CN212569146U - Accurate range unit based on array mirror is markd - Google Patents
Accurate range unit based on array mirror is markd Download PDFInfo
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- CN212569146U CN212569146U CN202020433867.7U CN202020433867U CN212569146U CN 212569146 U CN212569146 U CN 212569146U CN 202020433867 U CN202020433867 U CN 202020433867U CN 212569146 U CN212569146 U CN 212569146U
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Abstract
The utility model discloses an accurate range unit based on array mirror is markd aims at solving the array mirror rotation center that exists among the prior art and to the unable precision measurement's of distance of fluorescent screen technical problem. The accurate distance measuring device of the utility model comprises a laser pen; the front end of the laser pen is sequentially provided with an array mirror adjusting table, a fluorescent screen, an imaging lens and a CCD camera along the light path of the laser pen, and the rear end of the laser pen is provided with a theodolite; the working end of the rotary adjusting table is provided with a distance measuring lens group, so that the distance measuring lens group can rotate; the rotation axis of the distance measuring lens group is superposed with the central line of the mirror surface of the reflector on the distance measuring lens group; the fluorescent screen is provided with a reference reticle; the imaging lens is connected to the CCD camera; the theodolite is used for realizing the auto-collimation of the collimating mirror. Based on foretell accurate range unit, the utility model also provides an accurate range finding method based on array mirror is markd.
Description
Technical Field
The utility model relates to an array mirror rotation center is to the distance measurement of fluorescent screen, concretely relates to accurate range unit based on array mirror is markd.
Background
The array mirror is a reflector with a specific angle and an energy point, when wide-spectrum light is reflected, when the incident angle of the wide-spectrum light is a certain specific angle of the array mirror, the reflectivity of the array mirror is the maximum, and emergent light can become a quasi-single energy spectrum at the moment, so that the specific angle of reflection of the array mirror is usually calibrated accurately. At present, the incident angle of the array mirror is calibrated, a geometric calibration method is usually adopted, the maximum reflectivity is measured when the incident light and the array mirror form a certain angle, the change distance of the emitted light on a fluorescent screen is measured by means of the fluorescent screen, then the distance from the reflection center of the array mirror to the fluorescent screen is measured, and the incident angle is calculated by utilizing the tangent value of the two distances. The variable distance of light spots on the fluorescent screen can be accurately obtained, but the distance from the rotation center of the array mirror to the fluorescent screen cannot be accurately measured, mechanical measurement is usually adopted, namely measurement is carried out by using a ruler or direct measurement is carried out by using a design model, the measurement accuracy of the two measurement methods is poor, the calibration accuracy of the array mirror is directly influenced, and therefore a measurement device and a measurement method capable of accurately measuring the distance from the rotation center of the array mirror to the fluorescent screen are urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving the array mirror rotation center that exists among the prior art and to the unable precision measurement's of distance of fluorescent screen technical problem, and provide an accurate range unit based on array mirror is markd.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
an accurate distance measuring device based on array mirror calibration is characterized in that: comprises a laser pen; the front end of the laser pen is sequentially provided with an array mirror adjusting table, a fluorescent screen, an imaging lens and a CCD camera along the light path of the laser pen, and the rear end of the laser pen is provided with a theodolite;
the array mirror adjusting platform comprises a lifting adjusting platform, a translation adjusting platform connected to the working end of the lifting adjusting platform and a rotation adjusting platform connected to the working end of the translation adjusting platform;
the working end of the rotary adjusting table is provided with a distance measuring lens group, so that the distance measuring lens group can rotate;
the distance measuring mirror group comprises a reflecting mirror and a collimating mirror which are arranged vertically;
the rotation axis of the distance measuring mirror group is superposed with the mirror surface center line of the reflector;
the intersection line of the surface of the reflector and the surface of the collimating mirror is superposed with the rotation axis;
a reference reticle is arranged on the fluorescent screen;
the imaging lens is connected to the CCD camera;
the theodolite is used for realizing auto-collimation of the collimating mirror.
