CN111010644A - Earphone control method, earphone circuit control system and earphone - Google Patents
Earphone control method, earphone circuit control system and earphone Download PDFInfo
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- CN111010644A CN111010644A CN201911405835.4A CN201911405835A CN111010644A CN 111010644 A CN111010644 A CN 111010644A CN 201911405835 A CN201911405835 A CN 201911405835A CN 111010644 A CN111010644 A CN 111010644A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000001960 triggered effect Effects 0.000 claims abstract description 53
- 230000008054 signal transmission Effects 0.000 claims description 32
- 230000005236 sound signal Effects 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 10
- 210000000613 ear canal Anatomy 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000010079 rubber tapping Methods 0.000 description 6
- 238000012790 confirmation Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
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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
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
Abstract
The invention provides a control method of an earphone, a circuit control system of the earphone and the earphone, wherein the control method of the earphone comprises the following steps: acquiring a current signal generated by a loudspeaker of an earphone; determining the number of times the earphone is triggered according to a current signal generated by a loudspeaker of the earphone; and controlling the earphone to execute the operation corresponding to the triggered times. The technical scheme of the invention can save the space of the earphone and reduce the cost of the earphone.
Description
Technical Field
The invention relates to the technical field of earphones, in particular to an earphone control method, an earphone circuit control system and an earphone.
Background
At present, most earphones interact with users through a key module or a touch pad, but the interaction between the earphones and the users is realized through the key module or the touch pad, so that the inner space of the earphones is occupied, and more earphone cost is additionally increased.
Disclosure of Invention
The invention provides a control method of an earphone, a circuit control system of the earphone and the earphone, and aims to save space of the earphone and reduce cost of the earphone.
In order to achieve the above object, the present invention provides a method for controlling an earphone, including the steps of:
acquiring a current signal generated by a loudspeaker of an earphone;
determining the number of times the earphone is triggered according to a current signal generated by a loudspeaker of the earphone;
and controlling the earphone to execute the operation corresponding to the triggered times.
Optionally, the step of determining the number of times the earphone is triggered according to the current signal generated by the speaker of the earphone includes:
acquiring a voltage signal corresponding to a current signal generated by a loudspeaker of the earphone;
calculating the times that the voltage signal is greater than the reference voltage signal within preset time;
and taking the counted number as the number of times that the earphone is triggered.
Optionally, the step of controlling the headset to perform an operation corresponding to the triggered number of times includes:
searching a target operation corresponding to the triggered times of the earphone according to the corresponding relation between the triggered times and the operation;
controlling the earphone to execute the target operation.
In order to achieve the above object, the present invention provides a circuit control system of an earphone, wherein the circuit control system of the earphone comprises a processor, a signal feedback circuit and a speaker;
the loudspeaker is connected with the input end of the signal feedback circuit, and the output end of the signal feedback circuit is connected with the signal input end of the processor;
the loudspeaker is arranged to generate a current signal and transmit the current signal to the signal feedback circuit when being triggered;
the signal feedback circuit is arranged to generate a voltage signal according to the current signal and feed the voltage signal back to the processor;
and the processor is arranged to generate and output a control instruction corresponding to the voltage signal.
Optionally, the signal feedback circuit includes a first resistor;
the first end of the first resistor is connected with the loudspeaker, the first end of the first resistor is connected with the signal input end of the processor, and the second end of the first resistor is grounded.
Optionally, the signal feedback circuit includes a second resistor and a first amplifier;
the first end of the second resistor and the positive input end of the first amplifier are both connected with the horn, and the second end of the second resistor is grounded;
the negative input end of the first amplifier is grounded, and the output end of the first amplifier is connected with the signal input end of the processor.
Optionally, the circuit control system of the earphone further includes a unidirectional signal transmission circuit;
the signal output end of the processor is connected with the input end of the unidirectional signal transmission circuit, the output end of the unidirectional signal transmission circuit is connected with the loudspeaker, and the output end of the unidirectional signal transmission circuit is connected with the input end of the signal feedback circuit;
the unidirectional signal transmission circuit is arranged to receive the audio signal output by the processor and transmit the audio signal to the loudspeaker and the signal feedback circuit.
