A filter performance testing device based on ultrasonic wave

Abstract

The present application relates to the technical field of filters, and in particular to an ultrasonic filter performance testing device, comprising a supporting tube, a connecting tube rotatably penetrated in the supporting tube, a chassis provided in the connecting tube, and a detector provided in the supporting tube; the detector comprises an annular slide groove provided in the supporting tube, a plurality of pairs of evenly distributed positive conductive strips and negative conductive strips symmetrically provided on both sides of the annular slide groove, positive rubber strips provided between adjacent positive conductive strips, and negative rubber strips provided between adjacent negative conductive strips. During the rotation of the connecting tube of the present invention, the connecting tube drives a vibrator provided at the bottom of the supporting tube, and the vibrator generates a vibration effect on the basis of a dynamic test environment through a combination of an eccentric disk and an eccentric ring, thereby providing a vibration environment for the filter, thereby evaluating the performance of the filter under vibration conditions during the test.

Description

Technical Field

[0001] The present application relates to the technical field of filters, and in particular to an ultrasonic-based filter performance testing device. Background Art

[0002] Ultrasound is a type of sound wave that is imperceptible to human hearing. Its frequency range is usually over 20kHz. Due to its unique physical properties, this sound wave plays an important role in many fields such as medicine, industry, and scientific research.

[0003] An ultrasonic filter is an electronic device or component specially designed to process sound wave signals. It allows sound wave signals within a specific frequency range to pass through while suppressing or attenuating signals in other frequency ranges. Ultrasonic filters play a vital role in ultrasonic applications. They can improve the signal-to-noise ratio of the signal and enhance the performance and reliability of the system.

[0004] The center frequency, bandwidth, insertion loss, return loss, etc. of the ultrasonic filter are directly related to the performance and application effect of the filter. For example, the center frequency determines the center frequency of the signal allowed to pass through the filter, while the bandwidth determines the frequency range that the filter can process. The insertion loss and return loss respectively reflect the energy loss and reflection of the signal when it passes through the filter. In order to ensure the performance of the ultrasonic filter, professional testing equipment and methods are usually required for evaluation and verification.

[0005] For example, the test of a filter with publication number CN116068317A relates to the field of filter technology. The prior art includes a base assembly and a pressing block rotatably connected to the base assembly. The filter is arranged on the base assembly, and a radio frequency connector assembly is fixedly arranged on the pressing block. After the pressing block is rotated and attached to the base assembly, the lead pin of the radio frequency connector assembly contacts the electrode end of the filter, and the radio frequency connector assembly is connected to a vector network analyzer of an external device. The above-mentioned prior test device gets rid of the traditional dependence on a probe station, does not require special personnel to operate, and the test is more flexible, which effectively improves the test efficiency and reduces the test cost.

[0006] However, the above existing technologies still have some defects when testing filters:

[0007] 1. In the above-mentioned prior art, the contact stability between the lead pin and the electrode end of the filter can be improved by designing the width of the first lead pin and the second lead pin to be close to the width of the input end and the output end of the filter. However, in actual use, due to environmental factors such as rotation and vibration of the equipment, the contact stability between the lead pin and the input end and the output end may be affected. For example, the vibration generated by the equipment during operation may cause a slight movement of the contact point between the lead pin and the electrode end, thereby affecting the contact stability, or temperature changes may cause the material to expand or contract, changing the contact pressure between the lead pin and the electrode end, thereby generating interference with the contact resistance of the filter. The above-mentioned prior art does not take these potential interference factors into consideration, but is inconsistent with reality, and the test results cannot accurately reflect the performance of the filter.

[0008] 2. In the above-mentioned prior art, the input and output ends of the filter 3 are tested through the first RF connector and the second RF connector, and then the data fed back by the first RF connector and the second RF connector are read through the vector network analyzer, and the data are saved, providing a data basis for the subsequent analysis of the filter function. During the entire use cycle of the filter, the filter will receive and process many sound wave signals of different frequencies, and the RF connector and the vector network analyzer can only cover a specific frequency range. For sound wave signals beyond this range, the prior art may not be able to perform effective testing, and cannot ensure the stable performance of the filter during long-term use.

[0009] Based on this, and in accordance with the above-mentioned viewpoints, there is still room for improvement in the existing technology for filter testing. Summary of the invention

[0010] An ultrasonic filter performance testing device comprises a supporting cylinder, a connecting cylinder is rotatably inserted in the supporting cylinder, a chassis is arranged in the connecting cylinder, and a detector is arranged in the supporting cylinder;

[0011] The detector comprises an annular chute provided in the support tube, and a plurality of pairs of evenly distributed positive conductive strips and negative conductive strips are symmetrically arranged on both sides of the annular chute, positive rubber strips are arranged between adjacent positive conductive strips, and negative rubber strips are arranged between adjacent negative conductive strips;

[0012] The detector also includes a positive conductive ring, wherein a plurality of the positive conductive strips are connected by a positive rubber strip to form a positive conductive ring, and a plurality of the negative conductive strips are connected by a negative rubber strip to form a negative conductive ring;

[0013] The connecting tube is provided with a detection member located in the supporting tube and rotatably connected to the annular slide groove;

[0014] The detection piece includes a support rod disposed on the support cylinder and located inside the support cylinder. One end of the support rod is provided with a support frame rotatably connected to the annular chute. A U-shaped block is slidably disposed inside the support frame. Positive and negative conductive blocks corresponding to the positive conductive ring and the negative conductive ring are respectively disposed at two ends of the U-shaped block. A support spring is disposed between one end of the U-shaped block facing away from the annular chute and the support frame.

[0015] Each pair of positive and negative conductive strips outputs acoustic wave signals of different frequencies, and each pair of conductive strips is connected to an ultrasonic generator.

