CN103281516B - Portable video terminal, video return system and method - Google Patents
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Abstract
The invention discloses a portable video terminal, a video return system and a video return method. The video return system comprises a remote end part and a local part, wherein the local part comprises a local monitoring client, a first router, a firewall and a decoding dispatcher; the remote end part comprises a portable video terminal and a second router; the portable video terminal comprises a terminal body, a 3G card and a portable button camera; the terminal body is provided with a central processing chip, a 3G antenna, an antenna interface module, a video encoding chip, a video interface module, an Ethernet port, a wireless network switch and a 3G interface module; and the antenna interface module, the 3G card and the wireless network switch are connected with the central processing chip through the 3G card interface module respectively. A small-sized portable camera terminal is adopted, and a dual-network running function is achieved, so that the problem of incapability of returning videos in a wireless 3G network under the condition of weak signal is solved.
Description
Technical field
The present invention is with regard to video passback technology, returns especially with regard to a kind of portable video terminal, video
Pass system and method.
Background technology
Increasingly heavy with communication scheduling work, only in accordance with conventional message scheduling mode in new work
Inharmonic situation a bit is more or less occurred in that, such as running in substation field needs to communicate in changing
During the situation that scheduling decision solves, in the scheduling mode in past, liaison mode or multimedia message mode can only be used
Fault or problem are described, not only not directly perceived, also it is easy to because the deviation of narration causes decision-making to tie
The difference of fruit, have impact on the efficiency of work.
In order to solve the problems, such as to presently, there are, improve the work effect of communication scheduling personnel and live operation maintenance personnel
Rate, is now typically operated by the way of long-distance video passback.
Long-distance video passback technology typically has two ways at present, and one kind installs photographic head mode for fixing point,
One kind is Portable image pickup head mode, introduces separately below：
Fixing point installs photographic head mode：The mode that fixing point installs photographic head is by photographic head, DVR
（Digital Video Recorder digital hard disc video recorder）Server, can be passed to locally by cable network
Server, is monitored realizing finally by locally displayed equipment, specifically as shown in Figure 1.Due to
Using fixing camera, and adopt cable-network transmission, passback video quality and transmission speed are protected
Card, but due to hard-wired limitation, many dead angles aspect cannot observe, therefore and be unsatisfactory for
The requirement of the internal particular problem of the machine rooms such as communication scheduling aid in treatment transformer station, there is overall flexibility ratio in system
Not high shortcoming.
Portable image pickup head mode：General which is by Portable image pickup head, portable power source and movement
Server forms, and is transmitted by wireless 3G network, reaches local video server, by display device
It is monitored, under concrete composition shown in Fig. 2.Although Portable image pickup head mode can realize dollying
Head real-time video retransmission function, but again without the portability realized truly, because this system
Design in addition to mobile imaging head in addition it is also necessary to Mobile Server, if Mobile Server no built-in power,
Also need to the support of portable power source, node and equipment are the simplest again without reaching, and make for Field Force
Not easy, direct with operation, and the general head of Mobile Server is not little, and weight is not light, is not very
It is suitable for Field Force to carry with；Using wireless 3G passback, in the weaker place of signal, video effect
And transmission speed also can be affected by certain.
Content of the invention
The present invention provides a kind of portable video terminal, video return system and method, to solve wireless 3G
Network cannot be carried out the problem of video passback in the case that signal is weaker.
To achieve these goals, the present invention provides a kind of portable video terminal, described portable regards
Frequency terminal includes：Terminal body, 3G card and portable button video camera, wherein,
Described terminal body is provided with central processing element, 3G antenna, antenna interface module, Video coding
Chip, video interface module, network interface, wireless network switch and 3G card interface module；Described antenna connects
During mouthful module, 3G card and wireless network switch pass through described in described 3G card interface module connection respectively
Centre process chip；The video signal that described portable button video camera shoots sequentially passes through described video
Interface module and video coding chip are sent to described central processing element, described central processing element
By the described video signal of described network interface connection private network of electric power system network transmission or by described 3G days
The described video signal of line transmission.
In one embodiment, described terminal body is additionally provided with：Network automatic identification chip, with described net
Network switch, central processing element and network interface connect respectively.
In one embodiment, described network interface is RJ45 network interface.
In one embodiment, described terminal body is additionally provided with：Power supply interface module.
In one embodiment, described terminal body is additionally provided with：Charging inlet.
