CN203466810U - Audio remote access and playing system - Google Patents
Audio remote access and playing system Download PDFInfo
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- CN203466810U CN203466810U CN201320010056.6U CN201320010056U CN203466810U CN 203466810 U CN203466810 U CN 203466810U CN 201320010056 U CN201320010056 U CN 201320010056U CN 203466810 U CN203466810 U CN 203466810U
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Abstract
An audio remote access and playing system is provided. The system includes a sound source server and a playing terminal; the sound source server is used for storing sound source files; the playing terminal is used for playing the sound source files; the playing terminal obtains sound source data from the sound source server through performing active requesting so as to perform decoded playing; and the sound source server communicates with the playing terminal through a high-speed power carrier communication mode. According to the audio remote access and playing system of the utility model, all on-site existing power lines can be utilized to install the system, and therefore, re-wiring is not required, and installation efficiency can be improved, and cost can be saved for a user.
Description
Technical field
The present invention relates to a kind of by power line transmission sound frequently signal system that the access of audio signal and broadcasting are controlled.
Background technology
Along with the raising of life, people become an indispensable part in life gradually for the hobby of music, at home, hotel, in other public places, not only wish to hear music whenever and wherever possible, also wish to enjoy easily the music of oneself liking.
At present building audio system has and adopts tone frequency channel wire connection scheme, also has the less radio-frequency scheme of adopting.They have defect separately: adopt tone frequency channel wire connection scheme will again draw very long line when actual arrangement, also want external attached power supply adaptor, once shift one's position, rearrange again, and very inconvenient.There is radio-frequency radiation in the less radio-frequency scheme based on RF-wise such as WIFI, through walls ability is more weak on the other hand on the one hand, can not cover each corner.
In field of signal transmissions, favourable technology of carrying out transfer of data with power line, for example CN101707571A.Using the advantage of power line is the problem that can solve bracing wire again, and it does not have the delay in wireless communication technology, without dead angle, cover, and without radio-frequency radiation, etc.But this technology is not also used in building audio transmission system at present, so fail to solve the problem of rewiring in audio system.Reason is the technical problem that need to solve the each side such as stored program controlled, method and equipment.
Summary of the invention
The present invention is directed to the technical problem existing in above-mentioned background technology, proposed a kind of audio frequency remote access and Play System.
The technical problem that the present invention solves comprises: at house or office building etc., need the place of playing audio-fequency data, make full use of existing power line and carry out transmission of audio signal, and realize remote access and the broadcasting of audio frequency.
Technical scheme of the present invention is as follows:
Audio frequency remote access and a Play System, this system comprises a source of sound server, one or more playback terminal; Described source of sound server is used for depositing audio files, and it comprises power module, central processing module, memory module, high-speed power carrier module, interactive module; Described playback terminal is used for playing audio files, and it comprises power module, central processing module, high-speed power carrier module, audio coding decoding module; Described playback terminal obtains the sound source data broadcasting of decoding by active request from source of sound server.
?wherein, described playback terminal also comprises audio frequency input module, and described audio frequency input module is inputted sound source data from outside.
Wherein, described playback terminal is encoded external voice input output to source of sound server and preserves.
Wherein, described power module is ACDC power module.
Wherein, described source of sound server and described playback terminal transmit data by power line.
Wherein, described source of sound server and described playback terminal are connected respectively on the zero line and live wire of power line by two-pin plug separately, and described electric power is realized the transmission of voice data.
Wherein, power line is that the place that described system is installed possesses.
Wherein, described power line is arranged together with described system.
Wherein, described playback terminal also comprises device control module, and described device control module embeds for controlling the equipment that playback terminal is installed, and described equipment is selected from and comprises socket, electric light in interior plurality of devices.
Wherein, described system also comprises one or more intelligent distant control equipment, and described remote control equipment is controlled playback terminal.
Wherein, described playback terminal comprises infrared transceiver module.
Wherein, described playback terminal comprises power amplifier module and loudspeaker.
Wherein, described source of sound server optionally comprises that playback terminal is for realizing the module of broadcasting.
Wherein, described playback terminal optionally comprises that source of sound server is for realizing the module of access service function.
Wherein, described source of sound server and described playback terminal are arranged on the diverse location in place.
