CN106657930A - Image monitoring device and method of power transmission line - Google Patents
Image monitoring device and method of power transmission line Download PDFInfo
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- CN106657930A CN106657930A CN201710091798.9A CN201710091798A CN106657930A CN 106657930 A CN106657930 A CN 106657930A CN 201710091798 A CN201710091798 A CN 201710091798A CN 106657930 A CN106657930 A CN 106657930A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 88
- 238000012806 monitoring device Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 230000005059 dormancy Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 75
- 238000004891 communication Methods 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 18
- 230000006870 function Effects 0.000 claims description 17
- 238000004146 energy storage Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000007958 sleep Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 241001062009 Indigofera Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
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Abstract
The invention discloses an image monitoring device and method of a power transmission line. The device is realized by use of a mode of combining a system on chip (SoC) and a camera, wherein the SoC is connected with the camera; the camera is used for acquiring a power transmission line image in real time under the control of the SoC, and sending the acquired power transmission line to the SoC; the SoC is used for controlling the camera to acquire the data line image in real time, encoding the power transmission line image acquired from the image, and then wirelessly outputting the encoded image. Furthermore, a dormancy control module is arranged in the SoC to enable the SoC to be dormant, thereby lowering the power consumption. Since the SoC is small in power consumption and small in volume, the power consumption and the cost can be lowered, the installation is easy, and the integration level is high when the SoC and the camera are together erected on the power transmission line to perform the image monitoring.
Description
Technical field
The present invention relates to a kind of electricity transmission line monitoring method and monitoring device, belong to transmission line of electricity on-line monitoring field.
Background technology
In order to carry out the transmission of electric power, need to erect power transmission lines at transmission two ends, transmission line of electricity is divided into built on stilts defeated
Electric line and cable circuit etc..In order to ensure the safe transmission of electric power, it is necessary to ensure the security of transmission line of electricity, so needing
Whether real-time monitoring transmission line of electricity is in normal working condition.Monitored using the realtime graphic of transmission line of electricity, it is possible to solve
This problem.
At present, transmission line of electricity is carried out when realtime graphic is monitored using transmission line of electricity image monitoring device, generally, the transmission of electricity
Circuit image monitoring device realized by the way of video camera+wireless communication module, can specifically adopt video camera+Internet video
Server (DVS, digital video server) realization, wherein, connected by Q9 or bnc interface between video camera and DVS,
For imaging to transmission line of electricity in real time, the realtime graphic of transmission line of electricity is obtained, be transferred to DVS；DVS have Image Coding and
Effect is wirelessly transferred, for receiving the realtime graphic of transmission line of electricity and being processed, if monitored by the realtime graphic defeated
There is exception in electric line, then send alarm signal by network.
But, image monitoring is carried out to transmission line of electricity using said apparatus and is suffered from the drawback that：
1) described device power dissipation ratio is larger and volume weight is larger, relatively costly.DVS power consumptions in described device typically exist
6 watts or so, and dormancy cannot be carried out and reduce power consumption, the video camera power consumption in described device does not have typically at 10 watts or so yet
There is low-power consumption, therefore the equipment normal work is higher to the power requirement of power supply, in order to meet 30 day working time
Require, when powering for described device, more using the larger lead-acid battery of volume capacity or colloid battery, be it is battery powered too
The power of positive energy plate demand is also corresponding larger, and the cost that result in described device is higher.
2) described device installs trouble, bothersome laborious.The equipment volume is big and weight is big, the weight of general complete equipment
More than 40 kilograms can be reached, to be installed on higher transmission line of electricity, transmission line of electricity is typically erected on iron tower of power transmission line,
At least need 3～4 people to coordinate to complete and especially more to project in some remote mountain area inferior positions by instruments such as skiddings.
3) described device integrated level is poor, and for each function of realizing monitoring, described device needs multiple different functions
Together, design cost is high for block combiner.Described device is functionally generally comprised：Digital Signal Processing with encoding and decoding
(DSP) or several parts such as ARM chips, communications module, storage chip, analog video camera and power-supply system, module is belonged to
Formula is combined, separate between each functional module of described device, and design cost is high and integrated level is low.
Therefore, how when image monitoring is carried out to transmission line of electricity, there is provided low-power consumption and low cost, be easily installed and
The high power transmission line monitoring device of integrated level becomes a problem demanding prompt solution.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of image monitoring device of transmission line of electricity, and the device can be to defeated
When electric line carries out image monitoring, power consumption and cost are reduced, it is easy to install and integrated level is high.
The embodiment of the present invention also provides a kind of image monitoring method of transmission line of electricity, and the method can entered to transmission line of electricity
During row image monitoring, power consumption and cost are reduced, it is easy to install and integrated level is high.
