CN202353710U - Power line video surveillance system - Google Patents
Power line video surveillance system Download PDFInfo
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- CN202353710U CN202353710U CN2011204021795U CN201120402179U CN202353710U CN 202353710 U CN202353710 U CN 202353710U CN 2011204021795 U CN2011204021795 U CN 2011204021795U CN 201120402179 U CN201120402179 U CN 201120402179U CN 202353710 U CN202353710 U CN 202353710U
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Abstract
The utility model discloses a power line video surveillance system which comprises a video server sending end, a video server receiving end and a power line. The technical scheme includes that an integrated video processing module, a communication module and a video decoding server for video surveillance are adopted, the power line serves as a transmission medium, and the video server sending end receives, modulates and compresses video signals, then transmits the signals to the power line. The video server receiving end acquires the signals from the power line, and extracts, demodulates and restores the video signals. The technical scheme is based on flexibility for laying the building power line; besides, electric power is needed to supply for the surveillance system, and the power line serving as a communication medium for providing power and surveillance can be laid in places where a surveillance device needs to be erected. The power line video surveillance system has the advantages that the work amount is reduced, the input cost is low, the surveillance is in accordance with a spot, and the expansion is convenient.
Description
Technical field
The utility model relates to the system that utilizes power circuit to communicate, and relates in particular to a kind of power line video monitoring system, particularly a kind of video monitoring system based on low-voltage power line communication.
Background technology
Power line communication technology mainly is meant a kind of communication technology of utilizing the power line transmission data, as far back as the '20s initial stage in last century, just becomes a reality through power line communication.Power line communication technology possesses need not wiring, wide coverage, easy to connect, channel reliability is high, the small investment instant effect, with advantages such as power grid construction is synchronous.
Existing video monitoring mode mainly contains following several kinds of modes: (1) is the video monitoring system of cable transmission analog signal directly; (2) video monitoring system that connects through DVR; (3) video monitoring system through the interconnected network mode transmission of digital signals; (4) through wireless mode transmission of video supervisory control system.The shortcoming of above-mentioned four kinds of modes is: bandwidth is narrow, speed is slow excessively, real-time is relatively poor, stability is not high, construction work more complicated in addition, and operating expenses is higher.
The utility model content
The technical problem that the utility model mainly solves provides a kind of video monitoring system; This system utilizes power line as transmission medium; Flexibility based on the laying of the power line in the building; Supervisory control system also needs power supply in addition, and power line can be routed to the place that need set up watch-dog, thereby the communication medium of electric power and monitoring is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of power line video monitoring system is provided, and said system comprises video server transmitting terminal, video server receiving terminal and power line; Said video server transmitting terminal comprises: first video processing module and first communication module; Said first video processing module comprises vision signal input port and vision signal delivery outlet, and said first communication module comprises video reception mouth and digital signal transmitting terminal; The vision signal input port of said first video processing module links to each other with external video source, and the vision signal delivery outlet links to each other with the video reception mouth of first communication module; Said video server receiving terminal comprises second video processing module and second communication module; Said second video processing module comprises vision signal input port and vision signal delivery outlet, and said second communication module comprises digital signal receiving terminal and vision signal delivery outlet; The vision signal delivery outlet of said second communication module links to each other with the vision signal input port of second video processing module; Said video server transmitting terminal is through the digital signal transmitting terminal and the power line bridge joint of first communication module; Said video server receiving terminal is through the digital signal receiving terminal and the power line bridge joint of second communication module.
Wherein, said communication module is the ofdm communication module.
In addition, said system also comprises the cradle head control device, and said cradle head control device links to each other with said video server transmitting terminal.
In a progressive scheme, said video server transmitting terminal also comprises first audio processing modules, and said video server receiving terminal also comprises second audio processing modules; Said first audio processing modules comprises audio signal input port and audio signal output mouth, and said first communication module also comprises the audio signal receiving port; The audio signal input port of said first audio processing modules links to each other with external audio source, and the audio signal output mouth links to each other with the audio signal receiving port of first communication module; Said second audio processing modules comprises audio signal input port and audio signal output mouth, and said second communication module also comprises the audio signal output mouth; The audio signal input port of said second audio processing modules links to each other with the audio signal output mouth of second communication module.
Wherein, said first communication module and second communication module include: signal coupler, transceiver controller, high pass filter, AFE(analog front end), digital processing unit and transmission driving arrangement; Said transceiver controller comprises signal transmitting and receiving end, signal sending end and signal receiving end; Said high pass filter comprises signal receiving end and signal sending end; Said transmission driving arrangement comprises signal receiving end and signal sending end; Said AFE(analog front end) comprises high-frequency signal receiving terminal, amplifying signal transmitting terminal and amplifying signal sending and receiving end, and said digital processing unit comprises signal transmitting and receiving end and MII interface; The sending and receiving end of said transceiver controller is through connecting said power line behind the signal coupler, signal sending end connects the signal receiving end of high pass filter, and signal receiving end connects the signal sending end that sends driving arrangement; The high-frequency signal receiving terminal of said AFE(analog front end) connects the filter signal transmitting terminal, and the amplifying signal transmitting terminal connects transmission driving arrangement signal receiving end, the signal transmitting and receiving end of amplifying signal sending and receiving end linking number WP; The MII interface of said digital processing unit connects said video processing module.
Wherein, said AFE(analog front end) is the AFE(analog front end) of controllable gain.
Wherein, said first video processing module comprises AD converter and video processor; Said AD converter comprises video signal collective mouth and digital signal delivery outlet, and said video processor comprises digital signal receiving port and vision signal delivery outlet; The video signal collective mouth of AD converter connects external video source, and the digital signal delivery outlet links to each other with the digital signal receiving port of video processor, and the vision signal delivery outlet of said video processor connects said first communication module.
Wherein, said second video processing module comprises DA transducer and video processor, and said DA transducer comprises analog signal receiving port and digital signal acquiring mouth, and said video processor comprises signal transmitting and receiving mouth and digital signal transmitting terminal; The signal transmitting and receiving mouth of said video processor connects said second communication module, and the digital signal transmitting terminal connects the digital signal acquiring mouth of DA transducer, the external video playback apparatus of analog signal receiving port of said DA transducer.
The beneficial effect of the utility model is: the video monitoring system that is different from prior art must rely on existing wired or wireless local area network (LAN) and transmit, and the monitoring place receives certain limitation, makes up or extends video monitoring equipment and need lay twisted-pair feeder; Need to solve problems such as wiring, power devices, even might need to destroy the existing building structure, the utility model adopts the integrated video processing module; Use said communication module, utilize power line, use the video decode server of video monitoring as transmission medium; Video server transmitting terminal receiving video signals and with said signal modulation compression then transfers signals to power line, and the video server receiving terminal obtains signal and with said signal decompress(ion) demodulation original video signal also from power line; Based on the flexibility that the power line in the building is laid, supervisory control system also needs power supply in addition, and power line can be routed to the place that need set up watch-dog; Be used to provide the communication medium of electric power and monitoring; Use this system, reduce quantities, input cost is low; With a monitoring, extend easy.
Description of drawings
Fig. 1 is the structural representation of the video monitoring system of the utility model;
Fig. 2 is the communication module structural representation of the video monitoring system of the utility model;
Fig. 3 is the video processing module structural representation of the video monitoring system of the utility model;
Fig. 4 is a kind of structural representation of execution mode of the video monitoring system of the utility model.
Embodiment
By the technology contents, the structural feature that specify the utility model, realized purpose and effect, know clearly below in conjunction with execution mode and conjunction with figs. and give explanation.
See also Fig. 1 and Fig. 2, the video monitoring system based on low-voltage power line communication of the utility model comprises video server transmitting terminal, video server receiving terminal and power line; Said video server transmitting terminal comprises: first audio processing modules, first video processing module and first communication module; Said first video processing module comprises vision signal input port and vision signal delivery outlet; Said first audio processing modules comprises audio signal input port and audio signal output mouth, and said first communication module comprises audio signal receiving port, video reception mouth and digital signal transmitting terminal; The audio signal input port of said first audio processing modules links to each other with external audio source, and the audio signal output mouth links to each other with the audio signal receiving port of first communication module; The vision signal input port of said first video processing module links to each other with external video source, and the vision signal delivery outlet links to each other with the video reception mouth of first communication module; Said video server receiving terminal comprises: second audio processing modules, second video processing module and second communication module; Said second video processing module comprises vision signal input port and vision signal delivery outlet; Said second audio processing modules comprises audio signal input port and audio signal output mouth, and said second communication module comprises digital signal receiving terminal, audio signal output mouth and vision signal delivery outlet; The audio signal output mouth of said second communication module links to each other with the audio signal input port of second audio processing modules, and the vision signal delivery outlet links to each other with the vision signal input port of second video processing module; Said video server transmitting terminal is through the digital signal transmitting terminal and the power line bridge joint of first communication module; Said video server receiving terminal is through the digital signal receiving terminal and the power line bridge joint of second communication module.Wherein, use the Audio Processing function and can realize the audio frequency intercommunication function, improve the ability of in-situ processing emergency event.
Consult accompanying drawing 1, to the video server transmitting terminal, described first video processing module after treatment, sends to first communication module from the rig camera receiving video signals, and first communication module imports data-signal into power line after said signal is modulated.For the video server receiving terminal; Said second communication module carries out the decompress(ion) demodulation after receiving signal, and signal is sent into second video processing module, and second video processing module sends to display device after with signal processing; Display device carries out video playback and records; Wherein, the second Audio Processing function can realize the audio frequency intercommunication function, improves in-situ processing emergency event ability.
In the present technique scheme; Described communication module is used the OFDM technology; OFDM is meant orthogonal frequency division multiplexi, and this technology is the basis of HPA alliance industrial specification, and it adopts a kind of discontinuous multi-tone technology; A large amount of signals that will be called as in the different frequency of carrier wave are merged into single signal; Thereby accomplish the transmission of signal,, therefore usually can be used in perhaps resisted in the transmission medium of external interference by external interference owing to this technology has the ability of transmission signal under noise jamming; The OFDM technology has been widely used in audio frequency, video field and the commercial signal communication system of broadcast type at present, and main the application comprises: the DSL of expense symmetry, the digital audio broadcasting of etsi standard, DVB, high definition TV, WLAN etc.In the present technique scheme, use the OFDM technology, make the monitor video signal can be around interference signals the operation of safety; Its penetration capacity is good; The OFDM technology can continual monitoring transmission medium on the unexpected variation of communication characteristic since communication path transmit the ability of data can be over time, so OFDM can adapt to it dynamically; And connect and cut off corresponding carrier wave, with the communication of carrying out success that guarantees to continue.High-rise, the resident is intensive and geographical outstanding area local and that signal is disseminated, data dissemination at a high speed and voice broadcast service can reduce the influence of multipath effect to signal through using the OFDM technology.In addition, in the present technique scheme, use the OFDM technology, can effectively resist the interference between signal waveform, be applicable to the high speed data transfer in multi-path environment and the fading channel.Said AFE(analog front end) is the AFE(analog front end) of controllable gain.
In an optimized technical scheme, said system also comprises the cradle head control device, and said cradle head control device links to each other with said video server transmitting terminal.The Cloud Terrace is exactly the mounting platform that two alternating currents are formed; Can level with move both vertically; The Cloud Terrace in the present technique scheme is different from the The Cloud Terrace in the photographic equipment; The Cloud Terrace in the photographic equipment is a tripod just in general, can only regulate the orientation through hand adjustment, and the The Cloud Terrace described in the present technique scheme be through control system far-end can the control of video watch-dog the equipment of rotation direction.This system integration cradle head control function makes rig camera can have the monitoring function of multi-angle.
Among the utility model embodiment, said first communication module and second communication module include: signal coupler, transceiver controller, high pass filter, AFE(analog front end), digital processing unit and transmission driving arrangement; Wherein, said AFE(analog front end) is the AFE(analog front end) of Gain Adjustable.Said transceiver controller comprises signal transmitting and receiving end, signal sending end and signal receiving end; Said high pass filter comprises signal receiving end and signal sending end; Said transmission driving arrangement comprises signal receiving end and signal sending end; Said AFE(analog front end) comprises high-frequency signal receiving terminal, amplifying signal transmitting terminal and amplifying signal sending and receiving end, and said digital processing unit comprises signal transmitting and receiving end and MII interface; The sending and receiving end of said transceiver controller is through connecting said power line behind the signal coupler, signal sending end connects the signal receiving end of high pass filter, and signal receiving end connects the signal sending end that sends driving arrangement; The high-frequency signal receiving terminal of said AFE(analog front end) connects the filter signal transmitting terminal, and the amplifying signal transmitting terminal connects transmission driving arrangement device signal receiving end, the signal transmitting and receiving end of amplifying signal sending and receiving end linking number WP; The MII interface of said digital processing unit connects said video processing module.
Consult accompanying drawing 2, the ofdm communication module in the present technique scheme provides external signal wire interface, is connected on user's the low-voltage power line.
Said first communication module is used to receive signal, and in accepting state, the signal coupler of first communication module takes out the high-frequency modulation signal of power line; Arrive the reception high-pass filtering circuit through the transmitting-receiving switch controller; Remove low-frequency noise, through the AFE(analog front end) amplification entering digital processing unit of controllable gain, digital processing unit is a digital signal with analog signal conversion; After becoming the data that to transmit originally, send into video processing module through the MII interface of digital processing unit.
Said second communication module is used to send signal, in transmit status, gets into digital signal processing module from the data of video processing module from the MII interface; Convert digital signal into analog signal; After sending into AFE(analog front end) and amplifying, send to driving then, obtain enough energy after; Through transceiver controller, send on the electric power cable through signal coupler again.
See also accompanying drawing 3, said first video processing module comprises AD converter and video processor; Said AD converter comprises video signal collective mouth and digital signal delivery outlet, and said video processor comprises digital signal receiving port and vision signal delivery outlet; The video signal collective mouth of AD converter connects external video source, and the digital signal delivery outlet links to each other with the digital signal receiving port of video processor, and the vision signal delivery outlet of said video processor connects said first communication module.
Have, said second video processing module comprises DA transducer and video processor again, and said DA transducer comprises analog signal receiving port and digital signal acquiring mouth, and said video processor comprises signal transmitting and receiving mouth and digital signal transmitting terminal; The signal transmitting and receiving mouth of said video processor connects said second communication module, and the digital signal transmitting terminal connects the digital signal acquiring mouth of DA transducer, and the analog signal receiving port of said DA transducer connects video playback apparatus.
Wherein, first video processing module mainly is responsible for the reception task, and second video processing module mainly is responsible for the video playback task.For first video processing module, external video source, first-class like video monitoring shooting, vision signal sent into the video AD conversion after, video processor can with the vision signal after the conversion in addition processing and transmitting to the first ofdm communication module; For second video processing module; Video processor gets access to signal from the second ofdm communication module; Through after the decompress(ion) demodulation vision signal of number format being sent into video DA transducer; After the DA transducer converts digital signal to analog signal, analog video signal is sent into video playback apparatus to realize video monitoring.
See also a kind of execution mode of Fig. 4 the utility model; In this execution mode,, in Control Room, get final product the situation in the remote monitoring room 2, in addition through using existing power line equipment; Because native system is a cradle head control, use the situation that native system can also be monitored room 1 and office.
The technical scheme of the utility model is directly carried out long-range video monitoring through power line, connects easily; Both reduce the cost of construction, reduced the difficulty of construction again, and can transfer of data arrive the area that power line can reach; The technical scheme of the utility model, transfer of data is stable, clear picture.Use the OFDM technology, solved that the broadband is narrow in the existing video monitoring system, speed is slow excessively, real-time is poor, the not high shortcoming of stability.
Use said communication module, utilize power line, to carry out the video decode server of video monitoring as transmission medium; Video server transmitting terminal receiving video signals and with said signal modulation compression then transfers signals to power line, and the video server receiving terminal obtains signal and with said signal decompress(ion) demodulation original video signal also from power line; Based on the flexibility that the power line in the building is laid, supervisory control system also needs power supply in addition, and power line can be routed to the place that need set up watch-dog; Be used to provide the communication medium of electric power and monitoring, use this system, reduce quantities; Input cost is low, with a monitoring, extends easy.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure transformation that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (8)
1. a power line video monitoring system is characterized in that, comprises video server transmitting terminal, video server receiving terminal and power line;
Said video server transmitting terminal comprises: first video processing module and first communication module; Said first video processing module comprises vision signal input port and vision signal delivery outlet, and said first communication module comprises video reception mouth and digital signal transmitting terminal; The vision signal input port of said first video processing module links to each other with external video source, and the vision signal delivery outlet links to each other with the video reception mouth of first communication module;
Said video server receiving terminal comprises second video processing module and second communication module; Said second video processing module comprises vision signal input port and vision signal delivery outlet, and said second communication module comprises digital signal receiving terminal and vision signal delivery outlet; The vision signal delivery outlet of said second communication module links to each other with the vision signal input port of second video processing module;
Said video server transmitting terminal is through the digital signal transmitting terminal and the power line bridge joint of first communication module; Said video server receiving terminal is through the digital signal receiving terminal and the power line bridge joint of second communication module.
2. power line video monitoring system according to claim 1 is characterized in that: said communication module is the ofdm communication module.
3. power line video monitoring system according to claim 1 is characterized in that: also comprise the cradle head control device, said cradle head control device links to each other with said video server transmitting terminal.
4. according to claim 1 or 3 described power line video monitoring systems, it is characterized in that: said video server transmitting terminal also comprises first audio processing modules, and said video server receiving terminal also comprises second audio processing modules;
Said first audio processing modules comprises audio signal input port and audio signal output mouth, and said first communication module also comprises the audio signal receiving port; The audio signal input port of said first audio processing modules links to each other with external audio source, and the audio signal output mouth links to each other with the audio signal receiving port of first communication module;
Said second audio processing modules comprises audio signal input port and audio signal output mouth, and said second communication module also comprises the audio signal output mouth; The audio signal input port of said second audio processing modules links to each other with the audio signal output mouth of second communication module.
5. power line video monitoring system according to claim 1 is characterized in that: said first communication module and second communication module include: signal coupler, transceiver controller, high pass filter, AFE(analog front end), digital processing unit and transmission driving arrangement;
Said transceiver controller comprises signal transmitting and receiving end, signal sending end and signal receiving end; Said high pass filter comprises signal receiving end and signal sending end; Said transmission driving arrangement comprises signal receiving end and signal sending end; Said AFE(analog front end) comprises high-frequency signal receiving terminal, amplifying signal transmitting terminal and amplifying signal sending and receiving end, and said digital processing unit comprises signal transmitting and receiving end and MII interface;
The sending and receiving end of said transceiver controller is through connecting said power line behind the signal coupler, signal sending end connects the signal receiving end of high pass filter, and signal receiving end connects the signal sending end that sends driving arrangement; The high-frequency signal receiving terminal of said AFE(analog front end) connects the filter signal transmitting terminal, and the amplifying signal transmitting terminal connects transmission driving arrangement signal receiving end, the signal transmitting and receiving end of amplifying signal sending and receiving end linking number WP; The MII interface of said digital processing unit connects said video processing module.
6. power line video monitoring system according to claim 5 is characterized in that: said AFE(analog front end) is the AFE(analog front end) of controllable gain.
7. power line video monitoring system according to claim 1 is characterized in that: said first video processing module comprises AD converter and video processor; Said AD converter comprises video signal collective mouth and digital signal delivery outlet, and said video processor comprises digital signal receiving port and vision signal delivery outlet; The video signal collective mouth of AD converter connects external video source, and the digital signal delivery outlet links to each other with the digital signal receiving port of video processor, and the vision signal delivery outlet of said video processor connects said first communication module.
8. power line video monitoring system according to claim 1; It is characterized in that: said second video processing module comprises DA transducer and video processor; Said DA transducer comprises analog signal receiving port and digital signal acquiring mouth, and said video processor comprises signal transmitting and receiving mouth and digital signal transmitting terminal; The signal transmitting and receiving mouth of said video processor connects said second communication module, and the digital signal transmitting terminal connects the digital signal acquiring mouth of DA transducer, the external video playback apparatus of analog signal receiving port of said DA transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204021795U CN202353710U (en) | 2011-10-20 | 2011-10-20 | Power line video surveillance system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204021795U CN202353710U (en) | 2011-10-20 | 2011-10-20 | Power line video surveillance system |
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| CN202353710U true CN202353710U (en) | 2012-07-25 |
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| CN2011204021795U Expired - Lifetime CN202353710U (en) | 2011-10-20 | 2011-10-20 | Power line video surveillance system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199894A (en) * | 2013-01-09 | 2013-07-10 | 北京卓越信通电子股份有限公司 | High-speed power line carrier device used for transmitting digital signals |
| CN104052969A (en) * | 2014-06-12 | 2014-09-17 | 上海海洋大学 | Power line carrier photographing system for underwater LED fish gathering lamp |
| CN104822054A (en) * | 2015-04-27 | 2015-08-05 | 寅家电子科技（上海）有限公司 | Transmitting device, receiving device and system adopting power line to transmit audio and video signals |
| CN105872472A (en) * | 2016-04-29 | 2016-08-17 | 南京巨鲨显示科技有限公司 | Wireless video signal transmission and display system and method |
-
2011
- 2011-10-20 CN CN2011204021795U patent/CN202353710U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199894A (en) * | 2013-01-09 | 2013-07-10 | 北京卓越信通电子股份有限公司 | High-speed power line carrier device used for transmitting digital signals |
| CN104052969A (en) * | 2014-06-12 | 2014-09-17 | 上海海洋大学 | Power line carrier photographing system for underwater LED fish gathering lamp |
| CN104822054A (en) * | 2015-04-27 | 2015-08-05 | 寅家电子科技（上海）有限公司 | Transmitting device, receiving device and system adopting power line to transmit audio and video signals |
| CN105872472A (en) * | 2016-04-29 | 2016-08-17 | 南京巨鲨显示科技有限公司 | Wireless video signal transmission and display system and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lin Dapeng Inventor after: Cang Zhibin Inventor after: Chen Yong Inventor after: Shi Bing Inventor after: Liu Qingyang Inventor after: Zhang Xihong Inventor after: He Yeshen Inventor after: Pan Kaiqi Inventor before: Lin Dapeng Inventor before: Cang Zhibin Inventor before: Chen Yong Inventor before: Shi Bing Inventor before: Liu Qingyang Inventor before: Zhang Xihong Inventor before: He Yeshen Inventor before: Pan Kaiqi |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |