CN206894852U - A kind of bluetooth earphone with hearing-aid function - Google Patents
A kind of bluetooth earphone with hearing-aid function Download PDFInfo
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- CN206894852U CN206894852U CN201720805952.XU CN201720805952U CN206894852U CN 206894852 U CN206894852 U CN 206894852U CN 201720805952 U CN201720805952 U CN 201720805952U CN 206894852 U CN206894852 U CN 206894852U
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- circuit
- microphone
- electric capacity
- bluetooth earphone
- chip microcomputer
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Abstract
The utility model discloses a kind of bluetooth earphone with hearing-aid function, including：Microphone circuit, horn circuit and processor circuit, microphone circuit, horn circuit are electrically connected with processor circuit respectively；Microphone circuit is used for typing external sound signal, and typing voice signal is converted into electric signal and is sent to processor circuit, and processor circuit is used to the electric signal that microphone is sent being sent to horn circuit after treatment and played back by loudspeaker；Bluetooth earphone is provided with function button, and processor is used for the signal of receive capabilities button and controls the working condition of microphone circuit, horn circuit, so as to be turned on and off the hearing-aid function of bluetooth earphone.External sound signal is played to human ear by conversion and listened, so as to avoid causing danger because user can't hear external sound when making a phone call or playing music by the utility model by the microphone of shared bluetooth earphone.
Description
Technical field
It the utility model is related to a kind of bluetooth earphone, more particularly to a kind of bluetooth earphone with hearing-aid function.
Background technology
In general, many people prefer to listen music with earphone or made a phone call, especially bluetooth earphone, due to indigo plant
The lightweight of tooth earphone, receives an acclaim very much.But when taking earphone and listening music or make a phone call, and earpiece volume is opened
It when smaller, can be covered substantially by the sound in the external world, influence the effect for making a phone call or listening music；When earpiece volume reaches enough
When big, the sound in the external world is substantially can't hear, for example pedestrian is walked on road, can't hear voice, the car engine in the external world substantially
Machine sound and vehicle whistle sound etc., so it is easy to cause danger.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of bluetooth with hearing-aid function
Earphone, it can solve the problem that the problem of user can not hear external sound when using bluetooth earphone in the prior art.
The purpose of this utility model adopts the following technical scheme that realization：
A kind of bluetooth earphone with hearing-aid function, including：Microphone circuit, horn circuit and processor circuit, it is described
Microphone circuit, horn circuit are electrically connected with processor circuit respectively；The microphone circuit is believed for typing external sound
Number and the external sound signal of typing be converted into electric signal be sent to processor circuit, the processor circuit is used for Mike
The electric signal that wind is sent is sent to horn circuit and played back by loudspeaker after treatment；
The bluetooth earphone is provided with function button, and the processor circuit is used for the signal of receive capabilities button and controls wheat
Gram wind-powered electricity generation road, the working condition of horn circuit, so as to be turned on and off the hearing-aid function of bluetooth earphone.
Further, the processor circuit includes single-chip microcomputer U1, and the single-chip microcomputer U1 is provided with first input end, second defeated
Enter end, the first output end, the second output end and the 3rd output end；First input end, the second input, the first output end difference
It is electrically connected with microphone circuit；Second output end, the 3rd output end are connected with horn circuit respectively.
Further, the processor circuit includes switch and the 6th resistance, and the single-chip microcomputer U1 is provided with the 3rd input,
Single-chip microcomputer U1 the 3rd input is connected with the one end switched, and the other end of switch is connected by the 6th resistance with supply voltage；
The single-chip microcomputer U1 is used for the push button signalling for receiving switch and controls microphone to electric signal corresponding to microphone circuit transmission
Working condition.
Further, the microphone circuit includes microphone, the first inductance, the second inductance, the first electric capacity, the second electricity
Appearance, the 3rd electric capacity, first resistor and second resistance；One end of the microphone pass sequentially through the first inductance, the second electric capacity with
Single-chip microcomputer U1 first input end connection；The other end of microphone passes sequentially through the second inductance, the 3rd electric capacity with single-chip microcomputer U1's
Second input connects；One end of the first resistor is connected between the first inductance and the second electric capacity, the other end is by first
Capacity earth；One end of the second resistance is connected between the second inductance and the 3rd electric capacity, other end ground connection；The single-chip microcomputer
U1 the first output end is connected between the first electric capacity and first resistor.
