CN105491497A - Hearing-aid instrument for hearing impairment - Google Patents
Hearing-aid instrument for hearing impairment Download PDFInfo
- Publication number
- CN105491497A CN105491497A CN201510998176.5A CN201510998176A CN105491497A CN 105491497 A CN105491497 A CN 105491497A CN 201510998176 A CN201510998176 A CN 201510998176A CN 105491497 A CN105491497 A CN 105491497A
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- Prior art keywords
- resistor
- coupled
- lead
- input
- out terminal
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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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/53—Hearing aid for unilateral hearing impairment using Contralateral Routing Of Signals [CROS]
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention provides a hearing-aid instrument for hearing impairment. The hearing impairment electronic auxiliary device comprises a microphone, a first capacitor, and a second capacitor. The anode terminal of the microphone is connected to a first resistor, and the cathode terminal is connected to the cathode of the power supply; a first resistor is connected to an earphone jack which is connected to the anode of the power supply; the first capacitor is connected to the common terminal of the microphone and the first resistor, and the second terminal of the first capacitor is connected to a second resistor; the second resistor is connected to the first terminal of an adjustable resistor; the second terminal of the adjustable resistor is connected to the input terminal of the COMS amplifier; the output terminal of the COMS amplifier is connected to the sliding terminal of the adjustable resistor through a third resistor; the first terminal of the second capacitor is connected to the output terminal of the COMS amplifier, and the second terminal of the second capacitor is connected to the base electrode of the PNP transistor; the collection electrode of the PNP transistor is connected to the anode of the power supply; the emission electrode of the PNP transistor is connected to the cathode of the power supply and is connected to the base electrode through a fourth resistor.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of ear barrier hearing instrument.
Background technology
Existing ear barrier hearing instrument price is high, and volume is large, and power consumption, and the elderly needs the used time to open switch ability hearing aid, very inconvenient.
The volume of ear barrier hearing instrument is large, mainly determined by power supply, the electric energy conversion efficiency of power supply is low, must be made up by battery capacity, how to improve the electric energy conversion efficiency of power supply, reduce battery volume, and then reduce the overall volume of ear barrier hearing instrument, what strengthen user wears experience, is current problem demanding prompt solution.
Summary of the invention
The present invention proposes a kind of ear barrier hearing instrument, and solve existing ear barrier hearing instrument price high, volume is large, and the problem of power consumption.
Technical scheme of the present invention is achieved in that
A kind of ear barrier hearing instrument, comprising: microphone, its positive terminal is connected to the first end of the first resistor, and its negative pole end is connected to the negative pole of power supply; Second end of described first resistor is connected to the first end of receiver J-Horner, and the second end of earphone jack is connected to the positive pole of described power supply; First capacitor, its first end is connected to the common port of described microphone and the first resistor, its the second end is connected to the first end of the second resistor, second end of the second resistor is connected to the first end of adjustable resistor, second end of adjustable resistor is connected to the input of COMS amplifier, the output of COMS amplifier is connected to the sliding end of described adjustable resistor by the 3rd resistor, wherein, COMS amplifier comprises three not gates be connected in series; Second capacitor, its first end is connected to the output of described COMS amplifier, its the second end is connected to the base stage of PNP transistor, the collector electrode of PNP transistor is connected to the positive pole of described power supply, and the emitter of PNP transistor is connected to the negative pole of described power supply and is connected to its base stage by the 4th resistor;
Described power supply comprises:
Input port, receives input voltage;
Output port, provides output voltage;
Input inductor and the first power switch, be coupled in series between input port and reference ground;
Second power switch, is coupled between the coupled in series node of the first power switch and input inductor and output port;
Output capacitor, is coupled between output port and reference ground;
Feedback component, is coupled to output port and receives output voltage, and produce the feedback voltage of reflection output voltage;
Error amplifier, has in-phase input end, inverting input and lead-out terminal, and its inverting input receives reference voltage, and its in-phase input end is coupled to feedback component and receives feedback voltage, and its lead-out terminal produces error amplification signal;
Clamper, is coupled between the lead-out terminal of error amplifier and reference ground;
Frequency comparator, has in-phase input end, inverting input and lead-out terminal, and the lead-out terminal that its inverting input is coupled to error amplifier receives error amplification signal, and its lead-out terminal provides clock signal;
Sawtooth generator, is coupled to the lead-out terminal receive clock signal of frequency comparator, and provides sawtooth signal to the in-phase input end of frequency comparator based on clock signal;
Control and drive circuit, be coupled to the lead-out terminal receive clock signal of frequency comparator, and based on clock signal, produce double switch drive singal, to control the break-make of the first power switch and the second power switch.
