CN102506902B - Device and method for evaluating accuracy of prism-free distance measurement of total station - Google Patents
Device and method for evaluating accuracy of prism-free distance measurement of total station Download PDFInfo
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- CN102506902B CN102506902B CN201110393729.6A CN201110393729A CN102506902B CN 102506902 B CN102506902 B CN 102506902B CN 201110393729 A CN201110393729 A CN 201110393729A CN 102506902 B CN102506902 B CN 102506902B
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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
The present invention relates to a kind of apparatus for evaluating and method, in particular, relate to the Accuracy evaluation device and method that a kind of total powerstation finds range without prism.
Background technology
Total powerstation a kind ofly integrates light, mechanical, electrical hi-tech surveying instrument, is the instrument of surveying and mapping system integrating measurement of angle and range observation function, and application widely.The range observation of total powerstation comprises prism pattern and without prism pattern, wherein, no prism leveling pattern can not use reflecting prism, subsidiary personnel are not needed to coordinate, be particularly suitable for placing the place application of reflecting prism or reflector plate, such as the occasions such as location, tunnel drivage construction, civil engineering setting-out installed by super large caliber ultrasonic flowmeter.But total powerstation is general only for its prism distance measurement mode when examining and determine, and the verification result obtained like this cannot ensure the accuracy without prism distance measurement mode.
The accuracy that total powerstation is found range without prism pattern and target materials, incident angle, incident distance dependent, when the reflective severity of target material, incident angle are less, range accuracy reduces even cannot obtain valid data.So grasp the range accuracy level of total powerstation under different measuring condition, avoid disadvantageous service condition, give measurement result rational uncertainty when cannot avoid, this has very important significance to reasonable employment total powerstation as far as possible.
Summary of the invention
The object of this invention is to provide a kind of device and method total powerstation being carried out to accuracy of measurement assessment without prism distance measurement mode.
The invention provides a kind of for the Accuracy evaluation device of total powerstation without prism distance measurement mode, it comprises rotatable and graduated first stationary platform of tool and the second stationary platform; The second positioning element being positioned at the first positioning element in the first stationary platform and being positioned in the second stationary platform; And to the dimensional measuring instrument that the distance between the anchor point of the first positioning element and the anchor point of the second positioning element is measured; Described total powerstation and described first positioning element, the distribution triangular in shape of described second positioning element, by the coordinate of described total station survey first positioning element anchor point coordinate and the second positioning element anchor point.
Wherein, the end face of the first positioning element and the second positioning element posts detected materials or described first positioning element and the second positioning element to be processed by detected materials.
Wherein, described total powerstation and the first positioning element, the second positioning element are in same level height.
Wherein, described first stationary platform and described second stationary platform are arranged on the graduated slide rail of same tool.
Wherein, described first positioning element and the second positioning element are right cylinder, have the anchor point of cross mark at a cylindrical circle center, side end face.
The invention provides that a kind of it adopts above-mentioned apparatus for evaluating for the accuracy of measurement appraisal procedure of total powerstation without prism distance measurement mode, first utilize dimensional measuring instrument to measure the first distance between the anchor point of the first positioning element and the second positioning element; Secondly, by the coordinate of total station survey first positioning element anchor point and the second positioning element anchor point, the second distance between described first positioning element anchor point and the second positioning element anchor point is calculated; Finally, total powerstation range accuracy is obtained by the first distance with comparing of second distance.
Wherein, described first distance is the mean value of repetitive measurement.
Wherein, by changing detected materials on the first positioning element and the second positioning element or changing the first positioning element and the second positioning element, the accuracy of measurement of the total powerstation under different materials condition is analyzed.
Wherein, by rotating the first positioning element and the second positioning element, obtain the accuracy of measurement data of the total powerstation under different incidence angles condition.
Wherein, by changing total powerstation and two positioning element line central point distances, the accuracy of measurement data of the total powerstation under different incident distance condition are obtained.