Further, the horn circuit includes 3rd resistor, the 4th resistance, the 4th electric capacity, the 5th electric capacity and loudspeaker；Institute
The one end for stating loudspeaker is connected by 3rd resistor with single-chip microcomputer U1 the second output end, the other ends of loudspeaker by the 4th resistance with
Single-chip microcomputer U1 the 3rd output end connection；One end of 4th electric capacity is connected between loudspeaker and 3rd resistor, another termination
Ground；One end of 5th electric capacity is connected between loudspeaker and the 4th resistance, other end ground connection.
Further, the model Bluetooth chip AB1526 of the single-chip microcomputer U1.
Compared with prior art, the beneficial effects of the utility model are：
External sound signal can be converted to electric signal and be passed through by the utility model by the microphone of shared bluetooth earphone
Play to human ear after crossing processor processing and listen, can not so as to avoid user due to when calling back or playing music
Hear external sound and cause danger.
Brief description of the drawings
Fig. 1 is the module diagram of bluetooth earphone provided by the utility model；
Fig. 2 is the circuit diagram of processor circuit provided by the utility model；
Fig. 3 is the circuit diagram of microphone circuit provided by the utility model；
Fig. 4 is the circuit diagram of horn circuit provided by the utility model.
Embodiment
Below, with reference to accompanying drawing and embodiment, the utility model is described further, it is necessary to explanation is,
On the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
Embodiment
When taking earphone again to solve people, when not influenceed by the sound in the external world, the utility model provides one kind
Bluetooth earphone with hearing-aid function, in other words, when pedestrian is gone on road, by opening hearing-aid function, it becomes possible to listen
Voice, automobile engine sound or vehicle whistle sound to the external world etc., so as to make a response avoid that traffic accident occurs；And
When not needing hearing aid, hearing-aid function is closed.In general, on the market there is also the bluetooth earphone with hearing-aid function, but
It is that it is typically all separately to handle the processor of the microphone of hearing aid and earphone, is in other words then needed for the microphone of hearing aid
To configure in addition, which results in during the earphone that hearing-aid function is needed as people, it is necessary to buy businessman offer it is supporting
Microphone, to for making troubles.In addition, for earphone, microphone itself is come with, therefore, the utility model is just
It is that hearing-aid function is realized in the cooperation of the microphone and earphone that are carried using bluetooth earphone in itself, good body is brought to user
Test.
In order to solve the above problems, the utility model employs high-end Bluetooth chip AB1526 to combine bluetooth earphone itself
The microphone of institute's band realizes the bluetooth earphone with hearing-aid function.Such as bluetooth earphone be first powered on after completed by Bluetooth protocol
With the pairing of mobile device, in start, standby or listen long-press function key under the states such as music to open hearing-aid function after 2 seconds, so
The extraneous voice signal received is converted to electric signal by microphone afterwards, and is sent to Bluetooth chip AB1526, so as to by outside
The sound on boundary is communicated to user, call user's attention safety by loudspeaker.In addition, the microphone uses the wheat of bluetooth earphone
Gram wind.
The process that acoustical signal is converted to electric signal is also applied in the utility model, its principle is as follows：Can by electrostatics
Know there is following relation for plane-parallel capacitor：C=ε S/L.It that is to say the capacity of electric capacity and the permittivity ε of medium into just
Than, it is directly proportional to the area S of two pole plates, be inversely proportional with the distance between two pole plates L；In addition when a capacitor is filled with Q
Measure electric charge, then two pole plates of capacitor will form certain voltage, there is following relation C=Q/V.It is transaudient for an electret
A capacitor being made up of vibrating diaphragm, pad and pole plate be present inside device (microphone), because filled with electric charge on diaphragm, and be
One plastic foil, therefore when diaphragm is acted on by sound pressure, diaphragm will produce vibration, so as to change between diaphragm and pole plate
Distance, so as to change the distance between two pole plates of capacitor, generate Δ d change, therefore by formula C=
ε S/L are understood, must be produced Δ C change, be learnt by formula C=Q/V, due to Δ C change, charging charge is again
It is changeless, necessarily leads to Δ V change.