Optionally, the unidirectional signal transmission circuit includes a second amplifier and a unidirectional conducting element;
the positive input end of the second amplifier is the input end of the unidirectional signal transmission circuit, the negative input end of the second amplifier is grounded, the output end of the second amplifier is connected with the input end of the unidirectional conducting element, and the output end of the unidirectional conducting element is the output end of the unidirectional signal transmission circuit.
Optionally, the processor includes a signal input end, a signal output end, a gain module, a filtering module, and a signal generating module;
the input end of the gain module is connected with the signal output end, the output end of the gain module is connected with the first input end of the filtering module, the second input end of the filtering module is connected with the signal input end, and the output end of the filtering module is connected with the input end of the signal generating module.
In order to achieve the above object, the present invention further provides a headset including the circuit control system of the headset as described in any one of the above.
According to the technical scheme, the triggering times of the earphone are determined according to the current signals generated by the loudspeaker of the earphone when the earphone is triggered, and the earphone is controlled to execute corresponding operations according to the triggering times of the earphone.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for controlling an earphone according to an embodiment of the present invention.
FIG. 2 is a block diagram of a circuit control system of the earphone according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the earphone of the present invention;
FIG. 4 is a schematic circuit diagram of an embodiment of the signal feedback circuit in FIG. 2;
FIG. 5 is a schematic circuit diagram of another embodiment of the signal feedback circuit of FIG. 2;
fig. 6 is a block diagram of a circuit control system of the earphone according to another embodiment of the present invention;
FIG. 7 is a circuit diagram of an embodiment of the one-way signal transmission circuit shown in FIG. 6;
FIG. 8 is a block diagram of a processor according to an embodiment of the invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Fig. 1 is a flowchart illustrating a method for controlling an earphone according to an embodiment of the present invention.
The control method of the headset is applied to a circuit control system of the headset, and for convenience of explanation, the circuit control system of the headset only shows a part related to the embodiment of the present invention.
As shown in fig. 2, the circuit control system of the earphone includes a processor 10, a signal feedback circuit 20 and a speaker 30; wherein, the speaker 30 is connected to the input terminal of the signal feedback circuit 20, and the output terminal of the signal feedback circuit 20 is connected to the signal input terminal IN of the processor 10.
In practical applications, as shown in fig. 3, the basic structure of the earphone often includes a processor 10, a speaker 30, a microphone 11, and a closed cavity formed by the ear canal and the earphone, i.e. an acoustic cavity 12. When the earphone is triggered, for example when the user taps on or presses on the earphone, the air in the acoustic chamber 12 formed by the ear canal and the earphone is compressed, thereby pushing the speaker 30 to vibrate. The voice coil cutting field causes the horn 30 to generate an electric current during vibration of the horn 30. Based on the principle, the control method of the earphone comprises the following steps:
step S10, acquiring a current signal generated by a loudspeaker of the earphone;
specifically, when the earphone is triggered, air in the acoustic cavity 12 formed by the ear canal and the earphone is compressed, so that the speaker 30 is pushed to vibrate, and the voice coil cuts the magnetic field during the vibration of the speaker 30 to enable the speaker 30 to generate a corresponding current signal.
Step S20, determining the number of times of triggering the earphone according to the current signal generated by the loudspeaker of the earphone;
the speaker 30 transmits the generated current signal to the signal feedback circuit 20, and the signal feedback circuit 20 generates a corresponding voltage signal according to the received current signal and feeds the generated voltage signal back to the processor 10. The processor 10 determines the number of times the headset is triggered within a preset time from the received voltage signal. For example, the processor 10 performs the normal energy analysis every preset time, for example, every 0.1S, when receiving the voltage signal, and when the normal energy is greater than the preset spectral energy, for example, when the normal energy is greater than 15dB, it is considered that the user has triggered the earphone, and the processor 10 calculates the total number of times that the earphone is triggered within the preset time. Optionally, in order to prevent the situation that the common energy is greater than the preset spectrum energy within a plurality of preset times during one triggering, if two adjacent common energies are greater than the preset spectrum energy within two adjacent preset times, the last common energy is taken as a reference, that is, the triggering times are recorded as 1 time.
