CN103686519B - Selectivity filters electronic earplug of making an uproar - Google Patents
Selectivity filters electronic earplug of making an uproar Download PDFInfo
- Publication number
- CN103686519B CN103686519B CN201310745333.2A CN201310745333A CN103686519B CN 103686519 B CN103686519 B CN 103686519B CN 201310745333 A CN201310745333 A CN 201310745333A CN 103686519 B CN103686519 B CN 103686519B
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- China
- Prior art keywords
- audio frequency
- frequency amplifier
- feet
- resistance
- earplug
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs
- A61F11/145—Protective devices for the ears external, e.g. earcaps or earmuffs electric, e.g. for active noise reduction
Abstract
nullThe present invention relates to selectivity and filter electronic earplug of making an uproar，Can effectively solve both to prevent noise to health and the damage of audition，The problem that can guarantee that again normal good hearing，Its structure is，Including housing、Audition cylinder、Earplug and control circuit，There are two audition bore side by side housing front portion，In housing, there is battery compartment at rear portion，The housing on battery compartment top is built with circuit board，Circuit power end on circuit board is connected with the battery in battery compartment，Audition cylinder in the input of circuit and two audition bore is connected，The outfan of circuit and left earplug、Right earplug is connected，The described circuit on circuit board includes the first audio frequency amplifier、The amplifying circuit that second audio frequency amplifier is constituted，The Differential Input amplifying circuit constituted with the 3rd audio frequency amplifier，Present configuration novelty is unique，Easily manufacture，Easy to use，Effective，Can effectively protect noise to the infringement of people's audition and healthy，It is particularly well-suited under high noisy various environment occasion，Effectively prevent the generation that noise is deaf.
Description
Technical field
The present invention relates to electrical equipment, particularly a kind of selectivity filters electronic earplug of making an uproar.
Background technology
In actual life, noise exists everywhere, particularly in plant produced, construction site, in military training and ball firing, often have various noise, such as machine roar, various firearms Missile Firing sound, various explosive explosive sounds, high-decibel audio amplifier sound etc., these discordant noise on human healthy, audition has direct adverse effect, how to prevent noise, people take all technological means, cotton balls or other tamper is filled in using ear, but owing to the soundproof effect of these materials is limited, and not there is the selectivity to sound, affect normal audition, particularly when military training, can not effectively hear the signal order that commandant sends, affect training effect, therefore, while how preventing noise, can guarantee that again normal audition, open report so far there are no the equipment of this respect.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the purpose of the present invention is just to provide a kind of selectivity and filters electronic earplug of making an uproar, and can effectively solve both to prevent noise to health and the damage of audition, the problem that can guarantee that again normal good hearing.
nullThe technical scheme that the present invention solves is，Including housing、Audition cylinder、Earplug and control circuit，There are two audition bore side by side housing front portion，In housing, there is battery compartment at rear portion，The housing on battery compartment top is built with circuit board，Circuit power end on circuit board is connected with the battery in battery compartment，Audition cylinder in the input of circuit and two audition bore is connected，The outfan of circuit and left earplug、Right earplug is connected，The described circuit on circuit board includes the first audio frequency amplifier、The amplifying circuit that second audio frequency amplifier is constituted，The Differential Input amplifying circuit constituted with the 3rd audio frequency amplifier，3 feet of the first audio frequency amplifier U1A (+) the resistance R2 that is concatenated、Electric capacity C1 connecting resistance R1 one end and the first audition cylinder MK1，First audition cylinder MK1 ground connection，Another termination capacitor C8 of resistance R1、Power supply VCC and one end of resistance R5，Electric capacity C8 ground connection，2 foot (-) connecting resistance R4 one end of first audio frequency amplifier U1A，The electric capacity C3 ground connection that the resistance R4 other end is concatenated，2 feet of the first audio frequency amplifier U1A and 6 feet of the second audio frequency amplifier U1B、2 feet of the 3rd audio frequency amplifier U2A are connected，It is serially connected with resistance R3 between 2 feet and 1 foot of the first audio frequency amplifier U1A，8 feet of the first audio frequency amplifier U1A meet power supply VCC，4 foot ground connection，The electric capacity C2 that 1 foot is concatenated、Resistance R11 connect the 3rd audio frequency amplifier U2A 3 feet (+)；5 feet of the second audio frequency amplifier U1B (+) the resistance R6, the other end of electric capacity C4 connecting resistance R5 and the second audition cylinder MK2 that are concatenated, second audition cylinder MK2 ground connection, resistance R8 that 6 feet of the second audio frequency amplifier U1B are concatenated, electric capacity C5 ground connection, it is serially connected with resistance R7 between 6 feet of the second audio frequency amplifier U1B and 7 feet, the 4 foot ground connection of the second audio frequency amplifier U1B, 8 feet meet power supply VCC, and electric capacity C6, resistance R12 that 7 feet are concatenated connect the first audio frequency amplifier U1A, 2 feet of the 3rd audio frequency amplifier U2A；2 feet of the 3rd audio frequency amplifier U2A are through resistance R13 ground connection, the 4 foot ground connection of the 3rd audio frequency amplifier U2A, 8 feet meet power supply VCC, resistance R14 it is serially connected with between 3 feet and 1 foot, 1 foot meridian capacitor C7 meets the 6-2 in left earplug J1(Fig. 1), 6-1 in right earplug J2(Fig. 1), 2 feet of the first audio frequency amplifier U1A, 6 feet of the second audio frequency amplifier U1B, 2 feet of the 3rd audio frequency amplifier U2A meet power supply VCC through resistance R9, and through resistance R10 ground connection.