Wherein, described source of sound server is located at parlor, and described playback terminal is located at parlor, toilet, kitchen and/or bedroom.
Wherein, described source of sound server is located at control room, and described playback terminal is located at office, resident house and/or workshop.
Beneficial effect of the present invention is:
The present invention integrates equipment power supply, devices communicating, and the music that oneself like is play in the place that user can arrive at any one electric wire of family, can be external also can be built-in, solved the wiring difficult problem that traditional redundancy is numerous and diverse; Meanwhile, also can realize that light is controlled, the function of access and speech talkback mutually between each terminal.
System of the present invention adopts electric force carrier transmission, what transmit is audio data file, data are by TCP mode transmitting, meeting autonomous retransmission after loss, guarantee that audio data file accurately passes to opposite end, than traditional analog signal transmission mode, owing to not there is not the problem of when transmission signal attenuation distortion, play quality is high.
Source of sound server of the present invention and playback terminal size are little, save space, and conveniently connect and be embedded into other power equipment; And reduce costs.
Remote control equipment circuit of the present invention is simple, saves a pair of infrared receiving/transmission chip and the attached device of periphery thereof, reduces cost.
accompanying drawing explanation
Fig. 1 is the system connection diagram of the embodiment of the present invention.
Fig. 2 is the source of sound server principle schematic of the embodiment of the present invention.
Fig. 3 is the room playback terminal principle schematic of the embodiment of the present invention.
Fig. 4 is ACDC module and the connected mode of high-speed power module when electric power line end crosses of the embodiment of the present invention
Fig. 5 is the ACDC of the embodiment of the present invention.
Fig. 6 is the intelligent distant control terminal principle schematic of the embodiment of the present invention.
Fig. 7 is the software systems hierarchical structure figure of the embodiment of the present invention.
Fig. 8 is the software flow pattern that the UART of the embodiment of the present invention receives infrared data.
embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail, so that object of the present invention, technical scheme and effect are clearer, clear and definite.Specific embodiment described herein only, for explaining the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of audio frequency remote access and Play System based on power line, system is utilized existing power line, and collecting system is powered and is in communication in one.This system comprises power line, source of sound server, a plurality of rooms playback terminal, a plurality of intelligent distant control equipment.
Power line comprises a zero line and a live wire.Source of sound server and room playback terminal are to be all connected on two lines of power line by two-pin plug, and thus, playback terminal can be connected and communicate with source of sound server by power line.Described remote control equipment is controlled playback terminal.
As shown in Figure 2, source of sound server comprises ACDC power module, central processing module, memory module, high-speed power carrier module, interactive module.As shown in Figure 2, wherein ACDC power module is responsible for alternating current to change into direct current to each module connected mode, offers other several modules and uses; Central processing module is the core of source of sound server, be responsible for the work of the whole source of sound server of scheduling, memory module, high-speed power carrier module and interactive module are all its accessory module, memory module is for depositing the memory device of audio files, high-speed power carrier module be responsible for resolving data on power line or data coupling to power line, interactive module is used for accepting subscriber control information and shows source of sound server state information; Described source of sound server responds the request of described playback terminal, sends voice data and accepts voice data to playback terminal or from source of sound server.
The ACDC power module of source of sound server adopts flyback power supply switching circuit, switching circuit structure as shown in Figure 5, input 85V-265V alternating current, standard input 220V exchanges, by rectifier bridge input rectifying, through high frequency transformer transformation, then through output High frequency filter, become direct current, auxiliary feedback circuit reaches DC stabilization output.High frequency transformer is established a primary input terminal and a secondary output end, realize circuit single channel output direct current 11.4V, alternating current is changed rear single channel output direct current 11.4V by its circuit of high frequency transformer device of power module by ACDC, by 11.4V, be depressured to 3.3V to whole circuit supply, gross output 5W again.The isolation feedback circuit that ACDC module adopts benchmark pressurizer and isolation photoelectrical coupler to form, guarantees the stable output of 11.4V by stable benchmark output.
?the central processing module of source of sound server adopts Cortex-M3 arm processor to process the data of whole circuit, controls other module work.