[0016] Preferably, a plurality of pairs of uniformly distributed positive and negative power-on strips are disposed at the bottom of the annular chute. A positive pulse strip is disposed inside the annular chute between two adjacent positive power-on strips. A negative pulse strip is disposed inside the annular chute between two adjacent negative power-on strips.

[0017] Preferably, positive insulating strips are disposed between two sides of the positive pulse strip and the adjacent positive power-on strips. Negative insulating strips are disposed between two sides of the negative pulse strip and the adjacent negative power-on strips.

[0018] A plurality of the positive power-on strips, the positive pulse strips and the positive insulating strips are connected to each other to form a positive power-on ring. A plurality of the negative power-on strips, the negative pulse strips and the negative insulating strips are connected to each other to form a negative power-on ring.

[0019] Preferably, the detection piece further includes a receiving hole opened at the bottom of the support frame. A sliding support block is slidably disposed inside the receiving hole. The sliding support block is provided with protruding portions located on the positive power-on ring and the negative power-on ring.

[0020] Positive and negative conductive blocks that are in contact with the positive power-on ring and the negative power-on ring are respectively disposed at two ends of the protruding portion on the sliding support block.

[0021] A communication hole communicating with the receiving hole is jointly opened between the U-shaped block and the support frame. A contact spring is disposed at one end of the sliding support block facing away from the annular chute through the communication hole.

[0022] Preferably, the positive conductive ring and the negative conductive ring are rotatably connected to the annular chute. Matching gear rings are disposed on opposite sides of the positive conductive ring and the negative conductive ring. A matching gear meshing with the matching gear ring is rotatably disposed inside the support cylinder through a bracket. An arc-shaped rack meshing with the matching gear is disposed on the connecting cylinder through a bracket.

[0023] Preferably, a vibrator is disposed at the bottom of the support cylinder.

[0024] The vibrator includes a vibrating rod. The chassis rotates and slides inside the connecting cylinder. The lower end of the chassis is provided with a vibrating rod. The lower end of the vibrating rod slidably penetrates through the bottom of the connecting cylinder and then is provided with a connecting seat.

[0025] A driving shaft is rotatably arranged at the bottom of the connecting cylinder through a bracket, an eccentric disk is arranged on the driving shaft, and an eccentric ring rotatably connected to the connecting seat is rotatably arranged on the eccentric disk.

[0026] Preferably, the connecting seat is rotationally connected to the vibration rod, and the vibration rod is provided with a spiral groove that cooperates with the supporting tube.

[0027] Preferably, a driving member is provided at the bottom of the support cylinder;

[0028] The driving member comprises a driving gear ring arranged at the bottom of the connecting cylinder, a driving motor is arranged at the bottom of the supporting cylinder through a bracket, and a driving end of the driving motor is provided with a driving gear meshing with the driving gear ring.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. During the rotation of the connecting tube of the present invention, the connecting tube will drive the vibrator arranged at the bottom of the supporting tube. The vibrator generates a vibration effect on the basis of a dynamic test environment through a combination of an eccentric disk and an eccentric ring, thereby providing a vibration environment for the filter, thereby evaluating the performance of the filter under vibration conditions during the test.

[0031] 2. The detection element of the present invention will contact several pairs of positive conductive strips and negative conductive strips and several pairs of positive rubber strips and negative rubber strips in sequence, and the detection element will be electrically connected to the contacting pair of positive conductive strips and negative conductive strips, thereby intermittently inputting the sound wave signal into the filter, and detecting the output signal of the filter at the same time, using an ultrasonic receiver or sensor to collect the sound wave signal at the output end of the filter, and transmitting the data to a data acquisition system, analyzing the signal at the output end of the filter, and evaluating the filtering effect of the filter on ultrasonic waves of different frequencies, including parameters such as insertion loss, bandwidth, and center frequency.

[0032] 3. Each pair of positive conductive strips and negative conductive strips of the present invention will output sound wave signals of different frequencies. Each pair of conductive strips is connected to an ultrasonic generator. These generators can generate sound wave signals of different frequencies. The ultrasonic generator can be a piezoelectric crystal, an ultrasonic transducer or other electronic device that can generate ultrasonic waves, so that the performance of the filter at different frequencies can be tested, including key parameters such as passband, stopband, insertion loss, bandwidth, etc., to ensure that the filter can work normally within the designed frequency range, and it also helps to improve the quality and reliability of the filter.

[0033] 4. The rotation of the detection part of the present invention will periodically contact a pair of positive insulating strips and negative insulating strips, a pair of positive insulating strips and negative insulating strips, a pair of positive pulse strips and negative pulse strips, and a pair of positive insulating strips and negative insulating strips in sequence, thereby realizing a comprehensive test of the filter under different power supply conditions, recording the response of the filter under different power supply conditions, including power supply stability and performance under power supply pulse conditions, analyzing the data to evaluate the performance of the filter, including power supply stability, filtering effect, etc. By simulating power supply fluctuations and pulse conditions, the performance of the filter in extreme working environments can be evaluated to ensure that it can work stably under various conditions.

[0034] 5. Each pair of positive power bars and negative power bars of the present invention is connected to an adjustable power supply, and each pair of positive pulse bars and negative pulse bars is connected to a pulse generator. The pulse generator can generate power pulses of different frequencies. By programming the pulse generator, a specific pulse frequency can be set for each pair of pulse bars. By outputting positive and negative power supplies with different voltage resistances and testing power pulses of different frequencies, the performance of the filter under various power supply conditions can be comprehensively evaluated, providing important data support for the design and optimization of the filter. At the same time, by simulating the power supply changes in the actual working environment, the stability and reliability of the filter in actual applications can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present invention.

[0036] Figure 2 It is a three-dimensional cross-sectional view of the present invention.

[0037] Figure 3 It is a cross-sectional view between the support tube, the positive conductive ring and the negative conductive ring of the present invention.

[0038] Figure 4 The present invention Figure 3 A partial enlarged view of point A.