The invention has the beneficial effects as follows:
Ear barrier hearing instrument simplicity of design is reliable, easy to use, reduces machine volume.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of a kind of ear barrier of the present invention hearing instrument;
Fig. 2 is the circuit diagram of power supply of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of ear barrier hearing instrument of the present invention, comprising: microphone 10, its positive terminal is connected to the first end of the first resistor 21, and its negative pole end is connected to the negative pole of power supply 60; Second end of the first resistor 21 is connected to the first end of receiver J-Horner 50, and the second end of earphone jack 50 is connected to the positive pole of power supply 60; First capacitor 31, its first end is connected to the common port of microphone 10 and the first resistor 21, its second end is connected to the first end of the second resistor 22, second end of the second resistor 22 is connected to the first end of adjustable resistor 25, second end of adjustable resistor 25 is connected to the input of COMS amplifier, the output of COMS amplifier is connected to the sliding end of adjustable resistor 25 by the 3rd resistor 23, wherein, COMS amplifier comprises three not gates be connected in series 71, not gate 72 and not gate 73; Second capacitor 32, its first end is connected to the output of COMS amplifier, its the second end is connected to the base stage of PNP transistor 40, the collector electrode of PNP transistor 40 is connected to the positive pole of power supply 60, and the emitter of PNP transistor 40 is connected to the negative pole of power supply 60 and is connected to its base stage by the 4th resistor 24.
Fig. 2 is the electrical block diagram of power supply 100 according to an embodiment of the invention.As shown in Figure 2, power supply 100 of the present invention comprises: input port 101, receives input voltage vin; Output port 102, provides output voltage Vo; Input inductor 103 and the first power switch 104, be coupled in series between input port 101 and reference ground; Second power switch 105, between the coupled in series node being coupled in the first power switch 104 and input inductor 103 and output port 102; Output capacitor 106, is coupled between output port 102 and reference ground; Feedback component 107, is coupled to output port 102 and receives output voltage Vo, and produces the feedback voltage Vfb of reflection output voltage Vo; Error amplifier 108, has in-phase input end, inverting input and lead-out terminal, and its inverting input receives reference voltage Vref, and its in-phase input end is coupled to feedback component 107 and receives feedback voltage Vfb, and its lead-out terminal produces error amplification signal Vc; Clamper 109, is coupled between the lead-out terminal of error amplifier 108 and reference ground; Frequency comparator 110, has in-phase input end, inverting input and lead-out terminal, and the lead-out terminal that its inverting input is coupled to error amplifier 108 receives error amplification signal Vc, and its lead-out terminal provides clock signal clk; Sawtooth generator 111, is coupled to the lead-out terminal receive clock signal CLK of frequency comparator 110, and provides sawtooth signal Vsw to the in-phase input end of frequency comparator 110 based on clock signal clk; Control and drive circuit 112, be coupled to the lead-out terminal receive clock signal CLK of frequency comparator 110, and based on clock signal clk, produce double switch drive singal, to control the break-make of the first power switch 104 and the second power switch 105.
Transistor is connected into emitter follower form, amplifies the AC signal that cmos amplifier is exported by the second capacitor-coupled, and promote common headphones, wherein, the 4th resistor is biasing resistor.Complete machine adopts earphone jack to double as mains switch, and when headset plug inserts, power supply is connected, and when plug is extracted, power supply cuts off automatically, simplifies circuit structure, reduces machine volume.
