Portable calibration target plate device for intense laser equipment
Through the convenient calibration target plate device, the characteristic marks and color plates of the color target and target target are used to solve the problems of optical axis deviation and frequent target library updates of compact high-power laser equipment, realize simple optical axis calibration and target simulation, and improve image acquisition efficiency.
Patent Information
- Application Number
- CN202422747751.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Compact high-power laser equipment lacks internal optical path and optical axis detection methods. There is a positional deviation between the system optical axis and the photoelectric detection field of view. The existing calibration device has a complex structure and is not easy to carry. The target library is frequently updated, and image acquisition is difficult.
A convenient calibration target plate device was designed, which included a first colorimetric target, a second colorimetric target and a target target. By coordinating characteristic marks of different shapes with colorimetric plates, optical axis testing and target simulation were achieved. Anti-reflective and highly reflective materials were used to provide dark background and light spot feature detection. Combined with a universal shaft and target adapter structure, it was easy to carry and quickly update.
It realizes the simple optical axis calibration and target simulation of high-power laser equipment. It has a simple structure and is easy to carry. It is suitable for multi-environment testing and improves the image acquisition efficiency and target library update speed.
Smart Images
Figure CN223389407U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of target plate calibration equipment, in particular to a convenient target plate calibration device for high-power laser equipment. Background Art
[0002] High-power laser equipment usually includes optoelectronic modules such as laser output, target photoelectric detection, and laser ranging. Among them, a type of compact high-power laser equipment does not have the means to detect the optical axis of the internal optical path, and the system's high-power laser output optical axis has a certain position deviation within the photoelectric detection field of view. Therefore, the optical axis calibration of this type of equipment requires the use of external field test conditions. The means for calibrating the target and optical axis are very demanding and relatively complex. The existing calibration device has a complex structure and is not easy to carry.
[0003] Since the targets of high-power laser equipment are updated and iterated rapidly and the target library is updated extremely frequently, training new targets requires manipulating the targets to perform a series of image acquisitions, and image acquisition of some targets is very difficult. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a convenient target plate calibration device for high-power laser equipment.
[0005] The purpose of the utility model is achieved through the following technical solutions: a portable calibration target plate device for high-power laser equipment, comprising:
[0006] A first color developing target, the first color developing target comprising a first bracket, a first target plate base being provided on the first bracket, a first color developing plate and a plurality of first characteristic marks being provided on one side surface of the first target plate base;
[0007] A second color developing target, the second color developing target comprising a second bracket, a second target plate base being provided on the second bracket, and a second color developing plate and a plurality of second characteristic marks being provided on one side surface of the second target plate base;
[0008] The first characteristic mark and the second characteristic mark have different shapes.
[0009] Furthermore, the first target plate base is square, each corner of the first target plate base is provided with a first characteristic mark, and the first color plate is located at the center of the first target plate base;
[0010] The second target plate base is square, each corner of the second target plate base is provided with a second characteristic mark, and the second color developing plate is located at the center of the second target plate base.
[0011] Furthermore, the side of the first target plate substrate provided with the first color plate and the first characteristic mark is coated with an anti-reflection material, and the side of the first color plate facing away from the first target plate substrate is coated with a high-reflection material.
[0012] Furthermore, the side of the second target plate substrate provided with the second color plate and the second characteristic mark is coated with an anti-reflection material, and the side of the second color plate facing away from the second target plate substrate is coated with a high-reflection material.
[0013] Furthermore, the calibration target plate device further comprises:
[0014] The target comprises a third bracket, a third target plate base is provided on the third bracket, and a target mounting seat and a plurality of third characteristic marks are provided on one side surface of the third target plate base.
[0015] Furthermore, the third target plate base is square, each corner of the third target plate base is provided with a third characteristic mark, and the target mounting seat is located at the center of the third target plate base.
[0016] Furthermore, the target mounting seat includes a universal shaft and a target adapter structure, one end of the universal shaft is connected to the third target plate base, and the other end of the universal shaft is connected to the target adapter structure.
[0017] Furthermore, the first bracket, the second bracket and the third bracket have the same structure.
[0018] Furthermore, the first bracket includes two side frames, each of which includes a horizontally arranged transverse plate and a vertically arranged vertical plate, the vertical plate is arranged on the transverse plate, and the first target plate base is arranged on the vertical plate.
[0019] Furthermore, the first bracket further includes a reinforcement plate arranged obliquely, one end of the reinforcement plate is connected to the horizontal plate, and the other end of the reinforcement plate is connected to the vertical plate.