[0039] Figure 5 It is a cross-sectional view among the support cylinder, the positive conductive ring, the negative conductive ring, the positive power-carrying ring and the negative power-carrying ring of the present invention.

[0040] Figure 6 It is a partial enlarged view of B of the present invention 5.

[0041] Figure 7 is a cross-sectional view of the detector of the present invention.

[0042] Figure 8 The present invention Figure 7 A partial enlarged view of point C.

[0043] Fig. 9 It is a cross-sectional view of the detection member of the present invention.

[0044] Fig.10 It is a schematic structural diagram of the vibrator of the present invention.

[0045] Fig.11 is the present invention Fig.10 Local enlarged view of part D.

[0046] Fig.12 It is a schematic structural diagram of the detector of the present invention.

[0047] Fig.13 is the present invention Fig.12 Local enlarged view of part E.

[0048] Fig.14 It is a schematic structural diagram of the driving member of the present invention.

[0049] Fig.15 is the present invention Fig.14 Local enlarged view of part F.

[0050] Explanation of reference numerals: 1, support cylinder; 2, connecting cylinder; 3, chassis; 4, detector; 41, annular sliding groove; 42, positive conductive ring; 421, positive conductive strip; 422, positive rubber strip; 43, negative conductive ring; 431, negative conductive strip; 432, negative rubber strip; 44, positive energizing ring; 441, positive energizing strip; 442, positive pulse strip; 443, positive insulating strip; 45, negative energizing ring; 451, negative energizing strip; 452, negative pulse strip; 453, negative insulating strip; 5, detecting member; 51, support rod; 52, support frame; 53, C-shaped block; 531, positive conductive block; 532, negative conductive block; 54, support spring; 55, receiving hole; 56, sliding support block; 561, protruding portion; 562, positive energizing block; 563, negative energizing block; 57, communication hole; 58, abutting spring; 6, matching gear ring; 61, matching gear; 62, arc-shaped rack; 7, vibrator; 71, vibrating rod; 72, connecting seat; 73, drive shaft; 74, eccentric disc; 75, eccentric ring; 76, spiral groove; 8, driving member; 81, driving gear ring; 82, driving motor; 83, driving gear; 84, transmission internal gear ring; 85, driving bevel gear ring; 86, driving bevel gear. Detailed implementation manners

[0051] The following further elaborates on this application with reference to the appended Figures 1 to 15 drawings.

[0052] The embodiment of this application discloses a filter performance testing device based on ultrasonic waves. By testing the filter under continuously changing power supply conditions and signal frequencies, the performance of the filter under normal working conditions can be evaluated, and its stability and reliability under extreme conditions can also be tested.

[0053] Embodiment 1:

[0054] An ultrasonic filter is an electronic device used to process sound wave signals. It allows sound wave signals in a specific frequency range to pass through while suppressing or attenuating signals in other frequency ranges. An ultrasonic filter usually includes an input end consisting of a positive input terminal and a negative input terminal, the input end is used to receive external input sound wave signals, and an output end consisting of a positive output terminal and a negative output terminal, the output end is used to output the sound wave signal after filtering.

[0055] When the filter is working, the sound wave signal is input into the filter through the positive input terminal and the negative input terminal. The filter circuit processes the input sound wave signal according to the designed parameters, allowing the signal in a specific frequency range to pass through while suppressing or attenuating the signal in other frequency ranges. The processed sound wave signal is output through the positive output terminal and the negative output terminal.

[0056] In practical applications, the performance of ultrasonic filters needs to be evaluated and verified by professional testing equipment and methods. For example, a vector network analyzer (VNA) can be used to measure the S parameters of the filter (such as S11 and S21) to evaluate its frequency response, insertion loss, return loss and other performance indicators. In addition, the temperature stability, voltage resistance, electromagnetic compatibility and other characteristics of the filter need to be considered to ensure its reliability and stability in the actual working environment.

[0057] Reference Figure 1 and Figure 2 A filter performance testing device based on ultrasonic wave comprises a supporting tube 1, in which a connecting tube 2 is rotatably penetrated.

[0058] When testing the filter, first fix the filter on the chassis 3 set in the connecting tube 2, then connect the positive input terminal and negative input terminal of the filter to the detector 4 set in the supporting tube 1, and then start the driving member 8 set at the bottom of the supporting tube 1. The driving member 8 will drive the connecting tube 2 to rotate, and the rotating connecting tube 2 will drive the detector 4 to test the filter. The detector 4 detects the effect of the filter in filtering ultrasonic waves by continuously switching sound wave signals of different frequencies and inputting the sound wave signals into the input end of the filter.

[0059] Reference Figure 3 and Figure 4 Specifically, the detector 4 includes an annular groove 41 provided in the support tube 1. When performing filter testing, the filter is first fixed on the chassis 3, and then the positive input terminal and the negative input terminal of the filter are connected to the detection member 5 provided on the connecting tube 2, and then the driving member 8 is started. The driving member 8 will drive the connecting tube 2 to rotate, and the rotating connecting tube 2 will drive the detection member 5 to rotate together. The detection member 5 will rotate in the annular groove 41 around the axis of the connecting tube 2 through the rotation connection with the annular groove 41.

[0060] Several pairs of evenly distributed positive conductive strips 421 and negative conductive strips 431 are symmetrically arranged on both sides of the annular slide groove 41. Each pair of positive conductive strips 421 and negative conductive strips 431 outputs ultrasonic waves of different frequencies. Positive rubber strips 422 are arranged between adjacent positive conductive strips 421, and negative rubber strips 432 are arranged between adjacent negative conductive strips 431.

[0061] During the rotation of the detection member 5, the detection member 5 will contact the positive conductive ring 42 formed by connecting a plurality of positive conductive strips 421 through the positive rubber strips 422, and the negative conductive ring 43 formed by connecting a plurality of negative conductive strips 431 through the negative rubber strips 432. The detection member 5 will receive the sound wave signals output by the pair of positive conductive strips 421 and negative conductive strips 431 in contact with it, and transmit the received sound wave signals to the filter input end through electrical connection, and then detect whether the sound wave output by the filter output end is accurate.

