High-precision laser photoacoustic detection device and detection method

Abstract

The invention discloses a high-precision laser photoacoustic detection device and method, and relates to the technical field of accessories used by high-precision laser photoacoustic detection devices.The high-precision laser photoacoustic detection device comprises a high-precision laser photoacoustic detector body, a bottom clamping plate, a top clamping plate, a sliding block and a laser photoacoustic multi-angle adjusting component; according to the invention, laser photoacoustic multi-angle automatic adjustment can be carried out through the laser photoacoustic multi-angle adjustment part, uncertainty of the position of a detected target in the detection process is avoided, different positions of the target are flexibly detected, additional manual adjustment by an operator is not needed, the detection precision is prevented from being influenced by manual adjustment and alignment of the target, and the detection efficiency is improved. And the efficiency and the detection precision of laser photoacoustic detection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of accessories for high-precision laser photoacoustic detection devices, and specifically relates to a high-precision laser photoacoustic detection device and a detection method. Background Art

[0002] The working principle of most high-precision laser photoacoustic detectors is to emit laser light of a specific wavelength. After the target substance absorbs the laser energy, it is converted into heat energy through non-radiative relaxation, triggering thermoelastic expansion to generate sound waves. The sound waves propagate in the medium and are detected by a high-sensitivity acoustic sensor and converted into an electrical signal. Through signal processing and analysis, relevant information about the target substance is obtained. However, it is found that most of them do not have automatic multi-angle adjustment of laser photoacoustics. To avoid the uncertainty of the position of the detection target during the detection process, different positions of the detection target need to be flexibly detected. If the device cannot automatically adjust the angle corresponding to different positions, the operator needs to manually adjust, and it is difficult to ensure accurate alignment with the target every time and the operation is troublesome, thus reducing the accuracy of laser photoacoustic detection. For example, the prior art with the application number CN217819989U provides a laser photoacoustic monitoring and protection device for outdoor use. It includes a box body, a box door is hinged to the front of the box body, a mounting plate is slidably installed inside the box body, a monitoring device is installed on the front of the mounting plate, a screw rod is rotatably installed on one side inside the box body, a handle is fixedly installed at one end of the screw rod, one side of the mounting plate is threadedly sleeved on the screw rod, and a guide rod is fixedly installed on the other side inside the box body. The other side of the mounting plate is slidably sleeved on the guide rod. Through the settings of the mounting plate, the monitoring device, the screw rod, the handle, and the guide rod, when it is necessary to repair the monitoring device, the handle can be used to control the rotation of the screw rod, so that the screw rod drives the mounting plate to move along the length direction of the screw rod, and the mounting plate drives the monitoring device to move out of the box body, and then the monitoring device can be repaired, which is convenient for repair operations. From the actual use situation of the above prior art, it is mainly known that the monitoring device can be repaired by driving the mounting plate to move the monitoring device out of the box body; however, it is found in use that it does not have automatic multi-angle adjustment of laser photoacoustics. To avoid the uncertainty of the position of the detection target during the detection process, different positions of the detection target need to be flexibly detected. If the device cannot automatically adjust the angle corresponding to different positions, the operator needs to manually adjust, and it is difficult to ensure accurate alignment with the target every time and the operation is troublesome, thus reducing the accuracy of laser photoacoustic detection. Therefore, according to the actual use situation, the above prior art is improved. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. In this section, as well as in the abstract and title of the present application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] In view of the above and / or problems existing in the prior art, the present invention is proposed.

[0005] To achieve the above object, the present invention provides the following technical solutions: A high-precision laser photoacoustic detection device includes a high-precision laser photoacoustic detector body, a bottom clamping plate, a top clamping plate, a slider, and a laser photoacoustic multi-angle adjustment component. A bottom clamping plate is provided on the outer side wall of the bottom of the high-precision laser photoacoustic detector body. A top clamping plate is slidably connected to the inner cavity at the top of one side of the bottom clamping plate. A slider is provided on the outer side wall of one end of the bottom clamping plate. The execution end on the outer side wall of the slider is slidably connected to the side wall of one side of the top clamping plate. And a laser photoacoustic multi-angle adjustment component is provided in the inner cavity of the outer side wall of one side of the bottom clamping plate.

[0006] Further: The laser photoacoustic multi-angle adjustment component includes a support shell frame plate provided in the inner cavity of the outer side wall of one side of the bottom clamping plate. A first motor is installed on the side wall of the top of the support shell frame plate. One end of the execution end of the first motor is rotatably connected to the side wall of the intermediate partition plate at the middle position of the support shell frame plate. And one end of the execution end of the first motor is provided with a worm. One end of the bottom of the worm is rotatably connected to the side wall of the bottom of the support shell frame plate. And a worm gear is engaged with one side of the worm. A round rod is embedded in the middle position of the worm gear. One end of the round rod is rotatably connected to the side wall of one side of the support shell frame plate. And the other end of the round rod is rotatably connected to the outer side wall of the support shell frame plate. And the other end of the round rod extends to the outer side wall of the support shell frame plate. And a transverse adjustment member is provided at the other end of the round rod.