[0020] The beneficial effects of the utility model are:
[0021] (1) The calibration target plate device in the utility model has a simple structure and is easy to carry, and can be used to test high-power laser equipment in a variety of environments;
[0022] (2) In the present invention, the optical axis test and calibration of the detection module in the high-intensity laser equipment can be achieved through the cooperation of the first color target and the second color target;
[0023] (3) The target in the present invention can complete the simulation of a specific target, which is conducive to the rapid update of the target library of high-power laser equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1This is a schematic diagram of using a calibration target device to test high-power laser equipment;
[0025] Figure 2 Schematic diagram of the structure of the first color target;
[0026] Figure 3 Schematic diagram of the structure of the second color target;
[0027] Figure 4 Schematic diagram of the target structure;
[0028] In the figure, 1-first target plate base, 2-first color display plate, 3-first characteristic mark, 4-second target plate base, 5-second color display plate, 6-second characteristic mark, 7-third bracket, 8-third target plate base, 9-universal shaft, 10-target adapter structure, 11-third characteristic mark, 12-target model. DETAILED DESCRIPTION
[0029] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.
[0030] See Figures 1 to 4 The utility model provides a convenient calibration target plate device for high-power laser equipment.
[0031] like Figure 1 As shown, a portable calibration target plate device for high-power laser equipment includes a first color target and a second color target.
[0032] The first colorimetric target includes a first bracket, on which a first target plate base 1 is provided, on which a first colorimetric plate 2 and a plurality of first characteristic marks 3 are provided; the second colorimetric target includes a second bracket, on which a second target plate base 4 is provided, on which a second colorimetric plate 5 and a plurality of second characteristic marks 6 are provided; wherein the first characteristic mark 3 and the second characteristic mark 6 have different shapes, the first colorimetric plate 2 and the first characteristic mark 3 are arranged on the same side of the first target plate base 1, and the second colorimetric plate 5 and the second characteristic mark 6 are arranged on the same side of the second target plate base 4.
[0033] For example, Figure 2 The first characteristic mark 3 in the first color target shown is a bent structure. Figure 3 The second characteristic mark 6 in the second color development target shown is a cross structure.
[0034] The first color target and the second color target are used to complete the optical axis test and calibration of the detection module in the high-power laser equipment.
[0035] The strong laser equipment includes a first detection module and a second detection module. The first detection module and the second detection module are photoelectric detection modules with two different fields of view. The first detection module is a photoelectric capture and coarse tracking module with a large field of view, and the second detection module is a photoelectric fine tracking module with a small field of view. The strong laser equipment is a typical type of equipment with different transmitting and receiving axes. Therefore, the position of the transmitting laser optical axis needs to be marked in different detectors to meet the requirements of the high-power laser equipment for precise tracking and aiming. Figure 1 As shown in the figure, the automated calibration of high-power laser equipment requires two colorimetric targets at different distances. Assuming that the distances between the first and second colorimetric targets and the high-power laser equipment to be tested are D1 and D2 respectively, the position of the main laser at any distance Di on the detection surface is:
[0036]
[0037] Where Δx and Δy are the horizontal and azimuth spatial distances between the main laser of the equipment panel and the detection module, τ2 and τ1 are the characteristic values related to the two color targets, X1 and Y1 are the optical axis coordinates obtained by the calibration optical axis at the first color target, X Di and Y Di Calibrate the coordinates of the optical axis on the detection image plane at any distance.
[0038] Based on the above formula, by marking the position of the primary laser on the image plane of the detection module being measured at close distances D1 and D2 indoors, the primary laser position at any location can be deduced. In field testing, simply finding the relative position of the target between the first and second detection modules will reveal the corresponding positions of the primary laser on the two detectors at different distances.
[0039] The first color target and the second color target have different characteristic marks. After marking, the image will automatically identify the target plates at different positions. After identification, the indicator light will be emitted and marked. After marking, the main laser weak light emission calibration will be performed, and finally the calibration data will be saved to the database.
[0040] In one embodiment, the first target plate substrate 1 is a square, each corner of the first target plate substrate 1 is provided with a first characteristic mark 3, and the first color plate 2 is located at the center of the first target plate substrate 1. For example, Figure 2 In the first color target shown, the first target plate base 1 and the first color plate 2 are both square structures. Four first characteristic marks 3 are provided on the first target plate base 1. The four first characteristic marks 3 are distributed at the four corners of the first target plate base 1. The first color plate 2 is located at the center of the first target plate base 1, that is, the center of the first color plate 2 coincides with the center of the first target plate base 1.
