A transducer acoustic testing device that can be repositioned and automatically tested

Abstract

An acoustic testing device for transducer which can be repeatedly positioned and automatically tested, comprising a clamping structure and a three-axis testing mechanism which cooperate with each other, the clamping structure is composed of a test water tank, a transducer clamping mechanism, a target material assembly and a three-axis moving mechanism. The three-axis moving mechanism is fixed above the test water tank, the transducer clamping mechanism is loaded with an adaptive profiling clamp and installed thereon, the position of the transducer can be adjusted to ensure that the set array element is equidistant from the target material reflection surface; the three-axis testing mechanism is equipped with a probe which can test point by point according to a preset program. The profiling clamp cooperates with the target material positioning groove, the soft layer adapts to the deformation of the transducer, ensuring consistent clamping, simplifying the traditional 6-dimensional adjustment to X and Z fine adjustment, reducing the operation complexity and improving the efficiency; the program-controlled probe replaces manual operation, eliminates operation errors, accurately controls the contact time and improves the measurement accuracy; the moving target material mechanism and the three-axis testing mechanism are linked, the ball and the arc-shaped groove solve the problem of target material inclination, and the stability and repeatability of the test are ensured.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a transducer acoustic testing device that can be repeatedly positioned and automatically tested. Background Technology

[0002] In the field of medical imaging equipment, transducers (also known as probes) are the core components for achieving acoustic imaging, and their acoustic performance directly affects image quality. Transducers are typically composed of multiple array elements, which are the basic units for achieving electroacoustic conversion. Multiple array elements are arranged in a specific pattern to form an array for transmitting and receiving ultrasonic signals.

[0003] In a conventional transducer acoustic testing system, the transducer is clamped onto a triaxial mechanism in a test tank using a universal clamp, and the test target is placed inside the tank. Since there is no fixed positional relationship between the transducer and the target, each transducer requires adjustment in six dimensions during testing: axial movement along the X, Y, and Z axes, and radial oscillation. After adjustment, manual testing is required, contacting each element pin of the transducer's matching box connector sequentially. If the transducer lacks a matching target, the target must be rotated and oscillated around the transducer's test center. For each element angle oscillation, the operator must simultaneously test the corresponding pin of the matching box connector.

[0004] However, the aforementioned conventional testing systems have many shortcomings and problems in practical applications, as follows:

[0005] 1. The transducers have different shapes and are mostly arc-shaped structures. After clamping, they have a large degree of freedom in each direction, which results in the position and angle of the transducer relative to the target scanning plane being inconsistent after each clamping. This requires repeated adjustments in 6 dimensions, which is cumbersome and inefficient.

[0006] 2. The target material cannot be repeatedly fixed and installed in the water tank. The position of the transducer clamping triaxial mechanism needs to be readjusted for each test to adapt to the target material, which further increases the workload of adjustment.

[0007] 3. The pins of the matching box plug need to be manually touched and tested one by one in a specific order. This requires a high level of skill and accurate memory from the operator, and it is easy to miss elements or make mistakes in the order of testing.

[0008] 4. The original mobile target was suspended in the water tank, and due to gravity, it was tilted at an angle, which increased the difficulty of adjusting the transducer's orientation. During the test, the operator needed to rotate the target with his left hand, touch the pin with his right hand, and control the test with his foot. The operation required high coordination of multiple actions, which made the operation complex and prone to errors. Summary of the Invention

[0009] The purpose of this invention is to provide a transducer acoustic testing device that can be repeatedly positioned and automatically tested, suitable for transducer acoustic testing scenarios.

[0010] To achieve the above objectives, the present invention provides a transducer acoustic testing device capable of repeated positioning and automatic testing, comprising an interconnected clamping structure and a triaxial testing mechanism. The clamping structure includes a test water tank, a transducer clamping mechanism, a target assembly, and a triaxial moving mechanism.

[0011] The three-axis moving mechanism is fixed above the test water tank, the transducer clamping mechanism is installed on the three-axis moving mechanism and includes a contour clamp adapted to the shape of the transducer, and the three-axis moving mechanism adjusts the position of the transducer.