The memory module of source of sound server is to deposit the module of audio file, such as being TF card, USB flash disk etc.Central processing module utilizes central processing element peripheral interface to go to read memory module and obtains voice data.Central processing module can also be connected to external ethernet by the RJ45 mouth of expansion, obtains and specifies audio file in network address.
The high-speed power carrier module of source of sound server is comprised of AFE (analog front end) modem chip and digital back-end process chip.When data receiver, AFE (analog front end) modem chip is responsible for data-signal demodulation from power line to be out then delivered to the processing of digital back-end chip, finally by MII mouth, sends to central processing module to resolve; When data send, CPU sends to digital back-end chip to process by MII mouth data, then passes to analog front-end chip and is modulated on power line.The modulation /demodulation of data-signal is transformer coupled to power line by power line carrier.
?the digital back-end chip of the process chip of central processing module and high-speed power carrier module is directly connected by MII interface, and central processing module is operated in MII MAC pattern, and high-speed power carrier module is operated in MII PHY pattern.This mode of operation is compared with the RJ45 connected mode of conventional electric power cat, has saved two cover PHY, two cover network transformers and two RJ45 mouths and the attached device of periphery.
?the high-speed power carrier module of source of sound server and ACDC power module cross at the end of equipment, and annexation as shown in Figure 4.The HF noise signal producing during the work of ACDC module is coupled on power line, data-signal stack with the transmission of high-speed power carrier module, directly affect the accuracy of transfer of data, at power input, for preventing surge, damage device simultaneously, need to connect safety electric capacity, the capacitive of this electric capacity can cause being coupled to the signal of communication distortion of power line, bring whole transmission line bandwidth to decline, so pass through isolation inductance L 1 in two modules of end that cross, L2 isolates, on the zero line of signal end and power end and live wire, respectively add a 10uH to the inductance of 100uH, isolate out noise and the impact of safety electric capacity on data on power line that ACDC module produces.
?the interactive module of source of sound server adopts eight key capacitance touch chips.Described interactive module can also comprise touch key-press and LCM LCDs, to facilitate user directly to source of sound server controls rather than control by remote control equipment.
?as shown in Figure 3, playback terminal comprises ACDC power module, central processing module, high-speed power carrier module, audio coding decoding module, infrared transceiver module, audio frequency input module, power amplifier module and loudspeaker, also can optionally comprise device control module.ACDC module wherein, central processing module, high-speed power carrier module function and occupation mode unisonance source server are consistent, audio coding decoding module, device control module, infrared transceiver module is also the accessory module of central processing module, audio coding decoding module is mainly responsible for the Code And Decode of voice data, it also has two accessory module: power amplifier module and audio frequency input, power amplifier module is responsible for the voice signal after audio decoder to amplify and drive loudspeaker to play, audio frequency input module can external microphone, the voice signal of intercommunication enters audio coding decoding module to carry out coding transmission to the other end and can output to source of sound server preserving.Device control module can be controlled the equipment of embedding playback terminal as the power supply of socket, light fixture etc.
?the ACDC power module of playback terminal adopts flyback power supply switching circuit, operation principle is the same with server end ACDC module, different is that high frequency transformer is established a primary input terminal and two secondary output ends, realize circuit doubleway output direct current 11.4V and 3.3V, gross output 12W, isolation feedback circuit is made as 3.3V mono-tunnel, guarantee the stable output of 3.3V, 11.4V mono-tunnel is to follow output, its actual output voltage is along with load variations fluctuation is very large, in this terminal, 11.4V mono-tunnel provides power supply for analog front-end chip and power amplifier chips, difference along with mode of operation, load variations will be very large.For guaranteeing stable output, at each reserved nH level inductance of transformer secondary output output, for adjusting secondary leakage inductance, reach the object that reduces 11.4V output error.
?the central processing module of playback terminal also adopts Cortex-M3 arm processor to process the data of whole circuit, controls other module work.
The audio coding decoding module of playback terminal is connected with central processing module by SPI interface, the main Code And Decode of being responsible for voice data, can the decode audio file of the forms such as MP3, WAV, it also has two accessory module audio coding decoding module: power amplifier module and audio frequency input, power amplifier module is responsible for the voice signal after audio decoder to amplify and drive loudspeaker to play, this power amplifier can drive the loudspeaker in 4,8 Europe, more than power 6W.Audio frequency input module can external microphone, and the voice signal of intercommunication enters audio coding decoding module to carry out coding transmission to the other end and can output to source of sound server preserving.
