Ultrasonic transducer pressure field measuring device

Abstract

The utility model relates to an ultrasonic transducer pressure field measuring device which comprises a main body frame, a water tank, a transducer position limiter, a hydrophone fixing frame, an L-shaped hydrophone support, a multi-axis moving unit, horizontal adjusting trundles and universal supporting feet. The main body frame is of a multi-layer structure, and the horizontal adjusting trundles are located at the bottom of the main body frame; the water tank is arranged in the middle of the main frame, the multi-axis moving unit is arranged at the top of the main frame, an L-shaped hydrophone support fixed to the Z axis of the multi-axis moving unit extends into the water tank to move, the transducer position limiter is installed in a limiting groove in the bottom of the water tank, and the bottom of the transducer position limiter is attached to the bottom wall of the water tank. The hydrophone fixing frame is arranged on an L-shaped hydrophone support of the Z axis of the multi-axis moving unit, the hydrophone is installed in the hydrophone fixing frame, and the hydrophone is adjusted to correspond to the ultrasonic transducer to receive sound pressure signals of the ultrasonic transducer.

Description

Ultrasonic transducer pressure field measurement device Technical Field

[0001] This application relates to the field of ultrasonic transducer performance testing technology, and in particular to an ultrasonic transducer pressure field measuring device. Background Technology

[0002] In acoustic research and applications, accurately measuring the sound pressure field distribution in liquids is crucial for understanding the propagation characteristics of sound waves and optimizing the performance of acoustic equipment. Traditional pressure field measurement devices often neglect the parallelism between the transducer's acoustic axis and the hydrophone's central axis, leading to measurement deviations. Furthermore, the measurement process is cumbersome when replacing ultrasonic transducers with the same or similar specifications, and the computational load for sound pressure field plotting is substantial. Summary of the Invention

[0003] In view of this, this application proposes an ultrasonic transducer pressure field measuring device, which facilitates the adjustment of the parallelism between the transducer acoustic axis and the hydrophone central axis.

[0004] According to one aspect of this application, an ultrasonic transducer pressure field measuring device is provided, comprising: a main frame, a water tank, a transducer position limiter, a hydrophone mounting bracket, an L-shaped hydrophone support, a multi-axis moving unit, horizontal adjusting casters, and omnidirectional feet.

[0005] The main frame has a multi-layer structure;

[0006] The horizontally adjustable casters are located at the bottom of the main frame. Adjusting the height of the horizontally adjustable casters makes the Z-axis of the multi-axis moving unit perpendicular to the ground.

[0007] The water tank is located in the middle of the main frame and is filled with liquid water.

[0008] The multi-axis moving unit is located on the top of the main frame, and the L-shaped hydrophone bracket mounted on the Z-axis of the multi-axis moving unit extends into the interior of the water tank and moves.

[0009] The transducer position limiter is installed in the limiting groove at the bottom of the water tank, with its bottom attached to the bottom wall of the water tank, and the transducer is installed in the transducer position limiter.

[0010] The hydrophone mounting bracket is set on the L-shaped hydrophone bracket of the Z-axis of the multi-axis moving unit. The hydrophone is installed in the hydrophone mounting bracket. The position of the hydrophone corresponding to the ultrasonic transducer is adjusted to receive the sound pressure signal of the ultrasonic transducer.

[0011] The universal feet are mounted on the main frame and located at the bottom of the water tank. Multiple universal feet abut against the bottom of the water tank. The universal feet are adjusted so that the acoustic axis of the transducer is approximately perpendicular to the ground.

[0012] In one possible implementation, there are four omnidirectional feet, each positioned below a corner of the water tank.

[0013] One possible implementation also includes: a mounting plate;

[0014] The mounting plate is set on the main frame, located below the water tank, and the mounting plate is spaced at a predetermined distance from the bottom of the water tank;

[0015] The universal feet are mounted on the mounting plate and support the bottom of the water tank.

[0016] In one possible implementation, the universal joint includes a joint shaft and a joint plate;

[0017] The support shaft has a cylindrical structure with a ball head at the top and external threads on the cylindrical surface.

