Apparatus and method for rapid serial production of speckle fields based on laser scanning

Abstract

The application discloses a device and method for rapidly and continuously manufacturing speckle fields based on laser scanning, wherein the device comprises a control system, an executing mechanism, a scanning mechanism and a rotating mechanism; the rotating mechanism is connected with the control system through a signal transmission cable, and the control system controls start and stop of the rotating mechanism; the scanning mechanism is connected with the control system through a signal transmission cable, and the control system controls start and stop of the scanning mechanism; the executing mechanism is connected with the control system through a signal transmission cable, and the control system controls start and stop of the executing mechanism. The device and method for rapidly and continuously manufacturing speckle fields based on laser scanning are particularly suitable for automatically and continuously manufacturing speckle fields, and improve the precision and speed of speckle arrangement.

Description

Technical Field

[0001] This invention relates to the technical field of testing the dynamic mechanical properties of brittle materials such as coal and rock, and in particular to a device and method for rapidly and continuously generating speckle fields based on laser scanning. Background Technology

[0002] In underground operations such as mining and tunneling, the mechanical properties of the surrounding rock determine the methods used for construction and development. Investigating the process of deformation and fracture in coal and rock under stress is crucial for studying rock mechanical properties. Previously, through various methods including physical and numerical simulations, 3D simulations, and image processing, mechanical tests on rocks have verified that using a speckle field pattern on the rock surface and reflecting the energy release and fracture characteristics based on changes in the speckle field images before and after rock fracture provides a clearer representation of rock mechanical properties compared to other experimental schemes.

[0003] Currently, the arrangement of speckle patterns on the surface of coal and rock samples is mostly done manually by spraying paint or dotting. Manually arranged speckle patterns have drawbacks such as uneven distribution and inconsistent sizes of speckles. Furthermore, manual arrangement is time-consuming and inefficient, failing to meet the experimental requirements for large-scale rock property testing. Specific drawbacks are as follows:

[0004] 1. The randomness of the artificially arranged speckle field is too great, the uniformity of the white paint cannot be guaranteed, the spacing between speckles cannot be guaranteed, and the size of the speckles cannot be guaranteed, which has a great impact on subsequent coal and rock mechanics experiments and the experiment rework rate is high.

[0005] Second, manual spot setting is time-consuming, not only in terms of the long time required to manually arrange the spots, but also in the long time required for the paint to solidify. It is time-consuming and labor-intensive, and cannot meet the needs of experiments that require testing large batches of coal and rock specimens.

[0006] Third, manual spray painting requires close-range manual application of paint to coal and rock specimens, and the odor and mist from the evaporating paint can be harmful to the human body. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0008] Therefore, this invention proposes a device and method for rapidly and continuously creating speckle fields based on laser scanning, which is particularly suitable for automatically and continuously creating speckle fields, improving the accuracy and speed of speckle arrangement.

[0009] A method for rapidly and continuously generating speckle fields based on laser scanning according to an embodiment of the present invention includes the following steps:

[0010] The first step is to start the rapid and continuous speckle field production device based on laser scanning by the computer, and set the dot spacing and spacing of the actuator on the computer. The minimum dot spacing and spacing set will not cause the dots made by the telescopic dotting pen to connect and interlock.

[0011] The second step is to place the batch of coal and rock specimens in sequence directly above the small holes on the rotating belt between the baffle and the scanning mechanism. The coal and rock specimens rotate smoothly with the rotating belt.

[0012] The third step involves the coal and rock specimens passing through a scanning mechanism. The laser emitted by the laser emitting rod scans the dimensions of each coal and rock specimen, and the scanning results are transmitted back to the computer by the laser controller and automatically stored in the set spacing group.

[0013] The fourth step is that after the computer receives the dimensions of the coal and rock specimens scanned by the scanning mechanism, it simultaneously issues instructions to the execution mechanism. The execution mechanism automatically adjusts the positions of the fixing module, the painting module, and the dotting module in sequence according to the dimensions of each coal and rock specimen.

[0014] Step 5: When the first coal and rock specimen reaches directly above the telescopic controller, the rotating belt stops rotating, the drying module starts, and the telescopic controller smoothly raises the coal and rock specimen, clamping it together with the telescopic shaft in the actuator. Then, the fixed control valve in the fixed module controls the painting module and the dotting module to rotate along the slide rail. During rotation, the painting module first sprays paint evenly onto the coal and rock specimen, while the drying module dries the paint on the specimen. After rotating 360°, the painting module stops spraying paint, and the dotting module performs telescopic dotting according to the command set in Step 1. After rotating 360°, the dotting pattern arrangement is completed.