?the lighting control module that selectivity comprises is when playback terminal is connected with lamp, for controlling light.It adopts solid-state relay, and the inner controllable silicon that adopts of this solid-state relay switches with electronics, during work, can not produce electric spark, long service life.
Infrared transceiver module utilizes central processing element simulation to realize, and UART_RX receives infrared data, and baud rate is that 9600, UART_TX sends infrared data, and baud rate is 115200.
As shown in Figure 6, intelligent distant control equipment is the auxiliary equipment of controlling room playback terminal, and Main Function is for man-machine interaction, for sending control command and the information that displays the play.It is mainly comprised of MCU processing module, LCD MODULE, infrared transceiver module.MCU selects AVR Mega16, and infrared receiving/transmission is realized by MCU UART simulation, and UART_RX receives infrared data, baud rate is 9600, UART_TX sends infrared data, and baud rate is 115200, receives broadcast information rear drive LCD MODULE LCM12864 and shows.
As shown in Figure 7, the audio frequency remote access and the Play System that the present invention is based on power line adopt RT-Thread RTOS exploitation, utilize the file system of this system and ICP/IP protocol stack to complete reading of file and transfer function.
This operating system comprises: the bottom hardware driver module that is used for driving bottom hardware; The plate level support package relevant with circuit board with CPU; Cover the Realtime Operating System Nucleus module of full preemptive type; With the irrelevant upper application module of bottom specific implementation.Bottom hardware comprises the usual hardware modules such as CPU, SRAM, UART, and plate level support package relates to the software-driven of different hardware, and kernel comprises the processing such as device drives, Clock management, thread communication, management of process.Upper application module comprises ICP/IP protocol stack and multiwindow multithreading graphic user interface, source of sound server program module, playback terminal program module.
?wherein, source of sound server program module is mainframe program module, is to read audio file data from the TF card of FAT file system, and the MII interface by STM32F107 transfers data to AR7400, sends to the slave of addressing.This mainframe program module is set up UDP server, by UDP mode, audio file data is transferred to slave.
?the main design thought of source of sound server program module is as follows:
1. initialization files system and ICP/IP protocol stack.
2. use UDP mode to set up UDP server, for each client playing terminal, set up a server thread.
3. search for all audio files under TF card, USB flash disk audio frequency catalogue, and numbering and log file name.
4. the command interaction agreement of initialization and client playing terminal.
5. wait for that client's client playing terminal sends the voice data request of obtaining.
Playback terminal program module is slave program module, and it sets up the client computer of UDP, controls to main frame and sends request, thereby obtain the audio file data that main frame transmission comes according to user's remote control simultaneously.Slave receives after audio file data, and buffer memory one bag data, are then sent to audio decoder chip by SPI interface, by decoding chip, recover audio frequency.
The main design thought of room playback terminal is as follows:
1. initialization ICP/IP protocol stack.
2. use UDP mode to set up UDP client computer, for server, set up a client process.
3. initialization audio coding decoding chip VS1003.
4. the command interaction agreement of initialization and server end.
5. wait for user's operational order.
Main frame and slave are all supported command line configuration mode, can operate by the debug serial port on plate, and some major functions all have the support of order line, convenient debugging.
Itself all carries UART mouth the central processing element of playback terminal of the present invention and intelligent distant control, can realize the encoding and decoding of infrared data.While sending data, with UART TX, simulate 38KHz carrier wave, serial ports is made as to 115200 baud rate, data bit is 7 bit, no parity check position and 1 stop bit, be 9 bit altogether, then send continuously numerical value 0x5B and just can obtain 38kHz, the carrier wave that duty ratio is 2/3.With a PNP triode, drive, that delivers to infrared light emitting diode be exactly duty ratio be 1/3 carrier signal.After sending data, baud rate is made into 9600, data bit changes 8bit into, utilize UART RX to interrupt receiving data, receive the software handling process of data as shown in Figure 8, in receiving a complete infrared remote-controlled signal process, UART RX can ceaselessly enter interruption, whole process continues about 108ms, and can sample 33 above data, so the opening timing of having no progeny in receiving first device, timing 110ms, within the time of so looking, if can receive 5 above digital proofs, this is an effective infrared waveform rather than interference.If effectively just go to process all data that receive in 110ms, if data bit 0 representative has received a remote-control data that bit is 1, if data bit is not 0, representative receives the data that a bit is 0.Then these bit bit combinations being got up is exactly the infrared decoding value receiving.
