CN203327023U - Wireless broadcasting system - Google Patents
Wireless broadcasting system Download PDFInfo
- Publication number
- CN203327023U CN203327023U CN2013203604733U CN201320360473U CN203327023U CN 203327023 U CN203327023 U CN 203327023U CN 2013203604733 U CN2013203604733 U CN 2013203604733U CN 201320360473 U CN201320360473 U CN 201320360473U CN 203327023 U CN203327023 U CN 203327023U
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Abstract
The utility model discloses a wireless broadcasting system. The wireless broadcasting system includes a host, a wireless transmission module, a local power source, at least one terminal player and at least one terminal power source. During utilization, the host is used to amplify and then broadcast received audio data locally on one hand, and send the audio data to each terminal player via a ZigBee network through the wireless transmission module on the other hand, and after the audio data is received by the terminal player, the audio data is subjected to decoding, D/A conversion and amplification and then broadcasted. According to the utility model, wiring is not needed, so the maintenance is convenient; and compared with a wireless broadcasting system adopting the Bluetooth technology, the transmission distance is farther, and a plurality of terminals exist conveniently, so advantages of low cost and less power consumption can be realized.
Description
Technical field
The utility model relates to broadcast and audio amplifier field, relates in particular to a kind of wireless broadcast system.
Background technology
In recent years, fast development along with embedded system technology, network communications technology and electrical appliance industry, information technology is penetrated in the middle of people's life just gradually, Public Address system not only can provide background music and broadcast program for school, hotel, mall, harbour, airport, subway, can also doublely do urgent broadcast, link with fire protection alarm system.
The modes such as that existing broadcast system generally is divided into is wired, bluetooth, FM analog fm, FSK frequency-shift keying, these modes respectively have deficiency: adopt wired mode, wiring is complicated, be difficult for changing,? safeguard very difficult; Adopt Bluetooth technology, not only cost is high, power consumption is large, and transmission range is shorter, is inconvenient to grow apart from networking; FM analog fm utilization be analog signal, when around when the more approaching radio wave of frequency ratio is arranged, broadcast can produce obvious distortion; FSK frequency-shift keying technology is complex structure, and the use radio band needs to pay.
The utility model content
Technical problem to be solved in the utility model is the defect for background technology, and a kind of wireless broadcast system without wiring, low cost, low-power consumption and signal stabilization is provided.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of wireless broadcast system, comprise main frame, wireless transport module, local power supply, at least one terminal player and at least one terminal power supply, wherein wireless transport module is by several terminal node devices and a local node installation composition, each terminal player is connected with a terminal node device, main frame is connected with the local node device, terminal node device and local node device are based on the Zigbee protocol radio communication, main frame and local node device are electrically connected with local power supply respectively, each terminal power supply is electrically connected with a terminal node device and a terminal player respectively.
As the further prioritization scheme of the utility model, main frame comprises USB interface, usb circuit, local MCU, microphone interface, speech processing circuit, the A/D change-over circuit, audio coder, audio decoder, the D/A change-over circuit, power amplification circuit and loud speaker, wherein usb circuit one end is connected with USB interface, the other end is connected with local MCU, microphone interface, speech processing circuit, the A/D change-over circuit, audio coder, local MCU order successively is connected, local MCU, audio decoder, the D/A change-over circuit, power amplification circuit, loud speaker order successively is connected, local MCU is connected with the local node device in wireless transport module.
As the further prioritization scheme of the utility model, terminal player comprises terminal MCU, audio decoder, D/A change-over circuit, power amplifier and loud speaker, terminal MCU, audio decoder, D/A change-over circuit, power amplifier, loud speaker order successively are connected, and terminal MCU is connected with the terminal node device in wireless transport module.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
1. without wiring, easy to maintenance;
2. with the wireless broadcast system that adopts Bluetooth technology, compare, cost is lower, and power consumption is less, and transmission range is farther;
3. with the wireless broadcast system that adopts the FM frequency modulation technology, compare, signal is reliable, is difficult for distortion;
4. with the wireless broadcast system that adopts FSK frequency-shift keying technology, compare, simple in structure, cost is lower.
The accompanying drawing explanation
Fig. 1 is the wireless broadcast system structure chart;
Fig. 2 is local structure chart;
Fig. 3 is terminal structure figure.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
As shown in Figure 1, the utility model discloses a kind of without wiring, low-cost, the wireless broadcast system of low-power consumption and signal stabilization, comprise main frame, wireless transport module, local power supply, at least one terminal player and at least one terminal power supply, wherein wireless transport module is by several terminal node devices and a local node installation composition, each terminal player is connected with a terminal node device, main frame is connected with the local node device, terminal node device and local node device are based on the Zigbee protocol radio communication, main frame and local node device are electrically connected with local power supply respectively, each terminal power supply is electrically connected with a terminal node device and a terminal player respectively.
As shown in Figure 2, main frame comprises USB interface, usb circuit, local MCU, microphone interface, speech processing circuit, the A/D change-over circuit, audio coder, audio decoder, the D/A change-over circuit, power amplification circuit and loud speaker, wherein usb circuit one end is connected with USB interface, the other end is connected with local MCU, microphone interface, speech processing circuit, the A/D change-over circuit, audio coder, local MCU order successively is connected, local MCU, audio decoder, the D/A change-over circuit, power amplification circuit, loud speaker order successively is connected, local MCU is connected with the local node device in wireless transport module.
As shown in Figure 3, terminal player comprises terminal MCU, audio decoder, D/A change-over circuit, power amplifier and loud speaker, terminal MCU, audio decoder, D/A change-over circuit, power amplifier, loud speaker order successively are connected, and terminal MCU is connected with the terminal node device in wireless transport module.