Further, the rotary adjusting table comprises a linear motor, a vertical mounting seat, a horizontal mounting frame and a rotary table;
the linear motor is arranged at the lower end of the vertical mounting seat, and the output end of the linear motor faces upwards;
one end of the horizontal mounting frame is connected with the upper end of the vertical mounting seat, and the middle part of the horizontal mounting frame is connected with the working end of the translation adjusting table;
the rotating platform is positioned in the frame body of the horizontal installation frame, two sides of the rotating platform are rotatably connected with the frames on two sides of the horizontal installation frame, and one end of the rotating platform is positioned at the top of the output end of the linear motor;
a tension spring in a tension state is arranged between the rotating platform and the mounting seat;
the distance measuring mirror group is arranged on the rotating platform.
Furthermore, two sides of the horizontal mounting frame are respectively provided with a fixed seat;
rotating shaft seats are arranged at corresponding positions on two sides of the rotating table;
and a rotating shaft is arranged between the fixed seat and the rotating shaft seat in a penetrating way.
Furthermore, the three-dimensional adjusting device also comprises a theodolite three-dimensional adjusting platform and a laser pen three-dimensional adjusting platform;
the theodolite is arranged on a theodolite three-dimensional adjusting table;
the laser pen is arranged on the laser pen three-dimensional adjusting platform through the L-shaped mounting bracket.
Furthermore, the array mirror adjusting table also comprises an L-shaped connecting piece and a Z-shaped connecting piece;
one end of the L-shaped connecting piece is connected with the working end of the lifting adjusting platform, the other end of the L-shaped connecting piece is connected with one end of the Z-shaped connecting piece, and the other end of the Z-shaped connecting piece is connected with the bottom of the translation adjusting platform.
Further, the array mirror adjusting table further comprises a connecting bracket;
the bottom of the connecting support is connected with the working end of the translation adjusting table, and the top of the connecting support is fixedly connected with the horizontal installation frame.
Furthermore, the distance measuring mirror group also comprises a mirror group bracket;
the lens group bracket comprises a reflector mounting seat and a collimating lens mounting seat which are vertically connected with each other;
the rotary table is provided with a groove, and a positioning block and a fixing block are arranged in the groove; one end of the reflector mounting seat is abutted against the positioning block; the other end is tightly propped by a screw penetrating through the fixed block;
the reflector is arranged on the reflector mounting seat, and the central line of the mirror surface of the reflector is superposed with the axis of the rotating shaft.
The utility model has the advantages that:
the utility model discloses utilize the reflection of light, through the angle that changes the incident light, obtain the change distance of emergent light facula position on the fluorescent screen, utilize the method of geometry to calculate array mirror rotation center to the distance of fluorescent screen, improved measurement accuracy greatly, carry out the multiple spot simultaneously and measure and ask its average value, further improve measurement accuracy, compare traditional mechanical measurement, the error that has significantly reduced.
Drawings
Fig. 1 is a schematic structural diagram of an accurate distance measuring device based on array mirror calibration according to the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic structural diagram of an array mirror adjusting table;
FIG. 4 is a schematic view of a distance measuring lens set;
FIG. 5 is a front view of a phosphor screen;
FIG. 6 is a schematic diagram of a measurement state of the precise distance measuring device based on the calibration of the array mirror;
FIG. 7 is a schematic view showing the principle of calculation of the distance from the center of rotation to the phosphor screen.
In the figure, 1-theodolite, 2-laser pen, 3-array mirror adjusting table, 4-distance measuring mirror group, 5-fluorescent screen, 6-imaging lens, 7-CCD camera, 8-laser pen three-dimensional adjusting table, 9-theodolite three-dimensional adjusting table, 10-L type mounting bracket, 11-laser pen press ring, 12-light spot, 13-lifting adjusting table, 14-fixing seat, 15-rotating seat, 16-rotating shaft, 17-rotating seat, 18-tension spring, 19-horizontal mounting frame, 20-vertical mounting seat, 21-linear motor, 22-connecting bracket, 23-translation adjusting table, 24-reflector, 25-collimating mirror mounting seat, 26-collimating mirror press plate, 27-collimating mirror, 28-fixing block, 30-reflector mounting seat, 31-positioning block, 35-L-shaped connecting piece, 36-Z-shaped connecting piece and 37-groove.
