CN108307262B - Multifunctional stretchable earphone and control method - Google Patents
Multifunctional stretchable earphone and control method Download PDFInfo
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- CN108307262B CN108307262B CN201710021658.4A CN201710021658A CN108307262B CN 108307262 B CN108307262 B CN 108307262B CN 201710021658 A CN201710021658 A CN 201710021658A CN 108307262 B CN108307262 B CN 108307262B
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- 238000000034 method Methods 0.000 title claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 20
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- 230000004044 response Effects 0.000 claims description 17
- 239000000806 elastomer Substances 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 16
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 13
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 9
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 8
- 229910052733 gallium Inorganic materials 0.000 claims description 8
- 229920001187 thermosetting polymer Polymers 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000013329 compounding Methods 0.000 claims description 6
- 229910000846 In alloy Inorganic materials 0.000 claims description 4
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 4
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000004148 unit process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052753 mercury Inorganic materials 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
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- 238000003825 pressing Methods 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 4
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Classifications
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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
- H04R1/1033—Cables or cables storage, e.g. cable reels
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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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
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention provides a multifunctional stretchable earphone which comprises an earphone plug, an earphone wire, an earphone loudspeaker accessory and an earphone wire control circuit, wherein the earphone wire is a stretchable super-elastic wire. The earphone not only can realize the transmission function of sound, such as music playing, answering a call and the like, but also can realize a plurality of control functions, such as opening, closing and pause control of a sound source, volume adjustment, selection of played tracks, switching of a telephone and multimedia and the like, by stretching the super-elastic wire to different lengths and pressing the super-elastic wire for different times within a set time, has the characteristics of portability and intelligence, and has good application prospect.
Description
Technical Field
The invention relates to the technical field of earphones, in particular to a multifunctional stretchable earphone and a control method thereof.
Background
The common lead is generally formed by a metal lead, but the tensile property and the repeated bending property of the common lead are poor, and the common lead cannot meet the use of some dynamic occasions, such as a robot arm connecting lead. For example, chinese patent application No. 200620090447.3 "scalable electric wire, cable" and application No. CN86203746 "elastic wire and cable" disclose two kinds of wires having stretchability, which are all composed of a rubber strip as the center of the wire and a conductor wound around the rubber strip, and have advantages of having a certain stretchability, but the stretching range is very limited, and the metal conductor inevitably has a metal fatigue problem, if repeated stretching and bending can cause breakage of the metal conductor, so that the above two kinds of products still have a serious problem of short service life in practical application.
Meanwhile, due to the popularization of electronic products, the earphone is widely applied to daily life of people. At present, most headphones are only used for sound transmission, and the functions of opening, closing and suspending the sound source, adjusting the volume, selecting the playing track, switching between the phone and the multimedia are generally controlled on computers, mobile phones, MP3 s and other players, which causes inconvenient use, for example, when the headphones are used outdoors, etc., the computers, mobile phones, MP3 s and other multimedia players need to be taken out from the package to perform the functions of closing/opening/suspending the playing, adjusting the volume, advancing or reversing, etc.
Disclosure of Invention
In view of the above state of the art, the present invention provides a multifunctional stretchable earphone, which not only has a sound transmission function, but also can realize control functions of opening, closing and pausing a sound source, adjusting volume, selecting a playing track, switching between a telephone and multimedia, and the like.
