A power source device test system and method

Abstract

The application provides a power sound source equipment test system and method, wherein the power sound source equipment test system is connected with a power sound source equipment, and the power sound source equipment test system comprises a detection sampling module, a waveform sampling module, a signal sampling and holding module and a control module. The application collects sound source signals of the power sound source equipment through the detection sampling module and respectively feeds back the sound source signals to the waveform sampling module and the signal sampling and holding module. The waveform sampling module outputs waveform signals to the control module according to the sound source signals. The signal sampling and holding module outputs current signals to the control module according to the sound source signals. The control module obtains audio waveform information and current information according to the waveform signals and the current signals, and judges whether the sound source frequency and the sound source power are qualified according to the audio waveform information and the current information. Thus, the application not only realizes accurate definition of the sound source frequency and the sound source power, but also avoids damage to the hearing of the test personnel caused by the high-power sound source.

Description

Technical Field

[0001] This invention relates to the field of power audio source testing technology, and more particularly to a power audio source device testing system and method. Background Technology

[0002] The testing and inspection of high-power audio source devices, such as burglar alarms, car alarms, police siren sounds, and motorcycle alarms, are currently still conducted manually, with the sound heard by the testers serving as the standard for judgment.

[0003] However, due to the subjective nature of sound resolution, deviations in the frequency and power of the sound source cannot be accurately defined, leading to misjudgments. Furthermore, for some prototypes with high-power sound sources, noisy, high-power sound sources can damage the hearing of testers.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a power audio source device testing system and method to solve the problems of inaccurate definition of the frequency and power deviation of the audio source, which leads to misjudgment, and the damage to the hearing of testers caused by noisy high-power audio sources, which are the result of manual testing of existing power audio source products.

[0006] The technical solution of the present invention is as follows:

[0007] A power audio source device testing system, connected to a power audio source device, includes: a detection sampling module, a waveform sampling module, a signal sampling and holding module, and a control module; wherein...

[0008] The detection sampling module is connected to the power audio source device, the waveform sampling module and the signal sampling and holding module respectively, and is used to collect the audio source signal of the power audio source device and input it to the waveform sampling module and the signal sampling and holding module respectively;

[0009] The waveform sampling module is connected to both the detection sampling module and the control module, and is used to output a waveform signal to the control module based on the sound source signal.

[0010] The signal sampling and holding module is connected to the detection sampling module and the control module respectively, and is used to output a current signal to the control module according to the sound source signal and the control signal output by the control module;

[0011] The control module is connected to the waveform sampling module and the signal sampling and holding module respectively. It is used to obtain audio waveform information based on the waveform signal and to determine whether the sound source frequency is qualified based on the audio waveform information. It is also used to obtain current information based on the current signal and to determine whether the sound source power is qualified based on the current information.

[0012] In a further embodiment of the present invention, the power audio source device testing system further includes: a display module;

[0013] The display module is connected to the control module, and the display module is used to display the test data of the control module.

[0014] In a further embodiment of the present invention, the power audio source device testing system further includes: a controllable DC power supply.

[0015] The controllable DC power supply is connected to both the control module and the power audio source device, and is used to provide test voltage to the power audio source device.

[0016] In a further embodiment of the present invention, the power audio source device testing system further includes: a button module;

[0017] The button module is connected to the control module and is used to control whether the test is started.

[0018] In a further embodiment of the present invention, the power audio source device testing system further includes: a computer interface;

[0019] The computer interface is connected to both the control module and the computer, and is used to control whether the test is started and to upload the test data to the computer.

[0020] In a further embodiment of the present invention, the waveform sampling module includes: a first filtering unit, a constant voltage output unit, and a first comparator; wherein,

[0021] The first filtering unit is connected to the first comparator and the detection sampling module respectively, and is used to receive the sound source signal and input the sound source signal to the first comparator after filtering the sound source signal.