[0012] The target assembly is located inside the test water tank and is used to provide a reflective surface for the acoustic testing of the transducer;

[0013] The triaxial testing mechanism is equipped with a test probe, which can drive the test probe to test point by point according to a preset program;

[0014] The transducer is fixed on the contour jig. The three-axis moving mechanism adjusts the position of the transducer so that the distance between the array elements set by the transducer (i.e., the first array element, the middle array element, and the last array element) and the reflective surface of the target assembly is equal. The three-axis testing mechanism triggers the test probe to test each array element of the transducer.

[0015] Preferably, the transducer clamping mechanism further includes a transducer mounting base and a rotating shaft sleeve. The mounting base is fixedly connected to the rotating shaft sleeve, the rotating shaft sleeve is sleeved on the outside of the rotating shaft and fixed on the three-axis moving mechanism, and an XY angle adjuster is installed below the rotating shaft.

[0016] Preferably, the rotating shaft is provided with a through-groove, which engages with the flange inside the rotating shaft sleeve to achieve horizontal positioning. The rotating shaft is also provided with two different widths of grooves, which are adapted to the angle adjustment knob to achieve horizontal installation and locking and Z-axis rotation adjustment, respectively.

[0017] Preferably, the contact surface of the contour jig is a soft layer, which can be elastically deformed to adapt to the transducer housing and fix it to a centrally symmetrical position.

[0018] Preferably, the target assembly includes a fixed target mechanism and / or a movable target mechanism. Both the fixed target mechanism and the movable target mechanism are used to provide a reflective surface for the acoustic testing of the transducer, and both can be fixed in the test water tank and located below the transducer clamping mechanism by an adapter structure.

[0019] Preferably, the target fixing mechanism includes a reflective target and a target positioning mechanism, wherein the reflective target is fixed in the test water tank by the target positioning mechanism.

[0020] Preferably, the target positioning mechanism includes a detachable target support and a positioning groove disposed in the test water tank. One end of the detachable target support is inserted into the positioning groove, and the other end is connected to the reflective target and supports the reflective surface of the reflective target facing the contour clamp.

[0021] Preferably, the moving target mechanism includes a reflective target, a target fixing base, and a synchronous drive mechanism.

[0022] The reflective target is connected to the target mounting base, and the synchronous drive mechanism is fixedly connected to the test water tank and its output end is connected to the target mounting base.

[0023] When the triaxial test triggers the test probe to test each element of the transducer, the transducer is positioned above the reflective target, and the synchronous drive mechanism drives the reflective target to swing in order to cooperate with the test.

[0024] Preferably, the moving target mechanism further includes a linear motion module, the target fixing seat is connected to the linear motion module and can perform linear reciprocating motion along the linear motion module, and the synchronous drive mechanism drives the linear motion module to swing.

[0025] The reflective target is equipped with a ball bearing at its end, and the test tank has an arc-shaped groove corresponding to the ball bearing. The ball bearing is embedded in the arc-shaped groove to form a target guide and limit.

[0026] Preferably, the triaxial testing mechanism includes a triaxial testing platform, an oscilloscope, a pulse generator, and a display unit connected to each other. The triaxial testing platform is equipped with test probes for interface testing with the transducer. The pulse generator is used to output excitation pulse signals to the transducer to trigger the transducer to generate acoustic test signals. The oscilloscope is used to receive the echo electrical signals fed back by the transducer after reflection by the target assembly, and to acquire and convert the echo electrical signals. The display unit is used to display test waveforms, acoustic performance parameters, and test reports, and also supports the input, saving, and retrieval of transducer model parameters.

[0027] The beneficial effects of this invention are:

[0028] 1. This invention employs a contour-following fixture that perfectly matches the transducer's shape, along with a target positioning groove at the bottom of the test tank, ensuring that the transducer's center position is essentially aligned with the target's center position after clamping. The soft contact layer of the contour-following fixture can adapt to minor deformations of the transducer's outer shell, guaranteeing consistency in each clamping. This simplifies the traditional six-dimensional adjustment to only requiring fine-tuning in the X and Z directions within a plane, significantly reducing operational complexity and improving clamping efficiency.