Because this signal is very faint, internal resistance is very high, it is impossible to directly uses, therefore to carry out impedance conversion with putting
Greatly.
FET FETs are a voltage controlled elements, and the output current of drain electrode is controlled by source electrode and grid voltage.By
It is the S poles and G poles for being connected to FET in two poles of capacitor, therefore has added a Δ v between the S poles and G poles equivalent to FET
Variable quantity, FET drain current I just produces Δ ID variable quantity, therefore the variable quantity of this electric current is just in resistance RL
One Δ VD of upper generation variable quantity, the variable quantity can of this voltage are exported by electric capacity C0, the variable quantity of this voltage
It is as caused by acoustic pressure, therefore whole microphone just completes the transfer process of an acoustic-electric
As shown in figure 1, the bluetooth earphone provided by the utility model with hearing-aid function comprise at least microphone circuit,
Processor circuit and horn circuit, microphone circuit are used to the external sound signal received is converted into electric signal and is sent to
Processor circuit, processor circuit are used to be handled the electric signal that microphone circuit is sent and are converted to voice signal and lead to
Cross horn circuit and play to human ear and listen.Under hearing-aid function, so as to which the voice signal in the external world by conversion process and is passed through
Earphone horn plays to human ear and listened, and can avoid that traffic thing occurs because people can't hear extraneous sound with bluetooth earphone
Therefore.
Wherein, as shown in Fig. 2 processor circuit includes single-chip microcomputer U1 and interlock circuit, wherein single-chip microcomputer U1 uses type
Number it is Bluetooth chip AB1526.
Single-chip microcomputer U1 is respectively equipped with first input end, the second input (pin A4, pin B5 in such as Fig. 2), single-chip microcomputer U1
Pass through the connection corresponding with microphone circuit respectively of first input end, the second input.It that is to say, pass through pin A4 and Mike's wind-powered electricity generation
Road is electrically connected with, for receiving the first electric signal MIC1_P of microphone circuit transmission；Pass through pin B5 and microphone circuit electricity
Property connection, for receive microphone circuit transmission the second electric signal MIC1_N.
Single-chip microcomputer U1 is additionally provided with the second output end, the 3rd output end (pin C2, pin D2 in such as Fig. 2), single-chip microcomputer U1
By the connection corresponding with horn circuit respectively of the second output end, the 3rd output end, it that is to say, pass through pin C2 and horn circuit electricity
Property connection, for horn circuit export the second output signal SPK_LP；Also pass through the 3rd input of pin D2 and horn circuit
End connection, for exporting the 3rd output signal SPK_LN.
It that is to say, single-chip microcomputer U1 is used for the first electric signal MIC1_P, the second electric signal MIC1_ for sending microphone circuit
N is converted to the second output signal SPK_LP, the 3rd output signal SPK_LN to horn circuit after treatment, so that Mike
The voice signal of wind typing is played back by loudspeaker, to allow users to receiving calls by bluetooth earphone or listening music
The sound in the external world can also be audible Deng in the state of.
Preferably, processor circuit also includes switching S1 and the 6th resistance R6, and single-chip microcomputer U1 passes through pin F2 and switch S1
Connection, the one end for switching S1 is connected by the 6th resistance R6 with supply voltage VBAT.Single-chip microcomputer U1 pin F2 has time meter
Shi Gongneng, in other words when switch S1 is switched on, single-chip microcomputer U1 can obtain the turn-on time for the S1 that open the light by pin F2.
In addition, single-chip microcomputer U1 is additionally provided with the first output end (the pin A5 in such as Fig. 2), single-chip microcomputer U1 also passes through the first output
End is electrically connected with microphone circuit, and the first output end is used to export the 3rd electric signal MIC_BIAS, so as to control Mike's wind-powered electricity generation
The working condition on road.
