A horn open circuit dynamic detection method, device and audio system

Abstract

This invention relates to a method, apparatus, and audio system for dynamic detection of open-circuit speakers. The method includes: pulse-width modulation (PWM) of an audio signal based on the current frequency configuration to generate the current operating frequency signal of the speaker; inputting the current operating frequency signal of the speaker to an LM567 and receiving the detection electrical signal output by the LM567; determining whether the current detection electrical signal matches the speaker open-circuit signal: if not, continuing open-circuit detection; if yes, performing incremental PWM on the audio signal based on the current frequency configuration to generate an updated frequency configuration and the current operating frequency signal of the speaker; and simultaneously determining whether the updated frequency configuration exceeds a preset incremental threshold: if yes, considering the current audio device to have an open circuit; if not, continuing open-circuit detection on the incrementally incremented speaker operating frequency signal. This method effectively improves the accuracy of speaker open-circuit detection.

Description

Technical Field

[0001] This invention relates to the field of audio path detection, and in particular to a method, apparatus, audio system, electronic device, and computer storage medium for dynamic detection of open-circuit speakers. Background Technology

[0002] Open-circuit detection of speakers is a crucial step in ensuring the proper functioning of audio equipment. In practical applications, speakers can malfunction for various reasons, one of which is an open-circuit fault. An open circuit refers to a disconnection in the speaker circuitry, preventing audio signals from being played through the speaker. Furthermore, when an open circuit occurs in a speaker, it can also cause abnormal states in circuits such as audio amplifiers, thereby damaging the audio system or other circuits. Therefore, timely detection and identification of open-circuit conditions in speakers can effectively prevent audio system malfunctions or damage to other circuits.

[0003] In existing audio equipment, the LM567, a general-purpose tone decoder chip, is typically used to detect open circuits in speakers. This is achieved by inputting a fixed frequency pulse to the LM567 and analyzing the high and low levels of pin 8 to determine if the speaker is open-circuited, thus enabling accurate open-circuit fault detection. The LM567 has eight pins: pin 1 is the output filter pin; pin 2 is the loop filter pin; pin 3 is the input pin, used to detect a given phase-locked loop frequency; pin 4 is the positive power supply pin; pin 5 is the timing resistor pin; pin 6 is the timing capacitor pin; pin 7 is the ground pin; and pin 8 is the output pin. For details, please refer to [reference needed]. Figure 1 , Figure 1 This is a simplified structural diagram of the LM567.

[0004] However, in practical applications of the LM567, when the device is affected by environmental factors or interference, such as excessively high or low temperatures, the fixed detection frequency set by the LM567 may change. This phenomenon is commonly referred to as "frequency hopping." In other words, temperature changes can cause the LM567's detection frequency to deviate from its original setting, resulting in the device being unable to accurately determine whether the speaker is functioning properly under these environmental conditions. Therefore, existing technologies using the LM567 for speaker open-circuit detection under certain environmental interference conditions suffer from inaccurate detection. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a method for dynamic detection of open circuit in a horn.

[0006] A method for dynamic detection of open-circuit horn includes the following steps:

[0007] S1. Based on the current frequency configuration, perform pulse width modulation on the feedback signal of the speaker to generate the current operating frequency signal of the speaker;

[0008] S2. Input the current speaker operating frequency signal to the LM567 and receive the detection electrical signal output by the LM567;

[0009] S3. Determine whether the current detected electrical signal matches the horn open circuit signal: if not, continue to execute step S1; if yes, execute step S4.

[0010] S4. Based on the current frequency configuration, perform incremental pulse width modulation on the speaker's feedback signal to generate an updated frequency configuration and the current speaker's operating frequency signal.

[0011] S5. Determine whether the updated frequency configuration exceeds the preset increment threshold: if not, then execute step S2; if yes, then consider that the current speaker has an open circuit and issue a relevant warning signal.

[0012] The horn open-circuit dynamic detection method of the present invention, compared with the prior art, enters incremental pulse width modulation processing when an open-circuit feature is detected, so as to ensure the accuracy of horn open-circuit detection under different environmental conditions and reduce the possibility of misjudgment by dynamically adjusting the frequency configuration of pulse width modulation.