[0029] 2. The triaxial testing mechanism of this invention uses a program to control the test probes to test the transducer array element pins point by point in a preset order, replacing manual poking operations. This not only eliminates the risks of memory errors and sequence errors inherent in manual operation, but also avoids oscilloscope reading deviations caused by inconsistent manual contact times through precise control of the probe contact time (holding it for a period of time before removing it), resulting in more accurate and consistent measurement results with a smaller error range. Simultaneously, the operator can perform other tasks during the testing process, reducing machine uptime and improving overall work efficiency.

[0030] 3. The moving target mechanism of this invention is linked with the triaxial testing mechanism through a synchronous drive mechanism to achieve precise synchronization between target oscillation and probe movement. The ball bearing at the end of the target and the arc-shaped groove cooperate to effectively solve the tilting problem caused by gravity of traditional suspended targets, ensuring smooth target oscillation and accurate positioning, reducing the difficulty of transducer orientation adjustment, and further ensuring the stability and repeatability of the test.

[0031] 4. By replacing different contouring fixtures and adapting different adapter circuit boards, this invention can adapt to the testing of transducers with different shapes and pin definitions, thereby improving the versatility and flexibility of the equipment and reducing testing costs. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the three-axis moving mechanism of the present invention.

[0035] Figure 3 This is a schematic diagram of the transducer clamping mechanism of the present invention.

[0036] Figure 4 This is a schematic diagram of the target fixing mechanism of the present invention.

[0037] Figure 5 This is a schematic diagram of the contouring fixture of the present invention.

[0038] Figure 6 This is a schematic diagram of the moving target mechanism of the present invention.

[0039] Figure 7 This is a schematic diagram of the synchronous drive mechanism of the present invention.

[0040] Figure 8 This is a schematic diagram of the structure of the triaxial testing platform of the present invention.

[0041] Figure 9 This is a schematic diagram of the 156-pin connector of the present invention.

[0042] Figure 10 This is a schematic diagram of the Tyco plug interface of the present invention.

[0043] In the diagram: 1. Test water tank; 11. Arc-shaped groove; 2. Transducer clamping mechanism; 21. Contouring fixture; 21. Soft layer; 22. Transducer mounting base; 23. Rotating shaft; 231. Groove; 24. XY angle adjuster; 241. Angle adjustment knob; 25. Rotating shaft sleeve; 3. Target assembly; 31. Target fixing mechanism; 311. Reflective target; 312. Target positioning mechanism; 3121. Detachable target bracket; 3122. Positioning groove; 32. Target moving mechanism; 321. Target fixing seat; 322. Synchronous drive mechanism; 323. Linear motion module; 324. Ball bearing; 5. Three-axis moving mechanism; 6. Three-axis test platform; 7. Oscilloscope; 8. Pulse generator; 9. Display. Detailed Implementation

[0044] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0045] like Figure 1 As shown, this embodiment provides a transducer acoustic testing device that can be repeatedly positioned and automatically tested. The device includes a clamping structure and a triaxial testing mechanism that cooperate with each other. Specifically, the clamping structure consists of a test water tank 1, a transducer clamping mechanism 2, a target assembly 3, and a triaxial moving mechanism 5. The specific configuration is as follows: the triaxial moving mechanism 5 is fixed above the test water tank 1; the transducer clamping mechanism 2 is mounted on the triaxial moving mechanism 5, and the transducer clamping mechanism 2 is equipped with a contour-following clamp 21 that precisely matches the shape of the transducer; the triaxial moving mechanism 5 can be used to adjust the spatial position of the transducer; the target assembly is disposed inside the test water tank 1 to provide a stable reflective surface for the acoustic testing of the transducer; the triaxial testing mechanism carries a test probe, which can be driven by a program to complete the test action point by point according to a preset procedure. During testing, the transducer is fixed on the contour jig 21. The three-axis moving mechanism 5 adjusts its position to keep the key array elements (including the first array element, the middle array element and the last array element) of the transducer equidistant from the reflective surface of the target material assembly. Based on this, the three-axis testing mechanism triggers the test probe to start the test, thereby achieving accurate detection of each array element of the transducer.