[0007] Further: The transverse adjustment member includes a support plate provided at the other end of the round rod. A second motor is installed on the side wall of one side of the support plate. One end of the execution end of the second motor is rotatably connected to the side wall of the intermediate partition plate at the middle position of the support plate. And a first gear is embedded in the outer side wall of the execution end of the second motor. A second gear is engaged with the bottom of one side of the first gear. A lead screw is embedded in the middle of the second gear. One end of the lead screw is rotatably connected to the side wall of the intermediate partition plate at the middle position of the support plate. And the other end of the lead screw is rotatably connected to the side wall of the other side of the support plate. And a moving block that matches the thread is connected to the outer side wall of the lead screw. Two sets of square connecting rods with the same structure are hinged to the outer side walls on both sides of the moving block. Connecting plates are provided on both sets of square connecting rods. A rotating bearing member is hinged to the other side of the connecting plate. The outer side wall of the other side of the rotating bearing member is rotatably connected to the outer side wall of the other side of the bottom clamping plate.

[0008] Further: The connecting plate includes a focusing lens piece embedded in the middle position. A laser photoacoustic lens is provided on the outer wall of one side of the focusing lens piece, and an inclined cover is provided on the outer wall of the other side of the focusing lens piece. An installation sleeve is provided on the outer wall of one side of the top of the connecting plate, and a first screw rod is threadedly connected to the top of the outer wall of one side of the connecting plate.

[0009] Further: The installation sleeve includes a camera provided on the inner side wall.

[0010] Further: The laser photoacoustic lens includes an antireflection film provided on the outer side wall, and a fixing block is provided on one side of the laser photoacoustic lens. A thread groove matching the first screw rod is provided on the side wall of the fixing block.

[0011] Further: The support plate includes a support round rod provided on the side wall adjacent to the lead screw. The other end of the support round rod is provided on the outer side wall of the other side of the support plate, and the outer side wall of the execution end of the support round rod is slidably connected to the side wall of the moving block.

[0012] Further: The inclined cover includes a reflecting lens provided on the outer side wall.

[0013] Further: A second screw rod matching the top of the clamping plate is threadedly connected to the outer wall of one side of the top of the clamping plate, and one end of the second screw rod extends to the outer side wall of the slider.

[0014] A detection method for a high-precision laser photoacoustic detection device, the method comprising the following steps: Step 1: The operator manually places the high-precision laser photoacoustic detector body on the outer wall of the top of the bottom clamping plate. Manually slide and adjust the top clamping plate in the inner cavity at the top of one side of the bottom clamping plate, so that the outer wall of the bottom of the top clamping plate abuts against the top of the high-precision laser photoacoustic detector body for clamping. Manually rotate the second screw threadedly connected to the outer wall of one side of the top clamping plate to abut against the outer wall of the slider for fixing. Then, the inclined cover in the laser photoacoustic multi-angle adjustment component covers the circular surface laser lens at the front of the high-precision laser photoacoustic detector body. When the laser photoacoustic angle needs to be adjusted, through the image recognition algorithm built into the camera on the inner side wall of the mounting sleeve, the lens can automatically identify and track specific object detection samples at different position information. Transmit an electrical signal to the plc controller, and the plc control controller receives the electrical signal and transmits and triggers the first motor and the second motor to rotate. When the plc controller triggers the execution end of the first motor to drive one end provided with a worm to rotate at the bottom end of the worm, which is rotatably connected to the bottom side wall of the support shell frame plate for support rotation. The rotation of the worm drives the meshing of a worm gear on one side to rotate. The rotation of the worm gear drives a round rod embedded in the middle position to rotate at one end rotatably connected to the side wall of one side of the support shell frame plate and the other end rotatably connected to the outer side wall of the support shell frame plate for support rotation. The rotation of the round rod drives the other end provided with a transverse adjustment component to rotate through the rotation bearing component on the outer side wall of the other side and is rotatably connected to the outer wall of the other side of the bottom clamping plate for longitudinal angle adjustment. The worm and the worm gear themselves have self-locking properties to avoid loosening and displacement; Step 2: When adjusting the horizontal angle, the PLC controller triggers the execution end of the second motor to drive the outer wall embedded with the first gear to rotate at one end of the execution end, which is rotatably connected to the middle position of the support plate and the side wall of the partition plate for supporting rotation. The rotation of the first gear drives the second gear meshing at one side of the bottom to rotate. The rotation of the second gear drives the screw rod embedded in the middle to rotate at one end, which is rotatably connected to the side wall of the partition plate at the middle position of the support plate and the other end, which is rotatably connected to the side wall of the other side of the support plate for supporting rotation. The rotation of the screw rod drives the outer wall threaded with a matching moving block, and both outer side walls of the moving block are hinged with two groups of square connecting rods with the same structure to perform linear movement supported on the outer side wall of the execution end of the support round rod. The linear movement of the square connecting rod will also drive the connecting plates provided thereon to tilt to one side. Since one end of the two groups of square connecting rods is hinged to the moving block and the other end is fixedly arranged on the connecting plate, and the other side of the connecting plate is hinged with a rotating bearing part and rotates through the rotating bearing part, the linear movement of one end of the moving block drives the adjustment of the tilt angle of one end of the connecting plate. The linear movement to the other end drives the adjustment of the tilt angle of the other end of the connecting plate as described above, facilitating the adjustment of the horizontal angle. After the above longitudinal and horizontal adjustments, when the high-precision laser photoacoustic detector body emits laser photoacoustic waves, the laser photoacoustic waves will be reflected by the inclined cover including the reflecting lens arranged on the outer side wall to the focusing lens for convergence. Since the focusing lens can highly concentrate the energy of the reflected laser beam, improve the photoacoustic conversion efficiency, and enhance the transmission of the photoacoustic signal to the laser photoacoustic lens for emission. The laser photoacoustic lens includes an antireflection film arranged on the outer side wall, which effectively improves the transmittance of the laser photoacoustic detection lens to the laser of a specific wavelength, reduces the loss of light energy, and improves the detection sensitivity. By coating multiple antireflection films on the surface of the laser photoacoustic lens, the reflected light cancels each other out, thereby increasing the light transmittance and facilitating the reflected convergence detection after the angle adjustment; Step 3: Through the above operations, it is convenient to automatically adjust the laser photoacoustic waves at multiple angles, avoiding the uncertainty of the position of the detection target during the detection process, flexibly detecting different positions of the detection target, and not requiring additional manual adjustment by the operator. Moreover, it avoids the influence of manual adjustment on the detection accuracy, improving the detection efficiency and detection accuracy of the laser photoacoustic detection. And by manually screwing the first screw rod on the top of the outer wall of one side of the connecting plate away from the fixed block, a threaded groove matching the first screw rod is provided on the side wall, which is convenient for disassembling and cleaning the laser photoacoustic lens.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can automatically adjust the laser photoacoustic waves at multiple angles through the laser photoacoustic multi-angle adjustment component, avoiding the uncertainty of the position of the detection target during the detection process, flexibly detecting different positions of the detection target, not requiring additional manual adjustment by the operator, and avoiding the influence of manual adjustment on the detection accuracy, improving the detection efficiency and detection accuracy of the laser photoacoustic detection.