To achieve these goals, the present invention provides a kind of video return system, and described video passback is
System includes：Distal portions and local part；
Described local part includes：Local monitor client, the first router, fire wall and solution code division
Send out device；Described distal portions include：Portable video terminal and the second router；Described is portable
Video signal is passed sequentially through described the second router, the first via in private network of electric power system network by video terminal
Described local monitor client is sent to by device, or video signal is passed sequentially through in 3G network institute
Decoding distributor, fire wall and the first router stated are sent to described local monitor client；
Described portable video terminal includes：Terminal body, 3G card and portable button video camera；Institute
State terminal body be provided with central processing element, 3G antenna, antenna interface module, video coding chip,
Video interface module, network interface, wireless network switch and 3G card interface module；Described antenna interface module,
3G card and wireless network switch connect described central authorities by described 3G card interface module respectively and process core
Piece；The video signal that described portable button video camera shoots sequentially passes through described video interface module
And video coding chip is sent to described central processing element, described central processing element passes through described
The described video signal of network interface connection private network of electric power system network transmission or by described 3G antenna transmission institute
The video signal stated.
In one embodiment, described terminal body is additionally provided with：Network automatic identification chip, with described net
Network switch, central processing element and network interface connect respectively.
In one embodiment, described network automatic identification chip is single-chip microcomputer or FPGA.
In one embodiment, described terminal body is additionally provided with：Power supply interface module.
In one embodiment, described terminal body is additionally provided with：Charging inlet.
To achieve these goals, the present invention provides a kind of video retransmission method, described video passback side
Method includes：Video signal is obtained by described portable button video camera；To the described video letter obtaining
Number perform the encoding operation, generate the described video signal after coding；By current network speed with default
Network speed threshold value is compared, and selects the return network of the described video signal after coding；Returning using selection
Pass network and the described video signal after encoding is returned to local monitor client.
In one embodiment, when the return network selecting is 3G network, the return network using selection will
Video signal after coding returns to local monitor client, including：
Solved using the described video signal that described 3G network sends after coding to described decoding distributor
Code, generates decoded video signal；
Decoded described video signal passes through described electric power in described 3G network after address conversion
Decoded described video signal is returned to local monitor client by dedicated network.
The beneficial effects of the present invention is, the present invention adopts the field camera terminal of small volume, and
Possess double Grid Movement Functions, solve wireless 3G network and cannot be carried out video in the case that signal is weaker and return
The problem passing, extends systematic difference scope.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing applying required use in example or description of the prior art be briefly described it should be apparent that, below
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
Without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing applying required use in example or description of the prior art be briefly described it should be apparent that, below
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
Without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is to install, using fixing point, the structure that photographic head mode carries out video signal passback in prior art
Schematic diagram；
Fig. 2 is the structural representation carrying out video signal passback in prior art using Portable image pickup head mode
Figure；
Fig. 3 is the structural representation of the video return system of the embodiment of the present invention；
Fig. 4 is the structural representation of embodiment of the present invention portable video terminal；
Fig. 5 is the structural representation of the terminal body of embodiment of the present invention portable video terminal；
Fig. 6 is the video retransmission method flow chart of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
The every other embodiment being obtained under the premise of going out creative work, broadly falls into the scope of protection of the invention.
As shown in figure 3, the present embodiment provides a kind of video return system, this video return system includes：
Distal portions and local part；
Described local part includes：Local monitor client 301, the first router 302, fire wall 303
And decoding distributor 304.Described distal portions include：Portable video terminal 305 and the second router
306.
Local monitor client 301, the first router 302, fire wall 303 and decoding distributor 304 according to
Secondary connection, local monitor client 301 passes through private network of electric power system network wired connection with the first router 302,
The first router 302 and fire wall 303 are also by private network of electric power system network wired connection, but decoding distribution
Device 304 passes through 3G network（Public network）Connect portable video terminal 305.In addition, portable video is eventually
End 305 is also connected by the second router 306 in private network of electric power system network, and then is connected to local monitor visitor
Family end 301.
Video signal is passed sequentially through described in private network of electric power system network by described portable video terminal 305
The second router 306, the first router 302 be sent to described local monitor client 301, or
Video signal is passed sequentially through in 3G network described decoding distributor 304, fire wall 303 and first
Router 302 is sent to described local monitor client 301.