[0022] The constant voltage output unit is connected to the first comparator and is used to output a stable voltage signal to the first comparator;

[0023] The first comparator is connected to the first filtering unit, the constant voltage output unit, and the control module, respectively, and is used to output a waveform signal to the control module according to the sound source signal and the stable voltage signal.

[0024] In a further embodiment of the present invention, the first filtering unit includes: a first resistor and a first capacitor; wherein,

[0025] One end of the first resistor is connected to the audio source signal, and the other end of the first resistor is connected to one end of the first capacitor and the non-inverting input terminal of the first comparator.

[0026] The other end of the first capacitor is grounded;

[0027] The constant voltage output unit includes: a second resistor, a third resistor, and a second capacitor; wherein...

[0028] One end of the second resistor is connected to a power signal, and the other end of the second resistor is connected to one end of the third resistor, one end of the second capacitor, and the negative input terminal of the first comparator.

[0029] The other end of the third resistor is grounded;

[0030] The other end of the second capacitor is grounded.

[0031] In a further embodiment of the present invention, the signal sample-and-hold module includes: a switching transistor, a third capacitor, a second filtering unit, and a second comparator; wherein,

[0032] The control terminal of the switching transistor is connected to the control module, the first terminal of the switching transistor is connected to the second filter unit, and the second terminal of the switching transistor is connected to one end of the third capacitor and the non-inverting input terminal of the second comparator, respectively.

[0033] The negative input terminal of the second comparator is connected to the output terminal of the second comparator;

[0034] The output of the second comparator is also connected to the control module;

[0035] The other end of the third capacitor is grounded.

[0036] In a further embodiment of the present invention, the second filtering unit includes: a fourth resistor and a fourth capacitor; wherein,

[0037] One end of the fourth resistor is connected to the audio source signal, and the other end of the fourth resistor is connected to the first end of the switching transistor and one end of the fourth capacitor, respectively.

[0038] The other end of the fourth capacitor is grounded.

[0039] Based on the same inventive concept, the present invention also provides a power audio source device testing method applied to the power audio source device testing system described above, comprising:

[0040] The audio source signal of the power audio source device is acquired by the detection sampling module and fed back to the waveform sampling module and the signal sampling and holding module respectively.

[0041] The waveform sampling module outputs a waveform signal to the control module based on the sound source signal;

[0042] The signal sampling and holding module outputs a current signal to the control module based on the sound source signal and the control signal output by the control module.

[0043] The control module obtains audio waveform information and current information based on the waveform signal and the current signal, and determines whether the sound source frequency and sound source power are qualified based on the audio waveform information and the current information.

[0044] This invention provides a power audio source device testing system and method. The power audio source device testing system is connected to a power audio source device and includes: a detection sampling module, a waveform sampling module, a signal sampling and holding module, and a control module. The detection sampling module is connected to the power audio source device, the waveform sampling module, and the signal sampling module, respectively, and is used to collect the audio source signal of the power audio source device and input it to the waveform sampling module and the signal sampling and holding module. The waveform sampling module is connected to the detection sampling module and the control module, respectively, and is used to output a waveform signal to the control module based on the audio source signal. The signal sampling and holding module is connected to the detection sampling module and the control module, respectively, and is used to output a current signal to the control module based on the audio source signal and the control module. The control module is connected to the waveform sampling module and the signal sampling and holding module, respectively, and is used to obtain audio waveform information based on the waveform signal and determine whether the audio source frequency is qualified based on the audio waveform information; it is also used to obtain current information based on the current signal and determine whether the audio source power is qualified based on the current information. This invention acquires the audio source signal from the audio source device through a detection sampling module and feeds it back to a waveform sampling module and a signal sampling and holding module. The waveform sampling module outputs a waveform signal to the control module based on the audio source signal. The signal sampling and holding module outputs a current signal to the control module based on the audio source signal and the control signal output by the control module. Subsequently, the control module obtains audio waveform information and current information based on the waveform signal and current signal, and determines whether the audio source frequency and power are qualified based on the audio waveform information and current information. In this way, this invention not only achieves accurate definition of audio source frequency and power, but also avoids hearing damage to testers caused by noisy high-power audio sources. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0046] Figure 1 This is a block diagram illustrating the control principle of the power audio source device testing system in this invention.