[0046] Specifically, such as Figures 2-3As shown, the transducer clamping mechanism 2 includes a transducer mounting base 22, a special contouring clamp 21 that matches the shape of the transducer, a rotating shaft 23 for angle adjustment, a rotating shaft sleeve 25 that is fixedly connected to the transducer mounting base 22 and sleeved outside the rotating shaft 23, and an XY angle adjuster 24 set at the bottom. The special contouring clamp 21 adopts a composite structure of outer frame and inner lining. The outer frame is made of ABS engineering plastic, and the inner lining is a soft layer 211, which can be formed by soft rubber through a potting process. The surface of the inner lining is precisely fitted to the transducer shell to achieve precise fitting and clamping of the transducer.

[0047] The transducer mounting base 22 is fixed to the three-axis moving mechanism 5 via a rotating shaft 23. An XY angle adjuster 24 is installed below the rotating shaft 23, which can realize fine-tuning of the angle after the transducer is clamped, further ensuring the relative positional accuracy of the transducer array elements and the target reflective surface. Specifically, the rotating shaft 23 is provided with a through-groove circular groove, and the XY angle adjuster 24 is provided with an angle adjustment knob. The circular groove engages with the flange inside the rotating shaft sleeve 25 to achieve horizontal positioning, ensuring the transducer mounting base 22 is installed horizontally along the X-direction. The rotating shaft 23 also features two different width grooves 231, which, when fitted with an angle adjustment knob, enable horizontal installation locking and Z-axis rotation adjustment respectively. (The smaller groove 231 is narrower than the inner flange of the sleeve and can be used for Z-axis locking when the transducer mounting base 22 is horizontally installed. The larger groove 231 is wider than the inner flange of the sleeve. When the transducer mounting base 22 needs to rotate along the Z-axis, the locking knob on the sleeve can be loosened, and the rotating shaft 23 can be moved up and down along the Z-axis to move the larger groove 231 to the position of the inner flange. The rotating shaft 23 can then rotate along the Z-axis until the desired angle is reached, at which point the knob can be tightened.) By cooperating with the angle adjustment knob and the different width grooves 231, the rotation angle of the transducer in the Z-axis direction can be precisely controlled, meeting the angle adaptation requirements of different testing scenarios.

[0048] Existing technologies use universal clamps for mounting, but because transducers are mostly curved and come in various models, the spatial orientation of the transducer varies after each clamping, requiring adjustments in six dimensions: axial movement along the X, Y, and Z axes, and radial oscillation. This solution, however, uses a specially designed contour-following fixture. Its inner soft layer 211 has a contour-following structure that matches the transducer's shape, ensuring a unique fit between the transducer shell and the fixture's inner soft layer 211. This restricts the transducer's freedom of movement within the fixture and significantly reduces the difficulty of post-clamping adjustments. The ABS engineering plastic outer frame provides reliable structural rigidity, ensuring the overall dimensional accuracy of the fixture and preventing transducer clamping deviation due to fixture deformation. The soft rubber liner utilizes its elastic deformation characteristics to adapt to slight deformations of the transducer shell caused by injection molding, assembly, etc. The liner's adaptive adjustment can re-fix the transducer shell to the original central symmetrical position, ensuring consistency in each clamping. On the other hand, it can avoid scratches, squeezing, and other damage to the transducer shell caused by rigid contact, protecting the quality of the finished transducer.

