CN206759620U - 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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- CN206759620U CN206759620U CN201720105137.2U CN201720105137U CN206759620U CN 206759620 U CN206759620 U CN 206759620U CN 201720105137 U CN201720105137 U CN 201720105137U CN 206759620 U CN206759620 U CN 206759620U
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Abstract
The utility model discloses a kind of simple and direct tunnel HD video of low cost to change system, including headend equipment, node machine equipment and center receiving device；Headend equipment and the node machine equipment passes 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；The utility model turns high definition demand mainly for the simulation in the velocity tunnel of part, there is provided the simple and direct solution method of corresponding low cost.
Description
Technical field
It the utility model is related to field of network transmission, more particularly to the tunnel HD video replacing system that a kind of low cost is simple and direct
System.
Background technology
Video camera and equipment box are all that so, video camera can be square at interval of 150m mono- in now new velocity tunnel
Just be replaced by IPC, coaxial cable is replaced by netting twine, and the apparatus modifications in equipment box can be real for network of relation transmission equipment
It is existing, it is possible to EOC need not to be taken to transmit, straight-forward network transmission can be achieved.
However, the layout of some present old velocity tunnels, according to layout as can be seen that having a shooting every 150m
Machine, there is 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 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, there are Railway Project and corresponding solution method as follows：
1. needing to increase equipment box, each video camera is allowed to correspond to an equipment box, so, video camera is from equipment box
Distance can be all substantially reduced, it is possible to which directly using network cable transmission, but so construction workload and engineering cost all increase greatly
Add and have a great influence.
2. overall routing change, 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 the related national standard file of country, monitor and control facility distance cannot be greater than 150m, and network transmission distance in tunnel
It is required that within 100m, so there is part in actual applications more than 150m, although this part can take relay
Connected mode, but repeater power supply, placement and strick precaution are safeguarded just into big problem.
The content of the invention
The utility model overcomes the deficiencies in the prior art, there is provided a kind of simple and direct tunnel HD video of low cost is changed
System, transmitted on coax after high definition video network signal is changed, meanwhile, because what is used in the past is all simulation monitoring
Equipment, transmitted using coaxial cable, so line need not specially draw in the net again.
The technical solution of the utility model is as follows：
A kind of simple and direct tunnel HD video of low cost changes system, including headend equipment, node machine equipment and center connect
Receiving unit；The headend equipment includes the front end IPC equipment or front end EOC equipment, front end front end EOC with IPC equipment or with EOC
IPC equipment, the node machine equipment are EOC node machine equipments, it include EOC receiving modules, the equipment with optical signal transmission and
The equipment of network monitoring function, the center receiving device includes interchanger, server or the central apparatus with optical port, to number
According to transmission；Headend equipment and the node machine equipment is connect by coaxial cable connecting communication, the node machine equipment and center
Receiving unit passes through optical fiber connecting communication or netting twine connecting communication；Point pair is used between the center receiving device and node machine equipment
One kind among point connected mode, convergence connected mode, cascade Connection mode or looped network connected mode.
Further, the node machine equipment is according to signal of the front end feedback to node machine equipment, it is determined whether by power supply
It is superimposed upon on coaxial cable and is 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 by netting twine to IPC
Electricity.
Further, the point-to-point interconnection is that a Node station sends the corresponding center receiving device of equipment,
One-to-one send receives.
Further, the convergence connected mode is multiple independent sending node machine equipments while a corresponding center connects
Receiving unit, each between transmission equipment independently of each other, data transmission relations is not formed mutually.
Further, the cascade Connection mode is in multiple transmission equipment, and previous transmission equipment first transmits data
To next transmission equipment, next transmission equipment arrive 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 no more than centre receiver band
Width, while each node machine equipment possesses enough bandwidth and receives data, and the data received are added to the number of this Node station
According to sending together.
Further, the looped network connected mode is on the basis of cascade, and increase by one sends equipment by first
It is connected to the connected mode of center receiving device.
Advantage is the utility model compared with prior art：
1st, analog video is upgraded to high-definition network and regarded by the utility model by the way of coaxial cable transmission network signal
Frequently, Internet video is transmitted in coaxial cable, effectively solves the problems, such as transmission range too far, while a large amount of manpowers need not be spent to carry out
The transformation again of circuit, greatly promote transformation efficiency while also effective reduced cost spending.
2nd, the utility model is transmitted using coaxial cable, can be according to practical application, using different headend equipment.
3rd, the utility model can be solved the problems, such as front-end power by Node station, according to the actual requirements, can give headend equipment
Power supply.
4th, one node machine equipment of the utility model can connect multiple headend equipments.
