CN111726741A - Microphone state detection method and device - Google Patents
Microphone state detection method and device Download PDFInfo
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- CN111726741A CN111726741A CN202010577828.9A CN202010577828A CN111726741A CN 111726741 A CN111726741 A CN 111726741A CN 202010577828 A CN202010577828 A CN 202010577828A CN 111726741 A CN111726741 A CN 111726741A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
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Abstract
The application discloses a microphone state detection method and device, belongs to the technical field of signal processing, and can solve the problem that the detection efficiency of a microphone module is low. The device includes: the first end of the switch module is connected with the grounding end of the microphone module, and the second end of the switch module is connected with the grounding end of the circuit board of the electronic equipment; the third end of the switch module is connected with the first end of the main control module; the first end of the detection module is connected with the grounding end of the microphone module, and the second end of the detection module is connected with the second end of the main control module; the main control module is used for receiving the signal of the detection module and determining whether the microphone module is invalid or not according to the signal under the condition that the first end of the switch module is disconnected with the grounding end of the microphone module and the microphone module is not powered; the signal comprises a capacitance value between the metal shield of the microphone module and the diaphragm. The embodiment of the application can improve the detection efficiency of the microphone module.
Description
Technical Field
The application belongs to the technical field of signal processing, and particularly relates to a microphone state detection method and device.
Background
Microphone module failures often occur during the use of the handset by the user or during the production of the handset. For example, if foreign objects enter the microphone body during use, the characteristics of the microphone may be changed or directly disabled, so that the function of the microphone module cannot be used normally. When a production line is used in the production process, such as microphone monomer mounting, the soldering flux and the solder paste are not uniform at high temperature, so that the soldering flux and the solder paste splash around, and if the soldering flux and the solder paste splash into the microphone body carelessly, the microphone module can be caused to lose efficacy. Therefore, how to detect whether the microphone module fails is a crucial technology.
However, in the process of implementing the present application, the inventors found that at least the following problems exist in the prior art:
the existing method for detecting whether the microphone module is invalid is relatively complicated, so that the detection efficiency is low.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method and an apparatus for detecting a microphone state, which can solve the problem of low detection efficiency of a microphone module.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a microphone state detection apparatus, where the apparatus includes: the device comprises a switch module, a microphone module, a detection module and a main control module;
the microphone module comprises a metal shielding cover and a vibrating diaphragm;
the first end of the switch module is connected with the grounding end of the microphone module, the second end of the switch module is connected with the grounding end of the circuit board of the electronic equipment, and the third end of the switch module is connected with the first end of the main control module;
the first end of the detection module is connected with the grounding end of the microphone module, and the second end of the detection module is connected with the second end of the main control module;
the detection module is used for detecting a capacitance value between a metal shielding case and a diaphragm of the microphone module;
the main control module is used for receiving the signal of the detection module and determining whether the microphone module is invalid according to the signal under the condition that the first end of the switch module is disconnected with the grounding end of the microphone module and the microphone module is not powered;
wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
In a second aspect, an embodiment of the present application provides a microphone state detection method, which is applied to the microphone state detection apparatus in the first aspect, and the method includes:
under the condition that the first end of the switch module is disconnected with the grounding end of the microphone module and the microphone module is not powered, the main control module receives a signal sent by the detection module;
the main control module determines whether the microphone module fails according to the signal;
wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
In a third aspect, an embodiment of the present application provides a microphone state detection apparatus, where the apparatus includes:
the first receiving module is used for receiving the signal sent by the detection module under the condition that the first end of the switch module is disconnected with the grounding end of the microphone module and the microphone module is not powered;
the processing module is used for determining whether the microphone module is invalid or not according to the signal;
wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
In a fourth aspect, an embodiment of the present application provides an electronic device, including: a processor, a memory and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the steps of the microphone state detection method according to the second aspect.
In a fifth aspect, the present embodiments provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the microphone state detection method according to the second aspect.
In a sixth aspect, the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the steps of the microphone state detection method according to the second aspect.