Distance between two positioning elements carrys out choose reasonable according to available standard length.The precision of finding range without prism due to total powerstation is generally at about 2mm, therefore the accuracy of standard length is generally better than 0.4mm, the instrument such as micrometer inside caliper or portable type measuring arm can be selected to come on-the-spotly to provide an adjustable standard length, or the gauge making some length stabilisation is to provide this standard length.
Can analyzing without the accuracy of measurement under prism pattern total powerstation by apparatus for evaluating of the present invention, obtain and analyze data accordingly, and then determine the measurement capability of the total powerstation under different condition, ensure the reasonable employment of total powerstation without prism pattern.Because linear measure longimetry has a lot of directly application in industrial circle, therefore this assessment result can be applied directly in actual measured results analysis.
Accompanying drawing explanation
Fig. 1 total powerstation is without the apparatus for evaluating schematic diagram of prism distance measurement mode.
Embodiment
For the ease of understanding, below in conjunction with accompanying drawing, the present invention is further explained.
Embodiment 1
As shown in Figure 1, total powerstation 1 is in without under prism pattern, adopts the range accuracy of apparatus for evaluating to total powerstation 1 comprising two stationary platforms and standard length survey instrument (not shown) to assess.Described two stationary platforms are for can rotate and the graduated stationary platform of tool, be respectively the first stationary platform 2 and the second stationary platform 3, specifically, two stationary platforms have circumference type scale, this stationary platform can for manually adjusting the rotating disk of rotating scale, or be motor-driven dial disc.By jig, the first positioning element 4 is fixed in described first stationary platform 2, similarly, in the second stationary platform 3, there is the second positioning element 5, second positioning element 5 can be fixed in described second stationary platform 3, positioning element in two stationary platforms by manually adjusting angle or automatically selecting suitable turned position and rotational angle by programmed control, the first stationary platform and on the first positioning element structure and the second stationary platform and on the structure of the second positioning element identical.
First positioning element 4 and the second positioning element 5, except adopting detected materials and processing, can also stick detected materials at the end face of the first positioning element 4 and the second positioning element 5.For the first positioning element 4 and the second positioning element 5, its shape is preferably right cylinder, but is not limited to right cylinder.As being depicted as cylindrical vertical view in Fig. 1, right cylinder is laterally fixed on the stationary platform, for placing target to be measured or testing sample on the end face of cylindrical circle, further, in order to ensure the accurate evaluation to testing sample or material, preferably detected materials overall processing is adopted to be the first positioning element and the second positioning element.Be preferably the anchor point carrying out measuring or observing with the central point of positioning element, more preferably using the point of crossing of cross mark as the anchor point measured or observe.For the first positioning element processed by detected materials and the second positioning element, anchor point can be determined adding man-hour, and accurately portray cross mark; And for pasting the situation of detected materials on positioning element, then need the anchor point determining testing sample after having pasted, and accurately portray cross mark.Preferred employing coordinate measurment instrument determines that the end face center of circle of positioning element is as anchor point, first the coordinate points on the face of cylinder is gathered, then the coordinate points on cylinder end face is gathered, coordinate points on the face of cylinder is projected to cylinder end face, the plane that coordinate points matching obtains is a standard round, and this round heart is the exact position of anchor point.
The circular end face of the first positioning element 4 and the circular end face of the second positioning element 5 are respectively in the face of total powerstation 1.First stationary platform 2 and the second stationary platform 3 are arranged at a certain distance, and keep two stationary platform levels and highly equal, distance between two positioning elements carrys out choose reasonable according to available standard length, standard length is preferably at more than 1m, and the maximal value that this length is possible is determined by the measurement range of gauge or three coordinate machine.After the first stationary platform 2 and the second stationary platform 3 install, dimensional measuring instrument is adopted to measure the distance between the center of the cross mark of the first positioning element 4 and second component 5, this dimensional measuring instrument can be gauge, owing to being limited by the measuring accuracy of gauge, the occasion higher for accuracy requirement preferably adopts micrometer inside caliper, for improving the accuracy of linear measure longimetry further, portable coordinate measurement arm is more preferably adopted to measure the distance between two anchor points.During measurement, first survey the face of cylinder and select some measurement points, then projecting on end face, namely the center of projection circle is central point, measure the distance L1 between the first positioning element 4 and the projected centre point of the second positioning element 5 by scale or three coordinate machine, this distance is defined as the first distance.The exact value of L1 is obtained by repetitive measurement.