In addition, also setting up a function button on bluetooth earphone, the function button is corresponding with switch S1.When user presses function
During button, switch S1 is connected, and single-chip microcomputer U1 sends the 3rd electric signal MIC_BIAS by the first output end to microphone circuit, from
And the working condition of microphone circuit is controlled, it that is to say the hearing-aid function for being turned on and off bluetooth earphone.
For example when bluetooth earphone is not under hearing-aid function, user presses the function key, and (time can be according to reality within 2 seconds
Use habit determine), now switch S1 in an ON state, then Bluetooth chip AB1526 sends the 3rd to microphone circuit
Electric signal MIC_BIAS (it is high potential), the hearing-aid function of bluetooth earphone is thus opened, now microphone circuit will be recorded
The voice signal of outside is taken to be converted to corresponding electric signal, then by it after Bluetooth chip AB1526 is handled electric signal
It is output to horn circuit and plays back, realize the hearing-aid function of bluetooth earphone, avoids user because making a phone call or playing sound
When happy, it can't hear the sound in the external world and cause danger.On the contrary, when bluetooth earphone is in hearing aid state, user wants closing and helped
During auditory function, the hearing-aid function of bluetooth earphone can be closed also according to aforesaid operations.
As shown in figure 3, microphone circuit includes microphone MIC, the first inductance L21, the second inductance L22, the first electric capacity
C21, the second electric capacity C22, the 3rd electric capacity C23, first resistor R21 and second resistance R22.
Wherein, microphone MIC one end passes sequentially through the first inductance L21, the first of the second electric capacity C22 and single-chip microcomputer U1 defeated
Enter end connection；The microphone MIC other end passes sequentially through the second inductance L22, the 3rd electric capacity C23 and single-chip microcomputer U1 the second input
End connection.
Second resistance R22 one end is connected between the 3rd electric capacity C23 and the second inductance L22, other end ground connection；First electricity
Resistance R21 one end is connected between the second electric capacity C22 and the first inductance L21, the other end is grounded by the first electric capacity C21.Monolithic
Machine U1 the first output end is also attached between the first electric capacity C 21 and first resistor R21.Microphone MIC is used to receive the external world
Voice signal.
Microphone circuit is used to the external sound signal that microphone MIC is enrolled being converted to the first electric signal MIC1_P, the
Two electric signal MIC1_N are simultaneously sent to single-chip microcomputer U1.
In addition, single-chip microcomputer U1 also inputs the 3rd electric signal MIC_BIAS by the first output end to microphone circuit, to control
The working condition of microphone circuit processed, and then control being turned on and off for the hearing-aid function of bluetooth earphone.
Microphone MIC model YHS4013 used by the utility model.
As shown in figure 4, horn circuit includes 3rd resistor R23, the 4th resistance R24, the 4th electric capacity C24, the 5th electric capacity C25
With loudspeaker SPK.Wherein one end of loudspeaker is connected by 3rd resistor R23 with single-chip microcomputer U1 the second output end, loudspeaker it is another
End is connected by the 4th resistance R24 with single-chip microcomputer U1 the 3rd output end, and one end of loudspeaker is also grounded by the 4th electric capacity C24.
5th electric capacity C25 one end is connected between loudspeaker and the 4th resistance R24, other end ground connection；4th electric capacity C24 one end connection
Between loudspeaker and 3rd resistor R23, other end ground connection.
Single-chip microcomputer U1 is by the second input, the 3rd input by the second output signal SPK_LP, the 3rd output signal
SPK_LN is sent to horn circuit, and sound is played back.
Above-mentioned embodiment is only preferred embodiment of the present utility model, it is impossible to is protected with this to limit the utility model
Scope, the change of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacing belongs to
In the utility model scope claimed.
