CN203645769U - High definition digital video monitoring device based on optical fiber network - Google Patents
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Abstract
The utility model discloses a high definition digital video monitoring device based on an optical fiber network comprising an optical access subsystem, a decoding subsystem, a high speed switching subsystem, and an output system. A front-end camera is connected with the optical access subsystem by the optical fiber. The input end of the decoding subsystem is connected with the first output end of the optical access subsystem, and the output end of the decoding subsystem is connected with the first input end of the high speed switching subsystem. The second output end of the optical access subsystem is connected with the second input end of the high speed switching subsystem, and the output end of the high speed switching subsystem is connected with the output system. The front-end camera adopts an EPON camera, an optical fiber self-healing ring network camera, and an optical fiber HD-SD camera. The cameras are directly connected with the VAR3S digital video comprehensive management platform (hereafter referred to as VAR3S) by the optical fibers, and the VAR3S can be used for unified decoding, real-time publishing, and networking uploading.
Description
Technical field
The utility model relates to the optical fiber data transferring technology of data communication field and the camcorder technology of field of video monitoring, relates in particular to the high-definition digital video supervising device based on fiber optic network.
Background technology
Along with the development of broadband services, the off-capacity of existing metropolitan area network, Access Network.For operator, the most basic and actual effectively way is to metropolitan area network and Access Network dilatation.
Fiber optic network has very significantly advantage in this respect:
(1) capacity is large: the operating frequency that the current cable of fiber work frequency ratio uses exceeds 8--9 the order of magnitude, therefore the capacity of developing is large;
(2) decay little: every kilometer of decay of communication coaxial cable of the current capacity maximum of every kilometer of attenuation ratio of optical fiber will be low one more than the order of magnitude;
(3) body is light in a small amount: be conducive to construction and transport;
(4) anti-tampering performance is good: optical fiber not disturbed by forceful electric power interference, electric signal and thunder and lightning disturbs, and electromagnetic pulse-resisting ability is also very strong, good confidentiality;
(5) save non-ferrous metal: general telecommunication cable will consume the non-ferrous metals such as a large amount of copper, lead or aluminium.Optical fiber itself is nonmetal, and the development of optical fiber communication will be saved a large amount of non-ferrous metals for country.
(6) dilatation is convenient: the standard fiber special line that bandwidth is 2Mbps is easy to just can be upgraded to even G bandwidth of 4M, 10M, 20M, 100M.
(7) up-downgoing symmetry: fiber medium is different from the descending large up little drawback of the Telephone Cable medium of traditional adsl, can realize up-downgoing symmetry.
Therefore existing network being escalated into fiber optic network is on a large scale imperative thing.Video surveillance network, as a kind of application mode of network, certainly will also will change.If still adopt traditional interface, the interconnecting device in the middle of will constantly increasing, makes more and more bulky complex of whole system, is unfavorable for the transmission of image and final quality.Chinese patent ZL200720106007.7 discloses digital video integrated multi-service transmission switching platform, and it cannot support high definition without compression, clog-free real-time Transmission; Cannot support absolute altitude to mix clearly input, not support IPC access and cannot realize the self-networking of equipment topology.
Utility model content
For addressing the aforementioned drawbacks, the utility model proposes the high-definition digital video supervising device based on fiber optic network, native system has replaced numerous equipment such as traditional optical transmitter and receiver+video distributor+analog matrix+codec+video synthesis management software+optical transmitter and receiver webmastering software, simplify system, strengthened the performance index of system and the maintainability of system.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows:
High-definition digital video supervising device based on fiber optic network, comprise light access subsystem, decoding subsystem, high speed switching subsystem and output system, front end video camera connects light access subsystem by optical fiber, the input of described decoding subsystem connects the first output of light access subsystem, the output of decoding subsystem connects the first input end of high speed switching subsystem, the second output of described smooth access subsystem connects the second input of high speed switching subsystem, and described high speed switching subsystem output connects output system.
Further, described output system comprises large-size screen monitors control system and networking subsystem, described large-size screen monitors control system is for directly to show vision signal, and described networking subsystem is used for the input of the light access subsystem that is connected in series another high-definition digital video supervising device based on fiber optic network.