Video return system as shown in Figure 3, is carried out by portable video terminal 305 by working site
Video acquisition is it is possible to be carried out the video signal of collection by wireless 3G network or private network of electric power system network
Passback.In the strong place of 3G signal, mainly video signal can be carried out using 3G network transmission means
Passback；In the case that 3G signal is weaker, private network of electric power system network in available machine room, using wired biography
Defeated mode carries out the passback of video signal, working site video acquisition and selectable signal return mode
Design makes system overall utility greatly enhance, and motility is higher.
As shown in figure 3, crossing 3G wireless network transmissions mode or private network of electric power system network wired mode by far-end is same
The video signal of passback, all finally carries out the access of local video signal using private network of electric power system network, by
Communication scheduling calls at any time.Following is a brief introduction of two kinds of network transmission modes realizes step：
1st, far-end corded power dedicated network → local corded power dedicated network
Far-end corded power dedicated network is passed through far-end electric integrated data network juniper T640 router
305 access locally in electric integrated data network juniper T640 router 302, in local juniper T640
Router 302 carries out policy development, divides special for this communication scheduling long-distance video aid decision-making system
Video VPN, is communicated to each substation field by 155M circuit and video signal passback.?
In the special VPN of video, it is that portable video terminal 305 and local monitor client 301 of system etc. set
The proprietary IP address of standby division, is linked into by the network switch by local juniper T640 router 302
The video signal of far-end passback in local monitor client 301, is received in local monitor client 301,
Realize remote scheduling aid decision.
2nd, the wireless 3G network of far-end → local corded power dedicated network
Add a network firewall local, wireless for far-end 3G network first accessed decoding distributor 304,
Decoding video signal to wireless 3G passback and distribution, then this is directly accessed by 3G network transmission
Ground fire wall 303, carries out policy development by fire wall 303.In order to ensure network security, need in plan
Carry out isolation safe setting in slightly, limit the network port, retain necessary transmission port, by policy development
For outer net one-way transmission, the i.e. video signal of only unidirectional reception outer net passback；Carry out address conversion, by public affairs
Net IP passes through address of cache, is converted to the IP address of the video VPN of electric power data network private network division,
Can be communicated with private network of electric power system network in the case of ensureing network security, realize passing through private network of electric power system network
Carry out the reception that wireless 3G network returns video signal, first received well in local monitor client 301
And realize live remote assistant decision-making.
Video return system selects transmission except the dual network employing video signal, additionally uses and uses button
Video camera is as the video capture device of portable video terminal, and portable video terminal 305 size
Be equivalent to mobile phone size, compact, be easy to carry, video signal can be gathered, while cooperation
Communication scheduling carries out work on the spot, and the structure of portable video terminal 305 is as shown in Figures 4 and 5.
In Fig. 4, described portable video terminal 305 includes：Terminal body 401,3G card 402 and
Portable button video camera 403.
As shown in Figures 4 and 5, described terminal body be provided with central processing element 501,3G antenna 404,
Antenna interface module 502, video coding chip 503, video interface module 504, network interface 505, wireless
Network switching 506 and 3G card interface module 507.
Described antenna interface module 502,3G card 402 and wireless network switch 506 pass through described respectively
3G card interface module 507 connect described central processing element 501.
The video signal that described portable button video camera 403 shoots sequentially passes through described video interface
Module 504 and video coding chip 503 are sent to described central processing element 501, described centre
Reason chip 501 passes through described network interface 505 and connects private network of electric power system network transmission described video signal or logical
Cross described 3G antenna 404 and transmit described video signal.It is preferred that central processing element 501 is permissible
For hardware configurations such as single-chip microcomputer or MCU, network interface can be RJ45 network interface, and the present invention is not limited system.
The effect of wireless network switch 506 is, in the case that 3G signal is weaker, cut-out wireless network is opened
Close 506, using the private network of electric power system network in machine room, carry out the passback of video signal using wire transmission mode.
The control of wireless network switch 506 can be switched by artificial means it is also possible to be entered by the program setting
Row automatically switches.
In a preferred embodiment, described terminal body 401 is additionally provided with：Network automatic identification chip 508,
Network automatic identification chip 508 is connected respectively with described network switching, central processing element and network interface.Net
Network automatic identification chip 508 can be single-chip microcomputer or FPGA, and its effect is can to switch in wireless network
In the case of 506 closures, it is automatically obtained the switching of wireless 3G network and private network of electric power system network.For example permissible
Set switching threshold, if current network is wireless 3G network, network automatic identification chip 508 implements inspection
Survey the network speed of wireless 3G network, when the network speed of wireless 3G network is less than 30KB/S, automatically switch to
Private network of electric power system network returns video, if the network speed of wireless 3G network is more than 30KB/S, automatically switches
Return video to wireless 3G network.