Detailed Description
To make the objects, advantages and features of the present invention clearer, the following description of the present invention will be made in conjunction with the accompanying drawings and embodiments for further details of an accurate distance measuring device based on array mirror calibration. The advantages and features of the present invention will become more apparent from the following detailed description. It should be noted that: the drawings are in a very simplified form and are not to precise scale, and are provided solely for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention; second, the structures shown in the drawings are often part of actual structures.
The utility model relates to an accurate range unit based on array mirror calibration, as shown in figure 1 and figure 2, comprising a theodolite 1, a laser pen 2, an array mirror adjusting platform 3, a fluorescent screen 5, an imaging lens 6 and a CCD camera 7 which are arranged in sequence;
the array mirror adjusting platform 3, the fluorescent screen 5, the imaging lens 6 and the CCD camera 7 are all arranged on the light emitted by the laser pen 2; the theodolite 1 is arranged at the rear end of the laser pen 2, namely on a reverse extension line of light emitted by the laser pen 2;
the theodolite 1 is arranged on a theodolite three-dimensional adjusting table 9;
the laser pen 2 is installed on an L-shaped installation support 10 through a laser pen pressing ring 11, and the L-shaped installation support 10 is arranged on a laser pen three-dimensional adjusting platform 8; the incident light emitted by the laser pen 2 is reflected to the fluorescent screen 5 by the distance measuring mirror group 4;
as shown in fig. 3, the array mirror adjusting stage 3 includes a lifting adjusting stage 13, an L-shaped connecting piece 35, a Z-shaped connecting piece 36, a translation adjusting stage 23, a connecting bracket 22, and a rotation adjusting stage composed of a linear motor 21, a vertical mounting base 20, a horizontal mounting frame 19, and a rotation stage 17; as shown in FIG. 3, the array mirror adjusting platform 3 can realize Y, Z and thetay three-dimensional adjustment, wherein the Y direction is realized by the translation adjusting platform 23, the Z direction is realized by the lifting adjusting platform 13, and the thetay is realized by the rotation adjusting platform.
The working end of the lifting adjusting platform 13 is connected with one end of an L-shaped connecting piece 35, the other end of the L-shaped connecting piece 35 is connected with one end of a Z-shaped connecting piece 36, the other end of the Z-shaped connecting piece 36 is connected with the bottom of the translation adjusting platform 23, the working end of the translation adjusting platform 23 is connected with the bottom of the connecting support 22, and the top of the connecting support 22 is fixedly connected with the horizontal mounting frame 19; the middle parts of two sides of the horizontal installation frame 19 are respectively provided with a fixed seat 14; the rotating platform 17 is positioned in the frame body of the horizontal installation frame 19, and the corresponding positions at two sides of the rotating platform are provided with rotating shaft seats 15; a rotating shaft 16 penetrates between the fixed seat 14 and the rotating shaft seat 15, so that two sides of the rotating platform 17 are rotatably connected with frames on two sides of the horizontal mounting frame 19, namely the rotating platform 17 can rotate around the rotating shaft 16; the rotating shaft 16 is vertical to the light of the laser pen 2; one end of the horizontal mounting frame 19, which is far away from the Z-shaped connecting piece 36, is fixedly mounted at the upper end of the vertical mounting base 20, the linear motor 21 is mounted at the bottom of the vertical mounting base 20, and the output end of the linear motor 21 is upward and just props against the bottom of one end, which is far away from the Z-shaped connecting piece 36, of the rotating platform 17; a tension spring 18 which is always in a tension state is arranged between the rotating platform 17 and the mounting seat 20; when the output end of the linear motor 21 is ejected upwards, the rotating platform 17 rotates to one side around the rotating shaft 16, and when the output end of the linear motor 21 is retracted, the rotating platform 17 rotates reversely around the rotating shaft 16 under the action of the tension spring 18 which is always in a stretching state, so that the rotatable adjustment is realized;
as shown in fig. 4, the distance measuring mirror group 4 includes a reflector 24 and a collimator lens 27, and further includes a mirror group support composed of a reflector mounting base 30 and a collimator lens mounting base 25 which are vertically connected to each other; the rotary table 17 is provided with a groove 37, a positioning block 31 and a fixing block 28 are arranged in the groove 37, the fixing block 28 is provided with a set screw, and the set screw abuts against the side surface of the reflector mounting seat 30 to realize the positioning of the reflector mounting seat 30; the reflector 24 is mounted on the reflector mounting base 30 to ensure that the central line of the mirror surface of the reflector 24 coincides with the rotation center (i.e. the axis of the rotating shaft 16), and the collimator 27 is mounted on the collimator mounting base 25 through the collimator pressing plate 26.
