CN106653206A - Multi-purpose intelligent cable - Google Patents
Multi-purpose intelligent cable Download PDFInfo
- Publication number
- CN106653206A CN106653206A CN201611236047.3A CN201611236047A CN106653206A CN 106653206 A CN106653206 A CN 106653206A CN 201611236047 A CN201611236047 A CN 201611236047A CN 106653206 A CN106653206 A CN 106653206A
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- Prior art keywords
- optical fiber
- optical
- signal
- cable
- module
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/324—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising temperature sensing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/005—Power cables including optical transmission elements
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to the technical field of cable detection, in particular to a multi-purpose intelligent cable. The multi-purpose intelligent cable comprises a three-core power cable, a first optical fiber, a second optical fiber and a photoelectric conversion device, wherein the first optical fiber and the second optical fiber are arranged at the center of the three-core power cable; and the photoelectric conversion device is connected with the first optical fiber. According to the multi-purpose intelligent cable, temperature measurement and stress detection of various points of the three-core power cable are achieved; external disturbance is eliminated by adopting built-in optical fibers; and the optical fibers are arranged at the center of the three-core power cable, so that the uniformity degree and the accuracy of the measured temperature and stress are improved. Meanwhile, the service life of the optical fibers is prolonged. An implementation basis is provided for the aspects of power cable fault detection, current-carrying capacity control, anti-theft alarm and power communication.
Description
Technical field
The invention belongs to cable detection technical field, more particularly to a kind of multifunctional intellectual cable.
Background technology
Cable fault examination is mainly temperature detection and burglar alarm.Widely used technology has heat in temperature detection
Galvanic couple thermometric and optical fiber temperature-measurement.The principle of thermocouple temperature measurement is that the resistance of thermocouple can change with the change of temperature, with
The signal of temperature is converted to electric signal by this, and is measured.Thermocouple temperature measurement simple structure, cheap, technology maturation, but
Because thermocouple can only carry out point type thermometric, it is impossible to enter the on-line monitoring of trip temperature to whole piece cable run, so having certain
Limitation.Optical fiber have it is with low cost, by electromagnetic interference, small in volume, that certainty of measurement is high, be easy to lay etc. is excellent
Point, distributed optical fiber temperature measurement technology achieves that the circuit of logarithm kilometer carries out long term monitoring using an optical fiber, at this stage light
Laboratory stage being rested on fine cable for measuring temperature, practical application is less more.Existing optical fiber temperature-measurement cable is mainly to the joint of cable
Place detected, and by fibre optic installations in Exterior cable.It is primarily present problems with：
（1）Temperature of Power Cables raises main stand under load flow effect, and current-carrying capacity is raised can cause cable many places temperature to raise, only right
Cable connector part carries out thermometric and there is potential safety hazard；
（2）Power cable layer environment is complicated, and fibre optic installations easily cause to damage in Exterior cable to optical fiber physical arrangement；
（3）There is a plurality of cable power cable layer groove, fibre optic installations can be subject to other cables in Exterior cable measured temperature more
Temperature rise affects；
（4）Power cable bends, then certainty of measurement can be caused to decline；
（5）The dual-use function of thermometric, burglar alarm can not be realized.
The content of the invention
It is an object of the invention to provide a kind of multifunctional intellectual cable, realize three core power cable each points temperature measuring,
Stress detection and general communication function, using built-in fiber external interference is eliminated, and optical fiber is installed on into three-core cable central authorities, is carried
The uniformity coefficient and accuracy of measurement temperature and stress are risen.The service life of optical fiber is improved simultaneously.To power cable fault
Detection, current-carrying capacity control, burglar alarm, power communication aspect are provided and realize foundation.
For achieving the above object, the technical solution used in the present invention is：A kind of multifunctional intellectual cable, including three core electric power electricity
Cable, also including the first optical fiber, the second optical fiber and photoelectric conversion device；First optical fiber, the second fiber placing are in three core power cables
Center, photoelectric conversion device is connected with the first optical fiber.
In above-mentioned multifunctional intellectual cable, photoelectric conversion device includes optical module and electric module, optical module and the first light
Fibre connection, for launching optical signal and receiving the scattered light signal of setting, electric module is connected with optical module, for scattered light to be believed
Number it is converted into electric signal and realizes storage and report to the police；Photoelectric conversion device is installed on the initial segment of three core power cables.
In above-mentioned multifunctional intellectual cable, optical module includes laser instrument, the photo-coupler being sequentially connected, and optical coupling
The first optical filter, the second optical filter connected on device；First optical filter is connected with the first optical fiber, the second optical fiber, and second
Optical filter is connected with electric module；Laser instrument launches pulsed light, and photo-coupler realizes the branch of light and combining, the filter of first and second light
Ripple device selects the incident light and scattered light of respective settings wavelength.
In above-mentioned multifunctional intellectual cable, first and second optical filter is set using Raman scattering with Brillouin scattering, is used
In filtering out Stokes ratio signal, anti-Stokes scattering optical signal and Brillouin scattering optical signal.
In above-mentioned multifunctional intellectual cable, electric module includes：First photoelectric detector be sequentially connected the first amplifier,
One A/D sampling modules and the first SRAM module, the second photoelectric detector is sequentially connected the second amplifier, the 2nd A/D sampling modules
With the second SRAM module, the 3rd photoelectric detector is sequentially connected the 3rd amplifier, the 3rd A/D sampling modules, comparison module and report
Alert device；First, second and third photoelectric detector is connected with the second optical filter；First, second photoelectric detector is used to detect stoke
This scattered light signal and anti-Stokes scattering optical signal, and convert optical signal into voltage signal output, first and second amplifier
Export after the voltage signal for receiving is amplified, signal is carried out A/D conversions by first and second A/D sampling modules, and will output
In being stored in first and second SRAM module, for further calling；3rd photoelectric detector be used for detect Brillouin scattering optical signal,
And voltage signal output is converted optical signal into, and the 3rd amplifier is exported after the voltage signal for receiving is amplified, and the 3rd
Signal is carried out A/D conversions and is exported to send into comparison module by A/D sampling modules, and comparison module is used to compare output voltage values and set
The magnitude relationship of definite value, if output voltage values are more than setting value, starts alarm.
In above-mentioned multifunctional intellectual cable, three core power cables include that wire, filler, optical fiber place groove.
In above-mentioned multifunctional intellectual cable, wire includes：Core, internal shield, megohmite insulant, external shielding layer, protection
Set and metal screen layer；Core is made up of from copper cash or aluminum steel, internal shield semi-conducting material, is surrounded on core surface, with
Core equipotential, prevents from producing shelf depreciation between core and megohmite insulant, and megohmite insulant adopts crosslinked polyethylene, is surrounded on line
Outside core and internal shield, external shielding layer is made up of semi-conducting material, is surrounded on megohmite insulant surface, is prevented megohmite insulant and is protected
Shelf depreciation is produced between sheath, metal screen layer is surrounded on outside protective case, will leak out electric current and access grounded screen；Filler
From non-woven fabrics；Optical fiber places the axle center that groove is installed on three core power cables.
In above-mentioned multifunctional intellectual cable, the first optical fiber, the second optical fiber are positioned over optical fiber and place in groove.
In above-mentioned multifunctional intellectual cable, the second optical fiber is telecommunication optical fiber, for power communication, automation transmission.
Beneficial effects of the present invention：The temperature measuring and stress detection of three core power cable each points are realized, using built-in
Optical fiber eliminates external interference, and optical fiber is installed on into three-core cable central authorities, improve the uniformity coefficient of measurement temperature and stress with
Accuracy.The service life of optical fiber is improved simultaneously.Power cable fault detection, current-carrying capacity control, burglar alarm, electric power are led to
News aspect is provided realizes foundation.
