Adjusting device for laser deflection three-dimensional sound field tomography experiment tool

Abstract

The utility model relates to the field of laser deflection three-dimensional sound field tomography. The utility model relates to an adjusting device, in particular to an adjusting device for a laser deflection three-dimensional sound field tomography experiment tool. The utility model provides an adjusting device for a laser deflection three-dimensional sound field tomography experiment tool, which can adjust the relative positions of a laser, a transducer and a signal receiver so as to enlarge the detection range of the laser deflection three-dimensional sound field tomography experiment tool.

Description

Technical Field

[0001] This utility model relates to the field of laser deflection three-dimensional acoustic field tomography. More specifically, this utility model relates to an adjustment device for an experimental fixture used in laser deflection three-dimensional acoustic field tomography. Background Technology

[0002] Laser-deflected three-dimensional acoustic field tomography is based on the principle of light deflection in an acoustic field. Combined with tomographic imaging methods, it reconstructs the tomographic plane of the acoustic field under test. By combining surface scanning and rotational scanning, it simultaneously acquires images of the light spot on the projection plane. It comprehensively analyzes the morphological characteristics of the light spot (spot shape, length in each direction) and light intensity distribution information. During the integration process along the beam propagation direction, a weighting factor extracted from the light intensity distribution is added to enhance the weight of acousto-optic interaction on the tomographic plane in the detected information, thereby optimizing the spatial resolution of the measurement.

[0003] In laser deflection tomography (LDT) experiments, ultrasonic transducers are required to generate ultrasonic waves. For example, Chinese invention patent application number 2019111187724 discloses a detection device for a focused ultrasonic focal acoustic wave structure. The laser emitted by the laser can be directed into a water tank, passing through the transducer to generate a sound field center, and then through the water tank to be identified by a photoelectric detection circuit. The optical signal of the beam is then converted into an electrical signal. This scheme can be applied to laser deflection tomography experimental fixtures. However, in this scheme, the relative positions of the laser, transducer, and photoelectric detection circuit are fixed, the path of the beam in the detection device is fixed, and the size of the laser emitted by the laser is fixed. In actual use, it cannot be adjusted accordingly as needed, making it difficult to meet the requirements of laser deflection tomography experiments. Utility Model Content

[0004] The purpose of this invention is to provide an adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture, which can adjust the relative positions of the laser, transducer, and signal receiver to increase the detection range of the laser deflection three-dimensional acoustic field tomography experimental fixture.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture, comprising:

[0006] Two sets of position adjustment mechanisms are respectively set on both sides of the water tank in the X direction of the scanning experimental fixture, and are respectively connected to the laser and signal receiver of the scanning experimental fixture. The position adjustment mechanisms drive the laser and signal receiver to move up and down or move horizontally along the Y direction.

[0007] A height adjustment mechanism is installed on the water tank of the scanning experimental fixture and connected to the transducer of the scanning experimental fixture to drive the transducer to move up and down inside the water tank.

[0008] Furthermore, in the adjustment device for the laser deflection three-dimensional acoustic field tomography experimental fixture, the two sets of position adjustment mechanisms work synchronously to drive the laser and signal receiver to move synchronously. The position adjustment mechanism includes:

[0009] Lifting components;

[0010] A linear module, which is connected in a transmission manner to the lifting assembly;

[0011] A translation plate, the lower end of which is connected to the linear module via a transmission.

[0012] The mounting base is disposed on the translation plate and connected to the laser or signal receiver. The linear module drives the mounting base to move along the Y direction.

[0013] Furthermore, in the adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture, the lifting component includes:

[0014] Telescopic cylinder;

[0015] The lifting plate is horizontally positioned and its lower middle part is connected to the telescopic cylinder; the linear module is positioned at the upper end of the lifting plate.

[0016] Multiple positioning sleeves are vertically arranged and distributed axially around the telescopic cylinder. A positioning column is slidably provided coaxially inside the positioning sleeve, and the upper end of the positioning column is connected to the lifting plate.

[0017] Furthermore, the adjustment device for the laser deflection three-dimensional acoustic field tomography experimental fixture also includes:

[0018] A rotating mechanism is provided, through which the transducer is connected to the height adjustment mechanism, and the rotating mechanism drives the transducer to rotate in the vertical direction.

[0019] Furthermore, in the aforementioned adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture, the height adjustment mechanism includes:

[0020] An installation plate is disposed at the upper end of the water tank;

[0021] A lifting unit is mounted on the mounting plate;

[0022] The lifting seat is connected to the lifting unit via a transmission, and the rotating mechanism is connected to the lifting seat.

