CN105915854A - Long-distance video monitoring system based on laser chaos - Google Patents
Long-distance video monitoring system based on laser chaos Download PDFInfo
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- CN105915854A CN105915854A CN201610370164.2A CN201610370164A CN105915854A CN 105915854 A CN105915854 A CN 105915854A CN 201610370164 A CN201610370164 A CN 201610370164A CN 105915854 A CN105915854 A CN 105915854A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/001—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using chaotic signals
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- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a long-distance video monitoring system based on laser chaos, comprising multiple cameras, a first video processing module, a laser chaos module, a signal loading module, a signal sending module, a signal receiving module, a signal demodulation module, a second video processing module, and a monitor. Through the laser chaos module, laser chaotic carrier synchronization between a server and a client can be easily realized, laser chaotic signal synchronous communication is realized based on secure transmission of laser chaotic signals in the physical layer, and the confidentiality of information transmission is improved. As the signal loading module and the signal demodulation module are arranged into an optical structure and signal transmission between the signal sending module and the signal receiving module is carried out through an optical fiber, high-bandwidth video signal transmission is realized. According to the invention, purely physical hardware encryption of video information is realized. The system has natural physical security, can be used to conduct long-distance, high-bandwidth, low-loss and high-security video communication, and has a great application prospect.
Description
Technical field:
The invention belongs to private communication technology field, be specifically related to a kind of length based on laser chaos away from
From video monitoring system.
Background technology:
Since entering 21st century, information is widely used with network technology, the network information
Communication enters in the productive life of people irresistiblely, and developing rapidly of information technology is improving production
Power brings easily simultaneously, also brings the newest problem and challenge.Information security becomes
Wherein prominent hot issue, estimates according to survey of organization of Federation of American Scientists and expert, the U.S. is every
The economic loss that year is caused because of information security issue is up to 15,000,000,000 dollars.Mass data is with plaintext
Form is transmitted by open network, has serious potential safety hazard.Information security becomes restriction
One of further wide variety of key factor of network technology.
In recent years, the Internet video such as video conference, video monitoring application development is swift and violent.But it is existing
The commonly used clear data of video monitoring system transmits, while making outstanding contributions for social safety
Also new safety problem is brought, such as unauthorized access data, threat data integrity and invade
Violate privacy of user etc..Video monitoring system is in terms of video secret communication, and it is mainly by video
Gather and play, the transmission of the compression of video and decompression, the encryption of video and deciphering and video with connect
Several steps such as receipts complete, and traditional video encryption method mainly relies on computerized algorithm or electricity
The encryption of chaos, therefore it there is also deficiency at the aspect such as safety, bandwidth；Higher signal declines
Subtract the natural obstacle also caused long haul communication business.
Summary of the invention:
To this end, the technical problem to be solved is in prior art that video monitoring system is regarding
Frequently secret communication aspect uses traditional video encryption method, and it is also deposited at the aspect such as safety, bandwidth
Not enough；Higher signal attenuation also causes the natural obstacle long haul communication business, thus proposes
A kind of distance video monitoring system based on laser chaos.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of distance video monitoring system based on laser chaos, including:
Multiple photographic head, the plurality of photographic head is arranged on service end, and multiple described photographic head are used for obtaining
Take the first video signal of multiple control point.
First video processing module, described first video processing module is arranged on service end, and described first
Video processing module obtains the second video signal for carrying out described first video signal processing.
Laser chaos module, described laser chaos module is arranged on system configurating terminal, and described laser mixes
Ignorant module is for producing the laser chaos signal of synchronization and being respectively outputted to service end and client, described
Service end receives the first laser chaos signal, and described client receives the second laser chaos signal,
Described first laser chaos signal and described second laser chaos signal synchronize.
Signal loading module, described signal loading module is arranged on service end, described signal loading module
For described first laser chaos signal loading to described second video signal forming the 3rd video letter
Number.
Signal transmitting module, described signal transmitting module is arranged on service end, described signal transmitting module
For described 3rd video signal is sent to client.
Signal receiving module, described signal receiving module is arranged on client, described signal receiving module
For receiving described 3rd video signal that service end sends.
Signal demodulation module, described signal demodulation module is arranged on client, described signal demodulation module
For described 3rd video signal being demodulated according to described second laser chaos signal, obtain the 4th
Video signal.
Second video processing module, described second video processing module is arranged on client, and described second
Video processing module, for processing described 4th video signal, obtains the 5th video signal.
Watch-dog, described watch-dog is arranged on client, and described watch-dog is for by described 5th video
Signal plays out, and monitors in real time.
Preferred as technique scheme, described first video processing module includes:
Splitting submodule, described fractionation submodule is used for described first video signal is carried out deconsolidation process,
Described first video signal is split into several video signal informations unifying wavelength.
Compression submodule, described compression submodule is for being compressed the first video signal after splitting.
Encoding submodule, described encoding submodule is for the first encoding video signal after compression.
First transform subblock, described first transform subblock is for by the first video signal after coding
Be converted to video light signal, using described video light signal as the second video signal.
Preferred as technique scheme, described encoding submodule uses H.264 coded system.
Preferred as technique scheme, described laser chaos module include semiconductor laser,
One fiber coupler, the first Polarization Controller, the first response laser instrument, the second Polarization Controller, the
Two response laser instrument, described semiconductor laser is connected with described fiber coupler, described first optical fiber
First outfan of bonder is connected with described first Polarization Controller, described first Polarization Controller with
Described first response laser instrument connects, the second outfan of described fiber coupler and described second polarization
Controller connects, and described second Polarization Controller is connected with described second response laser instrument.
Preferred as technique scheme, described signal loading module include the second fiber coupler,
First photomodulator, described second fiber coupler is connected with described first response laser instrument, and described the
The input of one photomodulator respectively with described second fiber coupler, described first video processing module
Connecting, the outfan of described first photomodulator is connected with described signal transmitting module.
Preferred as technique scheme, described signal demodulation module include the 3rd fiber coupler,
Second photomodulator, described 3rd fiber coupler is connected with described second response laser instrument, and described the
The input of two photomodulators is connected with described 3rd fiber coupler, described signal receiving module respectively,
The outfan of described second photomodulator is connected with described second video processing module.
Preferred as technique scheme, described second video processing module includes:
Second transform subblock, described second transform subblock is for by described 4th video signal conversion
For the signal of telecommunication.
Signal amplifies submodule, and described signal amplifies submodule for the 4th video signal after conversion
Carry out signal amplification.
Decoding sub-module, the described decoding sub-module the 4th video signal after amplifying signal is carried out
Decoding.
Decompression module, described decompression module is for carrying out decoded 4th video signal
Decompress.
Combination submodule, described combination submodule is for entering the 4th video signal after described decompression
Row combination, forms the 5th video signal.
Preferred as technique scheme, described client is additionally provided with channel switching module, described
Channel switching module is connected with described watch-dog, and described channel switching module is taken the photograph multiple for watch-dog
As head freely switches, obtain the video information of multiple control points in real time.
Preferred as technique scheme, described signal transmitting module and described signal receiving module are adopted
Use fiber optic communication mode.
The beneficial effects of the present invention is: it is by arranging laser chaos module, can be real easily
Existing service end and the laser chaos carrier synchronization of client, utilize the physical layer transmission of laser chaos signal
Safety realizes laser chaos signal synchronous communication, improves the confidentiality of information transmission；It is by setting
Confidence load-on module, signal demodulation module are optical texture, and signal transmitting module receives mould with signal
Block passes through fiber-optic transfer, it is possible to achieve the video signal transmission of high bandwidth.The present invention can be by video information
Carry out the hardware encryption of pure physics, there is natural physical security, overcome video monitoring system simultaneously
The shortcoming that video encryption method traditional in system exists, it is possible to carry out distance, high bandwidth, low-loss,
The video communication that safety is high, has great application prospect.
Accompanying drawing illustrates:
The following drawings is only intended to, in schematically illustrating the present invention and explaining, not limit the present invention's
Scope.Wherein:
Fig. 1 is the distance video monitoring system based on laser chaos of one embodiment of the invention；
Fig. 2 is the first video processing module structural representation of one embodiment of the invention；
Fig. 3 is the laser chaos modular structure schematic diagram of one embodiment of the invention；
Fig. 4 is the second video processing module structural representation of one embodiment of the invention.
Detailed description of the invention:
As it is shown in figure 1, the distance video monitoring system based on laser chaos of the present invention, including:
Multiple photographic head, the plurality of photographic head is arranged on service end, and multiple described photographic head are used for obtaining
Take the first video signal of multiple control point.
First video processing module, described first video processing module is arranged on service end, and described first
Video processing module obtains the second video signal for carrying out described first video signal processing.Such as figure
Shown in 2, described first video processing module includes:
Splitting submodule, described fractionation submodule is used for described first video signal is carried out deconsolidation process,
Described first video signal is split into several video signal informations unifying wavelength.
Compression submodule, described compression submodule is for being compressed the first video signal after splitting.
Encoding submodule, described encoding submodule is for the first encoding video signal after compression.
In the present embodiment, described encoding submodule uses H.264 coded system.
First transform subblock, described first transform subblock is for by the first video signal after coding
Be converted to video light signal, using described video light signal as the second video signal.
Laser chaos module, described laser chaos module is arranged on system configurating terminal, and described laser mixes
Ignorant module is for producing the laser chaos signal of synchronization and being respectively outputted to service end and client, described
Service end receives the first laser chaos signal, and described client receives the second laser chaos signal,
Described first laser chaos signal and described second laser chaos signal synchronize.As it is shown on figure 3, it is described
Laser chaos module include semiconductor laser, the first fiber coupler, the first Polarization Controller,
One response laser instrument, the second Polarization Controller, second response laser instrument, described semiconductor laser with
Described fiber coupler connects, the first outfan of described first fiber coupler and described first polarization
Controller connects, and described first Polarization Controller is connected with described first response laser instrument, described optical fiber
Second outfan of bonder is connected with described second Polarization Controller, described second Polarization Controller with
Described second response laser instrument connects.
Signal loading module, described signal loading module is arranged on service end, described signal loading module
For described first laser chaos signal loading to described second video signal forming the 3rd video letter
Number.Described signal loading module includes the second fiber coupler, the first photomodulator, described second light
Fine bonder is connected with described first response laser instrument, the input of described first photomodulator respectively with
Described second fiber coupler, described first video processing module connect, described first photomodulator
Outfan is connected with described signal transmitting module.
Signal transmitting module, described signal transmitting module is arranged on service end, described signal transmitting module
For described 3rd video signal is sent to client.
Signal receiving module, described signal receiving module is arranged on client, described signal receiving module
For receiving described 3rd video signal that service end sends.Described signal transmitting module and described signal
Receiver module uses fiber optic communication mode.
Signal demodulation module, described signal demodulation module is arranged on client, described signal demodulation module
For described 3rd video signal being demodulated according to described second laser chaos signal, obtain the 4th
Video signal.Described signal demodulation module includes the 3rd fiber coupler, the second photomodulator, described
3rd fiber coupler is connected with described second response laser instrument, the input of described second photomodulator
It is connected with described 3rd fiber coupler, described signal receiving module respectively, described second photomodulator
Outfan be connected with described second video processing module.
Second video processing module, described second video processing module is arranged on client, and described second
Video processing module, for processing described 4th video signal, obtains the 5th video signal.As
Shown in Fig. 4, described second video processing module includes:
Second transform subblock, described second transform subblock is for by described 4th video signal conversion
For the signal of telecommunication.
Signal amplifies submodule, and described signal amplifies submodule for the 4th video signal after conversion
Carry out signal amplification.
Decoding sub-module, the described decoding sub-module the 4th video signal after amplifying signal is carried out
Decoding.
Decompression module, described decompression module is for carrying out decoded 4th video signal
Decompress.
Combination submodule, described combination submodule is for entering the 4th video signal after described decompression
Row combination, forms the 5th video signal.
Watch-dog, described watch-dog is arranged on client, and described watch-dog is for by described 5th video
Signal plays out, and monitors in real time.
Described client is additionally provided with channel switching module, described channel switching module and described watch-dog
Connecting, multiple photographic head are freely switched by described channel switching module for watch-dog, obtain many in real time
The video information of individual control point.
The invention discloses a kind of distance video monitoring system based on laser chaos, take the photograph including multiple
As head, the first video processing module, laser chaos module, signal loading module, signal transmitting module,
Signal receiving module, signal demodulation module, the second video processing module, watch-dog.It is by arranging
Laser chaos module, can be easily carried out the laser chaos carrier synchronization of service end and client,
The physical layer transmission safety utilizing laser chaos signal realizes laser chaos signal synchronous communication, improves
The confidentiality of information transmission；Its by arranging signal loading module, signal demodulation module be optics knot
Structure, signal transmitting module and signal receiving module pass through fiber-optic transfer, it is possible to achieve the video of high bandwidth
Signal transmits.Video information can be carried out the hardware encryption of pure physics by the present invention, has natural physics
Safety, overcomes the shortcoming that video encryption method traditional in video monitoring system exists, energy simultaneously
Enough carry out the video communication that distance, high bandwidth, low-loss, safety are high, there is the biggest application
Prospect.
Obviously, above-described embodiment is only for clearly demonstrating example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also all of embodiment being given
With exhaustive.And the obvious change thus extended out or variation are still in the guarantor of the invention
Protect among scope.
Claims (9)
1. a distance video monitoring system based on laser chaos, it is characterised in that including:
Multiple photographic head, the plurality of photographic head is arranged on service end, and multiple described photographic head are used for obtaining multiple monitoring
First video signal of point；
First video processing module, described first video processing module is arranged on service end, described first Video processing mould
Block obtains the second video signal for carrying out described first video signal processing；
Laser chaos module, described laser chaos module is arranged on system configurating terminal, and described laser chaos module is used for
Producing the laser chaos signal synchronized and be respectively outputted to service end and client, described service end receives the first laser
Chaotic signal, described client receives the second laser chaos signal, described first laser chaos signal and described second
Laser chaos signal synchronizes；
Signal loading module, described signal loading module is arranged on service end, and described signal loading module is for by described
First laser chaos signal loading forms the 3rd video signal in described second video signal；
Signal transmitting module, described signal transmitting module is arranged on service end, and described signal transmitting module is for by described
3rd video signal is sent to client；
Signal receiving module, described signal receiving module is arranged on client, and described signal receiving module is used for receiving clothes
Described 3rd video signal that business end sends；
Signal demodulation module, described signal demodulation module is arranged on client, and described signal demodulation module is for according to institute
State the second laser chaos signal described 3rd video signal is demodulated, obtain the 4th video signal；
Second video processing module, described second video processing module is arranged on client, described second Video processing mould
Block, for processing described 4th video signal, obtains the 5th video signal；
Watch-dog, described watch-dog is arranged on client, and described watch-dog is for broadcasting described 5th video signal
Put, monitor in real time.
Distance video monitoring system based on laser chaos the most according to claim 1, it is characterised in that:
Described first video processing module includes:
Splitting submodule, described fractionation submodule is for carrying out deconsolidation process to described first video signal, by described the
One video signal splits into several video signal informations unifying wavelength；
Compression submodule, described compression submodule is for being compressed the first video signal after splitting；
Encoding submodule, described encoding submodule is for the first encoding video signal after compression；
First transform subblock, described first transform subblock is for being converted to video by the first video signal after coding
Optical signal, using described video light signal as the second video signal.
Distance video monitoring system based on laser chaos the most according to claim 2, it is characterised in that: institute
State encoding submodule and use H.264 coded system.
Distance video monitoring system based on laser chaos the most according to claim 1, it is characterised in that: institute
State laser chaos module and include that semiconductor laser, the first fiber coupler, the first Polarization Controller, the first response swash
Light device, the second Polarization Controller, the second response laser instrument, described semiconductor laser is connected with described fiber coupler,
First outfan of described first fiber coupler is connected with described first Polarization Controller, described first Polarization Controller
Being connected with described first response laser instrument, the second outfan of described fiber coupler is with described second Polarization Controller even
Connecing, described second Polarization Controller is connected with described second response laser instrument.
Distance video monitoring system based on laser chaos the most according to claim 1, it is characterised in that: institute
State signal loading module and include the second fiber coupler, the first photomodulator, described second fiber coupler and described the
One response laser instrument connects, the input of described first photomodulator respectively with described second fiber coupler, described the
One video processing module connects, and the outfan of described first photomodulator is connected with described signal transmitting module.
Distance video monitoring system based on laser chaos the most according to claim 1, it is characterised in that: institute
State signal demodulation module and include the 3rd fiber coupler, the second photomodulator, described 3rd fiber coupler and described the
Two response laser instrument connect, the input of described second photomodulator respectively with described 3rd fiber coupler, described letter
Number receiver module connects, and the outfan of described second photomodulator is connected with described second video processing module.
Distance video monitoring system based on laser chaos the most according to claim 1, it is characterised in that:
Described second video processing module includes:
Second transform subblock, described second transform subblock is for being converted to the signal of telecommunication by described 4th video signal；
Signal amplifies submodule, and described signal amplifies submodule to be put for the 4th video signal after conversion is carried out signal
Greatly；
Decoding sub-module, the described decoding sub-module the 4th decoding video signal after signal is amplified；
Decompression module, described decompression module is for decompressing decoded 4th video signal；
Combination submodule, described combination submodule is used for being combined the 4th video signal after described decompression, shape
Become the 5th video signal.
Distance video monitoring system based on laser chaos the most according to claim 1, it is characterised in that: institute
Stating client and be additionally provided with channel switching module, described channel switching module is connected with described watch-dog, and described passage is cut
Multiple photographic head are freely switched by die change block for watch-dog, obtain the video information of multiple control points in real time.
Distance video monitoring system based on laser chaos the most according to claim 1, it is characterised in that: institute
State signal transmitting module and described signal receiving module uses fiber optic communication mode.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109451281A (en) * | 2018-12-20 | 2019-03-08 | 西南大学 | A kind of video monitoring system of high confidentiality |
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| US20150139420A1 (en) * | 2013-10-10 | 2015-05-21 | Stmicroelectronics (Grenoble 2) Sas | Serial transmission having a low level EMI |
| CN105553571A (en) * | 2016-02-24 | 2016-05-04 | 西南大学 | Long distance bi-directional video secure communication device based on laser chaos |
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2016
- 2016-05-27 CN CN201610370164.2A patent/CN105915854A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150139420A1 (en) * | 2013-10-10 | 2015-05-21 | Stmicroelectronics (Grenoble 2) Sas | Serial transmission having a low level EMI |
| CN105553571A (en) * | 2016-02-24 | 2016-05-04 | 西南大学 | Long distance bi-directional video secure communication device based on laser chaos |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109451281A (en) * | 2018-12-20 | 2019-03-08 | 西南大学 | A kind of video monitoring system of high confidentiality |
| CN109451281B (en) * | 2018-12-20 | 2020-09-22 | 西南大学 | Video monitoring system |
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