Description of the drawings
Fig. 1 is the external structure schematic diagram of one embodiment of the invention；
Fig. 2 is the sectional view of one embodiment of the invention；
Fig. 3 is the internal structure schematic diagram of one embodiment of the invention；
Wherein, the core power cables of 1- tri-, the optical fiber of 2- first, the optical fiber of 3- second, 4- photoelectric conversion devices, 5- optical modules, 6- electricity moulds
Block, 7- wires, 8- fillers, 9- optical fiber places groove, 71- cores, 72- internal shields, 73- megohmite insulants, 74- external shields
Layer, 75- protective cases, 76- metal screen layers.
Specific embodiment
Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
The example of the embodiment is shown in the drawings, wherein from start to finish same or similar label represents identical or class
As element or the element with same or like function.Below with reference to Description of Drawings embodiment be it is exemplary, only
For explaining the present invention, and it is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter the part and setting of specific examples are described.They are only merely illustrative, and purpose is not
It is to limit the present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.This repetition be for
Simplify and clearly purpose, itself do not indicate the relation between discussed various embodiments and/or setting.Additionally, this
It is bright there is provided various specific techniques and the example of material, but those of ordinary skill in the art can be appreciated that other techniques
The use of applicability and/or other materials.In addition, fisrt feature described below second feature it " on " structure can be with
Be formed as the embodiment of directly contact including the first and second features, it is also possible to be formed in first and second including other feature
Embodiment between feature, such first and second feature may not be directly contact.
In description of the invention, it should be noted that unless otherwise prescribed and limiting, term " connected " " connection " should do extensively
Reason and good sense solution, can be joined directly together for example, it may be being mechanically connected or electrical connection, or the connection of two element internals,
Can also be indirectly connected to by intermediary, for those of ordinary skill in the related art, can be managed as the case may be
Solve the concrete meaning of above-mentioned term.
The present embodiment adopts the following technical scheme that, a kind of multifunctional intellectual cable, including three core power cables, also including first
Optical fiber, the second optical fiber and photoelectric conversion device；First optical fiber, the second fiber placing are in three core power cable centers, opto-electronic conversion
Device is connected with the first optical fiber.
Further, photoelectric conversion device includes optical module and electric module, and optical module is connected with the first optical fiber, for launching light
Signal simultaneously receives the scattered light signal of setting, and electric module is connected with optical module, for scattered light signal to be converted into into electric signal simultaneously
Realize storage and report to the police；Photoelectric conversion device is installed on the initial segment of three core power cables.
Further, optical module includes the first light connected on the laser instrument, photo-coupler, and photo-coupler being sequentially connected
Wave filter, the second optical filter；First optical filter is connected with the first optical fiber, the second optical fiber, the second optical filter and electric module
Connection；Laser instrument launches pulsed light, and photo-coupler realizes the branch of light and combining, and first and second optical filter selects respective settings
The incident light and scattered light of wavelength.
Further, first and second optical filter is set using Raman scattering with Brillouin scattering, for filtering out Stokes
Scattered light signal, anti-Stokes scattering optical signal and Brillouin scattering optical signal.
Further, electric module includes：First photoelectric detector be sequentially connected the first amplifier, an A/D sampling modules and
First SRAM module, the second photoelectric detector is sequentially connected the second amplifier, the 2nd A/D sampling modules and the second SRAM module,
3rd photoelectric detector is sequentially connected the 3rd amplifier, the 3rd A/D sampling modules, comparison module and alarm；First, second and third
Photoelectric detector is connected with the second optical filter；First, second photoelectric detector be used for detect Stokes ratio signal and
Anti-Stokes scattering optical signal, and voltage signal output is converted optical signal into, first and second amplifier is by the voltage for receiving
Signal is exported after being amplified, and signal is carried out A/D conversions by first and second A/D sampling modules, and output is stored in into first and second
In SRAM module, for further calling；3rd photoelectric detector is used to detect Brillouin scattering optical signal, and optical signal is converted
Export for voltage signal, the 3rd amplifier is exported after the voltage signal for receiving is amplified, the 3rd A/D sampling modules will be believed
Number carry out A/D conversions and export to send into comparison module, comparison module is used to compare the magnitude relationship of output voltage values and setting value,
If output voltage values are more than setting value, start alarm.
