CN105466455B - Angle measurement precision calibration system and method - Google Patents
Angle measurement precision calibration system and method Download PDFInfo
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- CN105466455B CN105466455B CN201510956488.XA CN201510956488A CN105466455B CN 105466455 B CN105466455 B CN 105466455B CN 201510956488 A CN201510956488 A CN 201510956488A CN 105466455 B CN105466455 B CN 105466455B
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Abstract
The invention belongs to the technical field of precision optical testing, and particularly relates to an angle measurement precision calibration system and method. The system comprises a total station, an electric two-dimensional translation table, a cooperation target and a circular prism; an optical axis of the optical measurement component to be calibrated is perpendicular to a translation surface of the electric two-dimensional translation table and passes through a coordinate origin of the electric two-dimensional translation table; the total station is positioned beside the optical measurement component to be calibrated, and the center height of the total station is equal to the height of the coordinate origin of the electric two-dimensional translation table; the cooperation target is arranged at a coordinate origin of the electric two-dimensional translation table; the circular prism is arranged in the direction of a transverse shaft of the electric two-dimensional translation table and is positioned beside the cooperative target, and the center of the circular prism is equal to the center of the cooperative target in height; the distance between the optical measurement component to be calibrated and the total station and the electric two-dimensional translation table is 27-30 m. The invention can meet the high requirement of angle measurement precision and lead the angle measurement error to be small.
Description
Technical field
The invention belongs to precision optics technical field of measurement and test, and in particular to a kind of angle measurement accuracy calibration system and method.
Background technology
Optical measurement is mainly used in the measurement for deviateing Small object main shaft angle, is now widely used for target knowledge
Not, the technical field such as target detection.Angle measurement accuracy is the mostly important technical indicator of optical calibrating measuring part, is to weigh optics
The good and bad standard of measuring part performance.
In the calibration process of angle measurement accuracy, the true value calibrated is to determine the key factor of measurement error, therefore true value
Demarcation is often very high to test equipment, method and the requirement of personnel.
When required precision is relatively low, existing method is to use target plate, determines that a central point makes it on target plate
Overlapped with the origin of optical calibrating measuring part, choosing diverse location in each quadrant uses tape measure translational movement, subsequent root
The true value for deviateing main shaft angle, the measured value with optical measurement are obtained according to the distance between target plate and optical measurement
It is compared to obtain angle measurement accuracy.
But when angle measurement accuracy requires higher, the above method can not accurately measure angle measurement accuracy.First, the measurement of tape measure
Limited precision；Second, tape measure accurately alignment target point, the inclination of tape measure and collimating fault can all can not cause to survey in measurement process
Measure error.Measurement distance be 20m~70m under conditions of, by both combination bands come angle measurement accuracy error be 0.01mrad~
Between 0.05mrad, the more near then angle measurement accuracy error of distance is bigger.
The content of the invention
In order to solve above-mentioned technical problem present in background technology, the invention provides one kind can meet high request angle measurement
The small a kind of angle measurement accuracy calibration system of precision, angle error and method.
The present invention technical solution be：
The invention provides a kind of angle measurement accuracy calibration system, including total powerstation, electronic two-dimension translational platform, cooperative target,
Circle prism；
The optical axis of optical measurement to be calibrated is perpendicular to electronic two-dimension translational stage translation face and passes through electronic two-dimension translational
The origin of coordinates of platform；
The total powerstation is located at by optical measurement to be calibrated, and its center is high with the coordinate of the electronic two-dimension translational platform
Origin is contour；
The cooperative target is arranged at the origin of coordinates of electronic two-dimension translational platform；
The round prism is arranged on the X direction of electronic two-dimension translational platform and by cooperative target, the center of circle prism
It is contour with cooperative target center；
The optical measurement to be calibrated and the distance of total powerstation and electronic two-dimension translational platform are 27m~30m.
In order to which total powerstation is easily installed, the system also includes being erected at below total powerstation and is used to adjust the three of total powerstation height
Foot stool.
It should be noted that the part of the system has certain technical indicator, it is respectively：Electronic two-dimension translational stage translation
Scope is not less than 600mm；Circle prism bore is not less than 40mm, and is coated with reflectance coating, reflectivity 99%.
According to the description of above-mentioned angle measurement accuracy calibration system, now to being retouched using the angle measurement accuracy scaling method of the system
State, this method comprises the following steps：
1) position：
1.1) riding position of optical measurement to be calibrated is determined with total powerstation；
1.2) optical measurement to be calibrated is placed on total powerstation position, it is desirable to which its optical axis is flat perpendicular to electronic two dimension
The optical measurement to be calibrated of moving stage translational plane and the origin of coordinates by electronic two-dimension translational platform；
1.3) total powerstation is placed on by optical measurement to be calibrated, it is desirable to which total powerstation center is high with electronic two-dimension translational
The origin of coordinates of platform is contour；
2) measure：
2.1) cooperative target is placed on to the origin of coordinates of electronic two-dimension translational platform, it is flat that circle prism is arranged on into electronic two dimension
The X-direction of moving stage and by the cooperative target, it is desirable to which it justifies the center of prism and cooperative target center is contour；
2.2) circle prism rib point is aimed at total powerstation, reads the orientation values A of now total powerstation1Peace is away from L1；
2.3) electronic two-dimension translational platform is controlled to move to any bit in optical measurement visual field to be calibrated along X direction
Put, aim at circle prism rib point with total powerstation, read the orientation values A of now total powerstation2, pitch value E1Peace is away from L2；
2.4) electronic two-dimension translational platform is controlled to move to any bit in optical measurement visual field to be calibrated longitudinally axially again
Put, aim at circle prism rib point with total powerstation, read the pitch value E of now total powerstation2；
2.5) cooperative target is obtained by optical calibrating measuring part to be calibrated and deviates optical measurement main shaft to be calibrated
Deviation angle θ；
3) demarcate：
3.1) by formula (1) and formula (2) computer azimuth angle and pitching angle：
A=| A2-A1|…………(1)
E=| E2-E1|…………(2)
3.2) X is calculated to translation distance by formula (3)：
3.3) calculating Z-direction translation distance by formula (4) is：
Z=L2·tan E…………(4)
3.4) angle measurement accuracy Δ of formula (5) computational rules under is pressed：
In formula：
A-orientation angle；
E1、E2The pitch value that-total powerstation measures；
E-pitching angle；
L1、L2- total powerstation measure it is flat away from；
The transverse translation distance of X-electronic two-dimension translational platform；
The longitudinal translation distance of Z-electronic two-dimension translational platform；
L-optical measurement to be calibrated and the distance of electronic two-dimension translational platform；
θ-step 2.5, which is surveyed, deviates main shaft angle；
Δ-angle measurement accuracy.
It is an advantage of the invention that：
1st, high efficiency.Present invention employs total powerstation, can coordinate with circle prism and directly read plan range, ensure on an equal basis
Under conditions of precision, time of measuring can be made to shorten more than half.
2nd, high accuracy.Present invention employs total powerstation and electronic two-dimension translational platform, and it is flat to obtain electronic two dimension by total powerstation
The translation distance of moving guide rail in moving stage, and thus obtain angle measurement accuracy, eliminate by tape band Lai measurement error, meanwhile,
Whole process is measured using total powerstation, improves pointing accuracy, reduces the error for aiming at and bringing.
Brief description of the drawings
Fig. 1 is the test schematic diagram of angle measurement accuracy calibration system provided by the present invention.
Embodiment
The invention provides a kind of angle measurement accuracy calibration system and method, and referring to Fig. 1, the system includes total powerstation 2, circle rib
Mirror 3, cooperative target 4, electronic two-dimension translational platform 5；
The optical axis of optical measurement 1 to be calibrated is perpendicular to the electronic translational plane of two-dimension translational platform 5 and flat by electronic two dimension
The origin of coordinates of moving stage 5；
Total powerstation 2 is located at by optical measurement 1 to be calibrated, and its center is high with the coordinate of the electronic two-dimension translational platform 5
Origin is contour；
Cooperative target 4 is arranged at the origin of coordinates of electronic two-dimension translational platform 5；
Circle prism 3 is arranged on the X direction of electronic two-dimension translational platform 5 and by cooperative target 4, its center and cooperation
The center of target 4 is contour；
Optical measurement 1 to be calibrated and the distance of total powerstation 2 and electronic two-dimension translational platform 5 are 27m~30m.
Total powerstation 2 in the system is placed on tripod, electronic 5 liang of translation directions of two-dimension translational platform respectively with total powerstation
2 visual graticle horizontal hairs are parallel with vertical hair；Total powerstation 2 is equal with the distance of electronic 5 liang of translating rails of two-dimension translational platform
Total powerstation has display screen, the azimuth of measurable target and the angle of pitch, and can be with circle prism conjunction measuring whole station
The distance between instrument and circle prism, and display on a display screen, can be calculated, be in measurement distance in the form of angle and distance
During 20m~70m, the angle measurement accuracy error brought by total powerstation is between 0.002mrad~0.003mrad.
Wherein it should be noted that, the electronic range of translation of two-dimension translational platform 5 of the system is not less than 600mm.3 mouthfuls of prism of circle
Footpath is not less than 40mm, and is coated with highly reflecting films, and reflectivity can reach 99%.