[0015] Step 6: After the scattered spot field is arranged, the telescopic controller will drive the coal and rock specimens to fall smoothly onto the rotating belt. The telescopic controller will return to its original position, and the actuator will adjust the position of the internal module according to the size of the next coal and rock specimen. The rotating belt will continue to rotate. Repeat the actions of step 5 until the scattered spot field of all coal and rock specimens is arranged.

[0016] Step 7: After the scattered spot field is completed, the coal and rock specimens continue to rotate with the rotating belt and finally slide smoothly down to the storage location through the baffle.

[0017] The present invention also provides an apparatus for rapidly and continuously producing speckle fields based on laser scanning, comprising a control system, an actuator, a scanning mechanism, and a rotating mechanism; the rotating mechanism is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the rotating mechanism; the scanning mechanism is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the scanning mechanism; the actuator is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the actuator.

[0018] The beneficial effects of this invention are that it avoids errors caused by manual placement, reduces experimental errors, improves the success rate of experiments, and is economical; only one person is needed to place the coal and rock specimens, and a large number of coal and rock specimens can be continuously arranged in a short time, which is continuous and effective; it avoids close contact between the human body and the sprayed paint, which reduces the harm of the paint to the human body to a certain extent and is safe.

[0019] According to an embodiment of the present invention, in the fourth step, the actuator automatically adjusts the positions of the fixing module, the painting module, and the dotting module sequentially according to the size of each coal and rock specimen. Specifically, the fixing control valve in the fixing module controls the telescopic shaft to extend and retract to a position that can cooperate with the telescopic controller to clamp the coal and rock specimen according to the height of the coal and rock specimen. The painting control valve in the painting module controls the nozzle to move to the position between the telescopic shaft and the telescopic controller. The dotting control valve in the dotting module extends and retracts the dotting telescopic shaft according to the diameter of the coal and rock specimen until the telescopic dotting pen can contact the coal and rock specimen, after which the telescopic dotting pen automatically retracts.

[0020] According to one embodiment of the present invention, the control system includes a control base, a fixing plate, a control rod, and a computer; the control base is responsible for connecting to various systems and transmitting data to the computer; the fixing plate is mounted on the control base and connected to the control base via a data transmission line; the control rod is embedded inside the fixing plate and communicates with the internal wiring space of the fixing plate, and is used to connect to a fixed actuator.

[0021] According to one embodiment of the present invention, the rotating mechanism includes a baffle, a support frame, a rotating belt, and a telescopic controller; the support frame is a ring structure and is located on the periphery of the control base; the rotating belt is used to place coal and rock specimens, and is located on the support frame, rotating on the support frame after the rotating mechanism is started; the baffle is used to stop the coal and rock specimens, and is located above the rotating belt, fixed to the support frame and not connected to the rotating belt; the telescopic controller is located inside the support frame and below the rotating belt.

[0022] According to one embodiment of the present invention, the scanning mechanism is connected to the computer via a control base, and the scanning mechanism starts and stops synchronously with the rotating mechanism; the scanning mechanism is mounted directly above the rotating mechanism, and the scanning mechanism does not interfere with the rotation of the rotating belt and the coal and rock specimen.

[0023] According to one embodiment of the present invention, the scanning mechanism includes a laser emitting rod, a laser controller, a cable tray, and a first housing. The first housing has a gantry-type structure and is mounted on the circumferential width of a support frame, without contacting the support frame. The laser controller is installed on both sides of the inner wall of the first housing and is connected to a computer. The laser controller controls laser emission, receives laser scanning information, and feeds it back to the computer. The laser emitting rod is connected to the laser controller, receives control signals from the laser controller, and emits a scanning laser to scan the dimensions of the coal and rock specimen. The laser signal is then fed back to the computer. The cable tray is used to install signal transmission lines, with both ends connected to two laser controllers, and is mounted above the laser emitting rod. According to one embodiment of the present invention, the actuator is connected to a control rod and connected to a computer via a fixing plate and a control base. The actuator is located directly above the rotating belt.

[0024] According to one embodiment of the present invention, the actuator includes a fixing module, a painting module, a dotting module, a drying module, and a second housing; the fixing module is installed at the middle position of the top of the inner wall of the second housing, and the fixing module is used to fix the coal and rock specimen; a slide rail is installed in the circumferential direction of the inner wall of the second housing, and the painting module and the dotting module are respectively installed on the slide rail, and the painting module and the dotting module rotate 360° along the slide rail; the drying module is installed on both sides of the top of the inner wall of the second housing, and the drying module is used to dry the paint on the surface of the coal and rock specimen, and the drying module is started simultaneously with the rotating mechanism; the second housing is connected to a control rod.

