Microphone and electronic device

Abstract

The application discloses a microphone and an electronic device, and belongs to the technical field of electronics. The microphone is characterized in that a shell and a carrier plate are connected to form a first cavity, a cavity wall of the first cavity has a sound pickup hole, an energy storage device, a sound pickup device and an acoustic-electric conversion device are arranged in the first cavity; the sound pickup device comprises a first back electrode and a first diaphragm, the first back electrode and the first diaphragm are connected to form a second cavity, a back electrode hole of the first back electrode is connected with the sound pickup hole and the second cavity, the sound pickup device is used for collecting sound waves conducted to the second cavity through the sound pickup hole and converting the sound waves into a first electric signal to be output to the outside of the microphone; the acoustic-electric conversion device comprises a second back electrode and a second diaphragm, the second back electrode and the second diaphragm are connected to form a third cavity, a back electrode hole of the second back electrode is connected with the sound pickup hole and the third cavity, the acoustic-electric conversion device is used for collecting sound waves conducted to the third cavity through the sound pickup hole and converting the sound waves into a second electric signal to be transmitted to the energy storage device; and the energy storage device is used for supplying power for the microphone.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronics, and particularly relates to a microphone and an electronic device. BACKGROUND

[0002] With the development of mobile terminals, the mobile terminal has become an indispensable tool in people's daily life. The microphone is an energy conversion device that can convert sound into an electrical signal, which provides an important radio function for the mobile terminal. At present, the mobile terminal usually uses its built-in power supply to power the microphone.

[0003] However, when the mobile terminal is in a microphone working scene such as calling or recording for a long time, the power consumption of the microphone is high, which affects the use time of the mobile terminal. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a microphone and an electronic device, which can solve the problem that the power consumption of the microphone is high when the mobile terminal is in a microphone working scene such as calling or recording for a long time, thereby affecting the use time of the mobile terminal.

[0005] In a first aspect, the embodiments of the present application provide a microphone, which comprises a shell, a carrier plate, an energy storage device, a sound pickup device and at least one sound-electricity conversion device; the shell and the carrier plate are connected to form a first cavity, a cavity wall of the first cavity has a sound pickup hole, the energy storage device, the sound pickup device and the sound-electricity conversion device are all arranged in the first cavity; the sound pickup device comprises a first back electrode and a first diaphragm, the first back electrode and the first diaphragm are connected to form a second cavity, a back electrode hole of the first back electrode communicates the sound pickup hole with the second cavity, the sound pickup device is used for collecting sound waves conducted to the second cavity through the sound pickup hole and converting the sound waves into a first electrical signal to output to the outside of the microphone;

[0006] The sound-electricity conversion device comprises a second back electrode and a second diaphragm, the second back electrode and the second diaphragm are connected to form a third cavity, a back electrode hole of the second back electrode communicates the sound pickup hole with the third cavity, the sound-electricity conversion device is used for collecting sound waves conducted to the third cavity through the sound pickup hole and converting the sound waves into a second electrical signal to transmit to the energy storage device; the energy storage device is used for powering the microphone.

[0007] In a second aspect, the embodiments of the present application provide an electronic device, which comprises the microphone of any one of the first aspect.

[0008] In a third aspect, the embodiments of the present application provide a power supply adjustment method, applied to the microphone of any one of the first aspect or applied to the electronic device of the second aspect. The method comprises: acquiring an electric quantity of an external power supply connected to a power supply end of the microphone; and controlling the energy storage device and the power supply end to be turned on in a case where the electric quantity is lower than a target electric quantity threshold.

[0009] In a fourth aspect, the embodiments of the present application provide an electronic device. The electronic device comprises a processor and a memory. The memory stores programs or instructions executable on the processor. The programs or instructions are executed by the processor to implement the steps of the method of the third aspect.

[0010] In a fifth aspect, the embodiments of the present application provide a readable storage medium. The readable storage medium stores programs or instructions. The programs or instructions are executed by a processor to implement the steps of the method of the third aspect.

[0011] In a sixth aspect, the embodiments of the present application provide a chip. The chip comprises a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement the method of the third aspect.

[0012] In a seventh aspect, the embodiments of the present application provide a computer program product. The program product is stored in a storage medium. The program product is executed by at least one processor to implement the method of the third aspect.

[0013] In the embodiments of the present application, the microphone comprises a shell, a carrier plate, an energy storage device, a sound pickup device and at least one sound-electricity conversion device. The sound pickup device can be used to collect sound waves conducted to a second cavity in the sound pickup device and convert the sound waves into a first electric signal output to the outside of the microphone. The sound-electricity conversion device can be used to collect sound waves conducted to a third cavity in the sound-electricity conversion device and convert the sound waves into a second electric signal transmitted to the energy storage device. In this technical solution, the microphone can convert sound waves into a second electric signal through the sound-electricity conversion device, and store the second electric signal in the energy storage device, so as to power the microphone by the energy storage device. In this way, in the case that the microphone is in a working scenario such as a call or recording for a long time, the energy storage device can be effectively used to power the microphone, the power supply time of the external power supply for the microphone can be reduced, and the power supply time of the external power supply can be increased. In the case that the microphone is arranged in an electronic device, the energy storage device can be used to power the microphone, the power supply time of the power supply of the electronic device for the microphone can be reduced, and the use time of the electronic device can be increased. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a structural schematic diagram of a microphone provided by the embodiments of the present application;