[0013] In one embodiment, the determination of the horn open-circuit signal is expressed as follows:

[0014] When the detection electrical signal is high, step S4 is executed;

[0015] If the detection signal is low, the speaker is considered to be operating normally, and step S1 is executed.

[0016] Therefore, by determining that the detection signal is high, dynamic open-circuit detection is considered necessary. This allows for a simple judgment to determine whether to enter the frequency increment process, ensuring that the system can promptly enter dynamic detection mode in case of abnormal conditions.

[0017] In another embodiment, determining whether the current detected electrical signal matches the horn open-circuit signal also includes a duration threshold, which is specifically expressed as follows:

[0018] When the detection electrical signal is high and the duration of the high level is greater than the duration threshold, then step S4 is executed;

[0019] When the detection signal is high and the duration of the high level is less than or equal to the duration threshold, the speaker is considered to be operating normally and step S1 is continued.

[0020] If the detection signal is low, the speaker is considered to be operating normally, and step S1 is executed.

[0021] Accordingly, the present invention introduces a duration threshold to prevent short-term electrical signal fluctuations or noise interference from being misjudged as horn open circuits, thereby ensuring a more robust and accurate detection process. This effectively improves the system's anti-interference capability in complex environments and reduces false detections caused by environmental noise or temporary faults.

[0022] Furthermore, the incremental pulse width modulation is performed by incrementally updating the current frequency configuration according to a frequency increment parameter to generate an updated frequency configuration;

[0023] Next, the feedback signal of the horn is pulse-width modulated according to the updated frequency configuration to form the current operating frequency signal of the horn after incrementing.

[0024] Accordingly, this invention uses a fixed frequency increment parameter to perform pulse width modulation through multi-frequency point / frequency sweep, thereby finding the required frequency point corresponding to the center frequency of the LM567 after frequency hopping at the current temperature. This ensures that the system can adapt to environmental changes and dynamically adjust the detection frequency, avoiding misjudgments caused by frequency drift during fixed-frequency detection. This significantly improves the stability and reliability of horn open-circuit detection, ensuring high-precision detection results even under environmental interference such as temperature fluctuations.

[0025] A horn open-circuit dynamic detection device includes a pulse width modulation unit, an open-circuit signal receiving and transmitting unit, an open-circuit identification unit, an incremental pulse width modulation unit, and an incremental limit judgment unit.

[0026] The pulse width modulation unit is used to perform pulse width modulation on the feedback signal of the speaker according to the current frequency configuration, and generate the current operating frequency signal of the speaker.

[0027] The open-circuit signal receiving and transmitting unit is used to input the current operating frequency signal of the speaker to the LM567 and receive the detection electrical signal output by the LM567.

[0028] The open-circuit identification unit is used to determine whether the current detected electrical signal matches the horn open-circuit signal: if not, the pulse width modulation unit 1 is called again; if yes, the incremental pulse width modulation unit 4 is called.

[0029] The incremental pulse width modulation unit is used to incrementally modulate the feedback signal of the speaker according to the current frequency configuration, and generate an updated frequency configuration and the current operating frequency signal of the speaker.

[0030] The incremental limit judgment unit is used to determine whether the updated frequency configuration exceeds the preset incremental threshold: if not, the open circuit signal receiving and transmitting unit 2 is called; if so, it is considered that the current speaker has an open circuit phenomenon and a relevant warning signal is issued.

[0031] An audio system includes an audio circuit board electrically connected to a speaker, a speaker open-circuit dynamic detection device electrically connected to the audio circuit board, and an LM567 electrically connected to the speaker open-circuit dynamic detection device.

[0032] The audio circuit board is used to process the audio to be played, generate an audio signal, and send it to the speaker for playback after pulse width modulation. At the same time, it generates a feedback signal for the speaker and transmits the feedback signal to the speaker open circuit dynamic detection device.

[0033] The LM567 is used to receive the operating frequency signal of the horn of the horn open circuit dynamic detection device through pin 3, and match it with a preset center frequency; then, according to the matching result, it outputs the corresponding detection electrical signal to the horn open circuit dynamic detection device through pin 8 to perform open circuit detection.