[0018] The support plate has a boss structure, and a mounting ball groove matching the ball head is opened on the side with a smaller cross section. The mounting ball groove is located on the rotation axis of the support plate.

[0019] The support plate is fitted onto the ball head at the top of the support shaft through the ball groove, and the bottom of the support shaft is bolted to the mounting plate.

[0020] In one possible implementation, the side of the support plate with a larger cross-section is covered with rubber.

[0021] One possible implementation also includes a fixing nut;

[0022] The fixing nut is matched with the external thread of the support shaft;

[0023] The fixing nut is disposed between the mounting plate and the water tank, and is sleeved on the support shaft to fasten the mounting plate and the universal support.

[0024] In one possible implementation, the bottom of the main frame is provided with the horizontally adjustable casters.

[0025] The mounting plate is provided with a fixing ear at its edge. The fixing ear is a plate-shaped structure that is perpendicular to the surface of the mounting plate, and a fixing hole is provided on the fixing ear.

[0026] The fixing hole is an elongated hole, which is opened in a direction perpendicular to the mounting plate;

[0027] The mounting plate is bolted to the main frame via the fixing lugs.

[0028] In one possible implementation, the main frame is a hollow cuboid structure.

[0029] The beneficial effects of the ultrasonic transducer pressure field measuring device in this application embodiment are as follows: By setting universal feet and adjusting the height of the horizontal adjustable casters, it can be ensured that the acoustic axis of the transducer sound pressure field is approximately perpendicular to the central axis of the hydrophone, and remains approximately parallel throughout the measurement process. When the transducer position limiter is installed in the limiting groove at the bottom of the water tank, the acoustic axis coordinates of the transducer sound field can be relatively fixed relative to the coordinate system of the multi-axis moving unit, simplifying the preparatory operation steps for sound field measurement when replacing the transducer. This precise adjustment function, ensuring the parallelism between the transducer's acoustic axis and the hydrophone's central axis, helps reduce measurement errors, improves the measurement accuracy of the sound pressure field distribution, and reduces the computational load of the sound pressure field plotting program. Specifically, the use of universal feet allows for flexible adjustment of the water tank height and the verticality of the transducer's acoustic axis. By rotating the external thread and fixing nut at the bottom of the foot shaft, the verticality of the transducer's acoustic axis can be easily adjusted, thereby improving the accuracy of the test results.

[0030] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0031] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0032] Figure 1 shows a schematic diagram of the main structure of a pressure field measuring device with a transducer leveling device according to an embodiment of this application. Detailed Implementation

[0033] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0034] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" 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 or 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.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0037] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0038] As shown in Figure 1, the ultrasonic transducer pressure field measuring device of this embodiment includes: a main frame 100, a water tank, a transducer position limiter 200, a hydrophone mounting bracket, an L-shaped hydrophone support, a multi-axis moving unit 300, horizontal adjusting casters, and universal feet 500. The main frame 100 has a multi-layer structure. The water tank is located in the middle of the main frame 100 and is filled with liquid water. The multi-axis moving unit is located at the top of the main frame 100, and the L-shaped hydrophone support, fixed to the Z-axis of the multi-axis moving unit 300, extends into the water tank and moves. The position limiter 200 is installed in the limiting groove at the bottom of the water tank, with its bottom attached to and parallel to the bottom wall of the water tank. The hydrophone is set on an L-shaped hydrophone bracket fixed on the Z-axis of the multi-axis moving unit 300. The position of the hydrophone is adjusted to correspond with the ultrasonic transducer installed on the transducer position limiter 200, and the sound pressure signal of the ultrasonic transducer is received. The universal feet 500 are set on the main frame 100, located at the bottom of the water tank, and multiple universal feet 500 abut against the bottom of the water tank. The acoustic axis of the ultrasonic transducer installed on the transducer position limiter 200 is adjusted to be perpendicular to the ground.

