CN205160738U - Novel anti -interference infrared wireless earphone - Google Patents
Novel anti -interference infrared wireless earphone Download PDFInfo
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- CN205160738U CN205160738U CN201520869927.9U CN201520869927U CN205160738U CN 205160738 U CN205160738 U CN 205160738U CN 201520869927 U CN201520869927 U CN 201520869927U CN 205160738 U CN205160738 U CN 205160738U
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Abstract
The utility model belongs to the technical field of electron product technology and specifically relates to a novel anti -interference infrared wireless earphone. It includes signal transmitter who comprises first casing, modulation coding ware, signal detection head and infrared signal transmitter and the earphone body that comprises second casing, infrared signal receiver, demodulation decoder and audio amplifier, carrying the receiver to infrared signal through the infrared signal transmitter behind the audio signal encode modulating processing that the modulation coding ware detected the signal detection head, forming analog signal behind the signal decode of demodulation decoder to the output of infrared signal receiver, audio amplifier amplifies analog signal and handles back audio signal 1, and modulation coding ware and demodulation decoder all include digital a ring that mainly comprises CD4046 type CMOS phase -locked loop audio signal 3. The utility model discloses utilize receipt and the transport of CD4046 type CMOS phase -locked loop integrated circuit with frequency modulation's mode realization signal for whole earphone has advantages such as transmission distance is far away, electromagnetism interference immunity is strong.
Description
Technical field
The utility model relates to technical field of electronic products, especially a kind of New Anti-interference Infrared wireless earphone.
Background technology
Many defects such as known, infrared earphone is a kind of earphone based on infrared transmission technology, and at present, due to by the restriction of circuit structure design, existing infrared earphone ubiquity poor stability, directivity be poor, be easily disturbed; Meanwhile, due to the restriction by structural design, also there is complex structure, carry and use the problems such as inconvenience in existing infrared earphone.Therefore, how to propose improvement project to existing infrared earphone, be technical problem urgently to be resolved hurrily in current industry.
Utility model content
For the deficiency that above-mentioned prior art exists, the purpose of this utility model be a kind of simple and compact for structure, to use and easy to carry, antijamming capability is strong, the New Anti-interference Infrared wireless earphone of stable performance.
To achieve these goals, the utility model adopts following technical scheme:
A kind of New Anti-interference Infrared wireless earphone, it comprises signal projector and headset body, described signal projector comprises the first housing, be packaged in the modulating coder in the first housing and the signal detection head be installed on the first housing and Infrared Projector, and described headset body comprises the second housing, be installed in the infrared signal receiver on the second housing and the demodulating and decoding device that is packaged in the second housing and audio frequency amplifier;
Infrared signal receiver is delivered to by Infrared Projector after the coding audio signal modulation treatment that signal detection head detects by described modulating coder, described demodulating and decoding device forms analog signal after decoding to the signal that infrared signal receiver exports, and described audio frequency amplifier externally exports after carrying out amplification process to analog signal;
Described modulating coder comprises the first digital rings, the first potentiometer and the first triode, between the base stage that described first potentiometer is connected to the first triode and collector electrode, the base stage of described first triode is directly connected with signal detection head by the first electric capacity connection signal detection head, emitter, and the VCO control input end of described first digital rings connects the collector electrode of the first triode, the input of VCO output connection Infrared Projector by the second electric capacity; Described demodulating and decoding device comprises the second digital rings, the input that signal input part connects the output of infrared signal receiver, signal output part connects audio frequency amplifier of described second digital rings; Described first digital rings and the second digital rings are CD4046 type CMOS phase-locked loop intergrated circuit.
Preferably, described Infrared Projector comprises the second triode, the base stage of described second triode connects the VCO output of the first digital rings, the first infrared transmitting tube, the second infrared transmitting tube and the first resistance is in series with successively between the collector electrode of described second triode and base stage, the base stage of described second triode also by the second grounding through resistance, emitter by the 3rd resistance of connecting successively and the 4th grounding through resistance, the two ends of described 4th resistance are parallel with the 3rd electric capacity.
Preferably, described infrared signal receiver comprises power amplifier, the second potentiometer and photodiode, a stiff end of described second potentiometer connects the negative pole end of power amplifier, the in-phase input end of other end connection power amplifier, the signal input part that the inverting input of described power amplifier connects the adjustable side of the second potentiometer, output connects the second digital rings, the positive pole of described photodiode connects by the 4th electric capacity the positive terminal that power sends out the negative pole end of amplifier, negative pole connects power amplifier.
Preferably, described audio frequency amplifier comprises a MAX9722 type Earphone Amplifier, each signal input part of described Earphone Amplifier is all connected the signal output part of the second digital rings with the 5th electric capacity by the 5th resistance of connecting successively, be all connected with one the 3rd potentiometer between each signal input part of described Earphone Amplifier and corresponding signal output part.
Preferably, described headset body also comprises a base plate, and described second housing is installed on base plate, and the lower surface of described base plate is provided with roller, the edge of upper surface is provided with snap ring for clamping the first housing.