The present embodiment adopts the MSP430 series monolithic of TI company as main frame MCU controller, adopt the usb circuit chip of CH376 chip as main frame, adopt the audio decoder of VS1003 chip as player, the ZigBee module of employing Shanghai Shun Zhou company or the CC2530 chip of American TI Company are as local node device and the terminal node device of wireless transport module.Wherein the local node device is made as telegon, is responsible for initiating, setting up ZigBee-network; The terminal node device is made as terminal, the ZigBee-network that adds telegon to set up.
MSP430 series monolithic and CC2530 chip are had outstanding performance aspect energy-conservation in low-power consumption, and ZigBee is the wireless communication technique of low-power consumption, and this not only makes the whole system power consumption extremely low, and makes system works more stable.
When the user uses the USB interface of the memory device insertion main frames such as USB flash disk, local MCU reads the digital audio-frequency data of corresponding format in the memory device such as USB flash disk by the USB common interface circuit, on the one hand, local MCU is sent to audio decoder decode by read digital audio-frequency data, then convert analog signal to through the D/A change-over circuit, and by the power amplification circuit amplifying signal, finally by loud speaker, play, on the other hand, local MCU sends to each terminal node device by read digital audio-frequency data through the ZigBee wireless network by the local node device of wireless transport module, the terminal node device sends the digital audio-frequency data received to terminal player, by terminal player, voice data is decoded, the D/A conversion, after amplifying, play.
When the user is connected microphone with the microphone interface of main frame, microphone typing speech simulation signal, send into main frame, carry out denoising through speech processing circuit, after amplification waits and processes, convert the speech simulation signal to digital audio and video signals by the A/D change-over circuit, and encode by audio coder, finally be sent to local MCU, after local MCU receives data, on the one hand, local MCU is sent to audio decoder decode by read digital audio-frequency data, then convert analog signal to through the D/A change-over circuit, and by the power amplification circuit amplifying signal, finally by loud speaker, play, on the other hand, local MCU sends to each terminal node device by read digital audio-frequency data through the ZigBee wireless network by the local node device of wireless transport module, the terminal node device sends the digital audio-frequency data received to terminal player, by terminal player, voice data is decoded, the D/A conversion, after amplifying, play.
The user also can be connected microphone with computer, computer is connected with main frame by the USB line simultaneously, microphone typing speech simulation signal transfers to computer, after computer is processed into the digital audio-frequency data of corresponding format by the speech simulation signal, be transferred to the local MCU of main frame by USB interface, after local MCU receives digital audio-frequency data, on the one hand, local MCU is sent to audio decoder decode by read digital audio-frequency data, then convert analog signal to through the D/A change-over circuit, and by the power amplification circuit amplifying signal, finally by loud speaker, play, on the other hand, local MCU sends to each terminal node device by read digital audio-frequency data through the ZigBee wireless network by the local node device of wireless transport module, the terminal node device sends the digital audio-frequency data received to terminal player, by terminal player, voice data is decoded, the D/A conversion, after amplifying, play.
Claims (3)
1. a wireless broadcast system, it is characterized in that comprising main frame, wireless transport module, local power supply, at least one terminal player and at least one terminal power supply, wherein wireless transport module is by several terminal node devices and a local node installation composition, each terminal player is connected with a terminal node device, main frame is connected with the local node device, terminal node device and local node device are based on the Zigbee protocol radio communication, main frame and local node device are electrically connected with local power supply respectively, each terminal power supply is electrically connected with a terminal node device and a terminal player respectively.
2. a kind of wireless broadcast system according to claim 1, it is characterized in that described main frame comprises USB interface, usb circuit, local MCU, microphone interface, speech processing circuit, the A/D change-over circuit, audio coder, audio decoder, the D/A change-over circuit, power amplification circuit and loud speaker, wherein usb circuit one end is connected with USB interface, the other end is connected with local MCU, microphone interface, speech processing circuit, the A/D change-over circuit, audio coder, local MCU order successively is connected, local MCU, audio decoder, the D/A change-over circuit, power amplification circuit, loud speaker order successively is connected, local MCU is connected with the local node device in wireless transport module.
3. a kind of wireless broadcast system according to claim 1, it is characterized in that described terminal player comprises terminal MCU, audio decoder, D/A change-over circuit, power amplifier and loud speaker, terminal MCU, audio decoder, D/A change-over circuit, power amplifier, loud speaker order successively are connected, and terminal MCU is connected with the terminal node device in wireless transport module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203604733U CN203327023U (en) | 2013-06-21 | 2013-06-21 | Wireless broadcasting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203604733U CN203327023U (en) | 2013-06-21 | 2013-06-21 | Wireless broadcasting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203327023U true CN203327023U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203604733U Expired - Fee Related CN203327023U (en) | 2013-06-21 | 2013-06-21 | Wireless broadcasting system |
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| Country | Link |
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| CN (1) | CN203327023U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312425A (en) * | 2013-06-21 | 2013-09-18 | 无锡商业职业技术学院 | Wireless broadcasting system |
| CN104092508A (en) * | 2014-06-19 | 2014-10-08 | 北京博恩科技贸易有限公司 | Intelligent broadcasting system |
-
2013
- 2013-06-21 CN CN2013203604733U patent/CN203327023U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312425A (en) * | 2013-06-21 | 2013-09-18 | 无锡商业职业技术学院 | Wireless broadcasting system |
| CN104092508A (en) * | 2014-06-19 | 2014-10-08 | 北京博恩科技贸易有限公司 | Intelligent broadcasting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140621 |
|
| EXPY | Termination of patent right or utility model |