[0047] Figure 2 This is the circuit schematic diagram of the waveform sampling module in this invention.

[0048] Figure 3 This is a circuit diagram of the signal sample and hold module in this invention.

[0049] Figure 4 This is a flowchart illustrating the power audio source device testing method of this invention.

[0050] The labels in the attached diagram are as follows: 100, power audio source device; 200, detection and acquisition module; 300, waveform sampling module; 310, first filtering unit; 320, constant voltage output unit; 400, signal sampling and holding module; 410, switching transistor; 420, second filtering unit; 500, control module; 600, display module; 700, controllable DC current; 800, button module; 900, computer interface. Detailed Implementation

[0051] This invention provides a power audio source device testing system and method. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0052] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of the present invention involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0053] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0054] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0055] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0056] The inventors discovered that the testing and inspection of high-power audio source products, such as burglar alarms, car alarms, police siren sounds, and motorcycle alarms, currently relies on manual testing, using the sound heard by the tester as the standard for judgment. However, due to the subjective nature of sound resolution, manual testing cannot accurately define deviations in the frequency and power of the audio source, leading to misjudgments. Furthermore, manual testing cannot simultaneously test multiple audio sources, resulting in high labor costs and low efficiency. Moreover, for some high-powered prototypes, noisy high-power audio sources can damage the hearing of testers.

[0057] To address the aforementioned technical problems, this invention provides a power audio source device testing system. Connected to a power audio source device, the system includes a detection sampling module, a waveform sampling module, a signal sampling and holding module, and a control module. The detection sampling module acquires the audio source signal from the device and feeds it back to the waveform sampling module and the signal sampling and holding module. The waveform sampling module outputs a waveform signal to the control module based on the audio source signal. The signal sampling and holding module outputs a current signal to the control module based on the audio source signal and the control signal output by the control module. The control module obtains audio waveform information and current information from the waveform signal and current signal, and determines whether the audio source frequency and power are qualified based on these information. This invention not only achieves accurate definition of the audio source frequency and power, improving testing efficiency and reducing labor costs, but also avoids hearing damage caused by high-power audio sources to test personnel.

[0058] Please also refer to Figures 1 to 3 The present invention provides a preferred embodiment of a power audio source device testing system.

[0059] like Figure 1 As shown, the present invention provides a power audio source device testing system, which is connected to a power audio source device 100. The power audio source device testing system includes: a detection sampling module 200, a waveform sampling module 300, a signal sampling and holding module 400, and a control module 500. The detection sampling module 200 is connected to the power audio source device 100, the waveform sampling module 300, and the signal sampling and holding module 400, respectively. It is used to acquire the audio source signal from the power audio source device 100 and input it to the waveform sampling module 300 and the signal sampling and holding module 400. The waveform sampling module 300 is connected to the detection sampling module 200 and the control module 500, respectively. It is used to output a waveform signal to the control module 500 based on the audio source signal. The signal sampling and holding module 400 is connected to the detection sampling module 200 and the control module 500, respectively. It is used to output a current signal to the control module 500 based on the audio source signal and the control signal output by the control module 500. The control module 500 is connected to the waveform sampling module 300 and the signal sampling and holding module 400, respectively. It is used to obtain audio waveform information based on the waveform signal and determine whether the audio source frequency is qualified based on the audio waveform information. It is also used to obtain current information based on the current signal and determine whether the audio source power is qualified based on the current information.