[0023] Furthermore, in the adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture, the rotating mechanism includes:

[0024] A rotating frustum, which is connected to the lifting base;

[0025] A centering unit is disposed below and connected to the rotating frustum, and the transducer is detachably connected to the centering unit.

[0026] Furthermore, in the adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture, the centering unit includes:

[0027] A connecting seat, the upper end of which is connected to the rotating frustum, and the lower end of which is provided with a sliding groove, and threaded holes are provided on the two opposite side walls of the sliding groove;

[0028] Two adjusting bolts are installed in the threaded holes respectively;

[0029] Two clamping components are slidably disposed in the groove, and their opposite ends are rotatably connected to the two adjusting bolts respectively. The adjacent ends of the two clamping components form a clamping position corresponding to the transducer.

[0030] Furthermore, in the adjustment device for the laser deflection three-dimensional acoustic field tomography experimental fixture, the middle of one end of the clamping member is recessed to form the clamping position.

[0031] Furthermore, in the adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture, the centering unit further includes:

[0032] A center scale is provided on the connecting seat along the sliding direction of the clamping member;

[0033] Two centering pointers are respectively set on the two clamping parts, and one end of each pointer extends upward to the outside of the centering scale.

[0034] The beneficial effects of this utility model are:

[0035] The adjustment device of this invention, applied to a laser deflection three-dimensional acoustic field tomography experimental fixture, can adjust the relative positions of the laser, transducer, and signal receiver to increase the detection range of the laser deflection three-dimensional acoustic field tomography experimental fixture.

[0036] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0037] Figure 1This is a schematic diagram of the structure of the adjusting device described in this utility model;

[0038] Figure 2 This is a schematic diagram of the position adjustment mechanism described in this utility model;

[0039] Figure 3 This is a schematic diagram showing the connection between the position adjustment mechanism and the laser described in this utility model;

[0040] Figure 4 This is a schematic diagram of the height adjustment mechanism described in this utility model;

[0041] Figure 5 This is a bottom view of the height adjustment mechanism described in this utility model.

[0042] The reference numerals in the attached figures are as follows:

[0043] Laser 1; Water tank 2; Signal receiver 3; Transducer 4; Position adjustment mechanism 5; Linear module 501; Translation plate 502; Mounting base 503; Telescopic cylinder 504; Lifting plate 505; Positioning sleeve 506; Positioning column 507; Height adjustment mechanism 6; Mounting plate 601; Lifting unit 602; Lifting seat 603; Rotating frustum 604; Connecting seat 605; Adjusting bolt 606; Clamping component 607; Centering scale 608; Centering pointer 609. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0045] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0046] Figures 1-3 An adjustment device for a laser-deflected three-dimensional acoustic field tomography experimental fixture provided in this embodiment of the present invention includes:

[0047] Two sets of position adjustment mechanisms 5 are respectively set on both sides of the water tank 2X of the scanning experimental fixture, and are respectively connected to the laser 1 and signal receiver 3 of the scanning experimental fixture. The position adjustment mechanisms 5 respectively drive the laser 1 and signal receiver 3 to move up and down or move horizontally along the Y direction.

[0048] A height adjustment mechanism is installed on the water tank 2 of the scanning experimental fixture and connected to the transducer 4 of the scanning experimental fixture to drive the transducer 4 to move up and down inside the water tank 2.

[0049] In this embodiment, the laser deflection three-dimensional acoustic field tomography experimental fixture generally includes a laser 1, a water tank 2, a transducer 4, and a signal receiver 3. In this embodiment, the laser 1, water tank 2, and signal receiver 3 are arranged sequentially along the X-axis. The transducer 4 is placed inside the water tank 2. Two sets of position adjustment mechanisms 5 are respectively connected to the laser 1 and the signal receiver 3 of the scanning experimental fixture. The height of the transducer 4 can be adjusted by the height adjustment mechanism 6, extending into the water tank 2 to generate a sound field. When the laser deflection three-dimensional acoustic field tomography experimental fixture is working, the laser 1 emits a laser beam that enters the water tank 2. After passing through the center of the sound field generated by the transducer 4, the laser beam passes through the water tank 2 and is recognized by the signal receiver 3, converting the optical signal of the beam into an electrical signal. This electrical signal can then be transmitted to a designated data processor for further processing. During this process, the position adjustment mechanism 5 drives the lens group of the laser 1 to move up and down or horizontally along the Y-axis, allowing the laser beam emitted by the laser 1 to move throughout the entire sound field range, thereby increasing the detection range. The two sets of position adjustment mechanisms 5 work synchronously, driving the laser 1 and the signal receiver 3 to move respectively, and always keeping them coaxial in the X direction.