Present configuration novelty is unique, easily manufactures, easy to use, effective, can effectively protect noise to the infringement of people's audition and healthy, be particularly well-suited under high noisy various environment occasion, effectively prevent the generation that noise is deaf.
Accompanying drawing explanation
Fig. 1 is the structural profile schematic front view of the present invention.
Fig. 2 is the earplug cross-sectional view of the present invention.
Fig. 3 is the circuit principle structure figure of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is elaborated.
nullShown in Fig. 1-3，The present invention includes housing、Audition cylinder、Earplug and control circuit，There are two audition bore 4 side by side housing 1 front portion、5，In housing 1, there is battery compartment 7 at rear portion，The housing on battery compartment 7 top is built with circuit board 3，Circuit power end on circuit board is connected with the battery in battery compartment，Audition cylinder (i.e. MK1 in the input of circuit and two audition bore、MK2) it is connected，The outfan of circuit and left earplug 6-2、Right earplug 6-1 is connected，The described circuit on circuit board includes the first audio frequency amplifier、The amplifying circuit that second audio frequency amplifier is constituted，The Differential Input amplifying circuit constituted with the 3rd audio frequency amplifier，3 feet of the first audio frequency amplifier U1A (+) the resistance R2 that is concatenated、Electric capacity C1 connecting resistance R1 one end and the first audition cylinder MK1，First audition cylinder MK1 ground connection，Another termination capacitor C8 of resistance R1、Power supply VCC and one end of resistance R5，Electric capacity C8 ground connection，2 foot (-) connecting resistance R4 one end of first audio frequency amplifier U1A，The electric capacity C3 ground connection that the resistance R4 other end is concatenated，2 feet of the first audio frequency amplifier U1A and 6 feet of the second audio frequency amplifier U1B、2 feet of the 3rd audio frequency amplifier U2A are connected，It is serially connected with resistance R3 between 2 feet and 1 foot of the first audio frequency amplifier U1A，8 feet of the first audio frequency amplifier U1A meet power supply VCC，4 foot ground connection，The electric capacity C2 that 1 foot is concatenated、Resistance R11 connect the 3rd audio frequency amplifier U2A 3 feet (+)；5 feet of the second audio frequency amplifier U1B (+) the resistance R6, the other end of electric capacity C4 connecting resistance R5 and the second audition cylinder MK2 that are concatenated, second audition cylinder MK2 ground connection, resistance R8 that 6 feet of the second audio frequency amplifier U1B are concatenated, electric capacity C5 ground connection, it is serially connected with resistance R7 between 6 feet of the second audio frequency amplifier U1B and 7 feet, the 4 foot ground connection of the second audio frequency amplifier U1B, 8 feet meet power supply VCC, and electric capacity C6, resistance R12 that 7 feet are concatenated connect the first audio frequency amplifier U1A, 2 feet of the 3rd audio frequency amplifier U2A；2 feet of the 3rd audio frequency amplifier U2A are through resistance R13 ground connection, the 4 foot ground connection of the 3rd audio frequency amplifier U2A, 8 feet meet power supply VCC, resistance R14 it is serially connected with between 3 feet and 1 foot, 1 foot meridian capacitor C7 meets the 6-2 in left earplug J1(Fig. 1), 6-1 in right earplug J2(Fig. 1), 2 feet of the first audio frequency amplifier U1A, 6 feet of the second audio frequency amplifier U1B, 2 feet of the 3rd audio frequency amplifier U2A meet power supply VCC through resistance R9, and through resistance R10 ground connection.
In order to ensure using effect and easy to use, described housing arranged on left and right sides has earphone through wires hole 10；Described earplug is prior art, the earplug set 8 that the front end outer cover of earplug is made equipped with polypropylene or sponge, and there is sound hole 9 front end of earplug set；Described shell be polypropylene height biomaterial make square or circular, there is bonnet 2 at rear portion, and there is fixing band 11 on both sides；Described battery is No. 5 batteries or the button cell of identical voltage；Described the first audio frequency amplifier, the second audio frequency amplifier, the 3rd audio frequency amplifier are the high cmrr audio frequency amplifier OPA2365 with null offset effect.
Electric capacity C1-C7It is decoupling capacitor, when preventing cell voltage from reducing, produces self-excitation；Resistance R1-13It is microphone biasing resistance, general selection 500 Ω～2.0 K Ω；Earphone uses certified products 8 Ω earphone, and with weaving noise control polypropylene earplug set before earphone, prevents high-decibel noise to be directly entered in ear.This earplug running current 8～10mA, after installing, just can use after debugging.
The working condition of the present invention is, during use, two earplugs are respectively placed in a left side, in auris dextra, before shell being hung over breast by fixing band, audition cylinder in audition bore is towards front, when audio signal is converted to the signal of telecommunication through acoustical-electrical transducer (Mike), by electric capacity every straight-through friendship coupling, audio signal is exported to amplifier, after signal is amplified by the first two amplifier, signal inputs the both positive and negative polarity (difference amplifier) to the 3rd main amplifier, utilize under same environment, pick up the noise signal under same environment, environment noise is eliminated by Differential Input amplifying circuit, when keeping silence, it is output as zero, during speech, environment noise is inputted by two microphones (Mike), because frequency and amplitude are cancelled out each other mutually on the contrary, then environment noise eliminates.When the sound intensity of sound is less than 80 decibels, the circuit sound channel of earplug is open；When the sound intensity of sound is higher than 80 decibels, the circuit sound channel moment of earplug closes, and after high-decibel noise disappears 0.2 second, amplifying circuit automatically restores to magnifying state.
Be can be seen that by above-mentioned; the present invention can optionally filter the sound being not desired to hear; the most various noises (include machine roar, various firearms Missile Firing sound, various explosive explosive sound, high-decibel audio amplifier sound etc.); can be effectively used for that there is strong noise military training subject, firing practice subject, strong noise engineering construction building site, the protection of strong noise workman working space binaural listening; can also be used for protection of navy submarine personnel's audition etc.; in case the generation of noise deaf, there is good economic and social benefit.
Claims (5)
- null1. a selectivity filters electronic earplug of making an uproar，Including housing、Audition cylinder、Earplug and control circuit，It is characterized in that，There are two audition bore (4 side by side housing (1) front portion、5)，There is battery compartment (7) at housing (1) interior rear portion，The housing on battery compartment (7) top is built with circuit board (3)，Circuit power end on circuit board is connected with the battery in battery compartment，Audition cylinder in the input of circuit and two audition bore is connected，The outfan of circuit and left earplug (6-2)、Right earplug (6-1) is connected，The described circuit on circuit board includes the first audio frequency amplifier、The amplifying circuit that second audio frequency amplifier is constituted，The Differential Input amplifying circuit constituted with the 3rd audio frequency amplifier，The resistance R2 that 3 feet of the first audio frequency amplifier U1A are concatenated、Electric capacity C1 connecting resistance R1 one end and the first audition cylinder MK1，First audition cylinder MK1 ground connection，Another termination capacitor C8 of resistance R1、Power supply VCC and one end of resistance R5，Electric capacity C8 ground connection，2 foot connecting resistance R4 one end of first audio frequency amplifier U1A，The electric capacity C3 ground connection that the resistance R4 other end is concatenated，2 feet of the first audio frequency amplifier U1A and 6 feet of the second audio frequency amplifier U1B、2 feet of the 3rd audio frequency amplifier U2A are connected，It is serially connected with resistance R3 between 2 feet and 1 foot of the first audio frequency amplifier U1A，8 feet of the first audio frequency amplifier U1A meet power supply VCC，4 foot ground connection，The electric capacity C2 that 1 foot is concatenated、Resistance R11 connects 3 feet of the 3rd audio frequency amplifier U2A；Resistance R6, the other end of electric capacity C4 connecting resistance R5 and the second audition cylinder MK2 that 5 feet of the second audio frequency amplifier U1B are concatenated, second audition cylinder MK2 ground connection, resistance R8 that 6 feet of the second audio frequency amplifier U1B are concatenated, electric capacity C5 ground connection, it is serially connected with resistance R7 between 6 feet of the second audio frequency amplifier U1B and 7 feet, the 4 foot ground connection of the second audio frequency amplifier U1B, 8 feet meet power supply VCC, and electric capacity C6, resistance R12 that 7 feet are concatenated connect the first audio frequency amplifier U1A, 2 feet of the 3rd audio frequency amplifier U2A；2 feet of the 3rd audio frequency amplifier U2A are through resistance R13 ground connection, the 4 foot ground connection of the 3rd audio frequency amplifier U2A, 8 feet meet power supply VCC, resistance R14 it is serially connected with between 3 feet and 1 foot, 1 foot meridian capacitor C7 meets left earplug J1, right earplug J2,2 feet of the first audio frequency amplifier U1A, 6 feet of the second audio frequency amplifier U1B, 2 feet of the 3rd audio frequency amplifier U2A meet power supply VCC through resistance R9, and through resistance R10 ground connection.