The utility model provides a multi-functional stretchable earphone, includes earphone plug, earphone wire and earphone loudspeaker accessory, characterized by: the earphone wire control circuit comprises an impedance signal processing module and a control module;
the earphone plug comprises four poles, namely a first pole left sound channel end, a second pole right sound channel end, a third pole microphone end (MIC) and a fourth pole ground line end;
after the voltage of the earphone plug MIC is converted, power is supplied to each module of the wire control circuit; the earphone plug is an international standard 3.5mm earphone plug, the first pole is a left sound channel, the second pole is a right sound channel, the third pole is a microphone end (MIC), and the fourth pole is a ground wire;
the earphone wire is a stretchable super-elastic wire and consists of four wires, which are respectively called as wires A, B, C, D, wherein one end of each wire A, B, C is respectively connected with a first pole, a second pole and a fourth pole of the earphone plug, and the other ends of the wires are connected to earphone horn fittings; one end of the lead D is connected with a third pole of the plug, and the other end of the lead D is connected with the impedance signal processing module;
the impedance signal processing module is used for collecting current signals on the lead D and converting the current signals into impedance response signals; the impedance response signal is processed by a control module;
when the earphone is in a working state, the wire D is stretched, an impedance response signal is obtained after the wire D is processed by the impedance signal processing module, then the impedance variation is obtained after the wire D is processed by the control module, when the wire D is stretched to different lengths, different impedance variation is obtained, and different earphone wire control functions are realized according to the different impedance variation; or stretching or pinching the wire D for a plurality of times within a set time, processing the wire D by an impedance signal processing module to obtain an impedance response signal, processing the impedance response signal by a control module to obtain the impedance change times within the set time, and obtaining different impedance change times when the wire D is stretched or pinched for different times within the set time, and realizing different earphone wire control functions according to the different impedance change times.
The earphone drive-by-wire functions include, but are not limited to, on/off and pause control of sound sources, volume adjustment (e.g., "turn volume up" and "turn volume down"), selection of a play track (e.g., "last" and "next"), switching between telephone and multimedia (e.g., "answer or hang up"), etc.
The stretchable super-elastic wire means that the wire can be stretched, and after the wire is stretched to a certain length under the action of external force, the wire can be restored to the original length when the external force is withdrawn.
The stretching is performed by extending the length along the length direction of the wire, and the pinching is performed by compressing the width along the width direction of the section of the wire.
As one implementation, the stretchable super-elastic wire is composed of a super-elastomer and a liquid metal in a compounding way;
the super elastomer material is not limited and comprises a thermoplastic elastomer and a thermosetting elastomer;
the liquid metal is a metal conductive material which is liquid at room temperature, and comprises mercury, gallium indium alloy, gallium indium tin alloy, transition group metal, one or more doped gallium indium alloy of solid nonmetallic elements and gallium indium tin alloy.
The compounding mode of the super elastomer and the liquid metal is not limited. As a composite method, when a thermoplastic elastomer or a thermosetting elastomer is molded, the elastomer is prepared into a tubular structure by using a mold, then liquid metal is poured into the tubular structure at room temperature, and a stretchable super-elastic wire is obtained after sealing. As another compounding method, a thermoplastic elastomer or a thermosetting elastomer is heated to an elastic substrate, then a liquid metal is coated on the surface of the elastic substrate, and then a thermoplastic elastomer or a thermosetting elastomer in a molten state or in a liquid state is coated on the surface of the liquid metal, and after solidification, a stretchable super-elastic wire is formed.
As one implementation manner, the impedance signal processing module comprises a sampling resistor and a differential amplifying circuit; the control module comprises an analog-to-digital conversion circuit, a singlechip processing unit and a triode on-off control circuit;
the sampling resistor is connected with the lead D, the non-inverting input end of the differential amplifying circuit is connected with one end of the sampling resistor, the inverting input end of the differential amplifying circuit is connected with the other end of the sampling resistor, the output end of the differential amplifying circuit is connected with one end of the analog-to-digital conversion circuit, the other end of the analog-to-digital conversion circuit is connected with one end of the singlechip processing unit, and the other end of the singlechip processing unit is connected with the triode on-off control circuit;
the impedance response signals output by the differential amplifying circuit are processed by the singlechip processing unit to obtain different impedance variation amounts of the lead D or different impedance variation times within a set time, so that the on-off of different triodes is controlled, and different functions of the earphone drive-by-wire are realized.