[0050] Preferably, in another embodiment of this utility model, the two sets of position adjustment mechanisms 5 operate synchronously to drive the laser 1 and the signal receiver 3 to move synchronously. The position adjustment mechanism 5 includes:

[0051] Lifting components;

[0052] Linear module 501 is connected to the lifting assembly via a transmission connection;

[0053] The translation plate 502 has its lower end connected to the linear module 501 in a transmission manner;

[0054] Mounting base 503 is disposed on the translation plate 502 and connected to the laser 1 or signal receiver 3. The linear module 501 drives the mounting base 503 to move along the Y direction.

[0055] In this embodiment, the laser 1 or signal receiver 3 is fixed on the laser 1 mounting base 503. The lifting component drives the linear module 501 to move in the vertical direction. The linear module 501 drives the translation plate 502 to move along the Y direction. The laser 1 mounting base 503 moves with the translation plate 502, which can realize the adjustment of the position of the laser 1 or signal receiver 3.

[0056] Preferably, in another embodiment of the present invention, the lifting assembly includes:

[0057] Lifting unit 602, telescopic cylinder 504;

[0058] The lifting plate 505 is horizontally arranged, and its lower middle part is connected to the telescopic cylinder 504 of the lifting unit 602. The linear module 501 is arranged on the upper end of the lifting plate 505.

[0059] Multiple positioning sleeves 506 are vertically arranged and distributed axially around the telescopic cylinder 504 of the lifting unit 602. Positioning columns 507 are slidably arranged coaxially inside the positioning sleeves 506, and the upper end of the positioning columns 507 is connected to the lifting plate 505.

[0060] In this embodiment, the lifting plate 505 is driven to move up and down by the telescopic cylinder 504 of the lifting unit 602. During the movement, multiple positioning columns 507 move vertically in the corresponding positioning sleeves 506 to limit the movement trajectory of the lifting plate 505 and ensure that the lifting plate 505 moves up and down stably.

[0061] Preferably, as another embodiment of the present invention, it further includes:

[0062] A rotating mechanism is provided, through which the transducer 4 is connected to the height adjustment mechanism 6, and the rotating mechanism drives the transducer 4 to rotate in the vertical direction.

[0063] In this embodiment, the transducer 4 is rotated inside the water tank 2 by a rotating mechanism, thereby adjusting the angle of the transducer 4.

[0064] Preferably, in another embodiment of the present invention, the height adjustment mechanism 6 includes:

[0065] Mounting plate 601 is disposed on the upper end of the water tank 2;

[0066] A lifting unit 602 is mounted on the mounting plate 601;

[0067] The lifting seat 603 is connected to the lifting unit 602 via a transmission connection, and the rotating mechanism is connected to the lifting seat 603.

[0068] Preferably, in another embodiment of the present invention, the rotating mechanism includes:

[0069] A rotating frustum 604 is connected to the lifting seat 603;

[0070] A centering unit is disposed below and connected to the rotating frustum 604, and the transducer 4 is detachably connected to the centering unit.

[0071] In this embodiment, the transducer 4 is fixed on the centering unit, making the transducer 4 coaxial with the rotating frustum 604, which can drive the transducer 4 to rotate. The lifting unit 602 is fixed to the upper end of the water tank 2 by the mounting plate 601, and then drives the lifting seat 603 to move up and down. The lifting seat 603 drives the rotating frustum 604 and the centering unit to rise and fall synchronously.

[0072] Preferably, as another embodiment of this utility model, such as Figures 4-5 As shown, the centering unit includes:

[0073] The connecting seat 605 is connected to the rotating frustum 604 at its upper end and has a sliding groove at its lower end. Threaded holes are provided on the two opposite side walls of the sliding groove.

[0074] Two adjusting bolts 606 are respectively installed in the threaded holes;

[0075] Two clamping members 607 are slidably disposed in the slide groove, and their opposite ends are respectively rotatably connected to the two adjusting bolts 606. The adjacent ends of the two clamping members 607 form a clamping position corresponding to the transducer 4.

[0076] In this embodiment, when the two clamping members 607 are in contact with each other, the space between them can form a clamping position corresponding to the transducer 4 for clamping and fixing the transducer 4. Each of the two clamping members 607 is connected to an adjusting nut, and the adjusting nut can be rotated to drive the clamping member 607 to move in the slide groove, so that the positions of the two clamping members 607 can be adjusted separately.