Install and leveling total powerstation 1, total powerstation 1 and the first stationary platform 2 and the second stationary platform 3 posting testing sample are arranged to isosceles triangle shape, are preferably equilateral triangle, utilize tripod three to be adjusted on same surface level.The coordinate of the anchor point on the first positioning element 4 is measured by total powerstation 1, and measure the coordinate of the anchor point on the second positioning element 5, the distance L2 between the first positioning element 4 and the central point of the second positioning element 5 is calculated according to two coordinates of total station survey, this distance is defined as second distance, by L1 and L2 being compared the measurement error value that can obtain total powerstation.In actual measurement process, need to take multiple measurements with total powerstation, add up average and the standard deviation of its measuring distance.The assessment data of total station survey accuracy can be obtained by the average of measurement error value, measuring distance and standard deviation.
In order to verify the accuracy of measurement of total powerstation to same measurement target, under the prerequisite that total powerstation is constant to the distance of positioning element, the anglec of rotation of the first positioning element 4 and the second control assembly 5 can be controlled, and then realize different incident angle α, carry out statistical study according to the range data obtained the total station survey under different incident angles, the accuracy of measurement assessment data of total powerstation under this testing sample material can be obtained.In addition, also by changing total powerstation and two positioning element line central point distances, the accuracy of measurement data of the total powerstation under different incident distance condition are obtained.Further, by the testing sample changing the first positioning element 4 and the second positioning element 5 or change on positioning element, the accuracy of measurement of the total powerstation under different sample condition is analyzed, thus the measurement capability of total powerstation can be grasped.
Embodiment 2
As the distortion of the embodiment of the present invention 1, the content that embodiment 2 is identical with embodiment 1 no longer repeats, can be arranged on the graduated slide rail of tool of a level for the first stationary platform and the second stationary platform, thus facilitate the accurate adjustment of the spacing of the first stationary platform and the second stationary platform, the positioning element be positioned in stationary platform is not limited to right cylinder, as long as ensure that the plane of incidence of the first positioning element and the second positioning element is the shape being easy to determine its central point of rule, by total powerstation to the replacing on the first positioning element and the second positioning element and subsides different testing sample materials thereon, at different incidence angles degree, linear measure longimetry is carried out under incident distance, the accuracy of measurement assessment data of total powerstation can be obtained.
Can analyzing without the accuracy of measurement under prism pattern total powerstation by apparatus for evaluating of the present invention, obtain and analyze data accordingly, and then the measurement capability to the total powerstation determined under different condition, ensure the accuracy without ranging data under prism pattern using total powerstation.
Although the present invention illustrates with reference to its preferred embodiment and describes, but will be understood by those skilled in the art that, when not departing from the spirit and scope of the present invention that the appended claims limit, the various changes of form and details can be carried out.
Claims (6)
1., for the accuracy of measurement apparatus for evaluating of total powerstation without prism distance measurement mode, it comprises rotatable and graduated first stationary platform of tool and the second stationary platform; The second positioning element being positioned at the first positioning element in the first stationary platform and being positioned in the second stationary platform; And to the dimensional measuring instrument that the distance between the anchor point of the first positioning element and the anchor point of the second positioning element is measured; It is characterized in that: described total powerstation and described first positioning element, the distribution triangular in shape of described second positioning element, by the coordinate of the anchor point of described total station survey first positioning element and the second positioning element; Described first stationary platform and described second stationary platform have circumference type scale, described first stationary platform and the second stationary platform be manually adjust rotating scale rotating disk or for motor-driven dial disc; The end face of the first positioning element and the second positioning element posts detected materials, or described first positioning element and the second positioning element are processed by detected materials; Described total powerstation and the first positioning element, the second positioning element are at same level height; Described first stationary platform and described second stationary platform are arranged on the graduated slide rail of same tool; Described first positioning element and the second positioning element are right cylinder, have the anchor point of cross mark at a cylindrical circle center, side end face; Coordinate measurment instrument is adopted to determine that the end face center of circle of positioning element is as anchor point, first the coordinate points on the face of cylinder is gathered, then the coordinate points on cylinder end face is gathered, coordinate points on the face of cylinder is projected to cylinder end face, the plane that coordinate points matching obtains is a standard round, and this round heart is the exact position of anchor point.
