CN202524505U - Audio and video frequency transmission system based on wireless network - Google Patents
Audio and video frequency transmission system based on wireless network Download PDFInfo
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- CN202524505U CN202524505U CN 201220174330 CN201220174330U CN202524505U CN 202524505 U CN202524505 U CN 202524505U CN 201220174330 CN201220174330 CN 201220174330 CN 201220174330 U CN201220174330 U CN 201220174330U CN 202524505 U CN202524505 U CN 202524505U
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Abstract
The utility model relates to an audio and video frequency transmission system based on wireless network. The audio and video frequency transmission system based on the wireless network comprises a wireless audio and video collecting processing device, a wireless audio and video terminal device and a background monitoring system. The wireless audio and video terminal device is respectively connected with the wireless audio and video collecting processing device and the background monitoring system. The wireless audio and video collecting processing device and the wireless audio and video terminal device are connected through the wireless network, and the wireless audio and video collecting processing device comprises an audio and video collecting processing module, a 3rd generation telecommunication (3G) audio and video sending server, and a microwave audio and video sending server, wherein the audio and video collecting processing module is respectively connected with the 3G audio and video sending server and the microwave audio and video sending server. According to the audio and video frequency transmission system based on the wireless network, full-network transmission is supported, a communication link framework is a combination way of the wireless digital microwave coded orthogonal frequency division multiplexing (COFDM) network and the 3G wireless network, and therefore coverage area is wide. A microwave base station is easy to erect, low in cost and simple in operation.
Description
Technical field
The utility model relates to the Radio Transmission Technology of audio-video signal, particularly realizes image, the transmission of audio frequency real-time radio simultaneously, is specifically related to a kind of based on the wireless network audio-video transmission system.
Background technology
In the wireless remote monitering field, existing wireless monitoring technology mainly contains following two kinds: a kind of is to utilize wireless router and wireless camera to form, and on network, realizes video monitoring through the wireless local net mode.This technology has emission, receiving range near, and receives outer signals to disturb shortcomings such as big.Another kind is the wireless monitoring equipment that utilizes wireless public communication network, and for example, the disclosed patented technology of utility model patent CN2730054 has adopted CDMA 1X network to carry out the long-distance video transmission, though this patented technology can realize long-distance transmissions.But at present the 3G network coverage rate is greatly about 85～95% scope, adds that the 3G network number of users is many in the urban district, jitter, and situation off and on often occurs, and causes transmission to interrupt impact effect.In this case, the user can only utilize expensive satellite network to transmit, and the satellite equipment fitting operation is complicated in addition, need drop into manpower again, makes monitoring cost increase suddenly, loses more than gain.
The utility model content
To the problems referred to above; The purpose of the utility model is to overcome the deficiency of prior art; Solve bandwidth, region limitation and the expensive problem of satellite mode of the short distance of wireless local net mode in the past, single CDMA 1X network; Propose a kind ofly, realize the removable audio frequency and video communication of barrier-free wireless based on multiple 3G cordless communication network and COFDM wireless digital microwave transmission system.
The technical scheme of the utility model is: a kind of based on the wireless network audio-video transmission system; Comprise wireless audio and video acquiring and processing device, wireless audio and video terminal equipment and rear supervisory control system; Described wireless audio and video terminal equipment is connected with wireless audio and video acquiring and processing device and rear supervisory control system respectively; Described wireless audio and video acquiring and processing device is connected through wireless network with the wireless audio and video terminal equipment, and described wireless audio and video acquiring and processing device comprises audio-video collection processing module and 3G audio frequency and video send server that is connected with the audio-video collection processing module respectively and microwave audio frequency and video send server.
Above-mentioned is a kind of based on the wireless network audio-video transmission system, and described wireless network comprises COFDM wireless digital microwave and 3G network.
Above-mentioned is a kind of based on the wireless network audio-video transmission system; The wireless audio and video terminal equipment receives sending module, microwave audio frequency and video receiver module, microwave commentaries on classics 3G audio frequency and video processing module, digital switch, central processing module by the 3G audio frequency and video; Described 3G audio frequency and video receive sending module and are connected with digital switch; Described microwave audio frequency and video receiver module changes 3G audio frequency and video processing module through microwave and is connected with digital switch, and digital switch is connected with CPU module.
Above-mentioned is a kind of based on the wireless network audio-video transmission system; Described CPU module also is connected with auxiliary equipment, and described auxiliary equipment comprises at least a in earphone, microphone, audio frequency amplification module, keyboard, touch display screen, memory device and the mouse.
Above-mentioned is a kind of based on the wireless network audio-video transmission system, and described CPU module also is connected with, earphone, microphone, memory device.