[0025] According to one embodiment of the present invention, the fixing module includes a fixing control valve and a telescopic shaft; the fixing control valve is located at the top of the fixing module and connected to the inner wall of the second housing, and is used to receive signals from the computer and control the extension and retraction of the telescopic shaft; the fixing control valve has a built-in Bluetooth module that can send and receive signals to the painting module and the dotting module to issue commands; the painting module includes a painting control valve, a sliding rod, a nozzle, and a paint container; the paint container is connected to a slide rail; the painting control valve has an embedded Bluetooth module that is connected to the paint container, and receives signals from the fixing control valve to control the extension and retraction of the paint container. The spraying module controls the opening and closing of the valve, drawing white paint from the paint container and spraying it out through the nozzle. Simultaneously, it controls the rotation of the spraying module along the slide rail on the second housing. The dotting module includes a dotting control valve, a dotting telescopic shaft, a dotting rod, and a telescopic dotting pen. The dotting control valve is connected to the slide rail. The dotting control valve has an embedded Bluetooth module that receives signals from the fixed control valve to control the rotation of the dotting module along the slide rail on the second housing, while also controlling the actions of each component of the dotting module. The dotting rod is connected to the dotting telescopic shaft and is strip-shaped with multiple circular grooves for mounting the telescopic dotting pen. The drying module consists of two drying lamps.

[0026] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a device for rapidly and continuously generating speckle fields based on laser scanning. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of a device for rapidly and continuously generating speckle fields based on laser scanning. Figure 2 ;

[0031] Figure 3 This is a schematic diagram of a device for rapidly and continuously generating speckle fields based on laser scanning. Figure 3 ;

[0032] Figure 4 This is a schematic diagram of the scanning mechanism;

[0033] Figure 5 This is a schematic diagram of the actuator;

[0034] Figure 6 This is a flowchart of a method for rapidly and continuously creating speckle fields based on laser scanning.

[0035] The labels in the diagram are as follows: 1. Control base; 2. Fixing plate; 3. Control rod; 4. Actuator; 5. Scanning mechanism; 6. Rotating mechanism; 7. Computer; 8. Baffle; 9. Laser emitting rod; 10. Support frame; 11. Rotating belt; 12. Telescopic controller; 13. Laser controller; 14. Cable tray; 15. First outer shell; 16. Slide rail; 17. Dotting control valve; 18. Dotting telescopic shaft; 19. Paint spraying control valve; 20. Dotting rod; 21. Sliding rod; 22. Telescopic dotting pen; 23. Nozzle; 24. Drying lamp; 25. Fixing control valve; 26. Paint container; 27. Telescopic shaft; 28. Coal and rock specimen; 29. ​​Second outer shell. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments 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 effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the terms "one side", "the other side", "both sides", "between", "middle", "upper end", "lower end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The apparatus and method for rapidly and continuously generating speckle fields based on laser scanning according to embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] See Figures 1-6 The method for rapid and continuous speckle field fabrication based on laser scanning of the present invention includes the following steps:

[0041] The first step involves computer 7 initiating a rapid, continuous speckle field fabrication device based on laser scanning. The computer 7 then sets the dot spacing and interval for the actuator 4. The minimum set spacing and interval prevent the dots made by the telescopic dot pen 22 from connecting and interleaving. Simultaneously, multiple spacing and interval settings can be configured according to experimental needs. After each set of spacing and interval settings is completed, the number of coal and rock specimens 28 within the set can be set. After the speckle arrangement of the coal and rock specimens 28 within a set is completed, the process automatically continues to the next set. It should be noted that the speckle spacing is controlled by the telescopic frequency of the dot pen 22, while the interval only increases or decreases by a multiple of the diameter of the dot pen 22. When the interval increases, some dot pens 22 retract and do not participate in the dotting process. When the interval is at its minimum, all dot pens 22 operate simultaneously; in other words, when the interval is at its minimum, there are no inactive dot pens 22 among those participating in the dotting process.

[0042] The second step involves placing a batch of coal and rock specimens 28 sequentially above the small circular holes on the rotating belt 11 between the baffle 8 and the scanning mechanism 5. The coal and rock specimens 28 rotate smoothly with the rotating belt 11. It should be noted that the shape of the small holes on the rotating belt 11 can be any shape other than circular, as long as it does not affect the placement of the coal and rock specimens 28 or the passage of the telescopic controller 12.