According to above-mentioned purpose, what the present invention was realized in：
A kind of image monitoring device of transmission line of electricity, the monitoring device is erected on transmission line of electricity, including：Solar energy is supplied
Electric unit (101), on-chip system SoC (102) and camera (103), SoC (102) is connected with camera (103), wherein,
Solar powered unit (101), for be SoC (102) and camera (103) power supply；
Camera (103), for getting transmission line of electricity image in real time under the control of SoC (102), will be acquired defeated
Electric line image is sent to SoC (102)；
SoC (102), for controlling camera data circuit image is obtained in real time, to being transmitted electricity from camera (103)
After circuit image is encoded, wireless output.
A kind of image monitoring method of transmission line of electricity, including：
Monitoring device includes SoC, camera and solar energy functional unit, and SoC is connected with camera, SoC and camera by
Solar powered unit is powered, and monitoring device is set up on transmission line of electricity；
SoC control cameras obtain in real time transmission line of electricity image；
SoC is encoded acquired transmission line of electricity image, is wirelessly exported.
As can be seen from the above scheme, device and method provided in an embodiment of the present invention, using on-chip system (SoC)+take the photograph
As the mode of head realizes that SoC is connected with camera, camera is used to get transmission line of electricity image in real time under the control of SoC,
Acquired transmission line of electricity image is sent into SoC, SoC is used to controlling camera obtaining data circuit image in real time, to from taking the photograph
Encoded as obtaining transmission line of electricity image in head, wireless output.Further, there is dormancy control module in SoC, can be with
So that SoC carries out dormancy, power consumption is reduced.Due to the small power consumption and small volume of SoC, set up on transmission line of electricity together with camera
When carrying out image monitoring, power consumption and cost can be reduced, it is easy to install and integrated level is high.
Description of the drawings
Fig. 1 is the image monitoring device structural representation of transmission line of electricity provided in an embodiment of the present invention；
Fig. 2 is the image monitoring method flow chart of transmission line of electricity provided in an embodiment of the present invention；
Fig. 3 is the image monitoring method specific example flow chart of transmission line of electricity provided in an embodiment of the present invention.
Reference
101- solar powered units
1011- solar panels
1012- energy-storage modules
1013- power-converting circuits
102-SoC
1021- central processing units
1022- IMAQs and coding module
1023- Base Band Unit
1024- radio frequency units
1025- dormancy control modules
1026-GPS modules
1027- wireless communication modules
1028-USB interfaces
103- cameras
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, develop simultaneously referring to the drawings embodiment, right
The present invention is described in further detail.
In order to when image monitoring is carried out to transmission line of electricity, reduce power consumption and cost, it is easy to install and integrated level is high, this
Bright embodiment realizes that SoC is connected with camera by the way of SoC+ cameras, and camera is used under the control of SoC in real time
Transmission line of electricity image is got, acquired transmission line of electricity image is sent into SoC, SoC is obtained in real time for controlling camera
Data circuit image, encodes to obtaining transmission line of electricity image from camera, wireless output.
Further, there is dormancy control module in SoC, SoC can be caused to carry out dormancy, reduce power consumption.SoC is by too
Positive energy power supply unit is powered.
When the embodiment of the present invention carries out image monitoring to transmission line of electricity, due to the small power consumption and small volume of SoC, with shooting
When first erection carries out image monitoring on transmission line of electricity, power consumption and cost can be reduced, it is easy to install and integrated level is high.
Fig. 1 is the image monitoring device structural representation of transmission line of electricity provided in an embodiment of the present invention, and the device is set up
To on transmission line of electricity, including：Solar powered unit 101, SoC102 and camera 103, SoC102 is connected with camera 103,
Wherein,
Solar powered unit 101, for being that SoC102 and camera 103 are powered；
Camera 103, for getting transmission line of electricity image in real time under the control of SoC102, by acquired power transmission line
Road image is sent to SoC102；
SoC102, for controlling camera data circuit image is obtained in real time, to obtaining transmission line of electricity from camera 103
Image is encoded, wireless output.
In the structure shown here, the solar powered unit 101 also includes：Solar panels 1011, energy-storage module 1012 and electricity
Source conversion circuit 1013, wherein,
Solar panels 1011 are collected after solar energy, solar energy is sent into energy-storage module 1012 and is stored, power conversion
The energy of storage is converted into electric energy by circuit 1013, is SoC102 and camera 103 is powered.
