CN106791705A - A kind of simple and direct tunnel HD video of low cost changes system - Google Patents
A kind of simple and direct tunnel HD video of low cost changes system Download PDFInfo
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- CN106791705A CN106791705A CN201710060246.1A CN201710060246A CN106791705A CN 106791705 A CN106791705 A CN 106791705A CN 201710060246 A CN201710060246 A CN 201710060246A CN 106791705 A CN106791705 A CN 106791705A
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- 238000004891 communication Methods 0.000 claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 57
- 230000003287 optical effect Effects 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 5
- 230000011664 signaling Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000009466 transformation Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Abstract
System, including headend equipment, node machine equipment and center receiving device are changed the invention discloses a kind of simple and direct tunnel HD video of low cost；The headend equipment and node machine equipment pass through optical fiber connecting communication or netting twine connecting communication by coaxial cable connecting communication, the node machine equipment and center receiving device；Include point-to-point, convergence, cascade, the connected mode of looped network between the center receiving device and node machine equipment；Turn high definition demand present invention is generally directed to the simulation in the velocity tunnel of part, there is provided the simple and direct solution of corresponding low cost.
Description
Technical field
System is changed the present invention relates to field of network transmission, more particularly to a kind of simple and direct tunnel HD video of low cost.
Background technology
Video camera and equipment box are all that so, video camera can be square at interval of 150m mono- in new velocity tunnel now
Just be replaced by IPC, coaxial cable is replaced by netting twine, and the apparatus modifications in equipment box are that network of relation transmission equipment can be real
Existing, it is possible to EOC need not be taken to transmit, straight-forward network transmission is capable of achieving.
However, the layout of present some old velocity tunnels, according to layout as can be seen that having a shooting every 150m
Machine, has an equipment box every 450m, according to this layout, it can be seen that actually have the closest equipment of multiple video cameras
Case is more than 150m.
What tunnel old in the past was used is typically all analog video camera, and such tunnel interior cabling connected mode is coaxial electrical
Cable, if being directly revised as present web camera, has Railway Project and corresponding solution as follows：
1. need to increase equipment box, allow each video camera to correspond to an equipment box, so, video camera is with a distance from equipment box
Will be substantially reduced, it is possible to directly using network cable transmission, but so construction workload and engineering cost all greatly increase and
Influence is larger.
2. overall routing modification, it is necessary to by tunnel internal draw now it is coaxial be all modified to netting twine, but tunnel interior lines
Road transformation is sufficiently complex troublesome.
3., according to national correlation GB file, monitor and control facility distance cannot be greater than 150m, and network transmission distance in tunnel
It is required that within 100m, so having part in actual applications more than 150m, although this part can take relay
Connected mode, but maintenance is powered, places and taken precautions against to repeater just into big problem.
The content of the invention
Instant invention overcomes the deficiencies in the prior art, there is provided a kind of simple and direct tunnel HD video of low cost changes system
System, transmits on coax after high definition video network signal is changed, meanwhile, because what is used in the past is all that simulation monitoring sets
It is standby, coaxial cable transmission is used, so line need not specially draw in the net again.
Technical scheme is as follows：
A kind of simple and direct tunnel HD video of low cost changes system, including headend equipment, and node machine equipment and center receive and set
It is standby；The headend equipment includes front end IPC equipment of the front end EOC with IPC equipment or with EOC or front end EOC equipment, front end IPC
Equipment, the node machine equipment is EOC node machine equipments, and it includes EOC receiver modules, the equipment with optical signal transmission and network
The equipment of monitoring function, the center receiving device includes interchanger, server or the central apparatus with optical port, to data
Transmission；The headend equipment and node machine equipment are received and set by coaxial cable connecting communication, the node machine equipment and center
It is standby to pass through optical fiber connecting communication or netting twine connecting communication；Point-to-point company is used between the center receiving device and node machine equipment
Connect the one kind among mode, convergence connected mode, cascade Connection mode or looped network connected mode.