5th, optical transport, optical transport connected mode bag are used between the Node station and center receiving device that the utility model uses
Point-to-point, convergence, cascade, the mode of looped network are included, optical link takes corresponding light protection, and transmission range can at least reach
80km。
6th, the utility model can lift transmission range, and being less than 100m by original network cable transmission is lifted to coaxial transmission
3km。
7th, the utility model can directly use original coaxial cable, it is not necessary to spend a large amount of manpower modification tunnels
Or some special local circuits, if in the past without coaxial cable is used, need to draw coaxial cable cabling.
8th, Node station of the utility model selection with network interface, netting twine is connected between similarly can supporting front end IPC
Node station, the cost of part EOC modules can be saved, it is so, close and draw in the net line again and compare apart from equipment box for IPC
Convenient situation, it is also contemplated that drawing in the net line, communicated using network interface.
Brief description of the drawings
Fig. 1 is the old tunnels mimic video that a kind of simple and direct tunnel HD video of low cost of the utility model changes system
Monitoring camera-shooting device layout schematic diagram；
Fig. 2 is the old tunneled network shooting that a kind of simple and direct tunnel HD video of low cost of the utility model changes system
Monitoring device 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 utility model changes system；
Fig. 4 is Fig. 3 modified basic subrack that a kind of simple and direct tunnel HD video of low cost of the utility model changes system
Frame figure；
Fig. 5, which is that a kind of connected mode of the simple and direct tunnel HD video replacing system of low cost of the utility model is point-to-point, to be shown
It is intended to；
Fig. 6 is the connected mode convergence signal that a kind of simple and direct tunnel HD video of low cost of the utility model changes system
Figure；
Fig. 7 is the connected mode cascade signal that a kind of simple and direct tunnel HD video of low cost of the utility model changes system
Figure；
Fig. 8 is the connected mode looped network signal that a kind of simple and direct tunnel HD video of low cost of the utility model changes system
Figure.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
As shown in figure 1, it is the layout of some present old velocity tunnels, according to layout as can be seen that having every 150m
One video camera, there is an equipment box every 450m, according to this layout, it can be seen that actual that several take the photograph always is had in arrangement
Camera from a distance from nearest equipment box more than 150m.And the typically analog video camera that tunnel old in the past uses, 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 from equipment box with a distance from
Will be substantially reduced, it is possible to directly using network cable transmission, but so construction workload and engineering cost all greatly increase and
Have a great influence, so so doing poor feasibility.
2. overall routing is changed, it is necessary to coaxially netting twine is all modified to by what tunnel internal was drawn now, because tunnel interior lines
Road transformation is very troublesome, so so doing poor feasibility.
3. according to the related national standard file of country, monitor and control facility distance cannot be greater than 150m, and network transmission distance in tunnel
It is required that within 100m, and have part as shown in Figure 2, in practical application more than 150m, although this part can be taken in network
After the connected mode of device, but repeater is powered, places and protected just into big problem, so so doing 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 or front end EOC equipment of the front end EOC with IPC equipment or with EOC, preceding
Hold 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
Camera abbreviation, Chinese are web cameras.
The node machine equipment is EOC node machine equipments, and it includes EOC receiving modules, the equipment mould with optical signal transmission
The EM equipment module of block and network of relation monitoring function.The EOC receiving modules, turn for coaxial signal and the mutual of network signal
Changing, realize communication, coaxial signal is amplified into codec chip through amplifier again by transformer isolation coupling, finally by
The form of network signal is realized with other modules and communicated.Wherein described coaxial signal is converted to network signal as decoding, network letter
Coaxial signal number is converted to as coding, encoding and decoding can be carried out simultaneously, i.e., by coaxial, can realize network signal simultaneously
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 uses 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
In the case that structure does not make any changes, for some IP-based terminals（Such as IP telephone machine, wireless local network connecting point AP, net
Network video camera etc.）While transmitting 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, it 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 apart from equipment box for IPC and in the case of more convenient, 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 to power here, is basis to headend equipment by coaxial cable power supply
Headend equipment feeds back to the signal of node machine equipment, is then determined whether by node machine equipment by power supply superposition on coax
To power 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 machine equipment need in itself it is independently-powered because node machine equipment need consider give headend equipment power supply, the electricity selected here
Source, power require that whole headend equipments of connection can be driven simultaneously.
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；The optical signal transmission part of the optical fiber connecting communication is used with optical signal protection work(
The communication modes of energy, when being exactly that optical link passes through an equipment cascading to next equipment, 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, convergence connected mode, cascade Connection mode,
Looped network connected mode, selection one of which ways of carrying out is attached in concrete application.As shown in Fig. 5 to Fig. 8：Wherein in figure
Transmitting and receiving device, simply the address of equipment is named, is not that data are unidirectional, 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, which is exactly one, sends the corresponding center receiving device of equipment, one-to-one hair
Send reception.
As shown in fig. 6, convergence connected mode is multiple independent transmission equipment while a corresponding center receiving device, often
Between individual transmission equipment independently of each other, data transmission relations are not formed mutually.
As shown in fig. 7, cascade Connection mode is multiple transmission equipment, data are first sent to next by previous transmission equipment
Individual transmission equipment, it is next transmission equipment arrive again it is next, so repeatedly, last transmission equipment transfer 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 adds up no more than
Centre receiver bandwidth, while require that each Node station possesses the number that enough bandwidth add the data received 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 is by first
The connected mode that equipment is also connected to center receiving device is sent, when running usually, link 1 as shown in Figure 8 does not work, number
Center receiving device is sent to according to the mode just as cascade, but is once sent in equipment, the link for having an equipment occurs different
Often, the data before abnormal equipment at this time occur cannot continue according to original path transmission to next equipment, then
Link 1 can be sent to center receiving device with regard to automatic start, such data by link 1.
The EOC nodes machine equipment of the present utility model, network port transmission rate can reach 100,000,000, gigabit.Coaxial electrical
Cable transmission rate can reach 1G, 2G and as the innovation of EOC technologies will reach higher rate transmission, and transmission range can reach
To more than 3km, optical port transmission rate includes the more high speed after 100,000,000, gigabit, 2.5G, 10G and the innovation of follow-up optical transport technology
Rate, 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, such as the video of XX highway engineerings upgrades project, it is necessary to which analog video is upgraded
To HD video, and the SD before the section.This just needs to enter 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 and gone out, because all there has been existing light this part
Fibre, the modification to hardware device only need analog video camera being revised as high-definition camera.If being transmitted using optical fiber, then directly
Optical fiber corresponding to being connected in succession transfers out, and is transmitted if not using optical fiber, then needs an optical transmitter and receiver equipment conversion
Sent for optical signal, 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, can not be straight using netting twine
Transmission is connect, it is necessary to using repeater, and the power supply of repeater, protection, installation etc. are all big problems, so in practical engineering project
In, will smoothly solve wiring problem using the utility model, and without changing cabling, use the original direct transmission network of coaxial cable
Network vision signal, while in terms of power supply, also solve the problems, such as that power supply spreads line inconvenience, greatly improve transformation efficiency, protect
Hinder the stabilization that equipment is run after transforming, and save improvement cost.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
Art personnel, without departing from the concept of the premise utility, some improvements and modifications can also be made, these improvements and modifications
Also should be regarded as in scope of protection of the utility model.
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 the front end IPC equipment or front end EOC 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 receiving modules, band optical signal transmission
Equipment and network monitoring function equipment, the center receiving device include interchanger, server or other with optical port
Heart equipment, to the transmission of data；Headend equipment and the node machine equipment passes through coaxial cable connecting communication, the Node station
Equipment and center receiving device pass through optical fiber connecting communication or netting twine connecting communication；The center receiving device and node machine equipment
Between include it is point-to-point, convergence, cascade, the connected mode of looped network.
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 is powered to headend equipment.
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 and netting twine connecting communication is used between front end EOC equipment, front end IPC equipment.
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 by netting twine to IPC.
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 the corresponding center receiving device of equipment to state point-to-point, and one-to-one send receives.
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
Stating convergence is multiple independent sending node machine equipments while corresponds to a center receiving device, between each transmission equipment mutually
It is independent, data transmission relations are not formed 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
It is in multiple transmission equipment to state cascade, and data are first sent to next transmission equipment, next transmission by previous transmission equipment
Equipment arrives next again, and so repeatedly, last sends equipment and transfers data to center receiving device, all on link
The transmission data bandwidth of node machine equipment is added up no more than centre receiver bandwidth, while each node machine equipment possesses foot
Enough bandwidth receive data, and data of the data received plus this Node station are sent together.
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 one connection side that first transmission equipment is also connected to center receiving device of increase on the basis of cascade to state looped network
Formula.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106791705A (en) * | 2017-01-24 | 2017-05-31 | 杭州中威电子股份有限公司 | A kind of simple and direct tunnel HD video of low cost changes system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106791705A (en) * | 2017-01-24 | 2017-05-31 | 杭州中威电子股份有限公司 | A kind of simple and direct tunnel HD video of low cost changes system |
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