CN209358777U - A kind of low pressure alarming hearing aid - Google Patents
A kind of low pressure alarming hearing aid Download PDFInfo
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- CN209358777U CN209358777U CN201920128129.9U CN201920128129U CN209358777U CN 209358777 U CN209358777 U CN 209358777U CN 201920128129 U CN201920128129 U CN 201920128129U CN 209358777 U CN209358777 U CN 209358777U
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Abstract
The utility model relates to hearing aid technologies, disclose a kind of low pressure alarming hearing aid, including outer housing and the voltage input module and linear voltage stabilization module and alarm module of outer enclosure interior be set, voltage input module includes power supply and the voltage reduction module with power supply coupling, the output end of voltage reduction module and the input terminal of linear voltage stabilization module couple, alarm module includes the alarm unit being arranged on outer housing, the output end and alarm unit of linear voltage stabilization module couple, linear voltage stabilization module output voltage and voltage input module institute's input voltage is set to constitute linear relationship, to make voltage input module when electricity is lower, linear voltage stabilization module output voltage reaches the alert if of triggering alarm module, patient is reminded timely to be charged in advance, the case where to avoid hearing aid from powering off suddenly, promote making for hearing aid Use safety and reliability.
Description
Technical field
The utility model relates to hearing aid technologies, more specifically, it relates to a kind of low pressure alarming hearing aid.
Background technique
Hearing aid is a miniature loudspeaker, mainly by microphone, amplifier, earphone, power module and control module five
Part forms.Originally the sound that can't hear can be expanded, recycles the residual hearing for the person that listens to barrier, sound is enable to be sent to greatly
Brain auditory center, and feel sound.
Existing hearing aid, as power supply, is supplied using rechargeable lithium battary to other each electricity consumption parts
Electricity, one stationary value of voltage for mostly using power module of voltage regulation to export it, will not be because of the variation of lithium battery in a certain range
And variation is generated, improve the stability of power supply.
However, most of use scopes of lithium battery are 3.2V ~ 4.2V, and in use, supply voltage can be by
It is decrescence small, and the biggish voltage reduction of amplitude can be generated after a certain time, in the operating voltage lower than the voltage stabilizing chip used
Afterwards, hearing aid can be made to power off suddenly.And the unexpected power-off of hearing aid is and its unsafe, possible patient is at this time just in road row
It walks or is driving, can't hear extraneous sound, therefore there is very big security risk.
Utility model content
In view of the above-mentioned problems, having safety can the purpose of this utility model is to provide a kind of low pressure alarming hearing aid
By the advantages of.
The above-mentioned purpose of utility model of the utility model has the technical scheme that
A kind of low pressure alarming hearing aid, including outer housing and the voltage input module being arranged in inside the outer housing and line
Property Voltage stabilizing module and alarm module, the voltage input module includes power supply and the decompression with power supply coupling
Module；
The output end of the voltage reduction module and the input terminal of the linear voltage stabilization module couple；
The alarm module includes the alarm unit being arranged on the outer housing, the output end of the linear voltage stabilization module
It is coupled with the alarm unit.
Through the above technical solutions, linear voltage stabilization module output voltage and voltage input module institute's input voltage is made to constitute line
Sexual intercourse, to make voltage input module when electricity is lower, linear voltage stabilization module output voltage reaches triggering alarm module
Alert if reminds patient timely to be charged in advance, so that the case where avoiding hearing aid from powering off suddenly, promotes hearing aid
The safety in utilization and reliability of device.
The utility model is further arranged to: the alarm unit include backup power source VCC and with backup power source electricity
The vibration part of connection.
It supports, is avoided in power supply voltage through the above technical solutions, providing energy to vibration part by backup power source VCC
Shake follower works can not be driven when lower, promote reliability.
The utility model is further arranged to: the alarm module includes resistance R6, resistance R7, amplifier U2, triode Q1；
One end of the resistance R6 couples the alarm power supply VCC, and the other end is grounded after coupling the resistance R7, the electricity
The reverse input end of the amplifier U2, the non-inverting input terminal coupling of the amplifier U2 are coupled at the coupling of the resistance R6 and resistance R7
The output end of the linear voltage stabilization module；
The base stage of the output end of the amplifier U2 and the triode Q1 couple, the collector of the triode Q1 with it is described
Part coupling is shaken, the emitter of the triode Q1 and the vibration part couple.
Through the above technical solutions, when the output end output voltage of linear voltage stabilization module is less than the coupling of resistance R6 and resistance R7
Place's voltage is connect, the output end of amplifier U2 exports high level, triode Q1 is connected, and starting shock part realizes the prompting to patient.