Specifically, in an embodiment, step S20 includes:
step S201, acquiring a voltage signal corresponding to a current signal generated by a loudspeaker of the earphone;
step S202, calculating the times that the voltage signal is greater than the reference voltage signal within the preset time;
and step S203, taking the calculated times as the times of triggering the earphone.
When the earphone is triggered, the voice coil cuts the magnetic field during the vibration of the speaker 30, so that the speaker 30 generates a corresponding current signal, which is transmitted to the signal feedback circuit 20. The signal feedback circuit 20 generates a corresponding voltage signal according to the received current signal, and feeds the generated voltage signal back to the processor 10. The processor 10 calculates the number of times that the received voltage signal is greater than the reference voltage signal within a preset time, and takes the calculated number of times as the number of times that the earphone is triggered. Wherein the reference voltage signal may be set according to the voltage signal received by the processor 10 when the earphone is not triggered.
And step S30, controlling the earphone to execute the operation corresponding to the triggered times.
The processor 10 controls the headset to perform corresponding operations according to the number of times the headset is triggered. Optionally, the processor 10 controls the headset to execute an operation corresponding to the number of times the headset is triggered according to the current working mode of the headset. For example, in the process of playing music by the speaker 30, if the processor 10 determines that the number of times of hitting the earphone by the user is 1 according to the received voltage signal, the processor 10 outputs a control instruction for pausing the music playing; if the processor 10 determines that the frequency of knocking the earphone by the user is 2 times according to the received voltage signal, the processor 10 outputs a control instruction for playing the next piece of music; for another example, when the user makes a call, if the processor 10 determines that the number of times the user taps the earphone is 1 according to the received voltage signal, the processor 10 outputs a control instruction for answering the call; if the processor 10 determines that the number of times the user taps the headset is 2 times based on the received voltage signal, the processor 10 outputs a control command to hang up the phone, etc. Optionally, when the processor 10 generates a control instruction according to the received voltage signal, the processor 10 further outputs the control instruction from the speaker 30 to inquire whether the user executes the determined control instruction, and when receiving a confirmation operation of the user, for example, when receiving a confirmation operation that the user taps the earphone, the earphone is controlled to execute an operation corresponding to the control instruction, so as to prevent the earphone from being triggered by mistake.
Specifically, in an embodiment, step S30 includes:
step S301, searching a target operation corresponding to the triggered times of the earphone according to the corresponding relation between the triggered times and the operation;
step S302, controlling the earphone to execute the target operation.
The corresponding relation between the triggering times and the operation of the earphone in different working modes, namely a mapping table, is established in advance and stored in a storage unit of the earphone. The operating mode of the headset may include a plurality of modes, for example, the operating mode of the headset includes characterizing a first operating mode in a call, characterizing a second operating mode in a music play, and so on. When the number of times that the earphone is triggered within the preset time is calculated, the processor 10 searches the target operation that the earphone needs to execute from the mapping table according to the current working mode of the earphone, and further controls the earphone to execute the target operation.
According to the technical scheme of the embodiment, when the earphone is triggered, the number of times that the earphone is triggered is determined according to the current signal generated by the loudspeaker 30 of the earphone, and the earphone is controlled to execute corresponding operation according to the number of times that the earphone is triggered.
Fig. 2 is a block diagram of a circuit control system of the earphone according to an embodiment of the present invention.
The circuit control system of the earphone comprises a processor 10, a signal feedback circuit 20 and a loudspeaker 30; wherein, the speaker 30 is connected to the input terminal of the signal feedback circuit 20, and the output terminal of the signal feedback circuit 20 is connected to the signal input terminal IN of the processor 10.
The speaker 30 is used for generating and transmitting a current signal to the signal feedback circuit 20 when the earphone is triggered, for example, when a user taps or presses the earphone.
The signal feedback circuit 20 is configured to receive the current signal output by the speaker 30, generate a corresponding voltage signal according to the received current signal, and feed back the generated voltage signal to the processor 10.
