CN100452872C - Embedded type network video monitor and control system - Google Patents
Embedded type network video monitor and control system Download PDFInfo
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- CN100452872C CN100452872C CNB2006100865670A CN200610086567A CN100452872C CN 100452872 C CN100452872 C CN 100452872C CN B2006100865670 A CNB2006100865670 A CN B2006100865670A CN 200610086567 A CN200610086567 A CN 200610086567A CN 100452872 C CN100452872 C CN 100452872C
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Abstract
The present invention discloses an embedded type network video monitoring system to solve many technological difficult problems in video monitoring engineering, and the application problems comprises imagine dis-tortionless distant transmission, image real time requirements, image compressed encoding, etc.; the present invention meets the requirement of equipment simplification, rapid network assembly and cost saving in the engineering so that enterprises conveniently and rapidly complete the installation and the practice of the video monitoring system in the video monitoring engineering. The embedded type network video monitoring system of the present invention comprises monitoring head end equipment used for collecting video image signals within a monitoring range and processing the image data signals into the image data signals which are suitable for data network transmission, a data network used for transmitting the image data signals to a monitoring center, and the monitoring center receiving the image data signals transmitted from the data network and then transmitting to relevant monitoring terminals.
Description
Technical field
The present invention relates to a kind of supervisory control system, particularly relate to a kind of embedded type network video monitor and control system of implementing monitoring via network remote.
Background technology
Picture control is one of application technology focus of paying close attention to of people always, it is directly perceived with it, convenient, the information content is abundant and be widely used in many occasions. in electronic technology and development of Communication Technique process, the technical merit of frequency image monitoring system, the technology status that has directly reflected different phase electronics and communication with regard to the mode of picture control, is broadly divided into three classes:
1) analog local signal supervisory control system
Local frequency image monitoring system mainly is made up of video camera, video matrix, monitor, video tape recorder etc., utilize analog video line to be connected to from the video of video camera on the monitor, utilize the video matrix main frame, the employing keyboard switches and controls, and video recording adopts the time lapse VTR that uses tape; Analog optical fiber is adopted in remote picture transmission, utilizes optical transceiver to carry out the transmission of video.
Traditional simulation closed-circuit TV monitoring system has a lot of limitation: at first, the transmission of wired analog video signal is adjusted the distance very responsive; Secondly, wired analog video monitoring can't be networked, can only be with point-to-point mode on-site supervision, and make that the wiring installation amount is very big; In addition, the storage of wired analog video data signal can expend a large amount of storage medium (as video tape), and is very loaded down with trivial details during the inquiry evidence obtaining.
2) based on the digital monitor system of PC card
Inserting video card based on the remote image monitoring system of PC by PC constitutes, on-the-spot in monitoring, several video cameras are arranged, various detections, alarm probe and data equipment, by transmission line separately, tandem is to the monitor terminal machine, and this terminal can be a PC, also can be special-purpose industrial cabinet.
Video monitoring system termination function based on PC is stronger, is convenient to execute-in-place.But stability is bad, and video front (as collection of video signal such as CCD, compression, communication) is comparatively complicated, and reliability is not high, and PC also needs the personal management, and particularly in the unfavorable control point of environment or space, this mode is undesirable.
3) based on the network digital supervisory control system of embedded technology
Do not need the PC of treatment of simulated vision signal based on the supervisory control system of embedded technology, but the analog video signal of video camera output is directly changed into the IP digital signal by the embedded video encoder.The embedded video encoder possesses powers such as video coding processing, network service, automatic control, and directly network enabled video transmission and network management makes monitoring range reach unprecedented range.Except encoder, also have independently hardware module such as embedded decoder, controller, video recording server, they can be installed separately, and devices from different manufacturers can realize interconnection.
The advantage of digitized video monitoring is the limitation that has overcome the simulation cctv surveillance: at first, digitized video can go up transmit image data at computer network (local area network (LAN) or wide area network), basically be not subjected to distance limit, signal is not subject to disturb, and can increase substantially image quality and stability; Secondly, digital video can be utilized the computer network networking, and network bandwidth reusable need not repeat wiring; In addition, digitlization storage becomes possibility, can be stored in the disk array or is kept in the CD through the video data of overcompression, inquires about very simple and efficient.