The earphone wire control circuit can also comprise an electric communication module; the lead A, B, C comprises two parts, namely a lead A consists of a lead A-1 and a lead A-2, a lead B consists of a lead B-1 and a lead B-2, and a lead C consists of a lead C-1 and a lead C-2; the wire A-1 is communicated with the wire A-2 through an electric communication module, the wire B-1 is communicated with the wire B-2 through an electric communication module, and the wire C-1 is communicated with the wire C-2 through an electric communication module.
The method for realizing the control function by utilizing the multifunctional stretchable earphone comprises the following steps:
method 1: stretching the wires D to different lengths
(1) Setting the original length of the lead D as L, setting the tensile lead D to different lengths to realize different control functions, and controlling the on-off of different triodes by different outputs of the singlechip processing unit according to the set relation;
(2) When in use, a user wants to realize a certain control function, and stretches the lead D to the corresponding length according to the set relation.
In order to prevent erroneous operation, it is preferable to delay for a certain time after stretching the wire D to a set length.
When the control function of turning up the volume or turning down the volume is realized, it is preferable that the wire D is stretched to a set length and then kept in a stretched state until the volume is adjusted to a desired volume.
Method 2: stretching the wire D for a certain time
(1) The original length of the lead D is L, different times of stretching the lead D within a certain time are set to realize different control functions, and different outputs of the singlechip processing unit are used for controlling the on-off of different triodes according to the set relation;
(2) When the device is used, a user hopes to realize a certain control function, and the corresponding times of the wire D are pulled in a certain time according to the set relation.
When the function of turning up the volume or turning down the volume is achieved, it is preferable to stretch the wire D to a set number of times and then maintain the stretched state until the volume is adjusted to a desired volume.
Method 3: pressing the wire D for a certain time
(1) The longitudinal diameter of the lead D is W, the length of the lead D is L, the lead D is set to be pinched for different times in a certain time to realize different control functions, and according to the set relation, different outputs of the singlechip processing unit are used for controlling the on-off of different triodes;
(2) When in use, a user wants to realize a certain control function, and presses the wire D corresponding times in a certain time according to the set relation.
When the function of turning up the volume or turning down the volume is realized, it is preferable that the wire D is pinched for a set number of times and then the pinched state is maintained until the desired volume is adjusted.
In summary, the earphone plug, the stretchable super-elastic wire, the earphone speaker fitting and the earphone wire control circuit are integrated to form the multifunctional stretchable earphone, so that not only can the transmission function of sound be realized, such as music playing, phone answering and the like, but also a plurality of control functions, such as the opening, closing and pause control of a sound source, the adjustment of the volume level (such as the adjustment of the volume level, the selection of the playing track (such as the adjustment of the volume level, the adjustment of the volume level), the selection of the playing track (such as the adjustment of the previous or next), the switching of the phone and the multimedia (such as the adjustment of the phone answering or the phone hanging up) and the like, can be realized by stretching the super-elastic wire D to different lengths and pressing the super-elastic wire D for different times within a set time. In addition, the earphone can be deformed in multiple stretching, torsion, folding and the like, has the characteristics of portability and intelligence, and has good application prospect in the aspect of multifunctional stretchable earphone.
Drawings
Fig. 1 is a schematic structural diagram of a multifunctional stretchable earphone in embodiment 1 of the present invention;
fig. 2 is an enlarged view of the earphone plug of fig. 1;
fig. 3 is a block diagram of the earphone line control circuit in fig. 1.
The reference numerals in fig. 1-3 are: the earphone comprises an earphone plug 1, a first part of super-elastic lead wire 2, a super-elastic lead wire 3, a second part of super-elastic lead wire 4, an earphone horn accessory 5, an earphone wire control circuit 6, an impedance signal processing module 7, a high-precision sampling resistor 8, a differential amplifying circuit 9, a control module 10, an analog-to-digital conversion circuit 11, a singlechip processing unit 12, a triode on-off control circuit 13, a first pole 14, a second pole 15, a third pole 16 and a fourth pole 17.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings and examples, which are intended to facilitate an understanding of the invention and are not to be construed as limiting in any way.