[0015] Figure 2Figure 2 is a structural schematic diagram of a microphone provided by an embodiment of the present application;

[0016] Figure 3 Figure 3 is a structural schematic diagram of a microphone provided by an embodiment of the present application;

[0017] Figure 4 Figure 4 is a structural schematic diagram of a microphone provided by an embodiment of the present application;

[0018] Figure 5 Figure 5 is a structural schematic diagram of a microphone provided by an embodiment of the present application;

[0019] Figure 6 Figure 6 is a structural schematic diagram of a chip provided by an embodiment of the present application;

[0020] Figure 7 Figure 7 is a flowchart of a power supply adjustment method provided by an embodiment of the present application;

[0021] Figure 8 Figure 8 is a block diagram of a power supply adjustment device provided by an embodiment of the present application;

[0022] Figure 9 Figure 9 is a block diagram of an electronic device provided by an embodiment of the present application;

[0023] Figure 10 Figure 10 is a hardware structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0025] The terms “first”, “second”, and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by “first”, “second”, etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, “and / or” in the specification and claims means at least one of the connected objects, and the character “ / ” generally represents an “or” relationship between the front and rear associated objects.

[0026] The microphone and electronic device provided by the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments and their application scenarios.

[0027] With the development of mobile terminals, mobile terminals have become an indispensable tool in people's daily life. The microphone is an energy conversion device that can convert sound into an electrical signal, which provides an important radio function for the mobile terminal. For example, the microphone can be a silicon microphone, which includes a shell, a carrier plate, a chip, a MEMS transducer, a first connecting line and a second connecting line. Among them, the MEMS transducer includes a back electrode, a diaphragm (i.e. a vibrating diaphragm), and a base. The MEMS transducer is used to convert sound into an electrical signal.

[0028] The shell and the carrier plate are connected to form a first cavity. The chip, the back electrode, the diaphragm (i.e. the vibrating diaphragm), the base, the first connecting line and the second connecting line are all arranged in the first cavity. The base and the back electrode are stacked on one side of the carrier plate, and the diaphragm is connected to the back electrode through the base to form a second cavity. Moreover, the carrier plate has a pickup hole. The base has a hollow area. The back electrode has a back electrode hole. The back electrode hole communicates the pickup hole with the second cavity through the hollow area. In the MEMS transducer, the back electrode and the diaphragm can form a variable capacitor. In the case that sound is transmitted into the second cavity through the pickup hole, the sound wave of the sound will cause the diaphragm to vibrate, so that the distance between the diaphragm and the back electrode changes with the vibration, and the capacitance value between the diaphragm and the back electrode changes. The MEMS transducer is used to collect the sound wave transmitted into the second cavity through the pickup hole by using the capacitance value change between the diaphragm and the back electrode, convert the sound wave into an electrical signal, and transmit the electrical signal to the chip through the first connecting line. The chip is connected to the carrier plate through the second connecting line, and is used to transmit the electrical signal converted from the sound wave to the outside of the microphone through the carrier plate. The electrical signal is used to identify the sound wave.

[0029] Further examples, the chip can include: a bias signal end VBIAS, a charge pump, a voltage regulator (LDO), a filter (Filter), an external power supply end VDD, a non-volatile memory (NVM), an input signal end VIN, a low noise amplifier (LNA), an output buffer (Out Buffer), an output signal end VOUT and a ground end GND. Among them, the external power supply end VDD is connected with the power supply end of the microphone, which is used to connect with the external power supply (i.e. the built-in power supply of the mobile terminal) to power the microphone. The external power supply end VDD passes through the filter, the voltage regulator and the charge pump to the bias signal end VBIAS. The bias signal end VBIAS is connected with the diaphragm of the MEMS transducer. The input signal end VIN is connected with the back electrode of the MEMS transducer, which is used to transmit the electrical signal converted from the sound wave to the low noise amplifier, and then output to the outside of the microphone through the output buffer by the output signal end VOUT.

[0030] The filter, the voltage stabilizing power supply and the charge pump are power supply modulation modules. The voltage provided by the power supply end VDD is processed by the filter and the voltage stabilizing power supply to provide an input voltage for the charge pump and a power supply voltage for the bottom noise amplifier and the output buffer. The charge pump outputs the input voltage after multi-stage amplification to the diaphragm of the MEMS transducer. The bottom noise amplifier amplifies the electrical signal transmitted by the back electrode and outputs the amplified electrical signal to the outside of the microphone through the output buffer.

[0031] However, the working current of the silicon microphone is milliamperes (mA). However, when the mobile terminal is in a microphone working scene such as a call or recording for a long time, the power consumption of the power supply is relatively high, which affects the use time of the mobile terminal.