Advantage based on the supervisory control system of embedded device is: since the hardware of this system be one with processor and operating system binding comparatively closely, single-minded, the custom-designed separate equipment of function, unlike the plug-in card system, be subjected to the influence of other hardware and software in the general-purpose computing system, therefore more stable on the performance, and be convenient to install, safeguard, be easy to the modularized design of the system that realizes, be convenient to management, safeguard.
The present invention has taken into full account the above-mentioned state of the art, has proposed a kind of embedded type network video monitor and control system that adapts to development trend, and this development trend is:
In monitoring application structure based on embedded system, front end adopts analog video camera, pass through network video coder, analog video is become the video flowing of agreement Network Based or adopts incorporate web camera through processes such as digitlization, compression, packings, finish networking, digitlization at the front end of video monitoring, video flowing transmits by network, sends to video requirement person.The user of video can utilize software to decode, on PC, show and handle, also can decode by hardware, solve analog video signal and output to monitor, utilize keyboard to control, utilization is distributed in server on the network or the network storage equipment of other types is recorded a video as required, utilizes network management system to replace video matrix.Because do not have the notion of Surveillance center, the user of any mandate can carry out video monitoring, video recording according to authority.
In addition along with the development of built-in monitor system, the user who disposes monitor and control facility has begun the notion of monitoring progressively extended from single video monitoring and has developed into multi-functional monitoring.This multi-functional monitoring has comprised monitoring, transmission and the network management of the signal that various sensor acquisition are arrived.And these multi-functional watch-dogs that can network management also must be based on built-in monitor system.
Summary of the invention
The purpose of this invention is to provide a kind of embedded type network video monitor and control system, be used for solving many technical barriers in the video monitoring engineering, the undistorted long Distance Transmission that comprises image, the real-time requirement of image, application problem and the device simpleizations in engineering such as the compressed encoding of image, the requirement of rapidization of networking and cost savingsization makes enterprise conveniently finish the installation and the enforcement of video monitoring system in the video monitoring engineering, and reaches higher technical indicator.Further stretch system function on the research and development basis of embedded type network video monitor and control system simultaneously, make its can satisfy engineering use in other types monitored item purpose integrated.
Realize the embedded type network video monitor and control system of above-mentioned purpose of the present invention, comprising:
The monitoring frontend local area network (LAN) is formed local area network (LAN) on a small scale by interchanger/ethernet concentrator with many monitoring frontends, so that the video data signal that each monitoring frontend is obtained after gathering and handling is sent to wide area network;
Realize the wide area network of video data signal network service, be used for described video data signal is sent to the video monitoring system server of Surveillance center's local area network (LAN);
Surveillance center's local area network (LAN), by interchanger/ethernet concentrator described video monitoring system server, many monitor terminals or user terminal are formed the office local area network (LAN), and the video monitoring system server is transmitted to corresponding monitor terminal or user terminal to the video data signal of receiving.
The embedded type network video monitor and control system of said structure can be born 2 aspect tasks:
The first, from the angle of safety precaution, ensure the building in the monitoring range, the safety of equipment, antitheft, fire prevention.
The second, the normal operation of support equipment, the warning video recording of accident, the acoustic image communication of accident and main website etc.
Wherein, described monitoring frontend comprises: the video camera of ambient image in the real time shooting monitoring range; The embedded video encoder, the analog video signal that video camera is obtained is processed into the video data signal that is suitable for Network Transmission.
Wherein, described monitoring frontend also comprises the The Cloud Terrace lens controller, is used to receive the control command that described video monitoring system server transmits via wide area network, and rotates and regulate the camera lens focal length according to described control command control camera pan-tilt.
Wherein, described embedded video encoder comprises: the video acquisition processing module is used to gather the composite video signal from the video camera input, and converts thereof into digital video signal; The digital image compression coding module is used for the digital video signal compressed encoding from the input of video acquisition processing module is become video data signal; The Network adaptation sending module is used for the video data signal from digital image compression coding module input is processed into and is suitable for transmitting at corresponding network.
Like this, on the mode of the digital coding of having compressed being carried out the network transmission, add for example network transceiving module of expansion such as wireless network, optical-fiber network, to satisfy different application scenarios.