Claims (6)
- A kind of 1. bluetooth earphone with hearing-aid function, it is characterised in that including：Microphone circuit, horn circuit and processor electricity Road, the microphone circuit, horn circuit are electrically connected with processor circuit respectively；It is extraneous that the microphone circuit is used for typing The external sound signal of typing is simultaneously converted to electric signal and is sent to processor circuit by voice signal, and the processor circuit is used for The electric signal that microphone is sent is sent to horn circuit after treatment and played back by loudspeaker；The bluetooth earphone is provided with function button, and the processor circuit is used for the signal of receive capabilities button and controls microphone The working condition of circuit, horn circuit, so as to be turned on and off the hearing-aid function of bluetooth earphone.
- 2. the bluetooth earphone of hearing-aid function is carried as claimed in claim 1, it is characterised in that：The processor circuit includes monolithic Machine U1, the single-chip microcomputer U1 are provided with first input end, the second input, the first output end, the second output end and the 3rd output End；First input end, the second input, the first output end are electrically connected with microphone circuit respectively；It is second output end, the 3rd defeated Go out end to be connected with horn circuit respectively.
- 3. the bluetooth earphone of hearing-aid function is carried as claimed in claim 2, it is characterised in that：The processor circuit includes switch With the 6th resistance, the single-chip microcomputer U1 is additionally provided with the 3rd input, and single-chip microcomputer U1 the 3rd input is connected with the one end switched, The other end of switch is connected by the 6th resistance with supply voltage；The single-chip microcomputer U1 be used for receive switch push button signalling and to The working condition of electric signal control microphone corresponding to microphone circuit transmission.
- 4. the bluetooth earphone of hearing-aid function is carried as claimed in claim 2, it is characterised in that：The microphone circuit includes Mike Wind, the first inductance, the second inductance, the first electric capacity, the second electric capacity, the 3rd electric capacity, first resistor and second resistance；The Mike One end of wind passes sequentially through the first inductance, the second electric capacity is connected with single-chip microcomputer U1 first input end；The other end of microphone according to It is secondary to be connected by the second inductance, the 3rd electric capacity with single-chip microcomputer U1 the second input；One end of the first resistor is connected to Between one inductance and the second electric capacity, the other end pass through the first capacity earth；One end of the second resistance is connected to the second inductance Between the 3rd electric capacity, other end ground connection；The first output end of the single-chip microcomputer U1 be connected to the first electric capacity and first resistor it Between.
- 5. the bluetooth earphone of hearing-aid function is carried as claimed in claim 2, it is characterised in that：The horn circuit includes the 3rd electricity Resistance, the 4th resistance, the 4th electric capacity, the 5th electric capacity and loudspeaker；One end of the loudspeaker pass through 3rd resistor and single-chip microcomputer U1 the Two output ends are connected, and the other end of loudspeaker is connected by the 4th resistance with single-chip microcomputer U1 the 3rd output end；4th electric capacity One end be connected between loudspeaker and 3rd resistor, the other end ground connection；One end of 5th electric capacity is connected to loudspeaker and the 4th Between resistance, the other end ground connection.
- 6. the bluetooth earphone of hearing-aid function is carried as described in claim 2-5 any one, it is characterised in that：The single-chip microcomputer U1 Model Bluetooth chip AB1526.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720805952.XU CN206894852U (en) | 2017-07-03 | 2017-07-03 | A kind of bluetooth earphone with hearing-aid function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720805952.XU CN206894852U (en) | 2017-07-03 | 2017-07-03 | A kind of bluetooth earphone with hearing-aid function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206894852U true CN206894852U (en) | 2018-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720805952.XU Expired - Fee Related CN206894852U (en) | 2017-07-03 | 2017-07-03 | A kind of bluetooth earphone with hearing-aid function |
Country Status (1)
| Country | Link |
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| CN (1) | CN206894852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333198A (en) * | 2017-07-03 | 2017-11-07 | 广州由我科技股份有限公司 | A kind of bluetooth earphone with hearing-aid function |
-
2017
- 2017-07-03 CN CN201720805952.XU patent/CN206894852U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333198A (en) * | 2017-07-03 | 2017-11-07 | 广州由我科技股份有限公司 | A kind of bluetooth earphone with hearing-aid function |
| CN107333198B (en) * | 2017-07-03 | 2024-05-24 | 广州由我科技股份有限公司 | Bluetooth headset with hearing aid function |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20210703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |