CN201657254U - Impulsive noise prevention earphone - Google Patents
Impulsive noise prevention earphone Download PDFInfo
- Publication number
- CN201657254U CN201657254U CN2010201305470U CN201020130547U CN201657254U CN 201657254 U CN201657254 U CN 201657254U CN 2010201305470 U CN2010201305470 U CN 2010201305470U CN 201020130547 U CN201020130547 U CN 201020130547U CN 201657254 U CN201657254 U CN 201657254U
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- Prior art keywords
- amplifying circuit
- earphone
- earmuff
- electrically connected
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000002265 prevention Effects 0.000 title abstract 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Abstract
The utility model relates to an earphone, especially to an impulsive noise prevention earphone, which includes a microphone, noise prevention earmuffs and an earmuff holder; noise prevention earmuffs are connected on left and right of the earmuff holder; the earmuff holder is connected with an earphone wireless communication unit; a signal change-over switch and the microphone of the earphone wireless communication unit are fixed on the noise prevention earmuff; the noise prevention earmuff and the microphone are in shaft connection; the earphone wireless communication unit includes the microphone, a modulation amplifying circuit, a radio frequency amplifying circuit, a signal change-over switch, a demodulation circuit, an audio frequency power amplifying circuit, the earphone and a power management circuit; the microphone output signal end is electrically connected with the modulation amplifying circuit; the modulation amplifying circuit is electrically connected with the radio frequency amplifying circuit; the radio frequency amplifying circuit is electrically connected with the signal change-over switch; the signal change-over switch is electrically connected with an antenna circuit; the other end of the signal change-over switch is electrically connected with an input end of the demodulation circuit; the demodulation circuit demodulates and is electrically connected with the audio frequency power amplifying circuit; and the audio frequency power amplifying circuit is electrically connected with a loudspeaker. The earphone prevents the impulsive noise and guarantees communication between wearing people and headquarter.
Description
Technical field
The utility model relates to a kind of earphone, and is particularly a kind of at the impulse noise protection earphone.
Background technology
Aspect the research of impulse noise protection earphone, active earmuff is as an important application direction of Active noise control using technology, can play good noise reduction in theory, but because there is also insoluble technical problem at present in the Active noise control using technology, domesticly also only rest on theoretical research stage about the active earmuff research overwhelming majority at present, the research of concrete model machine in kind is Xianyu's report also.Eliminating or reducing in the research of impulsive noise at present, apparent in view from controlling the elimination of noise source aspect or reducing the impulsive noise effect, but the engineering that causes thus protection expense is relatively large; Reduce impulsive noise from individual protection aspect example noise proot earplug, earphone, not only economy but also feasible by contrast, but general noise proot earplug, earphone are only considered to reduce noise and are imported people's duct into and prevent sound leakage, can't solve the operating personnel because wear the problem that noise proot earplug, earphone exchange difficulty each other.
Summary of the invention
The utility model purpose provide a kind of cost low, be convenient for carrying the impulse noise protection earphone, simultaneously when earphone impulsive noise is protected, guarantee to wear between the personnel and wear communicating with each other, exchanging between personnel and the commander department.
The technical scheme that its technical problem that solves the utility model adopts is: the impulse noise protection earphone comprises microphone, protection against noise earmuff, earmuff support, earmuff support one the first from left right side is connected with the protection against noise earmuff, it is characterized in that: the earmuff support is connected with an earphone radio communication apparatus, and the signal shift switch of earphone radio communication apparatus and microphone are fixed on the protection against noise earmuff.
Described protection against noise earmuff is connected by axle with microphone.
Described earphone radio communication apparatus comprises microphone, modulation amplifying circuit, radio frequency amplifying circuit, signal shift switch, demodulator circuit, audio power amplifying circuit, earphone, electric power management circuit, the microphone output signal end is electrically connected with modulation amplifying circuit, modulation amplifying circuit is electrically connected with radio frequency amplifying circuit, radio frequency amplifying circuit is electrically connected with signal shift switch, and signal shift switch is electrically connected with antenna circuit; The signal shift switch other end is electrically connected with the input of demodulator circuit, and the demodulator circuit demodulation is electrically connected with audio power amplifying circuit, and audio power amplifying circuit is electrically connected loud speaker.
Operation principle of the present utility model and beneficial effect are: the command set staff sends instruction by the hand-held communication machine to each operator who wears the noise protection earphone, and each wears noise protection earphone operator can receive instruction simultaneously.Noise protection earphone communication modes is a half-duplex frequency modulation voice call standard, and the operator is if think and command set conversation, realizes answering switching with call function by the voice switch that connects on the noise protection earphone.Wear the operator of noise protection earphone if think and the command set conversation, press voice switch, earmuff just is in talking state, talk-through, and trip switch, earmuff just recovers accepting state, can avoid on-site noise to conduct to control desk like this.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 the utility model example structure schematic diagram;
Fig. 2 is an earphone radio communication apparatus example structure top graph;
Fig. 3 is a hand-held communication machine outline drawing;
Fig. 4 is the utility model fundamental diagram;
Fig. 5 the utility model frequency modulation wireless communication line block diagram.
Among the figure: 1, microphone; 2, protection against noise earmuff; 3, earmuff support; 4, earphone radio communication apparatus; 5, antenna; 6, antenna jack; 7, signal shift switch; 8, power supply indicator; 9, charging socket; 10, mains switch; 11, loud speaker phonate hole; 12, microphone sound hole; 13, voice switch; 14, hand-held communication machine; 15, protection against noise earphone; 16, electric power management circuit; 17, loud speaker; 18, audio power amplifying circuit; 19, demodulator circuit; 20, modulation amplifying circuit; 21, radio frequency amplifying circuit.
Embodiment
As shown in Figure 1, the noise protection earphone comprises microphone 1, protection against noise earmuff 2, earmuff support 3, this earphone is identical with conventional Headphone structure, be protection against noise earmuff 2 of the right connection of earmuff support 3 one the first from left, be connected with microphone 1 on one of them protection against noise earmuff 2, and microphone 1 serves as that axle rotates up and down with the tie point of microphone 1 and protection against noise earmuff 2, is connected with signal shift switch 7 on one of them protection against noise earmuff 2, is connected with earphone radio communication apparatus 4 in the optional position of earmuff support 3 by screw.
As shown in Figure 5, earphone radio communication apparatus 4 comprises microphone 1, modulation amplifying circuit 20, radio frequency amplifying circuit 21, signal shift switch 7, demodulator circuit 19, audio power amplifying circuit 18, loud speaker 17, electric power management circuit 16, microphone 1 output signal end is electrically connected with modulation amplifying circuit 20, amplify through modulation amplifying circuit 20, amplifying signal output enters radio frequency amplifying circuit 21 inputs, again by radio frequency amplifying circuit 21 entering signal diverter switches 7; Signal shift switch 7 is radiate by antenna 5 by the voice signal of antenna 5 with microphone 1.And behind signal shift switch 7, enter the input of demodulator circuit 19 by the high-frequency signal that antenna 5 receives, carry out the audio power amplification by entering after demodulator circuit 19 demodulation by audio power amplifying circuit 18, audio power amplifying circuit 18 outputs connect loud speakers 17 again.
As shown in Figure 4, the noise protection earphone is operated in the impulse noise protection earphone system environment, and the impulse noise protection earphone system is made up of a hand-held communication machine 14 and a plurality of protection against noise earphone 15 that is connected with earphone radio communication apparatus 4.