[0039] In this embodiment, by setting up the universal support 500 and adjusting its height, the acoustic axis of the ultrasonic transducer mounted on the transducer position limiter 200 can be made perpendicular to the ground. This precise adjustment function, ensuring the parallelism between the acoustic axis of the transducer and the central axis of the hydrophone, helps reduce measurement errors, improves the measurement accuracy of the sound pressure field distribution, and reduces the computational load of the sound pressure field plotting program. Specifically, the use of the universal support 500 allows for flexible adjustment of the height and level of the water tank. By rotating the external thread and fixing nut at the bottom of the support shaft, it is easy to adjust so that the acoustic axis of the sound pressure field is always approximately parallel to the central axis of the hydrophone fixed on the Z-axis of the multi-axis moving unit 300, thereby improving the accuracy of the test results.

[0040] In one specific embodiment, the bottom of the main frame 100 is equipped with horizontally adjustable casters, facilitating the movement and adjustment of the entire device and ensuring that the central axis of the hydrophone mounted on the Z-axis of the multi-axis moving unit 300 is perpendicular to the ground at the adjustment location of the pressure field measuring device. Specifically, the horizontally adjustable casters allow for easy movement and adjustment of the entire device, ensuring that the central axis of the hydrophone mounted on the Z-axis of the multi-axis moving unit 300 is perpendicular to the ground at the adjustment location of the pressure field measuring device. When it is necessary to move the measurement position or change the site, the device can be easily pushed to the designated location.

[0041] In one specific embodiment, there are four universal feet 500, which are respectively set below the corners of the water tank to provide balanced and stable support.

[0042] In one specific embodiment, the system further includes: a mounting plate, which is disposed on the main frame 100, located below the water tank, and spaced at a predetermined distance from the bottom of the water tank; and universal feet 500 are disposed on the mounting plate to support the bottom of the water tank, facilitating adjustment and maintenance. The mounting plate is a plate-like structure, disposed below the water tank, and supports the water tank using the universal feet 500. The mounting plate is designed to provide a mounting position for the universal feet 500 and to provide balanced and stable support for the water tank.

[0043] In one specific embodiment, the universal foot 500 includes a foot shaft and a foot plate. The foot shaft is a columnar structure with a ball head structure at the top and external threads on the cylindrical surface. The foot plate is a boss structure with a ball head groove matching the ball head on the side with a smaller cross-section and a flush side on the side with a larger cross-section. The foot plate is fitted onto the top of the foot shaft through the ball head groove, and the bottom of the foot shaft is bolted to the mounting plate. The support shaft is a columnar structure with a ball head at the top and external threads on the cylindrical surface for easy rotation. By adjusting the water tank level, the acoustic axis of the ultrasonic transducer installed on the transducer position limiter 200 is further adjusted to be perpendicular to the ground. The support plate is a boss structure with a ball head groove matching the ball head on the side with a smaller cross-section, and the side with a larger cross-section is flush with the bottom wall of the water tank to support the water tank. This ensures that even if there is a certain error in the assembly of the main frame 100, the bottom wall of the water tank and the universal support will always maintain surface contact. After the overall adjustment is completed, the water tank is tightened and pressed from all sides to ensure that after the measurement platform moves, the acoustic axis of the sound pressure field is always approximately parallel to the central axis of the hydrophone fixed on the Z-axis of the multi-axis moving unit 300.

[0044] Furthermore, in this specific embodiment, the side with the larger cross-section of the support plate is covered with rubber to increase the friction with the bottom wall of the water tank, preventing the water tank from sliding during the movement of the measuring device and ensuring the accuracy and safety of the measurement.

[0045] In one specific embodiment, a fixing nut is also included. The fixing nut matches the external thread of the support shaft. The fixing nut is disposed between the mounting plate and the water tank, and is sleeved on the support shaft to fasten the mounting plate and the universal support 500, thereby ensuring the stability after adjustment.

[0046] In one specific embodiment, it also includes an adjusting screw. The mounting plate has a fixing ear at its edge. The fixing ear is a plate-shaped structure that is perpendicular to the surface of the mounting plate. The fixing ear has a fixing hole, which is an elongated hole that is opened in the direction perpendicular to the mounting plate. The mounting plate is bolted to the main frame 100 through the fixing ear and bolted to the main frame 100 through the adjusting screw passing through the fixing hole.