Owing to have employed such scheme, the utility model utilizes CD4046 type CMOS phase-locked loop intergrated circuit to realize reception and the conveying of signal in warbled mode, makes whole earphone have the advantage such as long transmission distance, electromagnetism strong interference immunity; Its structure is simple, storage is carried and easy to use, has very strong practical value and market popularization value.
Accompanying drawing explanation
Fig. 1 is the control principle block diagram of the utility model embodiment;
Fig. 2 is the structural representation of the utility model embodiment;
Fig. 3 is the circuit structure diagram of the modulating coder of the utility model embodiment;
Fig. 4 is the circuit structure diagram of the demodulating and decoding device of the utility model embodiment;
Fig. 5 is the circuit structure diagram of the Infrared Projector of the utility model embodiment;
Fig. 6 is the circuit structure diagram of the infrared signal receiver of the utility model embodiment;
Fig. 7 is the circuit structure diagram of the audio frequency amplifier of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figures 1 to 7, a kind of New Anti-interference Infrared wireless earphone that the utility model embodiment provides, it comprises the In-Ear Headphones body being plugged in signal projector on audio-frequence player device and carrying out for people wearing; Wherein, signal projector comprises the first housing a, be packaged in the modulating coder 1 in the first housing a and the signal detection head 2 be installed on the first housing a and Infrared Projector 3, and headset body then comprises the second housing b, be installed in the infrared signal receiver 4 on the second housing b and the demodulating and decoding device 5 be packaged in the second housing b and audio frequency amplifier 6; Infrared signal receiver 4 is delivered to by Infrared Projector 3 after the coding audio signal modulation treatment that signal detection head 2 detects by modulating coder 1, and demodulating and decoding device 5 forms analog signal after the signal exported infrared signal receiver 4 is decoded, audio frequency amplifier 6 pairs of analog signals externally export after carrying out amplification process; The modulating coder 1 of the present embodiment comprises the first digital rings U1, the first potentiometer Rt1 and the first triode Q1, between the base stage that first potentiometer Rt1 is connected to the first triode Q1 and collector electrode, the base stage of the first triode Q1 is directly connected with signal detection head 2 by the first electric capacity C1 connection signal detection head 2, emitter, and the VCO control input end of the first digital rings U1 connects the collector electrode of the first triode Q1, the input of VCO output connection Infrared Projector 3 by the second electric capacity C2; Demodulating and decoding device 5 comprises the second digital rings U2, the input that signal input part connects the output of infrared signal receiver 4, signal output part connects audio frequency amplifier 6 of the second digital rings U2; First digital rings U1 and the second digital rings U2 is CD4046 type CMOS phase-locked loop intergrated circuit.
With this, utilize CD4046 type CMOS phase-locked loop intergrated circuit to realize reception and the conveying of signal in warbled mode, make whole earphone have the advantage such as long transmission distance, electromagnetism strong interference immunity; Ensure that audio signal is undistorted by utilizing the first triode Q1 be arranged between the first digital rings U1 and signal detection head 2.
For ensureing that signal can carry out the conveying effect without dead angle, increase the radiation areas of signal, the Infrared Projector 3 of the present embodiment comprises the second triode Q2 (it is 8050 type triodes preferably), the base stage of the second triode Q2 connects the VCO output of the first digital rings U1, the first infrared transmitting tube D1 is in series with successively between the collector electrode of the second triode Q2 and base stage, second infrared transmitting tube D2 and the first resistance R1, simultaneously, the base stage of the second triode Q2 is also by the second resistance R2 ground connection, emitter is by the 3rd resistance R3 that connects successively and the 4th resistance R4 ground connection, the 3rd electric capacity C3 is parallel with at the two ends of the 4th resistance R4.Thus utilize infrared transmitting tube to coordinate the amplification characteristic of the second triode Q2, the audio signal after modulating-coding is converted to infrared signal, and launches through amplifying the backward infrared signal receiver 4 of process; Because whole reflector adopts the basic amplification principle of common emitter, make it have Current amplifier effect, output carrying load ability is strong, serve the effect of impedance transformation, isolation buffer, make signal not easily distortion in transmitting procedure, and the radiation areas of infrared transmitting tube also obtain expansion to a certain extent.
For ensureing the reception of infrared signal, the infrared signal receiver 4 of the present embodiment comprises LM386 type power amplifier A, second potentiometer Rt2 and photodiode D, a stiff end of the second potentiometer Rt2 connects the negative pole end of power amplifier A, the other end connects the in-phase input end of power amplifier A, simultaneously, the inverting input of power amplifier A connects the adjustable side of the second potentiometer Rt2, output connects the signal input part of the second digital rings U2, the positive pole of photodiode D connects by the 4th electric capacity C4 the negative pole end that power sends out amplifier A, negative pole connects the positive terminal of power amplifier A, with this, utilize the characteristic of photodiode D to receive infrared signal, and coordinate the signal that the amplification characteristic of power amplifier A launches to receive infrared transmitter 3, then flow to demodulating and decoding device 5 again and carry out decoding and changing.