[0041] In other embodiments, the first target plate substrate 1 may be in other shapes, such as rectangular, circular, etc.
[0042] In one embodiment, the second target plate base 4 is a square, each corner of the second target plate base 4 is provided with a second characteristic mark 6, and the second color plate 5 is located in the center of the second target plate base 4. For example, Figure 3 In the second color target shown, the second target plate base 4 and the second color plate 5 are both square structures. Four second characteristic marks 6 are provided on the second target plate base 4. The four second characteristic marks 6 are distributed at the four corners of the second target plate base 4. The second color plate 5 is located at the center of the second target plate base 4, that is, the center of the second color plate 5 coincides with the center of the second target plate base 4.
[0043] In other embodiments, the second target plate substrate 4 may be in other shapes, such as rectangular, circular, etc.
[0044] In one embodiment, the sides of the first target substrate 1 on which the first color plate 2 and the first characteristic mark 3 are provided are coated with an anti-reflective material, and the side of the first color plate 2 facing away from the first target substrate 1 is coated with a highly reflective material. The anti-reflective material coating of the first target substrate 1 provides a dark background for the reference light during calibration, enabling coarse alignment. The highly reflective material coating of the first color plate 2 serves as a target for ignition of a high-intensity laser, enabling detection of the laser spot characteristics and precise calibration of the optical axis. The first characteristic mark 3 provides a feature extraction reference for the test software, enabling automated calibration.
[0045] For example, the highly reflective material may be oil-based latex paint, and the anti-reflective material may be black matte paint.
[0046] In one embodiment, the side of the second target substrate 4 on which the second color plate 5 and the second characteristic mark 6 are provided is coated with an anti-reflective material, and the side of the second color plate 5 facing away from the second target substrate 4 is coated with a highly reflective material. The anti-reflective coating of the second target substrate 4 provides a dark background for the reference light during calibration, enabling coarse alignment. The highly reflective coating of the second color plate 5 serves as a target for ignition of the high-intensity laser, enabling detection of the laser spot characteristics and precise calibration of the optical axis. The second characteristic mark 6 provides a feature extraction reference for the test software, enabling automated calibration.
[0047] In one embodiment, the calibration target plate device further includes a target, such as Figure 4 As shown, the target includes a third bracket 7, on which a third target plate base 8 is provided. The third target plate base 8 is provided with a target mounting seat and a plurality of third characteristic marks 11, and the target mounting seat and the third characteristic marks 11 are arranged on the same side of the third target plate base 8.
[0048] The target is used to simulate a specific target. When simulating a target, the target model 12 is mounted on a target mounting base. The target can be used to complete target image acquisition training of a strong laser equipment and servo debugging of the strong laser equipment indoors.
[0049] The third characteristic mark 11 can provide a feature extraction reference for the test software to achieve the purpose of automatic calibration.
[0050] The third target plate base 8 in the target is the target background base to be measured, such as clear space, jungle, grassland, etc. The target model 12 to be collected is fixed to the target mounting base, and the distance between the target model 12 and the high-power laser equipment is adjusted so that the target model 12 and the target background base match the detection field of view of the high-power laser equipment, and the target features and images are recorded and saved. The target model 12 is fine-tuned in posture through the target mounting base, and the target features and images in different postures are recorded and saved. At the same time, the target target can also be used to collect targets at night, including image collection of dark targets and target collection under active lighting conditions. By installing the target model 12 on the target target to simulate a specific target, the problem of difficulty in collecting target images in the air is solved, meeting the initial rapid training requirements of the high-power laser equipment on new targets and improving the image collection efficiency of the high-power laser equipment.
[0051] In one embodiment, the third target plate base 8 is square, each corner of the third target plate base 8 is provided with a third characteristic mark 11, and the target mounting seat is located at the center of the third target plate base 8. For example, Figure 4 In the target target shown, the third target plate base 8 is a square structure, the side where the target mounting seat is connected to the third target plate base 8 is a circular structure, four third characteristic marks 11 are provided on the third target plate base 8, and the four third characteristic marks 11 are distributed at the four corners of the third target plate base 8. The target mounting seat is located at the center of the third target plate base 8, that is, the center of the side where the target mounting seat is connected to the third target plate base 8 coincides with the center of the third target plate base 8.
[0052] In other embodiments, the third target plate substrate 8 may be in other shapes, such as rectangular, circular, etc.
