents the Nth laser tracker control point in the second column); 5-long-distance device a; 6-long-distance device b. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 The implementation of the technical solution is further described in detail in order to more clearly describe the structure and working principle of the ground gate.

[0027] A method for long-distance measurement using a laser tracker and a total station using a parallel control network, the specific implementation method is:

[0028] (1) Set up the total station 1 at the first station position 1-1 (or 1-2), level the total station 1 and align it with the first control point 3-1 (or 3-2), aim at the second control point 3-2 (or 3-1), set the angle to zero, and lock it in the horizontal direction;

[0029] (2) Place the theodolite target sphere on the laser tracker control point 4, use the total station 1 to aim at the center point of the theodolite target sphere, make the center point of the theodolite target sphere and the No. 1 control point 3-1 and the No. 2 control point 3-2 in the same straight line, and use 502 glue to fix the laser tracker control point 4 in a stable position;

[0030] (3) Using the method in step (2), place a laser tracker control point 4 every 8 meters and number them from 4-1 to 4-n;

[0031] (4) As in step (1), set up the total station 1 at the third station position 1-3 (or 1-4), level it and align it with the total station control point 3-3 (or 3-4), aim at the total station control point 3-4 (or 3-3), set the angle to zero, and lock it in the horizontal direction;

[0032] (5) As in step (2), use a total station to set out laser tracker control point 4 so that it is on the same straight line as total station control point 3-3 and total station control point 3-4, and fix them;

[0033] (6) Using the method in step (5), place a laser tracker control point 4 every 8 meters and number them from 4-I to 4-N;

[0034] (7) Set up the laser tracker 2 at the 2-n station, level and calibrate, and establish the geoid, then place the target ball on the laser tracker control points 4 and parallel control points that can be detected at positions 4-(n-5) to 4-n, perform point measurement using the laser tracker 2, and project these measurement points onto the geoid;

[0035] (8) Use the computer software provided by the laser tracker to fit the control point 4-(n-5) to the control point 4-n of the laser tracker into a straight line (straight line 1); similarly, fit the control point 4-(N-V) to the control point 4-N of the laser tracker into a straight line (straight line 2).

[0036] (9) Use the software provided by the laser tracker to analyze and determine the parallelism of Line 2 and Line 1. If they are not parallel, analyze the cause and conduct a comprehensive analysis of the layout accuracy, original control point accuracy and on-site measurement environment. Once the cause is found, re-measure. If they are parallel, proceed to the next step.

[0037] (10) Establishing a coordinate system: First element: the measured coordinates of the position of the laser tracker control point 4-(n-5); Second element: Line 1; Third element: the geoid;

[0038] (11) Measure the long-distance device a5 and the long-distance device b6 corresponding to the control point 4-(n-5) and the control point 4-n, and measure the degree of deviation of the device according to the y value of the coordinate system;

[0039] (12) Repeat steps (7)(8)(9)(10)(11) until all devices have been measured.

[0040] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for long-distance measurement using a laser tracker and a total station using a parallel control network, characterized in that: include: 1) Set up the total station (1) at the first station position (1-1) or the second station position (1-2), level the total station (1) and align it with the No. 1 control point (3-1) or the No. 2 control point (3-2), aim at the No. 2 control point (3-2) or the No. 1 control point (3-1), set the angle to zero, and lock it in the horizontal direction; 2) Place the theodolite target ball on the laser tracker control point (4), use the total station (1) to aim at the center point of the theodolite target ball, so that the center point of the theodolite target ball and the No. 1 control point (3-1) and the No. 2 control point (3-2) are on the same straight line, and use glue to fix the laser tracker control point (4) in a stable position; 3). Using the method in step 2), place a laser tracker control point (4) every 8 meters and number them from 4-1 to 4-n; 4) As in step 1), set up the total station (1) at the third station position (1-3) or the fourth station position (1-4), level it and align it with the third control point (3-3) or the fourth control point (3-4), aim at the fourth control point (3-4) or the third control point (3-3), set the angle to zero, and lock it in the horizontal direction; 5). Same as step 2), use the total station to set out the laser tracker control point (4) and the third control point (3-3) and the fourth control point (3-4) in the same straight line, and fix them; 6). Using the method in step 5), place a laser tracker control point (4) every 8 meters and number them from 4-I to 4-N; 7) Set up the laser tracker (2) at the 2-n station, level, calibrate, and establish the geoid, then place the target ball on the laser tracker control points (4) at positions 4-(n-5) to 4-n and the parallel control points that can be detected, use the laser tracker (2) to take point measurements, and project these measurement points onto the geoid; 8). Use the computer software that comes with the laser tracker to fit the laser tracker control point 4-(n-5) to the control point 4-n as a straight line as line 1; similarly, fit the laser tracker control point 4-(N-V) to the control point 4-N as a straight line as line 2; 9). Use the software provided by the laser tracker to analyze and determine the parallelism between Line 2 and Line 1. If they are not parallel, analyze the cause, conduct a comprehensive analysis of the lofting accuracy, the accuracy of the original control points, and the on-site measurement environment. After finding the cause, re-measure. If they are parallel, proceed to the next step. 10). Establish the coordinate system: First element: the measured coordinates of the laser tracker control point 4-(n-5); Second element: Line 1; Third element: the geoid; 11). Measure the long-distance device a (5) and the long-distance device b (6) corresponding to the control point 4-(n-5) and the control point 4-n, and measure the degree of deviation of the device according to the y value of the coordinate system; 12). Repeat steps 7), 8), 9), 10), and 11) until all devices are measured.

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