Above-mentioned is a kind of based on the wireless network audio-video transmission system, and described central processing module adopts the Atom of Intel processor, and described audio-video collection processing module is the DAVINCI processor.
Above-mentioned is a kind of based on the wireless network audio-video transmission system, and described rear supervisory control system also is provided with the 3G audio frequency and video and receives sending module.
The beneficial effect of the utility model is: the first, and native system is supported the whole network transmission, its communication link framework does, wireless digital microwave COFDM network and the 3G wireless network mode that combines, wide coverage.The second, set up simply the microwave base station, and cost is low, need not staff on duty and operation, simplifies monitor procedure.The 3rd, native system can be handled a plurality of wireless terminal devices simultaneously, is with good expansibility.
Description of drawings
Fig. 1 is the system configuration sketch map of the utility model.
Fig. 2 is the wireless audio and video acquiring and processing device structural representation of the utility model.
Fig. 3 be the utility model the wireless audio and video terminal equipment structural representation and with the sketch map that is connected of rear supervisory control system.
Fig. 4 is a kind of audio frequency and video transmission method flow chart based on wireless network of the utility model.
Embodiment
Like Fig. 1; The utility model shown in Figure 2 is a kind of based on the wireless network audio-video transmission system; Comprise wireless audio and video acquiring and processing device, wireless audio and video terminal equipment and rear supervisory control system; Described wireless audio and video terminal equipment is connected with wireless audio and video acquiring and processing device and rear supervisory control system respectively; Described wireless audio and video acquiring and processing device is connected through wireless network with the wireless audio and video terminal equipment, and described wireless audio and video acquiring and processing device comprises audio-video collection processing module and 3G audio frequency and video send server that is connected with the audio-video collection processing module respectively and microwave audio frequency and video send server.Described wireless network preferred COFDM wireless digital microwave and 3G network.Wherein the audio-video collection processing module is used to gather, compress, encrypt the audio-video signal of control point.In the place that the 3G signal is arranged, 3G audio frequency and video send server uses 3G network that audio, video data is transferred to the wireless audio and video terminal equipment; At the 3G weak output signal with there is not the place of 3G signal, transmit signals to the wireless audio and video terminal equipment through microwave through microwave audio frequency and video send server.
The structural representation of wireless audio and video terminal equipment as shown in Figure 3 and with the sketch map that is connected of rear supervisory control system; The wireless audio and video terminal equipment receives sending module, microwave audio frequency and video receiver module, microwave commentaries on classics 3G audio frequency and video processing module, digital switch, central processing module by the 3G audio frequency and video; Described 3G audio frequency and video receive sending module and are connected with digital switch; Described microwave audio frequency and video receiver module changes 3G audio frequency and video processing module through microwave and is connected with digital switch, and digital switch is connected with CPU module.Described CPU module also is connected with auxiliary equipment, and described auxiliary equipment comprises earphone, microphone, audio frequency amplification module, keyboard, touch display screen, memory device and mouse.
3G audio frequency and video send server adopts high performance 32 embedded place devices, but high speed processing agreement and mass data, and software kernel adopts built-in Linux operating system, reduces the dependence of system to hardware; The mode that microwave audio frequency and video send server adopts DSP and FPGA to combine; The method for designing of software radio is adopted in design; Platform is by a slice DSP (TMS320C642), a slice scale programmable logic device FPGA (CycloneII EP2C35), up-conversion chip DUC (AD9857), down-conversion chip DDC formations such as (HSP50214B), and this technology belongs to known technology and repeats no more.
Above-mentioned is a kind of based on the wireless network audio-video transmission system, can also only also be connected with at CPU module according to actual conditions, auxiliary equipment such as earphone, microphone, memory device.Above-mentioned central processing module adopts the Atom of Intel processor, and described audio-video collection processing module is the DAVINCI processor.The wireless audio and video terminal equipment has audio frequency and video reception, transmission, broadcast and four functions of intercommunication concurrently.
The wireless audio and video terminal equipment is mainly used in and receives the audio-video signal that shows the place ahead, and audio-video signal is transferred to the supervisory control system at rear.Because the audio-video signal that the place ahead is transmitted has passed through compression,, also need carry out decompress(ion) and demonstration through central processing module so want to watch.
The microwave audio-video signal is after microwave audio frequency and video receiver module receives; Change 3G audio frequency and video processing module through microwave and be converted into 3G network signal (microwave changes 3G audio frequency and video processing module and adopts scale programmable logic device FPGA (CycloneII EP2C8) to realize the conversion of signal and procotol); Signal through conversion can receive sending module via the 3G audio frequency and video, is sent to the rear monitoring, also can be after digital switch and central processing unit processing; Be presented on the touch display screen, realize intercommunication.