Cooperative target can send laser and be received by optical measurement to be calibrated, obtain deviateing main shaft angle.
Test equipment is disposed according to Fig. 1, by taking the Ith quadrant as an example, method of the invention is as follows：
Step 1) positions：
Step 1.1) determines the riding position of optical measurement to be calibrated with total powerstation；
Specific practice is：Select the place of steady shock insulation to dispose tripod, total powerstation is installed on tripod, by total powerstation
Leveling, dispose electronic two-dimension translational platform vertically at predetermined distance, use hand-held stadia surveying total powerstation to bidimensional translation stage
The distance of the right and left is simultaneously adjusted to equidistant, while adjusts bidimensional translation stage vertical direction using vertical；It is high to adjust tripod
Degree, make the bidimensional translation stage origin of coordinates and total powerstation center contour, adjustment bidimensional translation stage, make its two translation direction respectively with entirely
The visual graticle horizontal hair of instrument of standing is parallel with vertical hair；Circle prism is fixed at the origin of coordinates of bidimensional translating rails, used
For total station survey to bidimensional translation stage distance, adjustment total powerstation front and back position makes it with bidimensional translation stage distance be predetermined distance；
Optical measurement to be calibrated is placed on total powerstation position by step 1.2), it is desirable to which its optical axis is perpendicular to electronic two
Tie up the optical measurement to be calibrated of translation stage translational plane and the origin of coordinates by electronic two-dimension translational platform；
Total powerstation is placed on by optical measurement to be calibrated by step 1.3), it is desirable to which total powerstation center is high with electronic two dimension
The origin of coordinates of translation stage is contour；
Step 2) measures：
Cooperative target is placed on the origin of coordinates of electronic two-dimension translational platform by step 2.1), and circle prism is arranged on into electronic two
Tie up the X-direction of translation stage and by cooperative target, it is desirable to which it justifies the center of prism and cooperative target center is contour；
Step 2.2) aims at circle prism rib point with total powerstation, reads the orientation values A of now total powerstation1Peace is away from L1；
Step 2.3) controls electronic two-dimension translational platform to move to optical measurement to be calibrated along X direction (X-direction)
Any position in visual field, circle prism rib point is aimed at total powerstation, reads the orientation values A of now total powerstation2, pitch value E1Peace away from
L2；
Step 2.4) controls electronic two-dimension translational platform, and (Z-direction) moves to optical measurement to be calibrated longitudinally axially again
Any position in visual field, circle prism rib point is aimed at total powerstation, reads the pitch value E of now total powerstation2；
Step 2.5) obtains cooperative target by optical calibrating measuring part to be calibrated and deviates optical measurement master to be calibrated
(the optical measurement main shaft to be calibrated said herein refers to optical measurement to be calibrated in itself to the deviation angle θ of axle in fact
Optical axis)；
Step 3) is demarcated：
Step 3.1) is by formula (1) and formula (2) computer azimuth angle and pitching angle：
A=| A2-A1|…………(1)
E=| E2-E1|…………(2)
Step 3.2) calculates X to translation distance by formula (3)：
Step 3.3) calculates Z-direction translation distance by formula (4)：
Z=L2·tan E…………(4)
Step 3.4) presses angle measurement accuracy Δ of formula (5) computational rules under：
In formula：
A-orientation angle；
E1、E2The pitch value that-total powerstation measures；
E-pitching angle；
L1、L2- total powerstation measure it is flat away from；
The transverse translation distance of X-electronic two-dimension translational platform；
The longitudinal translation distance of Z-electronic two-dimension translational platform；
L-optical measurement to be calibrated and the distance of electronic two-dimension translational platform；
θ-step 2.5, which is surveyed, deviates main shaft angle；
Δ-angle measurement accuracy.
By can be calculated, when measurement distance is 20m~70m, the angle measurement accuracy error of this method can reach
Between 0.002mrad~0.003mrad.
Claims (4)
- A kind of 1. angle measurement accuracy calibration system, it is characterised in that：Including total powerstation, electronic two-dimension translational platform, cooperative target, circle rib Mirror；The optical axis of optical measurement to be calibrated is perpendicular to electronic two-dimension translational stage translation face and passes through electronic two-dimension translational platform The origin of coordinates；The total powerstation is located at by optical measurement to be calibrated, and its center is high with the origin of coordinates of the electronic two-dimension translational platform It is contour；The cooperative target is arranged at the origin of coordinates of electronic two-dimension translational platform；The round prism is arranged on the X direction of electronic two-dimension translational platform and by cooperative target, the center of circle prism and conjunction It is contour to make target's center；The optical measurement to be calibrated and the distance of total powerstation and electronic two-dimension translational platform are 27m~30m.