[0032] Please refer to Figure 1 which shows a structural schematic diagram of a microphone provided by an embodiment of the present application. The microphone can solve the foregoing problems to some extent. As shown in Figure 1 The microphone 10 includes a shell 101, a carrier plate 102, an energy storage device, a pickup device 110 and at least one acoustic-electric conversion device 111.

[0033] The shell 101 is connected with the carrier plate 102 to form a first cavity. The cavity wall of the first cavity has a pickup hole 1021. The energy storage device, the pickup device 110 and the acoustic-electric conversion device 111 are all arranged in the first cavity. It should be noted that, Figure 1 The number of acoustic-electric conversion devices 111 in the microphone 10 is not limited to the number of acoustic-electric conversion devices 111 that the microphone 10 can include. Figure 1 The number of acoustic-electric conversion devices 111 in the microphone 10 is not limited to the number of acoustic-electric conversion devices 111 that the microphone 10 can include.

[0034] The pickup device 110 includes a first back electrode 104A and a first diaphragm 105A. The first back electrode 104A is connected with the first diaphragm 105A to form a second cavity α. The back electrode hole 1041 of the first back electrode 104A communicates the pickup hole 1021 with the second cavity α. The pickup device 110 is used to collect the sound waves conducted to the second cavity α through the pickup hole 1021 and convert them into a first electrical signal for output to the outside of the microphone 10. The first signal is used to identify the sound waves entering the microphone.

[0035] The acoustic-electric conversion device 111 includes a second back electrode 104B and a second diaphragm 105B. The second back electrode 104B and the second diaphragm 105B are connected to form a third cavity β. The back electrode hole 1041 of the second back electrode 104B communicates the pickup hole 1021 with the third cavity β. The acoustic-electric conversion device 111 is used to collect the sound waves conducted to the third cavity β through the pickup hole 1021 and convert them into a second electrical signal for transmission to the energy storage device.

[0036] Further, the microphone 10 further comprises a chip 103. The chip 103 is arranged in the first cavity. The chip 103 is configured to control the energy storage device and a power supply terminal of the microphone 10 to be conductive. The power supply terminal is configured to supply power to the microphone. Optionally, the power supply terminal of the microphone 10 is configured to be connected with an external power source. The external power source is configured to supply power to the microphone 10. The chip 103 is further configured to control the energy storage device and the power supply terminal to be conductive when the power of the external power source is lower than a target power threshold, so that the energy storage device supplies power to the microphone 10 through the power supply terminal.

[0037] In the embodiments of the present application, the microphone comprises a shell, a carrier plate, an energy storage device, a sound pickup device and at least one acoustic-electric conversion device. The sound pickup device can be used to collect sound waves conducted to the second cavity in the sound pickup device and convert them into a first electric signal for output to the outside of the microphone. The acoustic-electric conversion device can be used to collect sound waves conducted to the third cavity in the acoustic-electric conversion device and convert them into a second electric signal for transmission to the energy storage device. In this technical solution, the microphone can convert sound waves into a second electric signal through the acoustic-electric conversion device and store them in the energy storage device, so that the energy storage device supplies power to the microphone. In this way, when the microphone is in a call, recording or other working scenario for a long time, the energy storage device can be effectively used to supply power to the microphone, the power supply time of the external power source to the microphone can be reduced, and the power supply time of the external power source can be increased. When the microphone is arranged in an electronic device, the use time of the electronic device can be increased by using the energy storage device to supply power to the microphone.

[0038] In some embodiments of the present application, the first back electrode 104A of the sound pickup device 110 and the first back electrode 104B of the acoustic-electric conversion device 111 can be the same back electrode or independent back electrodes. Based on these two cases, the following describes the microphone structure respectively.

[0039] In an optional case, the first back electrode 104A and the second back electrode 104B are the same back electrode. The first diaphragm 105A is located in the third cavity β, and the first diaphragm 105A has a diaphragm vent hole 1051.

[0040] In the case where the number of acoustic-electric conversion devices 111 is one, as shown in Figure 1 The diaphragm vent hole 1051 of the first diaphragm 105A and the back electrode hole 1041 of the first back electrode 104A communicate the third cavity β, the second cavity α and the sound pickup hole 1021 of the acoustic-electric conversion device 111.

[0041] In this case, the first back electrode 104A and the first diaphragm 105A constitute a variable capacitor. The first back electrode 104A and the second diaphragm 105B also constitute a variable capacitor. The first back electrode 104A is the fixed plate of the variable capacitor. The first diaphragm 105A and the second diaphragm 105B are the movable plates of the variable capacitor.

[0042] In the case that the microphone 10 is in the working state, sound waves can be introduced to the second cavity a through the sound pickup hole 1021 and the back electrode hole 1041 of the first back electrode 104A, the sound waves introduced into the second cavity a push the first diaphragm 105A to vibrate, so as to change the capacitance value between the first back electrode 104A and the first diaphragm 105A, and then convert and output the first electric signal. Sound waves are introduced to the third cavity β through the sound pickup hole 1021, the back electrode hole 1041 of the first back electrode 104A, and the diaphragm vent hole 1051 of the first diaphragm 105A, the sound waves introduced into the third cavity β push the second diaphragm 105B to vibrate, so as to change the capacitance value between the first back electrode 104A and the second diaphragm 105B, and then convert and output the second electric signal.