As shown in fig. 1-2, the multifunctional stretchable earphone in this embodiment includes an earphone plug 1, earphone wires, and an earphone speaker fitting 5.
The earphone wire is a stretchable super-elastic wire and consists of two parts, namely a first part of super-elastic wire 2 and a second part of super-elastic wire 4. An earphone wire control circuit 6 is disposed between the first portion of super elastic wire 2 and the second portion of super elastic wire 4, as shown in fig. 3, the earphone wire control circuit 6 includes an impedance signal processing module 7 and a control module 10, and besides the impedance signal processing module 7 and the control module 10, the earphone wire control circuit 6 further includes an electrical communication module, so as to realize an electrical communication function.
The first portion of superelastic wire 2 is composed of four wires, respectively designated wire A-1, wire B-1, wire C-1, and wire D, where wire D is shown as 3 in FIG. 1. The second portion of the superelastic wire 4 is composed of three wires, respectively referred to as wire A-2, wire B-2, and wire C-2.
In this embodiment, the earphone plug is an international standard 3.5mm earphone plug, as shown in fig. 2, where the earphone plug includes four poles, i.e., a first pole, a second pole, a third pole, and a fourth pole in order. The first pole is the left channel end, the second pole is the right channel end, the third pole is the microphone end (MIC), and the fourth pole is the ground terminal. After the voltage of the earphone plug MIC is converted, a power supply is provided for each module of the earphone wire control circuit.
One end of the wire A-1 is connected with the first pole of the earphone plug 1, the other end is communicated with one end of the wire A-2 through an electric communication module of the earphone wire control circuit 6, and the other end of the wire A-2 is connected to the earphone horn fitting 5.
One end of the wire B-1 is connected with the second pole of the earphone plug 1, the other end of the wire B-1 is communicated with one end of the wire B-2 through an electric communication module of the earphone wire control circuit 6, and the other end of the wire B-2 is connected to the earphone horn fitting 5.
One end of the wire C-1 is connected with the fourth pole of the earphone plug 1, the other end of the wire C-1 is communicated with one end of the wire C-2 through an electric communication module of the earphone wire control circuit 6, and the other end of the wire C-2 is connected to the earphone horn fitting 5.
One end of the wire D is connected with a third pole of the earphone plug 1, and the other end of the wire D is connected with an impedance signal processing module 7 of the earphone wire control circuit 6.
As shown in fig. 3, the impedance signal processing module 7 includes a high-precision sampling resistor 8 and a differential amplifying circuit 9. The control module 10 comprises an analog-to-digital conversion circuit 11, a singlechip processing unit 12 and a triode on-off control circuit 13;
the high-precision sampling resistor 8 is connected with the lead D, the non-inverting input end of the differential amplification circuit 9 is connected with one end of the high-precision sampling resistor 8, the inverting input end of the differential amplification circuit is connected with the other end of the high-precision sampling resistor 8, the output end of the differential amplification circuit 9 is connected with one end of the analog-to-digital conversion circuit 11, the other end of the analog-to-digital conversion circuit 11 is connected with one end of the single chip microcomputer processing unit 12, and the other end of the single chip microcomputer processing unit 12 is connected with the triode on-off control circuit 13.
The impedance response signal output by the differential amplifying circuit 8 is sampled and subjected to analog-to-digital conversion by the analog-to-digital conversion circuit 11 to obtain a digital signal, and the single chip microcomputer processing unit 12 processes the digital signal to obtain different impedance variation amounts of the lead D or different impedance variation times within a set time, so that the on-off of different triodes is controlled, and the function of earphone wire control is realized.
The stretchable superelastic wire in the embodiment is formed by compounding a superelastic body and an electric conductor, and the elastic tube is filled with liquid metal. Wherein the super-elastomer is selected from thermoplastic elastomer, the liquid metal is GaInSn or GaIn alloy, and the conductivity of the liquid metal is better than 3.8x10 6 s/m. The compounding method of the super elastic lead comprises the following steps: at room temperature, liquid GaInSn or GaIn alloy is poured into the super-elastic tubular hole, and the conductive joint directly seals the pipe hole to manufacture the super-elastic lead.
