CN108365864A - A kind of wireless digital transmitting device - Google Patents
A kind of wireless digital transmitting device Download PDFInfo
- Publication number
- CN108365864A CN108365864A CN201810158240.2A CN201810158240A CN108365864A CN 108365864 A CN108365864 A CN 108365864A CN 201810158240 A CN201810158240 A CN 201810158240A CN 108365864 A CN108365864 A CN 108365864A
- Authority
- CN
- China
- Prior art keywords
- infrared
- receiving device
- wireless digital
- infrared receiving
- launcher
- 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.)
- Pending
Links
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000005236 sound signal Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- Optical Communication System (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
A kind of wireless digital transmitting device, it is wirelessly connected including infrared launcher and infrared receiving device, it is provided with the infrared launcher of transmitting triode and infrared-emitting diode composition in infrared launcher, the infrared receiving device of the compositions such as infrared receiving diode, audio amplifier integrated block and earphone is provided in infrared receiving device.The present invention can realize directionless and glitch-free wireless digital transmission.It is constituted by emitting and receiving two parts.Directionless reception may be implemented in the present invention indoors, if being equipped with more receivers, can also more people listen to simultaneously, due to using infrared ray as transmission media, therefore the interference of avoidable radio wave.
Description
Technical field
The present invention relates to a kind of infrared emission and reception devices, and it is directionless and noiseless to relate in particular to a kind of energy realization
A kind of wireless digital transmitting device.
Background technology
Currently, when watching TV, in order to not influence other people work, study and rest, usually using television set external connection ear
Machine, but earphone cable can be such that the activity of people is subject to certain restrictions, and feel very inconvenient.Some realizes wireless audio with hyperfrequency
Transmission, but the interference of ultra-high frequency wireless electric wave is very big, there is prodigious interference if device for switching etc..Some has also used infrared acoustic frequency
Transmission, but directionality is very strong, and the place that can only be pinpointed at one receives.
Invention content
The purpose of the present invention is to overcome the deficiencies of the prior art, provide it is a kind of can realize it is directionless and glitch-free one
Kind wireless digital transmitting device.
The technical solution adopted by the present invention to solve the technical problems is：A kind of wireless digital transmitting device, including it is infrared
Emitter and infrared receiving device are wirelessly connected, and transmitting triode and infrared-emitting diode are provided in infrared launcher
The infrared launcher of composition is provided with infrared receiving diode, audio amplifier integrated block and earphone etc. in infrared receiving device
The infrared receiving device of composition.Infrared-emitting diode is at least 4, is mounted on four angles on transmitter, does not surpass at most
100 are crossed, directionless transmitting is realized in each different position being mounted on transmitter for being directed at each different direction
And reception, the quantity of infrared-emitting diode can according to determined using the area of transmitting.Infrared receiving device is at least 1
It is a, it no more than 100, should specifically be determined according to the number of wireless receiving number of users, in an infrared receiving device
In reception earphone be at least 1, it is a, no more than 10, should specifically be determined according to the number that earphone uses.Infrared emission
The supply voltage minimum direct current 3V of device, not more than direct current 24V, the minimum direct current of supply voltage of infrared receiving device
3V, not more than direct current 24V.
The invention has the advantages that directionless and glitch-free wireless digital transmission can be realized.By emitting and receiving two
Part is constituted.Directionless reception may be implemented in the present invention indoors, if be equipped with more receivers, can also more people listen to simultaneously, by
In use infrared ray as transmission media, therefore it can avoid the interference of radio wave.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the receiving circuit figure of the embodiment of the present invention one.
Fig. 2 is the radiating circuit figure of the embodiment of the present invention one.
R1 is biasing resistor in infrared launcher, and R2 is current-limiting resistance, and C12 and C13 are power filtering capacitors.It is infrared to connect
R3 is the biasing resistor of VD5 in receiving apparatus, and C5 is audio transmission capacitance, and C2, C3, C4 are alternating current bypass capacitances, and C6, C7 are power supplys
Filter capacitor.
Specific implementation mode
Implement a kind of wireless digital transmitting device of the present invention, a kind of wireless digital transmitting device, including infrared emission dress
It sets（A）And infrared receiving device（B）It is wirelessly connected, infrared launcher（A）In be provided with transmitting triode（VT）With infrared hair
Penetrate diode（VD1）、（VD2）、（VD3）、（VD4）The infrared launcher of composition, in the infrared receiving device（B）Middle setting
There is infrared receiving diode（VD5）, audio amplifier integrated block（IC）And earphone（CK）The infrared receiving device of equal compositions.
Implement a kind of wireless digital transmitting device of the present invention, infrared-emitting diode（VD1）、（VD2）、（VD3）、
（VD4）Minimum is 4, is mounted on four angles on transmitter, no more than 100, is mounted on each on transmitter
Directionless transmitting and reception are realized for being directed at each different direction, the quantity of infrared-emitting diode can in different positions
With according to determined using the area of transmitting.
Implement a kind of wireless digital transmitting device of the present invention, infrared receiving device（B）It it is at least 1, no more than
It 100, should specifically be determined according to the number of wireless receiving number of users, in an infrared receiving device（B）In reception ear
Machine（CK）It is at least 1, it is a, it no more than 10, should specifically be determined according to the number that earphone uses.Infrared launcher
（A）Supply voltage minimum direct current 3V, not more than direct current 24V, infrared receiving device（B）Supply voltage it is minimum straight
Flow 3V, not more than direct current 24V.
A kind of wireless digital transmitting device for implementing the present invention can realize directionless and glitch-free wireless digital transmission.
