Automatic adjustment system for acoustic power of transducer

Abstract

The utility model relates to a transducer sound power automatic adjusting system, in the transducer sound power automatic adjusting system, a power source inputs an adjustable input direct current voltage and generates an output voltage with an adjustable duty ratio, and a transducer converts the output voltage of the power source into an output sound wave. The electronic scale measures the sound power of the output sound wave of the transducer, the thermodetector monitors the temperature of the transducer, and the oscilloscope outputs the waveform of the output voltage; the control module automatically adjusts the magnitude of the input direct-current voltage, the duty ratio of the output voltage and the output impedance frequency of the output voltage based on the voltage waveform of the output voltage, the temperature value and the sound power of the output sound wave, and the working efficiency of adjustment is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic adjustment of transducers, in particular to an automatic adjustment system for transducer sound power. Background Art

[0002] The existing transducer sound power test (that is, output power test) basically relies on manual adjustment of the power source input DC voltage, operating frequency, signal duty cycle, and transducer impedance measurement to observe the power source output voltage, output current, sound power, and transducer temperature. That is to say, there are four input variables and four output variables. It is particularly difficult to find the best working point among the eight variables. It is time-consuming and laborious, and it is not certain that the true best working point can be found. In particular, the output changes caused by temperature changes are difficult to record and track, and the adjustment efficiency is low.

[0003] Therefore, it is necessary to provide a transducer sound power automatic adjustment system to solve the above problems. Utility Model Content

[0004] The utility model relates to a transducer sound power automatic adjustment system, which measures the sound power of the output sound wave of the transducer through an electronic scale, detects the connection impedance of the transducer through an impedance meter, monitors the temperature of the transducer through a thermometer, and outputs the waveform of the output voltage through an oscilloscope. The control module automatically adjusts the magnitude of the output voltage, the duty cycle, and the output impedance frequency based on the voltage waveform of the output voltage, the temperature of the transducer, and the sound power of the output sound wave. The index can be adjusted programmatically to determine the optimal value of the input variable, and the transducer finds the optimal working point, which significantly improves the working efficiency of the adjustment. At the same time, using this adjustment method, all indicators can find the law of change of the output variable with time and temperature for a long time until it is stable, and the aging and attenuation of the transducer after long-term work can be tested. It can also comprehensively evaluate whether a new transducer matches the ultrasonic system, which significantly improves the efficiency of the adjustment, and solves the problem of low adjustment efficiency in the prior art due to manually finding the optimal working point between eight variables.

[0005] In order to solve the above problems, the present utility model provides a transducer sound power automatic adjustment system, which comprises:

[0006] A power source for inputting an input DC voltage of adjustable magnitude and generating an output voltage of adjustable duty cycle;

[0007] a transducer for converting the output voltage of the power source into an output sound wave;

[0008] A switching switch, used for switching the transducer to be connected to the impedance meter or the transducer to be connected to the power source; the switching switch is connected to the control module and receives control instructions from the control module;

[0009] An electronic scale for measuring the acoustic power of the output sound wave of the transducer;

[0010] An impedance meter, connected to the transducer via the switch, for detecting the connection impedance of the transducer;

[0011] a thermometer for monitoring the temperature of the transducer;

[0012] an oscilloscope connected to the output of the power source and configured to output the waveform of the output voltage; and

[0013] A control module is respectively connected to the power source, the impedance meter, the thermometer, the electronic scale and the oscilloscope, and is used to automatically adjust the input DC voltage, the duty cycle of the output voltage and the output impedance frequency of the output voltage based on the voltage waveform of the output voltage, the temperature of the transducer and the sound power of the output sound wave.

[0014] The beneficial effects are as follows: the utility model relates to a transducer sound power automatic adjustment system, which includes a power source, a transducer, a switching switch, an electronic scale, an impedance meter, a thermometer, an oscilloscope and a control module. The power source is used to generate an output voltage with adjustable size and adjustable duty cycle. The transducer is used to convert the output voltage of the power source into an output sound wave. The electronic scale measures the sound power of the output sound wave of the transducer, the impedance meter detects the connection impedance of the transducer, the thermometer monitors the temperature of the transducer, and the oscilloscope outputs the waveform of the output voltage. The control module automatically adjusts the size of the input DC voltage, the duty cycle of the output voltage, and the output impedance frequency of the output voltage based on the voltage waveform of the output voltage, the temperature of the transducer, and the sound power of the output sound wave. The indicators can be adjusted programmatically to determine the optimal value of the input variable, and the transducer finds the optimal working point, which significantly improves the working efficiency of the adjustment. At the same time, using this adjustment method, all indicators can find the change pattern of output variables over time and temperature for a long time until they are stable. The aging and attenuation of the transducer after long-term operation can be tested, and whether a new transducer is matched with the ultrasonic system can be comprehensively evaluated. The efficiency of adjustment is significantly improved, and the problem of low adjustment efficiency caused by manually finding the best working point among eight variables in the prior art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.

