CN109300605A - Wisdom cable - Google Patents
Wisdom cable Download PDFInfo
- Publication number
- CN109300605A CN109300605A CN201811185767.0A CN201811185767A CN109300605A CN 109300605 A CN109300605 A CN 109300605A CN 201811185767 A CN201811185767 A CN 201811185767A CN 109300605 A CN109300605 A CN 109300605A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- cable
- metal tube
- optical
- fixed point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 claims abstract description 51
- 230000003287 optical effect Effects 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 208000025274 Lightning injury Diseases 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 3
- 239000012928 buffer substance Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003491 array Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 210000003518 stress fiber Anatomy 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- 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
- H01B7/326—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising pressure 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
- H01B7/328—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising violation sensing means
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Wisdom cable, including centrally located weak optical fiber Bragg grating temperature strain optical cable twist the steel core wire being enclosed in outside the weak optical fiber Bragg grating temperature strain optical cable, the aluminum stranded conductor being wrapped in outside steel core wire.The weak optical fiber Bragg grating temperature strain optical cable, metal tube including outer layer, the superweak optical fiber optical grating array being fixed in metal tube；The inner wall of metal tube is equipped with fixed point and buried regions, and superweak optical fiber optical grating array and metal tube are fixed in the fixed point and buried regions；There is superweak grating strain transducer in buried regions, there is superweak grating temperature sensor between adjacent fixed point.The wisdom construction of cable is simple, and can be used for the measurement of multi-parameter, can be good in transmission line of electricity icing, the security risks such as wave and be struck by lightning and be monitored, there is important application value in transmission line of electricity monitoring field.
Description
Technical field
A kind of wisdom cable of the present invention, is related to the monitoring field of aerial cable.
Background technique
Overhead transmission line has become the important component of power transmission system, but the operation item of overhead transmission cables
Part is severe, not only needs to pass through High aititude, more accumulated snow, the area for repeating ice, also suffers from the rings such as bad weather such as strong wind, thunderstorm
The influence of border factor because of icing, the transmission overhead line tripping caused by factors such as waves and is struck by lightning or fault of stop is sent out again and again
It is raw, seriously affect the safe and stable operation of electric system.Therefore, aerial cable is monitored on-line, timely early warning and dimension
Shield, avoids the major accidents such as line fault and tower, has great importance.
Traditional transmission line of electricity on-line monitoring method, which is mainly utilized, arranges tension sensor in power cable to monitor transmission of electricity
The icing of route monitors waving for transmission line of electricity using acceleration transducer is arranged on power cable, utilizes Current Voltage
Sensor is struck by lightning to monitor.Above-mentioned monitoring method is easy the case where being generated wrong report by electromagnetic interference, and monitoring range is limited, nothing
Method meets the on-line monitoring of power cable in transmission line of electricity.(Zhang Xuping, Wu Jianling, Dan Yuanyuan wait to be based on distributed light to document
The smart power grid power transmission line of fine sensing technology monitors [J] photoelectron technology, 2017 (4): 221-229. on-line) propose one
Kind monitors power cable on-line using the OTDR (optical time domain reflection technology) in optical fiber sensing technology, by optical fiber
The monitoring to temperature in power cable and strain and vibration is realized in the demodulation of Brillouin and rayleigh backscattering signal.But cloth
In deep pool scattering it is all sensitive to temperature and strain, there are problems that cross influence, and Rayleigh intensity is weaker, precision is low.Optical fiber light
Grid have precision is high, and response is fast etc. compared to Rayleigh scattering type, Brillouin scattering type and Raman scattering type optical fiber sensing system
Advantage.But common strong fiber grating, there are at high cost, encapsulation is complicated, and the few disadvantage of serial number is chiefly used in spot measurement.Text
Offer (transmission line of electricity aeolian vibration on-line monitoring method [J] the China Power of the bright of Zhao Long, Huang Xinbo, Zhu Yong based on FBG, 2015,
48 (3): 27-31.) it gentle breeze is waved at single sensor using optical fiber Bragg grating encapsulation is monitored.Document (Jiang builds, Li Chengrong,
Malaysian is bright, wait coated by ice of overhead power transmission line monitoring use FBG tension sensor development [J] high-voltage technology, 2010,36
(12): 3028-3034. the pulling force of power cable is monitored when) also using single sensor to icing, cannot achieve
The distributed monitoring of power cable.
Summary of the invention
For existing power cable on-line monitoring range is small, precision is low, response speed is slow, can not be carried out join simultaneously more
The problems such as several measurements.The invention proposes a kind of wisdom cables, cross and weak optical fiber Bragg grating is embedded into power cable, realize defeated
The distributed on line monitoring of electric line.