[0016] Other features and advantages of the present application will be described in the following specification. Moreover, some of them will become apparent from the specification or be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the written specification and the accompanying drawings.

[0017] The technical solution of the present application will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required for the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Structural schematic diagram of the present invention; Figure 2 Side view structural schematic diagram of the present invention; Figure 3 Rear view structural schematic diagram of the present invention; Figure 4 Cross-sectional structural schematic diagram of the laser photoacoustic multi-angle adjustment component of the present invention; Figure 5 Cross-sectional structural schematic diagram of the laser photoacoustic multi-angle adjustment component of the present invention; Figure 6 Cross-sectional structural schematic diagram of the lateral adjustment member of the present invention.

[0020] In the figure: 1, high-precision laser photoacoustic detector body; 2, bottom clamping plate; 3, top clamping plate; 31, second screw; 4, slider; 5, laser photoacoustic multi-angle adjustment component; 51, support shell frame plate; 52, worm; 53, first motor; 54, worm gear; 55, round rod; 56, lateral adjustment member; 561, support plate; 5611, support round rod; 562, second motor; 563, first gear; 564, second gear; 565, lead screw; 566, moving block; 567, square connecting rod; 568, connecting plate; 5681, focusing lens sheet; 5682, inclined cover; 56821, reflecting lens; 5683, laser photoacoustic lens; 56831, fixing block; 56832, antireflection coating; 5684, mounting sleeve; 56841, camera; 5685, first screw; 569, rotating bearing member. Detailed Description of the Embodiments

[0021] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings of the specification.

[0022] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0023] Secondly, the present invention is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views showing the device structure are enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0024] Furthermore, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively exclusive embodiments from other embodiments.

[0025] Please refer to Figure 1-6 , the present invention provides a technical solution: a high-precision laser photoacoustic detection device, including a high-precision laser photoacoustic detector body 1, a bottom clamping plate 2, a top clamping plate 3, a slider 4, and a laser photoacoustic multi-angle adjustment component 5; A bottom clamping plate 2 is provided on the outer side wall of the bottom of the high-precision laser photoacoustic detector body 1. A top clamping plate 3 is slidably connected to the inner cavity at the top of one side of the bottom clamping plate 2. A slider 4 is provided on the outer side wall of one end of the bottom clamping plate 2, and the execution end of the outer side wall of the slider 4 is slidably connected to the side wall of one side of the top clamping plate 3. In addition, a laser photoacoustic multi-angle adjustment component 5 is provided in the inner cavity of the outer side wall of one side of the bottom clamping plate 2. Through the laser photoacoustic multi-angle adjustment component 5, the multi-angle of the laser photoacoustic can be automatically adjusted, avoiding the uncertainty of the position of the detection target during the detection process, flexibly detecting different positions of the detection target, and eliminating the need for additional manual adjustment by the operator. Moreover, it avoids the influence of manual adjustment and alignment on the detection accuracy, improving the detection efficiency and accuracy of the laser photoacoustic detection.