[0016] Figure 1It is a structural schematic diagram of an embodiment of the transducer sound power automatic adjustment system of the utility model.

[0017] Figure 2 The utility model is a schematic diagram of the process of automatically adjusting the sound power of the transducer sound power automatic adjustment system.

[0018] In the figure: 10. Automatic adjustment system for acoustic power of transducer; 11. Power source; 12. Transducer; 13. Switch; 14. Electronic scale; 15. Impedance meter; 16. Thermometer; 17. Oscilloscope; 18. Control module. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0020] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used for reference to the directions of the drawings. The directional terms used are used to illustrate and understand the present invention, and are not used to limit the present invention.

[0021] In the figures, structurally similar elements are denoted by the same reference numerals.

[0022] Please refer to Figure 1In this embodiment, the transducer sound power automatic adjustment system 10 includes a power source 11, a transducer 12, a switching switch 13, an electronic scale 14, an impedance meter 15, a thermometer 16, an oscilloscope 17 and a control module 18. The power source 11 is used to generate an output voltage with adjustable size and adjustable duty cycle. The transducer 12 is used to convert the output voltage of the power source 11 into an output sound wave. The switching switch 13 switches the transducer 12 to be connected with the impedance meter 15 or the transducer 12 to be connected with the power source 11; the switching switch 13 is connected to the control module 18 and receives a control instruction from the control module 18 to switch the transducer 12 to be connected with the impedance meter 15 or the transducer 12 to be connected with the power source 11. The electronic scale 14 is used to measure the sound power of the output sound wave of the transducer 12. The impedance meter 15 is connected to the transducer 12 through the switching switch 13 to detect the connection impedance of the transducer 12. The thermometer 16 is used to monitor the temperature of the transducer 12. The oscilloscope 17 is connected to the output of the power source 11 and is used to output the waveform of the output voltage. The control module 18 is connected to the power source 11, the impedance meter 15, the temperature meter 16, the electronic scale 14 and the oscilloscope 17 respectively, and is used to automatically adjust the input DC voltage, the duty cycle of the output voltage and the output impedance frequency of the output voltage based on the voltage waveform of the output voltage, the temperature of the transducer 12 and the sound power of the output sound wave.

[0023] The automatic transducer sound power adjustment system 10 relies on the computer interface of the measuring instrument and is controlled by the program of the control module 18. It can automatically adjust the input DC voltage, output voltage, output impedance frequency, signal duty cycle of the power source 11 and automatically measure the impedance of the transducer 12. The system automatically records the input DC voltage, output voltage, sound power of the power source 11 and the temperature value of the transducer 12. It can programmatically input four input variables and find the optimal value of the input variable when the four output variables are satisfied. For example, the optimal efficiency value of the transducer 12 (the ratio of output power to input power), and all indicators can find the change law of the output variable over time and temperature for a long time until it stabilizes. This system can test the aging and attenuation of the transducer 12 after long-term operation, and can also comprehensively evaluate whether a new transducer 12 matches the ultrasonic system.

[0024] In this embodiment, please refer to Figure 2 The method for automatically adjusting the transducer sound power using the above transducer sound power automatic adjustment system 10 comprises:

[0025] Step S1, setting the maximum amplitude of the input DC voltage, the maximum duty cycle of the output voltage, the initial value of the output impedance frequency of the output voltage, the maximum distortion of the output voltage, the minimum power of the output sound wave, and the maximum temperature of the transducer;

[0026] Step S2, determining an initial value of the amplitude of the input DC voltage based on the maximum value of the amplitude of the input DC voltage, and determining an initial value of the duty cycle of the output voltage based on the maximum value of the duty cycle of the output voltage;

[0027] Step S3, setting the input DC voltage and the output voltage based on the initial value of the amplitude and the initial value of the duty cycle, and setting the transducer based on the initial value of the output impedance frequency;

[0028] Step S4: After the power source works for a set time, the distortion of the output voltage is read through an oscilloscope. If the distortion of the output voltage is greater than or equal to the maximum distortion, the process goes to step S5; if the distortion of the output voltage is less than the maximum distortion, the process goes to step S6.