The technical scheme adopted by the invention is as follows:
Wisdom cable, including centrally located weak optical fiber Bragg grating temperature strain optical cable, twisting are enclosed in the weak fiber light
Steel core wire outside grid temperature strain optical cable, the aluminum stranded conductor being wrapped in outside steel core wire.
The weak optical fiber Bragg grating temperature strain optical cable, metal tube including outer layer, the superweak optical fiber being fixed in metal tube
Grating array；The inner wall of metal tube is equipped with fixed point and buried regions, and superweak optical fiber optical grating array and metal tube are in the fixed point
It is fixed with buried regions；There is superweak grating strain transducer in buried regions, there is superweak grating temperature sensor between adjacent fixed point.
Fiber lengths between two neighboring fixed point or adjacent fixed point and buried regions are greater than or equal to metal pipe range
The 101% of degree.There is 1% redundancy when optical cable Tensile, on sensor fibre, stress will not pass through fixed point or buried regions pass
It is delivered at temperature sensing point, so that optical cable can be in order to avoid stress thermometric.And 1% redundant optical fiber can satisfy even if in larger stress
Under the action of, the elongation of metal tube is also impossible to reach 1%, and temperature sensing point not will receive stress influence always.
The steel core linear diameter is identical as weak optical fiber Bragg grating temperature strain optic cable diameter, surrounds the weak optical fiber Bragg grating temperature
Strain optical cable is twisted encirclement in a helical pattern and is formed；The aluminum stranded conductor twists encirclement around the steel core wire in a helical pattern
It is formed.
The metal tube is stainless steel tube, and using machine cans, laser welding is formed.
The length of the buried regions is 30mm, and thickness is less than 2mm, the about 100 μ ε of pretension of strain sensing point.
The fixed point, buried regions are uv-curable glue, two neighboring fixed point or adjacent fixed point and buried regions it
Between spacing be 250mm.
Heat-conducting buffer substance is also filled in the metal tube.Heat-conducting buffer substance can be used for protecting optical fiber, avoid it straight
It connects and is contacted with metal pipe-wall, the service life of extended fiber；Heat-conducting buffer substance can also play the role of quick conductive simultaneously,
Improve the response speed of temperature sensing point.
Several complete same or wavelength-division multiplex optical fiber optical grating arrays, the coating of array are carved on the superweak optical fiber optical grating array
Layer is modified polyacrylate, and thermal expansion coefficient is 5.5 × 10-7/ DEG C, with a thickness of 20~30um.
A kind of wisdom cable of the present invention, has the advantages that
1), measurement range is wide, and precision is high:
Weak optical fiber Bragg grating sensor array uses quasi-distributed measurement, and the spacing between adjacent two sensing point is small, space point
Resolution is high, realizes high-precision measurement for each position on transmission line of electricity.
2), measuring multiple parameters:
It flexibly sets two adjacent gratings of weak optical fiber Bragg grating array to survey ess-strain grating and testing temperature grating,
Cable upper stress can be strained and temperature be monitored simultaneously, so as to realize on transmission line of electricity to icing, wave and thunder
The monitoring of security risks such as hit.
3), the construction of cable is simple, and preparation is easy:
Under conditions of existing cable manufacturing process, under the premise of guaranteeing cable strength, it is only necessary to by therein one
Root steel core replaces with weak optical fiber Bragg grating strain optical cable, and weak optical fiber Bragg grating temperature strain cable configuration is simple, it is only necessary to will be weak
Optical fiber optical grating array segmentation is fixed in stainless steel metal pipe, is produced using existing composite stainless steel pipe fiber unit
Line carries out the simple automatic online production for improving and can realizing the optical cable.
Detailed description of the invention
Fig. 1 is a kind of wisdom cross-section of cable figure of the invention；
In Fig. 1: 1 is weak optical fiber Bragg grating temperature strain optical cable；2 steel core wires；3 be aluminum core line.
Fig. 2 is weak optical fiber Bragg grating temperature strain optical cable schematic diagram；
In Fig. 2: 11 be metal tube；12 be superweak optical fiber optical grating array；13 be fixed point；14 be buried regions；15 be superweak
Grating temperature sensor；16 be superweak grating strain transducer；17 be heat-conducting buffer substance.
Specific embodiment
A kind of wisdom cable of the invention, sectional view is as shown in Figure 1, include that centrally located weak optical fiber Bragg grating temperature is answered
Darkening cable 1, the steel core wire 2 that twisting is enclosed in outside optical fiber grating temperature strain optical cable and the aluminum stranded conductor 3 being wrapped in outside steel core wire.
