CN206850769U - Audio transmission system based on power line - Google Patents
Audio transmission system based on power line Download PDFInfo
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- CN206850769U CN206850769U CN201720786706.4U CN201720786706U CN206850769U CN 206850769 U CN206850769 U CN 206850769U CN 201720786706 U CN201720786706 U CN 201720786706U CN 206850769 U CN206850769 U CN 206850769U
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Abstract
The utility model discloses a kind of audio transmission system based on power line, belong to electronic communication technology field, including audio extender, audio extender includes audio and extends transmitter and audio extension receiver, audio extension transmitter is connected with audio extension receiver realizes data communication, power line is connected between above-mentioned two parts, the head end that audio extends transmitter is connected with audio input end, the end that audio extends receiver is connected with audio output, data signal can be transmitted, audio tonequality will not be lost relative to analog signal transmission audio；Audio is transmitted relative to conventional digital circuit, digital circuit can be avoided to connect up, be transmitted on family expenses 220v power lines, increases audio transmission distance, reduces and repeats to connect up, wiring is convenient, plug and play；Audio signal is transmitted relative to conventional wireless manner, signal transmission is more stable, solves produced problem in the prior art, can be with wide popularization and application.
Description
Technical field
A kind of audio transmission system based on power line is the utility model is related to, belongs to electronic communication technology field.
Background technology
Current audio transmission is transmitted by audio extender, and audio extender can be with transmission of analogue signal and numeral
Signal, when traditional audio extender transmits data signal, it is made up of transmitting terminal and receiving terminal, transmitting terminal charge completion signal obtains
The effect for taking and compressing, the decoding of receiving terminal charge completion signal and port assignment, farthest transmission range are 60 meters, and centre is logical
Cross cat5/5e/6 netting twines to be attached, the distance of transmission is shorter, and needs to arrange netting twine.
Utility model content
The purpose of this utility model is to provide a kind of audio transmission system based on power line, on existing power line
Audio signal just is transmitted, reduces and repeats to connect up, solve produced problem in the prior art.
Audio transmission system described in the utility model based on power line, including audio extender, audio extender bag
Include audio and extend transmitter and audio extension receiver, audio extension transmitter is connected with audio extension receiver realizes data
Communicate, power line is connected between above-mentioned two parts, the head end that audio extends transmitter is connected with audio input end, and audio extends
The end of receiver is connected with audio output.
Audio signal is inputted by audio input end, and audio extends transmitter and audio signal is handled, and will collect
Digital audio and video signals carry out binary modulated again by power line by Binary Signal Transmission, audio extends receiver and passes through tune
Binary signal is converted to audio digital signals and simulated audio signal by modulation demodulation system, is exported by audio output.
Described audio, which extends inside transmitter, includes modulus conversion chip, the first microcontroller and the first power line carrier
Communication chip, the front and rear connection successively of above-mentioned three parts, and modulus conversion chip connection audio input end.
Audio analog signals convert analog signals into data signal by modulus conversion chip and issue the first microcontroller
Device, the first microcontroller are compressed packing data and transfer data to the first power line carrier communication chip by data in electricity
Transmitted in the line of force.
Described audio, which extends inside receiver, includes the second power line carrier communication chip, the second microcontroller and digital-to-analogue
Conversion chip, the front and rear connection successively of above-mentioned three parts, analog-digital chip connection audio output, the power line are connected to the
Between one power line carrier communication chip and the second power line carrier communication chip.
Carrier data on power line is converted to available data signal by the second power line carrier communication chip, and is sent
To the second microcontroller, second is that data are unpacked decompression and send the data to analog-digital chip, digital-to-analogue conversion by controller
Chip passes through audio output playing audio-fequency data.
Described modulus conversion chip and analog-digital chip connects the first microcontroller and second respectively by IIS interfaces
Microcontroller, the first microcontroller and the second microcontroller connect the first power line carrier communication chip respectively by EPHY interfaces
With the second power line carrier communication chip.
Extend emitter terminals in audio, audio analog signals convert analog signals into digital letter by modulus conversion chip
Number and the first controller is issued by IIS interfaces, the first microcontroller is compressed packing data, and data are connect by EPHY
Mouth transfers data to the first power line carrier communication chip and transmits data on power line；Second power line carrier communication core
Carrier data on power line is converted to available data signal by piece, and the second microcontroller is sent to by EPHY interfaces, the
Two microcontrollers, which unpack data, to be decompressed and data is sent into analog-digital chip playing audio-fequency data by IIS interfaces.
The first described microcontroller and the second microcontroller use MT7688 chips.
Described modulus conversion chip and analog-digital chip use WM8960 chips.
The first described power line carrier communication chip and the second power line carrier communication chip use AR7420 chips.
The utility model compared with prior art, has the advantages that：
A kind of audio transmission system based on power line is provided, data signal can be transmitted, relative to analog signal transmission
Audio will not lose audio tonequality；Audio is transmitted relative to conventional digital circuit, digital circuit can be avoided to connect up, in family expenses
Transmitted on 220v power lines, increase audio transmission distance, reduced and repeat to connect up, wiring is convenient, plug and play；Relative to traditional nothing
Line mode transmits audio signal, and signal transmission is more stable, solves produced problem in the prior art, and can be widely popularized should
With.
Brief description of the drawings
Fig. 1 is that the circuit of the utility model embodiment connects block diagram；
In figure：1st, audio input end；2nd, audio extends transmitter；3rd, power line；4th, audio extends receiver；5th, audio is defeated
Go out end；21st, modulus conversion chip；22nd, the first microcontroller；23rd, the first power line carrier communication chip；41st, the second power line
Carrier communication chip；42nd, the second microcontroller；43rd, analog-digital chip.
Embodiment
The utility model is further described with reference to the accompanying drawings and examples：
Embodiment
As shown in figure 1, the audio transmission system described in the utility model based on power line, including audio extender, sound
Frequency extender includes audio and extends transmitter 2 and audio extension receiver 4, and audio extends transmitter 2 and audio extends receiver 4
It is connected and realizes data communication, power line 3 is connected between above-mentioned two parts, the head end that audio extends transmitter 2 is connected with sound
Frequency input terminal 1, the end that audio extends receiver 4 are connected with audio output 5.
In order to further illustrate above-described embodiment, it is micro- including modulus conversion chip 21, first that audio extends the inside of transmitter 2
The power line carrier communication chip 23 of controller 22 and first, the front and rear connection successively of above-mentioned three parts, and modulus conversion chip 21 connects
Connect audio input end 1.
In order to further illustrate above-described embodiment, audio, which extends the inside of receiver 4, includes the second power line carrier communication core
Piece 41, the second microcontroller 42 and analog-digital chip 43, the front and rear connection successively of above-mentioned three parts, analog-digital chip 43 connect
Audio output 5, power line 3 be connected to the first power line carrier communication chip 23 and the second power line carrier communication chip 41 it
Between.
In order to further illustrate that above-described embodiment, modulus conversion chip 21 and analog-digital chip 43 pass through IIS interfaces point
The first microcontroller 22 and the second microcontroller 42 are not connected, and the first microcontroller 22 and the second microcontroller 42 are connect by EPHY
Mouth connects the first power line carrier communication chip 23 and the second power line carrier communication chip 41 respectively.
In order to further illustrate above-described embodiment, the first microcontroller 22 and the second microcontroller 42 use MT7688 cores
Piece.
In order to further illustrate above-described embodiment, modulus conversion chip 21 and analog-digital chip 43 use WM8960 cores
Piece.
In order to further illustrate above-described embodiment, the first power line carrier communication chip 23 and the second power line carrier communication
Chip 41 uses AR7420 chips.
The operation principle of the present embodiment is：Audio signal is inputted by audio input end 1, extends transmitter 2 in audio
Point, audio analog signals convert analog signals into data signal by modulus conversion chip 21 and issue the by IIS interfaces
One microcontroller 22, the first microcontroller 22 is compressed packing data, and data are transferred data to by EPHY interfaces
AR7420 chips transmit data on power line 3；
Extend the part of receiver 4 in audio, the carrier data on power line 3 is converted to available numeral by AR7420 chips
Signal, the second microcontroller 42 is sent to by EPHY interfaces, and data are unpacked and decompressed, the data after decompression are passed through into IIS
Interface is sent to analog-digital chip 43, and analog-digital chip 43 passes through the playing audio-fequency data of audio output 5 after changing.