[0053] In one embodiment, the target mounting base includes a universal shaft 9 and a target adapter structure 10. One end of the universal shaft 9 is connected to the third target plate base 8, and the other end of the universal shaft 9 is connected to the target adapter structure 10. When using a target to calibrate a high-power laser equipment, the target to be measured is mounted on the target adapter structure 10. After the target to be measured is mounted on the target adapter structure 10, the universal shaft 9 allows for convenient adjustment of the angle of the target to be measured relative to the third target plate base 8.
[0054] In one embodiment, the first bracket, the second bracket and the third bracket 7 have the same structure. The first bracket, the second bracket and the third bracket 7 use the same structure, which improves the versatility of parts, helps to reduce costs, and facilitates the maintenance of the calibration target plate device.
[0055] In other embodiments, the first bracket, the second bracket and the third bracket 7 may adopt different structures.
[0056] In one embodiment, the first bracket includes two side frames, each of which includes a horizontally arranged transverse plate and a vertically arranged vertical plate. The vertical plate is arranged on the transverse plate, and the first target plate substrate 1 is arranged on the vertical plate.
[0057] In one embodiment, the first bracket further includes a tilted reinforcement plate, one end of the reinforcement plate is connected to the horizontal plate, and the other end of the reinforcement plate is connected to the vertical plate. Figure 4 The first bracket is similar to the third bracket 7 shown in FIG. Due to the provision of the reinforcement plate, the reinforcement plate, the horizontal plate, and the vertical plate form a triangular structure, thereby improving the stability of the first bracket. The number of reinforcement plates can be one or more. When there are two reinforcement plates, the two reinforcement plates are symmetrically arranged with the vertical plate as the symmetry line.
[0058] In one embodiment, the first bracket may include only one or more than two side brackets.
[0059] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.
Claims
1. A portable target calibration device for high-power laser equipment, characterized in that: include: A first color developing target, the first color developing target comprising a first bracket, a first target plate base being provided on the first bracket, a first color developing plate and a plurality of first characteristic marks being provided on one side surface of the first target plate base; A second color developing target, the second color developing target comprising a second bracket, a second target plate base being provided on the second bracket, and a second color developing plate and a plurality of second characteristic marks being provided on one side surface of the second target plate base; The first characteristic mark and the second characteristic mark have different shapes.
2. A portable calibration target plate device for high-power laser equipment according to claim 1, characterized in that: The first target plate base is square, each corner of the first target plate base is provided with a first characteristic mark, and the first color plate is located at the center of the first target plate base; The second target plate base is square, each corner of the second target plate base is provided with a second characteristic mark, and the second color developing plate is located at the center of the second target plate base.
3. A portable calibration target plate device for high-power laser equipment according to claim 1, characterized in that: The side of the first target plate substrate provided with the first color plate and the first characteristic mark is coated with an anti-reflection material, and the side of the first color plate facing away from the first target plate substrate is coated with a high-reflection material.
4. A portable calibration target plate device for high-power laser equipment according to claim 1, characterized in that: The side of the second target plate substrate provided with the second color plate and the second characteristic mark is coated with an anti-reflection material, and the side of the second color plate facing away from the second target plate substrate is coated with a high-reflection material.
5. A portable calibration target plate device for high-power laser equipment according to claim 1, characterized in that: The calibration target plate device also includes: The target comprises a third bracket, a third target plate base is provided on the third bracket, and a target mounting seat and a plurality of third characteristic marks are provided on one side surface of the third target plate base.
6. A portable calibration target plate device for high-power laser equipment according to claim 5, characterized in that: The third target plate base is square, each corner of the third target plate base is provided with a third characteristic mark, and the target mounting seat is located at the center of the third target plate base.
7. A portable calibration target plate device for high-power laser equipment according to claim 5, characterized in that: The target mounting seat includes a universal shaft and a target adapter structure, one end of the universal shaft is connected to the third target plate base, and the other end of the universal shaft is connected to the target adapter structure.
8. The portable calibration target plate device for high-power laser equipment according to claim 5, characterized in that: The first bracket, the second bracket and the third bracket have the same structure.
9. A portable calibration target plate device for high-power laser equipment according to claim 8, characterized in that: The first bracket includes two side frames, each of which includes a horizontally arranged transverse plate and a vertically arranged vertical plate. The vertical plate is arranged on the transverse plate, and the first target plate base is arranged on the vertical plate.
10. A portable calibration target plate device for high-power laser equipment according to claim 9, characterized in that: The first bracket further includes a reinforcement plate arranged obliquely, one end of the reinforcement plate is connected to the horizontal plate, and the other end of the reinforcement plate is connected to the vertical plate.