[0043] Among them, the third cavity β is larger than the second cavity a. And because the first back electrode 104A and the second back electrode 104B are the same back electrode. Therefore, the effective vibration area between the first back electrode 104A and the first diaphragm 105A, that is, the target projection area of the first diaphragm 105A on the first back electrode 104A, is equal to the effective vibration area between the second back electrode 104B and the second diaphragm 105B, that is, the projection area of the second diaphragm 105B on the second back electrode 104B. Thus, the first diaphragm 105A is located in the third cavity β. The plate distance between the first back electrode 104A and the first diaphragm 105A is smaller than the plate distance between the second back electrode 104B and the second diaphragm 105B.

[0044] In the case that the number of the acoustoelectric conversion devices 111 is at least two, as shown in Figure 2 each second diaphragm 105B has a diaphragm vent hole 1051. The plurality of diaphragm vent holes 1051 and the back electrode hole 1041 of the first back electrode 104A communicate the third cavity β, the second cavity a and the sound pickup hole 1021 of each acoustoelectric conversion device 111. In this way, in the case that the microphone 10 is in the working state, sound waves can be introduced to the second cavity a, the third cavity β of each acoustoelectric conversion device 111 through the sound pickup hole 1021 in turn. For example, Figure 2 Taking the microphone 10 including two acoustoelectric conversion devices 111 as an example.

[0045] It should be noted that in some embodiments, the diaphragm vent hole 1051 of the first diaphragm 105A is arranged in a staggered manner with the back electrode hole 1041 of the first back electrode 104A. And in the case that the number of the acoustoelectric conversion devices 111 is at least two, the diaphragm vent holes 1051 of any two second diaphragms 105B arranged adjacently are arranged in a staggered manner. In this way, the convection of air flow in the second cavity and the third cavity can be avoided, and energy loss can be caused.

[0046] In some embodiments of the present application, the pickup device 110 can further include a first base. The first base and the first back electrode 104A are stacked on one side of the carrier plate 102, and the first base has a hollow region. The back electrode hole 1041 of the first back electrode 104A communicates with the pickup hole 1021 through the hollow region of the first base.

[0047] The acoustoelectric conversion device 111 includes a second base. The second base and the second back electrode 104B are stacked on one side of the carrier plate 102, and the second base has a hollow region. The back electrode hole 1041 of the second back electrode 104B communicates with the pickup hole 1021 through the hollow region of the second base.

[0048] The first back electrode 104A and the second back electrode 104B are the same back electrode 104. The first base and the second base are the same base. In an alternative case, as shown in Figure 1 and Figure 2 The second diaphragm 105B in the acoustoelectric conversion device 111 can be connected to the back electrode 104 through the base to form a third cavity. Similarly, the first diaphragm 105A in the pickup device 110 can also be connected to the back electrode 104 through the base to form a second cavity.

[0049] In another alternative case, the first back electrode 104A and the second back electrode 104B are different back electrodes. The effective vibration area S1 between the second back electrode 104B and the second diaphragm 105B, i.e. the projection area of the second diaphragm 105B on the second back electrode 104B, can be greater than the target projection area S2, so that the third cavity β is greater than the second cavity α. And / or, the plate distance d1 between the second back electrode 104B and the second diaphragm 105B can also be greater than the plate distance d2 between the first back electrode 104A and the first diaphragm 105A.

[0050] In an alternative case, as shown in Figure 3 The first cavity includes a plurality of inner wall surfaces. The pickup device 110 is arranged on the first inner wall surface, and the first inner wall surface has a pickup hole 1021 communicating with the second cavity α. The acoustoelectric conversion device 111 is arranged on the second inner wall surface, and the second inner wall surface has a pickup hole 1021 communicating with the third cavity β. The first inner wall surface and the second inner wall surface are different inner wall surfaces in the plurality of inner wall surfaces. It should be noted that, Figure 3 Take the microphone 10 including one acoustoelectric conversion device 111 as an example.

[0051] Alternatively, the first inner wall surface and the second inner wall surface can be two opposite inner wall surfaces. For example, please continue to refer to Figure 3 The pickup device 110 is arranged on the carrier plate 102, and the acoustoelectric conversion device 111 is arranged on the inner surface of the shell 101 opposite to the carrier plate 102.

[0052] In this configuration, the first back electrode 104A and the first diaphragm 105A constitute a variable capacitor. The second back electrode 104B and the second diaphragm 105B also constitute a variable capacitor. Both the first back electrode 104A and the second back electrode 104B are fixed plates of the variable capacitor. The first diaphragm 105A and the second diaphragm 105B are movable plates of the variable capacitor.

[0053] When the microphone 10 is in operation, sound waves can be introduced into the second cavity α through the pickup hole 1021 and the back electrode hole 1041 of the first back electrode 104A. The sound waves introduced into the second cavity α drive the first diaphragm 105A to vibrate, thereby changing the capacitance value between the first back electrode 104A and the first diaphragm 105A, and thus converting and outputting a first electrical signal. Sound waves can also be introduced into the third cavity β through the pickup hole 1021 and the back electrode hole 1041 of the second back electrode 104B. The sound waves introduced into the third cavity β drive the second diaphragm 105B to vibrate, thereby changing the capacitance value between the second back electrode 104B and the second diaphragm 105B, and thus converting and outputting a second electrical signal.