The processor 10 may be a bluetooth chip or a digital signal processing chip, or may be another microprocessor such as an FPGA or a single chip. The processor 10 is configured to generate and output a control instruction corresponding to the received voltage signal, so as to control the earphone to perform a corresponding operation.
In practical applications, as shown in fig. 3, the basic structure of the earphone often includes a processor 10, a speaker 30, a microphone 11, and a closed cavity formed by the ear canal and the earphone, i.e. an acoustic cavity 12. When the earphone is triggered, for example when the user taps on or presses on the earphone, the air in the acoustic chamber 12 formed by the ear canal and the earphone is compressed, thereby pushing the speaker 30 to vibrate. The voice coil cutting field causes the horn to generate an electrical current as the horn 30 vibrates. In the embodiment, when the earphone is triggered, the number of times that the earphone is triggered is determined by the current generated when the voice coil cuts the magnetic field in the vibration process of the loudspeaker 30, and then the earphone is controlled to execute corresponding operations according to the number of times that the earphone is triggered.
The specific working principle is as follows: when the earphone is triggered, air in the acoustic cavity 12 formed by the ear canal and the earphone is compressed, so that the speaker 30 is pushed to vibrate, and the voice coil cuts the magnetic field to make the speaker 30 generate a corresponding current signal in the vibration process of the speaker 30, and the current signal is transmitted to the signal feedback circuit 20. The signal feedback circuit 20 generates a corresponding voltage signal according to the received current signal, and feeds the generated voltage signal back to the processor 10. The processor 10 determines from the received voltage signal the number of times the headset is triggered, i.e. the number of times the user triggers the headset, e.g. the number of times the user taps the headset or the number of times the user presses the headset. And generating a control instruction corresponding to the determined triggering times according to the current working mode of the earphone so as to control the earphone to execute corresponding operation. For example, in the process of playing music by the speaker 30, if the processor 10 determines that the number of times of hitting the earphone by the user is 1 according to the received voltage signal, the processor 10 outputs a control instruction for pausing the music playing; if the processor 10 determines that the frequency of knocking the earphone by the user is 2 times according to the received voltage signal, the processor 10 outputs a control instruction for playing the next piece of music; for another example, when the user makes a call, if the processor 10 determines that the number of times the user taps the earphone is 1 according to the received voltage signal, the processor 10 outputs a control instruction for answering the call; if the processor 10 determines that the number of times the user taps the earphone is 2 times according to the received voltage signal, the processor 10 outputs a control instruction for hanging up the phone, and the like, and the corresponding relationship between the number of times of triggering and the control instruction can be set according to actual needs, which is not limited herein. Optionally, when the processor 10 generates a control instruction according to the received voltage signal, the processor 10 further outputs the control instruction from the speaker 30 to inquire whether the user executes the determined control instruction, and when receiving a confirmation operation of the user, for example, when receiving a confirmation operation that the user taps the earphone, the earphone is controlled to execute an operation corresponding to the control instruction, so as to prevent the earphone from being triggered by mistake. The processor 10 performs a normal energy analysis at preset time intervals, for example, at intervals of 0.1S, when receiving the voltage signal, and considers that the user has triggered the earphone once when the normal energy is greater than the preset spectral energy, for example, when the normal energy is greater than 15 dB. In addition, in order to prevent the situation that the common energy is greater than the preset spectrum energy within a plurality of preset times during one triggering, if two adjacent preset times simultaneously occur that the two common energies are greater than the preset spectrum energy, the last common energy is taken as a standard, that is, the triggering times are recorded as 1 time.
According to the technical scheme of the embodiment, when the earphone is triggered, the loudspeaker 30 transmits a current signal generated by vibration of the earphone to the signal feedback circuit 20, the signal feedback circuit 20 generates a corresponding voltage signal according to the received current signal and feeds the voltage signal back to the processor 10, the processor 10 determines the number of times that the earphone is triggered according to the received voltage signal, and generates a corresponding control instruction according to the number of times that the earphone is triggered so as to control the earphone to execute corresponding operation. According to the arrangement, a key module or a touch pad is not required to be arranged to realize interaction between a user and the earphone, so that the space of the earphone can be saved, and the cost of the earphone is reduced.