[0062] When the detection member 5 rotates and contacts a pair of positive rubber strips 422 and negative rubber strips 432, the detection member 5 is located between the two pairs of positive conductive strips 421 and negative conductive strips 431. At this time, the detection member 5 will disconnect the electrical connection with the positive conductive strips 421 and the negative conductive strips 431, that is, no sound wave signal is input into the filter. As the detection member 5 continues to rotate, the detection member 5 will continue to contact the next pair of conductive strips and negative conductive strips 431. At this time, the detection member 5 will again receive the sound wave signal output by the pair of positive conductive strips 421 and negative conductive strips 431 in contact with it, and transmit the received sound wave signal to the filter input end through electrical connection, and then detect whether the sound wave output by the filter output end is accurate.

[0063] In this way, the detection element 5 will contact several pairs of positive conductive strips 421 and negative conductive strips 431 and several pairs of positive rubber strips 422 and negative rubber strips 432 in sequence, and the detection element 5 will be electrically connected to the contacted pair of positive conductive strips 421 and negative conductive strips 431, so as to intermittently input the sound wave signal into the filter, and detect the output signal of the filter at the same time, use an ultrasonic receiver or sensor to collect the sound wave signal at the output end of the filter, and transmit the data to the data acquisition system, analyze the signal at the output end of the filter, and evaluate the filtering effect of the filter on ultrasonic waves of different frequencies, including parameters such as insertion loss, bandwidth, and center frequency.

[0064] Each pair of positive conductive strips 421 and negative conductive strips 431 will output sound wave signals of different frequencies. Each pair of conductive strips is connected to an ultrasonic generator. These generators can generate sound wave signals of different frequencies. The ultrasonic generator can be a piezoelectric crystal, an ultrasonic transducer or other electronic device that can generate ultrasonic waves. This can test the performance of the filter at different frequencies, including key parameters such as passband, stopband, insertion loss, and bandwidth, to ensure that the filter can work normally within the designed frequency range, and also help improve the quality and reliability of the filter.

[0065] Among them, the filter design usually includes a power interface for connecting to a power supply. This interface usually consists of a positive pole and a negative pole of the power supply, which is used to power the filter to ensure the correct polarity connection of the power supply. The detector 4 continuously switches sound wave signals of different frequencies and inputs the sound wave signals into the input end of the filter to detect the effect of the filter in filtering ultrasonic waves. At the same time, it can also input a constantly changing current into the positive and negative poles of the power supply to detect the stability of the internal electronic components of the filter when the power supply is constantly changing, as well as the effect of the filter in filtering ultrasonic waves when the power supply is unstable.

[0066] Reference Figure 5 and Figure 6 Specifically, a plurality of pairs of evenly distributed positive power bars 441 and negative power bars 451 are arranged at the bottom of the annular slide 41, and each pair of positive power bars 441 and negative power bars 451 will output positive and negative power supplies of different voltage resistances, a positive pulse bar 442 is arranged between two adjacent positive power bars 441 in the annular slide 41, and a negative pulse bar 452 is arranged between two adjacent negative power bars 451 in the annular slide 41, and each pair of positive pulse bars 442 and negative pulse bars 452 will output power pulses of different frequencies; positive insulating bars 443 are arranged between the two sides of the positive pulse bar 442 and the adjacent positive power bars 441, and negative insulating bars 453 are arranged between the two sides of the negative pulse bar 452 and the adjacent negative power bars 451.

[0067] During the rotation of the detection member 5, the detection member 5 will contact the positive power ring 44 formed by connecting a plurality of positive power bars 441, positive pulse bars 442 and positive insulating bars 443, and the negative power ring 45 formed by connecting a plurality of negative power bars 451, negative pulse bars 452 and negative insulating bars 453. The detection member 5 will receive the positive and negative power input by a pair of positive power bars 441 and negative power bars 451 in contact with it, and transfer the received positive and negative power to the positive and negative power poles of the filter through electrical connection, and then detect the stability of the internal electronic components of the filter when the power supply is constantly changing, as well as the effect of the filter in filtering ultrasonic waves when the power supply is unstable.

[0068] When the detection member 5 rotates and contacts a pair of positive insulating strips 443 and negative insulating strips 453, the detection member 5 is located between a pair of positive power-on strips 441 and negative power-on strips 451 and a pair of positive pulse strips 442 and negative pulse strips 452. At this time, the detection member 5 will disconnect the electrical connection with the positive power-on strips 441 and negative power-on strips 451 or the positive pulse strips 442 and negative pulse strips 452, that is, no positive or negative power is transmitted to the positive power pole and negative power pole of the filter.

[0069] As the detection member 5 continues to rotate, the detection member 5 will continue to contact the next pair of positive power bars 441 and negative power bars 451. At this time, the detection member 5 will receive the positive and negative power output by the pair of positive power bars 441 and negative power bars 451 in contact with it, and transfer the received positive and negative power to the positive power pole and the negative power pole of the filter through electrical connection. Then, the stability of the internal electronic components of the filter when the power supply is constantly changing, and the effect of the filter in filtering ultrasonic waves when the power supply is unstable are detected.

[0070] The continued rotation of the detection part 5 will contact a pair of positive insulating strips 443 and negative insulating strips 453 again, disconnecting the electrical connection with the positive power strip 441 and negative power strip 451 or the positive pulse strip 442 and negative pulse strip 452, that is, no positive or negative power is transmitted to the positive power pole and negative power pole of the filter.