Further, described smooth access subsystem comprises IPC access card, described IPC access card is provided with the SFP light input of 16 passages, described IPC access card is provided with FPGA, this FPGA realizes the parsing of the SFP light input to 16 passages, as sdi signal transferred to high speed switching subsystem for being resolved to sdi signal, as be IPC signal, it pooled to 1 road gigabit networking output by RM II interface chip.
Further, described video monitoring apparatus is also provided with id information, and described id information comprises the identifying information of this video monitoring apparatus equipment, in the time of described video monitoring apparatus serial connection networking, can utilize this id information to build the equipment topology of video monitoring system.
High-definition digital video method for supervising based on fiber optic network, comprises the steps:
When preposition video camera is IP+SDI video camera, the transducer of video camera collects video data, by built-in FPGA, this video data is done to image processing, then give IP coding module through coding module H.264, thereby output 100,000,000 network datas, these data return to FPGA, in FPGA inside, it is encoded together with sdi signal, video monitoring apparatus receives after data, by FPGA resolution data, the SDI data that parse are directly gone the exchange of high speed switching subsystem and the logical SDI output of ring, the H.264IP data that parse utilize decoding subsystem to decode, then enter the exchange of high speed switching subsystem and output to a RJ45 gigabit mouth.
High-definition digital video method for supervising based on fiber optic network, while comprising the steps: that preposition video camera is IP video camera, after the transducer of video camera collects video data, by FPGA, data are done to image processing, then give IP coding module through coding module H.264, thereby output 100,000,000 network datas, after receiving data, video monitoring apparatus receives after ip network number certificate, by decoding subsystem decoded ip, can export on Huan Tong mono-tunnel 100,000,000 simultaneously, then become unpacked data by decoder module H.264, finally do to be sent to high speed switching subsystem after relevant treatment by FPGA and exchange and encircle logical SDI output.
High-definition digital video method for supervising based on fiber optic network, while comprising the steps: that preposition video camera is SDI video camera, after the transducer of video camera collects video data, by FPGA, data are done to image processing, then directly parallel data is given to SDI coding module and produce SDI serial data, receive after SDI data at video monitoring apparatus, give SDI decoder module, then do to be sent to high speed switching subsystem after relevant treatment by FPGA and exchange and encircle logical SDI output.
The beneficial effects of the utility model are: front-end camera adopts EPON video camera, optical fiber self-healing looped network camera and optical fiber HD-SDI video camera.Video camera is directly linked into " VAR3S digital video comprehensive management platform " (hereinafter to be referred as VAR3S) by optical fiber, is carried out unified decoding, is gone up wall in real time and networking is uploaded by VAR3S.The access way of video camera is optional, can be point-to-point access, cascade access, looped network access, topological structure access arbitrarily: for example star topology.This device integrates high-definition digital video optical fiber transmission network and high-definition digital video matrix functions, integrates digital non-compression video and digital compression video; Both meet the demand of high definition, high realtime graphic, met again digitlization storage, IP network transmission requirement; Meet the optical fiber access module of point-to-point/cascade/self-healing looped network; Both meet the access of SD video, met again the access of 720P/1080I/1080P HD video; Both can front end compressed encoding, can concentrate compressed encoding in branch center/center again.
The inner Modular Structure Design that adopts of this device, is divided into (1) light access subsystem: the various optical access ports that possess point-to-point access, cascade access, looped network access, arbitrary topology access; (2) encoding and decoding subsystem: the signal that carries out compressed encoding is decoded, then enter the upper wall of switching subsystem exchange; (3) switching subsystem: the real-time exchange that completes high-speed data; (4) system control cpu: all subsystems in control system; (5) large-size screen monitors control subsystem: control from the switching of switching subsystem picture signal out, wall; (6) networking subsystem: monitor branch center and catch up with transmission module in the networking of one-level Surveillance center, upload picture signal to Surveillance center.
Brief description of the drawings
Fig. 1 is the system configuration schematic diagram of the high-definition digital screen supervising device of the utility model based on fiber optic network;
Fig. 2 is the practical application figure of the high-definition digital screen supervising device of the utility model based on fiber optic network;
Fig. 3 is the high-definition digital screen supervising device serial connection connection layout of the utility model based on fiber optic network;
Fig. 4 is front end while being IP signal, the internal process figure of the high-definition digital screen supervising device based on fiber optic network;
Fig. 5 is front end while being sdi signal, the internal process figure of the high-definition digital screen supervising device based on fiber optic network;
Fig. 6 is front end while being IP+SDI signal, the internal process figure of the high-definition digital screen supervising device based on fiber optic network.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
High-definition digital video supervising device based on fiber optic network of the present utility model is the system of VAR3S, as depicted in figs. 1 and 2, this system comprises light access subsystem, decoding subsystem, high speed switching subsystem and output system, front end video camera connects light access subsystem by optical fiber, the input of described decoding subsystem connects the first output of light access subsystem, the output of decoding subsystem connects the first input end of high speed switching subsystem, the second output of described smooth access subsystem connects the second input of high speed switching subsystem, described high speed switching subsystem output connects output system.
(1) light access subsystem: this system is provided with the various optical access ports of point-to-point access, cascade access, looped network access, arbitrary topology access.If front-end camera optical fiber HD-SDI video camera, adopts point-to-point access; If front-end camera is optical fiber self-healing looped network camera, adopt looped network mode to access; If front-end camera EPON video camera, adopts the access of arbitrary topology form, centre adds optical splitter.
(2) encoding and decoding subsystem: the signal that carries out compressed encoding is decoded, then enter the upper wall of high speed switching subsystem exchange.No matter which kind of access way, the signal transmitting can be divided into compressed signal with non-compressed signal, according to the interface difference of access light access subsystem, compressed signal is entered to encoding and decoding subsystem by light access subsystem decodes, decoding is entering high speed switching subsystem later, and non-compressed signal is directly entered to high speed switching subsystem.
(3) high speed switching subsystem: complete the real-time exchange of high-capacity and high-speed data, in the control work of system control cpu, other subsystems are all attached thereto.If what front end transmitted is non-compressed signal, directly enter this high speed switching subsystem by light access subsystem; If what front end transmitted is compressed signal, be introduced into encoding and decoding subsystem and decode, entering switching subsystem.
(4) system control cpu: all subsystems in control system.System control cpu major control switching subsystem carries out high speed switching signal.
(5) output system comprises large-size screen monitors control system and networking subsystem, large-size screen monitors control system: control from the switching of switching subsystem picture signal out, wall.From switching subsystem signal out, no matter be that decoded compressed signal is also that non-compressed signal enters large-size screen monitors control system, in unification, wall shows, specifically comprise and designed a DVI output card, this card has 4 DVI delivery outlets, each mouthful can corresponding at most 4 tunnel vision signals, this Cali carries out convergent-divergent with fpga chip to this 4 road video, after splicing is processed, can export a synthetic result road picture to DVI mouth also upper wall and show.
(6) networking subsystem: it is mainly used for being connected in series each video monitoring apparatus, wherein in each equipment, be provided with independently id information, this id information comprises that described id information comprises the identifying information of this video monitoring apparatus equipment, in the time of described video monitoring apparatus serial connection networking, can utilize this id information to build the equipment topology of video monitoring system, thereby realize the function that the networking of monitoring branch center and upper level Surveillance center is uploaded.
The equipment of monitoring branch center is mainly connected with front end Ge road video camera, and need to transfer the image of the key monitoring of all monitoring branch center under it in upper level Surveillance center.This function is realized by the subsystem of networking, and the monitoring networking subsystem of branch center and the networking subsystem of Surveillance center are connected, and can realize transferring and consult in real time of its high-definition image that descends all monitoring branch center in Surveillance center.If Fig. 2 is the practical application figure of the high-definition digital screen supervisory control system of the utility model based on fiber optic network.Figure has comprised the networking mode of whole system, its constitute and function is described as follows: front-end camera selects the mode of suitable access to access the video monitoring apparatus of monitoring branch center, video monitoring apparatus is to the signal processing of classifying, and on monitoring branch center, wall shows.By networking subsystem, key monitoring image uploading is arrived to upper level Surveillance center, in Surveillance center, wall shows simultaneously.
Video monitoring apparatus of the present utility model, use asic chip to decode to sdi signal at front end video camera, then by FPGA, parallel data serialization is converted to CML level, finally send to video monitoring apparatus of the present utility model by electrooptic conversion module, the whole process of front end is not compressed processing to data, so optical fiber forward speed has reached 1.485Gbps(for HD-SDI).Arrive after video monitoring apparatus, the HD-SDI vision signal signal that adopts FPGA to input in real time large capacity exchanges, and exports output card to, so ensured well video information primitiveness, authenticity.This mode without compression transmission exchange, and the powerful processing speed of FPGA makes transmission almost without any time delay, therefore supports high definition without compression, clog-free real-time Transmission.In addition, for optical sender, can access digital sdi signal, be converted to light and transfer to video monitoring apparatus, also can access the analog signals such as PAL, be converted to light and transfer to video monitoring apparatus, and be also like this for the local access card on matrix.Key is, the host-host protocol in light path is SDI agreement, can support to mix the settling mode of input by PAL being converted to SD-SDI.
For traditional video monitoring apparatus, mainly transmission is analog video, only has this kind of video format of PAL for domestic, i.e. 625i, so do not exist the problem of uniform format.And for the utility model, transmission be sdi signal, and SDI is divided into SD-SDI, HD-SDI, 3G-SDI, concrete form is as follows:
SD-SDI：576i50Hz,480i60Hz,
HD-SDI：720p50Hz,720p60Hz,
1080p24Hz,1080p25Hz,1080p30Hz,1080i50Hz,1080i60Hz，
3G-SDI：1080p50Hz,1080p60Hz
For so many video formats, can convert it to wherein a certain form by inner video format conversion module unification, for example can be unified into 1080p60Hz.This modular converter is completed by asic chip, as long as this chip is carried out to easy configuration realization.The format conversion that can certainly support as required the video of distinct interface, comprises VGA, DVI, and HDMI, the interfaces such as YPbPr are unified into a certain form of SDI.
The video monitoring apparatus of the utility model design can also be supported IPC access card, this IPC access card is arranged at light access subsystem, design an IPC access card, it has the SFP light input of 16 passages, the agreement of input signal is to utilize as required conventional agreement, also can define voluntarily as required, comprise the H.264 network data time slot of SDI video time slot and IPC etc., the FPGA of this card parses the data of this 16 passage, enter switching subsystem for sdi signal by backboard and carry out real-time exchange, 16 passages are pooled to 1 road gigabit networking output by RMII interface chip for IPC, for oppositely, by the passage reverse transfer of the transfer of data to 16 from gigabit networking mouth to front end.
As shown in Figure 3, be an embodiment of the utility model serial connection, local cabinet interconnect card, the output of each cabinet 16 road, cable is connected to the input card of the 5th cabinet, switches output a certain cabinet 16 road.
Flow process of the present utility model comprises: in the time of single business transmission, sdi signal can be realized to single fiber by coding and transfer to video monitoring apparatus matrix 16 passage light access cards of the present utility model, by high speed switching subsystem, to the back side 16 passage SDI output cards, the sdi signal of output turns wall on HDMI transducer through SDI and shows;
In the time that multi-service is transmitted, the supplementary services such as sdi signal and other Ethernets can be realized to single fiber by coding and transfer to video monitoring apparatus matrix 8 passage light access cards of the present utility model, exchange to the back side 8 passage SDI output cards by high speed switching subsystem, the sdi signal of output turns wall on HDMI transducer through SDI and shows; And 8 passages are inputted the Lower Half on light-cards, can export other supplementary services that parse, or input other business, be sent to and transfer to front end.
The most important thing is also to innovate and released optical fiber video camera, as shown above, remove SDI optical sender, to matrix light-receiving card, simplify the design of system by the direct output optical signal of camera, also reduce costs.The mentality of designing of this scheme is by SDI optical sender Miniaturization Design, and is integrated in SDI camera.
As shown in Figure 4, in the time that front end is IP signal, whole processing procedure is as described below: the first sensor(transducer of camera) collect video data after, by FPGA, data are done to image processing, then give IP coding module through coding module H.264, become 100,000,000 network datas.Receive after ip network number certificate at the light access subsystem of video monitoring apparatus of the present utility model, first decoded ip of decoding subsystem, can export on Huan Tong mono-tunnel 100,000,000 simultaneously, then become unpacked data by decoder module H.264, finally do to be sent to high speed switching subsystem after relevant treatment by FPGA and exchange and encircle logical SDI output.
As shown in Figure 5, in the time that front end is sdi signal, whole processing procedure is as described below: after first the sensor of camera collects video data, by FPGA, data are done to image processing, then directly parallel data is given to SDI coding module and produce SDI serial data, these data are directly walked optical module.At video monitoring apparatus, optical module receives after SDI data, gives the SDI decoder module of decoding subsystem, then does to be sent to backboard after relevant treatment by FPGA and exchanges and encircle logical SDI output.
As shown in Figure 6, in the time that front end is IP and sdi signal, whole processing procedure is as described below: after first the sensor of camera collects video data, by FPGA, data are done to image processing, then give IP coding module through coding module H.264, become 100,000,000 network datas, these data return to FPGA, in FPGA inside, it is encoded into together with sdi signal to certain agreement, this agreement can adopt conventional agreement, also can carry out as required self-defining.At video monitoring apparatus, receive after data, press protocol analysis data by FPGA, the SDI data that parse directly go the exchange of high speed switching subsystem and this snap ring to lead to, and the H.264IP data (totally 8 tunnels) that parse are entered the exchange of switch Switching Module and outputed to a RJ45 gigabit mouth.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, without departing from the concept of the premise utility; can also make some improvements and modifications, these improvements and modifications also should be considered as in the utility model protection range.
Claims (4)
1. the high-definition digital video supervising device based on fiber optic network, it is characterized in that, comprise light access subsystem, decoding subsystem, high speed switching subsystem and output system, front end video camera connects light access subsystem by optical fiber, the input of described decoding subsystem connects the first output of light access subsystem, the output of decoding subsystem connects the first input end of high speed switching subsystem, the second output of described smooth access subsystem connects the second input of high speed switching subsystem, and described high speed switching subsystem output connects output system.
2. the high-definition digital video supervising device based on fiber optic network according to claim 1, it is characterized in that, described output system comprises large-size screen monitors control system and networking subsystem, described large-size screen monitors control system is for directly to show vision signal, and described networking subsystem is used for the input of the light access subsystem that is connected in series another high-definition digital video supervising device based on fiber optic network.
3. the high-definition digital video supervising device based on fiber optic network according to claim 2, it is characterized in that, described smooth access subsystem comprises IPC access card, described IPC access card is provided with the SFP light input of 16 passages, described IPC access card is provided with FPGA, and this FPGA realizes the parsing of the SFP light input to 16 passages, as sdi signal transferred to high speed switching subsystem for being resolved to sdi signal, as be IPC signal, it is pooled to 1 road gigabit networking output by RM II interface chip.
4. the high-definition digital video supervising device based on fiber optic network according to claim 2, it is characterized in that, described video monitoring apparatus is also provided with id information, described id information comprises the identifying information of this video monitoring apparatus equipment, in the time of described video monitoring apparatus serial connection networking, can utilize this id information to build the equipment topology of video monitoring system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533310A (en) * | 2013-10-17 | 2014-01-22 | 杭州中威电子股份有限公司 | High-definition digital video monitoring system based on fiber-optic network and monitoring method |
| CN104717466A (en) * | 2015-02-09 | 2015-06-17 | 深圳市振华微电子有限公司 | HD-SDI video processing board based on FPGA |
| CN107645638A (en) * | 2017-09-22 | 2018-01-30 | 北京嗨动视觉科技有限公司 | Video processor and backplane communication method |
-
2013
- 2013-10-17 CN CN201320646705.1U patent/CN203645769U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533310A (en) * | 2013-10-17 | 2014-01-22 | 杭州中威电子股份有限公司 | High-definition digital video monitoring system based on fiber-optic network and monitoring method |
| CN104717466A (en) * | 2015-02-09 | 2015-06-17 | 深圳市振华微电子有限公司 | HD-SDI video processing board based on FPGA |
| CN104717466B (en) * | 2015-02-09 | 2018-09-21 | 深圳市振华微电子有限公司 | A kind of HD-SDI video processing boards based on FPGA |
| CN107645638A (en) * | 2017-09-22 | 2018-01-30 | 北京嗨动视觉科技有限公司 | Video processor and backplane communication method |
| CN107645638B (en) * | 2017-09-22 | 2019-10-11 | 北京嗨动视觉科技有限公司 | Video processor and backplane communication method |
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