[0054] It should be noted that in some embodiments, the diaphragm vent 1051 of the first diaphragm 105A is misaligned with the back electrode hole 1041 of the first back electrode 104A. Similarly, the diaphragm vent 1051 of the second diaphragm 105B is misaligned with the back electrode hole 1041 of the second back electrode 104B. This avoids convection of airflow between the second and third cavities, preventing energy loss.

[0055] Further optionally, when the microphone 10 includes at least two acoustic-to-electric conversion devices 111, the second back electrode 104A of each acoustic-to-electric conversion device 111 may also be the same back electrode, or may be different independent back electrodes.

[0056] In an alternative embodiment, the second back electrode 104A of each acoustic-to-electric conversion device 111 may also be the same back electrode. For example... Figure 4 As shown, at least two acoustic-to-electric conversion devices 111 can be nested. Each acoustic-to-electric conversion device 111 has a second diaphragm 105B with a diaphragm vent 1051. Multiple diaphragm vents 1051 and the back electrode hole 1041 of the first back electrode 104A connect to the third cavity β, the second cavity α, and the pickup hole 1021 of each acoustic-to-electric conversion device 111. Thus, when the microphone 10 is in operation, sound waves can be sequentially introduced into the second cavity α and the third cavity β of each acoustic-to-electric conversion device 111 through the pickup hole 1021. For example, Figure 4 The microphone 10 includes two sound-to-electric conversion devices 111 as an example.

[0057] In another alternative case, the second back electrode 104A of each acoustic-electric conversion device 111 can also be a different independent back electrode. In this case, each acoustic-electric conversion device 111 can be arranged on the same inner wall surface of the first cavity, or at least part of the acoustic-electric conversion devices 111 can be arranged on different inner wall surfaces of the first cavity. For example, as shown in Figure 5 The microphone 10 includes two acoustic-electric conversion devices 111. The pickup device 110 is arranged on the carrier plate 102. The two acoustic-electric conversion devices 111 can be arranged side by side on the inner surface of the shell 101 opposite the carrier plate 102.

[0058] In some embodiments of the present application, the pickup device 110 can further include a first base. The first base and the first back electrode 104A are arranged in layers on one side of the carrier plate 102, and the first base has a hollow region. The back electrode hole 1041 of the first back electrode 104A communicates with the pickup hole 1021 through the hollow region of the first base.

[0059] The acoustic-electric conversion device 111 includes a second base. The second base and the second back electrode 104B are arranged in layers on one side of the carrier plate 102, and the second base has a hollow region. The back electrode hole 1041 of the second back electrode 104B communicates with the pickup hole 1021 through the hollow region of the second base.

[0060] Optionally, as Figure 1 to Figure 5 The microphone 10 further includes a first connecting line 107. The first connecting line 107 is arranged between the pickup device 110 and the chip 103, and is used for the pickup device 110 to transmit the first electrical signal to the chip 103. Similarly, the microphone 10 further includes a third connecting line 112. The third connecting line 112 is arranged between the acoustic-electric conversion device 111 and the chip 103, and is used for the acoustic-electric conversion device 111 to transmit the second electrical signal to the chip 103. Further optionally, the microphone 10 further includes a second connecting line 108. The second connecting line 108 is arranged between the chip 103 and the carrier plate 102, and is used for the chip 103 to transmit the electrical signal to the carrier plate 102. For example, the chip 103 can transmit the first electrical signal to the carrier plate 102 to output the first electrical signal outside the microphone 10 through the carrier plate 102.

[0061] Further optionally, the microphone 10 further includes a chip 103. The acoustic-electric conversion device 111 is further used to transmit the second electrical signal to the chip 103. The chip 103 is further used to perform analog-to-digital conversion (Analog to Digital Converter, ADC) sampling processing on the second electrical signal to obtain a processed second electrical signal, perform filtering processing on the processed second electrical signal to obtain a filtered second electrical signal, perform amplification processing on the filtered second electrical signal to obtain an amplified second electrical signal, and transmit the amplified second electrical signal to the energy storage device.

[0062] In an optional case, as shown in Figure 6 The chip 103 includes: an ADC module 1037, a sampling filter module 1038, an amplification circuit 1039, and a charging control circuit 10310.

[0063] The ADC module 1037 is configured to perform ADC sampling processing on the second electric signal through the sound pressure conversion end VC to obtain a processed second electric signal and transmit the processed second electric signal to the sampling filter module 1038. The sampling filter module 1038 is configured to perform filter processing on the processed second electric signal to obtain a filtered second electric signal and transmit the filtered second electric signal to the amplification circuit 1039. The amplification circuit 1039 is configured to perform amplification processing on the filtered second electric signal to obtain an amplified second electric signal and transmit the amplified second electric signal to the energy storage device. The charging control circuit 10310 is connected with the energy storage device and the power supply end VDD respectively. The charging control circuit 10310 is configured to control the energy storage device and the power supply end to be turned on when the power of the external power supply is lower than the target power threshold, so that the energy storage device supplies power to the microphone 10 through the power supply end.