[0043] In the third step, the coal and rock specimen 28 first passes through the scanning mechanism 5. The laser emitted by the laser emitting rod 9 scans the size of each coal and rock specimen 28. The scanning results are transmitted back to the computer 7 by the laser controller 13 and automatically stored in the set spacing group. The first group is automatically stored. After the number of items in the group is full, the next group is stored.

[0044] In the fourth step, after receiving the dimensions of the coal and rock specimen 28 scanned by the scanning mechanism 5, the computer 7 simultaneously issues instructions to the actuator 4. The actuator 4 automatically adjusts the positions of the fixing module (which includes a fixing control valve 25 and a telescopic shaft 27), the painting module (which includes a painting control valve 19, a sliding rod 21, a nozzle 23, and a paint container 26), and the dotting module (which includes a dotting control valve 17, a dotting telescopic shaft 18, a dotting rod 20, and a telescopic dotting pen 22) according to the dimensions of each coal and rock specimen 28. Specifically, the fixing control valve 25 in the fixing module controls the telescopic shaft 27 to extend and retract to a position that can cooperate with the telescopic controller 12 to clamp the coal and rock specimen 28, and then the painting begins. In the module, the paint spraying control valve 19 controls the nozzle 23 to move on the sliding rod 21 to the position between the telescopic shaft 27 and the telescopic controller 12. In the dotting module, the dotting control valve 17 extends and retracts the dotting telescopic shaft 18 according to the diameter of the coal and rock specimen 28 until the telescopic dotting pen 22 can contact the coal and rock specimen 28. Then the telescopic dotting pen 22 automatically retracts. The telescopic dotting pen 22 that does not participate in the speckle arrangement will not pop out again. At the same time, the telescopic dotting pen 22 is designed according to the shape of the coal and rock specimen 28 to ensure that the speckle can be evenly arranged on the surface of the coal and rock specimen 28. The actuator 4 adjusts the position of the internal modules in sequence according to the different coal and rock specimen 28 sizes transmitted by the computer 7.

[0045] Fifth step: When the first coal and rock specimen 28 reaches directly above the telescopic controller 12, the rotating belt 11 stops rotating, the drying module is activated, and the cylindrical telescopic rod in the telescopic controller 12 smoothly raises the coal and rock specimen 28 by 110mm, clamping it together with the telescopic shaft 27 in the actuator 4. Subsequently, the fixed control valve 25 in the fixed module controls the painting module and the dotting module to rotate along the slide rail 16. During rotation, the painting module first evenly sprays white paint onto the coal and rock specimen 28, while the drying module dries the white paint on the coal and rock specimen 28. After rotating 360°, the painting module stops painting, and the dotting module performs telescopic dotting according to the command set in the first step. After rotating 360°, the dotting pattern arrangement is completed.

[0046] In the sixth step, after the speckle pattern arrangement is completed, the telescopic controller 12 drives the coal and rock specimen 28 to fall smoothly onto the rotating belt 11. The cylindrical telescopic shaft on the telescopic controller 12 returns to its original position. The actuator 4 adjusts the position of the internal module (the internal module is the fixing module, the painting module, and the dotting module) according to the size of the next coal and rock specimen 28. The rotating belt 11 continues to rotate, and the fifth step is repeated until the speckle pattern arrangement of all coal and rock specimens 28 is completed.

[0047] Step 7: After the scattered spot field arrangement is completed, the coal and rock specimen 28 continues to rotate with the rotating belt 11 and finally slides smoothly down to the storage place through the baffle 8. At this point, a complete scattered spot field arrangement process is completed.

[0048] See Figures 1-6 The present invention also provides an apparatus for realizing a method for rapidly and continuously producing speckle fields based on laser scanning, comprising a control system, an actuator 4, a scanning mechanism 5, and a rotating mechanism 6; the rotating mechanism 6 is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the rotating mechanism 6; the scanning mechanism 5 is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the scanning mechanism 5; the actuator 4 is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the actuator 4.

[0049] The control system includes a control base 1, a fixing plate 2, a control lever 3, and a computer 7. The control base 1 is responsible for connecting to each system (i.e., the actuator 4, the scanning mechanism 5, and the rotating mechanism 6) and transmitting data to the computer 7. The fixing plate 2 is mounted on the control base 1 and connected to it via data transmission lines. The control lever 3 is embedded inside the fixing plate 2 and communicates with its internal wiring space, used to connect and fix the actuator 4. Specifically, the computer 7 has embedded control software that can control the start and stop of the device for rapidly and continuously producing speckle fields based on laser scanning, and also has basic functions such as display, storage, editing, and querying. The control base 1 is located in the middle of the entire device, serving as the control hub responsible for connecting to each system and transmitting data to the computer 7. Except for the space used for connecting lines, the remaining area of ​​the control base 1 is made of solid steel material to fix the entire device. The fixing plate 2 is connected to the control base 1 and has built-in data transmission lines for information transmission and fixing the control lever 3.