[0026] Among them, preferably, the laser photoacoustic multi-angle adjustment component 5 includes a support shell frame plate 51 arranged in the inner cavity of the outer side wall of one side of the bottom clamping plate 2. A first motor 53 is installed on the top side wall of the support shell frame plate 51. One end of the execution end of the first motor 53 is rotatably connected to the side wall of the intermediate partition plate at the middle position of the support shell frame plate 51. And one end of the execution end of the first motor 53 is provided with a worm 52. One end of the bottom of the worm 52 is rotatably connected to the bottom side wall of the support shell frame plate 51. And a worm gear 54 is engaged on one side of the worm 52. A round rod 55 is embedded in the middle position of the worm gear 54. One end of the round rod 55 is rotatably connected to the side wall of one side of the support shell frame plate 51. And the other end of the round rod 55 is rotatably connected to the outer side wall of the support shell frame plate 51. And the other end of the round rod 55 extends to the outer side wall of the support shell frame plate 51. And a transverse adjustment member 56 is provided at the other end of the round rod 55. The plc control controller receives an electrical signal and transmits and triggers the rotation of the first motor 53 and the second motor 562. When the plc controller triggers the execution end of the first motor 53 to drive one end provided with a worm 52 to rotate in a supporting manner at one end of the bottom of the worm 52 which is rotatably connected to the bottom side wall of the support shell frame plate 51, the rotation of the worm 52 drives the worm gear 54 engaged on one side to rotate. The rotation of the worm gear 54 drives the round rod 55 embedded in the middle position to rotate in a supporting manner at one end rotatably connected to the side wall of one side of the support shell frame plate 51 and the other end rotatably connected to the outer side wall of the support shell frame plate 51. The rotation of the round rod 55 drives the transverse adjustment member 56 provided at the other end to rotate in a supporting manner through the rotating bearing member 569 on the outer side wall of the other side and is rotatably connected to the outer side wall of the other side of the bottom clamping plate 2 to adjust the longitudinal angle. The worm 52 and the worm gear 54 themselves have self-locking properties to avoid loosening and displacement.

[0027] Preferably, the lateral adjusting member 56 includes a support plate 561 provided at the other end of the round rod 55. A second motor 562 is installed on one side wall of the support plate 561. One end of the execution end of the second motor 562 is rotatably connected to the side wall of the partition plate at the middle position of the support plate 561. A first gear 563 is embedded on the outer side wall of the execution end of the second motor 562. A second gear 564 is engaged with the bottom of one side of the first gear 563. A lead screw 565 is embedded in the middle of the second gear 564. One end of the lead screw 565 is rotatably connected to the side wall of the partition plate at the middle position of the support plate 561, and the other end of the lead screw 565 is rotatably connected to the side wall of the other side of the support plate 561. A matching moving block 566 is threadedly connected to the outer side wall of the lead screw 565. Two groups of square connecting rods 567 with the same structure are hinged to the outer side walls on both sides of the moving block 566. Two groups of square connecting rods 567 are both provided with connecting plates 568. A rotating bearing member 569 is hinged to the other side of the connecting plate 568. The outer side wall of the other side of the rotating bearing member 569 is rotatably connected to the outer side wall of the other side of the bottom clamping plate 2. When the lateral angle is adjusted, the execution end of the second motor 562 is triggered by the plc controller to drive the first gear 563 embedded on the outer side wall to rotate at one end of the execution end, which is rotatably connected to the side wall of the partition plate at the middle position of the support plate 561 for supporting rotation. The rotation of the first gear 563 drives the second gear 564 engaged with the bottom of one side to rotate. The rotation of the second gear 564 drives the lead screw 565 embedded in the middle to rotate at one end rotatably connected to the side wall of the partition plate at the middle position of the support plate 561 and the other end rotatably connected to the side wall of the other side of the support plate 561 for supporting rotation. The rotation of the lead screw 565 drives the matching moving block 566 on the outer side wall and the two groups of square connecting rods 567 hinged to the outer side walls on both sides of the moving block 566 to perform linear movement supported by the outer side wall of the execution end of the support round rod 5611. The linear movement of the square connecting rod 567 will also drive the connecting plates 568 provided thereon to tilt to one side. Since one end of the two groups of square connecting rods 567 is hinged to the moving block 566 and the other end is fixedly provided on the connecting plate 568, and the other side of the connecting plate 568 is hinged with a rotating bearing member 569 and rotates through the rotating bearing member 569 at the same time, the linear movement of one end of the moving block 566 drives one end of the connecting plate 568 to adjust the tilt angle. The linear movement to the other end drives the other end of the connecting plate 568 to adjust the tilt angle as described above, facilitating the adjustment of the lateral angle.

[0028] Preferably, the connecting plate 568 includes a focusing lens 5681 embedded in the middle position. On one outer wall of the focusing lens 5681, a laser photoacoustic lens 5683 is provided. On the other outer wall of the focusing lens 5681, an inclined cover 5682 is provided. On one outer wall of the top of the connecting plate 568, a mounting sleeve 5684 is provided. On the top of one outer wall of the connecting plate 568, a first screw 5685 is threadedly connected. When the high-precision laser photoacoustic detector body 1 emits laser photoacoustic, the laser photoacoustic will be reflected by the reflecting lens 56821 provided on the outer wall of the inclined cover 5682 to the focusing lens 5681 for convergence. Since the focusing lens 5681 can highly concentrate the energy of the reflected laser beam, improve the photoacoustic conversion efficiency, and enhance the transmission of the photoacoustic signal to the laser photoacoustic lens 5683 for emission.

[0029] Preferably, the mounting sleeve 5684 includes a camera 56841 provided on the inner wall. Through the image recognition algorithm built into the camera 56841 in the prior art, the lens can automatically identify and track specific objects to detect different position information of the sample.

[0030] Preferably, the laser photoacoustic lens 5683 includes an antireflection film 56832 provided on the outer wall. On one side of the laser photoacoustic lens 5683, a fixing block 56831 is provided. A threaded groove matching the first screw 5685 is provided on the side wall of the fixing block 56831. By coating multiple antireflection films 56832 on the surface of the laser photoacoustic lens 5683, the reflected light cancels each other out, thereby increasing the light transmittance and facilitating the reflected convergence detection after angle adjustment.

[0031] Preferably, the support plate 561 includes a support round rod 5611 provided on the side wall adjacent to the lead screw 565. The other end of the support round rod 5611 is provided on the other outer wall of the support plate 561. The outer wall of the execution end of the support round rod 5611 is slidably connected to the side wall of the moving block 566. The support round rod 5611 facilitates the linear movement of the moving block 566 for support.

[0032] Preferably, the inclined cover 5682 includes a reflecting lens 56821 provided on the outer wall. The reflecting lens 56821 reflects the laser photoacoustic on the horizontal axis to the focusing lens 5681 for convergence due to its light reflection characteristics.

[0033] Preferably, a second screw 31 matching the threaded connection is provided on one outer wall of the top clamping plate 3. One end of the second screw 31 extends to the outer wall of the slider 4. By manually rotating the second screw 31 threadedly connected to one outer wall of the top clamping plate 3, it abuts against the outer wall of the slider 4 for fixation.

[0034] A detection method for a high-precision laser photoacoustic detection device, the method includes the following steps: Step 1: The operator manually places the high-precision laser photoacoustic detector body 1 on the outer side wall of the top of the bottom clamping plate 2. Manually slide and adjust the top clamping plate 3 in the inner cavity at the top of one side of the bottom clamping plate 2, so that the outer wall of the bottom of the top clamping plate 3 abuts against the top of the high-precision laser photoacoustic detector body 1 for clamping. Manually rotate the second screw 31 threadedly connected to the outer wall of one side of the top clamping plate 3 to abut against the outer wall of the slider 4 for fixation. Then, the inclined cover 5682 in the laser photoacoustic multi-angle adjustment component 5 covers the circular surface laser lens at the front of the high-precision laser photoacoustic detector body 1. When laser photoacoustic angle adjustment is required, through the image recognition algorithm built into the prior art with the camera 56841 provided on the inner side wall of the mounting sleeve 5684, the lens can automatically identify and track specific object detection samples at different position information, transmit electrical signals to the plc controller, and the plc control controller receives the electrical signals and transmits triggers to the first motor 53 and the second motor 562 to rotate. When the plc controller triggers the execution end of the first motor 53, one end is provided with a worm 52, and the bottom end of the worm 52 is rotatably connected to the bottom side wall of the support shell frame plate 51 for supporting rotation. The rotation of the worm 52 drives the rotation of a worm gear 54 engaged on one side. The rotation of the worm gear 54 drives the rotation of a round rod 55 embedded in the middle position, with one end rotatably connected to the side wall of one side of the support shell frame plate 51 and the other end rotatably connected to the outer side wall of the support shell frame plate 51 for supporting rotation. The rotation of the round rod 55 drives the other end to be provided with a lateral adjustment member 56, which is rotatably connected to the outer side wall of the other side of the bottom clamping plate 2 through the rotation bearing member 569 on the outer side wall for supporting the adjustment of the longitudinal angle. The worm 52 and the worm gear 54 themselves have self-locking properties to avoid loosening and displacement; Step 2: When adjusting the horizontal angle, the PLC controller triggers the execution end of the second motor 562 to drive the outer wall embedded with the first gear 563 to rotate at one end of the execution end, which is rotatably connected to the middle position of the support plate 561 and supported by the side wall of the partition plate. The rotation of the first gear 563 drives the second gear 564 meshed at the bottom of one side to rotate. The rotation of the second gear 564 drives the screw rod 565 embedded in the middle to rotate at one end, which is rotatably connected to the side wall of the partition plate at the middle position of the support plate 561 and at the other end, which is rotatably connected to the side wall of the other side of the support plate 561 for supporting rotation. The rotation of the screw rod 565 drives the outer wall threadedly connected with a matching moving block 566, and both outer side walls of the moving block 566 are hinged with two groups of square connecting rods 567 with the same structure to linearly move by supporting on the outer side wall of the execution end of the support round rod 5611. The linear movement of the square connecting rod 567 will also drive the connecting plates 568 provided thereon to tilt to one side. Since one end of the two groups of square connecting rods 567 is hinged to the moving block 566 and the other end is fixedly arranged on the connecting plate 568, and the other side of the connecting plate 568 is hinged with a rotating bearing member 569 and rotates through the rotating bearing member 569 at the same time, the linear movement of one end of the moving block 566 drives one end of the connecting plate 568 to adjust the tilt angle. The linear movement to the other end drives the other end of the connecting plate 568 to adjust the tilt angle as described above, facilitating the adjustment of the horizontal angle. After the above-mentioned vertical and horizontal adjustments, when the high-precision laser photoacoustic detector body 1 emits laser photoacoustics, the laser photoacoustics will be reflected by the inclined cover 5682 including the reflecting lens 56821 provided on the outer side wall to the focusing lens 5681 for convergence. Since the focusing lens 5681 can highly concentrate the energy of the reflected laser beam, improve the photoacoustic conversion efficiency, and enhance the photoacoustic signal to be transmitted to the laser photoacoustic lens 5683 and emitted. The laser photoacoustic lens 5683 includes an antireflection film 56832 provided on the outer side wall, which effectively improves the transmittance of the laser photoacoustic detection lens to the laser of a specific wavelength, reduces the loss of light energy, and improves the detection sensitivity. By coating multiple antireflection films 56832 on the surface of the laser photoacoustic lens 5683, the reflected light cancels each other out, thereby increasing the light transmittance and facilitating the reflected convergence detection after the angle adjustment; Step 3: Through the above operations, it is convenient to automatically adjust the laser photoacoustics at multiple angles, avoid the uncertainty of the position of the detection target during the detection process, flexibly detect different positions of the detection target, and do not require additional manual adjustment by the operator. Moreover, it avoids the influence of manual adjustment to align the target on the detection accuracy, improves the detection efficiency and detection accuracy of the laser photoacoustics. And by threading the first screw 5685 on the top of the outer wall of one side of the manual connecting plate 568 away from the threaded groove provided on the side wall of the fixed block 56831 that matches the first screw 5685, it is convenient to disassemble and clean the laser photoacoustic lens 5683.

[0035] Embodiment: At the beginning of work, the operator manually places the high-precision laser photoacoustic detector body 1 on the outer side wall of the top of the bottom clamping plate 2, and manually slides and adjusts the top clamping plate 3 in the inner cavity at the top of one side of the bottom clamping plate 2, so that the outer wall of the bottom of the top clamping plate 3 abuts against the top of the high-precision laser photoacoustic detector body 1 for clamping. By manually rotating the outer wall of one side of the top clamping plate 3, a second screw rod 31 with a matching thread is connected to abut against the outer wall of the slider 4 for fixing. Then, the inclined cover 5682 in the laser photoacoustic multi-angle adjustment component 5 covers the circular surface laser lens at the front of the high-precision laser photoacoustic detector body 1. When the laser photoacoustic angle needs to be adjusted, through the image recognition algorithm built into the camera 56841 provided on the inner side wall of the mounting sleeve 5684, the lens can automatically identify and track specific object detection samples at different position information. By transmitting an electrical signal to the plc controller, the plc control controller receives the electrical signal and transmits a trigger to the first motor 53 and the second motor 562 to rotate. When the plc controller triggers the execution end of the first motor 53, one end is provided with a worm 52, and the bottom end of the worm 52 is rotatably connected to the bottom side wall of the support shell frame plate 51 for supporting rotation. The rotation of the worm 52 drives the rotation of a worm gear 54 engaged on one side. The rotation of the worm gear 54 drives a round rod 55 embedded in the middle position, and one end is rotatably connected to the side wall of one side of the support shell frame plate 51 and the other end is rotatably connected to the outer side wall of the support shell frame plate 51 for supporting rotation. The rotation of the round rod 55 drives the other end to be provided with a lateral adjustment member 56, which is rotatably connected to the outer side wall of the other side of the bottom clamping plate 2 through the rotation bearing member 569 on the outer side wall for supporting rotation and longitudinal angle adjustment. The worm 52 and the worm gear 54 themselves have self-locking properties to avoid loosening and displacement; When the horizontal angle is adjusted, the PLC controller triggers the execution end of the second motor 562 to drive the outer wall embedded with the first gear 563 to rotate at one end of the execution end, which is rotatably connected to the middle position of the support plate 561 and the side wall of the partition plate for supporting rotation. The rotation of the first gear 563 drives the second gear 564 meshed at the bottom of one side to rotate. The rotation of the second gear 564 drives the screw rod 565 embedded in the middle to rotate at one end, which is rotatably connected to the side wall of the partition plate at the middle position of the support plate 561 and the other end, which is rotatably connected to the side wall of the other side of the support plate 561 for supporting rotation. The rotation of the screw rod 565 drives the outer wall threadedly connected with a matching moving block 566, and both outer side walls of the moving block 566 are hinged with two groups of square connecting rods 567 with the same structure to perform linear movement supported by the outer side wall of the execution end of the support round rod 5611. The linear movement of the square connecting rod 567 will also drive the connecting plates 568 provided thereon to tilt to one side. Since one end of the two groups of square connecting rods 567 is hinged to the moving block 566 and the other end is fixedly arranged on the connecting plate 568, and the other side of the connecting plate 568 is hinged with a rotating bearing member 569 and rotates through the rotating bearing member 569 at the same time, the linear movement of one end of the moving block 566 drives one end of the connecting plate 568 to adjust the tilt angle, and the linear movement to the other end drives the other end of the connecting plate 568 to adjust the tilt angle as described above, facilitating the adjustment of the horizontal angle. After the above-mentioned vertical and horizontal adjustments, when the high-precision laser photoacoustic detector body 1 emits laser photoacoustic waves, the laser photoacoustic waves will be reflected by the inclined cover 5682 including the reflecting lens 56821 provided on the outer side wall to the focusing lens 5681 for convergence. Since the focusing lens 5681 can highly concentrate the energy of the reflected laser beam, improve the photoacoustic conversion efficiency, and enhance the photoacoustic signal to be transmitted to the laser photoacoustic lens 5683 and emitted. The laser photoacoustic lens 5683 includes an antireflection film 56832 provided on the outer side wall, which effectively improves the transmittance of the laser photoacoustic detection lens to the laser of a specific wavelength, reduces the loss of light energy, and improves the detection sensitivity. By coating multiple antireflection films 56832 on the surface of the laser photoacoustic lens 5683, the reflected light cancels each other out, thereby increasing the light transmittance and facilitating the reflected convergence detection after the angle adjustment; Through the above operations, it is convenient to automatically adjust the laser photoacoustic waves at multiple angles, avoid the uncertainty of the position of the detection target during the detection process, flexibly detect different positions of the detection target, and do not require additional manual adjustment by the operator. Moreover, it avoids the influence of manual adjustment and alignment on the detection accuracy, improves the detection efficiency and detection accuracy of the laser photoacoustic detection. And by threading the first screw 5685 on the top of the outer wall of one side of the manual connecting plate 568 away from the threaded groove provided on the side wall of the fixed block 56831 that matches the first screw 5685, it is convenient to disassemble and clean the laser photoacoustic lens 5683.