?audio frequency remote access and Play System working method based on power line of the present invention is substantially as follows: source of sound server is used for depositing a large amount of audio files, audio coding decoding is operated in room playback terminal to carry out, user checks the source of sound list of source of sound server by intelligent distant control terminal, select to play.For guaranteeing to obtain the effectively correct of data, whole system communication adopts ICP/IP protocol, audio server end is set up UDP service, for all online room playback terminals, set up server processes service is provided, the data transport service of the corresponding playback terminal of each process, after room playback terminal identification user's remote control request, from source of sound server, obtain corresponding sound source data, will receive decoding data and drive built-in loudspeaker to play through power amplifier module.
?should be understood that, those skilled in the art utilize the alternative and modification that ordinary skill knowledge and/or other prior art are made the present invention not depart from the present invention's design.
Claims (10)
1. audio frequency remote access and a Play System, this system comprises a source of sound server, one or more playback terminal; Described source of sound server is used for depositing audio files, and it comprises power module, central processing module, memory module, high-speed power carrier module, interactive module; Described playback terminal is used for playing audio files, and it comprises power module, central processing module, high-speed power carrier module, audio coding decoding module, power amplifier module and loudspeaker; Described playback terminal obtains the sound source data broadcasting of decoding by active request from source of sound server; Described power module is ACDC power module; Described source of sound server and described playback terminal transmit data by power line; Described source of sound server and described playback terminal are connected respectively on the zero line and live wire of power line by two-pin plug separately, and described electric power is realized the transmission of voice data; Described playback terminal also comprises device control module, and described device control module embeds for controlling the equipment that playback terminal is installed, and described equipment is selected from and comprises socket, electric light in interior plurality of devices; Described system also comprises one or more intelligent distant control equipment, and described remote control equipment is controlled playback terminal.
2. audio frequency remote access according to claim 1 and Play System, is characterized in that, described playback terminal also comprises audio frequency input module, and described audio frequency input module is inputted sound source data from outside.
3. audio frequency remote access according to claim 2 and Play System, is characterized in that, described playback terminal is encoded external voice input output to source of sound server and preserves.
4. according to arbitrary described audio frequency remote access and Play System in claim 1-3, it is characterized in that, power line is that the place that described system is installed possesses.
5. according to arbitrary described audio frequency remote access and Play System in claim 1-3, it is characterized in that, described power line is arranged together with described system.
6. according to arbitrary described audio frequency remote access and Play System in claim 1-3, it is characterized in that, described source of sound server optionally comprises that playback terminal is for realizing the module of broadcasting.
7. according to arbitrary described audio frequency remote access and Play System in claim 1-3, it is characterized in that, described playback terminal optionally comprises that source of sound server is for realizing the module of access service function.
8. according to arbitrary described audio frequency remote access and Play System in claim 1-3, it is characterized in that, described source of sound server and described playback terminal are arranged on the diverse location in place.
9. audio frequency remote access according to claim 8 and Play System, is characterized in that, described source of sound server is located at parlor, and described playback terminal is located at parlor, toilet, kitchen and/or bedroom.
10. audio frequency remote access according to claim 8 and Play System, is characterized in that, described source of sound server is located at control room, and described playback terminal is located at office, resident house and/or workshop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320010056.6U CN203466810U (en) | 2013-01-09 | 2013-01-09 | Audio remote access and playing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320010056.6U CN203466810U (en) | 2013-01-09 | 2013-01-09 | Audio remote access and playing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203466810U true CN203466810U (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320010056.6U Expired - Lifetime CN203466810U (en) | 2013-01-09 | 2013-01-09 | Audio remote access and playing system |
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|---|---|
| CN (1) | CN203466810U (en) |
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2013
- 2013-01-09 CN CN201320010056.6U patent/CN203466810U/en not_active Expired - Lifetime
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