In the embodiment of the application, the main control module receives a signal of the detection module, and determines whether the microphone module fails according to the signal, wherein the signal is a capacitance value between a metal shielding case and a diaphragm of the microphone module. Therefore, by the aid of the scheme, whether the microphone module fails or not can be determined quickly and conveniently through change of the capacitance value, and accordingly detection efficiency of the microphone module is improved.
Drawings
Fig. 1 is one of the structural diagrams of a microphone state detection apparatus according to an embodiment of the present application;
fig. 2 is a second structural diagram of the microphone state detection apparatus according to the embodiment of the present application;
FIG. 3 is a block circuit diagram of an embodiment of the present application;
FIG. 4 is a process flow diagram of an embodiment of the present application;
FIG. 5 is a flow chart of a microphone state detection method according to an embodiment of the present application;
fig. 6 is one of the structural diagrams of the microphone state detection apparatus according to the embodiment of the present application;
fig. 7 is a second structural diagram of the microphone state detection apparatus according to the embodiment of the present application;
fig. 8 is a block diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The microphone state detection device, the microphone state detection method, and the like provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings by specific embodiments and application scenarios thereof.
Referring to fig. 1, fig. 1 is a structural diagram of a microphone state detection device according to an embodiment of the present application. As shown in fig. 1, the microphone state detection apparatus according to the embodiment of the present application includes: a switch module 101, a microphone module 102, a detection module 103, and a main control module 104.
The microphone module comprises a metal shielding cover and a diaphragm. A first end 101a of the switch module 101 is connected to a ground terminal 102a of the microphone module 102, and a second end 101b of the switch module 101 is connected to a ground terminal 105 of a circuit board of an electronic device; the third end 101c of the switch module 101 is connected to the first end 104a of the main control module 104. A first end 103a of the detection module 103 is connected to a ground end 102a of the microphone module 102, and a second end 103b of the detection module 103 is connected to a second end 104b of the main control module 104.
The detection module 103 is configured to detect a capacitance value between a metal shielding case and a diaphragm of the microphone module.
The main control module 104 is configured to receive the signal of the detection module 103 and determine whether the microphone module fails according to the signal when the first end of the switch module is disconnected from the ground end of the microphone module and the microphone module is not powered. Wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
In order to achieve the purpose of rapidly determining whether the microphone fails, in the embodiment of the present application, a capacitive sensor is used as the detection module, and a metal shielding cover of the microphone module is used as the metal detection device. Wherein the capacitive sensor may be a Specific Absorption Rate (SAR). A SAR sensor can be understood as a capacitive sensor. When a microphone back plate or a vibrating diaphragm is provided with foreign matters (such as oil stain/water drops/solder paste/soldering flux) or when the back plate or the vibrating diaphragm is damaged, the volume value between the metal shielding cover and the vibrating diaphragm of the microphone module can be changed, and the SAR sensor can detect the change of the volume value, so that the collected signals are sent to the main control module, and then the main control module judges whether the microphone module fails or not.
In the embodiment of the present invention, the metal shield case is connected to a ground terminal of the microphone module inside the microphone module. In order to enable the metal shielding cover of the microphone module to be used as a metal detection device of the capacitive sensor, the microphone circuit is improved and optimized in the embodiment of the application, and the metal shielding cover can be used as the metal detection device of the capacitive sensor when microphone failure detection is carried out. That is, in the embodiment of the present application, the grounding pin of the microphone module is connected to the grounding end of the circuit board through a switch module.
In the embodiment of the present application, the switch module may be implemented by a metal oxide Semiconductor Field Effect Transistor (MOS Transistor).
As shown in fig. 2, in order to normally function as a microphone, the apparatus may further include: an audio processing module 106, wherein a first input end 106a of the audio processing module 106 is connected to the power supply end 102b of the microphone module 102, and a second input end 106b of the audio processing module 106 is connected to the output end 102c of the microphone module 102; the first output end 106c of the audio processing module 106 is connected to the third end 104c of the main control module 104.
When the audio processing module supplies power to the microphone module, the microphone module can work normally. The sound signal of the microphone module is converted into an electric signal and then output to the audio processing module, and the audio processing module processes (such as analog-to-digital conversion) and then sends the processed signal to the main control module.