[0064] Further optionally, the chip 103 further includes a charging protection circuit 10311. The charging protection circuit 10311 is connected with the energy storage device. The charging protection circuit 10311 is configured to control the energy storage device and the power supply end to be disconnected through the charging control circuit 10310 when an abnormality of the energy storage device is detected. For example, Figure 6 The structure of the chip 103 shown in Figure 2 The chip 103 shown in FIG. 10 is a structure after the ADC module 1037, the sampling filter module 1038, the amplification circuit 1039, and the charging control circuit 10310 are added to the chip 103. That is, the chip 103 includes: a bias signal end VBIAS, a charge pump 1031, a voltage stabilizing power supply 1032, a filter 1033, an external power supply end VDD, a non-volatile memory 1034, an input signal end VIN, a bottom noise amplifier 1035, an output buffer 1036, an output signal end VOUT, a ground end GND. The ADC module 1037, the sampling filter module 1038, the amplification circuit 1039, the charging control circuit 10310, and the charging protection circuit 10311. It should be noted that the functions of the modules repeated in Figure 6 Figure 2 the foregoing description of the functions of the modules in Figure 2 the foregoing description of the functions of the modules in

[0065] ​In the embodiment of the present application, the microphone comprises a shell, a carrier plate, an energy storage device, a sound pickup device and at least one acoustic-electric conversion device. The sound pickup device can be used to collect sound waves conducted to the second cavity in the sound pickup device and convert them into a first electric signal for output to the outside of the microphone. The acoustic-electric conversion device can be used to collect sound waves conducted to the third cavity in the acoustic-electric conversion device and convert them into a second electric signal for transmission to the energy storage device. In this technical solution, the microphone can convert sound waves into a second electric signal through the acoustic-electric conversion device, store them in the energy storage device, and then use the energy storage device to power the microphone. In this way, when the microphone is in a call, recording or other working scenario for a long time, the energy storage device can be effectively used to power the microphone, the power-on time of the external power supply for the microphone can be reduced, and the power-on time of the external power supply can be increased. When the microphone is arranged in an electronic device, using the energy storage device to power the microphone can reduce the power-on time of the power supply of the electronic device for the microphone and increase the use time of the electronic device.

[0066] The embodiment of the present application also provides an electronic device. The electronic device comprises the microphone provided by the embodiment of the present application. For example, the electronic device comprises Figure 1 to Figure 5 Any of the microphones.

[0067] In the embodiment of the present application, the electronic device comprises a shell, a carrier plate, an energy storage device, a sound pickup device and at least one acoustic-electric conversion device. The sound pickup device can be used to collect sound waves conducted to the second cavity in the sound pickup device and convert them into a first electric signal for output to the outside of the microphone. The acoustic-electric conversion device can be used to collect sound waves conducted to the third cavity in the acoustic-electric conversion device and convert them into a second electric signal for transmission to the energy storage device. In this technical solution, the microphone can convert sound waves into a second electric signal through the acoustic-electric conversion device, store them in the energy storage device, and then use the energy storage device to power the microphone. In this way, when the microphone is in a call, recording or other working scenario for a long time, the energy storage device can be effectively used to power the microphone, the power-on time of the external power supply for the microphone can be reduced, and the power-on time of the external power supply can be increased. When the microphone is arranged in an electronic device, using the energy storage device to power the microphone can reduce the power-on time of the power supply of the electronic device for the microphone and increase the use time of the electronic device.

[0068] Please refer to Figure 7 which shows a flowchart of a power supply adjustment method provided by the embodiment of the present application. The power supply adjustment method can be applied to the microphone provided by the embodiment of the present application, or applied to the electronic device provided by the embodiment of the present application. As shown in Figure 7 the power supply adjustment method comprises:

[0069] Step 901, obtaining the power of the external power supply connected to the power supply end of the microphone.

[0070] Optionally, the step 901 can be performed by the aforementioned Figure 6 The charging control circuit 10310 shown in the chip can be executed. The charging control circuit 10310 can obtain the power of the external power supply connected to the power supply end VDD of the microphone through the power supply end VDD.

[0071] Step 902, in the case of low power below the target power threshold, control the energy storage device and the power supply end conduction.

[0072] Optionally, the step 901 can be performed by the aforementioned Figure 6 The charging control circuit 10310 shown in the chip can be executed. After obtaining the power of the external power supply, the charging control circuit 10310 can compare the size of the power below the target power threshold. In the case of power above or equal to the target power threshold, the energy storage device and the power supply end are controlled to be disconnected to maintain the external power supply to the microphone. In the case of power below the target power threshold, the energy storage device and the power supply end are controlled to be turned on to make the energy storage device supply power to the microphone.