Optionally, referring to fig. 4, in one embodiment, the signal feedback circuit 20 includes a first resistor R1; the first end of the first resistor R1 is connected to the speaker 30, the first end of the first resistor R1 is connected to the signal input terminal of the processor 10, and the second end of the first resistor R1 is grounded.
Specifically, when the earphone is triggered, air in the acoustic cavity 12 formed by the ear canal and the earphone is compressed, so that the speaker 30 is pushed to vibrate, and the voice coil cuts the magnetic field during the vibration of the speaker 30 to enable the speaker 30 to generate a corresponding current signal. The current signal generated by the speaker 30 flows to the ground through the first resistor R1, and a voltage signal corresponding to the flowing current signal is formed at the first end of the first resistor R1, i.e., a corresponding voltage signal is formed at the intersection of the first resistor R1 and the processor 10. The voltage signal is fed back to the processor 10 for analysis and processing by the processor 10, and a corresponding control command is generated. The signal feedback circuit 20 is formed by a single resistor, and the resistor has a simple structure, occupies less space of the earphone and is low in cost.
Optionally, referring to fig. 5, in an embodiment, the signal feedback circuit 20 includes a second resistor R2 and a first amplifier U1; a first end of the second resistor R2 and the positive input end of the first amplifier U1 are both connected to the speaker 30, and a second end of the second resistor R2 is grounded; the negative input of the first amplifier U1 is connected to ground, and the output of the first amplifier U1 is connected to the signal input of the processor 10.
Specifically, when the earphone is triggered, air in the acoustic cavity 12 formed by the ear canal and the earphone is compressed, so that the speaker 30 is pushed to vibrate, and the voice coil cuts the magnetic field during the vibration of the speaker 30 to enable the speaker 30 to generate a corresponding current signal. The current signal generated by the horn flows to the ground through the second resistor R2. And a voltage signal corresponding to the current signal is generated at the first end of the second resistor R2, and the voltage signal is amplified by the first amplifier U1 and then fed back to the processor 10 for the processor 10 to analyze and process and generate a corresponding control command. The first amplifier U1 is provided to amplify the voltage signal to avoid the voltage signal being too small and therefore being misidentified or not recognizable by the processor 10.
Optionally, referring to fig. 6, in an embodiment, the circuit control system of the headset further includes a unidirectional signal transmission circuit 40; the signal output end of the processor 10 is connected to the input end of the unidirectional signal transmission circuit 40, the output end of the unidirectional signal transmission circuit 40 is connected to the speaker 30, and the output end of the unidirectional signal transmission circuit 40 is connected to the input end of the signal feedback circuit 20.
The unidirectional signal transmission circuit 40 has the characteristic of unidirectional signal transmission, and is used for transmitting the audio signal output by the processor 10 to the speaker 30 for playing, wherein the audio signal may be a voice signal, i.e. a voice signal for a user to talk, or a music signal.