[0050] The rotating mechanism 6 includes a baffle 8, a support frame 10, a rotating belt 11, and a telescopic controller 12; the support frame 10 is a ring structure and is located on the periphery of the control base 1; the rotating belt 11 is used to place the coal and rock specimen 28, wherein the length of the coal and rock specimen 28 is set to L, the width to W, and the height to H, and the size range of the coal and rock specimen 28 is 40mm×40mm×40mm<L×W×H<110mm×110mm×110mm. The rotating belt 11 is located on the support frame 10. After the rotating mechanism 6 is started, the rotating belt 11 can rotate smoothly on the support frame 10. The baffle 8 is used to stop the coal and rock specimen 28. The baffle 8 is located above the rotating belt 11. The baffle 8 is fixed on the support frame 10 and is not connected to the rotating belt 11, so it does not affect the normal rotation of the rotating belt. The telescopic controller 12 is located inside the support frame 10 and below the rotating belt 11. The telescopic controller 12 is used to smoothly raise the coal and rock specimen 28 by 110mm. After the speckle pattern is made, it is then smoothly lowered back to its original position. Specifically, the rotating mechanism 6 is connected to the computer 7 via a signal transmission cable passing through the control base 1, and is started and stopped by the computer 7. The support frame 10 is an elliptical frame with a hollow interior, which can maintain the stability of the entire rotating mechanism 6. At the same time, the rotating belt 11 is controlled by the computer 7 to adjust its rotation speed. The rotating belt 11 has several evenly distributed circular holes with a diameter of 30mm, which are used to place the coal and rock specimen 28. The telescopic controller 12 is connected to the computer 7 through the control base 1. The telescopic controller 12 is cylindrical and has a cylindrical telescopic rod with a diameter of 20mm. The telescopic controller 12 and the telescopic rod are an integral structure. The diameter of the hole in the telescopic controller 12 is slightly larger than the diameter of the telescopic rod. The telescopic rod can be precisely controlled by the computer 7 to pass through the circular holes on the rotating belt 11, smoothly raising the coal and rock specimen 28 by 110mm. After the speckle pattern is prepared, it is then smoothly lowered back to its original position.

[0051] The scanning mechanism 5 is connected to the computer 7 via the control base, and the scanning mechanism 5 starts and stops synchronously with the rotating mechanism 6. The scanning mechanism 5 is mounted directly above the rotating mechanism 6, and the scanning mechanism 5 does not interfere with the rotation of the rotating belt 11 and the coal and rock specimen 28. The scanning mechanism 5 includes a laser emitting rod 9, a laser controller 13, a cable tray 14, and a first housing 15. The first housing 15 has a gantry-type structure and is mounted on the circumferential width of the support frame 10, without contacting the support frame 10. The laser controller 13 is installed on both sides of the inner wall of the first housing 15 and is connected to the computer 7 via a signal transmission line. The laser controller 13 controls laser emission, receives laser scanning information, and feeds it back to the computer 7. The laser emitting rod 9 is connected to the laser controller 13 via a signal transmission line. The laser emitting rod 9 receives the control signal from the laser controller 13 and emits a scanning laser to scan the dimensions of the coal and rock specimen 28, which is then fed back to the computer 7 by the laser controller 13. The cable tray 14 is used to install the signal transmission line, with both ends of the cable tray 14 connected to the two laser controllers 13 respectively, and is mounted above the laser emitting rod 9. Specifically, the scanning mechanism 5 is open inside and out, and is mounted directly above the rotating mechanism 6. The interior of the scanning mechanism 5 has enough space for the rotating belt 11 and the coal and rock specimen 28 to pass through smoothly. The first outer shell 15 is a square metal shell that is open inside and out, and is used to fix the entire scanning mechanism 5.