Referring to fig. 3, a circuit block diagram of an embodiment of the present application is shown. In fig. 3, the MOS transistor serves as a switch module. The D pole (drain) (first end) of the MOS transistor is connected to the ground terminal of the microphone module, the S pole (source) (second end) of the MOS transistor is connected to the ground terminal of the circuit board of the electronic device, and the G pole (gate) (third end) of the MOS transistor is connected to the first end (GPIO 1 in fig. 3) of the main control module.
Specifically, the ground GND of the microphone module is connected to the ground of the circuit board through a MOS switch Q1, and the MOS switch Q1 is controlled by a General-purpose input/output (GPIO) of the main control module (e.g., main chip) (e.g., GPIO 1). Meanwhile, the grounding end of the microphone module is also connected to the capacitance sensor. The power supply terminal VDD and the Output terminal Output of the microphone are respectively connected to the audio processing module. The output end of the capacitance sensor and the output end of the audio processing module are respectively connected to the main control module.
When the capacitance sensor works, the collected information can be transmitted to the main control module, so that the main control module can analyze data. When the audio Codec of the audio processing module supplies power to the microphone module, the microphone module can work normally. The sound signal of the microphone module is converted into an electric signal and then output to the audio processing module, and the audio processing module processes (such as analog-to-digital conversion) and then sends the processed signal to the main control module.
The following operation principle using the circuit shown in fig. 3 will be described with reference to fig. 4. When the microphone failure detection is needed, the main control module controls the MOS switch Q1 to be switched off, the power supply terminal VDD of the microphone is switched off, at the moment, the microphone does not work normally, the grounding terminal of the microphone is not connected with the ground on the circuit board, and the metal shielding cover of the microphone can be used as a metal detection device of the capacitance sensor.
In practical application, when foreign matters enter the back plate or the diaphragm, the microphone sound inlet hole can cause the volume value between the microphone metal cover and the diaphragm to change, and when the microphone diaphragm is damaged due to external force or strong sound pressure, the volume value between the microphone metal cover and the diaphragm can also change. At this time, the capacitance sensor can detect such a change. Specifically, the capacitive sensor collects data and sends the data to the main control module. The main control module can compare the data obtained from the capacitance sensor with a preset capacitance value range to obtain a judgment result, so that whether the microphone fails or not is judged according to the judgment result. If the capacitance value is within the preset capacitance value range, the microphone is judged not to be invalid, otherwise, the microphone can be judged to be invalid.
When the microphone is required to be used for recording or calling, the main chip controls the MOS switch Q1 to be closed, at the moment, the grounding end of the microphone is connected with the ground on the circuit board, the microphone supplies power VDD normally, the capacitance sensor is closed, the microphone works normally, and a sound signal can be converted into an electric signal to be output to the audio Codec. And the audio Codec processes the audio signal and sends the processed audio signal to the main control module.
In the embodiment of the application, the main control module receives a signal of the detection module, and determines whether the microphone module fails according to the signal, wherein the signal is a capacitance value between a metal shielding case and a diaphragm of the microphone module. Therefore, by the aid of the scheme, whether the microphone module fails or not can be determined quickly and conveniently through change of the capacitance value, and accordingly detection efficiency of the microphone module is improved. Meanwhile, the method is simple and quick, and does not need disassembly and other complicated analysis processes, so that the method can be used in any scene needing to detect whether the microphone functions are normal or not, such as production line production, after-sales maintenance and the like.
Referring to fig. 5, fig. 5 is a flowchart of a microphone state detection method according to an embodiment of the present application. The method can be applied to the microphone state detection device. As shown in fig. 5, a microphone state detection method according to an embodiment of the present application includes:
wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
In this step, it is determined that the microphone module is not disabled when the capacitance value is within a preset capacitance value range, and it is determined that the microphone module is disabled when the capacitance value exceeds the preset capacitance value range.