Certainly, the video information maintaining secrecy for some, for the sake of security, can only pass through electric power special
Network transmission, now only need to cut off wireless network switch 506.Wireless network switch 506 and network
Automatic identification chip 508 uses cooperatively so that the transmission of video signal becomes flexible, also ensure that video
The safety of signal transmission.
It is in preferred embodiment, described terminal body 401 is additionally provided with：Lithium battery 405 and power supply
Interface module 509, can connect power supply by power supply interface module 509.
It is preferred that being additionally provided with described terminal body：It is used for portable video terminal 305 charging
Charging inlet 406.
As shown in fig. 6, a kind of present invention video retransmission method of offer, the video return system of the present invention,
Described video retransmission method comprises the steps：
Step S601：Video signal is obtained by described portable button video camera.This video signal is
Video signal during substation field fault, such as substation field runs into needs communication scheduling decision-making to solve
Situation when, substation field video can be shot.
Step S602：Video coding chip 503 is to the described encoding video signal operation obtaining, raw
Become the described video signal after coding.
Step S603：Current network speed is compared with default network speed threshold value, after selecting coding
Described video signal return network.
In the case that wireless network switch 506 disconnects, 3G network disconnects, and can only utilize private network of electric power system
Network carries out video passback.Switch the netting twine connection of 506 closures and private network of electric power system network in wireless network
In the case of, the current network speed of network automatic identification chip 508 automatic identification 3G network, if current net
Speed is more than default network speed threshold value（30KB/S for example can be preset as）When, carry out selecting 3G network
Video returns.If current network speed is less than default network speed threshold value, enter selecting private network of electric power system network
Row video returns.
Step S604：Using the return network selecting, the described video signal after encoding is returned to local prison
Control client.
When the return network selecting is 3G network, using described 3G network to local decoding distributor
Send the described decoding video signal after coding, generate decoded video signal, then will decode
Video signal afterwards passes through private network of electric power system network in described 3G network after fire wall carries out address conversion
Decoded video signal is returned to local monitor client, after then local monitor client will decode
Information carry out communication scheduling.
When the return network selecting is private network of electric power system network, using private network of electric power system network to local monitor visitor
Family end, the video signal being transmitted by private network of electric power system network is the video signal after video coding chip coding,
Also need to carry out video decoding in local monitor client, then local monitor client is by decoded letter
Breath carries out communication scheduling.
Those skilled in the art it should be appreciated that embodiments of the invention can be provided as method, system or
Computer program.Therefore, the present invention can using complete hardware embodiment, complete software embodiment,
Or combine the form of the embodiment of software and hardware aspect.And, the present invention can be using one or more
Wherein include the computer-usable storage medium of computer usable program code（Including but not limited to disk
Memorizer, CD-ROM, optical memory etc.）The form of the computer program of upper enforcement.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）, and computer program produce
The flow chart of product and/or block diagram are describing.It should be understood that can by computer program instructions flowchart and/
Or each flow process in block diagram and/or the flow process in square frame and flow chart and/or block diagram and/or square frame
Combination.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedded place
The processor of reason machine or other programmable data processing device is to produce a machine so that passing through computer
Or the instruction of the computing device of other programmable data processing device produces for realizing in flow chart one
The device of the function of specifying in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or other programmable datas can be guided to process and set
So that being stored in this computer-readable memory in the standby computer-readable memory working in a specific way
In instruction produce and include the manufacture of command device, the realization of this command device in one flow process of flow chart or
The function of specifying in multiple flow processs and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device,
So that execution series of operation steps is computer implemented to produce on computer or other programmable devices
Process, thus the instruction of execution is provided for realizing in flow chart on computer or other programmable devices
The step of the function of specifying in one flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Apply specific embodiment in the present invention principle of the present invention and embodiment are set forth, with
The explanation of upper embodiment is only intended to help and understands the method for the present invention and its core concept；Simultaneously for
One of ordinary skill in the art, the thought of the foundation present invention, in specific embodiments and applications
All will change, in sum, this specification content should not be construed as limitation of the present invention.
