CN203232291U - Player terminal applied in audio frequency remote access and play system - Google Patents
Player terminal applied in audio frequency remote access and play system Download PDFInfo
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- CN203232291U CN203232291U CN 201320010053 CN201320010053U CN203232291U CN 203232291 U CN203232291 U CN 203232291U CN 201320010053 CN201320010053 CN 201320010053 CN 201320010053 U CN201320010053 U CN 201320010053U CN 203232291 U CN203232291 U CN 203232291U
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Abstract
A player terminal applied in an audio frequency remote access and play system comprises an ACDC power module, a central processing module, a high speed electric power carrier wave module, an audio frequency coding and decoding module and an interaction module; the high speed electric power carrier wave module is used for analyzing data on a power line or coupling the data on the power line; the audio frequency coding and decoding module is used for coding and decoding the audio frequency data; the interaction module is used for receiving user control information; and the player terminal receives audio frequency data from a sound source server. The player terminal employs existing power line in a place to install the system, no rewiring is needed, so installation efficiency is improved, and user cost is saved.
Description
Technical field
The present invention relates to a kind ofly by power line transmission audio frequency signal and system that access and the broadcast of sound signal are controlled, and relate in particular to a kind of playback terminal that is applied to audio frequency remote access and Play System.
Background technology
Along with the raising of life, people become an indispensable part in the life gradually for the hobby of music, at home, in the hotel, in other public places, not only wish to hear music whenever and wherever possible, also wish to enjoy the music of oneself liking easily.
At present the building audio system has and adopts the tone frequency channel wire connectivity scenario, and the less radio-frequency scheme of adopting is also arranged.They have defective separately: adopt the tone frequency channel wire connectivity scenario when actual arrangement, will draw very long line again, also want external attached power supply adaptor, in case shift one's position, rearrange again, and very inconvenient.There is radio-frequency radiation on the one hand in less radio-frequency scheme based on RF-wise such as WIFI, and ability through walls is more weak on the other hand, can not cover each corner.
In field of signal transmissions, favourablely carry out the technology of data transmission, for example CN101707571A with line of electric force.Using the advantage of line of electric force is the problem that can solve backguy again, and it does not have the delay in the wireless communication technology, the covering of no dead angle, and no radio-frequency radiation, etc.But this technology also is not used in the building audio transmission system at present, so fail to solve the problem of rewiring in the audio system.Reason is the technical matters that needs to solve each side such as stored program controlled, method and equipment.
Summary of the invention
The present invention is directed to the technical matters that exists in the above-mentioned background technology, propose a kind of playback terminal that is applied to audio frequency remote access and Play System.
The technical matters that the present invention solves comprises: need the place of playing audio-fequency data at dwelling house or office building etc., take full advantage of existing line of electric force and come the transmission of audio signal, and realize remote access and the broadcast of audio frequency.
Technical scheme of the present invention is as follows:
A kind of playback terminal that is applied to audio frequency remote access and Play System comprises ACDC power module, central processing module, high-speed power carrier module, audio coding decoding module, interactive module; Wherein, the ACDC power module is responsible for alternating current is changed into direct current, offers other several modules and uses; Central processing module is the core of playback terminal, is responsible for the work of the whole playback terminal of scheduling, and high-speed power carrier module, audio coding decoding module and interactive module all are its accessory module; The high-speed power carrier module is responsible for resolving the data on the line of electric force or data is coupled on the line of electric force, and the audio coding decoding module is carried out Code And Decode to voice data, and interactive module is used for accepting subscriber control information; Described playback terminal is accepted voice data from the source of sound server.
Wherein, described playback terminal also can send voice data to the source of sound server of described system.
Wherein, described interactive module can also show the source of sound server state information.
Wherein, also comprise power amplifier module and voice input device.
Wherein, power amplifier module is responsible for the voice signal behind the audio decoder is amplified the broadcast of driving loudspeaker.
Wherein, described power amplifier can drive the loudspeaker in 4,8 Europe, more than the power 6W.
Wherein, the audio frequency load module can external microphone, and the voice signal of intercommunication enters the audio coding decoding module to carry out coding transmission and preserve to the other end and the source of sound server that can output to described system.
Wherein, described playback terminal also comprises device control module, and described device control module can be controlled the equipment that embeds playback terminal.