In this embodiment, the wire can be stretched to 9 times its original length under the action of an external force, and the wire can be restored to its original length when the external force is removed.
The multifunctional stretchable earphone in the embodiment can realize the control functions of playing or pausing, last one, next one, volume up, volume down, call answering or hanging up and the like of the earphone, and the specific method is as follows:
method 1: stretching the wires D to different lengths
The original length of the lead D is L, and the following corresponding relation is set:
when the wires D to N are stretched 1 Realizing the playing function during L time;
when the wires D to N are stretched 2 Realizing a pause function during L;
when the wires D to N are stretched 3 The function of playing the song is realized during the L time;
when the wires D to N are stretched 4 Realizing the function of playing the next song during L;
when the wires D to N are stretched 5 The function of volume up is realized during L;
when the wires D to N are stretched 6 The function of reducing the volume is realized during L;
when the wires D to N are stretched 7 Realizing the function of answering the call during L;
when the wires D to N are stretched 8 The function of hanging up the telephone is realized during the L time;
wherein N is 1 ～N 8 Are all numbers greater than 1 and less than 9 and are mutually unequal, N being effective in order to facilitate the user in distinguishing the variations in length 1 ～N 8 The whole numbers are taken.
And according to the set corresponding relation, controlling the on-off of different triodes by different outputs of the singlechip processing unit.
In the operating state, the user stretches the wire D to a corresponding length according to the corresponding relation set in order to realize a certain control function (for example, the user stretches the wire D to N when he wants to play a next song 4 L), the power supply supplies power, the high-precision sampling resistor collects current signals on the lead D, the current signals are converted into voltage signals, impedance response signals are output after passing through the differential amplifying circuit, then the impedance response signals are sampled and subjected to analog-to-digital conversion by the analog-to-digital conversion circuit to obtain digital signals, the single chip microcomputer processing unit processes the digital signals to obtain impedance variation of the lead D, and accordingly on-off of corresponding triodes is controlled, and the set earphone wire control function is achieved.
In order to prevent the erroneous operation, a delay time is performed for a certain time after the wire D is stretched to a set length.
When the control function of volume up or volume down is realized, the wire D is stretched to a set length and then kept in a stretched state until the required volume is adjusted.
Method 2: stretching the wire D for different times within a set time
The original length of the wire D is L, the wires D to NL are stretched, the set time is S seconds, the number of times of stretching the wire D in S seconds is recorded, and the following corresponding relation is set:
stretching for 1 time in S seconds to realize the playing function;
stretching for 2 times in S seconds to realize the function of pause;
stretching for 3 times in S seconds to realize the function of playing the last one;
stretching for 4 times in S seconds to realize the function of playing the next song;
stretching for 5 times in S seconds to realize the function of volume adjustment;
stretching for 6 times in S seconds to realize the function of reducing volume;
stretching for 7 times in S seconds to realize the function of answering the call;
and stretching for 8 times in S seconds to realize the function of hanging up the telephone.
Where N is greater than 1 and less than 9, S is preferably greater than 5 seconds for ease of use to enable the wire D to be drawn from the container, with S being selected to be 6 seconds in this embodiment.
And according to the set corresponding relation, controlling the on-off of different triodes by different outputs of the singlechip processing unit.
In order to realize a certain control function, according to the set corresponding relation, a user stretches the wire D for different times within 6 seconds (for example, the user wants to play a next song and stretches the wire D for 4 times within 6 seconds), the power supply is supplied, the high-precision sampling resistor collects a current signal on the wire D, converts the current signal into a voltage signal, outputs an impedance response signal after passing through the differential amplifying circuit, then samples and carries out analog-to-digital conversion through the analog-to-digital conversion circuit to obtain a digital signal, and the singlechip processing unit processes the digital signal to obtain the impedance change times of the wire D within 6 seconds, so that the on-off of a corresponding triode is controlled, and the set earphone wire control function is realized.