[0029] Step S5, obtaining a preset setting change frequency, adjusting the initial value of the output impedance frequency of the output voltage based on the setting change frequency, and returning to step S4;

[0030] Step S6, reading the acoustic power of the output sound wave by an electronic scale, if the acoustic power of the output sound wave is less than or equal to the minimum power value of the output sound wave, go to step S7; if the acoustic power is greater than the minimum power value of the output sound wave, go to step S8;

[0031] Step S7, obtaining a set voltage increase and a set duty cycle increase, increasing and adjusting the input DC voltage and the output voltage based on the set voltage increase and / or the set duty cycle increase, and returning to step S4;

[0032] Step S8, reading the temperature value of the transducer by a thermometer, if the temperature value is greater than the maximum temperature of the transducer, go to step S9; if the temperature value is less than or equal to the maximum temperature of the transducer, go to step S10;

[0033] Step S9, reducing and adjusting the output voltage by setting the duty cycle increase, and returning to step S4;

[0034] Step S10, the automatic adjustment is completed, and the control module outputs the automatic adjustment result.

[0035] Specifically, in step S1, the maximum amplitude of the input DC voltage, the maximum duty cycle of the output voltage, the initial value of the output impedance frequency of the output voltage, the maximum distortion of the output voltage, the minimum power of the output sound wave, and the maximum temperature of the transducer 12 are pre-set in the control system, so that the system can be programmed to adjust based on preset indicators during operation, so that the efficiency of the transducer 12 is always at the optimal value. The impedance meter 15 is connected to the transducer 12 by switching the switch 13, and then the impedance meter 15 detects the connection impedance of the transducer 12. The control module reads the low point frequency value at the low impedance point in the connection impedance curve of the impedance resistance test, and uses the low impedance point frequency as the initial value of the output impedance frequency of the power source 11. Then, the impedance meter 15 and the transducer 12 are disconnected by switching the switch 13, and the power source 11 and the transducer 12 are connected.

[0036] In this embodiment, the maximum value of the distortion is set to 4.5%-5.5%. The setting change frequency is set to 0.4kHz-0.6kHz. The maximum value of the duty cycle of the output voltage is set to 50%-80%. The maximum value of the temperature of the transducer 12 is set to 68 degrees-72 degrees. The maximum value of the amplitude of the input DC voltage is set to 100V-125V. Among them, after testing, it can be selected to set the maximum value of the distortion to 5%, the setting change frequency to 0.5kHz, and the maximum value of the temperature of the transducer 12 to 70°C.

[0037] In step S2, an initial value of the amplitude of the input DC voltage is determined based on the maximum value of the amplitude of the input DC voltage, and an initial value of the duty cycle of the output voltage is determined based on the maximum value of the duty cycle of the output voltage.

[0038] In this embodiment, the initial value of the amplitude of the input DC voltage is set to 2%-5% of the maximum amplitude of the input DC voltage. The initial value of the duty cycle of the output voltage is set to 10%-20% of the maximum duty cycle of the output voltage. The adjustment range of the output voltage of the power source 11 can be expanded, thereby expanding the range of the output sound wave of the transducer 12, and improving the accuracy of the test and the quality and precision of the evaluation.

[0039] In step S3, the input DC voltage and the output voltage are set based on the initial value of the amplitude and the initial value of the duty cycle, and the transducer is set based on the initial value of the output impedance frequency.

[0040] Specifically, the control module 18 sets the input DC voltage and output voltage of the power source 11 based on the initial amplitude value and the initial duty cycle value obtained in step S2 , and the control module 18 can directly set the transducer 12 according to the initial output impedance frequency value obtained in step S1 .

[0041] At this point, the preliminary preparations have been completed and the next step is testing.

[0042] In step S4, after the power source 11 works for a set time, the distortion of the output voltage is read through the oscilloscope 17. If the distortion of the output voltage is greater than or equal to the maximum distortion value, go to step S5; if the distortion of the output voltage is less than the maximum distortion value, go to step S6.