It is constituted by emitting and receiving two parts.Emitting portion circuit theory is：Sound accompaniment after frequency discrimination, i.e. audio signal are inputted by IN points,
Triode VT amplifications are sent to through capacitance C11, is then connected by multiple infrared transmitting tube VD and emits output.Due to the transmitting of transmitting tube
Intensity is directly proportional to by its electric current, so the infrared ray that VD1, VD2, VD3, VD4 are sent out, is just adjusted by audio signal
System.It is distorted in order to prevent, VD1, VD2, VD3, VD4 will set certain biasing.Receiving portion circuit theory is：Using one piece
Audio amplification circuit LM386, VD5 are infrared receiver tube.When by the infrared radiation of modulates audio signals to VD,
Its both ends generates an electric signal identical with audio signal changing rule, is coupled to IC through C1, is amplified, then is inserted through earphone
Hole exports.Since IC has power amplification effect, so can be listened to simultaneously for 1 to 10 set of headphones.The present invention indoors can be real
Existing directionless reception, if being equipped with more receivers, can also more people listen to simultaneously, since use infrared ray is as transmission media, therefore
It can avoid the interference of radio wave.
A kind of wireless digital transmitting device for implementing the present invention, using direct amplitude modulation system.In order to make output
Luminous power makees linear change with driving current, and does not generate distortion, and as crystal amplifier, also give infraluminescence two
The certain quiescent bias current of pole pipe.In this way, when there is driving current both voice-frequency signalling current inputs, operating point is just in infrared hair
It penetrates on the output characteristic curve of diode and moves up and down, the infrared ray amplitude and phase that infrared-emitting diode is sent out are by driving electricity
The waveform of stream changes.In this type of drive, the size of driving current is controlled in the characteristic areas XianΩXing, is otherwise sent out
Non-linear region will be entered by penetrating diode, generate non-linear distortion.The reason of R1 is arranged in infrared transmitting circuit is that this.
A kind of wireless digital transmitting device for implementing the present invention, first chooses component：Triode VT selects 8050
Middle power tube, Pcm=300mW, Icm=500mA, VD1, VD2, VD3, VD4 are infrared emitting diode, cannot use photoelectricity two
Otherwise pole pipe is interfered by visible light, influence reception.Power supply is using commercially available alternating current steady voltage plug or uses integrated three-terminal regulator
7812 self-control regulated power supplies.In infrared receiving device, VD5 infrared receiving diodes, power amplifier a piece of LM386 integrated packages, ear
Machine 8-16 Ω micro earpieces.
Debugging and use：The emitting portion of infrared launcher is debugged, adjust R1 make VT collector currents for 25-30mA i.e.
Can, the direction of the launch of four infrared light emitting diodes VD1, VD2, VD3, VD4 are adjusted, one to front, one to room
Top, other two difference, two side to left and right, such receiver can realize non-directional reception indoors, while consider its spoke
Penetrate range, allow their Net long wave radiation angle some overlapping.The receiving portion of infrared receiving device is debugged, as long as installation nothing
Accidentally, need not debug can work.
The emitting portion of infrared launcher may be mounted inside television, using 12V power supply power supplies in machine.Signal is defeated
Enter the ends IN, is connected to volume potentiometer one end.For the television set of the direct current volume control using integrated circuit, by the ends IN and can connect
Ground terminates to loudspeaker both ends, but to add a switch, and loudspeaker are turned off and are more convenient using headphone output socket.Adjust sound
Amount makes its forwarding apart from farthest and undistorted.Transparent red or white organic glass can be installed before infrared transmitting tube and reception pipe
Glass piece.
Implement the present invention, easy to use, securely and reliably, effect is fine.
Claims (4)
1. a kind of wireless digital transmitting device, including infrared launcher（A）And infrared receiving device（B）It is wirelessly connected, it is special
Sign is, in the infrared launcher（A）In be provided with transmitting triode（VT）And infrared-emitting diode（VD1）、
（VD2）、（VD3）、（VD4）The infrared launcher of composition, infrared receiving device（B）In be provided with infrared receiving diode
（VD5）, audio amplifier integrated block（IC）And earphone（CK）The infrared receiving device of equal compositions.
2. a kind of wireless digital transmitting device according to claim 1, feature is in the infrared-emitting diode
（VD1）、（VD2）、（VD3）、（VD4）Minimum is 4, is mounted on four angles on transmitter, no more than 100, peace
Directionless transmitting and reception are realized in each different position on transmitter for being directed at each different direction, infrared
The quantity of emitting diode can according to determined using the area of transmitting.
3. a kind of wireless digital transmitting device according to claim 1, feature is in the infrared receiving device（B）At least
1, no more than 100, specifically should according to wireless receiving number of users number determine, filled in an infrared receiver
It sets（B）In reception earphone（CK）It is at least 1, it is a, it no more than 10, specifically should be according to the number that earphone uses come really
It is fixed.
4. a kind of wireless digital transmitting device according to claim 1, feature is in the infrared launcher（A）Electricity
Source voltage minimum direct current 3V, not more than direct current 24V, infrared receiving device（B）The minimum direct current 3V of supply voltage, most
Height is no more than direct current 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810158240.2A CN108365864A (en) | 2018-02-25 | 2018-02-25 | A kind of wireless digital transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810158240.2A CN108365864A (en) | 2018-02-25 | 2018-02-25 | A kind of wireless digital transmitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108365864A true CN108365864A (en) | 2018-08-03 |
Family
ID=63002873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810158240.2A Pending CN108365864A (en) | 2018-02-25 | 2018-02-25 | A kind of wireless digital transmitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108365864A (en) |
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 |
-
2018
- 2018-02-25 CN CN201810158240.2A patent/CN108365864A/en active Pending
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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180803 |
|
| WD01 | Invention patent application deemed withdrawn after publication |