[0071] As the detection element 5 continues to rotate, the detection element 5 will continue to contact the next pair of positive pulse bars 442 and negative pulse bars 452. At this time, the detection element 5 will again receive the power pulses output by the pair of positive pulse bars 442 and negative pulse bars 452 in contact with it, and transmit the received power pulses to the positive and negative power poles of the filter through electrical connection to test the filter's ultrasonic filtering effect and performance under power pulse conditions.

[0072] After that, the detection member 5 continues to rotate, and the detection member 5 will continue to contact a pair of positive insulating strips 443 and negative insulating strips 453. The detection member 5 will disconnect the electrical connection with the positive power strip 441 and the negative power strip 451 or the positive pulse strip 442 and the negative pulse strip 452, and then continue to rotate to contact the next pair of positive power strips 441 and negative power strips 451. At this time, the detection member 5 will again receive the positive and negative power output by the pair of positive power strips 441 and negative power strips 451 in contact with it, and transfer the received positive and negative power to the positive and negative power poles of the filter through electrical connection.

[0073] In such a cycle, the rotation of the detection part 5 will periodically contact a pair of positive insulating strips 443 and negative insulating strips 453, a pair of positive insulating strips 443 and negative insulating strips 453, a pair of positive pulse strips 442 and negative pulse strips 452, and a pair of positive insulating strips 443 and negative insulating strips 453 in sequence, so as to realize the comprehensive test of the filter under different power supply conditions, record the response of the filter under different power supply conditions, including the performance under power supply stability and power supply pulse conditions, analyze the data to evaluate the performance of the filter, including power supply stability, filtering effect, etc. By simulating power supply fluctuations and pulse conditions, the performance of the filter under extreme working environments can be evaluated to ensure its stable operation under various conditions.

[0074] Among them, each pair of positive energized strips 441 and negative energized strips 451 are connected to an adjustable power supply, which can output positive and negative power supplies with different voltages and resistances. By adjusting the settings of the power supply, specific voltage and resistance values can be provided for each pair of conductive strips; each pair of positive pulse strips 442 and negative pulse strips 452 are connected to a pulse generator, and the pulse generator can generate power supply pulses with different frequencies. By programming the pulse generator, specific pulse frequencies can be set for each pair of pulse strips.

[0075] Through the tests of outputting positive and negative power supplies with different voltage resistances and power supply pulses with different frequencies, the performance of the filter under various power supply conditions can be comprehensively evaluated, providing important data support for the design and optimization of the filter. At the same time, by simulating the power supply changes in the actual working environment, the stability and reliability of the filter in actual applications can be ensured.

[0076] Refer to Figures 7 to 9 , specifically, the detection part 5 includes a support rod 51 arranged on the support cylinder 1 and located inside the support cylinder 1. When the driving part 8 drives the connecting cylinder 2 to rotate, the connecting cylinder 2 will drive the support frame 52 arranged at one end thereof to rotate around the axis of the connecting cylinder 2 through the support rod 51. The support frame 52 drives the C-shaped block 53 slidably arranged inside the support frame 52 to rotate together through the rotational connection with the annular chute 41. Positive conductive blocks 531 and negative conductive blocks 532 corresponding to the positive conductive ring 42 and the negative conductive ring 43 are respectively arranged at both ends of the C-shaped block 53.

[0077] During the rotation process, the positive conductive block 531 and the negative conductive block 532 of the U-shaped block 53 are in electrical contact with the positive conductive strip 421 and the negative conductive strip 431 in the annular chute 41, realizing the transmission of acoustic wave signals. When the U-shaped block 53 slides to the positive rubber strip 422 and the negative rubber strip 432, since the positive rubber strip 422 and the negative rubber strip 432 are insulating, the positive conductive block 531 and the negative conductive block 532 on the U-shaped block 53 will temporarily disconnect the electrical contact with the positive conductive strip 421 and the negative conductive strip 431, and there is no signal transmission at this time. Then the U-shaped block 53 continues to slide and makes electrical contact with the next pair of positive conductive strip 421 and negative conductive strip 431 again, resuming the transmission of acoustic wave signals. Such a cycle is carried out, so as to realize the continuous and intermittent transmission of acoustic wave signals to the input end of the filter, and the performance of the filter under different frequencies and different contact conditions can be evaluated more comprehensively, providing important data support for the optimization and improvement of the filter.

[0078] A support spring 54 is arranged between one end of the U-shaped block 53背离 the annular chute 41 and the support frame 52. The function of the support spring 54 is to provide a stable contact pressure for the U-shaped block 53 to ensure good contact between the U-shaped block 53 and the positive conductive ring 42 and the negative conductive ring 43 in the annular chute 41.

[0079] When testing the filter, first, the positive conductive block 531 and the negative conductive block 532 need to be electrically connected to the positive input terminal and the negative input terminal of the filter through a wire (not shown in the figure), so as to realize the transmission of acoustic wave signals.

[0080] Continue to refer to Figures 7 to 9 , where the detecting member 5 further includes a receiving hole 55 opened at the bottom of the support frame 52. The connecting cylinder 2 will drive the support frame 52 to rotate around the axis of the connecting cylinder 2 together through the support rod 51, and drive the U-shaped block 53 to rotate together through the support frame 52. At this time, the support frame 52 will drive the sliding support block 56 slidably arranged in the receiving hole 55 to rotate around the axis of the connecting cylinder 2 together. The sliding support block 56 is provided with a protruding portion 561 located at the positive energized ring 44 and the negative energized ring 45 and is slidably connected to the annular chute 41. Positive energized blocks 562 and negative energized blocks 563 are respectively arranged at both ends of the sliding support block 56 where the protruding portion 561 is located.