As a preferred version, 6, the audio frequency amplifier of the present embodiment comprises a MAX9722 type Earphone Amplifier U3, each signal input part of Earphone Amplifier U3 is all connected the signal output part of the second digital rings U2 with the 5th electric capacity C5 by the 5th resistance R5 that connects successively, be all connected with one the 3rd potentiometer Rt3 between each signal input part of Earphone Amplifier U3 and corresponding signal output part; Utilize the signal of Earphone Amplifier U3 to input carry out power amplification and realize the final output of audio signal with this, utilize the 3rd potentiometer Rt3 then can regulate in real time the volume of earphone.
Storage for ease of whole earphone is carried and is used, the headset body of the present embodiment also comprises a base plate c, second housing b is installed on base plate c, the lower surface of base plate c is provided with roller d, the edge of upper surface is provided with snap ring e for clamping the first housing a; With this, whole headset body can be made to form the version being similar to slide plate, be not only conducive to the aesthetic appearance promoting earphone, and when carrying out storage to earphone and carrying, snap ring e can be utilized to be installed in headset body by the first housing a, to be conducive to the loss preventing corresponding building block.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a New Anti-interference Infrared wireless earphone, it is characterized in that: it comprises signal projector and headset body, described signal projector comprises the first housing, be packaged in the modulating coder in the first housing and the signal detection head be installed on the first housing and Infrared Projector, and described headset body comprises the second housing, be installed in the infrared signal receiver on the second housing and the demodulating and decoding device that is packaged in the second housing and audio frequency amplifier;
Infrared signal receiver is delivered to by Infrared Projector after the coding audio signal modulation treatment that signal detection head detects by described modulating coder, described demodulating and decoding device forms analog signal after decoding to the signal that infrared signal receiver exports, and described audio frequency amplifier externally exports after carrying out amplification process to analog signal;
Described modulating coder comprises the first digital rings, the first potentiometer and the first triode, between the base stage that described first potentiometer is connected to the first triode and collector electrode, the base stage of described first triode is directly connected with signal detection head by the first electric capacity connection signal detection head, emitter, and the VCO control input end of described first digital rings connects the collector electrode of the first triode, the input of VCO output connection Infrared Projector by the second electric capacity; Described demodulating and decoding device comprises the second digital rings, the input that signal input part connects the output of infrared signal receiver, signal output part connects audio frequency amplifier of described second digital rings; Described first digital rings and the second digital rings are CD4046 type CMOS phase-locked loop intergrated circuit.
2. a kind of New Anti-interference Infrared wireless earphone as claimed in claim 1, it is characterized in that: described Infrared Projector comprises the second triode, the base stage of described second triode connects the VCO output of the first digital rings, the first infrared transmitting tube, the second infrared transmitting tube and the first resistance is in series with successively between the collector electrode of described second triode and base stage, the base stage of described second triode also by the second grounding through resistance, emitter by the 3rd resistance of connecting successively and the 4th grounding through resistance, the two ends of described 4th resistance are parallel with the 3rd electric capacity.
3. a kind of New Anti-interference Infrared wireless earphone as claimed in claim 2, it is characterized in that: described infrared signal receiver comprises power amplifier, second potentiometer and photodiode, a stiff end of described second potentiometer connects the negative pole end of power amplifier, the other end connects the in-phase input end of power amplifier, the inverting input of described power amplifier connects the adjustable side of the second potentiometer, output connects the signal input part of the second digital rings, the positive pole of described photodiode connects by the 4th electric capacity the negative pole end that power sends out amplifier, negative pole connects the positive terminal of power amplifier.
4. a kind of New Anti-interference Infrared wireless earphone as claimed in claim 3, it is characterized in that: described audio frequency amplifier comprises a MAX9722 type Earphone Amplifier, each signal input part of described Earphone Amplifier is all connected the signal output part of the second digital rings with the 5th electric capacity by the 5th resistance of connecting successively, be all connected with one the 3rd potentiometer between each signal input part of described Earphone Amplifier and corresponding signal output part.
5. a kind of New Anti-interference Infrared wireless earphone according to any one of claim 1-4, it is characterized in that: described headset body also comprises a base plate, described second housing is installed on base plate, and the lower surface of described base plate is provided with roller, the edge of upper surface is provided with snap ring for clamping the first housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520869927.9U CN205160738U (en) | 2015-11-03 | 2015-11-03 | Novel anti -interference infrared wireless earphone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520869927.9U CN205160738U (en) | 2015-11-03 | 2015-11-03 | Novel anti -interference infrared wireless earphone |
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| Publication Number | Publication Date |
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| CN205160738U true CN205160738U (en) | 2016-04-13 |
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| CN201520869927.9U Active CN205160738U (en) | 2015-11-03 | 2015-11-03 | Novel anti -interference infrared wireless earphone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838875A (en) * | 2019-11-13 | 2020-02-25 | 佛山科学技术学院 | Infrared-based audio communication system |
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- 2015-11-03 CN CN201520869927.9U patent/CN205160738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838875A (en) * | 2019-11-13 | 2020-02-25 | 佛山科学技术学院 | Infrared-based audio communication system |
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