The fluorescent screen 5 is provided with a reference reticle; a reference is provided for measuring the position of the spot incident on the screen 5.
The imaging lens 6 is connected to the CCD camera 7, and the imaging lens 6 and the CCD camera 7 accurately measure the moving distance of the light spot 12;
the theodolite 1 obtains the rotation angle of the incident angle of the laser reflection by auto-collimating the distance measuring mirror group 4, thereby calculating the distance from the rotation center of the reflector 24 to the fluorescent screen 5.
The utility model relates to an accurate range finding method based on array mirror is markd, as shown in FIG. 6, concrete step is as follows:
step 1, preparing the accurate distance measuring device based on array mirror calibration;
7, repeating the step 5 and the step 6, and correspondingly obtaining a third position and a third reading; -obtaining again a distance of the centre of rotation to the screen (5) from the third position, the third reading, the first position and the first reading;
step 8, averaging the distance obtained in the step 6 and the distance obtained in the step 7;
step 9, adjusting the translation adjusting table 23 to translate a distance along the axial direction of the rotation center (i.e. the Y axis shown in fig. 3), repeating the steps 2 to 6, and obtaining the distance from the rotation center of the rotation adjusting table to the fluorescent screen (5);
and 10, repeating the step 9 at least once, and taking the average value of the distances from the rotation centers of all the distance measuring mirror groups 4 to the fluorescent screen 5. The average is the final distance, where the larger the number of repetitions, the smaller the error.
Claims (7)
1. The utility model provides an accurate range unit based on array mirror is markd which characterized in that: comprises a laser pen (2); the front end of the laser pen (2) is sequentially provided with an array mirror adjusting table (3), a fluorescent screen (5), an imaging lens (6) and a CCD camera (7) along the light path, and the rear end of the laser pen (2) is provided with a theodolite (1);
the array mirror adjusting platform (3) comprises a lifting adjusting platform (13), a translation adjusting platform (23) connected to the working end of the lifting adjusting platform (13), and a rotation adjusting platform connected to the working end of the translation adjusting platform (23);
a distance measuring lens group (4) is arranged at the working end of the rotary adjusting table, so that the distance measuring lens group (4) can rotate;
the distance measuring mirror group (4) comprises a reflecting mirror (24) and a collimating mirror (27) which are arranged vertically;
the rotation axis of the distance measuring mirror group (4) is superposed with the mirror surface center line of the reflector (24);
the intersection line of the plane of the reflector (24) and the plane of the collimator (27) coincides with the rotation axis;
a reference reticle is arranged on the fluorescent screen (5);
the imaging lens (6) is connected to the CCD camera (7);
the theodolite (1) is used for realizing auto-collimation of the collimating mirror (27).