[0043] After the power source 11 works for a set time according to the output voltage determined in step S3, the oscilloscope 17 reads the distortion of the output voltage, and determines the quality of the output sound wave based on the distortion of the output voltage. The stability of the output voltage and sound power readings of the power source 11 requires a certain amount of time, and the set time is set to 6 seconds. That is, the readings are recorded after stabilization for 6 seconds, instead of recording the values ​​of the output voltage, sound power, etc. at the beginning of operation.

[0044] If the distortion of the output voltage is greater than or equal to the maximum distortion value, the quality of the output sound wave is poor, and measures need to be taken to reduce the distortion of the output voltage, and the process goes to step S5.

[0045] In step S5, a preset setting change frequency is obtained, an initial value of the output impedance frequency of the output voltage is adjusted based on the setting change frequency, and the process returns to step S4.

[0046] The step S5 of adjusting the initial value of the output impedance frequency of the output voltage based on the set change frequency specifically includes:

[0047] The initial value of the output impedance frequency is increased or decreased with the set change frequency to determine the current output impedance frequency (by adjusting the connection impedance of the transducer). If the distortion of the output voltage corresponding to the current output impedance frequency is greater than or equal to the maximum distortion, determine whether the distortion corresponding to the current output impedance frequency is lower than the distortion of the last test. If the distortion corresponding to the current output impedance frequency is lower than the distortion of the last test, the current initial value of the output impedance frequency is adjusted with the set change frequency using the last frequency adjustment direction. If the distortion corresponding to the current output impedance frequency is higher than the distortion of the last test, the reverse direction of the last frequency adjustment is used to adjust the initial value of the output impedance frequency with the set change frequency. If the number of adjustments to the initial value of the output impedance frequency is greater than the set value, an error is reported directly.

[0048] Specifically, based on the initial value of the output impedance frequency, the setting change frequency value is increased or decreased as the output impedance frequency of the new output voltage, and then the power source 11 sets the working time according to the modified indicator to re-acquire the distortion of the output voltage. The first adjustment of the output impedance frequency will result in two situations: an increase or decrease in distortion. Therefore, it is necessary to compare the distortion corresponding to the current output impedance frequency with the distortion of the last test to determine whether the distortion corresponding to the current output impedance frequency is lower than the distortion of the last test. If the distortion corresponding to the current output impedance frequency is lower than the distortion of the last test, the frequency adjustment direction of the last test is used to adjust the initial value of the current output impedance frequency by setting the change frequency. If the distortion corresponding to the current output impedance frequency is higher than the distortion of the last test, the reverse direction of the last frequency adjustment direction is used to adjust the initial value of the output impedance frequency by setting the change frequency.

[0049] For example, when the output impedance frequency initial value increases by the set change frequency value as the output impedance frequency of the new output voltage, and the distortion corresponding to the current output impedance frequency is less than the distortion of the last test, the distortion corresponding to the current output impedance frequency is compared with the maximum distortion value. If the current output impedance frequency needs to be adjusted again, the set change frequency value is increased based on the current output impedance frequency as the output impedance frequency of the new output voltage, and the test is performed again until the distortion of the output voltage is less than the maximum distortion value. Go to step S6.

[0050] When the output impedance frequency initial value increases by the set change frequency value as the output impedance frequency of the new output voltage, and the distortion corresponding to the current output impedance frequency is greater than the distortion of the last test, the output impedance frequency initial value is reduced by the set change frequency value as the current output impedance frequency of the new output voltage for testing, and the distortion corresponding to the current output impedance frequency of the new output voltage is compared with the maximum distortion value. If the current output impedance frequency needs to be adjusted again, the output impedance frequency of the new output voltage is tested again based on the current output impedance frequency reduced by the set change frequency value until the distortion of the output voltage is less than the maximum distortion value. Go to step S6.

[0051] If the output impedance frequency of the new output voltage is continuously adjusted by increasing or decreasing the set change frequency value based on the initial value of the output impedance frequency, and the tested distortion is always greater than or equal to the maximum value of the distortion, an error is directly reported.

[0052] In step S6, the acoustic power of the output sound wave is read by the electronic scale 14. If the acoustic power of the output sound wave is less than or equal to the minimum power value of the output sound wave, go to step S7; if the acoustic power is greater than the minimum power value of the output sound wave, go to step S8.

[0053] Specifically, after the power source 11 works for a set time, the electronic scale 14 synchronously reads the sound power of the output sound wave, and determines whether the output voltage needs to be adjusted based on the sound power of the output sound wave and the set minimum sound power of the output sound wave. The minimum sound power of the output sound wave is set to 500W.