[0034] The horn open circuit dynamic detection device is the horn open circuit dynamic detection device described above.

[0035] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0036] Figure 1 This is a simplified structural diagram of the LM567;

[0037] Figure 2 A simplified schematic diagram illustrating the data transmission structure of an audio system;

[0038] Figure 3 This is a simplified structural diagram of the horn open-circuit dynamic detection device described in this invention;

[0039] Figure 4 This is a simplified flowchart illustrating the horn open-circuit dynamic detection method described in this invention. Detailed Implementation

[0040] To address the issue of inaccurate detection when using the LM567 for speaker open-circuit detection under certain environmental interference conditions in existing technologies, this invention performs pulse width modulation (PWM) on the audio signal based on the current frequency configuration to generate the current speaker's operating frequency signal. This current speaker operating frequency signal is input to the LM567, and the detection signal output by the LM567 is received. The invention then determines whether the current detection signal matches the speaker open-circuit signal: if not, open-circuit detection continues; if so, incremental PWM is performed on the audio signal based on the current frequency configuration to generate an updated frequency configuration and the current speaker's operating frequency signal. Simultaneously, it determines whether the updated frequency configuration exceeds a preset incremental threshold: if so, the audio device is considered to have an open circuit; otherwise, open-circuit detection continues on the incrementally incremented speaker operating frequency signal.

[0041] Accordingly, the present invention uses incremental pulse width modulation to detect and confirm the presence of open circuit faults at multiple frequency points, thereby avoiding detection failure due to a single frequency detection under complex temperature changes or external interference, thus improving the accuracy and stability of horn open circuit detection, and thus avoiding misjudgment or missed detection.

[0042] Based on the above design, this invention proposes a dynamic detection method for horn open circuit, and based on this method, proposes a dynamic detection device for horn open circuit.

[0043] Please see Figure 2 , Figure 2 This is a simplified schematic diagram illustrating the data transmission structure of an audio system.

[0044] An audio system includes an audio circuit board electrically connected to a speaker, a speaker open-circuit dynamic detection device electrically connected to the audio circuit board, and an LM567 electrically connected to the speaker open-circuit dynamic detection device.

[0045] The audio circuit board is used to process the audio to be played, generate an audio signal, and send it to the speaker for playback after pulse width modulation. At the same time, it generates a feedback signal from the speaker and transmits the feedback signal to the speaker open-circuit dynamic detection device. The audio signal processing includes audio amplification or noise reduction, etc. The present invention does not specifically limit the audio signal processing method.

[0046] The LM567 is used to receive the operating frequency signal of the horn of the horn open circuit dynamic detection device through pin 3 and match it with a preset center frequency; then, according to the matching result, it outputs the corresponding detection electrical signal to the horn open circuit dynamic detection device through pin 8 to perform open circuit detection.

[0047] Please also refer to Figure 3 and Figure 4, Figure 3 This is a simplified structural diagram of the horn open-circuit dynamic detection device described in this invention. Figure 4 This is a simplified flowchart illustrating the horn open-circuit dynamic detection method described in this invention.

[0048] The horn open-circuit dynamic detection device includes a pulse width modulation unit 1, an open-circuit signal receiving and transmitting unit 2, an open-circuit identification unit 3, an incremental pulse width modulation unit 4, and an incremental limit judgment unit 5.

[0049] The pulse width modulation unit 1 is used to perform step S1: according to the current frequency configuration, pulse width modulation is performed on the feedback signal of the horn to generate the current operating frequency signal of the horn.

[0050] Specifically, the pulse width modulation (PWM) converts the analog waveform of the speaker's feedback signal into a pulse width modulated digital signal based on the current frequency configuration, so that it represents the speaker's operating frequency and generates the current speaker's operating frequency signal.

[0051] The frequency configuration refers to the specific value used to adjust the frequency of the PWM signal during the pulse width modulation process. It can be a fixed initial frequency configuration that can be preset according to the system design and speaker operating requirements.

[0052] It is important to note that the horn's feedback signal reflects the horn's actual operating status, including changes in the horn's current, voltage, or other physical quantities. This can generally be obtained by measuring the horn's current or voltage.

[0053] The open-circuit signal receiving and transmitting unit 2 is used to perform step S2: inputting the current horn's operating frequency signal to the LM567 and receiving the detection electrical signal output by the LM567.

[0054] Specifically, when the current speaker's operating frequency signal is input to the LM567, the LM567 compares this signal with a preset center frequency:

[0055] If the current operating frequency signal of the speaker is consistent with the preset center frequency of the LM567, the LM567 will output a low-level detection signal.

[0056] If the current operating frequency of the speaker is inconsistent with the preset center frequency of the LM567, the LM567 will output a high-level detection signal.

[0057] It is important to emphasize that the center frequency of the LM567 is determined by the external resistor and capacitor (connected to pins 5 and 6). In other words, the center frequency *f* can be calculated using the formula *f ≈ 1 / 1.1RC*, where *R* is the resistance of the external resistor and *C* is the capacitance of the external capacitor. Therefore, by selecting the resistor and capacitor values, the center frequency of the LM567 can be flexibly adjusted to adapt to different operating conditions and requirements.

[0058] The open circuit identification unit 3 is used to perform step S3: determine whether the current detected electrical signal matches the horn open circuit signal; if not, then continue to call the pulse width modulation unit 1; if yes, then call the incremental pulse width modulation unit 4.

[0059] Specifically, the determination of the horn open-circuit signal is expressed as follows:

[0060] When the detection signal is high, the incremental pulse width modulation unit 4 is invoked to perform dynamic open circuit detection.

[0061] When the detection signal is low, it is considered that the speaker is operating normally and the pulse width modulation unit 1 is called again.

[0062] To further prevent false detections, in another embodiment, determining whether the current detected electrical signal matches the horn open-circuit signal also includes a duration threshold, which is specifically expressed as follows:

[0063] When the detection signal is high and the duration of the high level is greater than the duration threshold, the incremental pulse width modulation unit 4 is invoked to perform dynamic open circuit detection.

[0064] When the detection signal is high and the duration of the high level is less than or equal to the duration threshold, the speaker is considered to be operating normally and the pulse width modulation unit 1 is called again.

[0065] When the detection signal is low, it is considered that the speaker is operating normally and the pulse width modulation unit 1 is called again.

[0066] The duration threshold is set to 4 seconds by default.

[0067] Accordingly, in order to prevent momentary noise interference or circuit fluctuations from causing erroneous entry into the dynamic open-circuit detection state, this invention introduces a duration threshold to ensure that the signal is considered to indicate that the speaker is open only when the detection signal is in a high-level state for more than a preset time (e.g., 4 seconds). This effectively eliminates misjudgments caused by short-term factors such as power fluctuations, thereby improving the detection stability and accuracy of the system in dynamic environments and avoiding frequent entry into frequency sweep mode.

[0068] The incremental pulse width modulation unit 4 is used to perform step S4: according to the current frequency configuration, incremental pulse width modulation is performed on the feedback signal of the horn to generate an updated frequency configuration and the current operating frequency signal of the horn.

[0069] Specifically, the incremental pulse width modulation is to incrementally update the current frequency configuration according to a frequency increment parameter to generate an updated frequency configuration;

[0070] Next, the feedback signal of the horn is pulse-width modulated according to the updated frequency configuration to form the current operating frequency signal of the horn after incrementing.

[0071] The frequency increment parameter ranges from the initial frequency configuration to ±1500 Hz, with the initial value being the initial frequency configuration minus 1500 Hz. Subsequent iterations increment by 100 Hz. For example, if the initial frequency configuration is 20 kHz, the initial value (first configuration) for dynamic open-circuit detection is 18.5 kHz, the second configuration is 18.6 kHz, and so on.

[0072] After prolonged operation, the audio circuit board or LM567 may experience temperature changes due to environmental or chip temperature variations, causing the LM567's reference frequency to drift. This can lead to misjudgment of the detection signal (i.e., the LM567's preset center frequency jumps, resulting in an incorrect output of a high-level detection signal), even though the speaker is not actually open-circuited.