[0049] When different models of transducers need to be tested, only the corresponding model of the dedicated contour clamp 21 needs to be replaced to achieve quick switching. With the matching adapter circuit board, it can adapt to the testing of transducers with different shapes and pin definitions. It effectively solves the contradiction of poor universality and low positioning accuracy of traditional universal clamps, improves the universality and flexibility of the equipment, and reduces the equipment adaptation cost when testing different models of transducers. In actual clamping operations, after the transducer is placed in the special contour jig 21, the soft inner liner fits tightly against the transducer shell through elastic deformation and completes the central symmetrical positioning. Then, the angle is fine-tuned by the cooperation of the rotating shaft 23 and the XY angle adjuster 24 (rotating the screw on the upper part of the XY angle adjuster 24 (right side) allows the transducer mounting base 22 to rotate along the Y-axis; rotating the screw on the lower part of the XY angle adjuster 24 (front side) allows the transducer mounting base 22 to rotate along the X-axis). Finally, with the target positioning groove 3122 at the bottom of the test water tank 1, it can be ensured that the center position of the transducer is basically aligned with the center position of the target after clamping. The traditional 6-dimensional adjustment is simplified to only in-plane X and Z-axis fine-tuning, which significantly reduces the complexity of operation, improves clamping efficiency and positioning repeatability, and provides a reliable guarantee for the accuracy of subsequent automatic testing.

[0050] In one embodiment, the fixture can employ positioning pins and positioning holes, or magnetic assisted positioning, to further improve clamping speed and positioning accuracy. Specifically, this method can achieve fixation between the fixture and the mounting base, where the positioning pins and positioning holes enable precise alignment and installation, and magnetic assisted positioning simplifies the clamping operation.

[0051] In one embodiment, the soft rubber liner may be made of a polymer material with good elasticity and water resistance, such as silicone rubber, nitrile rubber, or fluororubber; the outer frame material may also be an engineering plastic with high strength and dimensional stability, such as polyoxymethylene (POM) or polycarbonate (PC).

[0052] Furthermore, the target assembly of the present invention includes a fixed target mechanism 3 and / or a movable target mechanism 32. Both the fixed target mechanism 3 and the movable target mechanism 32 are used to provide a reflective surface for the acoustic testing of the transducer, and both can be fixed in the test water tank 1 and located below the transducer clamping mechanism 2 by means of an adapter structure.

[0053] Example 1

[0054] In existing technologies, the target material is not fixed in a specific location within the water tank; it is often placed randomly or simply, lacking a dedicated positioning and support structure. This results in randomness in the target's placement, height, and angle during each test, making the relative position of the transducer and target uncertain. This necessitates repeated adjustments to the transducer clamping triaxial mechanism to accommodate the target, significantly increasing the workload and operational difficulty. Therefore, if... Figures 2-5 As shown, the target positioning mechanism 312 includes a detachable target support 3121 and a positioning groove 3122 located at the bottom of the test water tank 1. The shape of the positioning groove 3122 matches the base contour of the detachable target support 3121. One end of the detachable target support 3121 is inserted into the positioning groove 3122, and the other end is connected to the reflective target 311 and supports the reflective surface of the reflective target 311 facing the transducer clamping mechanism 2's dedicated contour clamp 21, ensuring that the reflective target 311 can accurately correspond to the test direction of the transducer. This application constructs a precise positioning structure through the cooperation of the detachable target support 3121 and the positioning groove 3122, so that the detachable target support 3121 can be precisely fixed in the same position each time it is inserted into the positioning groove 3122, thereby keeping the center position and height of the reflective target 311 consistent and establishing a stable fixed positional relationship between the transducer clamping mechanism 2 and the target. Furthermore, when the transducer requires a deeper testing depth, the target support can be removed, and the target can be directly installed in the slot at the bottom of the water tank.

[0055] Meanwhile, the detachable target holder 3121 not only facilitates the quick assembly and replacement of targets, but also expands the equipment's adaptability to different types of targets by replacing the holder with one suitable for different targets, thus improving the equipment's versatility. Combined with the precise clamping of the transducer-specific contour clamp 21, the center position of the transducer is essentially aligned with the center position of the target after clamping, eliminating the need for complex multi-dimensional position adjustments. Only minor adjustments in the X and Z directions are required to begin testing, significantly reducing pre-test adjustment time, improving test preparation efficiency, ensuring the stability and accuracy of test signals, reducing the difficulty of transducer orientation adjustment, further enhancing the equipment's versatility, and lowering the equipment adaptation cost for testing different types of targets.