- 2. angle measurement accuracy calibration system according to claim 1, it is characterised in that：Also include being erected at below total powerstation and use In the tripod of regulation total powerstation height.
- 3. angle measurement accuracy calibration system according to claim 1 or 2, it is characterised in that：The electronic two-dimension translational platform is put down Move scope and be not less than 600mm；The round prism bore is not less than 40mm, and is coated with reflectance coating, reflectivity 99%.
- 4. the angle measurement accuracy scaling method based on the angle measurement accuracy calibration system described in claim 1, it is characterised in that including with Lower step：1) position：1.1) riding position of optical measurement to be calibrated is determined with total powerstation；1.2) optical measurement to be calibrated is placed on total powerstation position, it is desirable to which its optical axis is perpendicular to electronic two-dimension translational platform Translational plane simultaneously passes through the origin of coordinates of electronic two-dimension translational platform；1.3) total powerstation is placed on by optical measurement to be calibrated, it is desirable to which total powerstation center is high with electronic two-dimension translational platform The origin of coordinates is contour；2) measure：2.1) cooperative target is placed on to the origin of coordinates of electronic two-dimension translational platform, circle prism is arranged on electronic two-dimension translational platform X-direction and by the cooperative target, it is desirable to it justifies the center of prism and cooperative target center is contour；2.2) circle prism rib point is aimed at total powerstation, reads the orientation values A of now total powerstation1Peace is away from L1；2.3) control electronic two-dimension translational platform to move to any position in optical measurement visual field to be calibrated along X direction, use Total powerstation aims at circle prism rib point, reads the orientation values A of now total powerstation2, pitch value E1Peace is away from L2；2.4) control electronic two-dimension translational platform to move to any position in optical measurement visual field to be calibrated longitudinally axially again, use Total powerstation aims at circle prism rib point, reads the pitch value E of now total powerstation2；2.5) deviation angle of cooperative target deviation optical measurement main shaft to be calibrated is obtained by optical measurement to be calibrated θ；3) demarcate：3.1) by formula (1) and formula (2) computer azimuth angle and pitching angle：A=| A2-A1|…………(1)E=| E2-E1|…………(2)3.2) X is calculated to translation distance by formula (3)：<mrow> <mi>X</mi> <mo>=</mo> <msqrt> <mrow> <msup> <msub> <mi>L</mi> <mn>1</mn> </msub> <mn>2</mn> </msup> <mo>+</mo> <msup> <msub> <mi>L</mi> <mi>2</mi> </msub> <mn>2</mn> </msup> <mo>-</mo> <mn>2</mn> <msub> <mi>L</mi> <mi>1</mi> </msub> <msub> <mi>L</mi> <mn>2</mn> </msub> <mi>cos</mi> <mi>A</mi> </mrow> </msqrt> <mo>...</mo> <mrow> <mo>(</mo> <mn>3</mn> <mo>)</mo> </mrow> </mrow>3.3) calculating Z-direction translation distance by formula (4) is：Z=L2·tanE…………(4)3.4) angle measurement accuracy Δ of formula (5) computational rules under is pressed：<mrow> <mi>&Delta;</mi> <mo>=</mo> <mo>|</mo> <msup> <mi>tan</mi> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </msup> <mrow> <mo>(</mo> <mfrac> <msqrt> <mrow> <msup> <mi>X</mi> <mn>2</mn> </msup> <mo>+</mo> <msup> <mi>Z</mi> <mn>2</mn> </msup> </mrow> </msqrt> <mi>L</mi> </mfrac> <mo>)</mo> </mrow> <mo>-</mo> <mi>&theta;</mi> <mo>|</mo> <mo>...</mo> <mrow> <mo>(</mo> <mn>5</mn> <mo>)</mo> </mrow> <mo>,</mo> </mrow>In formula：A-orientation angle；E1、E2The pitch value that-total powerstation measures；E-pitching angle；L1、L2- total powerstation measure it is flat away from；The transverse translation distance of X-electronic two-dimension translational platform；The longitudinal translation distance of Z-electronic two-dimension translational platform；L-optical measurement to be calibrated and the distance of electronic two-dimension translational platform；θ-step 2.5, which is surveyed, deviates main shaft angle；Δ-angle measurement accuracy.
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| CN109141468A (en) * | 2017-06-15 | 2019-01-04 | 北京航天计量测试技术研究所 | The caliberating device at spaceborne mapping system reference attitude angle in thermal vacuum environment |
| CN108195402B (en) * | 2017-12-25 | 2023-03-31 | 中矿金业股份有限公司 | Total station large-inclination angle measurement error analysis and correction method |
| CN109470656A (en) * | 2018-12-26 | 2019-03-15 | 北京工业大学 | A kind of Novel bidirectional reflectance distribution function fast testing system and method |
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