When the function of turning up the volume or turning down the volume is realized, the wire D is pulled for a predetermined number of times in S seconds, and then the pulled state is maintained until the desired volume is adjusted.
Method 3: pressing the wire D for different times within a set time
Setting the longitudinal diameter of the wire D as W, pinching the wire D to reduce the longitudinal diameter, setting the time as S seconds, recording the times of pinching the wire D in the S seconds, and setting the following corresponding relation:
pressing for 1 time in S seconds to realize the playing function;
pressing for 2 times in S seconds to realize the function of pause;
pressing for 3 times in S seconds to realize the function of playing the last one;
pressing for 4 times in S seconds to realize the function of playing the next song;
pressing for 5 times in S seconds to realize the function of volume adjustment;
pressing for 6 times in S seconds to realize the function of reducing volume;
pressing for 7 times in S seconds to realize the function of answering the call;
pressing for 8 times in S seconds realizes the function of hanging up the telephone.
And according to the set corresponding relation, controlling the on-off of different triodes by different outputs of the singlechip processing unit.
In order to enable the user to gently hold the wire D, S is preferably greater than 5 seconds, the present embodiment selects S to be 6 seconds.
In order to realize a certain control function, according to the set corresponding relation, a user presses the wire D for different times within 6 seconds (for example, the user hopes to play a next song and presses the wire D for 4 times within 6 seconds), the power supply is supplied, the high-precision sampling resistor collects a current signal on the wire D, converts the current signal into a voltage signal, outputs an impedance response signal after passing through the differential amplifying circuit, then samples and carries out analog-to-digital conversion through the analog-to-digital conversion circuit to obtain a digital signal, and the singlechip processing unit processes the digital signal to obtain the impedance change times of the wire D within 6 seconds, so that the on-off of a corresponding triode is controlled, and the set earphone wire control function is realized.
When the function of turning up the volume or turning down the volume is realized, after the wire D is pressed for a set number of times in S seconds, the pressed state is maintained until the required volume is adjusted.
The foregoing embodiments have described the technical solutions and advantageous effects of the present invention in detail, and it should be understood that the foregoing embodiments are merely illustrative of the present invention and are not intended to limit the invention, and any modifications and improvements made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a multi-functional stretchable earphone, includes earphone plug, earphone wire and earphone loudspeaker accessory, characterized by: the earphone wire control circuit comprises an impedance signal processing module and a control module;
the earphone plug comprises four poles, namely a first pole left sound channel end, a second pole right sound channel end, a third pole microphone end and a fourth pole ground terminal;
the earphone wire is a stretchable super-elastic wire and consists of four wires, which are respectively called as wires A, B, C, D, wherein one end of each wire A, B, C is respectively connected with a first pole, a second pole and a fourth pole of the earphone plug, and the other ends of the wires are connected to earphone horn fittings; one end of the lead D is connected with a third pole of the plug, and the other end of the lead D is connected with the impedance signal processing module;
the impedance signal processing module is used for collecting the current signal on the lead D and converting the current signal into an impedance response signal, and the impedance response signal is processed by the control module;
the stretchable super-elastic wire is formed by compounding a super-elastomer and liquid metal; the super elastomer material comprises a thermoplastic elastomer and a thermosetting elastomer;
when the thermoplastic elastomer or the thermosetting elastomer is molded, preparing the elastomer into a tubular structure by utilizing a die, then filling liquid metal into the tubular structure at room temperature, and sealing to obtain the stretchable super-elastic lead;
or heating the thermoplastic elastomer or the thermosetting elastomer to form an elastic substrate, coating liquid metal on the surface of the elastic substrate, coating the thermoplastic elastomer or the thermosetting elastomer in a molten state or in a liquid state on the surface of the liquid metal, and curing to form the stretchable super-elastic wire;
when the earphone is in a working state, the wire D is stretched, an impedance response signal is obtained after the wire D is processed by the impedance signal processing module, then the impedance variation is obtained after the wire D is processed by the control module, when the wire D is stretched to different lengths, different impedance variation is obtained, and different earphone wire control functions are realized according to the different impedance variation; or stretching or pinching the wire D for a plurality of times within a set time, processing the wire D by an impedance signal processing module to obtain an impedance response signal, processing the impedance response signal by a control module to obtain the impedance change times within the set time, and obtaining different impedance change times when the wire D is stretched for different times within the set time, and realizing different earphone wire control functions according to the different impedance change times.