[0073] In the embodiment of the application, the microphone can convert the sound wave into the second electric signal through the sound-electricity conversion device, and store it in the energy storage device, so as to make the energy storage device supply power to the microphone. In this way, in the case that the microphone is in the working scene of talking, recording and the like for a long time, the energy storage device can be effectively used to supply power to the microphone, the power supply time of the external power supply to the microphone is reduced, and the power supply time of the external power supply is increased. In the case that the microphone is arranged in the electronic device, the power supply time of the power supply of the electronic device to the microphone can be reduced by using the energy storage device to supply power to the microphone, and the use time of the electronic device is increased.

[0074] The power supply adjustment method provided in the embodiment of the application can be executed by the power supply adjustment device. In the embodiment of the application, the power supply adjustment method is executed by the power supply adjustment device as an example to illustrate the power supply adjustment device provided in the embodiment of the application.

[0075] Please refer to Figure 8 which shows a block diagram of a power supply adjustment device provided in the embodiment of the application. The power supply adjustment device can be applied to the microphone provided in the embodiment of the application, or applied to the electronic device provided in the embodiment of the application. As shown in Figure 8 The power supply adjustment device 1000 comprises:

[0076] The acquisition module 1001 is configured to acquire the power of the external power supply connected to the power supply end of the microphone.

[0077] The control module 1002 is configured to control the energy storage device and the power supply end to be turned on in the case of low power below the target power threshold.

[0078] In the embodiments of the present application, the microphone can convert sound waves into a second electric signal through an acoustoelectric conversion device, and store the second electric signal into an energy storage device, so as to power the microphone by the energy storage device. In this way, when the microphone is in a working scenario such as a call or a recording for a long time, the energy storage device can be effectively used to power the microphone, the power supply time of the microphone by an external power supply can be reduced, and the power supply time of the external power supply can be increased. In the case that the microphone is arranged in an electronic device, the energy storage device can be used to power the microphone, the power supply time of the microphone by a power supply of the electronic device can be reduced, and the use time of the electronic device can be increased.

[0079] The power supply adjustment device in the embodiments of the present application is a component in an electronic device, for example, an integrated circuit or a chip. The electronic device can be a terminal, or other devices except the terminal. For example, the electronic device can be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a Mobile Internet Device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), and can also 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, which are not limited in the embodiments of the present application.

[0080] The power supply adjustment device in the embodiments of the present application can be a device with an operating system. The operating system can be an Android operating system, an ios operating system, or other possible operating systems, which are not limited in the embodiments of the present application.

[0081] The power supply adjustment device provided in the embodiments of the present application can implement Figure 7 The method embodiments implement various processes, which are not repeated here to avoid repetition.

[0082] Optionally, as Figure 9As shown, the electronic device 1100 provided by the embodiments of the present application includes a processor 1101 and a memory 1102, and the memory 1102 stores programs or instructions executable on the processor 1101, which, when executed by the processor 1101, implement each step of the power supply adjustment method embodiments described above and achieve the same technical effects. To avoid repetition, details are not described here.

[0083] It should be noted that the electronic device in the embodiments of the present application includes the mobile electronic device and the non-mobile electronic device described above.

[0084] Figure 10 A hardware structure schematic diagram of an electronic device according to an embodiment of the present application is shown. The electronic device 1200 can be the electronic device provided by the embodiments of the present application. In addition, the electronic device can also include, but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210, etc.

[0085] Those skilled in the art can understand that the electronic device 1200 can also include a power supply (such as a battery) for powering each component, and the power supply can be logically connected to the processor 1210 through a power management system, so as to realize the functions of managing charging, discharging, and power consumption management through the power management system. Figure 10 The electronic device structure shown in the figure does not constitute a limitation on the electronic device, and the electronic device can include more or fewer components than shown, or combine certain components, or different component arrangements, which are not described here.

[0086] The processor 1210 is configured to acquire an electric quantity of an external power supply connected to a power supply end of the microphone, and control the energy storage device and the power supply end to be turned on in a case where the electric quantity is lower than a target electric quantity threshold.

[0087] In the embodiments of the present application, the microphone can convert sound waves into a second electric signal through an acoustoelectric conversion device to store in the energy storage device, so as to power the microphone with the energy storage device. In this way, in the case where the microphone is in a call, recording or other working scenario for a long time, the energy storage device can be effectively used to power the microphone, the power supply time of the external power supply for the microphone is reduced, and the power supply time of the external power supply is increased. In the case where the microphone is arranged in the electronic device, the power supply time of the power supply of the electronic device for the microphone is reduced, and the use time of the electronic device is increased by using the energy storage device to power the microphone.

[0088] It should be understood that in the embodiments of the present application, the input unit 1204 can include a graphics processor (GPU) 12041 and a microphone 12042. The graphics processor 12041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1206 can include a display panel 12061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1207 includes at least one of a touch panel 12071 and other input devices 12072. The touch panel 12071 is also referred to as a touch screen. The touch panel 12071 can include two parts of a touch detection device and a touch controller. The other input devices 12072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, and the like, which will not be described here.

[0089] The memory 1209 can be used to store software programs and various data. The memory 1209 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 1209 can include a volatile memory or a non-volatile memory, or the memory 1209 can include both volatile and non-volatile memories. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 1209 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0090] The processor 1210 can include one or more processing units; optionally, the processor 1210 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 1210.