Described rear supervisory control system also is provided with the 3G audio frequency and video and receives sending module; The 3G audio-video signal can directly be sent to the rear monitoring without the wireless audio and video terminal equipment; Also can receive the automatic decompress(ion) of sending module, deciphering through the 3G audio frequency and video; After digital switch and central processing unit processing, be presented on the touch display screen, realize intercommunication.
Like a kind of audio frequency and video transmission method flow chart of the described the utility model of Fig. 4 based on wireless network, may further comprise the steps,
A. the analog audio-video conversion of signals of gathering is become digital audio-video signal,
B. digital signal is compressed,
C. judge it is whether audio frequency and video send server location is coated with 3G network,
If d. audio frequency and video send server location is coated with 3G network; Just digital audio-video signal is transferred to wireless audio and video terminal equipment and rear supervisory control system through 3G audio frequency and video send server; Otherwise, digital audio-video signal is transferred to wireless audio and video terminal equipment and rear supervisory control system through microwave audio frequency and video send server.Described compression step adopts H.264 video format compression, supports multiple resolution real-time coding, supports the multiple network agreement.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection range of the utility model.
Claims (7)
1. one kind based on the wireless network audio-video transmission system; Comprise wireless audio and video acquiring and processing device, wireless audio and video terminal equipment and rear supervisory control system; Described wireless audio and video terminal equipment is connected with wireless audio and video acquiring and processing device and rear supervisory control system respectively; It is characterized in that: described wireless audio and video acquiring and processing device is connected through wireless network with the wireless audio and video terminal equipment, and described wireless audio and video acquiring and processing device comprises audio-video collection processing module and 3G audio frequency and video send server that is connected with the audio-video collection processing module respectively and microwave audio frequency and video send server.
2. according to claim 1 a kind of based on the wireless network audio-video transmission system, it is characterized in that: described wireless network comprises COFDM wireless digital microwave and 3G network
3. according to claim 1 a kind of based on the wireless network audio-video transmission system; It is characterized in that: the wireless audio and video terminal equipment receives sending module, microwave audio frequency and video receiver module, microwave commentaries on classics 3G audio frequency and video processing module, digital switch, central processing module by the 3G audio frequency and video; Described 3G audio frequency and video receive sending module and are connected with digital switch; Described microwave audio frequency and video receiver module changes 3G audio frequency and video processing module through microwave and is connected with digital switch, and digital switch is connected with CPU module.
4. according to claim 3 a kind of based on the wireless network audio-video transmission system; It is characterized in that: described CPU module also is connected with auxiliary equipment, and described auxiliary equipment comprises at least a in earphone, microphone, audio frequency amplification module, keyboard, touch display screen, memory device and the mouse.
5. according to claim 3 a kind of based on the wireless network audio-video transmission system, it is characterized in that: described CPU module also is connected with, earphone, microphone, memory device.
6. according to claim 3 or 4 described a kind of based on the wireless network audio-video transmission system, it is characterized in that: described central processing module adopts the Atom of Intel processor, and described audio-video collection processing module is the DAVINCI processor.
7. each is described a kind of based on the wireless network audio-video transmission system according to claim 1-5, it is characterized in that: described rear supervisory control system also is provided with the 3G audio frequency and video and receives sending module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220174330 CN202524505U (en) | 2012-04-24 | 2012-04-24 | Audio and video frequency transmission system based on wireless network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220174330 CN202524505U (en) | 2012-04-24 | 2012-04-24 | Audio and video frequency transmission system based on wireless network |
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| CN202524505U true CN202524505U (en) | 2012-11-07 |
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| CN 201220174330 Expired - Fee Related CN202524505U (en) | 2012-04-24 | 2012-04-24 | Audio and video frequency transmission system based on wireless network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103379309A (en) * | 2012-04-24 | 2013-10-30 | 西安朗达电子科技有限公司 | Audio and video transmission system based on wireless network and transmission method thereof |
| CN107146391A (en) * | 2017-05-10 | 2017-09-08 | 合肥慧图软件有限公司 | A kind of remote monitoring system being combined based on mobile communication and microwave |
| CN108184084A (en) * | 2017-12-29 | 2018-06-19 | 北京九方广维科技有限公司 | The video-signal transmission method and device of intercom |
-
2012
- 2012-04-24 CN CN 201220174330 patent/CN202524505U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103379309A (en) * | 2012-04-24 | 2013-10-30 | 西安朗达电子科技有限公司 | Audio and video transmission system based on wireless network and transmission method thereof |
| CN107146391A (en) * | 2017-05-10 | 2017-09-08 | 合肥慧图软件有限公司 | A kind of remote monitoring system being combined based on mobile communication and microwave |
| CN108184084A (en) * | 2017-12-29 | 2018-06-19 | 北京九方广维科技有限公司 | The video-signal transmission method and device of intercom |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130424 |