Ear barrier hearing instrument simplicity of design of the present invention is reliable, easy to use, reduces machine volume.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. an ear barrier hearing instrument, is characterized in that, comprising:
Microphone, its positive terminal is connected to the first end of the first resistor, and its negative pole end is connected to the negative pole of power supply; Second end of described first resistor is connected to the first end of receiver J-Horner, and the second end of earphone jack is connected to the positive pole of described power supply;
First capacitor, its first end is connected to the common port of described microphone and the first resistor, its the second end is connected to the first end of the second resistor, second end of the second resistor is connected to the first end of adjustable resistor, second end of adjustable resistor is connected to the input of COMS amplifier, the output of COMS amplifier is connected to the sliding end of described adjustable resistor by the 3rd resistor, wherein, COMS amplifier comprises three not gates be connected in series;
Second capacitor, its first end is connected to the output of described COMS amplifier, its the second end is connected to the base stage of PNP transistor, the collector electrode of PNP transistor is connected to the positive pole of described power supply, and the emitter of PNP transistor is connected to the negative pole of described power supply and is connected to its base stage by the 4th resistor
Described power supply comprises:
Input port, receives input voltage;
Output port, provides output voltage;
Input inductor and the first power switch, be coupled in series between input port and reference ground;
Second power switch, is coupled between the coupled in series node of the first power switch and input inductor and output port;
Output capacitor, is coupled between output port and reference ground;
Feedback component, is coupled to output port and receives output voltage, and produce the feedback voltage of reflection output voltage;
Error amplifier, has in-phase input end, inverting input and lead-out terminal, and its inverting input receives reference voltage, and its in-phase input end is coupled to feedback component and receives feedback voltage, and its lead-out terminal produces error amplification signal;
Clamper, is coupled between the lead-out terminal of error amplifier and reference ground;
Frequency comparator, has in-phase input end, inverting input and lead-out terminal, and the lead-out terminal that its inverting input is coupled to error amplifier receives error amplification signal, and its lead-out terminal provides clock signal;
Sawtooth generator, is coupled to the lead-out terminal receive clock signal of frequency comparator, and provides sawtooth signal to the in-phase input end of frequency comparator based on clock signal;
Control and drive circuit, be coupled to the lead-out terminal receive clock signal of frequency comparator, and based on clock signal, produce double switch drive singal, to control the break-make of the first power switch and the second power switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998176.5A CN105491497A (en) | 2015-12-25 | 2015-12-25 | Hearing-aid instrument for hearing impairment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998176.5A CN105491497A (en) | 2015-12-25 | 2015-12-25 | Hearing-aid instrument for hearing impairment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105491497A true CN105491497A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510998176.5A Pending CN105491497A (en) | 2015-12-25 | 2015-12-25 | Hearing-aid instrument for hearing impairment |
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| Country | Link |
|---|---|
| CN (1) | CN105491497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249793A (en) * | 2016-07-20 | 2016-12-21 | 瑞声声学科技(深圳)有限公司 | Power regulator circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781240A (en) * | 2004-02-26 | 2006-05-31 | 半导体元件工业有限责任公司 | Power supply controller and structure |
| CN102916595A (en) * | 2012-10-25 | 2013-02-06 | 深圳市明微电子股份有限公司 | Switching power supply and multi-threshold switching circuit thereof |
| CN203340285U (en) * | 2013-06-21 | 2013-12-11 | 青岛滨海学院 | Electronic hearing aid |
| CN203352442U (en) * | 2013-07-02 | 2013-12-18 | 西南交通大学 | Fixed-frequency constant on-off time controlling apparatus of dynamic adjusting switch converter |
-
2015
- 2015-12-25 CN CN201510998176.5A patent/CN105491497A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781240A (en) * | 2004-02-26 | 2006-05-31 | 半导体元件工业有限责任公司 | Power supply controller and structure |
| CN102916595A (en) * | 2012-10-25 | 2013-02-06 | 深圳市明微电子股份有限公司 | Switching power supply and multi-threshold switching circuit thereof |
| CN203340285U (en) * | 2013-06-21 | 2013-12-11 | 青岛滨海学院 | Electronic hearing aid |
| CN203352442U (en) * | 2013-07-02 | 2013-12-18 | 西南交通大学 | Fixed-frequency constant on-off time controlling apparatus of dynamic adjusting switch converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249793A (en) * | 2016-07-20 | 2016-12-21 | 瑞声声学科技(深圳)有限公司 | Power regulator circuit |
| CN106249793B (en) * | 2016-07-20 | 2018-02-23 | 瑞声声学科技(深圳)有限公司 | Power regulator circuit |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160413 |
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| WD01 | Invention patent application deemed withdrawn after publication |