2. one kind for the accuracy of measurement appraisal procedure of total powerstation without prism distance measurement mode, it adopts apparatus for evaluating as claimed in claim 1, it is characterized in that: utilize dimensional measuring instrument to measure the first distance between the anchor point of the first positioning element and the second positioning element; By the coordinate of total station survey first positioning element and the second positioning element, calculate the second distance between described first positioning element and the anchor point of the second positioning element; Total station survey accuracy data is obtained with comparing of second distance by the first distance.
3. as claimed in claim 2 for the accuracy of measurement appraisal procedure of total powerstation without prism distance measurement mode, it is characterized in that: described first distance is the mean value of repetitive measurement.
4. as claimed in claim 2 for the accuracy of measurement appraisal procedure of total powerstation without prism distance measurement mode, it is characterized in that: by changing detected materials on the first positioning element and the second positioning element or changing the first positioning element and the second positioning element, the accuracy of measurement of the total powerstation under different materials condition is analyzed.
5. as claimed in claim 2 for the accuracy of measurement appraisal procedure of total powerstation without prism distance measurement mode, it is characterized in that: by rotating the first positioning element and the second positioning element, obtaining the accuracy of measurement data of the total powerstation under different incidence angles condition.
6. as claimed in claim 2 for the accuracy of measurement appraisal procedure of total powerstation without prism distance measurement mode, it is characterized in that: by adjustment total powerstation and two positioning element line central point distances, obtain the accuracy of measurement data of the total powerstation under different incident distance condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110393729.6A CN102506902B (en) | 2011-12-02 | 2011-12-02 | Device and method for evaluating accuracy of prism-free distance measurement of total station |
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| CN201110393729.6A CN102506902B (en) | 2011-12-02 | 2011-12-02 | Device and method for evaluating accuracy of prism-free distance measurement of total station |
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| CN102506902A CN102506902A (en) | 2012-06-20 |
| CN102506902B true CN102506902B (en) | 2015-01-14 |
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| CN104296775B (en) * | 2013-12-27 | 2019-01-18 | 广东省计量科学研究院 | The reflective control system of prism |
| CN104266661B (en) * | 2014-09-23 | 2017-02-22 | 上海烟草集团有限责任公司 | Method for calibrating distance measuring instrument of stacker |
| CN105783811B (en) * | 2016-04-26 | 2018-10-30 | 中国海洋石油集团有限公司 | The detection method of pipe end center of circle three-dimensional coordinate |
| CN107101613B (en) * | 2017-05-11 | 2019-03-12 | 广西水利电力职业技术学院 | A kind of measurement method of total station height of instrument |
| CN109521404B (en) * | 2018-10-12 | 2020-09-04 | 上海交通大学 | FMCW radar-based vibration measurement accuracy evaluation method and system |
| CN117007083B (en) * | 2023-09-22 | 2024-03-05 | 国汽(北京)智能网联汽车研究院有限公司 | Vehicle ranging capability assessment method, system, equipment and medium thereof |
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| CN102062611A (en) * | 2009-11-13 | 2011-05-18 | 中冶天工建设有限公司 | Leveling instrument measurement error reducing method |
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| CN102062611A (en) * | 2009-11-13 | 2011-05-18 | 中冶天工建设有限公司 | Leveling instrument measurement error reducing method |
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