[0073] Based on this, the present invention achieves frequency sweeping of pulse width modulation by incrementally updating the frequency configuration, that is, iteratively performing pulse width modulation according to the frequency configuration from low frequency to high frequency, thereby realizing dynamic detection of horn open circuit phenomenon, effectively improving the accuracy, reliability and stability of horn open circuit detection.

[0074] The incremental limit judgment unit 5 is used to execute step S5: determine whether the updated frequency configuration exceeds the preset incremental threshold; if not, call the open circuit signal receiving and transmitting unit 2; if so, it is considered that the current speaker has an open circuit phenomenon and issue a relevant warning signal.

[0075] The increment threshold is the initial frequency + 1500 Hz. For example, if the initial frequency is 20 kHz, the increment threshold is 21.5 kHz. When the pulse width modulation frequency is greater than 21.5 kHz, it is considered that the speaker has an open circuit, and a relevant warning signal is issued, indicating that manual intervention is required.

[0076] It should be noted that during the dynamic open-circuit detection process of the present invention, when the detection signal returns to a low level, the frequency configuration used by the subsequent pulse width modulation unit 1 is the updated frequency configuration for pulse width modulation. This means that the frequency configuration of pulse width modulation is dynamically shifted according to temperature changes, thereby ensuring that it conforms to the center frequency after frequency hopping of LM567.

[0077] On the other hand, if during the dynamic open circuit detection process, the frequency configuration increases to 1500Hz above the initial frequency and the detection signal remains high, it is considered that the speaker has an open circuit. After manual intervention to replace the speaker or check the circuit to restore it to normal, the frequency configuration is further initialized to restore the current frequency configuration to the initial frequency configuration until the next dynamic open circuit detection process.

[0078] In summary, this invention forms a closed-loop feedback mechanism by dynamically adjusting the frequency configuration and combining it with changes in the state of the detected electrical signal. This effectively improves the accuracy, reliability, and stability of the dynamic open-circuit detection process. Furthermore, it can dynamically adapt to changes in ambient temperature and hardware characteristics, avoiding misjudgments caused by frequency hopping of the LM567, thereby improving the robustness of the entire detection system in complex environments.

[0079] Compared with existing technologies, this invention solves the frequency drift problem caused by changes in ambient temperature and other interference factors by introducing incremental pulse width modulation and dynamic frequency adjustment mechanism. It avoids misjudgment caused by frequency drift when detecting at a fixed frequency, thereby ensuring that high-precision detection results can still be maintained under environmental interference such as temperature fluctuations.

[0080] In addition, by introducing a duration threshold judgment before performing dynamic open circuit detection, the present invention effectively improves the anti-interference capability of the detection system and reduces the possibility of misjudgment, thereby enabling accurate and stable horn open circuit detection under various environmental conditions.

[0081] Based on the same inventive concept, this application also provides an electronic device, which can be a server, desktop computing device, or mobile computing device (e.g., laptop computing device, handheld computing device, tablet computer, netbook, etc.). The device includes one or more processors and a memory, wherein the processor is used to execute a program to implement the speaker open-circuit dynamic detection method of the embodiments of the present invention; the memory is used to store a computer program executable by the processor.

[0082] Based on the same inventive concept, this application also provides a computer-readable storage medium corresponding to the aforementioned embodiment of the horn open-circuit dynamic detection method. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the horn open-circuit dynamic detection method described in any of the above embodiments.

[0083] This application may take the form of a computer program product implemented on one or more storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing program code. Computer storage media include permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information may be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to: phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0084] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and the present invention also intends to include these modifications and variations.

Claims

1. A method for dynamic detection of open circuit in a horn, characterized in that, Includes the following steps: S1. Based on the current frequency configuration, perform pulse width modulation on the feedback signal of the speaker to generate the current operating frequency signal of the speaker; S2. Input the current speaker operating frequency signal to the LM567 and receive the detection electrical signal output by the LM567; S3. Determine whether the current detected electrical signal matches the horn open circuit signal: if not, continue to execute step S1; if yes, execute step S4. S4. Based on the current frequency configuration, perform incremental pulse width modulation on the speaker's feedback signal to generate an updated frequency configuration and the current speaker's operating frequency signal. S5. Determine whether the updated frequency configuration exceeds the preset increment threshold: if not, execute step S2; if yes, consider that the current speaker has an open circuit and issue a relevant warning signal. Determining whether the current detected electrical signal matches the horn open-circuit signal also includes a duration threshold, the specific determination of which is as follows: When the detection electrical signal is high and the duration of the high level is greater than the duration threshold, then step S4 is executed; When the detection signal is high and the duration of the high level is less than or equal to the duration threshold, the speaker is considered to be operating normally and step S1 is continued. If the detection signal is low, the speaker is considered to be operating normally, and step S1 is executed.