As shown in Figures 2 and 3, the top of hand-held communication machine is identical with the top structure of earphone radio communication apparatus 4, also for being furnished with antenna jack 6, power supply indicator 8, charging socket 9 and mains switch 10 from left to right successively, is plugged with antenna 5 in the antenna jack 6; There are loud speaker phonate hole 11 and microphone sound hole 12 in hand-held communication machine 14 fronts, and hand-held communication machine one side has voice switch 13.
The concrete course of work of impulse noise protection earphone is in the utility model: the command set staff sends instruction by the hand-held communication machine to each operator who wears the noise protection earphone, and each wears noise protection earphone operator can receive instruction simultaneously.Noise protection earphone communication modes is a half-duplex frequency modulation voice call standard, and the operator is if think and command set conversation, realizes answering switching with call function by the voice switch 13 that connects on the protection against noise earphone 15.Wear the operator of noise protection earphone if think and the command set conversation, press voice switch 13, earmuff just is in talking state, talk-through, and trip switch, earmuff just recovers accepting state, can avoid on-site noise to conduct to control desk like this.
When the signal shift switch of hand-held communication machine is pressed, modulation amplifying circuit, radio frequency amplifying circuit in the hand-held set are started working, and demodulator circuit, audio power amplifying circuit quit work, voice signal through the microphone input, by the modulation amplifying circuit modulation, radio frequency amplifying circuit amplifies the back and launches by antenna with the radio frequency form; When voice switch unclamps, demodulator circuit, audio power amplifying circuit are started working in the hand-held set, and modulation amplifying circuit, radio frequency amplifying circuit quit work, antenna begins to receive frequency modulated radio signal, through the demodulator circuit demodulation, after amplifying by audio-frequency power amplifier again, deliver to the loud speaker sounding; After the hand-held communication machine opening power, be in receive status, the duration of giving orders or instructions is pressed voice switch, just can group busy all personnel that wear earphone, unclamps voice switch, can accept the calling that any one wears the personnel of earphone.
Claims (3)
1. impulse noise protection earphone, comprise microphone (1), protection against noise earmuff (2), earmuff support (3), earmuff support (3) one the first from left right sides are connected with protection against noise earmuff (2), it is characterized in that: earmuff support (3) is connected with an earphone radio communication apparatus (4), and the signal shift switch (7) and the microphone (1) of earphone radio communication apparatus (4) are fixed on the protection against noise earmuff (2).
2. impulse noise protection earphone according to claim 1 is characterized in that: described protection against noise earmuff (2) is connected by axle with microphone (1).
3. impulse noise protection earphone according to claim 1, it is characterized in that: described earphone radio communication apparatus (4) comprises microphone, modulation amplifying circuit, radio frequency amplifying circuit, signal shift switch, demodulator circuit, audio power amplifying circuit, earphone, electric power management circuit, the microphone output signal end is electrically connected with modulation amplifying circuit, modulation amplifying circuit is electrically connected with radio frequency amplifying circuit, radio frequency amplifying circuit is electrically connected with signal shift switch, and signal shift switch is electrically connected with antenna circuit; The signal shift switch other end is electrically connected with the input of demodulator circuit, and the demodulator circuit demodulation is electrically connected with audio power amplifying circuit, and audio power amplifying circuit is electrically connected loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201305470U CN201657254U (en) | 2010-03-15 | 2010-03-15 | Impulsive noise prevention earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201305470U CN201657254U (en) | 2010-03-15 | 2010-03-15 | Impulsive noise prevention earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201657254U true CN201657254U (en) | 2010-11-24 |
Family
ID=43122483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201305470U Expired - Fee Related CN201657254U (en) | 2010-03-15 | 2010-03-15 | Impulsive noise prevention earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201657254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104469584A (en) * | 2013-09-12 | 2015-03-25 | 索尼公司 | Bluetooth earplugs |
-
2010
- 2010-03-15 CN CN2010201305470U patent/CN201657254U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104469584A (en) * | 2013-09-12 | 2015-03-25 | 索尼公司 | Bluetooth earplugs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20130315 |