In the structure shown here, SoC102 specifically includes central processing unit 1021, IMAQ and coding module 1022, base band list
Unit 1023 and radio frequency unit 1024, central processing unit 1021 is used to control IMAQ and coding module 1022, Base Band Unit
1023 and radio frequency unit 1024, wherein, IMAQ is used for the power transmission line to obtaining from camera 103 with coding module 1022
Road image is acquired and encodes, and transmission line of electricity image is converted into the picture or video of setting form, and Base Band Unit 1023 is used
In the demodulation of wireless signal in mobile network, descrambling, despreading and decoding effort is completed, and the data signal for completing will be finally decoded
Transmission central processing unit 1021；Radio frequency unit 1024 is used for the transmission of electricity for being encoded under the control of central processing unit 1021
Circuit image is wirelessly exported.
In the structure shown here, dormancy control module 1025 is also included in the SoC102, in central processing unit 1021
Control is lower to cause SoC102 to be changed in park mode and mode of operation.Here, when SoC102 receives control instruction,
SoC102 can be controlled to be changed in park mode and mode of operation.
In the structure shown here, global positioning system (GPS) module 1026 and wireless communication module are also included in the SoC102
1027, it is respectively used under the control of central processing unit 1021, the SoC102 is positioned and radio communication.Here,
The wireless communication module 1027 can be using WiFi or bluetooth approach.
In the structure shown here, USB (USB) interface 1028 is also included in the SoC, for carrying out to the SoC
Debugging or or provide camera 103 access.
In the structure shown here, memory cell 1029 is also included in the SoC, for carrying out to the transmission line of electricity image after coding
After storage, it is then forwarded to Base Band Unit 1023 and processes.
In the structure shown here, by mobile Industry Processor (MIPI) interface connection between the SoC102 and camera 103.
It will be seen from figure 1 that in SoC, combine the high-speed communication mobile broadband technology of such as 3G or 4G with it is powerful
Multimedia function, 3-D graphic function and GPS-Engine, can bring high processing speed, extremely low power consumption for monitoring device
And multimedia true to nature and comprehensive connectivity.
Be integrated with SoC application processor (AP, Application Processor) and BBP (BP,
Baseband Processor), including at Base Band Unit, radio frequency unit, memory cell, GPS module, IMAQ and coding
The functional modules such as reason, WiFi, bluetooth and/or USB interface.
Base Band Unit in SoC includes the disposal ability of various base band standards, base band standard include being not limited to GSM,
The Base-Band Processings such as CDMA, CDMA2000, TD-WCDMA and LTE, are identified by Base Band Unit and are processed, and meet various nets
The demand of network standard.The transmission line of electricity image monitoring device proposed in background technology processes standard, device using single signal
Built-in type system and wireless module are different, therefore production management is more bothered.And adopt prison provided in an embodiment of the present invention
Surveying device can then not differentiate between system and hardware, can be managed collectively, convenient to realize.
The USB interface having in SoC can be easy to design debugging, while the interface also can as Special debugging interface
The camera for enough adapting to USB interface is accessed, and realizes dual camera or multi-cam extension shoot function；The WiFi and bluetooth of standard
Interface both can be used for extension and access other smart machines, again can be used as debugging interface.
MIPI interfaces in SoC provide access for camera, and the IMAQ in SoC can be in central authorities with coding module
The image that camera is collected is converted to the picture or video format of setting form, storage to storage mould under the control of processor
In block, the server platform specified then is sent to according to the server address of setting.
SoC supports various embedded systems, and integrated AP can develop various different application designs, with good two
Secondary development ability, while SoC itself has very strong storage capacity and extension storage ability, can store substantial amounts of data letter
Breath.
SoC itself has lower power consumption in the normal mode of operation, can control it by internal register and enter low work(
Consumption park mode, by the Base Band Unit in SoC, memory cell, GPS module, IMAQ and coding module, WiFi module and indigo plant
The modules such as tooth are turned off, and radio frequency unit only has partial function to maintain, and power consumption is less than percent under normal mode under park mode
One, it is only necessary to which several milliamperes of standby current is maintained；SoC can be rapid under Timer Controlling by outer triggering signal or internally
Switch to mode of operation.
Fig. 2 is the image monitoring method flow chart of transmission line of electricity provided in an embodiment of the present invention, and it is concretely comprised the following steps：
Step 201, monitoring device include SoC, camera and solar energy functional unit, and SoC is connected with camera, SoC and
Camera is powered by solar powered unit, and monitoring device is set up on transmission line of electricity；
Step 202, SoC control cameras obtain in real time transmission line of electricity image；
After step 203, SoC are encoded acquired transmission line of electricity image, wirelessly export.