[0077] Furthermore, in the adjustment device for the laser deflection three-dimensional acoustic field tomography experimental fixture, the middle of one end of the clamping member 607 is recessed to form the clamping position.

[0078] In this embodiment, such as Figure 5 As shown, a V-shaped recess is formed in the middle of one end of the clamping member 607 to form a clamping position. The transducer 4 extends into the two V-shaped recesses, which can stably clamp the transducer 4 with the two clamping members 607.

[0079] Preferably, as another embodiment of this utility model, such as Figures 4-5 As shown, the centering unit further includes:

[0080] A center scale 608 is disposed on the connecting seat 605 along the sliding direction of the clamping member 607;

[0081] Two centering pointers 609 are respectively mounted on the two clamping parts 607, and one end of each pointer extends upward to the outside of the centering scale 608.

[0082] In this embodiment, when the clamping member 607 moves in the slide groove, it drives the centering pointer 609 to move synchronously. At this time, the centering pointer 609 points to different scales on the centering scale 608, which makes it easier to control the position of the two clamping members 607 and keep them symmetrical along the rotation axis of the rotating frustum 604.

[0083] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and embodiments shown and described herein.

Claims

1. An adjustment device for a laser-deflected three-dimensional acoustic field tomography experimental fixture, characterized in that, include: Two sets of position adjustment mechanisms are respectively set on both sides of the water tank in the X direction of the scanning experimental fixture, and are respectively connected to the laser and signal receiver of the scanning experimental fixture. The position adjustment mechanisms drive the laser and signal receiver to move up and down or move horizontally along the Y direction. A height adjustment mechanism is installed on the water tank of the scanning experimental fixture and connected to the transducer of the scanning experimental fixture to drive the transducer to move up and down inside the water tank.

2. The adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture as described in claim 1, characterized in that, The two sets of position adjustment mechanisms operate synchronously to drive the laser and signal receiver to move synchronously. Each position adjustment mechanism includes: Lifting components; A linear module, which is connected in a transmission manner to the lifting assembly; A translation plate, the lower end of which is connected to the linear module via a transmission. The mounting base is disposed on the translation plate and connected to the laser or signal receiver. The linear module drives the mounting base to move along the Y direction.

3. The adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture as described in claim 2, characterized in that, The lifting assembly includes: Telescopic cylinder; The lifting plate is horizontally positioned and its lower middle part is connected to the telescopic cylinder; the linear module is positioned at the upper end of the lifting plate. Multiple positioning sleeves are vertically arranged and distributed axially around the telescopic cylinder. A positioning column is slidably provided coaxially inside the positioning sleeve, and the upper end of the positioning column is connected to the lifting plate.

4. The adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture as described in claim 1, characterized in that, Also includes: A rotating mechanism is provided, through which the transducer is connected to the height adjustment mechanism, and the rotating mechanism drives the transducer to rotate in the vertical direction.

5. The adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture as described in claim 4, characterized in that, The height adjustment mechanism includes: An installation plate is disposed at the upper end of the water tank; A lifting unit is mounted on the mounting plate; The lifting seat is connected to the lifting unit via a transmission, and the rotating mechanism is connected to the lifting seat.

6. The adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture as described in claim 5, characterized in that, The rotating mechanism includes: A rotating frustum, which is connected to the lifting base; A centering unit is disposed below and connected to the rotating frustum, and the transducer is detachably connected to the centering unit.

7. The adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture as described in claim 6, characterized in that, The centering unit includes: A connecting seat, the upper end of which is connected to the rotating frustum, and the lower end of which is provided with a sliding groove, and threaded holes are provided on the two opposite side walls of the sliding groove; Two adjusting bolts are installed in the threaded holes respectively; Two clamping components are slidably disposed in the groove, and their opposite ends are rotatably connected to the two adjusting bolts respectively. The adjacent ends of the two clamping components form a clamping position corresponding to the transducer.

8. The adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture as described in claim 7, characterized in that, The clamping member has a recessed center at one end to form the clamping position.

9. The adjustment device for a laser deflection three-dimensional acoustic field tomography experimental fixture as described in claim 7, characterized in that, The centering unit further includes: A center scale is provided on the connecting seat along the sliding direction of the clamping member; Two centering pointers are respectively set on the two clamping parts, and one end of each pointer extends upward to the outside of the centering scale.

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