[0081] The positive energizing block 562 and the negative energizing block 563 will rotate with the support frame 52. During this process, the positive energizing block 562 and the negative energizing block 563 are respectively in contact with the positive energizing ring 44 and the negative energizing ring 45 to achieve electrical connection. When the positive energizing block 562 and the negative energizing block move to the positive insulating strip 443 and the negative insulating strip 453, since the positive insulating strip 443 and the negative insulating strip 453 are insulating, the positive energizing block 562 and the negative energizing block 563 on the sliding support block 56 will temporarily disconnect the electrical contact with the positive energizing strip 441 and the negative energizing strip 451 or the positive pulse strip 442 and the negative pulse strip 452. At this time, no positive and negative power is transmitted to the positive power supply terminal and the negative power supply terminal of the filter.

[0082] After that, the sliding support block 56 continues to move, makes electrical contact with the next pair of positive energizing block 562 and negative energizing block 563, so that the positive and negative power is transmitted to the positive power supply terminal and the negative power supply terminal of the filter. Then the sliding support block 56 continues to move and moves to the positive insulating strip 443 and the negative insulating strip 453 again. The positive energizing block 562 and the negative energizing block 563 will again temporarily disconnect the electrical contact with the positive energizing strip 441 and the negative energizing strip 451 or the positive pulse strip 442 and the negative pulse strip 452. At this time, no positive and negative power is transmitted to the positive power supply terminal and the negative power supply terminal of the filter.

[0083] Then, the sliding support block 56 continues to move, makes electrical contact with the next pair of positive pulse strip 442 and negative pulse strip 452, and transmits the power pulse to the positive power supply terminal and the negative power supply terminal of the filter to simulate power fluctuations and pulse conditions, evaluate the performance of the filter under extreme working conditions, and ensure its stable operation under various conditions. After that, the sliding support block 56 continues to move and contacts the positive insulating strip 443 and the negative insulating strip 453; this cycle is repeated, so as to realize the continuous intermittent transmission of acoustic signals at the input end of the filter, and can more comprehensively evaluate the performance of the filter under different frequencies and different contact conditions, providing important data support for the optimization and improvement of the filter.

[0084] A communication hole 57 communicating with the accommodation hole 55 is jointly opened between the C-shaped block 53 and the support frame 52. One end of the sliding support block 56 facing away from the annular sliding groove 41 is provided with a contact spring 58 through the communication hole 57. The contact spring 58 provides pressure for the sliding support block 56 to ensure that it always remains in contact with the positive energizing ring 44 and the negative energizing ring 45 in the annular sliding groove 41 during rotation, and can still maintain contact even when encountering the positive insulating strip 443 and the negative insulating strip 453 during rotation, ensuring the continuity of the positive and negative power and the power pulse.

[0085] When testing the filter, first, the positive energizing block 562 and the negative energizing block 563 need to be electrically connected to the positive power supply terminal and the negative power supply terminal of the filter through wires (not shown in the figure), so as to realize the transmission of positive and negative power and power pulses.

[0086] Refer to Fig.10and Fig.11 Specifically, the driving member 8 includes a driving gear ring 81 arranged at the bottom of the connecting tube 2, and a driving motor 82 is arranged at the bottom of the supporting tube 1 through a bracket. By starting the driving motor 82, the driving motor 82 will drive the driving gear 83 arranged at its driving end to rotate, and the rotating driving gear 83 will drive the connecting tube 2 by meshing with the driving gear ring 81, thereby driving the connecting tube 2 to rotate in the supporting tube 1.

[0087] Embodiment 2:

[0088] Reference Fig.12 and Fig.13 , based on the first embodiment,

[0089] The positive conductive ring 42 and the negative conductive ring 43 are rotationally connected to the annular slide groove 41. Matching gear rings 6 are provided on opposite sides of the positive conductive ring 42 and the negative conductive ring 43. A matching gear 61 meshing with the matching gear ring 6 is rotatably provided in the support tube 1 through a bracket.

[0090] When the driving motor 82 drives the connecting tube 2 to rotate, the connecting tube 2 will drive the arc-shaped rack 62 set on the connecting tube 2 through the bracket to rotate around the axis of the connecting tube 2. During each rotation of the connecting tube 2, the connecting tube 2 will drive the arc-shaped rack 62 to rotate together. The rotating arc-shaped rack 62 will rotate the matching gear 61 through engagement with the matching gear 61. The rotating matching gear 61 will drive the matching toothed disc to rotate in the opposite direction to the connecting tube 2 through engagement, and the two matching toothed discs will drive the positive conductive ring 42 and the negative conductive ring 43 to rotate in the annular groove 41.

[0091] That is to say, every time the connecting tube 2 rotates one circle, it will drive the arc-shaped rack 62 to rotate, so that the matching gear 61 drives the two arc-shaped racks 62 to drive the positive conductive ring 42 and the negative conductive ring 43 to rotate a distance of the positive conductive strip 421 plus the positive rubber strip 422 or the negative conductive strip 431 plus the negative rubber strip 432. Since each pair of positive power-on strips 441 and negative power-on strips 451 will output positive and negative power supplies with different voltage resistances, and each pair of positive pulse strips 442 and negative pulse strips 452 will output power pulses of different frequencies, each pair of positive conductive strips 421 and negative conductive strips 431 will output sound wave signals of different frequencies.

[0092] Each time the positive conductive ring 42 and the negative conductive ring 43 rotate, the ratio between different positive and negative power supplies and power pulses and acoustic signals of different frequencies will be changed, thereby realizing a dynamic test environment, allowing the filter to be tested under constantly changing power supply conditions and signal frequencies. This can not only evaluate the performance of the filter under normal working conditions, but also test its stability and reliability under extreme conditions. By changing the rotation of the positive conductive ring 42 and the negative conductive ring 43, various working scenarios that the filter may encounter in actual applications can be simulated.

[0093] Embodiment three:

[0094] Reference Fig.10 and Fig.11 , based on the first and second embodiments,

[0095] During the rotation of the connecting tube 2, the connecting tube 2 will drive the vibrator 7 set at the bottom of the supporting tube 1. The vibrator 7 generates a vibration effect on the basis of a dynamic test environment through the combination of an eccentric disk 74 and an eccentric ring 75, thereby providing a vibration environment for the filter, thereby evaluating the performance of the filter under vibration conditions during the test.