[0047] In one specific embodiment, the main frame 100 is a hollow cuboid structure, which ensures sufficient strength while reducing the overall weight, making it easier to move, operate, and observe the device.

[0048] In one specific embodiment, it also includes an adjusting screw. The mounting plate has a fixing ear at its edge. The fixing ear is a plate-shaped structure that is perpendicular to the surface of the mounting plate. The fixing ear has a fixing hole, which is an elongated hole that is opened in the direction perpendicular to the mounting plate. The mounting plate is bolted to the main frame 100 through the fixing ear. The adjusting screw is bolted to the main frame 100 through the fixing hole for fixation.

[0049] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A pressure field measuring device for an ultrasonic transducer, characterized in that, include: The system comprises a main frame, a water tank, a transducer position limiter, a hydrophone mounting bracket, an L-shaped hydrophone support, a multi-axis moving unit, adjustable casters, and omnidirectional feet. The main frame has a multi-layered structure. The adjustable casters are located at the bottom of the main frame; adjusting their height allows the Z-axis of the multi-axis moving unit to be approximately perpendicular to the ground. The water tank is positioned in the middle of the main frame and filled with liquid water. The multi-axis moving unit is located at the top of the main frame, with its input end extending into the water tank for movement. The transducer position limiter is installed on... The bottom of the water tank is attached to the bottom wall of the water tank in the limiting groove, and the transducer is installed in the transducer position limiter; the hydrophone mounting bracket is suitable for being set on the L-shaped hydrophone bracket of the multi-axis moving unit Z-axis, and the hydrophone is installed in the hydrophone mounting bracket. The position of the hydrophone corresponding to the ultrasonic transducer is adjusted to receive the sound pressure signal of the ultrasonic transducer; the universal feet are set on the main frame, located at the bottom of the water tank, and multiple universal feet abut against the bottom of the water tank. The universal feet are adjusted so that the acoustic axis of the transducer is approximately perpendicular to the ground.

2. The ultrasonic transducer pressure field measuring device according to claim 1, characterized in that, There are four omnidirectional feet, which are respectively located below the corners of the water tank.

3. The ultrasonic transducer pressure field measuring device according to claim 2, characterized in that, Also includes: Mounting plate; the mounting plate is set on the main frame, located below the water tank, and the mounting plate is spaced at a preset distance from the bottom of the water tank; the universal support feet are set on the mounting plate to support the bottom of the water tank.

4. The ultrasonic transducer pressure field measuring device according to claim 3, characterized in that, The universal foot includes a foot shaft and a foot plate; the foot shaft is a columnar structure with a ball head at the top and external threads on the cylindrical surface; the foot plate is a boss structure with a mounting ball groove matching the ball head on the side with the smaller cross-section, and the mounting ball groove is located on the rotation shaft of the foot plate; the foot plate is fitted onto the ball head at the top of the foot shaft through the ball groove, and the bottom of the foot shaft is bolted to the mounting plate.

5. The ultrasonic transducer pressure field measuring device according to claim 4, characterized in that, The side of the support plate with a larger cross-section is covered with rubber.

6. The ultrasonic transducer pressure field measuring device according to claim 4, characterized in that, It also includes a fixing nut; the fixing nut matches the external thread of the support shaft; the fixing nut is disposed between the mounting plate and the water tank, sleeved on the support shaft, and fastens the mounting plate and the universal support.

7. The ultrasonic transducer pressure field measuring device according to claim 1, characterized in that, The bottom of the main frame is equipped with horizontally adjustable casters.

8. The ultrasonic transducer pressure field measuring device according to claim 3, characterized in that, It also includes adjusting screws; the mounting plate has a fixing lug at its edge, the fixing lug is a plate-shaped structure, perpendicular to the surface of the mounting plate, and the fixing lug has a fixing hole; the fixing hole is an elongated hole, opened in a direction perpendicular to the mounting plate; the mounting plate is bolted to the main frame through the fixing lug.

9. The ultrasonic transducer pressure field measuring device according to claim 1, characterized in that, The main frame is a hollow cuboid structure.

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