The specific working principle is as follows: under normal conditions, the audio signal output from the processor 10 is transmitted to the speaker 30 through the unidirectional signal transmission circuit 40 for playing, and at the same time, the audio signal is also transmitted to the signal feedback circuit 20. When the earphone is triggered, air in the acoustic cavity 12 formed by the ear canal and the earphone is compressed, so that the speaker 30 is pushed to vibrate, and the voice coil cuts the magnetic field to enable the speaker 30 to generate a corresponding current signal during the vibration of the speaker 30. Since the unidirectional signal transmission circuit 40 can only transmit the audio signal in one direction, the current signal is transmitted to the signal feedback circuit 20. The signal feedback circuit 20 generates a voltage signal according to the received current signal, and feeds back the generated voltage signal and the audio signal transmitted by the unidirectional signal transmission circuit 20 to the processor 10. The processor 10 filters the audio signal in the received signal to obtain a voltage signal generated by triggering the earphone by the user, determines the number of times the earphone is triggered according to the voltage signal, and generates a corresponding control instruction according to the number of times the earphone is triggered to control the earphone to perform a corresponding operation. For example, in the process of playing music by the speaker 30, if the processor 10 determines that the frequency of the user tapping the earphone is 1 time according to the received tapping voltage signal, the processor 10 outputs a control instruction for pausing the music playing; if the processor 10 determines that the frequency of knocking the earphone by the user is 2 times according to the received knocking voltage signal, the processor 10 outputs a control instruction for playing the next piece of music; for another example, when the user makes a call, if the processor 10 determines that the number of times the user taps the earphone is 1 according to the received tapping voltage signal, the processor 10 outputs a command for answering the call; if the processor 10 determines that the number of times of the user tapping the earphone is 2 times according to the received tapping voltage signal, the processor 10 outputs a control instruction for hanging up the phone, and the like, and the corresponding relationship between the tapping number and the control instruction can be set according to actual needs, and is not limited herein. In this embodiment, the unidirectional signal transmission circuit 40 is arranged to transmit the audio signal output by the processor 10, so as to ensure the basic function of the earphone, and prevent the current signal generated by the speaker 30 from being transmitted to the processor 10 through the unidirectional signal transmission circuit 40 when the user triggers the earphone, thereby ensuring the reliability of the circuit.
Optionally, referring to fig. 7, in an embodiment, the unidirectional signal transmission circuit 40 includes a second amplifier U2 and a unidirectional conducting element D1; the positive input end of the second amplifier U2 is the input end of the unidirectional signal transmission circuit 40, the negative input end of the second amplifier U2 is grounded, the output end of the second amplifier U2 is connected with the input end of the unidirectional conducting element D1, and the output end of the unidirectional conducting element D1 is the output end of the unidirectional signal transmission circuit 40.
Specifically, the audio signal output by the processor 10 is amplified by the second amplifier U2, and then transmitted to the speaker 30 for playing through the unidirectional conducting element D1, and the audio signal output by the processor 10 is further transmitted to the signal feedback circuit 20 through the unidirectional conducting element D1. The one-way conduction element D1 can be selected as a diode, the anode of the diode is the input end of the one-way conduction element D1, and the cathode of the diode is the output end of the one-way conduction element D1. By arranging the one-way conduction element D1, when the user triggers the earphone, the one-way conduction element D1 can transmit the current signal generated by the resistance loudspeaker 30 to the processor 10 through the one-way signal transmission circuit 40, so that the reliability of the circuit is ensured.
Optionally, referring to fig. 8, IN an embodiment, the processor 10 includes a signal input terminal IN, a signal output terminal OUT, a gain module 101, a filtering module 102, and a signal generating module 103; the input end of the gain module 101 is connected to the signal output end OUT, the output end of the gain module 101 is connected to the first input end of the filter module 102, the second input end of the filter module 102 is connected to the signal input end IN, and the output end of the filter module 102 is connected to the input end of the signal generation module 103.
When the earphone plays music or makes a call, the audio signal is also fed back to the processor 10 through the signal feedback circuit 40. Therefore, the present embodiment provides the gain module 101, the filtering module 102, and the signal generating module 103 inside the processor 10. The signal amplitude of the audio signal output from the signal output terminal OUT of the processor 10 is adjusted by the gain module 101 to be the same as the signal amplitude of the audio signal received by the signal input terminal IN of the processor 10, for example, the audio signal output from the signal output terminal OUT of the processor 10 is S1, the audio signal received by the signal input terminal IN of the processor 10 is S2, and the gain of the gain module 101 is G, then S2 is set to G S1. The gain module 101 transmits the audio signal G × S1 to a first input terminal of the filter module 102, the audio signal S2 received by the signal input terminal IN of the processor 10 and the voltage signal generated by the user triggering the earphone are transmitted to a second input terminal of the filter module 102, and the filter module 102 transmits S2-G × S1 to obtain the voltage signal generated by the user triggering the earphone and transmits the voltage signal to the signal generation module 103. The signal generating module 103 determines the number of times that the user triggers the earphone according to the received voltage signal, and generates and outputs a control instruction corresponding to the determined number of times of triggering, so as to control the earphone to perform corresponding operations.