Further, three core power cables include that wire, filler, optical fiber place groove.
Further, wire includes：Core, internal shield, megohmite insulant, external shielding layer, protective case and metal screen layer；Line
Core is made up of from copper cash or aluminum steel, internal shield semi-conducting material, is surrounded on core surface, with core equipotential, prevents line
Shelf depreciation is produced between core and megohmite insulant, megohmite insulant adopts crosslinked polyethylene, is surrounded on outside core and internal shield,
External shielding layer is made up of semi-conducting material, is surrounded on megohmite insulant surface, prevents from producing local between megohmite insulant and protective case
Electric discharge, metal screen layer is surrounded on outside protective case, be will leak out electric current and is accessed grounded screen；Filler selects non-woven fabrics；Optical fiber
Place the axle center that groove is installed on three core power cables.
Further, the first optical fiber, the second optical fiber are positioned over optical fiber and place in groove.
Further, the second optical fiber is telecommunication optical fiber, for power communication, automation transmission.
The present embodiment is elaborated below, as shown in figure 1, a kind of multifunctional intellectual cable, including three core power cables
1st, the first optical fiber 2, the second optical fiber 3, photoelectric conversion device 4.
And, the first optical fiber 2, the second optical fiber 3, it is placed in the center of three core power cable 1.
And, three core power cables 1 include that wire 7, filler 8, optical fiber place groove 9；
And, wire 7 includes core 71, internal shield 72, megohmite insulant 73, external shielding layer 74, metal screen layer 75, filler
Matter 76.The material of core 71 is copper.Megohmite insulant 73 is crosslinked polyethylene.Filler 76 is non-woven fabrics.
And, photoelectric conversion device 4 is installed on the initial segment of three core power cable 1, including optical module 5 and electric module 6.
And, optical module 5 includes：Laser instrument, photo-coupler, first, second optical filter.Laser instrument can produce incidence
Light.
And, first, second optical filter uses Raman scattering and sets with Brillouin scattering, can filter out stoke
This scattered light signal, anti-Stokes scattering optical signal and Brillouin scattering optical signal.
And, electric module 6 include first, second, third photoelectric detector, first, second, third amplifier, first, the
2nd, the 3rd A/D sampling modules, first, second SRAM module, comparison module and alarm.First, second photoelectric detector can be examined
Stokes ratio signal and anti-Stokes scattering optical signal are surveyed, and converts optical signal into electric signal.3rd smooth electric-examination
The detectable Brillouin scattering optical signal of device is surveyed, and converts optical signal into electric signal.
And, electric module 6 includes first, second SRAM module, can be stored the electric signal of collection.
And, electric module 6 includes comparison module, can compare the size of the electric signal after conversion and setting value, and starts
Alarm.
And, the 3rd optical fiber is telecommunication optical fiber, can realize the communication functions such as power communication, automation transmission.
Specific embodiment is as follows, as shown in figure 1, the multifunctional intellectual cable of the present embodiment, including three core power cables 1,
First optical fiber 2, the second optical fiber 3, photoelectric conversion device 4.Photoelectric conversion device 4 is installed on the initial segment of three core power cables 1, bag
Include：Optical module 5 and electric module 6, optical module 5 is connected with the first optical fiber 2, the second optical fiber 3, can launch optical signal and receive setting
Scattered light signal, electric module 6 is connected with described optical module 5, scattered light signal can be converted into into electric signal and realize storage
Deposit and warning.
As shown in Fig. 2 three core power cables 1 include that wire 7, filler 8, optical fiber place groove 9.Wire 7 includes：Line
Core 71, internal shield 72, megohmite insulant 73, external shielding layer 74, protective case 75, metal screen layer 76.The material of core 71 is copper cash
Or aluminum steel, electric conductivity is good.The material of megohmite insulant 73 is crosslinked polyethylene, and insulating properties are good, are surrounded on described core
71 and described internal shield 72 outside.Internal shield 72 is made up of semi-conducting material, is surrounded on the surface of the core 71, with institute
The equipotential of core 71 is stated, prevents that shelf depreciation occurs between the core 71 and the megohmite insulant 73.External shielding layer 74 is by half
Conductor material is constituted, and is surrounded on the surface of the megohmite insulant 73, is prevented from being produced between megohmite insulant 73 and protective case 75 and is locally put
Electricity.Metal screen layer 76 is surrounded on outside the protective case 75, can be will leak out electric current and be accessed grounded screen.The material of filler 8 is
Non-woven fabrics.Optical fiber places groove 9 and is installed on the axle center of three core power cables, the first optical fiber 2, the second optical fiber 3, is positioned over optical fiber and puts
Put inside groove 9.
As shown in figure 3, optical module 5 includes laser instrument, photo-coupler, first, second optical filter.Laser instrument can launch arteries and veins
Wash off, described photo-coupler can cross the branch and combining for realizing light.First, second optical filter can select respective settings ripple
Long incident light and scattered light.Electric module 6 includes：First, second, third photoelectric detector, first, second, third amplifier,
First, second, third A/D sampling modules, first, second SRAM module, comparison module, alarm.First, second Photoelectric Detection
Device is able to detect that Stokes ratio signal and anti-Stokes scattering optical signal, and the 3rd photoelectric detector is able to detect that
Brillouin scattering optical signal, first, second photoelectric detector and the 3rd photoelectric detector can convert optical signal into voltage letter
Number output, first, second, third amplifier is electrically connected with first, second, third photoelectric detector, by the voltage signal for receiving
Export after being amplified, signal can be carried out A/D conversions by first, second, third A/D sampling modules, and by first, second A/
The output of D conversions is stored in first, second SRAM module, for further calling.The output of the 3rd A/D conversions is sent into and compares mould
Block, comparison module can compare the magnitude relationship of output voltage values and setting value, if output voltage values are more than setting value, can open
Dynamic alarm, reminds staff's cable to have stolen hidden danger.3rd optical fiber is telecommunication optical fiber.
The present embodiment when in use, realizes temperature measuring, stress detection and the general communication of three core power cable each points
Function, using built-in fiber external interference is eliminated, and optical fiber is installed on into three-core cable central authorities, improves measurement temperature and stress
Uniformity coefficient and accuracy.The service life of optical fiber is improved simultaneously.To power cable fault detection, current-carrying capacity control, prevent
Steal warning, power communication aspect to provide and realize foundation.
It should be appreciated that the part that this specification is not elaborated belongs to prior art.
Although the specific embodiment of the present invention above in association with Description of Drawings, those of ordinary skill in the art should
Understand, these are merely illustrative of, and various deformation or modification can be made to these embodiments, without departing from the original of the present invention
Reason and essence.The scope of the present invention is only limited by the claims that follow.
Claims (9)
1. a kind of multifunctional intellectual cable, including three core power cables, it is characterised in that also including the first optical fiber, the second optical fiber and
Photoelectric conversion device；First optical fiber, the second fiber placing connect in three core power cable centers, photoelectric conversion device and the first optical fiber
Connect.
2. multifunctional intellectual cable as claimed in claim 1, it is characterised in that photoelectric conversion device includes optical module and electric mould
Block, optical module is connected with the first optical fiber, for launching optical signal and receiving the scattered light signal of setting, electric module and optical module phase
Connect, for scattered light signal being converted into into electric signal and being realized storage and is reported to the police；Photoelectric conversion device is installed on three core electric power electricity
The initial segment of cable.
3. multifunctional intellectual cable as claimed in claim 2, it is characterised in that optical module includes laser instrument, the light being sequentially connected
The first optical filter, the second optical filter connected on coupler, and photo-coupler；First optical filter and the first optical fiber,
Second optical fiber connects, and the second optical filter is connected with electric module；Laser instrument launches pulsed light, photo-coupler realize the branch of light with
Combining, first and second optical filter selects the incident light and scattered light of respective settings wavelength.
4. multifunctional intellectual cable as claimed in claim 3, it is characterised in that first and second optical filter using Raman scattering with
Brillouin scattering sets, for filtering out Stokes ratio signal, anti-Stokes scattering optical signal and Brillouin scattering
Optical signal.
5. multifunctional intellectual cable as claimed in claim 3, it is characterised in that electric module includes：First photoelectric detector is successively
Connect the first amplifier, an A/D sampling modules and the first SRAM module, the second photoelectric detector is sequentially connected the second amplification
Device, the 2nd A/D sampling modules and the second SRAM module, the 3rd photoelectric detector is sequentially connected the 3rd amplifier, the 3rd A/D samplings
Module, comparison module and alarm；First, second and third photoelectric detector is connected with the second optical filter；First, second smooth electric-examination
Surveying device is used to detect Stokes ratio signal and anti-Stokes scattering optical signal, and converts optical signal into voltage signal
Output, first and second amplifier is exported after the voltage signal for receiving is amplified, and first and second A/D sampling modules enter signal
Row A/D is changed, and output is stored in first and second SRAM module, for further calling；3rd photoelectric detector is used to detect
Brillouin scattering optical signal, and voltage signal output is converted optical signal into, the 3rd amplifier enters the voltage signal for receiving
Row is exported after amplifying, and signal is carried out A/D conversions and exported to send into comparison module by the 3rd A/D sampling modules, and comparison module is used for
Relatively output voltage values and the magnitude relationship of setting value, if output voltage values are more than setting value, start alarm.
6. multifunctional intellectual cable as claimed in claim 2, it is characterised in that three core power cables include wire, filler,
Optical fiber places groove.
7. multifunctional intellectual cable as claimed in claim 6, it is characterised in that wire includes：Core, internal shield, insulant
Matter, external shielding layer, protective case and metal screen layer；Core is made up of from copper cash or aluminum steel, internal shield semi-conducting material, ring
Core surface is around in, with core equipotential, prevents from producing shelf depreciation between core and megohmite insulant, megohmite insulant is using crosslinking
Polyethylene, is surrounded on outside core and internal shield, and external shielding layer is made up of semi-conducting material, is surrounded on megohmite insulant surface,
Prevent from producing shelf depreciation between megohmite insulant and protective case, metal screen layer is surrounded on outside protective case, will leak out electric current and connect
Enter grounded screen；Filler selects non-woven fabrics；Optical fiber places the axle center that groove is installed on three core power cables.
8. multifunctional intellectual cable as claimed in claim 7, it is characterised in that the first optical fiber, the second optical fiber are positioned over optical fiber and put
Put in groove.
9. multifunctional intellectual cable as claimed in claim 1, it is characterised in that the second optical fiber is telecommunication optical fiber, logical for electric power
News, automation transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236047.3A CN106653206A (en) | 2016-12-28 | 2016-12-28 | Multi-purpose intelligent cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236047.3A CN106653206A (en) | 2016-12-28 | 2016-12-28 | Multi-purpose intelligent cable |
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| Publication Number | Publication Date |
|---|---|
| CN106653206A true CN106653206A (en) | 2017-05-10 |
Family
ID=58831972
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| CN201611236047.3A Pending CN106653206A (en) | 2016-12-28 | 2016-12-28 | Multi-purpose intelligent cable |
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| WO2010004323A1 (en) * | 2008-07-08 | 2010-01-14 | Bae Systems Plc | Electrical circuit assemblies and structural components incorporating same |
| CN101750572A (en) * | 2009-12-15 | 2010-06-23 | 天津市电力公司 | Real-time safety monitoring method and system for high-voltage underground long-distance power supply cable |
| CN201788759U (en) * | 2010-09-14 | 2011-04-06 | 上海电缆研究所 | Intelligent type overhead transmission conductor and monitoring system thereof |
| CN103424140A (en) * | 2012-05-10 | 2013-12-04 | 国家电网公司 | Carbon fiber photoelectric composite lead wire online monitoring system |
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Application publication date: 20170510 |
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