Claims (7)
1. a kind of portable video terminal is it is characterised in that described portable video terminal includes：Eventually
End body, 3G card and portable button video camera, wherein,
Described terminal body is provided with central processing element, 3G antenna, antenna interface module, Video coding
Chip, video interface module, network interface, wireless network switch and 3G card interface module；Described antenna connects
During mouthful module, 3G card and wireless network switch pass through described in described 3G card interface module connection respectively
Centre process chip；The video signal that described portable button video camera shoots sequentially passes through described video
Interface module and video coding chip are sent to described central processing element, described central processing element
By the described video signal of described network interface connection private network of electric power system network transmission or by described 3G days
The described video signal of line transmission；
It is additionally provided with described terminal body：Network automatic identification chip, with described wireless network switch, in
Centre process chip and network interface connect respectively, and described network automatic identification chip is single-chip microcomputer or FPGA.
2. portable video terminal according to claim 1 is it is characterised in that described network interface is
RJ45 network interface.
3. portable video terminal according to claim 2 it is characterised in that described terminal this
It is additionally provided with body：Power supply interface module.
4. portable video terminal according to claim 3 it is characterised in that described terminal this
It is additionally provided with body：Charging inlet.
5. a kind of video return system is it is characterised in that described video return system includes：Distal portion
Divide and local part；
Described local part includes：Local monitor client, the first router, fire wall and solution code division
Send out device；Described distal portions include：Portable video terminal and the second router；Described is portable
Video signal is passed sequentially through described the second router, the first via in private network of electric power system network by video terminal
Described local monitor client is sent to by device, or video signal is passed sequentially through in 3G network institute
Decoding distributor, fire wall and the first router stated are sent to described local monitor client；
Described portable video terminal includes：Terminal body, 3G card and portable button video camera；Institute
State terminal body be provided with central processing element, 3G antenna, antenna interface module, video coding chip,
Video interface module, network interface, wireless network switch and 3G card interface module；Described antenna interface module,
3G card and wireless network switch connect described central authorities by described 3G card interface module respectively and process core
Piece；The video signal that described portable button video camera shoots sequentially passes through described video interface module
And video coding chip is sent to described central processing element, described central processing element passes through described
The described video signal of network interface connection private network of electric power system network transmission or by described 3G antenna transmission institute
The video signal stated；
It is additionally provided with described terminal body：Network automatic identification chip, with described wireless network switch, in
Centre process chip and network interface connect respectively, and described network automatic identification chip is single-chip microcomputer or FPGA, is used for
Transmission speed according to 3G network selects to return video signal by 3G network or private network of electric power system network.
6. a kind of video retransmission method, is applied to the video return system described in claim 5, its feature
It is, described video retransmission method includes：
Video signal is obtained by described portable button video camera；
To the described encoding video signal operation obtaining, generate the described video signal after coding；
Current network speed is compared with default network speed threshold value, selects the described video after coding
The return network of signal；
Using the return network selecting, the described video signal after encoding is returned to local monitor client.
7. video retransmission method according to claim 6 is it is characterised in that work as the passback net of selection
When network is 3G network, using the return network selecting, the video signal after encoding is returned to local monitoring
Client, including：
Solved using the described video signal that described 3G network sends after coding to described decoding distributor
Code, generates decoded video signal；
Decoded described video signal passes through described electric power in described 3G network after address conversion
Decoded described video signal is returned to local monitor client by dedicated network.
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| CN104301668A (en) * | 2014-09-03 | 2015-01-21 | 菲力克斯电子（宁波）有限公司 | Solar wireless intelligent monitoring system and implement method thereof |
| CN105187690B (en) * | 2015-09-17 | 2019-08-09 | 北京华航无线电测量研究所 | Image processing method and device applied to guidance |
| WO2018027702A1 (en) * | 2016-08-10 | 2018-02-15 | 张北江 | Method and system for file allocation over dual network channels for security and monitoring |
| CN107959818B (en) * | 2016-10-17 | 2019-02-19 | 视联动力信息技术股份有限公司 | The data processing method of integrated terminal and integrated terminal |
| CN107592375A (en) * | 2017-09-14 | 2018-01-16 | 四川省电科互联网加产业技术研究院有限公司 | A kind of water resource parameter acquisition devices and method for smart city system |
| CN109803122A (en) * | 2019-01-22 | 2019-05-24 | 安徽博诺思信息科技有限公司 | A kind of dedicated business hall audio-visual synchronization method for monitoring and controlling of electric system |
| CN111147719B (en) * | 2019-12-26 | 2022-07-05 | 中国人民警察大学 | Wearable camera |
| CN112564281B (en) * | 2020-12-01 | 2023-03-21 | 广东电网有限责任公司江门供电局 | Monitoring background signal remote transmission device for transformer substation |
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