[0036] It should be understood that, during the development of any actual implementation, such as in any engineering or design project, numerous specific implementation decisions can be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, the development efforts will be routine work in design, manufacture, and production.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A high-precision laser photoacoustic detection device, characterized in that: It comprises a high-precision laser photoacoustic detector body (1), a bottom clamping plate (2), a top clamping plate (3), a slider (4) and a laser photoacoustic multi-angle adjustment component (5); A bottom outer wall of a high-precision laser photoacoustic detector body (1) is provided with a bottom clamping plate (2), a top inner cavity on one side of the bottom clamping plate (2) is slidably connected to a top clamping plate (3), a slider (4) is provided on an outer wall at one end of the bottom clamping plate (2), an outer wall execution end of the slider (4) is slidably connected to a side wall of one side of the top clamping plate (3), and a laser photoacoustic multi-angle adjustment component (5) is provided on the inner cavity of the outer wall on one side of the bottom clamping plate (2).

2. A high-precision laser photoacoustic detection device according to claim 1, characterized in that: The laser photoacoustic multi-angle adjustment component (5) comprises a support frame plate (51) arranged in the inner cavity of the outer wall of one side of the bottom clamping plate (2); a first motor (53) is installed on the top side wall of the support frame plate (51); one end of the execution end of the first motor (53) is rotatably connected to the side wall of the partition plate at the middle position of the support frame plate (51); and one end of the execution end of the first motor (53) is provided with a worm (52); one end of the bottom end of the worm (52) is rotatably connected to the support frame plate (51). ) bottom side wall, and a worm wheel (54) is meshed on one side of the worm (52), a round rod (55) is embedded in the middle of the worm wheel (54), one end of the round rod (55) is rotatably connected to a side wall of a supporting frame plate (51), and the other end of the round rod (55) is rotatably connected to an outer side wall of the supporting frame plate (51), and the other end of the round rod (55) extends to the outer side wall of the supporting frame plate (51), and the other end of the round rod (55) is provided with a lateral adjustment member (56).

3. A high-precision laser photoacoustic detection device according to claim 2, characterized in that: The lateral adjustment member (56) comprises a support plate (561) arranged at the other end of the round rod (55), a second motor (562) is installed on a side wall of one side of the support plate (561), one end of the execution end of the second motor (562) is rotatably connected to the side wall of the partition plate at the middle position of the support plate (561), and a first gear (563) is embedded in the outer side wall of the execution end of the second motor (562), a second gear (564) is meshed at the bottom of one side of the first gear (563), a screw rod (565) is embedded in the middle of the second gear (564), and one end of the screw rod (565) is rotatably connected to the support plate (5 61) The side wall of the partition is spaced in the middle position, and the other end of the screw rod (565) is rotatably connected to the side wall of the other side of the support plate (561), and the outer side wall of the screw rod (565) is threadedly connected to a matching moving block (566), and the outer side walls on both sides of the moving block (566) are hinged with two groups of square connecting rods (567) of the same structure, and the two groups of square connecting rods (567) are provided with connecting plates (568), and the other side of the connecting plate (568) is hinged with a rotating bearing member (569), and the outer side wall of the other side of the rotating bearing member (569) is rotatably connected to the outer side wall of the other side of the bottom clamp (2).

4. A high-precision laser photoacoustic detection device according to claim 3, characterized in that: The connecting plate (568) comprises a focusing lens sheet (5681) embedded in the middle position, a laser photoacoustic lens (5683) is arranged on the outer wall of one side of the focusing lens sheet (5681), and an oblique cover (5682) is arranged on the outer wall of the other side of the focusing lens sheet (5681), and a mounting sleeve (5684) is arranged on the outer wall of one side of the top of the connecting plate (568), and a first screw rod (5685) is threadedly connected to the top of the outer wall of one side of the connecting plate (568).

5. A high-precision laser photoacoustic detection device according to claim 4, characterized in that: The mounting sleeve (5684) includes an inner wall on which a camera (56841) is disposed.

6. A high-precision laser photoacoustic detection device according to claim 4, characterized in that: The laser photoacoustic lens (5683) comprises an outer wall provided with an anti-reflection film (56832), and a fixing block (56831) is provided on one side of the laser photoacoustic lens (5683), and a thread groove matching the first screw rod (5685) is provided on the side wall of the fixing block (56831).

7. A high-precision laser photoacoustic detection device according to claim 3, characterized in that: The support plate (561) comprises a supporting round rod (5611) disposed on a side wall adjacent to one side of the screw rod (565); the other end of the supporting round rod (5611) is disposed on the other outer side wall of the support plate (561); and the outer side wall of the execution end of the supporting round rod (5611) is slidably connected to the side wall of one side of the moving block (566).