[0052] The actuator 4 is connected to the control lever 3. The actuator 4 is connected to the computer 7 via the fixing plate 2 and the control base 1. The actuator 4 is located directly above the rotating belt 11. The actuator 4 includes a fixing module, a painting module, a dotting module, a drying module, and a second housing 29. The fixing module is installed in the middle of the top of the inner wall of the second housing 29 and is used to fix the coal and rock specimen 28. A slide rail 16 is installed on the circumference of the inner wall of the second housing 29. The painting module and the dotting module are respectively installed on the slide rail 16 and rotate 360° along the slide rail 16. The drying module is installed on both sides of the top of the inner wall of the second housing 29 and is used to dry the paint on the surface of the coal and rock specimen 28. The drying module starts simultaneously with the rotating mechanism 6. The second housing 29 is connected to the control lever 13. Specifically, the lower part of the actuator 4 is cylindrical and the upper part is hemispherical; the distance between the bottom of the actuator 4 and the rotating belt 11 is 110mm; the fixing module is installed at the top center of the inner wall of the actuator 4; the painting module and the dotting module are respectively installed on the slide rail 16 on the inner wall of the second housing 29 of the actuator 4, and the painting module and the dotting module can rotate 360° along the inner wall of the actuator 4; the drying module is located on both sides of the top of the inner wall of the actuator 4, and the drying module consists of two drying lamps 24, which are started simultaneously with the rotating mechanism 6; the second housing 29 of the actuator 4 is a hard and lightweight housing, and the second housing 29 is connected to the control rod 13 to ensure the stability of the actuator 4 during operation; the inner wall of the second housing 29 has a slide rail 16, which allows the painting module and the dotting module to rotate.

[0053] The fixed module includes a fixed control valve 25 and a telescopic shaft 27. The fixed control valve 25 is located at the top of the fixed module and connected to the inner wall of the second housing 29. The fixed control valve 25 is used to receive signals from the computer 7 and control the extension and retraction of the telescopic shaft 27. Specifically, the fixed control valve 25 has a built-in Bluetooth module that can send and receive signals and issue commands to the painting module and the dotting module. The telescopic shaft 27 is controlled by the fixed control valve 25 to extend to a fixed position and cooperate with the telescopic controller 12 to clamp the coal and rock specimen 28.

[0054] The painting module includes a painting control valve 19, a sliding rod 21, a nozzle 23, and a paint container 26; the paint container 26 is connected to the slide rail 16; the painting control valve 19 has an embedded Bluetooth module connected to the paint container 26, and the painting control valve 19 receives the signal from the fixed control valve 25 to control the opening and closing of the valve of the paint container 26, and draws white paint from the paint container 26 to be sprayed out from the nozzle 23, while controlling the painting module to rotate along the slide rail 16 on the second housing 29. Specifically, the paint container 26 is an oval-shaped container. When the valve of the paint container 26 is closed, it is in a sealed state to ensure that the white paint inside will not dry. The sliding rod 21 is a long strip rod with an inner groove for connecting the paint control valve 19 and the nozzle 23. The inner groove of the sliding rod 21 is smooth without any bumps. The nozzle 23 is embedded in the sliding rod 21 and is controlled by the paint control valve 19. It can evenly scatter the white paint drawn from the paint container 26, and the nozzle 23 can move smoothly up and down the sliding rod 21 under the control of the paint control valve 19.

[0055] The dotting module includes a dotting control valve 17, a dotting telescopic shaft 18, a dotting rod 20, and a telescopic dotting pen 22. The dotting control valve 17 is connected to the slide rail 16. The dotting control valve 17 has an embedded Bluetooth module that receives signals from the fixed control valve 25 to control the dotting module to rotate along the slide rail 16 on the second housing 29, and simultaneously controls the behavior of each component of the dotting module. The dotting rod 20 is connected to the dotting telescopic shaft 18 and is a strip with multiple circular slots for mounting the telescopic dotting pen 22. Specifically, the dotting telescopic shaft 18 is connected to the dotting control valve 17 and can extend and retract to a certain length. The telescopic dotting pen 22 is installed on the circular slots of the dotting rod 20. The telescopic dotting pen 22 is controlled by the dotting control valve 17 to extend and retract to make dots. The telescopic dotting pen 22 can make regular circular black dots on the coal and rock specimen 28. The telescopic dotting pens 22 are closely spaced, but there are gaps between the black dots and they do not connect with each other. At the same time, the telescopic dotting pen 22 can make dots according to the feedback from the computer 7. It should be noted that currently the main colors are white paint and black dots, but any combination of colors can be made according to requirements.