In the method, it is described to be encoded to：Transmission line of electricity image is converted into the picture or video of setting form.
In the method, the wireless mode is output as：Transmission line of electricity image after coding is carried out after baseband modulation, to adopt
Wirelessly exported with RF-wise.
The method also includes：SoC has sleep mode, is changed in park mode and mode of operation.
The method also includes：SoC has positioning function and radio communication function.
The method also includes：There is USB interface in SoC, the access of camera 103 is debugged or provided to the SoC.
Hereinafter lift a specific example explanation.
In the specific example, the SoC can adopt the chip of model MSM8916 of Qualcomm to realize, in SoC
Middle configuration client identification module (SIM) card.The SoC runs Android system, and in SoC USB module, WiFi module, figure are integrated with
As collection and coding unit and 4G communication modules, LTE standards are supported, while supporting GPS location, integrated taking the photograph with MIPI interfaces
As head is 8,000,000 pixels.
Fig. 3 is the image monitoring method specific example flow chart of transmission line of electricity provided in an embodiment of the present invention, its concrete step
Suddenly it is：
Step 301～303, the image monitoring device of transmission line of electricity are actuated for initialization, and SoC therein starts channel radio
Communication network, when described device carries out communication network check and correction automatically, obtains the clock of present communications network, while and Current Communication Network
FTP (FTP) server of network carries out information exchange, obtains the various parameters of server-side devices；
Various parameters include the configuration parameters such as server-side devices switch time, number of times of taking pictures, picture pixels, according to parameter
The working method of setting is timed to be taken pictures and transmits.
In this step, picture of taking pictures is stored as jpeg format, sets different pictures according to different customer demands big
Little and resolution ratio etc.；
In this step, the internal storage space of SoC can set, such as be 1G, and can extend large capacity I F cards,
Maximum 128G spaces；
After the completion of step 304, SoC configurations, park mode is put into, at utmost saves electric energy；
When step 305～307, SoC receive the teleinstruction of communication network transmission, it is waken up, is clapped according to instruction triggers
According to or triggering timing take pictures；
Step 308, SoC start camera and take pictures；
In this step, monitoring device is when mounted according to different scene adjustment photo angles, the WiFi interfaces of SoC with
Field adjustable instrument is attached, and can in real time get shooting picture and be shown on hand-held debugging acid screen so that be existing
It is more convenient that field is installed；
After step 309～310, SoC are encoded acquired transmission line of electricity image, wirelessly export and sentence
It is disconnected whether to be transmitted, if not, continue to transmit, if it is, return to step 304.
Monitoring device using the embodiment of the present invention is low in energy consumption, therefore the energy-storage module for configuring is 10AH LiFePO4s electricity
Pond, volume weight is significantly reduced compared with the plumbic acid or colloid battery used using the monitoring device of background technology, and the working time is but
More than 30 days can be reached.
As can be seen that using monitoring device provided in an embodiment of the present invention, greatly reducing design cost；While integrated core
The design of piece also further reduces the capacity of monitoring device volume and peripheral power supply so that monitoring device accomplishes that integration sets
Meter.AP+BP is integrated with monitoring device so that monitoring device resource is more rich, image procossing is more convenient.
SoC in the embodiment of the present invention is one and is integrated with signal processing function, radio frequency, base band and image collecting function
With the on-chip system of the function such as dormancy control, rather than it is using being integrated with the piece of function of can directly having used
System, wherein, signal processing function is completed using Base Band Unit and radio frequency unit, and image collecting function is by IMAQ and coding mould
Block is completed.SoC provided in an embodiment of the present invention is also further arranged and is integrated with radio communication function and sleep mode, so that
Using convenient.The present invention is not limited only to using the power supply mode of solar recharging, and other are as sensed power taking, alternating current-direct current power taking
Should be included within the scope of the present invention etc. power supply mode.
Preferred embodiment is lifted above, the object, technical solutions and advantages of the present invention is further described, institute
It should be understood that presently preferred embodiments of the present invention is the foregoing is only, it is all the present invention's not to limit the present invention
Spirit and principle within, any modification, equivalent and improvement for being made etc., should be included in protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of image monitoring device of transmission line of electricity, it is characterised in that the monitoring device is erected on transmission line of electricity, bag
Include：Solar powered unit (101), on-chip system SoC (102) and camera (103), SoC (102) and camera (103) phase
Connect, wherein,
Solar powered unit (101), for be SoC (102) and camera (103) power supply；
Camera (103), for getting transmission line of electricity image in real time under the control of SoC (102), by acquired power transmission line
Road image is sent to SoC (102)；
SoC (102), for controlling camera data circuit image is obtained in real time, to obtaining transmission line of electricity from camera (103)
After image is encoded, wireless output.