8. A high-precision laser photoacoustic detection device according to claim 4, characterized in that: The oblique cover (5682) includes a reflective lens (56821) disposed on the outer side wall.

9. A high-precision laser photoacoustic detection device according to claim 1, characterized in that: A matching second screw rod (31) is threadedly connected to an outer wall of one side of the top clamping plate (3), and one end of the second screw rod (31) extends to the outer wall of the sliding block (4).

10. A detection method according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: The operator manually places the high-precision laser photoacoustic detector body (1) on the top outer wall of the bottom clamp (2), manually slides the top clamp (3) in the top inner cavity of one side of the bottom clamp (2) to make the bottom outer wall of the top clamp (3) abut against the top of the high-precision laser photoacoustic detector body (1) for clamping, manually rotates the outer wall of one side of the top clamp (3) threadedly connected with a matching second screw (31) to abut against the outer wall of the slider (4) for fixing, and then makes the oblique cover (5682) in the laser photoacoustic multi-angle adjustment component (5) cover the circular laser lens at the front of the high-precision laser photoacoustic detector body (1). When the laser photoacoustic angle needs to be adjusted, the camera (56841) is provided on the inner wall of the mounting sleeve (5684). The existing technology has a built-in image recognition algorithm, and the lens can automatically identify and track specific objects to detect different position information of the sample, and transmit electrical signals to the PLC controller. The PLC controller receives the electrical signal and transmits a trigger to the first motor (53) and the second motor (562) to rotate. When the PLC controller triggers the execution end of the first motor (53), a worm (52) is provided at one end, and the worm (52) is rotated at one end of the bottom to be connected to the bottom side wall of the support frame plate (51) for supporting rotation. The rotation of the worm (52) drives the worm wheel (54) engaged at one side to rotate. The rotation of the worm wheel (54) drives a round rod (55) embedded in the middle position to be rotated at one end to be connected to the side wall of one side of the support frame plate (51) and the other end to be connected to the outer side wall of the support frame plate (51) for supporting rotation. The rotation of the round rod (55) drives the lateral adjustment member (56) provided at the other end to be rotated to be connected to the outer side wall of the other side of the bottom clamping plate (2) through the rotation of the bearing member (569) to adjust the longitudinal angle of the supporting rotation. The worm (52) and the worm wheel (54) themselves have self-locking properties to avoid loose displacement. Step 2: When the lateral angle is adjusted, the PLC controller is used to trigger the second motor (562) to drive the outer wall to be embedded with a first gear (563) at one end of the execution end to rotate and connect to the side wall of the partition at the middle position of the support plate (561) for support rotation. The rotation of the first gear (563) drives the second gear (564) meshed with the bottom of one side to rotate. The rotation of the second gear (564) drives the screw rod (565) embedded in the middle to rotate and connect to the side wall of the partition at the middle position of the support plate (561) at one end and rotate and connect to the other side wall of the support plate (561) at the other end for support rotation. The screw rod (565) The rotation of the outer wall of the movable block (565) drives the outer wall to be threadedly connected with a matching moving block (566) and the outer walls of the moving block (566) on both sides are hinged with two sets of square connecting rods (567) of the same structure. The outer wall of the supporting end is supported by the linear movement of the supporting round rod (5611). The linear movement of the square connecting rod (567) will also drive the connecting plate (568) to tilt to one side. Because one end of the two sets of square connecting rods (567) is hinged to the moving block (566), and the other end is fixedly set on the connecting plate (568), and the other side of the connecting plate (568) is hinged with a rotating bearing (569). When the bearing member (569) is rotated, the linear movement of one end of the moving block (566) drives one end of the connecting plate (568) to adjust the tilt angle, and the linear movement to the other end drives the other end of the connecting plate (568) to adjust the tilt angle, so as to facilitate the lateral angle adjustment. After the longitudinal and lateral adjustments, when the high-precision laser photoacoustic detector body (1) emits laser photoacoustic, the laser photoacoustic will be reflected to the focusing lens (5681) through the oblique cover (5682) including the reflective lens (56821) provided on the outer wall to reflect the laser photoacoustic of the horizontal axis. Converging, because the focusing lens (5681) can highly concentrate the energy of the reflected laser beam, improve the photoacoustic conversion efficiency, enhance the transmission of the photoacoustic signal to the laser photoacoustic lens (5683) for emission, the laser photoacoustic lens (5683) includes an outer wall provided with an anti-reflection film (56832) to effectively improve the transmittance of the laser photoacoustic detection lens to the laser of a specific wavelength, reduce the loss of light energy, and improve the detection sensitivity, because by coating the surface of the laser photoacoustic lens (5683) with multiple layers of anti-reflection film (56832), the reflected light cancels each other, thereby increasing the transmittance of the light, and facilitating the reflection convergence detection after angle adjustment; Step 3: Through the above operation, it is convenient to automatically adjust the multi-angle of the laser photoacoustic, avoid the uncertainty of the position of the detection target during the detection process, flexibly detect different positions of the target, and do not require additional manual adjustment by the operator, and avoid manual adjustment of the target to affect the detection accuracy, thereby improving the efficiency and detection accuracy of the laser photoacoustic detection. The first screw (5685) is threadedly connected to the top of the outer wall of one side of the manual connecting plate (568), and a thread groove matching the first screw (5685) is opened on the side wall of the fixed block (56831), which is convenient for disassembly and cleaning of the laser photoacoustic lens (5683).

Images