Specifically, the control module judges whether the capacitance value is within a preset capacitance value range to obtain a judgment result. Determining that the microphone module is not invalid when the judgment result shows that the capacitance value is within the capacitance value range; otherwise, determining that the microphone module is invalid.
The preset capacitance range can be set according to actual conditions.
In the embodiment of the application, the main control module receives a signal of the detection module, and determines whether the microphone module fails according to the signal, wherein the signal is a capacitance value between a metal shielding case and a diaphragm of the microphone module. Therefore, by the aid of the scheme, whether the microphone module fails or not can be determined quickly and conveniently through change of the capacitance value, and accordingly detection efficiency of the microphone module is improved.
Further, on the basis of the above embodiment, the method may further include: and receiving a signal sent by an audio processing module, wherein the signal sent by the audio processing module is obtained by converting an output signal of the microphone module when the first end of the switch module is connected with the grounding end of the microphone module and the microphone module is powered. The microphone can be normally used by receiving the signal sent by the audio processing module, so that the normal use of the microphone is ensured.
It should be noted that, in the microphone state detection method provided in the embodiment of the present application, the execution subject may be a microphone state detection apparatus, or a control module in the microphone state detection apparatus for executing the loading microphone state detection method. In the embodiment of the present application, a microphone state detection method performed by a microphone state detection device is taken as an example, and the microphone state detection method provided in the embodiment of the present application is described.
In addition, the method of the embodiment of the application can also be used for detecting the vibration amplitude of the microphone diaphragm. When the vibration amplitude of the diaphragm exceeds the maximum amplitude, damage to the diaphragm can be avoided by reducing such amplitude. The method can also be used for microphone characteristic analysis, for example, when a test sound source is played, the capacitance sensor detects the vibration of the microphone diaphragm in real time and records a numerical value, so that the microphone diaphragm characteristic is analyzed.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a microphone state detection apparatus according to an embodiment of the present application. As shown in fig. 6, the apparatus may include:
the first receiving module 601 is configured to receive a signal sent by the detecting module when the first end of the switch module is disconnected from the ground end of the microphone module and the microphone module is not powered; a processing module 602, configured to determine whether the microphone module fails according to the signal; wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
Wherein the processing module 602 may include:
the first processing sub-module is used for determining that the microphone module is not invalid under the condition that the capacitance value is within a preset capacitance value range; and the second processing submodule is used for determining that the microphone module is invalid under the condition that the capacitance value exceeds the preset capacitance value range.
As shown in fig. 7, the apparatus may further include: the second receiving module 603 is configured to receive a signal sent by an audio processing module, where the signal sent by the audio processing module is obtained by converting an output signal of the microphone module when the first end of the switch module is connected to the ground end of the microphone module and the microphone module is powered.
The microphone state detection device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.
The microphone state detection device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
The microphone state detection device provided in the embodiment of the present application can implement each process implemented by the microphone state detection device in the method embodiment shown in fig. 5, and is not described here again to avoid repetition.
By the aid of the scheme, whether the microphone module is invalid or not can be determined quickly and conveniently through change of the capacitance value, and accordingly detection efficiency of the microphone module is improved.
Fig. 8 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application. The electronic device 800 includes, but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810.
Those skilled in the art will appreciate that the electronic device 800 may further comprise a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 810 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The electronic device structure shown in fig. 8 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.
The radio frequency unit 801 is configured to receive a signal sent by the detection module when the first end of the switch module is disconnected from the ground end of the microphone module and the microphone module is not powered;
a processor 810 for determining whether the microphone module is disabled based on the signal; wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
By the aid of the scheme, whether the microphone module is invalid or not can be determined quickly and conveniently through change of the capacitance value, and accordingly detection efficiency of the microphone module is improved.
Optionally, the processor 810 is further configured to determine that the microphone module is not failed when the capacitance value is within a preset capacitance value range; and determining that the microphone module is invalid when the capacitance value exceeds the preset capacitance value range.
Optionally, the radio frequency unit 801 is further configured to receive a signal sent by an audio processing module, where the signal sent by the audio processing module is obtained by converting an output signal of the microphone module when the first end of the switch module is connected to the ground end of the microphone module and the microphone module is powered.