[0060] Specifically, the detection sampling module 200 can be a detection sampling resistor. The ground wire of the power audio source device 100 is connected to the connection point between the ground wire of the power audio source device test system and the detection sampling resistor through the detection sampling resistor. The detection sampling module 200 collects the audio source signal of the power audio source device through the detection sampling resistor. When the system is working, the detection sampling module 200 collects the audio source signal of the power audio source device 100 and feeds it back to the waveform sampling module 300 and the signal sampling and holding module 400 respectively. The waveform sampling module 300 outputs a waveform signal to the control module 500 based on the audio source signal. The signal sampling and holding module 400 outputs a current signal to the control module 500 based on the audio source signal. The control module 500 obtains audio waveform information and current information based on the waveform signal and the current signal, calculates the deviation value of the sound frequency and power of the power audio source device, uses the provided prototype as a typical value, and judges whether it is operating normally according to the upper and lower limits of the allowable deviation range. If the power deviation value is within the allowable deviation range, the audio frequency and power of the power audio source device are deemed qualified; otherwise, they are deemed unqualified.

[0061] Therefore, the testing system in this invention does not require human hearing to judge during the testing process, and achieves accurate definition of the frequency and power of the sound source. Even if human intervention is required, earplugs can be worn. In this way, this invention avoids damage to the hearing of testers caused by noisy high-power sound sources.

[0062] Furthermore, during the testing of power audio source equipment, one person can independently operate multiple power audio source testing systems as described in this invention. Each power audio source testing system connects to one audio source under test for testing, with each audio source connection time being 30 seconds. The connection or removal time for each audio source under test is 2 seconds. Under the condition of multiple power audio source testing systems operating in parallel, the worker can remove the tested audio source in 2 seconds and replace it with a new audio source under test in another 2 seconds, that is, the test of one audio source can be completed in 4 seconds. Compared with the 34 seconds required to complete the test of one audio source without using multiple power audio source testing systems, this invention enables rapid batch testing and judgment, greatly improving work efficiency and reducing labor costs. In addition, through automatic judgment of test results, it is convenient to upgrade the production line to automation. With the help of related robotic arms, a fully automated unmanned testing workshop can be realized. For example, test data can be uploaded to a PC, so that the test data can be saved sequentially and statistically analyzed, including production batch analysis, production efficiency analysis, and reliability analysis of component replacement, etc.

[0063] Please continue reading. Figure 1In some embodiments, the power audio source device testing system further includes a display module 600, which is connected to the control module 500. The display module 600 is used to display the test data (e.g., the frequency and power of the test power audio source) from the control module 500, and can intuitively show whether the test data (frequency and power) of the test power audio source is qualified, helping testers to clearly understand the current test status. In one implementation, the display module 600 in this embodiment is specifically an OLED display screen.

[0064] Please continue reading. Figure 1 In some embodiments, the power audio source device testing system further includes a controllable DC power supply 700, which is connected to the control module 500 and the power audio source device 100 respectively, and is used to provide a test voltage to the power audio source device 100.

[0065] Specifically, the controllable DC power supply 700 is a programmable DC power supply that can output corresponding test voltages and current limits according to actual needs.

[0066] Please continue reading. Figure 1 In a further embodiment of one example, the power audio source device testing system further includes a button module 800, which is connected to the control module 500 and is used to control whether the power audio source testing system starts testing.

[0067] Specifically, the button module 800 can be a power button or other function button, which can control whether to perform a test.

[0068] Please continue reading. Figure 1 In a further embodiment of one example, the power audio source device testing system further includes a computer interface 900, which is connected to the control module 500 and the computer respectively, for controlling whether the test is started and for uploading test data to the computer.

[0069] Specifically, the control module 500 connects to a computer via the computer interface 900, allowing for convenient storage of data (test verification and test data) in the cloud. The computer can be a computer, mobile phone, or other electronic access device, enabling enterprise managers to remotely monitor and automate production. In one implementation, the computer interface 900 can be an RS-232 serial port module.

[0070] Please see Figure 2In a further embodiment of one example, the waveform sampling module 300 includes: a first filtering unit 310, a constant voltage output unit 320, and a first comparator U1. The first filtering unit 310 is connected to both the first comparator U1 and the detection sampling module 200, and is used to receive an audio source signal, filter the audio source signal, and then input it to the first comparator U1. The constant voltage output unit 320 is connected to the first comparator U1 and is used to output a stable voltage signal to the first comparator U1. The first comparator U1 is connected to the first filtering unit 310, the constant voltage output unit 320, and the control module 500, and is used to output a waveform signal to the control module 500 based on the audio source signal and the stable voltage signal.

[0071] Specifically, the first filtering unit 310 includes a first resistor R1 and a first capacitor C1. One end of the first resistor R1 is connected to the audio source signal, and the other end of the first resistor R1 is connected to one end of the first capacitor C1 and the non-inverting input terminal V+ of the first comparator U1. The other end of the first capacitor C1 is grounded. The audio source signal output by the power audio source device 100 is collected by the detection and sampling module 200 and connected to the first filtering unit 310 to output the sampling signal. The first resistor R1 and the first capacitor C1 in the first filtering unit 310 work together to filter out the noise in the sampling signal and output a stable audio source signal to the non-inverting input terminal V+ of the first comparator U1.

[0072] Specifically, the constant voltage output unit 320 includes a second resistor R2, a third resistor R3, and a second capacitor C2. One end of the second resistor R2 is connected to the power signal VCC, and the other end of the second resistor R2 is connected to one end of the third resistor R3, one end of the second capacitor C2, and the negative input terminal V- of the first comparator U1. The other end of the third resistor R3 and the other end of the second capacitor C2 are grounded. A stable voltage point is formed between the second resistor R2, the third resistor R3, and the second capacitor C2, and a stable voltage signal is output to the negative input terminal V- of the first comparator U1. Through the characteristics of the comparator, the sampled signal is converted into a waveform signal of the magnitude of the VCC voltage and output to the control module 500. The control module 500 calculates the relationship between the sound spectrum and time of the power audio source device 100 based on the waveform signal, which is the audio waveform information. In this way, the present invention can obtain the sound frequency within a certain period of time by capturing the sound source, and then determine whether the frequency of the power audio source is qualified by comparing it with the allowable deviation range.

[0073] Please see Figure 3In a further embodiment of one example, the signal sample-and-hold module 400 includes: a switching transistor 410, a third capacitor C3, a second filtering unit 420, and a second comparator U2. The control terminal of the switching transistor 410 is connected to the control module 500. The first terminal of the switching transistor 410 is connected to the second filtering unit 420. The second terminal of the switching transistor 410 is connected to one end of the third capacitor and the positive input terminal V+ of the second comparator U2. The negative input terminal V- of the second comparator U2 is connected to the output terminal OUT of the second comparator U2, and the output terminal OUT of the second comparator U2 is also connected to the control module 500. The other end of the third capacitor is grounded.

[0074] Specifically, the second filtering unit 420 includes a fourth resistor R4 and a fourth capacitor C4. One end of the fourth resistor R4 is connected to the audio source signal, and the other end of the fourth resistor R4 is connected to the first terminal of the switching transistor 410 and one end of the fourth capacitor C4, respectively. The other end of the fourth capacitor C4 is grounded. The audio source signal output by the power audio source device 100 is acquired by the detection sampling module 200 and connected to the second filtering unit 420 to output a sampling signal. The fourth resistor R4 and the fourth capacitor C4 in the second filtering unit 420 work together to filter and output a stable audio source signal, which is then connected to the non-inverting input terminal V+ of the second comparator U2 via the switching transistor 410. It should be noted that the audio source signals connected to the waveform sampling module and the signal sample-and-hold module are sampling signals from the same sampling point to ensure that the same segment of the audio source signal output by the power audio source device is sampled.

