CN204231546U - A kind of network carrying video monitoring system - Google Patents
A kind of network carrying video monitoring system Download PDFInfo
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- CN204231546U CN204231546U CN201420684687.0U CN201420684687U CN204231546U CN 204231546 U CN204231546 U CN 204231546U CN 201420684687 U CN201420684687 U CN 201420684687U CN 204231546 U CN204231546 U CN 204231546U
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Abstract
The utility model relates to communication system, disclose a kind of network carrying video monitoring system, described video monitoring system comprises L CCTV camera, and described network comprises: optical line terminal OLT and M multiuser residential unit MDU, described M be greater than 1 integer; A described L CCTV camera is corresponding with a described M MDU to be connected, and wherein, described L is the integer being greater than described M, and to be that multiple described CCTV camera is corresponding connect a described MDU for described CCTV camera and the corresponding relation of described MDU; Described MDU and described OLT communicates to connect, and the video information from described CCTV camera after convergence is sent to described OLT by described MDU.The intelligent acess technology that this network utilisation is point-to-multipoint, multiple some position, front end Optical Fiber Transmission is made to enter local police station's nucleus equipment by a small amount of backbone optical cable after convergence, thus greatly reduce laying of optical cable, save cost of investment, also for administering and maintaining from now on provides conveniently.
Description
Technical field
The utility model relates to a kind of network carrying video monitoring system.
Background technology
Now, video monitoring system plays a part more and more important to public security system clear up a criminal case.At present, the connection adopting the Internet Transmission mode of point-to-point fiber direct connection to carry out light signal between video monitoring system and public security system more, this transmission network needs to lay a direct-connected optical cable between position, the control point place and local police station's nucleus equipment of front end, and position, the control point place of front end and the nucleus equipment in local police station couple together by this optical cable.When position, control point is few, the method to set up construction of this video monitoring system is simple, easy to maintenance; But in recent years along with video monitoring system is at guarantee urban safety, the effect of aspect of fighting crime highlighted day by day, and everybody has recognized the importance of video monitoring system, and therefore, video monitoring system obtains popularization and application.So, the control point bit quantity of front end presents explosive growth.The mode of point-to-point fiber direct connection is adopted to build the words of the transmission network of video monitoring system if continue, that will need the direct-connected optical fiber of cloth amplification quantity, a large amount of direct-connected optical fiber will take a large amount of line resources, and also need to build a large amount of ODF (Optical Distribution Frame in inside, local police station, fibre distribution frame), the mode laying network so not only spends comparatively large, and construction is also more difficult.
Utility model content
The utility model provides a kind of network carrying video monitoring system, the intelligent acess technology that this network utilisation is point-to-multipoint, multiple some position, front end Optical Fiber Transmission can be made to enter local police station's nucleus equipment by a small amount of backbone optical cable after convergence, thus greatly reduce laying of optical cable, save cost of investment, also for administering and maintaining from now on provides conveniently.
For solving the problem, the utility model provides a kind of network carrying video monitoring system, and described video monitoring system comprises L CCTV camera, and described network also comprises:
Optical line terminal OLT and M multiuser residential unit MDU, described M be greater than 1 integer;
A described L CCTV camera is corresponding with a described M MDU to be connected, and wherein, described L is the integer being greater than described M, and to be that multiple described CCTV camera is corresponding connect a described MDU for described CCTV camera and the corresponding relation of described MDU;
Described MDU and described OLT communicates to connect, and the video information from described CCTV camera after convergence is sent to described OLT by described MDU.
Compared with prior art, in the utility model, the video information monitored is sent to a coupled MDU by multiple CCTV cameras of front end, the video information of multichannel optical cable transmission that utilizes that multiple CCTV camera can be monitored by this MDU converges to the video information of a road optical cable transmission, then just can pass through a small amount of optical cable in MDU side by this video information transmission in the OLT be connected with MDU.Thus greatly reduce laying of optical cable between front end to OLT, save the cost of investment of network, also for administering and maintaining from now on provides conveniently.
Preferably, described network also comprises: N number of optical splitter and X optical cross box, and multiple described optical splitter is placed in a described optical cross box, and described N is the integer being less than described M, and described X is the integer being less than described N; Multiple described MDU and described optical cross box communicates to connect, multiple described optical splitter correspondence connects a described optical cross box, described optical cross box and described OLT communicate to connect, described optical splitter by again convergence after described video information send to described OLT by described optical cross box.Described MDU, described optical cross box and described OLT are connected by optical cable between any two.Described OLT is positioned at the machine room in local police station.
As improvement of the present utility model, optical cross box and optical splitter can be increased between MDU and OLT, the optical cable that multiple MDU can connect by optical cross box first converges in optical cross box, and then by being placed on optical cross box and the multiple optical splitters that are connected corresponding to this optical cross box, just this multichannel optical cable can be restrained again, the video information in the multichannel optical cable again after convergence just only needs optical cross box to be sent to OLT in local police station's machine room by the relatively less optical cable in a few road or a road.Thus further reduce laying of optical cable between front end to local police station, further save the cost of investment of network, make from now on administer and maintain more convenient.
Preferably, described network also comprises: the network switch be connected with described OLT and the core switch be connected with the described network switch.Described OLT is connected by optical fiber with the described network switch, and described core switch is connected by optical fiber with the 10GE interface of the described network switch.The described network switch is positioned at the machine room in described local police station, and described core switch is positioned at the core machine room of public security bureau.
As further improvement of the utility model, by optical fiber, OLT is connected with the network switch in the machine room in local police station, and then be connected with the core switch in public security bureau core machine room by the 10GE interface of this network switch, thus by the video information transmission in this network to public security bureau side, make public security bureau side also can call in time and know the information such as the security condition in monitoring range, also facilitate public security bureau and this network is effectively managed.
Accompanying drawing explanation
Fig. 1 is the schematic network structure of the carrying video monitoring system of the first execution mode of the present utility model;
Fig. 2 is the schematic network structure of the carrying video monitoring system of the second execution mode of the present utility model;
Fig. 3 is the schematic network structure of the carrying video monitoring system of the 3rd execution mode of the present utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, each execution mode of the present utility model is explained in detail.But, persons of ordinary skill in the art may appreciate that in each execution mode of the utility model, proposing many ins and outs to make reader understand the application better.But, even without these ins and outs with based on the many variations of following execution mode and amendment, each claim of the application technical scheme required for protection also can be realized.
First execution mode of the present utility model relates to a kind of network carrying video monitoring system, and the network of this carrying video monitoring system is for connecting video monitoring system and local police station.This video monitoring system is generally placed in residential block, office office building or crowded public place or needs to carry out some regions of safety guarantee, for the ease of the management and of local police station to video monitoring system, to be coupled together between this video monitoring system and local police station by network.This network is the network built based on PON (passive optical-fiber network, Passiveoptical network) network transmission technology.Concrete, as shown in Figure 1, this network comprises: L CCTV camera 101, OLT103 (Optical Line Terminal, optical line terminal) and M MDU102 (Multiple Dwelling Unit, multiuser residential unit), M be greater than 1 integer.OLT103 is a switch or router, is again that a multi-service provides platform, it provides the optical fiber interface towards passive optical-fiber network.OLT103 is except the function providing network to concentrate and to access, can also for the QoS of user (Quality of Service, service quality)/SLA (ServiceLevel Agreement, service-level agreement) difference require carry out allocated bandwidth, network security and administration configuration.MDU102 have employed the Ethernet agreement of technology maturation and economy, in the MDU of middle bandwidth sum high bandwidth, achieve the Ethernet second layer with low cost or layer three switch function.Wherein, L CCTV camera 101 is corresponding with M MDU102 to be connected, and L is the integer being greater than M, and to be that multiple CCTV camera 101 is corresponding connect a MDU102 for CCTV camera 101 and the corresponding relation of MDU102; MDU102 and OLT103 communicates to connect, and the video information from CCTV camera 101 after convergence is sent to OLT103 by MDU102.That is, in the course of work of this network, the video information monitored is sent to a MDU being connected corresponding to CCTV camera 101 by the multiple CCTV cameras 101 in video monitoring system, each MDU restrains the video information of coupled multi-path monitoring video camera 101 transmission respectively, general, according to the needs of actual transmission bandwidth etc., the video information in 4 road CCTV cameras 101 can be selected to converge to 1 tunnel video information by MDU, namely the optical cable of 4 CCTV cameras connecting MDU is converged to 1 tunnel, video information can also be converted to light signal form by electrical signal form by MDU simultaneously, and then give the coupled OLT103 being positioned at local police station's machine room by the video information of the light signal form after each MDU convergence by a road optical cable transmission.Example, the network in present embodiment may be used for carrying Changning district, Shanghai digital high-definition monitoring project.This project sets up 600 road high-definition monitoring cameras 101 in Changning District, the position, control point, 12 local police stations that this 600 road high-definition monitoring camera 101 can realize Changning District public security subbureau subordinate covers demand.The video camera of the front end that this project uses is high definition IP (Internet Protocol, Internet Protocol) CCTV camera 101, and video camera is by three code stream access MDU equipment.For any one local police station in the local police station of 12, Changning District, suppose that the control point figure place that this local police station connects is 60, MDU adopts the convergence mode of (4:1), the 60 tunnel video informations that so position, 60 control points monitors just can converge to 15 tunnel video informations after by a MDU, thus by 15 road optical cables, each road video information are transferred to the OLT103 being positioned at local police station's machine room by MDU.Network misconvergence of the prior art effect, therefore the 60 road video information transmissions needing 60 road optical cables 60 CCTV cameras 101 could be monitored between position, control point, front end and local police station to obtain are to local police station, and adopt network schemer of the present utility model just can save laying of (60-15)=45 road optical cable between MDU and local police station, also make network struction become clear simple simultaneously.
Compared with prior art, in the utility model, the video information monitored is sent to a coupled MDU by multiple CCTV cameras of front end, the video information of multichannel optical cable transmission that utilizes that multiple CCTV camera can be monitored by this MDU converges to the video information of a road optical cable transmission, then just can pass through a small amount of optical cable in MDU side by this video information transmission in the OLT be connected with MDU.Thus greatly reduce laying of optical cable between front end to OLT, save the cost of investment of network, also for administering and maintaining from now on provides conveniently.
It should be noted that, when networking, between CCTV camera to OLT, route distance will control in 10 kilometer range.Under considering separate unit high definition IP video camera three code stream situation, peak bandwidth is not less than 13.1M/s, therefore the MDU equipment of practical 4 mouthfuls of suggestion, be specially MA5621A equipment, every platform MDU equipment only uses 2 mouthfuls, other 2 mouthfuls as standby port, enable during main port fault.OLT is arranged on administrative local police station machine room, and control point, front end accesses corresponding area under one's jurisdiction local police station machine room OLT, and OLT can adopt MA5680T.
Second execution mode of the present utility model relates to a kind of network carrying video monitoring system.Second execution mode has done further improvement on the basis of the first execution mode, as shown in Figure 2, main improvements are: in the utility model second execution mode, N number of optical splitter 105 and X optical cross box 104 is added between MDU and OLT, multiple optical splitter 105 is placed in an optical cross box 104, N is the integer being less than M, and X is the integer being less than N; Multiple MDU and one optical cross box 104 communicates to connect, and multiple optical splitter 105 correspondence connects an optical cross box 104, and optical cross box 104 and OLT communicate to connect.Optical splitter 105 is simple devices, and it does not need power supply, can be placed in round-the-clock environment, and the separated time rate of a general optical splitter 105 is 2,4,8,16,32,64,128, and can multistagely connect, that is, optical splitter 105 has convergence function.
By this optical cross box 104, first can the optical cable connecting multiple MDU be converged in optical cross box 104, and then the optical splitter 105 with convergence function by being connected with optical cross box 104, multichannel optical cable is restrained again, finally again by optical cross box 104 by again convergence after video information send to OLT.Reach the effect of quadratic convergence, the optical cable laying quantity in whole Internet Transmission is successively reduced, saves cost during networking, the optical cable of negligible amounts is simultaneously also for network management from now on and maintenance provide conveniently.
MDU, optical cross box and OLT are connected by optical cable between any two.Multiple optical splitter is placed in an optical cross box, is connected with optical cross box by the wire jumper of one-in-and-one-out, and the method for attachment of optical cross box and optical splitter is prior art, and the utility model is not described further at this.
In Changning District digital high-definition monitoring project, the optical splitter of (1:32) can be selected, 32 road optical transmission signals can be converged to 1 road optical transmission signal through optical splitter at most and transmit by this optical splitter, in 1 road optical cable, namely can be transmitted the video information in 32 optical cables by this optical splitter simultaneously.Namely in 1 road optical cable, the video information in 32 optical cables can be transmitted by this optical splitter simultaneously, the optical splitter of (1:32) is arranged in Optical cross connects case.Because this project selects the high definition IP video camera of three code streams, the peak value code stream of video camera is higher than 13.1M/s, and when storing, the image of bayonet camera collection requires that the speed bit stream of uploading that 1 MDU connects 2 high-definition cameras is 36M/s, in practice, every platform OLT device list PON port band width theoretical value is 1.25G, actual effective bandwidth is greater than 850M, single PON mouth connects 1 (1:32) optical splitter, but in order to the requirement of bandwidth, namely the bandwidth ability that each light mouth can provide is greater than 36M, so only wherein 20 light mouths can be used when reality uses, like this, the bandwidth of each light mouth is: 850/20=42.5 is greater than 36M, meet bandwidth requirement, remaining 12 light mouths may be used for the dilatation in later stage.Wherein, PON mouth is a downstream interface of OLT.
As improvement of the present utility model, optical cross box and optical splitter can be increased between MDU and OLT, the optical cable that multiple MDU can connect by optical cross box first converges in optical cross box, and then by being placed on optical cross box and the multiple optical splitters that are connected corresponding to this optical cross box, just this multichannel optical cable can be restrained again, the video information in the multichannel optical cable again after convergence just only needs optical cross box to be sent to OLT in local police station's machine room by the relatively less optical cable in a few road or a road.Thus further reduce laying of optical cable between front end to local police station, further save the cost of investment of network, make from now on administer and maintain more convenient.
3rd execution mode of the present utility model relates to a kind of network carrying video monitoring system.3rd execution mode has done further improvement on the basis of the second execution mode, and as shown in Figure 3, main improvements are: add the network switch 106 be connected with OLT and the core switch 107 be connected with the network switch 106 in network.OLT is connected by optical fiber with the network switch 106, and core switch 107 is connected by optical fiber with the 10GE interface of the network switch 106.The network switch 106 is positioned at the machine room in local police station, and core switch 107 is positioned at the core machine room of public security bureau.OLT is converged by the network switch 106 that intelligent acess local police station is newly-increased, be connected with public security subbureau core switch 107 by the 10GE interface of the network switch 106 again, digital high-definition video signal is accessed public security image net, thus achieve the calling function of public security bureau to high-definition image.In order to carry out effective operational management to whole bearer network system, special public security net pipe can be set at public security subbureau's machine room.
According to the demand of networking, the network switch 106 can be S7703, and core switch 107 can be S12518.In addition, the OLT used in networking can, for having the OLT of two 10GE board, single 10GE be linked on local police station's central machine room three layers of aggregation networks switch S7703 light mouth, and the second line of a couplet adopts EPON plate, according to front end demand, adopts 1 block of 8 mouthfuls of PON plate.
As further improvement of the utility model, by optical fiber, OLT is connected with the network switch in the machine room in local police station, and then be connected with the core switch in public security bureau machine room by the 10GE interface of this network switch, thus by the video information transmission in this network to public security bureau side, make public security bureau side also can call in time and know the information such as the security condition in monitoring range, also facilitate public security bureau and this network is effectively managed.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above realize specific embodiment of the utility model, and in actual applications, various change can be done to it in the form and details, and do not depart from spirit and scope of the present utility model.
Claims (10)
1. carry a network for video monitoring system, described video monitoring system comprises L CCTV camera, it is characterized in that, described network comprises:
Optical line terminal OLT and M multiuser residential unit MDU, described M be greater than 1 integer;
A described L CCTV camera is corresponding with a described M MDU to be connected, and wherein, described L is the integer being greater than described M, and to be that multiple described CCTV camera is corresponding connect a described MDU for described CCTV camera and the corresponding relation of described MDU;
Described MDU and described OLT communicates to connect, and the video information from described CCTV camera after convergence is sent to described OLT by described MDU.
2. the network of carrying video monitoring system according to claim 1, it is characterized in that, described network also comprises: N number of optical splitter and X optical cross box, and multiple described optical splitter is placed in a described optical cross box, described N is the integer being less than described M, and described X is the integer being less than described N; Multiple described MDU and described optical cross box communicates to connect, multiple described optical splitter correspondence connects a described optical cross box, described optical cross box and described OLT communicate to connect, described optical splitter by again convergence after described video information send to described OLT by described optical cross box.
3. the network of carrying video monitoring system according to claim 2, is characterized in that, described MDU, described optical cross box and described OLT are connected by optical cable between any two.
4. the network of carrying video monitoring system according to claim 1, is characterized in that, described MDU is MA5621A, and described OLT is MA5680T.
5. the network of carrying video monitoring system according to claim 1, is characterized in that, described OLT is positioned at the machine room in local police station.
6. the network of carrying video monitoring system according to claim 1, is characterized in that, described OLT has two 10GE board.
7. the network of carrying video monitoring system according to claim 1, is characterized in that, described network also comprises: the network switch be connected with described OLT and the core switch be connected with the described network switch.
8. the network of carrying video monitoring system according to claim 7, is characterized in that, described OLT is connected by optical fiber with the described network switch, and described core switch is connected by optical fiber with the 10GE interface of the described network switch.
9. the network of carrying video monitoring system according to claim 7, is characterized in that, the described network switch is S7703, and described core switch is H3C S12518.
10. the network of carrying video monitoring system according to claim 7, is characterized in that, the described network switch is positioned at the machine room in local police station, and described core switch is positioned at the core machine room of public security bureau.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420684687.0U CN204231546U (en) | 2014-11-14 | 2014-11-14 | A kind of network carrying video monitoring system |
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| CN201420684687.0U CN204231546U (en) | 2014-11-14 | 2014-11-14 | A kind of network carrying video monitoring system |
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