[0056] Furthermore, the reflective surface of the reflective target 311 is a concave surface facing the contour clamp 21. The curvature of this concave surface is adapted to the emission angle of the transducer array, ensuring that the distance between each transducer element and the reflective surface remains consistent. The emitted ultrasonic signal, after being reflected by the reflective surface, can be fed back to the receiving element of the transducer more concentratedly, effectively improving the intensity and concentration of the echo signal and avoiding signal dispersion caused by the flatness of the reflective surface, thus improving the acquisition accuracy of the echo electrical signal. In addition, this device is equipped with a linkage control system electrically connected to the triaxial testing mechanism, which can realize precise synchronous control of the target swing angle and the test probe position. During testing, the test probe tests the transducer element pins point by point according to a preset sequence (optimal and fastest detection route). Thanks to the concave reflective surface design, which ensures that the distance between each transducer element and the reflective surface is consistent, no additional swing adjustment of the transducer is required. The acoustic test signal can be directly emitted by the array element for testing, greatly simplifying the testing process and improving testing convenience and efficiency.

[0057] Example 2

[0058] like Figures 6-7 As shown, the moving target mechanism 32 includes a reflective target 311, a target fixing base 321, and a synchronous drive mechanism 322. The reflective target 311 is connected to the target fixing base 321, and the synchronous drive mechanism 322 is fixedly connected to the test water tank 1 and its output end is connected to the target fixing base 321. When the triaxial test mechanism triggers the test probe to test each element of the transducer, the transducer is positioned above the reflective target 311, and the synchronous drive mechanism 322 can drive the reflective target 311 to swing in order to cooperate with the test.

[0059] Preferably, the moving target mechanism 32 further includes a linear motion module 323. The target fixing seat 321 is connected to the linear motion module 323 and can perform linear reciprocating motion along the linear motion module 323. The synchronous drive mechanism 322 drives the linear motion module 323 to swing. At the same time, a ball bearing 324 is installed at the end of the reflective target 311. The test water tank 1 is provided with an arc-shaped groove 11 corresponding to the ball bearing 324. The ball bearing 324 is embedded in the arc-shaped groove 11 to form a target guide limit, further ensuring the accuracy of the swing trajectory. On the one hand, the rigid connection between the synchronous drive mechanism 322 and the target fixing seat 321 replaces the traditional suspension installation, completely eliminating the influence of gravity on the target's attitude and avoiding the increased difficulty in transducer orientation adjustment caused by suspension tilt, thus ensuring the stability of the target's initial attitude. On the other hand, different types of transducers have different distances from the array element to the reflective target. The linear motion module 323 can adjust the target's position, allowing the target to swing according to the corresponding radius of rotation, expanding the target's testing adaptability range and meeting the testing requirements of transducers with different array element arrangements. Meanwhile, the ball bearing 324 and the arc-shaped... The guide and limiting fit of the groove 11, by replacing sliding friction with rolling friction, not only reduces the resistance during the target swing process and reduces mechanical wear to extend the service life of the equipment, but also strictly constrains the swing trajectory of the target, avoiding the problem of inconsistent distance between the transducer array element and the target reflective surface caused by swing deviation, thus ensuring the stability of the test signal. At the same time, the design of the synchronous drive mechanism 322 directly driving the target swing lays the structural foundation for subsequent synchronous linkage with the triaxial testing mechanism. Compared with manual drive, its swing angle is more controllable, providing hardware support for achieving precise synchronous testing.