Further, the node machine equipment according to front end feedback to node machine equipment signal, it is determined whether by power supply
It is superimposed upon on coaxial cable to be powered to headend equipment.
Further, the headend equipment is powered using independent current source.
Further, netting twine connecting communication is used between the front end EOC equipment, front end IPC equipment.
Further, the equipment of the network of relation monitoring function of the node machine equipment include data-interface, COBBAIF,
K frequencies signaling interface and network interface, the network interface of the node machine equipment carry POE functions, can be supplied to IPC by netting twine
Electricity.
Further, the point-to-point interconnection is that a Node station sends equipment one center receiving device of correspondence,
One-to-one transmission receives.
Further, the connected mode that converges is that multiple independent sending node machine equipments connect at one center of correspondence simultaneously
Receiving unit, it is separate between each transmission equipment, data transmission relations are not constituted mutually.
Further, during the cascade Connection mode is multiple transmission equipment, previous transmission equipment first transmits data
To next transmission equipment, next transmission equipment arrives next again, and so repeatedly, last transmission equipment transmits data
To center receiving device, the transmission data bandwidth of all node machine equipments on link is added up less than or equal to centre receiver band
Width, while each node machine equipment possesses enough bandwidth receives data, and the data that will be received plus the number of this Node station
According to sending together.
Further, the looped network connected mode is on the basis of cascade, to increase by one and send equipment by first
It is connected to the connected mode of center receiving device.
Advantage is the present invention compared to existing technology：
1st, analog video is upgraded to high-definition network video, network by the present invention by the way of coaxial cable transmission network signal
Video is transmitted in coaxial cable, effectively solves the problems, such as transmission range too far, and row line is entered without the need for a large amount of manpowers are spent
Again transform, greatly promote transformation efficiency while also effective reduced cost spending.
2nd, the present invention is transmitted using coaxial cable, can be according to practical application, using different headend equipment.
3rd, the present invention can solve the problems, such as front-end power by Node station, according to the actual requirements, can be powered to headend equipment.
4th, a node machine equipment of the invention can connect multiple headend equipments.
5th, optical transport is used between the Node station and center receiving device of present invention use, optical transport connected mode includes point
To point, convergence, cascade, looped network mode, optical link takes the protection of corresponding light, and transmission range can at least reach 80km.
6th, the present invention can lift transmission range, be lifted to coaxial transmission 3km less than 100m by original network cable transmission.
7th, the present invention can directly use original coaxial cable, it is not necessary to spend a large amount of manpower modification tunnel or one
The circuit in a little special places, if not using coaxial cable in the past, needs to draw coaxial cable cabling.
8th, Node station of the present invention selection with network interface, netting twine is connected to node between similarly can supporting front end IPC
Machine, can save the cost of part EOC modules, so, close apart from equipment box for IPC and to draw in the net line again more convenient
Situation, it is also possible to line is drawn in the net in consideration, is communicated using network interface.
Brief description of the drawings
Fig. 1 is the old tunnels mimic video camera that a kind of simple and direct tunnel HD video of low cost of the present invention changes system
Monitoring device schematic layout pattern；
Fig. 2 is the old tunneled network monitoring camera-shooting equipment that a kind of simple and direct tunnel HD video of low cost of the present invention changes system
Schematic layout pattern；
Fig. 3 is the basic framework figure that a kind of simple and direct tunnel HD video of low cost of the present invention changes system；
Fig. 4 is Fig. 3 modified basic framework figures that a kind of simple and direct tunnel HD video of low cost of the present invention changes system；
Fig. 5 is the point-to-point schematic diagram of connected mode that a kind of simple and direct tunnel HD video of low cost of the present invention changes system；
Fig. 6 is the connected mode convergence schematic diagram that a kind of simple and direct tunnel HD video of low cost of the present invention changes system；
Fig. 7 is the connected mode cascade schematic diagram that a kind of simple and direct tunnel HD video of low cost of the present invention changes system；
Fig. 8 is the connected mode looped network schematic diagram that a kind of simple and direct tunnel HD video of low cost of the present invention changes system.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in figure 1, be the layout of present some old velocity tunnels, according to layout as can be seen that having every 150m
One video camera, has an equipment box every 450m, according to this layout, it can be seen that actual that several taking the photograph always is had in arrangement
Camera is with a distance from nearest equipment box more than 150m.And the typically all analog video camera that tunnel old in the past is used, this
Sample tunnel interior cabling connected mode is coaxial cable, if being directly revised as present web camera, has Railway Project, specifically
It is as follows：
1. increase equipment box, allow each video camera to correspond to an equipment box, so, video camera all can with a distance from equipment box
It is substantially reduced, it is possible to directly using network cable transmission, but so construction workload and engineering cost are all greatly increased and influenceed
It is larger, so do so poor feasibility.
2. overall routing modification, it is necessary to by tunnel internal draw now it is coaxial be all modified to netting twine because tunnel interior lines
Road transformation is bothered very much, so do so poor feasibility.
3., according to national correlation GB file, monitor and control facility distance cannot be greater than 150m, and network transmission distance in tunnel
It is required that within 100m, and there is part as shown in Figure 2, in practical application more than 150m, although during this part can take network
After the connected mode of device, but repeater is powered, placed and protected just into big problem, so do so poor feasibility.
In view of problem above and feasibility, there is provided a kind of simple and direct tunnel HD video of low cost changes system, bag
Include headend equipment, node machine equipment and center receiving device.
The headend equipment includes front end IPC equipment of the front end EOC with IPC equipment or with EOC or front end EOC equipment, preceding
End IPC equipment.Netting twine connecting communication is used between the front end EOC equipment, front end IPC equipment.The EOC（Ethernet
Over Cable）It is the access technology that Ethernet protocol is used based on wired TV coaxial cable net.The IPC refers to IP
The abbreviation of Camera, Chinese is web camera.
The node machine equipment is EOC node machine equipments, and it includes EOC receiver modules, the equipment mould with optical signal transmission
The EM equipment module of block and network of relation monitoring function.The EOC receiver modules, turn for coaxial signal and the mutual of network signal
Change, realize communication.Coaxial signal couples again amplified device and is amplified into codec chip by transformer isolation, finally by
The form of network signal is realized communicating with other modules.It is decoding, network letter that wherein described coaxial signal is converted to network signal
It is coding number to be converted to coaxial signal, and encoding and decoding can be that while carry out, i.e., by coaxial, can simultaneously realize network signal
Input and output.The EM equipment module of the network of relation monitoring function of the node machine equipment includes data-interface, COBBAIF, K
Frequency signaling interface and network interface, the network interface of the node machine equipment is using the interface with POE functions, so as to pass through net
Line is powered to IPC.The POE (Power Over Ethernet) refers to connecting up foundation frame in existing Ethernet Cat.5
It is being some IP-based terminals in the case that structure does not make any changes（Such as IP telephone machine, wireless local network connecting point AP, net
Network video camera etc.）While transmission data-signal, moreover it is possible to which the technology of direct current supply is provided for this kind equipment.Selection carries network interface
Node machine equipment, can support to be connected to node machine equipment by netting twine between the IPC of front end, it is possible to save part EOC modules
Cost, it is and close and in the case of more convenient apart from equipment box for IPC, it is possible to which that drawing in the net line again uses network interface
Communication.Corresponding other interfaces are used as expanded function.
Whether the node machine equipment can need power supply here to headend equipment by coaxial cable power supply, be basis
Headend equipment feeds back to the signal of node machine equipment, is then determined whether power supply superposition on coax by node machine equipment
To be powered to headend equipment, in order to reduce line transmission loss, headend equipment can also select independent current source to power.It is wherein described
Node station apparatus body needs are independently-powered, because node machine equipment needs to consider to be powered to headend equipment, the electricity for selecting here
Source, power require can be while drive whole headend equipments of connection.
The center receiving device includes interchanger, server or the central apparatus with optical port, to the transmission of data.Institute
State headend equipment and node machine equipment and light is passed through by coaxial cable connecting communication, the node machine equipment and center receiving device
Fine connecting communication or netting twine connecting communication；Work(is protected using with optical signal in the optical signal transmission part of the optical fiber connecting communication
Can communication modes, be exactly optical link by an equipment cascading to next equipment when, once this unit exception, then
Optical link directly skips this equipment, is gone to next equipment, so, will not be because of the whole link of individual equipment anomalous effects.
Between the center receiving device and node machine equipment include point-to-point interconnection, converge connected mode, cascade Connection mode,
Looped network connected mode, selects one of which ways of carrying out to be attached in concrete application.As shown in Fig. 5 to Fig. 8：Wherein in figure
Transmitting and receiving device, is not unidirectional data simply to the address name of equipment, and data transfer is all two-way.In figure
Center receiving device can be interchanger, server or other central apparatus with light or power port.
As shown in figure 5, point-to-point interconnection is exactly transmission equipment one center receiving device of correspondence, one-to-one hair
Send reception.
As shown in fig. 6, it is multiple independent transmission equipment one center receiving device of correspondence simultaneously to converge connected mode, often
It is separate between individual transmission equipment, data transmission relations are not constituted mutually.
As shown in fig. 7, cascade Connection mode is multiple transmission equipment, first be sent to data next by previous transmission equipment
Individual transmission equipment, next transmission equipment arrives next again, and so repeatedly, last transmission equipment transfers data to center
Receiving device, such data are added on an optical fiber, reach center receiving device, are saved as that can connect how many
Point machine equipment is, it is necessary to be calculated, it is desirable to which the transmission data bandwidth of all node machine equipments on link is added up no more than
Centre receiver bandwidth, while requiring that each Node station possesses the number of data that enough bandwidth will receive plus this Node station
According to sending.
As shown in figure 8, looped network connected mode is exactly on the basis of cascade as shown in Figure 7, increase by one by first
Transmission equipment is also connected to the connected mode of center receiving device, and when running usually, link 1 as shown in Figure 8 does not work, number
Center receiving device is sent to according to just as the mode for cascading, but once in transmission equipment, there is a link for equipment to occur different
Often, the data before abnormal equipment at this time occur cannot continue according to original path transmission to next equipment, then
With regard to automatic, such data can be sent to center receiving device to link 1 by link 1.
The EOC nodes machine equipment of the invention, network port transmission rate can reach 100,000,000, gigabit.Coaxial cable is passed
Defeated speed can reach 1G, 2G and be transmitted as the innovation of EOC technologies will reach higher rate, and transmission range can reach
More than 3km, optical port transmission rate includes the higher rate after 100,000,000, gigabit, 2.5G, 10G and the innovation of follow-up optical transport technology,
Transmission range can at least reach 80 kilometers, and according to the renewal of later optical transport technology, be up to farther distance.
In concrete engineering work progress, the video of such as XX highway engineerings upgrades project, it is necessary to analog video is upgraded
To HD video, and the SD before the section.This is accomplished by entering the camera being installed on the wire pole of both sides of the road
Row modification.This relative change is convenient, because using analog video camera to be transferred to by coaxial cable before road event
Optical transmitter and receiver on electric pole side, then optical signal transmission is converted to by optical transmitter and receiver goes out, because all there has been existing light this part
Fibre, the modification to hardware device only needs to for analog video camera to be revised as high-definition camera.If using Optical Fiber Transmission, then directly
Corresponding Optical Fiber Transmission is connected in succession to go out, and if not Optical Fiber Transmission is used, then needs an optical transmitter and receiver equipment to change
For optical signal sends, so, the modification to circuit is all relative also more convenient, it is not necessary to big-movement.But for tunnel, then repair
Change less easily, as shown in figure 1, camera position apart from Node station compared with the part for exceeding well over 150m, cannot be straight using netting twine
Transmission is connect, it is necessary to using repeater, and the power supply of repeater, protect, installation etc. is all big problem, so in practical engineering project
In, wiring problem will smoothly be solved using the present invention, without changing cabling, regarded using the original direct transmission network of coaxial cable
Frequency signal, while in terms of power supply, also solving the problems, such as that power supply paving line is inconvenient, greatly improves transformation efficiency, ensures
The stabilization of equipment operation after transformation, and save improvement cost.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make some improvements and modifications, and these improvements and modifications also should be regarded as
In the scope of the present invention.
Claims (9)
1. a kind of simple and direct tunnel HD video of low cost changes system, it is characterised in that including headend equipment, node machine equipment
With center receiving device；The headend equipment includes front end IPC equipment or front end EOC of the front end EOC with IPC equipment or with EOC
Equipment, front end IPC equipment, the node machine equipment are EOC node machine equipments, and it includes EOC receiver modules, band optical signal transmission
Equipment and network monitoring function equipment, the center receiving device sets including interchanger, server or the center with optical port
It is standby, to the transmission of data；The headend equipment and node machine equipment are by coaxial cable connecting communication, the node machine equipment
Pass through optical fiber connecting communication or netting twine connecting communication with center receiving device；Between the center receiving device and node machine equipment
Using the one kind among point-to-point interconnection, convergence connected mode, cascade Connection mode or looped network connected mode.
2. a kind of simple and direct tunnel HD video of low cost according to claim 1 changes system, it is characterised in that：It is described
Node machine equipment according to front end feedback to node machine equipment signal, it is determined whether power supply is superimposed upon on coaxial cable to preceding
End equipment is powered.
3. a kind of simple and direct tunnel HD video of low cost according to claim 1 changes system, it is characterised in that：It is described
Headend equipment is powered using independent current source.
4. a kind of simple and direct tunnel HD video of low cost according to claim 1 changes system, it is characterised in that：Institute
State between front end EOC equipment, front end IPC equipment using netting twine connecting communication.
5. a kind of simple and direct tunnel HD video of low cost according to claim 1 changes system, it is characterised in that：Institute
The equipment for stating the network of relation monitoring function of node machine equipment connects including data-interface, COBBAIF, K frequencies signaling interface and network
Mouthful, the network interface of the node machine equipment carries POE functions, can be powered to IPC by netting twine.
6. a kind of simple and direct tunnel HD video of low cost according to claim 1 changes system, it is characterised in that：Institute
It is that a Node station sends equipment one center receiving device of correspondence to state point-to-point interconnection, and one-to-one transmission is received.
7. a kind of simple and direct tunnel HD video of low cost according to claim 1 changes system, it is characterised in that：Institute
It is multiple independent sending node machine equipments one center receiving device of correspondence simultaneously to state and converge connected mode, and each sends equipment
Between it is separate, data transmission relations are not constituted mutually.
8. a kind of simple and direct tunnel HD video of low cost according to claim 1 changes system, it is characterised in that：Institute
In stating cascade Connection mode and being multiple transmission equipment, data are first sent to previous transmission equipment next transmission equipment, under
One sends equipment and arrives next again, and so repeatedly, last transmission equipment transfers data to center receiving device, link
On the transmission data bandwidth of all node machine equipments add up less than or equal to centre receiver bandwidth, while each Node station sets
Data are received for possessing enough bandwidth, and the data that will be received send together plus the data of this Node station.
9. a kind of simple and direct tunnel HD video of low cost according to claim 8 changes system, it is characterised in that：Institute
It is on the basis of cascade, to increase by one and first transmission equipment is also connected into center receiving device to state looped network connected mode
Connected mode.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107968936A (en) * | 2017-12-29 | 2018-04-27 | 长江勘测规划设计研究有限责任公司 | Web-transporting device applied to underground workshop |
| CN111586704A (en) * | 2020-03-23 | 2020-08-25 | 北京瀚诺半导体科技有限公司 | System for carry out indoor degree of depth of 5G and cover based on coaxial cable |
| CN111586347A (en) * | 2020-04-15 | 2020-08-25 | 桂林长海发展有限责任公司 | Camera front-end data processing device and method and storage medium |
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