[0056] This device and method for rapidly and continuously creating speckle fields based on laser scanning avoids errors caused by manual placement, reduces experimental errors, and improves the success rate of experiments, making it economical. Only one person is needed to place the coal and rock specimens 28, and speckle fields can be continuously arranged on a large number of coal and rock specimens 28 in a short time, demonstrating continuity and effectiveness. Furthermore, it avoids close contact between the human body and the sprayed paint, reducing the harm of the paint to the human body to a certain extent, thus ensuring safety.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for rapidly and continuously generating speckle fields based on laser scanning, characterized in that, Includes the following steps: The first step is to start the laser scanning-based rapid continuous speckle field production device by the computer (7) in the control system, and set the dot spacing and spacing of the actuator (4) on the computer (7). The minimum dot spacing and spacing set will not cause the dots made by the telescopic dot pen (22) to be connected in series. The second step is to place the batch of coal and rock specimens (28) in sequence above the small holes on the rotating belt (11) between the baffle (8) and the scanning mechanism (5). The coal and rock specimens (28) rotate smoothly with the rotating belt (11) in the rotating mechanism. The third step is that the coal and rock specimen (28) first passes through the scanning mechanism (5), and the laser emitted by the laser emitting rod (9) scans the size of each coal and rock specimen (28). The scanning results are transmitted back to the computer (7) by the laser controller (13) and automatically stored in the set spacing group. Fourth step: After receiving the size of the coal and rock specimen (28) scanned by the scanning mechanism (5), the computer (7) simultaneously issues an instruction to the execution mechanism (4). The execution mechanism (4) automatically adjusts the positions of the fixing module, the painting module and the dotting module in sequence according to the size of each coal and rock specimen (28). Fifth step: When the first coal and rock specimen (28) reaches directly above the telescopic controller (12), the rotating belt (11) stops rotating, the drying module is turned on, the telescopic controller (12) smoothly raises the coal and rock specimen (28) and clamps the coal and rock specimen (28) together with the telescopic shaft (27) in the actuator (4). Then, the fixed control valve (25) in the fixed module controls the painting module and the dotting module to rotate along the slide rail (16). When rotating, the painting module first sprays paint evenly on the coal and rock specimen (28), and at the same time, the drying module dries the paint on the coal and rock specimen (28). After rotating 360°, the painting module stops spraying paint, and the dotting module performs telescopic dotting according to the command set in the first step. After rotating 360°, the dotting field arrangement is completed. In the sixth step, after the scattered spot field is arranged, the telescopic controller (12) drives the coal and rock specimen (28) to fall smoothly onto the rotating belt (11). The telescopic controller (12) returns to its original position, and the actuator (4) adjusts the position of the internal module according to the size of the next coal and rock specimen (28). The rotating belt (11) continues to rotate, and the fifth step is repeated until the scattered spot field arrangement of all coal and rock specimens (28) is completed. Step 7: After the coal and rock specimens (28) are arranged in the spot field, they continue to rotate with the rotating belt (11) and finally slide smoothly down to the storage place through the baffle (8).

2. The method for rapid and continuous fabrication of speckle fields based on laser scanning according to claim 1, characterized in that: In the fourth step, the actuator (4) automatically adjusts the positions of the fixing module, the painting module and the dotting module according to the size of each coal and rock specimen (28). Specifically, the fixing control valve (25) in the fixing module controls the telescopic shaft (27) to extend and retract to a position that can cooperate with the telescopic controller (12) to clamp the coal and rock specimen (28) according to the height of the coal and rock specimen (28). The painting control valve (19) in the painting module controls the nozzle (23) to move to the middle position between the telescopic shaft (27) and the telescopic controller (12). The dotting control valve (17) in the dotting module extends and retracts the dotting telescopic shaft (18) to a position where the telescopic dotting pen (22) can contact the coal and rock specimen (28) according to the diameter of the coal and rock specimen (28), and then the telescopic dotting pen (22) automatically retracts.

3. An apparatus for implementing the method of rapid and continuous speckle field fabrication based on laser scanning as described in claim 1, characterized in that: It includes a control system, an actuator (4), a scanning mechanism (5), and a rotating mechanism (6); The rotating mechanism (6) is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the rotating mechanism (6). The scanning mechanism (5) is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the scanning mechanism (5). The actuator (4) is connected to the control system via a signal transmission cable, and the control system controls the start and stop of the actuator (4).

4. The apparatus according to claim 3, characterized in that: The control system includes a control base (1), a fixing plate (2), a control rod (3), and a computer (7). The control base (1) is responsible for connecting with various systems and transmitting data to the computer (7). The fixing plate (2) is installed on the control base (1) and connected to the control base (1) through a data transmission line; The control rod (3) is embedded inside the fixed plate (2) and communicates with the internal wiring space of the fixed plate (2) for connecting and fixing the actuator (4).

5. The apparatus according to claim 4, characterized in that: The rotating mechanism (6) includes a baffle (8), a support frame (10), a rotating belt (11), and a telescopic controller (12). The support frame (10) is a ring structure and is located on the periphery of the control base (1); The rotating belt (11) is used to place coal and rock specimens (28). The rotating belt (11) is located on the support frame (10). After the rotating mechanism (6) is started, the rotating belt (11) rotates on the support frame (10). The baffle (8) is used to stop the coal and rock specimen (28). The baffle (8) is located above the rotating belt (11). The baffle (8) is fixed on the support frame (10) and is not connected to the rotating belt (11). The telescopic controller (12) is located inside the support frame (10) and below the rotating belt (11).