[0060] Furthermore, the synchronous drive mechanism 322 may further include a synchronous wheel motor and a target swing transmission assembly. The synchronous wheel motor is mounted on the test water tank 1 and drives the target swing transmission assembly through a synchronous belt. The target swing assembly includes transmission elements such as an angler, coupling, and worm gear, which transmit the rotational power output of the synchronous wheel motor to the linear motion module 323 (this is prior art and will not be described in detail here). When the module swings, it will cause the reflective target 311 to change its angle under the path adjustment of the arc groove 11, thereby adjusting the reflection angle of the transducer. This application replaces manual rotation by driving the target material to swing using a synchronous wheel motor. Combined with the guide and limiting structure of the arc-shaped guide rail and ball bearing 324, it ensures that the target material swings smoothly and the trajectory is accurate. At the same time, an electrical connection is established with the three-axis testing mechanism through the linkage control system to achieve coordinated linkage between the target material swing and the probe testing. That is, when the test probe tests the transducer array element pins point by point according to the preset order (array element arrangement order route), the synchronous drive mechanism 322 drives the target material to swing by one array element angle, completely replacing the manual multi-action coordinated operation and eliminating synchronization errors and operational deviations caused by human factors. The system enables automatic and stable oscillation of the moving target, effectively reducing the difficulty of transducer orientation adjustment. The high precision of the synchronous control between the target oscillation and probe testing ensures the accuracy of the test position of each array element, avoiding omissions or incorrect sequences in array element testing. The guide and limiting cooperation between the ball bearing 324 and the arc-shaped groove 11 ensures the oscillation stability of the target during long-term use, significantly improving the reliability of the testing system and the consistency of test results. At the same time, it replaces manual collaborative operation, reducing reliance on the operator's skill level, simplifying the operation process, and improving testing efficiency.

[0061] Example 3

[0062] This embodiment includes the fixed target mechanism 3 of Embodiment 1 and the movable target mechanism 32 of Embodiment 2. Their specific structures and technical effects have been described above and will not be repeated here.

[0063] The triaxial testing mechanism is equipped with a high wear-resistant conductive test probe. It can be controlled by a preset program to drive the test probe to complete contact testing point by point according to the preset array element testing sequence. It adopts a modular integrated design and consists of a triaxial testing platform 6, an oscilloscope 7, a pulse generator 8 and a display 9 connected to each other through signal cables.

[0064] For details, please refer to Figure 1 , Figures 8-10The triaxial test platform 6 integrates multiple sets of test probes, including a socket mounting base, a 156-pin socket, a Tyco socket, a probe mounting plate, a probe mounting base, signal line test probes, and ground test probes. Two different transducer interfaces are mounted on the socket mounting plate of the triaxial test platform 6; the 156-pin plug interface is on the right, and the Tyco plug interface is on the left. The socket mounting base can move back and forth along the Y-axis. A crossbeam is mounted on the gantry of the triaxial test platform 6, which can move up and down along the Z-axis. There are two independently moving sliders on the crossbeam, each of which can move left and right along the X-axis. The right slider is equipped with test pins for the 156-pin plug interface, and the left slider is equipped with test pins for the Tyco plug interface.

[0065] Among them, such as Figure 9 As shown, the 156-pin connector interface includes a 156-pin socket mounting bracket, a 156-pin socket, a grounding pad, a grounding plate, a switch, signal line probes, and a ground probe. The probe on the right is the signal line probe, and the probe on the left is the ground probe. A grounding plate is installed on the side of the 156-pin connector. When the signal line probe contacts the signal line pin, the probe on the left simultaneously contacts the grounding plate, forming a loop to test the transducer array element signal. A switch is provided on the right side for switching between testing probes with two different grounding methods.

[0066] like Figure 10 As shown, the Tyco connector interface includes four support pillars, a circuit board base, a Tyco socket, a Tyco socket test circuit board, signal line probes, and ground probes. The four support pillars are used to fix the circuit board base. The Tyco socket test circuit board is installed on the circuit board base. The front probe is the signal line probe, and the rear probe is the ground probe. The corresponding circuit board has a signal source point on the front side and a ground pad on the rear side. When the signal line probe contacts the signal source point, the ground probe simultaneously contacts the ground pad, and the two points form a loop to test the transducer array element signal.

[0067] The oscilloscope 7 is used to receive the echo electrical signal fed back by the transducer after being reflected by the target assembly 3, and to acquire and convert the echo electrical signal; the display 9 is used to display the test waveform, acoustic performance parameters and test report, and also supports the input, saving and recall of transducer model parameters.