2. The multi-functional stretchable earphone of claim 1, wherein: the earphone wire control function comprises the control of opening, closing and pausing of a sound source, adjustment of volume, selection of playing tracks and switching of telephones and multimedia.
3. The multi-functional stretchable earphone of claim 1, wherein: the impedance signal processing module comprises a sampling resistor and a differential amplifying circuit; the control module comprises an analog-to-digital conversion circuit, a singlechip processing unit and a triode on-off control circuit;
the sampling resistor is connected with the lead D, the non-inverting input end of the differential amplifying circuit is connected with one end of the sampling resistor, the inverting input end of the differential amplifying circuit is connected with the other end of the sampling resistor, the output end of the differential amplifying circuit is connected with one end of the analog-to-digital conversion circuit, the other end of the analog-to-digital conversion circuit is connected with one end of a minimum system of the singlechip, and the other end of the singlechip processing unit is connected with the triode on-off control circuit;
the impedance response signals output by the differential amplifying circuit are sampled by the analog-to-digital conversion circuit and are subjected to analog-to-digital conversion to obtain digital signals, and the single chip microcomputer processing unit processes the digital signals to obtain different impedance variation amounts of the lead D or different impedance variation times within a set time, so that the on-off of different triodes is controlled, and the function of earphone wire control is realized.
4. The multi-functional stretchable earphone of claim 1, wherein: the earphone wire control circuit also comprises an electric communication module, wherein the wire A, B, C respectively comprises two parts, namely a wire A consists of a wire A-1 and a wire A-2, a wire B consists of a wire B-1 and a wire B-2, a wire C consists of a wire C-1 and a wire C-2, the wire A-1 is communicated with the wire A-2 through the electric communication module, the wire B-1 is communicated with the wire B-2 through the electric communication module, and the wire C-1 is communicated with the wire C-2 through the electric communication module.
5. The multi-functional stretchable earphone of any of claims 1-4, wherein: the liquid metal comprises one or more doped gallium indium alloy and gallium indium tin alloy of mercury, gallium indium alloy, gallium indium tin alloy, transition group metal and solid nonmetallic element.
6. A method for implementing a control function using a multi-functional stretchable earphone according to any of claims 1-4, characterized by: comprises the following steps of
(1) Setting the original length of the lead D as L, setting the tensile lead D to different lengths to realize different control functions, and controlling the on-off of different triodes by different outputs of the singlechip processing unit according to the set relation;
(2) When in use, a user wants to realize a certain control function, and stretches the lead D to the corresponding length according to the set relation.
7. A method for implementing a control function using a multi-functional stretchable earphone according to any of claims 1-4, characterized by: comprises the following steps of
(1) The original length of the lead D is L, different times of stretching the lead D within a certain time are set to realize different control functions, and different outputs of the singlechip processing unit are used for controlling the on-off of different triodes according to the set relation;
(2) When the device is used, a user hopes to realize a certain control function, and the corresponding times of the wire D are pulled in a certain time according to the set relation.
8. A method for implementing a control function using a multi-functional stretchable earphone according to any of claims 1-4, characterized by: comprises the following steps of
(1) The longitudinal diameter of the lead D is W, the length of the lead D is L, the lead D is set to be pinched for different times in a certain time to realize different control functions, and according to the set relation, different outputs of the singlechip processing unit are used for controlling the on-off of different triodes;
(2) When in use, a user wants to realize a certain control function, and presses the wire D corresponding times in a certain time according to the set relation.
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