The utility model is further arranged to: the linear voltage stabilization module include negative voltage linear voltage regulator and with it is described
The regulation component of negative voltage linear voltage regulator coupling.
Through the above technical solutions, the regulation component include with the negative voltage linear voltage regulator coupling resistance R4,
Resistance R5, capacitor C5, capacitor C6；
One end of the resistance R4 couples the output end of the voltage reduction module, the other end couple the resistance R5 one end and
The negative voltage linear voltage regulator, the resistance R5 couple the negative voltage linear voltage regulator far from one end of the resistance R4；
One end of the capacitor C5 couples the junction of the resistance R4 and the resistance R5, and the other end couples the negative electricity
Press linear voltage regulator；
One end with the resistance R4 far from the resistance R5 and the resistance R5 are remote respectively at the both ends of the capacitor C6
One end coupling from the resistance R4.
The utility model is further arranged to: using negative voltage linear voltage regulator, output voltage noise is smaller, and quality is more
Height, capacitor C6 can eliminate noise in circuit, and R4 and R5 can obtain different Amplitude of Hypotensive by configuring different resistance values.
Through the above technical solutions, the output end of the voltage reduction module is coupled with voltage stabilization module, the voltage stabilization
The input terminal of module and the linear voltage stabilization module couples.
The utility model is further arranged to: the voltage reduction module includes resistance R1, resistance R2, resistance R3, capacitor C1；
One end of the resistance R1 and the anode of the power supply couple, one end coupling of the other end and the resistance R2
It connects, the one end of the resistance R2 far from the resistance R1 and the cathode of the power supply and one end coupling of the resistance R3
It connects, the other end ground connection of the resistance R3；
One end of the capacitor C1 is coupled with the place of electrical connection of the resistance R1 and the resistance R2, the other end and the confession
The cathode of power supply couples.
Through the above technical solutions, decompression is realized by the voltage of resistance R2 and resistance R1 voltage division processing power supply, for
Linear voltage stabilization module normal use.
The utility model is further arranged to: the voltage stabilization module includes amplifier U1；
The non-inverting input terminal of the amplifier U1, the amplifier U1 are coupled at the electrical connection of the resistance R1 and the resistance R2
Inverting input terminal couple the output end of the amplifier U1, the input of the output end of the amplifier U1 and the linear voltage stabilization module
End coupling.
Through the above technical solutions, being made of voltage follower circuit amplifier U1 and its circuit, two lateral circuits of isolation are realized
Meanwhile guaranteeing that input voltage is consistent with output voltage.
The utility model is further arranged to: the both ends coupled in parallel of the power supply has TVS diode D1.
Through the above technical solutions, providing protection to circuit by TVS diode D1, make the voltage clamp of two interpolars in one
Safety value is effectively protected the precision components in electronic circuit from the destruction of surge pulse.
Compared with prior art, the utility model has the beneficial effects that
(1) voltage input module and its output voltage is made to constitute linear relationship by linear voltage stabilization module, to make voltage
For input module when electricity is lower, linear voltage stabilization module output voltage reaches the alert if of triggering alarm unit, can mention in advance
The patient that wakes up timely is charged, so that the case where avoiding hearing aid from powering off suddenly, promotes the safety in utilization of hearing aid
And reliability；
(2) by using negative voltage linear voltage regulator, the negative voltage generated is the ground voltage progress pressure stabilizing relative to 0V,
It can produce low-down noise and accurately output voltage in this way, be conducive to the high fidelity output of hearing aid.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model embodiment；
Fig. 2 is voltage input module circuit diagram in the utility model embodiment；
Fig. 3 is linear Voltage stabilizing module circuit diagram in the utility model embodiment；
Fig. 4 is alarm module circuitry schematic diagram in the utility model embodiment.
Appended drawing reference: 1, voltage input module；11, power supply；12, voltage reduction module；2, linear voltage stabilization module；21, it bears
Voltage linear voltage-stablizer；22, regulation component；3, alarm module；31, alarm unit；311, part is shaken；0, outer housing.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
A kind of low pressure alarming hearing aid, including outer housing 0(is referring to Fig. 1), voltage input module 1(referring to fig. 2) and it is linear
Voltage stabilizing module 2(is referring to Fig. 3) and alarm module 3(is referring to fig. 4), voltage input module 1 include power supply 11 and with power supply
The voltage reduction module 12 that power supply 11 couples, linear voltage stabilization module 2 include negative voltage linear voltage regulator 21 and linearly steady with negative voltage
The regulation component 22 that depressor 21 couples.
As shown in Fig. 2, what the voltage drop that power supply 11 provides can be worked normally down to negative voltage linear voltage regulator 21
Voltage status, make linear voltage stabilization module 2 output with the linear voltage of 1 input voltage of voltage input module, can and
When, the linear output voltage state for reflecting power supply 11, to make voltage input module 1 when electricity is lower, when
The alert if for reaching triggering alarm module 3, can remind patient timely to be charged, so that hearing aid be avoided to break suddenly in advance
The situation of electricity occurs, and promotes the safety in utilization and reliability of hearing aid.
Wherein, power supply 11 is lithium battery, and output voltage range is between 3.4V ~ 4.2V, using model
The negative voltage linear voltage regulator 21 of ADP7183, the good characteristic with low noise, high PSRR, is very suitable to hearing aid
This electronic device for noise-sensitive.
As shown in Fig. 2, voltage reduction module 12 includes resistance R1, resistance R2, resistance R3, capacitor C1, one end of resistance R1 and confession
The anode of power supply 11 couples, and one end of the other end and resistance R2 couple.Resistance R2 one end and power supply far from resistance R1
One end coupling of 11 cathode and resistance R3, the other end ground connection of resistance R3.One end of capacitor C1 and resistance R1 and resistance R2
Electrical connection at couple, the cathode of the other end and power supply 11 couples.
As shown in Fig. 2, voltage stabilization module includes amplifier U1, one end of the cathode of the separate power supply 11 of capacitor C1 with
The non-inverting input terminal of amplifier U1 couples, the output end of the inverting input terminal coupling amplifier U1 of amplifier U1, the output end of amplifier U1 with
The input terminal of linear voltage stabilization module 2 couples.So that amplifier U1 and its circuit is constituted voltage follower circuit, isolation power supply 11 with
While linear voltage stabilization module 2, guarantee that the input voltage of amplifier U1 is consistent with the output voltage of amplifier U1.And power supply 11
Both ends coupled in parallel has TVS diode D1, and TVS diode is similar to the working principle of common zener diode, if be higher than
Breakdown voltage on mark, TVS diode will be connected, when the two poles of the earth are by reversed transient state high energy impact events, with extremely short speed
The high impedance of its two interpolar is become Low ESR, while absorbing up to thousands of watts of surge power by degree.With zener diode phase
Than TVS diode has higher current capacity, makes the voltage clamp of two interpolars in a safety value, is effectively protected electricity
Precision components in sub-line road promote circuit stability from the destruction of surge pulse.
As shown in figure 3, regulation component 22 includes resistance R4, resistance R5, capacitor C5, capacitor C6, one end of resistance R4 is coupled
The output end of amplifier U1, one end of other end coupling resistance R5 and the pin 6 of negative voltage linear voltage regulator 21, resistance R5 is far from electricity
Hinder the pin 3 of one end coupling negative voltage linear voltage regulator 21 of R4, the connection of one end the coupling resistance R4 and resistance R5 of capacitor C5
Place is simultaneously coupled with the pin of negative voltage linear voltage regulator 21 4, and the other end couples 21 volume pin 3 of negative voltage linear voltage regulator, capacitor
The both ends of C6 are coupled with the pin 6 of negative voltage linear voltage regulator 21 and pin 3 respectively.The pin of negative voltage linear voltage regulator 21
1 and pin 2 couple output end, and be coupled with capacitor C24, the other end ground connection of capacitor C24.Negative voltage linear voltage regulator 21 draws
Foot 6 has been respectively coupled to capacitor C27 and capacitor C28, capacitor C27 ground connection, and capacitor C28 couples the pin of negative voltage linear voltage regulator 21
7, pin 6 and pin 8 ground connection of negative voltage linear voltage regulator 21.Capacitor C6 can eliminate noise in circuit, and R4 and R5 can pass through
It configures different resistance values and obtains different Amplitude of Hypotensive.
As shown in figure 4, alarm module 3 include resistance R6, resistance R7, amplifier U2, triode Q1, alarm power supply VCC and
Alarm unit 31, alarm unit 31 include backup power source VCC and the vibration part 311 being electrically connected with backup power source, and vibration part 311 is solid
It is scheduled in outer housing 0.
It is grounded after one end coupling alarm the power supply VCC, other end coupling resistance R7 of resistance R6, the coupling of resistance R6 and resistance R7
Meet the reverse input end of place's coupling amplifier U2, the output end of the non-inverting input terminal coupling linear voltage stabilization module 2 of amplifier U2, amplifier U2
Output end and the base stage of triode Q1 couple, the collector of triode Q1 and alarm unit 31 couple, the transmitting of triode Q1
Pole and alarm unit 31 couple.
The voltage at the coupling that the output end output voltage of linear voltage stabilization module 2 is less than resistance R6 and resistance R7, amplifier U2
Output end export high level, triode Q1 is connected, make to shake part 311 electroshock is dynamic, remind patient using sense of touch variation
Charging in time.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (9)
1. a kind of low pressure alarming hearing aid, including outer housing (0) and the setting voltage input module internal in the outer housing (0)
(1) and linear voltage stabilization module (2) and alarm module (3), which is characterized in that the voltage input module (1) includes power supply electricity
Source (11) and the voltage reduction module (12) coupled with the power supply (11)；
The output end of the voltage reduction module (12) and the input terminal of the linear voltage stabilization module (2) couple；
The alarm module (3) includes the alarm unit (31) being arranged on the outer housing (0), the linear voltage stabilization module
(2) output end and the alarm unit (31) couples.
2. low pressure alarming hearing aid according to claim 1, which is characterized in that the alarm unit (31) includes standby electricity
Source VCC and the vibration part (311) being electrically connected with the backup power source.
3. low pressure alarming hearing aid according to claim 2, which is characterized in that the alarm module (3) include resistance R6,
Resistance R7, amplifier U2, triode Q1；
One end of the resistance R6 couples the alarm power supply VCC, and the other end is grounded after coupling the resistance R7, the resistance R6
The reverse input end of the amplifier U2 is coupled at coupling with the resistance R7, described in the non-inverting input terminal coupling of the amplifier U2
The output end of linear voltage stabilization module (2)；
The base stage of the output end of the amplifier U2 and the triode Q1 couple, the collector of the triode Q1 and the vibration
Part (311) coupling, the emitter of the triode Q1 and the vibration part (311) couple.
4. low pressure alarming hearing aid according to claim 1, which is characterized in that the linear voltage stabilization module (2) includes negative
Voltage linear voltage-stablizer (21) and the regulation component (22) coupled with the negative voltage linear voltage regulator (21).
5. low pressure alarming hearing aid according to claim 4, which is characterized in that the regulation component (22) include with it is described
Resistance R4, the resistance R5, capacitor C5, capacitor C6 of negative voltage linear voltage regulator (21) coupling；
One end of the resistance R4 couples the output end of the voltage reduction module (12), the other end couple the resistance R5 one end and
The negative voltage linear voltage regulator (21), the resistance R5 couple the negative voltage linear voltage stabilization far from one end of the resistance R4
Device (21)；
One end of the capacitor C5 couples the junction of the resistance R4 and the resistance R5, and the other end couples the negative electricity crimping
Property voltage-stablizer (21)；
The both ends of the capacitor C6 respectively one end with the resistance R4 far from the resistance R5 and the resistance R5 far from institute
State one end coupling of resistance R4.
6. low pressure alarming hearing aid according to claim 1, which is characterized in that the output end coupling of the voltage reduction module (12)
It is connected to voltage stabilization module, the input terminal coupling of the voltage stabilization module and the linear voltage stabilization module (2).
7. low pressure alarming hearing aid according to claim 6, which is characterized in that the voltage reduction module (12) includes resistance
R1, resistance R2, resistance R3, capacitor C1；
One end of the resistance R1 and the anode of the power supply (11) couple, one end coupling of the other end and the resistance R2
It connects, the one end of the resistance R2 far from the resistance R1 and the cathode of the power supply (11) and one end of the resistance R3
Coupling, the other end ground connection of the resistance R3；
One end of the capacitor C1 is coupled with the place of electrical connection of the resistance R1 and the resistance R2, the other end and power supply electricity
The cathode in source (11) couples.
8. low pressure alarming hearing aid according to claim 7, which is characterized in that the voltage stabilization module includes amplifier
U1；
The non-inverting input terminal of the amplifier U1 is coupled at the electrical connection of the resistance R1 and the resistance R2, the amplifier U1's is anti-
Phase input terminal couples the output end of the amplifier U1, the input of the output end of the amplifier U1 and the linear voltage stabilization module (2)
End coupling.
9. low pressure alarming hearing aid according to claim 8, which is characterized in that the both ends of the power supply (11) are in parallel
It is coupled with TVS diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920128129.9U CN209358777U (en) | 2019-01-24 | 2019-01-24 | A kind of low pressure alarming hearing aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920128129.9U CN209358777U (en) | 2019-01-24 | 2019-01-24 | A kind of low pressure alarming hearing aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209358777U true CN209358777U (en) | 2019-09-06 |
Family
ID=67803346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920128129.9U Active CN209358777U (en) | 2019-01-24 | 2019-01-24 | A kind of low pressure alarming hearing aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209358777U (en) |
-
2019
- 2019-01-24 CN CN201920128129.9U patent/CN209358777U/en active Active
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