Wherein, described equipment comprises socket, light fixture.
Wherein, the ACDC power module adopts the flyback power supply on-off circuit.
Wherein, also comprise infrared transceiver module.
Wherein, the high-frequency transformer of power module is established a primary input terminal and two secondary output ends, realizes circuit two-way output direct current 11.4V and 3.3V, gross output 12W.
Wherein, isolation feedback circuit is made as 3.3V one tunnel, guarantees the stable output of 3.3V, and 11.4V one tunnel follows output terminal, and its actual output voltage is along with load variations fluctuates, and 11.4V one tunnel provides power supply for analog front-end chip and power amplifier chip in this terminal.
Wherein, respectively reserve a nH level inductance at described transformer secondary output output terminal, be used for adjusting secondary leakage inductance, reach the purpose that reduces 11.4V output terminal error.
Wherein, the audio coding decoding module of playback terminal links to each other with central processing module by the SPI interface.
Wherein, the audio file that can decode of audio coding decoding module comprises the multiple form that comprises MP3, WAV.
Wherein, also comprise intelligent distant control equipment, described intelligent distant control equipment is used for man-machine interaction, is used for sending control command and the information that displays the play.
Wherein, described intelligent distant control equipment mainly is made up of MCU processing module, LCD MODULE, infrared transceiver module.
Wherein, the infrared transceiver module of described intelligent distant control equipment realizes that by MCU UART simulation 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.
Wherein, described infrared transceiver module utilizes the central processing element simulation to realize.
Wherein, the central processing element itself of playback terminal and intelligent distant control equipment all carries the UART mouth, can realize the encoding and decoding of infrared data.
Wherein, also comprise lighting control module, when playback terminal is connected with lamp, be used for control light.
Wherein, described lighting control module adopts solid-state relay, and the inner controllable silicon that adopts of this solid-state relay switches with electronics, can not produce electric spark during work.
A kind of method of transmission data of intelligent distant control equipment of playback terminal, it comprises the steps:
Simulate the 38KHz carrier wave with UART TX when sending data, serial ports is made as 115200 baud rate, data bit is 7 bit, and no parity check position and 1 stop bit are 9 bit altogether;
Send numerical value 0x5B continuously and just can obtain 38kHz, dutycycle is 2/3 carrier wave;
Drive with a PNP triode, that delivers to infrared light emitting diode be exactly dutycycle be 1/3 carrier signal;
After sending data baud rate is made into 9600, data bit changes 8bit into, utilizes UART RX to interrupt receiving data.
A kind of method of accepting data of playback terminal, it comprises the steps:
Playback terminal is received in the process of a complete infrared remote-controlled signal, UART RX can not stop enters interruption, whole process continues about 108ms, and can sample data more than 33, so the opening timing of in receiving first, having no progeny device, timing 110ms, in the time of so looking, this is an effective infrared waveform rather than interference if can receive 5 above digital proofs; If effectively just go to handle all data that receive in the 110ms, be 1 remote-control data if data bit 0 representative has received a bit, if data bit is not 0 then representative receives a bit is 0 data; Then these bit bit patterns being got up is exactly the infrared decode value that receives.
Beneficial effect of the present invention is:
Adopt central source of sound server of the present invention, power devices, devices communicating can be integrated, the user can play the music of oneself liking in the place that any one electric wire of family arrives, can be external also can be built-in, solved the numerous and diverse wiring difficult problem of traditional redundancy; Simultaneously, also can realize between light control, each terminal the function of visit mutually and speech talkback.
System of the present invention adopts the power carrier transmission, what transmit is audio data file, data are reliably transmitted by the TCP mode, can retransmit automatically after losing, guarantee that audio data file accurately passes to the opposite end, than traditional analog signal transmission mode, owing to do not have the problem of signal attenuation distortion when transmitting, play quality height.
Source of sound server of the present invention and playback terminal size are little, save the space, and conveniently connect and be embedded into other power equipment; And reduce cost.
Remote control equipment circuit of the present invention is simple, saves a pair of infrared receiving/transmission chip and peripheral attached device thereof, reduces cost.
Description of drawings
Fig. 1 is system's connection diagram of the embodiment of the invention.
Fig. 2 is the source of sound server principle schematic of the embodiment of the invention.