[0054] When the sound power of the output sound wave is less than or equal to the minimum power value of the output sound wave, go to step S7.

[0055] In step S7, the set voltage increase and the set duty cycle increase are obtained, and the input DC voltage and the output voltage are increased and adjusted based on the set voltage increase and / or the set duty cycle increase, and the process returns to step S4. The set voltage increase is set to 2V-5V, and the set duty cycle increase is set to 3%-5%.

[0056] Wherein, step S7 specifically includes:

[0057] Step S71, the control module 18 reads the current amplitude of the input DC voltage. If the current amplitude of the input DC voltage is less than or equal to the maximum amplitude of the input DC voltage, the process goes to step S72; if the current amplitude of the input DC voltage is greater than the maximum amplitude of the input DC voltage, the process goes to step S73;

[0058] Step S72, increasing and adjusting the current amplitude of the input DC voltage based on the set voltage increase, and returning to step S4;

[0059] Step S73, obtain the current duty cycle of the output voltage. If the current duty cycle of the output voltage is greater than the maximum duty cycle of the output voltage, directly prompt to replace the transducer 12; if the current duty cycle of the output voltage is less than or equal to the maximum duty cycle of the output voltage, increase the current duty cycle of the output voltage based on the set duty cycle increase, and return to step S4.

[0060] After the power source 11 works for a set time (6 seconds), the control module 18 reads the current amplitude of the input DC voltage and compares the current amplitude to find that it is smaller than the maximum amplitude of the input DC voltage.

[0061] When the current amplitude of the input DC voltage is less than or equal to the maximum amplitude of the input DC voltage, the current amplitude of the input DC voltage is increased and adjusted based on the set voltage increase. That is, the current amplitude of the input DC voltage plus the value of the set voltage increase is used as the new input DC voltage, and the process returns to step S4 to work again and measure the distortion of the output voltage, the sound power of the output sound wave, and the current amplitude of the input DC voltage until the current amplitude of the input DC voltage is greater than the maximum amplitude of the input DC voltage. Among them, the current amplitude of the input DC voltage is increased and adjusted based on the current amplitude of the input DC voltage read last time plus the set voltage increase.

[0062] When the current amplitude of the input DC voltage is greater than the maximum amplitude of the input DC voltage, the current duty cycle of the output voltage is compared with the maximum duty cycle of the output voltage. If the current duty cycle of the output voltage is greater than the maximum duty cycle of the output voltage, it is directly prompted to replace the transducer 12. After replacing the transducer 12, the test work is terminated or the test operation of the new transducer 12 is restarted according to step S1.

[0063] The current duty cycle of the output voltage is less than or equal to the maximum duty cycle of the output voltage, and the current duty cycle of the output voltage is increased and adjusted based on the set duty cycle increase. That is, the current duty cycle of the output voltage plus the set duty cycle increase is used as the current duty cycle of the output voltage in a new round to update the output voltage. Returning to step S4, the power source 11 obtains the current duty cycle of the updated output voltage based on the updated output voltage working setting time and compares it with the maximum duty cycle of the output voltage until the sound power of the output sound wave is greater than the minimum power of the output sound wave, and then goes to step S8. Among them, the current duty cycle of the output voltage is increased and adjusted based on the current duty cycle of the output voltage read last time plus the set duty cycle increase.

[0064] In step S8, the temperature value of the transducer 12 is read by the thermometer 16. If the temperature value is greater than the maximum temperature of the transducer 12, go to step S9; if the temperature value is less than or equal to the maximum temperature of the transducer 12, go to step S10.

[0065] The power source 11 sets the working time based on the above-mentioned indicators that meet the requirements, and the thermometer 16 simultaneously records the temperature value of the transducer 12, compares the temperature value of the transducer 12 with the set maximum temperature, and determines whether the output voltage needs to be adjusted to optimize the efficiency of the transducer 12.

[0066] When the temperature value of the transducer 12 is greater than the maximum temperature, the process goes to step S9.

[0067] In step S9, the output voltage is adjusted to decrease by setting the duty cycle increase, and the process returns to step S4.

[0068] The current duty cycle of the output voltage minus the set duty cycle increase is used as the current duty cycle of the output voltage of the new round to adjust the output voltage. Returning to step S4, the power source 11 works for the set time based on the adjusted output voltage, and the thermometer 16 obtains the adjusted temperature value of the transducer 12 until the temperature value of the transducer 12 is less than or equal to the set maximum temperature, and then goes to step S10. Among them, the current duty cycle of the output voltage is reduced and adjusted based on the current amplitude of the output voltage read last time minus the duty cycle increase.

[0069] In step S10, the automatic adjustment is completed, and the control module 18 outputs the automatic adjustment result. The output adjustment result report includes the input DC voltage, the duty cycle of the output voltage, the output impedance frequency, the output voltage, the temperature value, the sound power, and the distortion of the output voltage. At this point, the entire test process ends.

[0070] In this embodiment, the utility model relates to a transducer sound power automatic adjustment system, which includes a power source, a transducer, a switching switch, an electronic scale, an impedance meter, a thermometer, an oscilloscope and a control module. The power source is used to generate an output voltage with adjustable size and adjustable duty cycle. The transducer is used to convert the output voltage of the power source into an output sound wave. The switching switch is used to switch the transducer to be connected to the impedance meter or the transducer to be connected to the power source. The electronic scale measures the sound power of the output sound wave of the transducer. The impedance meter is connected to the transducer through the switching switch and is used to detect the connection impedance of the transducer. The thermometer monitors the temperature of the transducer. The oscilloscope outputs the waveform of the output voltage. The control module automatically adjusts the size of the input DC voltage, the duty cycle of the output voltage and the output impedance frequency of the output voltage based on the voltage waveform distortion of the output voltage, the temperature of the transducer and the sound power of the output sound wave. The index can be adjusted programmatically to determine the optimal value of the input variable, and the transducer finds the optimal working point, which significantly improves the working efficiency of the adjustment. At the same time, using this adjustment method, all indicators can find the change pattern of output variables over time and temperature for a long time until they are stable. The aging and attenuation of the transducer after long-term operation can be tested, and whether a new transducer is matched with the ultrasonic system can be comprehensively evaluated. The efficiency of adjustment is significantly improved, and the problem of low adjustment efficiency caused by manually finding the best working point among eight variables in the prior art is solved.

[0071] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A transducer sound power automatic adjustment system, characterized in that: include: A power source for inputting an input DC voltage of adjustable magnitude and generating an output voltage of adjustable duty cycle; a transducer for converting the output voltage of the power source into an output sound wave; A switching switch, used for switching the transducer to be connected to the impedance meter or the transducer to be connected to the power source; the switching switch is connected to the control module and receives control instructions from the control module; An electronic scale for measuring the acoustic power of the output sound wave of the transducer; An impedance meter, connected to the transducer via the switch, for detecting the connection impedance of the transducer; a thermometer for monitoring the temperature of the transducer; an oscilloscope, connected to the output of the power source, and configured to output the waveform of the output voltage; as well as, A control module is respectively connected to the power source, the impedance meter, the thermometer, the electronic scale and the oscilloscope, and is used to automatically adjust the input DC voltage, the duty cycle of the output voltage and the output impedance frequency of the output voltage based on the voltage waveform of the output voltage, the temperature of the transducer and the sound power of the output sound wave.

2. The transducer sound power automatic adjustment system according to claim 1, characterized in that: The maximum temperature of the transducer is set to 68 degrees to 72 degrees.

3. The transducer sound power automatic adjustment system according to claim 1, characterized in that: The maximum amplitude of the input DC voltage is 100V-125V.

4. The transducer sound power automatic adjustment system according to claim 3, characterized in that: The initial amplitude of the input DC voltage is 2%-5% of the maximum amplitude of the input DC voltage.

5. The transducer sound power automatic adjustment system according to claim 3, characterized in that: The control module adjusts the input DC voltage by a single amplitude of 2V-5V.

6. The transducer sound power automatic adjustment system according to claim 1, characterized in that: The maximum duty cycle of the output voltage is 50%-80%.

7. The transducer sound power automatic adjustment system according to claim 6, characterized in that: The initial duty cycle of the output voltage is 10%-20% of the maximum duty cycle of the output voltage.

8. The transducer sound power automatic adjustment system according to claim 6, characterized in that: The control module adjusts the single duty cycle of the output voltage by 3%-5%.

9. The transducer sound power automatic adjustment system according to claim 1, characterized in that: The maximum distortion of the output voltage is 4.5%-5.5%.

10. The transducer sound power automatic adjustment system according to claim 1, characterized in that: The single adjustment amount of the output impedance frequency of the output voltage is 0.4kHz-0.6kHz.

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