2. The precise distance measuring device based on array mirror calibration as claimed in claim 1, wherein: the rotary adjusting table comprises a linear motor (21), a vertical mounting seat (20), a horizontal mounting frame (19) and a rotary table (17);
the linear motor (21) is arranged at the lower end of the vertical mounting seat (20), and the output end of the linear motor is upward;
one end of the horizontal mounting frame (19) is connected with the upper end of the vertical mounting seat (20), and the middle part of the horizontal mounting frame is connected with the working end of the translation adjusting table (23);
the rotating platform (17) is positioned in a frame body of the horizontal mounting frame (19), two sides of the rotating platform are rotatably connected with frames on two sides of the horizontal mounting frame (19), and one end of the rotating platform (17) is positioned at the top of the output end of the linear motor (21);
a tension spring (18) in a tension state is arranged between the rotating table (17) and the mounting seat (20);
the distance measuring mirror group (4) is arranged on the rotating platform (17).
3. The precise distance measuring device based on array mirror calibration as claimed in claim 2, wherein: two sides of the horizontal mounting frame (19) are respectively provided with a fixed seat (14);
rotating shaft seats (15) are arranged at corresponding positions on two sides of the rotating table (17);
a rotating shaft (16) is arranged between the fixed seat (14) and the rotating shaft seat (15) in a penetrating way.
4. The precise distance measuring device based on array mirror calibration according to any one of claims 1 to 3, wherein: the three-dimensional theodolite adjusting device also comprises a theodolite three-dimensional adjusting platform (9) and a laser pen three-dimensional adjusting platform (8);
the theodolite (1) is arranged on a theodolite three-dimensional adjusting table (9);
the laser pen (2) is arranged on the laser pen three-dimensional adjusting platform (8) through an L-shaped mounting bracket (10).
5. The precise distance measuring device based on array mirror calibration as claimed in claim 2 or 3, wherein: the array mirror adjusting table (3) further comprises an L-shaped connecting piece (35) and a Z-shaped connecting piece (36);
one end of the L-shaped connecting piece (35) is connected with the working end of the lifting adjusting platform (13), the other end of the L-shaped connecting piece is connected with one end of the Z-shaped connecting piece (36), and the other end of the Z-shaped connecting piece (36) is connected with the bottom of the translation adjusting platform (23).
6. The precise distance measuring device based on array mirror calibration as claimed in claim 5, wherein: the array mirror adjusting table (3) further comprises a connecting bracket (22);
the bottom of the connecting support (22) is connected with the working end of the translation adjusting table (23), and the top of the connecting support is fixedly connected with the horizontal mounting frame (19).
7. The precise distance measuring device based on array mirror calibration as claimed in claim 3, wherein: the distance measuring lens group (4) further comprises a lens group bracket;
the mirror group bracket comprises a reflector mounting seat (30) and a collimating mirror mounting seat (25) which are vertically connected with each other;
a groove (37) is formed in the rotating table (17), and a positioning block (31) and a fixing block (28) are arranged in the groove (37); one end of the reflector mounting seat (30) is abutted against the positioning block (31); the other end is tightly propped by a screw penetrating through the fixed block (28);
the reflector (24) is arranged on the reflector mounting seat (30), and the central line of the mirror surface of the reflector is superposed with the axis of the rotating shaft (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020433867.7U CN212569146U (en) | 2020-03-30 | 2020-03-30 | Accurate range unit based on array mirror is markd |
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| CN202020433867.7U CN212569146U (en) | 2020-03-30 | 2020-03-30 | Accurate range unit based on array mirror is markd |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111427053A (en) * | 2020-03-30 | 2020-07-17 | 中国科学院西安光学精密机械研究所 | Precise distance measuring device and method based on array mirror calibration |
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2020
- 2020-03-30 CN CN202020433867.7U patent/CN212569146U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111427053A (en) * | 2020-03-30 | 2020-07-17 | 中国科学院西安光学精密机械研究所 | Precise distance measuring device and method based on array mirror calibration |
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