Fig. 3 is the room playback terminal principle schematic of the embodiment of the invention.
Fig. 4 is ACDC module and the connected mode of high-speed power module when the electric power line end crosses of the embodiment of the invention
Fig. 5 is the ACDC of the embodiment of the invention.
Fig. 6 is the intelligent distant control terminal principle schematic of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is described in detail, so that it is purpose of the present invention, technical scheme and effect are clearer, clear and definite.Specific embodiment described herein only is used for explaining the present invention, and is not used in restriction the present invention.
As shown in Figure 1, a kind of audio frequency remote access and Play System based on line of electric force, system utilizes existing line of electric force, and collecting system is powered and is in communication in one.This system comprises line of electric force, source of sound server, a plurality of rooms playback terminal, a plurality of intelligent distant control equipment.
Line of electric force comprises a zero line and a live wire.Source of sound server and room playback terminal all are to be connected on two lines of line of electric force by two-pin plug, and thus, playback terminal can be connected with the source of sound server by line of electric force and communicate.Described remote control equipment is controlled playback terminal.
As shown in Figure 2, the source of sound server comprises ACDC power module, central processing module, memory module, high-speed power carrier module, interactive module.Each module connected mode as shown in Figure 2, wherein the ACDC power module is responsible for alternating current is changed into direct current, 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 all are its accessory module, memory module is be used to the memory device of depositing audio files, the high-speed power carrier module is responsible for resolving the data on the line of electric force or data is coupled on the line of electric force, and interactive module is used for accepting subscriber control information and showing the 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 the source of sound server.
The ACDC power module of source of sound server adopts the flyback power supply on-off circuit, the on-off circuit structure as shown in Figure 5, input 85V-265V alternating current, standard input 220V exchanges, by the rectifier bridge input rectifying, through the high-frequency transformer transformation, again through the 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 exported direct current 11.4V by its circuit of high-frequency transformer device of power module by ACDC conversion back single channel, be depressured to 3.3V by 11.4V again and power to entire circuit, gross output 5W.The ACDC module adopts the benchmark voltage stabilizer and isolates the isolation feedback circuit that photoelectrical coupler is formed, and guarantees the stable output of 11.4V by stable benchmark output.
The central processing module of source of sound server adopts the Cortex-M3 arm processor to handle the data of entire circuit, controls other module work.
The memory module of source of sound server is to deposit the module of audio file, for example can be TF card, USB flash disk etc.Central processing module utilizes the 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 on the network address.
The high-speed power carrier module of source of sound server is made up of AFE (analog front end) modem chip and digital back-end process chip.The AFE (analog front end) modem chip is responsible for that data-signal demodulation from the line of electric force is come out to be delivered to then the digital back-end chip and is handled when data receive, and sends to central processing module by the MII mouth at last and resolves; When data sent, CPU (central processing unit) sent to the digital back-end chip with data by the MII mouth and handles, and passes to analog front-end chip then and is modulated on the line of electric force.The modulation of data-signal is transformer coupled to line of electric force by power line carrier.
The digital back-end chip of the process chip of central processing module and high-speed power carrier module directly is connected by the MII interface, and central processing module is operated in MII MAC pattern, and the 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 transformer and two RJ45 mouths and peripheral attached devices.
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 that produces during the work of ACDC module is coupled on the line of electric force, superpose with high-speed power carrier module data signals transmitted, directly influence the accuracy of data transmission, damage device at power input for preventing surge simultaneously, need connect safety electric capacity, the capacitive of this electric capacity can cause being coupled to the signal of communication distortion of line of electric force, bring whole transmission line bandwidth to descend, so terminal two modules pass through to isolate inductance L 1 crossing, L2 isolates, namely 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 that the ACDC module produces and safety electric capacity to the influence of data on the line of electric force.
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, directly controls to the source of sound server controls rather than by remote control equipment to make things convenient for the user.
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 load 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 use-pattern unisonance source server unanimity, the audio coding decoding module, device control module, infrared transceiver module also is the accessory module of central processing module, the audio coding decoding module mainly is 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 that the voice signal behind the audio decoder is amplified the driving loudspeaker and is play, the audio frequency load module can external microphone, and the voice signal of intercommunication enters the audio coding decoding module to carry out coding transmission to the other end and can output to the source of sound server preserving.Device control module can be controlled the equipment of embedding playback terminal such as the power supply of socket, light fixture etc.
The ACDC power module of playback terminal adopts the flyback power supply on-off circuit, principle of work 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 two-way output direct current 11.4V and 3.3V, gross output 12W, isolation feedback circuit is made as 3.3V one tunnel, guarantee the stable output of 3.3V, 11.4V one the tunnel is to follow output terminal, its actual output voltage is along with the load variations fluctuation is very big, 11.4V one tunnel provides power supply for analog front-end chip and power amplifier chip in this terminal, and along with the difference of mode of operation, load variations will be very big.Stable for guaranteeing output, respectively reserve a nH level inductance at the transformer secondary output output terminal, be used for adjusting secondary leakage inductance, reach the purpose that reduces 11.4V output terminal error.
The central processing module of playback terminal also adopts the Cortex-M3 arm processor to handle the data of entire circuit, controls other module work.
The audio coding decoding module of playback terminal links to each other with central processing module by the SPI interface, the main Code And Decode of being responsible for voice data, can the decode audio file of forms such as MP3, WAV, it also has two accessory module the audio coding decoding module: power amplifier module and audio frequency input, power amplifier module is responsible for that the voice signal behind the audio decoder is amplified the driving loudspeaker and is play, this power amplifier can drive the loudspeaker in 4,8 Europe, more than the power 6W.The audio frequency load module can external microphone, and the voice signal of intercommunication enters the audio coding decoding module to carry out coding transmission to the other end and can output to the source of sound server preserving.
The lighting control module that selectivity comprises is when playback terminal is connected with lamp, is used for control light.It adopts solid-state relay, and the inner controllable silicon that adopts of this solid-state relay switches with electronics, can not produce electric spark, long service life during work.
Infrared transceiver module utilizes the central processing element simulation to realize that 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 utility appliance of control room playback terminal, and main effect is for man-machine interaction, is used for sending control command and the information that displays the play.It mainly is made up of MCU processing module, LCD MODULE, infrared transceiver module.MCU selects AVR Mega16 for use, and infrared receiving/transmission realizes that by MCU UART simulation 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.
Audio frequency remote access and Play System working method based on line of electric force of the present invention is as follows substantially: the source of sound server is used for depositing a large amount of audio files, audio coding decoding is operated in the room playback terminal to carry out, the user checks the source of sound tabulation of source of sound server by the intelligent distant control terminal, selects to play.For guaranteeing to obtain the effectively correct of data, ICP/IP protocol is adopted in total system communication, the audio server end is set up the UDP service, set up server processes for all online room playback terminals service is provided, the data transport service of the corresponding playback terminal of each process, after room playback terminal identification user's the remote control request, obtain corresponding sound source data from the source of sound server, data are decoded and drive built-in loudspeaker through power amplifier module plays with receiving.
Should be understood that those skilled in the art utilize ordinary skill knowledge and/or other prior art that the alternative and modification that the present invention makes is not broken away from the present invention's design.
Claims (20)
1. a playback terminal that is applied to audio frequency remote access and Play System comprises ACDC power module, central processing module, high-speed power carrier module, audio coding decoding module, interactive module; Wherein, the ACDC power module is responsible for alternating current is changed into direct current, offers other several modules and uses; Central processing module is the core of playback terminal, is responsible for the work of the whole playback terminal of scheduling, and high-speed power carrier module, audio coding decoding module and interactive module all are its accessory module; The high-speed power carrier module is responsible for resolving the data on the line of electric force or data is coupled on the line of electric force, and the audio coding decoding module is carried out Code And Decode to voice data, and interactive module is used for accepting subscriber control information; Described playback terminal is accepted voice data from the source of sound server.
2. playback terminal according to claim 1 is characterized in that, described playback terminal also can send voice data to the source of sound server of described system.
3. playback terminal according to claim 1 and 2 is characterized in that, described interactive module can also show the source of sound server state information.
4. playback terminal according to claim 1 and 2 is characterized in that, also comprises power amplifier module and voice input device.
5. playback terminal according to claim 4 is characterized in that, power amplifier module is responsible for that the voice signal behind the audio decoder is amplified the driving loudspeaker and is play.
6. playback terminal according to claim 4, it is characterized in that, the audio frequency load module can external microphone, and the voice signal of intercommunication enters the audio coding decoding module to carry out coding transmission and preserve to the other end and the source of sound server that can output to described system.
7. according to arbitrary described playback terminal among claim 1,2, the 5-6, it is characterized in that described playback terminal also comprises device control module, described device control module can be controlled the equipment that embeds playback terminal.
8. playback terminal according to claim 7 is characterized in that, described equipment comprises socket, light fixture.
9. according to arbitrary described playback terminal among claim 1,2, the 5-6, it is characterized in that the ACDC power module adopts the flyback power supply on-off circuit.
10. according to arbitrary described playback terminal among claim 1,2, the 5-6, it is characterized in that, also comprise infrared transceiver module.
11., it is characterized in that the high-frequency transformer of power module is established a primary input terminal and two secondary output ends according to arbitrary described playback terminal among claim 1,2, the 5-6, realize circuit two-way output direct current 11.4V and 3.3V, gross output 12W.
12. playback terminal according to claim 11, it is characterized in that, isolation feedback circuit is made as 3.3V one tunnel, guarantee the stable output of 3.3V, 11.4V one the tunnel is to follow output terminal, its actual output voltage is along with load variations fluctuates, and 11.4V one tunnel provides power supply for analog front-end chip and power amplifier chip in this terminal.
13., it is characterized in that the audio coding decoding module of playback terminal links to each other with central processing module by the SPI interface according to arbitrary described playback terminal among claim 1,2, the 5-6.
14. playback terminal according to claim 13 is characterized in that, the audio file that the audio coding decoding module can be decoded comprises the multiple form that comprises MP3, WAV.
15. playback terminal according to claim 1 is characterized in that, also comprises intelligent distant control equipment, described intelligent distant control equipment is used for man-machine interaction, is used for sending control command and the information that displays the play.
16. playback terminal according to claim 15 is characterized in that, described intelligent distant control equipment mainly is made up of MCU processing module, LCD MODULE, infrared transceiver module.
17. playback terminal according to claim 16, it is characterized in that, the infrared transceiver module of described intelligent distant control equipment is realized by MCU UART simulation, 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.
18., it is characterized in that described infrared transceiver module utilizes the central processing element simulation to realize according to claim 16 or 17 described playback terminals.
19., it is characterized in that the central processing element itself of playback terminal and intelligent distant control equipment all carries the UART mouth, can realize the encoding and decoding of infrared data according to claim 15 or 16 described playback terminals.
20. playback terminal according to claim 1 is characterized in that, also comprises lighting control module, when playback terminal is connected with lamp, is used for control light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201320010053 CN203232291U (en) | 2013-01-09 | 2013-01-09 | Player terminal applied in audio frequency remote access and play system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320010053 CN203232291U (en) | 2013-01-09 | 2013-01-09 | Player terminal applied in audio frequency remote access and play system |
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| CN203232291U true CN203232291U (en) | 2013-10-09 |
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| CN 201320010053 Expired - Lifetime CN203232291U (en) | 2013-01-09 | 2013-01-09 | Player terminal applied in audio frequency remote access and play system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197616A (en) * | 2013-01-09 | 2013-07-10 | 北京卓越信通电子股份有限公司 | Player terminal applied to audio remote access and play system |
| WO2019136962A1 (en) * | 2018-01-11 | 2019-07-18 | 歌尔股份有限公司 | Audio conversion apparatus and multi-sound system |
| CN112185188A (en) * | 2019-07-04 | 2021-01-05 | 武汉市乔益师电子有限公司 | Frequency modulation hearing oral teaching system |
-
2013
- 2013-01-09 CN CN 201320010053 patent/CN203232291U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197616A (en) * | 2013-01-09 | 2013-07-10 | 北京卓越信通电子股份有限公司 | Player terminal applied to audio remote access and play system |
| WO2019136962A1 (en) * | 2018-01-11 | 2019-07-18 | 歌尔股份有限公司 | Audio conversion apparatus and multi-sound system |
| CN112185188A (en) * | 2019-07-04 | 2021-01-05 | 武汉市乔益师电子有限公司 | Frequency modulation hearing oral teaching system |
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Granted publication date: 20131009 |