- Selectivity the most according to claim 1 filters electronic earplug of making an uproar, it is characterised in that described housing arranged on left and right sides has earphone through wires hole (10).
- Selectivity the most according to claim 1 filters electronic earplug of making an uproar, it is characterised in that the earplug set (8) that the front end outer cover of described earplug is made equipped with polypropylene or sponge, there is sound hole (9) front end of earplug set.
- Selectivity the most according to claim 1 filter is made an uproar electronic earplug, it is characterised in that described housing be polypropylene height biomaterial make square or circular, there is bonnet (2) at rear portion, and there is fixing band (11) on both sides.
- Selectivity the most according to claim 1 filter is made an uproar electronic earplug, it is characterised in that described the first audio frequency amplifier, the second audio frequency amplifier, the 3rd audio frequency amplifier are the high cmrr audio frequency amplifier OPA2365 with null offset effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745333.2A CN103686519B (en) | 2013-12-31 | 2013-12-31 | Selectivity filters electronic earplug of making an uproar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745333.2A CN103686519B (en) | 2013-12-31 | 2013-12-31 | Selectivity filters electronic earplug of making an uproar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103686519A CN103686519A (en) | 2014-03-26 |
| CN103686519B true CN103686519B (en) | 2016-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310745333.2A Active CN103686519B (en) | 2013-12-31 | 2013-12-31 | Selectivity filters electronic earplug of making an uproar |
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| Country | Link |
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| CN (1) | CN103686519B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4837832A (en) * | 1987-10-20 | 1989-06-06 | Sol Fanshel | Electronic hearing aid with gain control means for eliminating low frequency noise |
| CN201481447U (en) * | 2009-08-14 | 2010-05-26 | 广州医学院第二附属医院 | Electronic stethoscope actively reducing noise |
| CN202310066U (en) * | 2011-10-31 | 2012-07-04 | 东莞市翔音电子有限公司 | Low-frequency denoising control device for denoising earphone |
-
2013
- 2013-12-31 CN CN201310745333.2A patent/CN103686519B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4837832A (en) * | 1987-10-20 | 1989-06-06 | Sol Fanshel | Electronic hearing aid with gain control means for eliminating low frequency noise |
| CN201481447U (en) * | 2009-08-14 | 2010-05-26 | 广州医学院第二附属医院 | Electronic stethoscope actively reducing noise |
| CN202310066U (en) * | 2011-10-31 | 2012-07-04 | 东莞市翔音电子有限公司 | Low-frequency denoising control device for denoising earphone |
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| Publication number | Publication date |
|---|---|
| CN103686519A (en) | 2014-03-26 |
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Effective date of registration: 20190401 Address after: 450052 Department of Otolaryngology, 988 Hospital of Zhengzhou PLA, Henan Province (No. 602, Jianjian Road, Zhengzhou City) Patentee after: Ninety-eighth Hospital of the Joint Logistics Support Force of the Chinese People's Liberation Army Address before: 450045 Department of Otolaryngology, No. 153 Central Hospital, No. 602 Zhengshang Road, Zhongyuan District, Zhengzhou City, Henan Province (West District) Patentee before: Li Yi |
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| TR01 | Transfer of patent right |