It should be understood that in the embodiment of the present application, the input Unit 804 may include a Graphics Processing Unit (GPU) 8041 and a microphone 8042, and the graphics processing Unit 8041 processes image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes a touch panel 8071 and other input devices 8072. A touch panel 8071, also referred to as a touch screen. The touch panel 8071 may include two portions of a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein. The memory 809 may be used to store software programs as well as various data including, but not limited to, application programs and operating systems. The processor 810 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 810.
Optionally, an electronic device is further provided in this embodiment of the present application, and includes a processor 810, a memory 809, and a program or an instruction stored in the memory 809 and executable on the processor 810, where the program or the instruction is executed by the processor 810 to implement each process of the above microphone state detection method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and the non-mobile electronic devices described above.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above-mentioned microphone state detection method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the embodiment of the microphone state detection method, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An apparatus for detecting a microphone state, the apparatus comprising: the device comprises a switch module, a microphone module, a detection module and a main control module;
the microphone module comprises a metal shielding cover and a vibrating diaphragm;
the first end of the switch module is connected with the grounding end of the microphone module, the second end of the switch module is connected with the grounding end of the circuit board of the electronic equipment, and the third end of the switch module is connected with the first end of the main control module;
the first end of the detection module is connected with the grounding end of the microphone module, and the second end of the detection module is connected with the second end of the main control module;
the detection module is used for detecting a capacitance value between a metal shielding case and a diaphragm of the microphone module;
the main control module is used for receiving the signal of the detection module and determining whether the microphone module is invalid according to the signal under the condition that the first end of the switch module is disconnected with the grounding end of the microphone module and the microphone module is not powered;
wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
2. The apparatus of claim 1, wherein the metal shield is connected to a ground terminal of the microphone module.
3. The apparatus of claim 1, wherein the switching module is a Metal Oxide Semiconductor (MOS) transistor.
4. The apparatus of claim 1, further comprising:
a first input end of the audio processing module is connected with a power supply end of the microphone module, and a second input end of the audio processing module is connected with an output end of the microphone module; and the first output end of the audio processing module is connected with the third end of the main control module.
5. A microphone state detection method applied to the signal processing apparatus according to any one of claims 1 to 4, the method comprising:
under the condition that the first end of the switch module is disconnected with the grounding end of the microphone module and the microphone module is not powered, the main control module receives a signal sent by the detection module;
the main control module determines whether the microphone module fails according to the signal;
wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
6. The method of claim 5, wherein the determining, by the master module, whether the microphone module is disabled according to the signal comprises:
determining that the microphone module is not invalid when the capacitance value is within a preset capacitance value range;
and determining that the microphone module is invalid when the capacitance value exceeds the preset capacitance value range.
7. The method of claim 5, further comprising:
and receiving a signal sent by an audio processing module, wherein the signal sent by the audio processing module is obtained by converting an output signal of the microphone module when the first end of the switch module is connected with the grounding end of the microphone module and the microphone module is powered.
8. An apparatus for detecting a microphone state, the apparatus comprising:
the first receiving module is used for receiving the signal sent by the detection module under the condition that the first end of the switch module is disconnected with the grounding end of the microphone module and the microphone module is not powered;
the processing module is used for determining whether the microphone module is invalid or not according to the signal;
wherein the signal comprises a capacitance value between a metal shield of the microphone module and a diaphragm.
9. The apparatus of claim 8, wherein the processing module comprises:
the first processing sub-module is used for determining that the microphone module is not invalid under the condition that the capacitance value is within a preset capacitance value range;
and the second processing submodule is used for determining that the microphone module is invalid under the condition that the capacitance value exceeds the preset capacitance value range.
10. The apparatus of claim 8, further comprising:
and the second receiving module is used for receiving a signal sent by the audio processing module, wherein the signal sent by the audio processing module is obtained by converting an output signal of the microphone module when the first end of the switch module is connected with the grounding end of the microphone module and the microphone module is powered on.
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| CN111726741B (en) | 2021-09-17 |
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