Wherein, described video data signal is sent to described video server by the network addressing mode in wide area network.
Wherein, described video monitoring system server is configured to, receive the video data signal that transmits via wide area network from all headend equipments of described monitoring frontend local area network (LAN) simultaneously, packet configuration according to video camera is combined into single width or some divided frame moving frames, and on image stack time, place and name data.Thereby, embedded type network video monitoring warning deploy troops on garrison duty figure made visual, exercisable Multimedia Electronic Map, visual in image, come into plain view.Native system can also be with sound, video switch technology and sound, and video processing technique is combination well, has realized the multimedia monitoring management of real meaning.
Wherein, described video monitoring system server also has authentification of user mechanism, so that when receiving user applies, whether ruling transmits view data according to user's rights of using.
Wherein, described wide area network is IP network or SDH network.Owing to realize the Optical Fiber Transmission of image through the vision signal behind the compressed encoding by switch of concentrating in the SDH network and optical transmission module, thereby guaranteed speed and picture quality.
In addition, can also be outside the main functionality of embedded system, exploitation is applicable to the standard interface of multiple watch-dog, the unified network management by Surveillance center at last manages and controls all watch-dogs in the engineering.
Embedded video supervisory control system of the present invention can be widely used in the supervision control engineering.Owing to adopted embedded system technology will make that watch-dog develops to miniaturization, project installation will be easier; Adopt high efficiency encoding compression technology to add the utilization of fiber optic transmission system, the quality and the real-time of extensible monitoring distance and assurance image.
In addition, embedded video supervisory control system of the present invention can improve the equipment of corporation monitoring project, avoids buying the expensive expense safety management cost of each monitor component on the market, reduces engineering cost greatly, increases work efficiency.Behind the engineering construction, can satisfy user's monitoring safety to greatest extent, and can be according to customized other monitoring projects of customer requirements.
The present invention can satisfy the needs of a plurality of industry news speed development, for example in application in engineering such as railway, intelligent transportation, electric power, intelligent buildings.Accelerate unattended operation, improve the management modernization level.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is an embedded type network video monitor and control system theory diagram of the present invention;
Fig. 2 shows the image transmission means based on wideband IP network of embedded type network video monitor and control system of the present invention;
Fig. 3 shows the E1 special line image transmission means based on the SDH net of embedded type network video monitor and control system of the present invention;
Fig. 4 is the hardware block diagram of the embedded video codec of headend equipment of the present invention.
Embodiment
The present invention is a kind of network digital monitoring substantially, by the analog picture signal of camera picked-up is converted to data image signal, again by the computer network transmission, makes the computer in the network all become monitor terminal, is not subjected to the restriction of territorial environment.Because native system adopts the Network Transmission of computer, when implementing monitoring, need not again cloth for the mansion of finishing comprehensive wiring expensive client cables is set, really accomplished two net and nets.In addition, the TCP/IP procotol of standard has been adopted in the signal transmission, and remote monitoring may have been become.
Referring to embedded type network video monitor and control system theory diagram of the present invention shown in Figure 1, embedded type network video monitor and control system of the present invention comprises substantially:
Monitoring frontend is used to gather the video signal of institute's monitoring range, and it is processed into is fit to data network image transmitted data-signal;
Data network is used for described viewdata signal is sent to Surveillance center;
Surveillance center receives the described viewdata signal that transmits via data network, is transmitted to corresponding monitor terminal then.
As can be seen from Figure 1, monitoring frontend comprises: the video camera of ambient image in the real time shooting monitoring range, and this video camera is exported corresponding AV signal; The embedded video encoder, the analog video signal that video camera is obtained is processed into the video data signal that is suitable for Network Transmission.
In addition, those skilled in the art will be appreciated that, described monitoring frontend should comprise The Cloud Terrace lens controller (not shown), this The Cloud Terrace lens controller receives the control command of the terminal monitor of Surveillance center via the network transmission, and rotate and regulate the camera lens focal length, thereby realized Long-distance Control via network according to described control command control camera pan-tilt.
Described embedded video encoder comprises: the video acquisition processing module is used to gather the composite video signal (analog video signal) from the video camera input, and converts thereof into digital video signal; The digital image compression coding module is used for the digital video signal compressed encoding from the input of video acquisition processing module is become video data signal; The Network adaptation sending module is used for the video data signal from digital image compression coding module input is processed into and is suitable for transmitting at corresponding network.
Surveillance center of the present invention comprises a plurality of terminal monitors.
On the other hand, the present invention can also realize the embedded type network video monitoring by forming monitoring frontend local area network (LAN) and two local area network (LAN)s of Surveillance center's local area network (LAN).Such embedded type network video monitor and control system such as Fig. 2, shown in Figure 3 comprise:
The monitoring frontend local area network (LAN) is formed local area network (LAN) on a small scale by interchanger/ethernet concentrator with many monitoring frontends, so that the video data signal that each monitoring frontend is obtained after gathering and handling is sent to wide area network;
Realize the wide area network of video data signal network service, be used for described video data signal is sent to the video monitoring system server of Surveillance center's local area network (LAN);
Surveillance center's local area network (LAN), by interchanger/ethernet concentrator described video monitoring system server, many monitor terminals or user terminal are formed the office local area network (LAN), and the video monitoring system server is transmitted to corresponding monitor terminal or user terminal to the video data signal of receiving.
The monitoring frontend of this embedded type network video monitor and control system comprises equally: the video camera of ambient image in the real time shooting monitoring range; The embedded video encoder, the analog video signal that video camera is obtained is processed into the video data signal that is suitable for Network Transmission.
Described monitoring frontend also comprises the The Cloud Terrace lens controller, is used to receive the control command that described video monitoring system server transmits via wide area network, and rotates and regulate the camera lens focal length according to described control command control camera pan-tilt.
Described embedded video encoder comprises: the video acquisition processing module is used to gather the composite video signal from the video camera input, and converts thereof into digital video signal; The digital image compression coding module is used for the digital video signal compressed encoding from the input of video acquisition processing module is become video data signal; The Network adaptation sending module is used for the video data signal from digital image compression coding module input is processed into and is suitable for transmitting at corresponding network.
Like this, on the mode of the digital coding of having compressed being carried out the network transmission, add for example network transceiving module of expansion such as wireless network, optical-fiber network, to satisfy different application scenarios.
Described video data signal is sent to described video server by the network addressing mode in wide area network.
Wherein, described video monitoring system server is configured to, receive the video data signal that transmits via wide area network from all headend equipments of described monitoring frontend local area network (LAN) simultaneously, packet configuration according to video camera is combined into single width or some divided frame moving frames, and on image stack time, place and name data.
Wherein, described video monitoring system server also has authentification of user mechanism, so that when receiving user applies, whether ruling transmits view data according to user's rights of using.
Wherein, described wide area network is IP network or SDH network.
Describe concrete mode and the details that realizes invention in detail below in conjunction with Fig. 1 to Fig. 4.
The present invention is divided into front monitoring front-end, communication network, three major parts of Surveillance center according to networking mode, now, is illustrated respectively.
1. front monitoring front-end
Front monitoring front-end mainly is made up of capital equipments such as front end embedded video codec (containing the alarm linkage controller), gamma camera (protective cover, gamma camera, camera lens, support), front end monitoring host computers.Mainly finish collection, coding and the transmission of image, the control of gamma camera and the I/O work of warning.Front monitoring front-end is to undertake the data acquisition of frequency image monitoring system and the operating part of control command, is one of whole system important composition one's duty.It has following specification requirement and characteristics:
Advanced technology, powerful, meet international standard and future thrust;
The equipment low-power consumption, stable and reliable operation simultaneously;
Equipment is exempted from operation, non-maintaining;
Equipment anti-adverse environment (electromagnetic interference, harsh weather).
(1) front end Video Codec
The front end Video Codec will be the emphasis of this project research and development.Adopt the embedded type network video codec, one of its significant advantage is that operating system is the real-time multi-task technical grade product, and it is platform at present with the microcomputer that reliability, stability are much higher than, and WINDOWS is the picture system of operating system.And the volume compact, powerful, be convenient to install and and remote centralized management and setting.It possesses 4 video inputs mouths Preliminary design, can connect 4 gamma cameras.Simultaneously, possess 4 report to the police input and interlock output interfaces, can connect warning device easily.
(2) gamma camera (The Cloud Terrace, protective cover, gamma camera, camera lens, support)
The selection of gamma camera need be selected for use according to on-site supervision distance and monitoring range and be focused gamma camera accordingly and adopt as video capture device, simultaneously, uses indoor or outdoor protective cover
Protect gamma camera, reach the purpose of waterproof and dustproof.Can select dissimilar video cameras according to the different situations user:
Fixed cameras: be applicable to the situation of fixed surveillance object, can be equipped with different manual or automatic diaphragm lens according to actual conditions.Must adjust suitable direction and focal length when video camera is installed, reach the clear picture that monitors the emphasis position, uncontrolled at ordinary times.
The band cloud Daepori leads to video camera: high-definition camera disposes three variable lenses or selects for use the video camera of camera lens disjunctor to be installed on the electric platform, can be at any time adjust and select monitored object by the upper and lower, left and right rotation of control The Cloud Terrace, the change of controls lens doubly, zoom, change aperture.
Integration spherical video camera: the small and exquisite exquisiteness of profile, function admirable.It has the required picture rich in detail of industrial use, advanced Digital Signal Processing and continuous autofocus function.There are 64 to pre-set, can locate automatically.
(3) The Cloud Terrace lens controller
The The Cloud Terrace lens controller provides working power for The Cloud Terrace and video camera, receives the control command of picture control main frame, and actions such as lens focus are rotated and regulated in control The Cloud Terrace upper and lower, left and right.The The Cloud Terrace lens controller has two relay switches, can insert alarm linkage equipment.
2. network communication
In embedded type network video monitor and control system, will support two kinds of networking modes under the passage:
(1) based on the image transmission means of wideband IP network
Many remote monitoring front ends can pass through switch/ethernet concentrator and form a local area network (LAN) on a small scale, can use router to connect between local area network (LAN) and the wide area network, by the setting of video server gateway address, guarantee that video Data Transmission is to Surveillance center.The client microcomputer of Surveillance center, video monitoring server and office microcomputer can pass through switch/ethernet concentrator (not shown) and form the office local area network (LAN), router and wide area network interconnection, by setting to Surveillance center, front monitoring front-end router, can realize network interworking, guarantee remote data transmission.
(2) based on the E1 special line image transmission means of SDH (synchronous digital hierarchy) net
The user with based on SDH net E1 is provided passage, at present, optical transceiver can provide two kinds of interfaces: G.703 interface and 10base-T Ethernet interface.
If optical transceiver provides G.703 interface, G.703-10BASE-T ethernet bridging device (bridge) can be installed, change into the RJ-45 interface, getting final product by switch composition local area network (LAN) installation AXIS video server.If optical transceiver can provide the 10base-T Ethernet interface, can directly be connected on the switch.
Surveillance center inserts Surveillance center's local area network (LAN) by optical transceiver.The client microcomputer of Surveillance center, video monitoring server and office microcomputer can pass through switch/ethernet concentrator and form the office local area network (LAN), in this locality remote scene are monitored.
Network hardware equipment adopts advanced equipment, guarantees to stablize, reliable and safety, has strong anti-interference ability.All can not influence the operational mode of watch-dog when normal maintenance of system and operation maintenance, promptly accomplish not equipment such as interruption maintenance probe.Network configuration is with good expansibility, and can increase configuration neatly according to needs in the future.Network provides general-purpose interface, when system expands, only needs direct interpolation equipment to get final product, and can link to each other with existing equipment easily, avoids the wasting of resources.
3. Surveillance center
Surveillance center mainly is made up of frequency image monitoring system server, monitoring client terminal etc.Mainly finish image scene and receive user login management, the distribution of priority, the coordination of control signal etc.Surveillance center is a maincenter part of finishing whole system, is bearing the interface task with user and headend equipment, and it has following specification requirement and characteristics:
Powerful, can manage dozens of front end system (substation) and dozens of or even up to a hundred online users simultaneously, in following front end system adjustment or when increasing number, need not be to increasing hardware device, or system is changed, increase fund input;
Receive, satisfy all online clients' forwarding application in the time of dozens of motion video image;
Perfect authentification of user mechanism (user name, password, front end system password, priority) mechanism;
The powerful center coordination system (application, concurrent control coordination etc. are transmitted, recorded to concurrent application, image);
Advanced software platform, conformance with standard and following direction;
(1) frequency image monitoring system server
By the top-grade computer server, WINDOWS NT/2000, SQL Server database server
The Active Eyes server software is formed.Mainly finish following work:
● multiway images receives, handles, shows:
Receive the image of all front end systems simultaneously, be combined into according to the packet configuration of gamma camera that single width or 4 is cut apart, 9 divided frame moving frames, simultaneously stack time, place name on image.After the application of receiving the user, whether ruling transmits image according to authority; Can regulate visual display size according to the number of shots in the monitoring place, select any one road image can expand full screen display to, show real-time picture, range up to 30 frame per seconds.The Standard of image compression that system adopts is MPEG4, and the image formats stored is MPEG4, and the image definition height meets international standard fully.A plurality of users can monitor a gamma camera simultaneously.
The realization of nucleus module
Function and the module that to mainly introduce front end embedded video codec main in the embedded type network video monitor and control system below constitute.
This module comprises the two large divisions: image processing module and Netcontroller module.System block diagram is seen Fig. 4.Be responsible for image is gathered and compressed by image processing module, earlier analog picture signal be transformed into the digital signal of yuv format, carry out image compression encoding by dsp chip according to mpeg 4 standard then.The Netcontroller module is that physical layer is packed the compressing image data that receives by ICP/IP protocol, is sent on the computer of the Internet, and the control command that transmits of receiving computer, system is configured.Below introduce the operation principle and the software design approach of each module respectively.
(1) chip introduction
Image collection chip adopts the SAA7115 of PHILIPS company.The composite video signal of importing from the analog video input port is after SAA 7115 inner process clampers, anti-aliasing filter, A/D conversion, YUV split circuit, convert the BT.656 video data stream at YUV (i.e. 3DRAM among the figure) in the change-over circuit of YCrCb, be input among the compressed core cells D M642.3 video port VP0, VP1, VP2 and the coding and decoding video chip of DM642 join.
Image compression chip adopts the TMS320DM642 fixed-point calculation digital signal processor (DSP) of TI company, and it is inner to adopt a kind of follow-on Harvard bus structures (program bus, three data/address buss), and data-bus width is 128bit.The data separately and the instruction space make this chip have the parallel work-flow ability of height, allow instruction and data access simultaneously in the monocycle, add the instruction set of its height optimization, make this chip have very high arithmetic speed, reach as high as 4800MIPS.
The TMS320DM642 of TI company (hereinafter to be referred as DM642) is a special special DSP towards multimedia application.This DSP clock is up to 600MHz, 8 concurrent operation unit, and disposal ability reaches 4800MIPS; Adopt the L2 cache structure; Have 64 external memorizer interfaces; Compatible IEEE-1149.1 (JTAG) boundary scan; In order to use towards the multimedia body, also integrated 3 configurable video ports, McASP (MultiChannel Audio Serial Port), the peripheral hardwares such as ethernet mac of 10/100Mb/s towards voice applications.Image processing module mainly is responsible for work such as the collection, digitlization, compression of analog image.At first, after system power-up operation,, will be stored in application copy on the external program memory in internal storage by the BootLoader program, and the application program that brings into operation.
2. control module
The control module (not shown) adopts the RS-485 interface circuit, and two ends connect DM642 and cradle head control device respectively.This interface is connected to the The Cloud Terrace of video camera, is used for controlling the rotation of The Cloud Terrace, adjusts the direction and the position of camera.RS-485 bus antijamming capability is strong, can realize the multi-site telecommunication.
3. software
Object-based coding standard MPEG-4 of a new generation and traditional MPEG-1, MPEG-2 and H.263 compare, it all has huge advantage in interactivity, anti-error code and efficient compression.Aspect interactivity, the coding that is based on object that MPEG-4 adopts is convenient to operation and controlling object; Aspect anti-error code, MPEG-4 provides robustness and extensibility, and its error code recovery technology (comprise synchronous, data are recovered and error concealing again) is all optimized; Aspect efficient compression,, make and in cataloged procedure, can consider the optic nerve characteristic of people the subjective feeling and the human eye of image information owing to adopted object-based coded system.This distributes more code check just can for the interested object of people, and some feel that such as people such as backgrounds slow object distributes less code check, thereby improves compression ratio greatly.
Network Transmission adopts RTP/RTCP agreement and multicast mode, can guarantee the quality that transmits like this.Aspect operating system, adopt TI frame of reference 5 (RF5) based on DSP/BIOS.Application program module based on RF5 operating system mainly comprises: audio-video collection module, compressed encoding module, UART control module and network transmission module.
Claims (10)
1. embedded type network video monitor and control system comprises:
Monitoring frontend is used to utilize the video signal of camera acquisition institute monitoring range, convert thereof into digital video signal after, be processed into the viewdata signal that is fit to IP network or SDH Network Transmission again;
IP network or SDH network are used for described viewdata signal is sent to Surveillance center;
The Surveillance center that connects described IP network or SDH network, comprise frequency image monitoring system server and monitoring client terminal, be used to receive the described viewdata signal that transmits via data network, give corresponding monitoring client terminal by described frequency image monitoring system server forwards then, wherein said frequency image monitoring system server is when receiving the request of monitoring client terminal, and whether ruling transmits view data according to user's rights of using.
2. embedded type network video monitor and control system comprises:
The monitoring frontend local area network (LAN), by interchanger/ethernet concentrator many monitoring frontends are formed local area network (LAN) on a small scale, described each monitoring frontend is through utilizing the camera acquisition video signal, after converting thereof into digital video signal, be processed into suitable wide area network image transmitted data-signal again;
Realize the wide area network of video data signal network service, be used for described video data signal is sent to the video monitoring system server of Surveillance center's local area network (LAN);
The Surveillance center's local area network (LAN) that connects described wide area network, comprise frequency image monitoring system server and monitoring client terminal, by interchanger/ethernet concentrator described video monitoring system server, many monitor terminals or user terminal are formed the office local area network (LAN), and the video monitoring system server is transmitted to corresponding monitor terminal or user terminal to the video data signal of receiving, wherein said frequency image monitoring system server is when receiving the request of monitoring client terminal, and whether ruling transmits view data according to user's rights of using.
3. embedded type network video monitor and control system according to claim 2, wherein, described monitoring frontend comprises:
The described video camera of ambient image in the real time shooting monitoring range;
The embedded video encoder, the analog video signal that video camera is obtained is processed into the video data signal that is suitable for Network Transmission;
4. embedded type network video monitor and control system according to claim 3, wherein, described monitoring frontend also comprises the The Cloud Terrace lens controller, be used to receive the control command that described video monitoring system server transmits via wide area network, and rotate and regulate the camera lens focal length according to described control command control camera pan-tilt.
5. embedded type network video monitor and control system according to claim 3, wherein said embedded video encoder comprises:
The video acquisition processing module is used to gather the composite video signal from the video camera input, and converts thereof into digital video signal;
The digital image compression coding module is used for the digital video signal compressed encoding from the input of video acquisition processing module is become video data signal;
The Network adaptation sending module is used for the video data signal from digital image compression coding module input is processed into and is suitable for transmitting at corresponding network.
6. embedded type network video monitor and control system according to claim 2, wherein, described video data signal is sent to described video server by the network addressing mode in wide area network.
7. embedded type network video monitor and control system according to claim 2, wherein, described video monitoring system server is configured to, receive the video data signal that transmits via wide area network from all headend equipments of described monitoring frontend local area network (LAN) simultaneously, packet configuration according to video camera is combined into single width or some divided frame moving frames, and on image stack time, place and name data.
8. embedded type network video monitor and control system according to claim 7, wherein, described video monitoring system server also has authentification of user mechanism, so that when receiving user applies, whether ruling transmits view data according to user's rights of using.
9. embedded type network video monitor and control system according to claim 2, wherein, described wide area network is an IP network.
10. embedded type network video monitor and control system according to claim 2, wherein, described wide area network is the SDH network.
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