[0096] Specifically, the vibrator 7 includes a vibration rod 71. The chassis 3 is rotatably and slidably arranged in the connecting tube 2. The lower end of the chassis 3 is provided with the vibration rod 71. The lower end of the vibration rod 71 slides through the bottom of the connecting tube 2 and is provided with a connecting seat 72.

[0097] By using the existing driving technology, the driving shaft 73 set at the bottom of the connecting tube 2 is driven to rotate through the bracket, so that the driving shaft 73 is rotated. The rotating driving shaft 73 will drive the eccentric disk 74 set on the driving shaft 73 to rotate together. The center of the eccentric disk 74 does not coincide with the center of the driving shaft 73. Due to the eccentric characteristics of the eccentric disk 74, the eccentric ring 75 will move along a circular trajectory, thereby generating eccentric motion during rotation.

[0098] An eccentric ring 75 rotatably connected to the connecting seat 72 is rotatably provided on the eccentric disk 74. The eccentric ring 75 and the connecting seat 72 are rotatably connected to ensure that the eccentric movement of the eccentric disk 74 can be transmitted to the connecting seat 72. The connecting seat 72 will drive the chassis 3 to vibrate up and down continuously in the connecting tube 2 through the vibration rod 71, and drive the filter to move and vibrate through the vibration of the chassis 3, thereby providing a vibration environment for the filter and simulating the vibration conditions that the filter may encounter in actual applications.

[0099] The connecting seat 72 is rotationally connected to the vibration rod 71, and a spiral groove 76 is provided on the vibration rod 71 to cooperate with the support tube 1. When the vibration rod 71 moves up and down, the vibration rod 71 cooperates with the support tube 1 through the spiral groove 76. The spiral shape of the spiral groove 76 makes the vibration rod 71 rotate along the axial direction of the support tube 1, and reciprocates up and down with the vibration rod 71, and drives the chassis 3 to reciprocate in the support connecting tube 2, thereby adding a reciprocating vibration effect on the basis of the up and down vibration, thereby further improving the vibration effect.

[0100] Embodiment 4:

[0101] Reference Fig.14 and Fig.15 , based on the third embodiment,

[0102] The driving member 8 also includes a transmission internal gear ring 84 rotatably arranged at the bottom of the support plate. When the driving motor 82 is started, the driving motor 82 will drive the driving gear 83 arranged at its driving end to rotate. The rotating driving gear 83 will drive the connecting cylinder 2 by meshing with the driving gear ring 81, thereby driving the connecting cylinder 2 to rotate in the supporting cylinder 1.

[0103] The rotating driving gear 83 will drive the transmission inner gear ring 84 to rotate in the opposite direction to the connecting tube 2 through meshing, and the transmission inner gear will drive the driving bevel gear ring 85 set on it through the bracket to rotate together. The driving bevel gear ring 85 meshes with the driving bevel gear 86 set on the driving shaft 73, thereby driving the driving shaft 73 to rotate, thereby driving the driving shaft 73 to drive the eccentric disk 74 to rotate, thereby achieving a vibration effect.

[0104] At the same time, the driving shaft 73 will rotate together with the connecting tube 2 and rotate in the opposite direction to the driving bevel gear ring 85, thereby increasing the rotation speed of the driving shaft 73 to increase the vibration effect to test the filter performance.

[0105] The implementation principle of the present invention is:

[0106] (1): When testing the filter, first fix the filter on the chassis 3 set in the connecting tube 2, and electrically connect the positive conductive block 531 and the negative conductive block 532 to the positive input terminal and the negative input terminal of the filter through wires, so as to realize the transmission of the sound wave signal. At the same time, the positive power block 562 and the negative power block 563 are electrically connected to the positive and negative power poles of the filter through wires, so as to realize the transmission of positive and negative power and power pulses.

[0107] (2): Then start the driving member 8, which will drive the connecting tube 2 to rotate. The rotating connecting tube 2 will drive the detecting member 5 to rotate together. The detecting member 5 will rotate in the annular groove 41 around the axis of the connecting tube 2 through the rotation connection with the annular groove 41.

[0108] (3): During the rotation of the detection member 5, the detection member 5 will contact the positive conductive ring 42 formed by connecting a plurality of positive conductive strips 421 through the positive rubber strip 422, and the negative conductive ring 43 formed by connecting a plurality of negative conductive strips 431 through the negative rubber strip 432. The detection member 5 will receive the sound wave signal output by a pair of positive conductive strips 421 and negative conductive strips 431 in contact with it, and transmit the received sound wave signal to the filter input end through electrical connection, and then detect whether the sound wave output by the filter output end is accurate.

[0109] (4): At the same time, during the rotation of the detection member 5, the detection member 5 will contact the positive power ring 44 formed by connecting a plurality of positive power bars 441, positive pulse bars 442 and positive insulating bars 443, and the negative power ring 45 formed by connecting a plurality of negative power bars 451, negative pulse bars 452 and negative insulating bars 453. The detection member will receive the positive and negative power input from a pair of positive power bars 441 and negative power bars 451 in contact with it, and transfer the received positive and negative power to the positive and negative power poles of the filter through electrical connection. Then, the stability of the internal electronic components of the filter when the power supply is constantly changing, and the effect of the filter in filtering ultrasonic waves when the power supply is unstable, are detected.

[0110] (5): Each time the positive conductive ring 42 and the negative conductive ring 43 rotate, the ratio between different positive and negative power supplies and power pulses and acoustic signals of different frequencies will be changed, thereby realizing a dynamic test environment, allowing the filter to be tested under constantly changing power supply conditions and signal frequencies, which can not only evaluate the performance of the filter under normal working conditions.

[0111] (6): During the rotation of the connecting tube 2, the connecting tube 2 will drive the vibrator 7 set at the bottom of the supporting tube 1. The vibrator 7 generates a vibration effect on the basis of a dynamic test environment through the combination of an eccentric disk 74 and an eccentric ring 75, thereby providing a vibration environment for the filter, thereby evaluating the performance of the filter under vibration conditions during the test.

[0112] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter performance testing device based on ultrasound, comprising a support tube (1), characterized in that: A connecting cylinder (2) is rotatably inserted into the support cylinder (1). A chassis (3) is arranged inside the connecting cylinder (2), and a detector (4) is arranged inside the support cylinder (1). The detector (4) includes an annular chute (41) opened inside the support cylinder (1). On both sides inside the annular chute (41), a plurality of pairs of uniformly distributed positive conductive strips (421) and negative conductive strips (431) are symmetrically arranged. Positive rubber strips (422) are arranged between adjacent positive conductive strips (421), and negative rubber strips (432) are arranged between adjacent negative conductive strips (431). The detector (4) further includes a positive conductive ring (42). A plurality of the positive conductive strips (421) are connected through the positive rubber strips (422) to form the positive conductive ring (42), and a plurality of the negative conductive strips (431) are connected through the negative rubber strips (432) to form a negative conductive ring (43). A detection member (5) which is located inside the support cylinder (1) and rotatably connected to the annular chute (41) is arranged on the connecting cylinder (2). The detection member (5) includes a support rod (51) arranged on the support cylinder (1) and located inside the support cylinder (1). One end of the support rod (51) is provided with a support frame (52) rotatably connected to the annular chute (41). A U-shaped block (53) is slidably arranged inside the support frame (52). Positive conductive blocks (531) and negative conductive blocks (532) corresponding to the positive conductive ring (42) and the negative conductive ring (43) are respectively arranged at both ends of the U-shaped block (53). A support spring (54) is arranged between one end of the U-shaped block (53) facing away from the annular chute (41) and the support frame (52). Each pair of positive conductive strips (421) and negative conductive strips (431) outputs acoustic signals of different frequencies, and each pair of conductive strips is connected to an ultrasonic generator.

2. The ultrasonic filter performance testing device according to claim 1, characterized in that: A plurality of pairs of uniformly distributed positive power-on strips (441) and negative power-on strips (451) are arranged at the bottom of the annular chute (41). Positive pulse strips (442) are arranged inside the annular chute (41) between two adjacent positive power-on strips (441), and negative pulse strips (452) are arranged inside the annular chute (41) between two adjacent negative power-on strips (451).

3. The ultrasonic filter performance testing device according to claim 2, characterized in that: Positive insulating strips (443) are arranged between both sides of the positive pulse strip (442) and the adjacent positive power-on strip (441), and negative insulating strips (453) are arranged between both sides of the negative pulse strip (452) and the adjacent negative power-on strip (451). A plurality of the positive power-on strips (441), positive pulse strips (442) and positive insulating strips (443) are connected to each other to form a positive power-on ring (44), and a plurality of the negative power-on strips (451), negative pulse strips (452) and negative insulating strips (453) are connected to each other to form a negative power-on ring (45).

4. The ultrasonic filter performance testing device according to claim 1, characterized in that: The detection member (5) further includes a receiving hole (55) opened at the bottom of the support frame (52). A sliding support block (56) is slidably arranged inside the receiving hole (55). The sliding support block (56) is provided with a protruding portion (561) located on the positive power-on ring (44) and the negative power-on ring (45). On both ends of the protruding part (561) of the sliding support block (56), a positive power-on block (562) and a negative power-on block (563) that are in contact with the positive power-on ring (44) and the negative power-on ring (45) are respectively arranged. A communication hole (57) communicating with the accommodation hole (55) is jointly opened between the C-shaped block (53) and the support frame (52), and a contact spring (58) is arranged at one end of the sliding support block (56)背离 the annular sliding groove (41) through the communication hole (57).

5. The filter performance testing device based on ultrasonic wave according to claim 1, characterized in that: The positive conductive ring (42) and the negative conductive ring (43) are rotatably connected to the annular sliding groove (41). Matching gear rings (6) are arranged on the opposite sides of the positive conductive ring (42) and the negative conductive ring (43). A matching gear (61) meshing with the matching gear ring (6) is rotatably arranged in the support cylinder (1) through a bracket, and an arc-shaped rack (62) meshing with the matching gear (61) is arranged on the connecting cylinder (2) through a bracket.

6. The ultrasonic filter performance testing device according to claim 1, characterized in that: A vibrator (7) is arranged at the bottom of the support cylinder (1); The vibrator (7) includes a vibration rod (71). The chassis (3) is rotatably and slidably arranged in the connecting cylinder (2). A vibration rod (71) is arranged at the lower end of the chassis (3). The lower end of the vibration rod (71) slidably penetrates through the bottom of the connecting cylinder (2) and then a connecting seat (72) is arranged. A driving shaft (73) is rotatably arranged at the bottom of the connecting cylinder (2) through a bracket. An eccentric disc (74) is arranged on the driving shaft (73). An eccentric ring (75) rotatably connected to the connecting seat (72) is rotatably arranged on the eccentric disc (74).

7. The ultrasonic filter performance testing device according to claim 6, characterized in that: The connecting seat (72) is rotatably connected to the vibration rod (71), and a spiral groove (76) cooperating with the support cylinder (1) is arranged on the vibration rod (71).

8. The ultrasonic filter performance testing device according to claim 1, characterized in that: A driving member (8) is arranged at the bottom of the support cylinder (1); The driving member (8) includes a driving gear ring (81) arranged at the bottom of the connecting cylinder (2). A driving motor (82) is arranged at the bottom of the support cylinder (1) through a bracket. A driving gear (83) meshing with the driving gear ring (81) is arranged at the driving end of the driving motor (82).

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