2. The method for dynamic detection of open circuit in a horn according to claim 1, characterized in that, The incremental pulse width modulation is performed by incrementally updating the current frequency configuration according to a frequency increment parameter to generate an updated frequency configuration. Next, the feedback signal of the horn is pulse-width modulated according to the updated frequency configuration to form the current operating frequency signal of the horn after incrementing.

3. A dynamic detection device for horn open circuit, characterized in that, It includes a pulse width modulation unit, an open-circuit signal receiving and transmitting unit, an open-circuit identification unit, an incremental pulse width modulation unit, and an incremental limit judgment unit; The pulse width modulation unit is used to perform pulse width modulation on the feedback signal of the speaker according to the current frequency configuration, and generate the current operating frequency signal of the speaker. The open-circuit signal receiving and transmitting unit is used to input the current operating frequency signal of the speaker to the LM567 and receive the detection electrical signal output by the LM567. The open circuit identification unit is used to determine whether the current detected electrical signal matches the horn open circuit signal: if not, the pulse width modulation unit (1) is called again; if yes, the incremental pulse width modulation unit (4) is called. The incremental pulse width modulation unit is used to incrementally modulate the feedback signal of the speaker according to the current frequency configuration, and generate an updated frequency configuration and the current operating frequency signal of the speaker. The incremental limit judgment unit is used to determine whether the updated frequency configuration exceeds the preset incremental threshold: if not, the open circuit signal receiving and transmitting unit (2) is called; if so, it is considered that the current speaker has an open circuit phenomenon and a relevant warning signal is issued. Determining whether the current detected electrical signal matches the horn open-circuit signal also includes a duration threshold, the specific determination of which is as follows: When the detection signal is high and the duration of the high level is greater than the duration threshold, the incremental pulse width modulation unit (4) is invoked to perform dynamic open circuit detection. When the detection electrical signal is high and the duration of the high level is less than or equal to the duration threshold, the speaker is considered to be operating normally and the pulse width modulation unit (1) is called again. When the detection signal is low, it is considered that the speaker is operating normally and the pulse width modulation unit (1) is called again.

4. The horn open-circuit dynamic detection device according to claim 3, characterized in that, The incremental pulse width modulation is performed by incrementally updating the current frequency configuration according to a frequency increment parameter to generate an updated frequency configuration. Next, the feedback signal of the horn is pulse-width modulated according to the updated frequency configuration to form the current operating frequency signal of the horn after incrementing.

5. An audio system, characterized in that, It includes an audio circuit board electrically connected to a speaker, a speaker open-circuit dynamic detection device electrically connected to the audio circuit board, and an LM567 electrically connected to the speaker open-circuit dynamic detection device; The audio circuit board is used to process the audio to be played, generate an audio signal, and send it to the speaker for playback after pulse width modulation. At the same time, it generates a feedback signal for the speaker and transmits the feedback signal to the speaker open circuit dynamic detection device. The LM567 is used to receive the operating frequency signal of the horn of the horn open circuit dynamic detection device through pin 3, and match it with a preset center frequency; then, according to the matching result, it outputs the corresponding detection electrical signal to the horn open circuit dynamic detection device through pin 8 to perform open circuit detection. The horn open circuit dynamic detection device is the horn open circuit dynamic detection device described in claim 3 or 4 above.

6. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, when the processor executes the computer program, it implements a dynamic detection method for an open-circuit horn as described in claim 1 or 2.

7. A computer-readable storage medium storing computer-executable instructions, characterized in that, When the computer-executable instructions are executed by the processor, a method for dynamic detection of open-circuit horn as described in claim 1 or 2 is implemented.

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