[0075] In specific implementation, the control module 500 outputs a sample-and-hold control signal to the control terminal of the switching transistor 410. When the switching transistor 410 is turned on, the third capacitor C3 stores charge. After a settable delay time (preferably 10µs to 200µs depending on the sound characteristics), ensuring the power-on signal of the third capacitor C3 is stable, the switching transistor 410 is turned off. The third capacitor outputs the audio signal to the positive input terminal V+ of the second comparator U2, while the negative input terminal V- of the second comparator U2 is connected to the output terminal OUT of the second comparator U2. Therefore, a stable DC current signal can be obtained, which is output to the control module 500. The control module 500 converts the current signal into current information via a high-precision ADC and compares the current information with the allowable deviation range to determine whether the power of the audio signal is qualified. In addition, the switching transistor 410 in this embodiment is a CD4051 multi-channel analog switch chip. Of course, chips with the same function can also be selected, and this invention does not limit this.

[0076] Please see Figure 4 In some embodiments, the present invention also provides a power audio source device testing method applied to the above-described power audio source device testing system, which includes the following steps:

[0077] S100: The sound source signal of the power sound source device is acquired by the detection sampling module and fed back to the waveform sampling module and the signal sampling and holding module respectively; as described in an embodiment of a power sound source device testing system, which will not be repeated here.

[0078] S200, the waveform sampling module outputs a waveform signal to the control module according to the sound source signal; as described in an embodiment of a power sound source device testing system, which will not be repeated here.

[0079] S300, the signal sampling and holding module outputs a current signal to the control module according to the sound source signal; as described in an embodiment of a power sound source device testing system, which will not be repeated here.

[0080] S400: The control module obtains audio waveform information and current information based on the waveform signal and the current signal, and determines whether the sound source frequency and sound source power are qualified based on the audio waveform information and the current information. This is specifically described in an embodiment of a power audio source device testing system, and will not be repeated here.

[0081] In summary, the power audio source device testing system and method provided by this invention collects the audio source signal of the power audio source device through a detection sampling module and feeds it back to a waveform sampling module and a signal sampling and holding module. The waveform sampling module outputs a waveform signal to a control module based on the audio source signal, and the signal sampling and holding module outputs a current signal to the control module based on the audio source signal. The control module obtains audio waveform information and current information based on the waveform signal and current signal, and determines whether the audio source frequency and power are qualified based on the audio waveform information and current information. This invention not only achieves accurate definition of audio source frequency and power, improving testing efficiency and reducing labor costs, but also avoids hearing damage to testers caused by high-power audio sources. Secondly, during the power audio source device testing process, one person can operate multiple power audio source testing systems as described in this invention, enabling rapid batch testing and judgment, greatly improving work efficiency and reducing labor costs. Furthermore, the automatic judgment of test results facilitates the automation upgrade of production lines; with the help of related robotic arms, a fully automated unmanned testing workshop can be realized. Furthermore, by connecting to a computer, data can be easily stored in the cloud, enabling data statistics and allowing enterprise managers to remotely monitor and automate production.