[0068] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A transducer acoustic testing device capable of repeated positioning and automatic testing, comprising an interconnected clamping structure and a triaxial testing mechanism, characterized in that, The clamping structure includes a test water tank, a transducer clamping mechanism, a target assembly, and a three-axis moving mechanism. The three-axis moving mechanism is fixed above the test water tank. The transducer clamping mechanism is installed on the three-axis moving mechanism and includes a contouring fixture adapted to the shape of the transducer. The three-axis moving mechanism is used to adjust the position of the transducer. The contact surface of the contouring fixture is a soft layer. The soft layer can adapt to the transducer shell through elastic deformation and fix it to a centrally symmetrical position. The target assembly is located inside the test water tank and provides a reflective surface for the acoustic testing of the transducer. The target assembly includes a fixed target mechanism and a movable target mechanism. Both the fixed target mechanism and the movable target mechanism are used to provide a reflective surface for the acoustic testing of the transducer, and both can be fixed in the test water tank and located below the transducer clamping mechanism through an adapter structure. The triaxial testing mechanism is equipped with a test probe and can drive the test probe to test point by point according to a preset program. During testing, the transducer is fixed on the contour jig, the three-axis moving mechanism adjusts the position of the transducer and makes the key array elements set by the transducer, namely the first array element, the middle array element and the last array element, equal in distance from the reflective surface of the target material assembly, and the three-axis testing mechanism triggers the test probe to test each array element of the transducer. The moving target mechanism is linked with the triaxial testing mechanism through a synchronous drive mechanism to achieve precise synchronization between the target swing and the test probe movement; The triaxial testing mechanism includes an interconnected triaxial testing platform, an oscilloscope, a pulse generator, and a display. The triaxial testing platform is equipped with test probes for interface testing with the transducer. The pulse generator outputs excitation pulse signals to the transducer to trigger it to generate acoustic test signals. The oscilloscope receives the echo electrical signals reflected by the transducer from the target assembly and performs waveform conversion on the echo electrical signals. The display shows the test waveforms, acoustic performance parameters, and test reports, and also supports the input, saving, and retrieval of transducer model parameters.

2. The transducer acoustic testing device for repeatable positioning and automatic testing as described in claim 1, characterized in that, The transducer clamping mechanism also includes a transducer mounting base and a rotating shaft sleeve. The mounting base is fixedly connected to the rotating shaft sleeve, the rotating shaft sleeve is sleeved on the outside of the rotating shaft and fixed on the three-axis moving mechanism, and an XY angle adjuster is installed below the rotating shaft.

3. The transducer acoustic testing device for repeatable positioning and automatic testing as described in claim 2, characterized in that, The rotating shaft is provided with a through-groove, which engages with the flange inside the rotating shaft sleeve to achieve horizontal positioning. The rotating shaft is also provided with two different widths of grooves, which are adapted to the angle adjustment knob to achieve horizontal installation and locking and Z-axis rotation adjustment respectively.

4. The transducer acoustic testing device for repeatable positioning and automatic testing as described in claim 1, characterized in that, The fixed target mechanism includes a reflective target and a target positioning mechanism, wherein the reflective target is fixed in the test water tank by the target positioning mechanism.

5. The transducer acoustic testing device for repeatable positioning and automatic testing as described in claim 4, characterized in that, The target positioning mechanism includes a detachable target bracket and a positioning groove set in the test water tank. One end of the detachable target bracket is inserted into the positioning groove, and the other end is connected to the reflective target and supports the reflective surface of the reflective target facing the contour clamp.

6. The transducer acoustic testing device for repeatable positioning and automatic testing as described in claim 4, characterized in that, The moving target mechanism includes a reflective target, a target fixing base, and a synchronous drive mechanism. The reflective target is connected to the target mounting base, and the synchronous drive mechanism is fixedly connected to the test water tank and its output end is connected to the target mounting base. When the triaxial testing mechanism triggers the test probe to test each element of the transducer, the transducer is positioned above the reflective target, and the synchronous drive mechanism drives the reflective target to swing for testing.

7. The transducer acoustic testing device for repeatable positioning and automatic testing as described in claim 6, characterized in that, The moving target mechanism also includes a linear motion module. The target fixing base is connected to the linear motion module and can perform linear reciprocating motion along the linear motion module. The synchronous drive mechanism drives the linear motion module to swing. The reflective target is equipped with a ball bearing at its end, and the test tank has an arc-shaped groove corresponding to the ball bearing. The ball bearing is embedded in the arc-shaped groove to form a target guide and limit.

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