By the connection of above-mentioned device, it is micro- by first again that analogue audio frequency amount is converted into digital quantity by modulus conversion chip 21
Controller 22 transfers data to the first power line carrier communication chip 23 and is modulated to be transmitted on power line 3, transmission range
Up to more than 200M, then the second microcontroller 42 is sent the data to by the second power line carrier communication chip 41 and then passed through
Digital quantity voice data is converted into analog data and played out by analog-digital chip 43, has the spy such as high-fidelity, low latency
Point, and the transmission means such as point-to-point, point-to-points can be realized so that voice data transmits on family expenses 220v power lines 3, increase
Audio transmission distance, reduce wiring cost.
Using the audio transmission system based on power line of the embodiment of the present utility model described above in association with accompanying drawing,
Audio signal can be transmitted on existing power line 3, reduces and repeats to connect up, solve produced problem in the prior art.But this
Utility model is not limited to described embodiment, and in the case where not departing from principle of the present utility model and spirit, these are right
Change, modification, replacement and the deformation that embodiment is carried out are still fallen within the scope of protection of the utility model.
Claims (7)
1. a kind of audio transmission system based on power line, including audio extender, it is characterised in that：Described audio extender
Extend transmitter (2) including audio and audio extends receiver (4), audio extends transmitter (2) and audio extends receiver (4)
It is connected and realizes data communication, power line (3) is connected between above-mentioned two parts, audio extends the head end connection of transmitter (2)
There is audio input end (1), the end that audio extends receiver (4) is connected with audio output (5).
2. the audio transmission system according to claim 1 based on power line, it is characterised in that：Described audio extends hair
Include modulus conversion chip (21), the first microcontroller (22) and the first power line carrier communication chip (23) inside emitter (2),
The front and rear connection successively of above-mentioned three parts, and modulus conversion chip (21) connection audio input end (1).
3. the audio transmission system according to claim 2 based on power line, it is characterised in that：Described audio, which extends, to be connect
Receive includes the second power line carrier communication chip (41), the second microcontroller (42) and analog-digital chip (43) inside device (4),
The front and rear connection successively of above-mentioned three parts, analog-digital chip (43) connection audio output (5), the power line (3) are connected to
Between first power line carrier communication chip (23) and the second power line carrier communication chip (41).
4. the audio transmission system according to claim 3 based on power line, it is characterised in that：Described analog-to-digital conversion core
Piece (21) and analog-digital chip (43) connect the first microcontroller (22) and the second microcontroller respectively by IIS interfaces
(42), the first microcontroller (22) and the second microcontroller (42) connect the first power line carrier communication respectively by EPHY interfaces
Chip (23) and the second power line carrier communication chip (41).
5. the audio transmission system based on power line according to claim 3 or 4, it is characterised in that：Described first is micro-
Controller (22) and the second microcontroller (42) use MT7688 chips.
6. the audio transmission system based on power line according to claim 3 or 4, it is characterised in that：Described modulus turns
Change chip (21) and analog-digital chip (43) and use WM8960 chips.
7. the audio transmission system based on power line according to claim 3 or 4, it is characterised in that：The first described electricity
Powerline carrier communication chip (23) and the second power line carrier communication chip (41) use AR7420 chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720786706.4U CN206850769U (en) | 2017-06-30 | 2017-06-30 | Audio transmission system based on power line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720786706.4U CN206850769U (en) | 2017-06-30 | 2017-06-30 | Audio transmission system based on power line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206850769U true CN206850769U (en) | 2018-01-05 |
Family
ID=60803406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720786706.4U Active CN206850769U (en) | 2017-06-30 | 2017-06-30 | Audio transmission system based on power line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206850769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067434A (en) * | 2018-09-18 | 2018-12-21 | 同响科技股份有限公司 | Via the synchronization Public Address System of power line transmission digital audio-frequency data |
-
2017
- 2017-06-30 CN CN201720786706.4U patent/CN206850769U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067434A (en) * | 2018-09-18 | 2018-12-21 | 同响科技股份有限公司 | Via the synchronization Public Address System of power line transmission digital audio-frequency data |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190723 Address after: 272000 Room 18, 9th Floor, Building A, Huijing International City, 47 Jinyu Road, Jinning City, Shandong Province Co-patentee after: Jining institute Patentee after: Shandong Time Information Technology Co., Ltd. Address before: 272000 East Household of East Unit 1 of Maolin Apartment Building 7, Rencheng District, Jining City, Shandong Province Co-patentee before: Jining institute Patentee before: Shandong Chuan Jie Information Technology Co., Ltd. |