The invention also provides an earphone, which comprises the circuit control system of the earphone, wherein the detailed structure of the circuit control system of the earphone can refer to the embodiment and is not described again; it can be understood that, because the earphone of the present invention uses the circuit control system of the earphone, the embodiment of the earphone of the present invention includes all technical solutions of all embodiments of the circuit control system of the earphone, and the achieved technical effects are also completely the same, and are not described herein again.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A control method of an earphone is characterized by comprising the following steps:
acquiring a current signal generated by a loudspeaker of an earphone;
determining the number of times the earphone is triggered according to a current signal generated by a loudspeaker of the earphone;
and controlling the earphone to execute the operation corresponding to the triggered times.
2. The method of claim 1, wherein the step of determining the number of times the headset is activated based on the current signal generated by the speaker of the headset comprises:
acquiring a voltage signal corresponding to a current signal generated by a loudspeaker of the earphone;
calculating the times that the voltage signal is greater than the reference voltage signal within preset time;
and taking the counted number as the number of times that the earphone is triggered.
3. The method for controlling the headphone according to claim 1, wherein the step of controlling the headphone to perform an operation corresponding to the number of times of being triggered includes:
searching a target operation corresponding to the triggered times of the earphone according to the corresponding relation between the triggered times and the operation;
controlling the earphone to execute the target operation.
4. The circuit control system of the earphone is characterized by comprising a processor, a signal feedback circuit and a loudspeaker;
the loudspeaker is connected with the input end of the signal feedback circuit, and the output end of the signal feedback circuit is connected with the signal input end of the processor;
the loudspeaker is arranged to generate a current signal and transmit the current signal to the signal feedback circuit when being triggered;
the signal feedback circuit is arranged to generate a voltage signal according to the current signal and feed the voltage signal back to the processor;
and the processor is arranged to generate and output a control instruction corresponding to the voltage signal.
5. The circuit control system of claim 4, wherein the signal feedback circuit comprises a first resistor;
the first end of the first resistor is connected with the loudspeaker, the first end of the first resistor is connected with the signal input end of the processor, and the second end of the first resistor is grounded.
6. The circuit control system of claim 4, wherein the signal feedback circuit comprises a second resistor and a first amplifier;
the first end of the second resistor and the positive input end of the first amplifier are both connected with the horn, and the second end of the second resistor is grounded;
the negative input end of the first amplifier is grounded, and the output end of the first amplifier is connected with the signal input end of the processor.
7. The circuit control system of claim 4-6, wherein the circuit control system of the headset further comprises a unidirectional signal transmission circuit;
the signal output end of the processor is connected with the input end of the unidirectional signal transmission circuit, the output end of the unidirectional signal transmission circuit is connected with the loudspeaker, and the output end of the unidirectional signal transmission circuit is connected with the input end of the signal feedback circuit;
the unidirectional signal transmission circuit is arranged to receive the audio signal output by the processor and transmit the audio signal to the loudspeaker and the signal feedback circuit.
8. The circuit control system of claim 7, wherein the unidirectional signal transmission circuit comprises a second amplifier and a unidirectional conducting element;
the positive input end of the second amplifier is the input end of the unidirectional signal transmission circuit, the negative input end of the second amplifier is grounded, the output end of the second amplifier is connected with the input end of the unidirectional conducting element, and the output end of the unidirectional conducting element is the output end of the unidirectional signal transmission circuit.
9. The circuit control system of claim 7, wherein the processor comprises a signal input terminal, a signal output terminal, a gain module, a filtering module, and a signal generating module;
the input end of the gain module is connected with the signal output end, the output end of the gain module is connected with the first input end of the filtering module, the second input end of the filtering module is connected with the signal input end, and the output end of the filtering module is connected with the input end of the signal generating module.
10. A headset, characterized in that the headset comprises a circuit control system of the headset according to any of claims 4-9.
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| CN201911405835.4A CN111010644A (en) | 2019-12-30 | 2019-12-30 | Earphone control method, earphone circuit control system and earphone |
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| CN201911405835.4A CN111010644A (en) | 2019-12-30 | 2019-12-30 | Earphone control method, earphone circuit control system and earphone |
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