[0091] The embodiments of the present application also provide a readable storage medium, the readable storage medium stores programs or instructions, the programs or instructions are executed by a processor to realize various processes of the above power supply adjustment method embodiments, and the same technical effects can be achieved. To avoid repetition, details are not described here.

[0092] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0093] The embodiment of the present application further provides a chip, which comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions to realize the processes of the power supply adjustment method and achieve the same technical effects. To avoid repetition, details are not described here.

[0094] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0095] The embodiment of the present application provides a computer program product, which is stored in a storage medium, and is executed by at least one processor to realize the processes of the power supply adjustment method and achieve the same technical effects. To avoid repetition, details are not described here.

[0096] It should be noted that in this paper, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to the order of the functions shown or discussed, but can also include the functions performed in a substantially simultaneous manner or in the opposite order according to the functions involved, for example, the described method can be performed in an order different from the described order, and various steps can also be added, omitted or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0097] Through the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned example methods can be realized by means of software and a necessary general hardware platform, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product in essence or in the form of a part that contributes to the prior art, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk) and includes a plurality of instructions for causing a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application.

[0098] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A microphone, characterized by The microphone comprises a shell, a carrier plate, an energy storage device, a pickup device and at least one acoustic-electric conversion device; The shell is connected with the carrier plate to form a first cavity, a cavity wall of the first cavity has a pickup hole, and the energy storage device, the pickup device and the acoustic-electric conversion device are all arranged in the first cavity; The pickup device comprises a first back electrode and a first diaphragm, the first back electrode and the first diaphragm are connected to form a second cavity, a back electrode hole of the first back electrode is communicated with the pickup hole and the second cavity, and the pickup device is used for collecting sound waves conducted to the second cavity through the pickup hole and converting the sound waves into a first electric signal to be outputted to the outside of the microphone; The acoustic-electric conversion device comprises a second back electrode and a second diaphragm, the second back electrode and the second diaphragm are connected to form a third cavity, a back electrode hole of the second back electrode is communicated with the pickup hole and the third cavity, and the acoustic-electric conversion device is used for collecting sound waves conducted to the third cavity through the pickup hole and converting the sound waves into a second electric signal to be transmitted to the energy storage device; The energy storage device is used for powering the microphone.

2. The microphone of claim 1, wherein, The first back electrode and the second back electrode are the same back electrode, the first diaphragm is located in the third cavity, and the first diaphragm has a diaphragm vent hole, In the case that the number of the acoustic-electric conversion devices is one, the diaphragm vent hole and the back electrode hole are communicated with the third cavity of the acoustic-electric conversion device, the second cavity and the pickup hole; In the case that the number of the acoustic-electric conversion devices is at least two, the acoustic-electric conversion devices are arranged in a nested manner, each second diaphragm has the diaphragm vent hole, and the diaphragm vent holes and the back electrode hole are communicated with the third cavity of each acoustic-electric conversion device, the second cavity and the pickup hole.

3. The microphone of claim 2, wherein, The diaphragm vent hole of the first diaphragm is arranged in a staggered manner with the back electrode hole, and in the case that the number of the acoustic-electric conversion devices is at least two, the diaphragm vent holes of any two adjacent second diaphragms are arranged in a staggered manner.

4. The microphone of claim 1, wherein, The volume of the third cavity is greater than the volume of the second cavity.

5. The microphone of claim 4, wherein, The distance between the second diaphragm and the second back electrode is greater than the distance between the first diaphragm and the first back electrode.

6. The microphone of claim 5, wherein, The first cavity comprises a plurality of inner wall surfaces; the pickup device is arranged on a first inner wall surface, and the first inner wall surface has the pickup hole communicated with the second cavity; The acoustic-electric conversion device is arranged on a second inner wall surface, and the second inner wall surface has the pickup hole communicated with the third cavity, and the first inner wall surface and the second inner wall surface are different inner wall surfaces in the plurality of inner wall surfaces.

7. The microphone of claim 1, wherein, The pickup device comprises a first base, the first base and the first back electrode are arranged in a stacked manner on one side of the carrier plate, and the first base has a hollow region, and the back electrode hole of the first back electrode is communicated with the pickup hole through the hollow region of the first base; The acoustic-electric conversion device comprises a second base, the second base and the second back electrode are stacked on one side of the carrier plate, and the second base has a hollow area, and the back electrode hole of the second back electrode communicates with the pickup hole through the hollow area of the second base.

8. The microphone of claim 1, wherein, The energy storage device is also used to power the microphone when the external power supply of the microphone is lower than the target power threshold.

9. The microphone of claim 1, wherein, The microphone further comprises a chip, and the acoustic-electric conversion device is also used to transmit the second electric signal to the chip. The chip is also used to perform analog-to-digital conversion sampling processing on the second electric signal to obtain a processed second electric signal, perform filtering processing on the processed second electric signal to obtain a filtered second electric signal, perform amplification processing on the filtered second electric signal to obtain an amplified second electric signal, and transmit the amplified second electric signal to the energy storage device.

10. An electronic device, comprising: The electronic device comprises the microphone of any one of claims 1 to 9.

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