6. The apparatus according to claim 5, characterized in that: The scanning mechanism (5) is connected to the computer (7) via the control base (1), and the scanning mechanism (5) and the rotating mechanism (6) start and stop synchronously. The scanning mechanism (5) is mounted directly above the rotating mechanism (6). The scanning mechanism (5) does not interfere with the rotation of the rotating belt (11) and the coal and rock specimen (28).

7. The apparatus according to claim 6, characterized in that: The scanning mechanism (5) includes a laser emitting rod (9), a laser controller (13), a wire groove (14), and a first housing (15). The first outer shell (15) is a gantry-shaped structure. The first outer shell (15) is mounted on the circumferential width of the support frame (10), and the first outer shell (15) does not contact the support frame (10). The laser controller (13) is installed on both sides of the inner wall of the first housing (15). The laser controller (13) is connected to the computer (7). The laser controller (13) is used to control laser emission, receive laser scanning information, and feed it back to the computer (7). The laser emitting rod (9) is connected to the laser controller (13). The laser emitting rod (9) receives the control signal sent by the laser controller (13) and emits a scanning laser. The scanning laser is used to scan the size of the coal and rock specimen (28), and the laser controller (13) feeds back to the computer (7). The cable tray (14) is used to install signal transmission lines. The two ends of the cable tray (14) are connected to two laser controllers (13) respectively, and the cable tray (14) is mounted above the laser emitting rod (9).

8. The apparatus according to claim 7, characterized in that: The actuator (4) is connected to the control rod (3), and the actuator (4) is connected to the computer (7) via the fixing plate (2) and the control base (1). The actuator (4) is located directly above the rotating belt (11).

9. The apparatus according to claim 8, characterized in that: The actuator (4) includes a fixing module, a painting module, a dotting module, a drying module, and a second housing (29). The fixing module is installed at the middle position of the top of the inner wall of the second outer shell (29), and the fixing module is used to fix the coal and rock specimen (28). The inner wall of the second outer shell (29) is equipped with a slide rail (16) in the circumferential direction. The painting module and the dotting module are respectively installed on the slide rail (16). The painting module and the dotting module rotate 360° along the slide rail (16). The drying module is installed on both sides of the top of the inner wall of the second outer shell (29), and the drying module is used to dry the paint on the surface of the coal and rock specimen (28); The second housing (29) is connected to the control lever (3).

10. The apparatus according to claim 9, characterized in that: The fixed module includes a fixed control valve (25) and a telescopic shaft (27); the fixed control valve (25) is located at the top of the fixed module and connected to the inner wall of the second housing (29). The fixed control valve (25) is used to receive signals from the computer (7) and control the extension and retraction of the telescopic shaft (27); the fixed control valve (25) has a built-in Bluetooth module that can send and receive signals to the painting module and the dotting module and issue instructions. The painting module includes a painting control valve (19), a sliding rod (21), a nozzle (23), and a paint container (26); the paint container (26) is connected to the slide rail (16); the painting control valve (19) has an embedded Bluetooth module connected to the paint container (26), the painting control valve (19) receives the signal from the fixed control valve (25) to control the opening and closing of the valve of the paint container (26), and draws white paint from the paint container (26) and sprays it out from the nozzle (23), while controlling the painting module to rotate along the slide rail (16) on the second housing (29); the sliding rod (21) has an inner groove for connecting the painting control valve (19) and the nozzle (23); the nozzle (23) is embedded in the sliding rod (21), controlled by the painting control valve (19), and can evenly scatter the white paint drawn from the paint container (26), and the nozzle (23) can move smoothly up and down on the sliding rod (21) under the control of the painting control valve (19); The dotting module includes a dotting control valve (17), a dotting telescopic shaft (18), a dotting rod (20), and a telescopic dotting pen (22); the dotting control valve (17) is connected to the slide rail (16); the dotting control valve (17) has an embedded Bluetooth module that receives signals from the fixed control valve (25) to control the dotting module to rotate along the slide rail (16) on the second housing (29), and at the same time controls the behavior of each component of the dotting module; the dotting rod (20) is connected to the dotting telescopic shaft (18), and the dotting rod (20) is strip-shaped with multiple round grooves for installing the telescopic dotting pen (22). The drying module consists of two drying lamps (24).

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