2. device as claimed in claim 1, it is characterised in that the solar powered unit (101) also includes：Solar panels
(1011), energy-storage module (1012) and power-converting circuit (1013), wherein,
Solar energy (1011) is collected after solar energy, solar energy is sent into energy-storage module (1012) and is stored, power conversion electricity
The energy of storage is converted into electric energy by road (1013), is SoC (102) and camera (103) power supply.
3. device as claimed in claim 1, it is characterised in that SoC (102) includes central processing unit (1021), IMAQ
With coding module (1022), Base Band Unit (1023) and radio frequency unit (1024), wherein,
Central processing unit (1021) is for controlling IMAQ and coding module (1022), Base Band Unit (1023) and radio frequency unit
(1024)；
IMAQ and coding module (1022) for being acquired to the transmission line of electricity image obtained from camera (103) and
Coding, by transmission line of electricity image the picture or video of setting form are converted to；
Base Band Unit (1023) for completing mobile network in the demodulation of wireless signal, descrambling, despreading and decoding effort, and will most
Data signal transmission central processing unit (1021) for completing is decoded eventually；
Radio frequency unit (1024) under the control of central processing unit (1021) by the transmission line of electricity image for being encoded without
Line is exported.
4. the device as described in claim 1 or 3, it is characterised in that also include dormancy control module in the SoC (102)
(1025), under the control of central processing unit (1021) cause SoC (102) park mode and mode of operation carry out turn
Change.
5. device as claimed in claim 4, it is characterised in that also include global position system GPS mould in the SoC (102)
Block (1026) and wireless communication module (1027), are respectively used under the control of central processing unit (1021), to the SoC
(102) positioned and radio communication.
6. device as claimed in claim 5, it is characterised in that also include general-purpose serial bus USB interface in the SoC
(1028), for the SoC is debugged or or provide camera (103) access.
7. device as claimed in claim 5, it is characterised in that also include memory cell (1029) in the SoC, for compiling
Transmission line of electricity image after code is stored, and is then forwarded to Base Band Unit (1023) process.
8. a kind of image monitoring method of transmission line of electricity, it is characterised in that include：
Monitoring device includes SoC, camera and solar energy functional unit, and SoC is connected with camera, and SoC is with camera by the sun
Energy power supply unit is powered, and monitoring device is set up on transmission line of electricity；
SoC control cameras obtain in real time transmission line of electricity image；
SoC is encoded acquired transmission line of electricity image, is wirelessly exported.
9. method as claimed in claim 8, it is characterised in that described to be encoded to：Transmission line of electricity image is converted to and is set
The picture or video of the formula that fixes；
The wireless mode is output as：Transmission line of electricity image after coding is carried out after baseband modulation, to carry out using RF-wise
Wireless output.
10. method as claimed in claim 9, it is characterised in that the method also includes：SoC has sleep mode, in dormancy mould
Formula and mode of operation are changed；
Or/and SoC has positioning function and radio communication function；
Or/and there is USB interface in SoC, the access of camera 103 is debugged or provided to the SoC.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091798.9A CN106657930A (en) | 2017-02-21 | 2017-02-21 | Image monitoring device and method of power transmission line |
| PCT/CN2018/075054 WO2018153234A1 (en) | 2017-02-21 | 2018-02-02 | Graphical power line monitoring device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091798.9A CN106657930A (en) | 2017-02-21 | 2017-02-21 | Image monitoring device and method of power transmission line |
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| WO2018153234A1 (en) * | 2017-02-21 | 2018-08-30 | 山东信通电子股份有限公司 | Graphical power line monitoring device and method |
| CN110072040A (en) * | 2019-04-22 | 2019-07-30 | 东华大学 | A kind of image collecting device based on raspberry pie |
| CN110730352A (en) * | 2019-11-12 | 2020-01-24 | 智洋创新科技股份有限公司 | Power transmission line image decoding method based on variational self-coding |
| CN110816458A (en) * | 2019-10-24 | 2020-02-21 | 上海势航网络科技有限公司 | Vehicle blind area monitoring system, device and control method thereof |
| CN110855943A (en) * | 2019-11-15 | 2020-02-28 | 福建和盛高科技产业有限公司 | Transmission line video image class monitoring devices based on N2N penetrates technique |
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| CN110855943A (en) * | 2019-11-15 | 2020-02-28 | 福建和盛高科技产业有限公司 | Transmission line video image class monitoring devices based on N2N penetrates technique |
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| WO2018153234A1 (en) | 2018-08-30 |
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