[0082] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A power audio source device testing system, connected to a power audio source device, characterized in that, The power audio source testing system includes: a detection sampling module, a waveform sampling module, a signal sampling and holding module, and a control module; wherein... The detection sampling module is connected to the power audio source device, the waveform sampling module, and the signal sampling and holding module respectively. The detection sampling module is a detection sampling resistor. The ground wire of the power audio source device is connected to the connection point between the ground wire of the power audio source device test system and the detection sampling resistor through the detection sampling resistor. The detection sampling module acquires the audio source signal of the power audio source device through the detection sampling resistor. The waveform sampling module is connected to both the detection sampling module and the control module, and is used to output a waveform signal to the control module based on the audio source signal; the waveform sampling module includes: a first filtering unit, a constant voltage output unit, and a first comparator; wherein... The first filtering unit is connected to the first comparator and the detection sampling module respectively, and is used to receive the sound source signal and input the sound source signal to the first comparator after filtering the sound source signal. The constant voltage output unit is connected to the first comparator and is used to output a stable voltage signal to the first comparator; The first comparator is connected to the first filter unit, the constant voltage output unit, and the control module respectively, and is used to output a waveform signal to the control module according to the sound source signal and the stable voltage signal; The signal sample-and-hold module includes: a switching transistor, a third capacitor, a second filtering unit, and a second comparator; wherein... The control terminal of the switching transistor is connected to the control module, the first terminal of the switching transistor is connected to the second filter unit, and the second terminal of the switching transistor is connected to one end of the third capacitor and the non-inverting input terminal of the second comparator, respectively. The negative input terminal of the second comparator is connected to the output terminal of the second comparator; The output of the second comparator is also connected to the control module; The other end of the third capacitor is grounded. The control module is used to output a sample-and-hold control signal to the control terminal of the switching transistor. When the switching transistor is turned on, the third capacitor stores the charge. After a settable delay time, the power-on signal of the third capacitor is stabilized, and the switching transistor is turned off. The third capacitor outputs the audio source signal to the non-inverting input terminal of the second comparator. The signal sampling and holding module is connected to the detection sampling module and the control module respectively, and is used to output a current signal to the control module according to the sound source signal and the control signal output by the control module; The control module is connected to the waveform sampling module and the signal sampling and holding module respectively. It is used to obtain audio waveform information based on the waveform signal and to determine whether the sound source frequency is qualified based on the audio waveform information. It is also used to obtain current information based on the current signal and to determine whether the sound source power is qualified based on the current information.

2. The power audio source device testing system according to claim 1, characterized in that, Also includes: Display module; The display module is connected to the control module, and the display module is used to display the test data of the control module.

3. The power audio source device testing system according to claim 1, characterized in that, Also includes: Controllable DC power supply: The controllable DC power supply is connected to both the control module and the power audio source device, and is used to provide test voltage to the power audio source device.

4. The power audio source device testing system according to claim 1, characterized in that, Also includes: Button module; The button module is connected to the control module and is used to control whether the test is started.

5. The power audio source device testing system according to claim 1, characterized in that, Also includes: Computer interface; The computer interface is connected to both the control module and the computer, and is used to control whether the test is started and to upload the test data to the computer.

6. The power audio source device testing system according to claim 1, characterized in that, The first filter unit includes: a first resistor and a first capacitor; wherein, One end of the first resistor is connected to the audio source signal, and the other end of the first resistor is connected to one end of the first capacitor and the non-inverting input terminal of the first comparator. The other end of the first capacitor is grounded; The constant voltage output unit includes: a second resistor, a third resistor, and a second capacitor; wherein... One end of the second resistor is connected to a power signal, and the other end of the second resistor is connected to one end of the third resistor, one end of the second capacitor, and the negative input terminal of the first comparator. The other end of the third resistor is grounded; The other end of the second capacitor is grounded.

7. The power audio source device testing system according to claim 6, characterized in that, The second filter unit includes: a fourth resistor and a fourth capacitor; wherein, One end of the fourth resistor is connected to the audio source signal, and the other end of the fourth resistor is connected to the first end of the switching transistor and one end of the fourth capacitor, respectively. The other end of the fourth capacitor is grounded.

8. A method for testing a power audio source device applied to the power audio source device testing system according to any one of claims 1-7, characterized in that, include: The audio source signal of the power audio source device is acquired by the detection sampling module and fed back to the waveform sampling module and the signal sampling and holding module respectively. The waveform sampling module outputs a waveform signal to the control module based on the sound source signal; The signal sampling and holding module outputs a current signal to the control module based on the sound source signal and the control signal output by the control module. The control module obtains audio waveform information and current information based on the waveform signal and the current signal, and determines whether the sound source frequency and sound source power are qualified based on the audio waveform information and the current information.

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