The weak optical fiber Bragg grating temperature strain optical cable 1, by outer layer metal tube 11 and be fixed on super in metal tube 11
Weak optical fiber Bragg grating array 12 forms；The inner wall of metal tube 11 is equipped with fixed point 13 and buried regions 14, superweak optical fiber optical grating array 12
It is fixed in fixed point 13 and buried regions 14 with metal tube 11；There are superweak grating strain transducer 16, fixed point 13 in buried regions 14
Between have superweak grating temperature sensor 15；Fiber lengths between adjacent fixed point 13 or fixed point 13 and buried regions 14 are greater than
Or equal to the 101% of 11 length of metal tube.
2 diameter of steel core wire is identical as weak optical fiber Bragg grating strain 1 diameter of optical cable, answers around the weak optical fiber Bragg grating
Darkening cable 1 is twisted encirclement in a helical pattern and is formed.
The aluminum stranded conductor 3 is twisted encirclement around the steel core wire in a helical pattern and is formed.
The reflectivity of the superweak grating temperature sensor 15, superweak grating strain transducer 16 is lower than 0.1%, wavelength
It may be the same or different.
The metal tube 11 is stainless steel tube, and using machine cans, laser welding is formed.
Several complete same or wavelength-division multiplex optical fiber optical grating arrays are carved on the superweak optical fiber optical grating array 12, array
Coat is modified polyacrylate, and thermal expansion coefficient is 5.5 × 10-7/ DEG C, with a thickness of 20~30um；
The length of the buried regions 14 is 30mm, and thickness is less than 2mm, the about 100 μ ε of pretension of strain sensing point.
The fixed point 13 and buried regions 14 is uv-curable glue, adjacent fixed point 13 or fixed point 14 and buried regions it
Between spacing be 250mm.
Preferably, it is also filled with heat-conducting buffer substance 17 in the stainless steel metal pipe 11, in order to improve temperature measuring optical
The response time of grid.
The grating sensor for being used for thermometric and survey stress in superweak optical fiber optical grating array 12 is separately fixed, stress grating is surveyed
After applying pretension, combined closely by uv-curable glue and stainless steel metal pipe, and thermometric grating is in stainless steel metal pipe
Reserved redundancy, freely places, eliminates the influence of stress.On entire cable run, surveys stress grating and be used for monitoring power cable
Strain and vibration on upper different location, thermometric grating can exempt from stress thermometric, while can also carry out to the grating for surveying stress
Temperature-compensating, while realizing temperature, the precise measurement of stress, to realize the icing to transmission line of electricity, wave, be struck by lightning etc. safely
The quick response of hidden danger is realized and is monitored to the distribution on line formula of overhead transmission line.
The wisdom cable is a kind of to utilize superweak FBG monitoring overhead transmission line road temperature, strain and vibration etc.
The wisdom cable of multi-parameter.The present invention is by the way that weak optical fiber Bragg grating battle array to be encapsulated in metal tube using special fixed form
Weak optical fiber Bragg grating temperature strain optical cable is obtained, while weak optical fiber Bragg grating temperature strain optical cable is substituted into one in steel-cored aluminium strand
Steel core, to obtain with the wisdom cable from sense temperature and the variation of stress.The wisdom construction of cable is simple, and available
In the measurement of multi-parameter, can be good in transmission line of electricity icing, the security risks such as wave and be struck by lightning and be monitored, defeated
Electric line, which monitors field, has important application value.
Claims (10)
1. wisdom cable, characterized by comprising: centrally located weak optical fiber Bragg grating temperature strain optical cable (1), twisting is enclosed in
The steel core wire (2) of the weak optical fiber Bragg grating temperature strain optical cable (1) outside is wrapped in the aluminum stranded conductor (3) of steel core wire (2) outside.
2. wisdom cable according to claim 1, it is characterised in that: the weak optical fiber Bragg grating temperature strain optical cable (1), including
The metal tube (11) of outer layer, the superweak optical fiber optical grating array (12) being fixed in metal tube (11)；The inner wall of metal tube (11) is set
There are fixed point (13) and buried regions (14), superweak optical fiber optical grating array (12) in the fixed point (13) and is covered with metal tube (11)
Buried district (14) is fixed；Have superweak grating strain transducer (16) in buried regions (14), has superweak light between adjacent fixed point (13)
Grid temperature sensor (15).
3. wisdom cable according to claim 1, it is characterised in that: two neighboring fixed point (13) or adjacent fixed point
(13) fiber lengths between buried regions (14) are greater than or equal to the 101% of metal tube (11) length.
4. wisdom cable according to claim 1, it is characterised in that: steel core wire (2) diameter and weak optical fiber Bragg grating temperature
It is identical to strain optical cable (1) diameter, is twisted in a helical pattern around the weak optical fiber Bragg grating temperature strain optical cable (1) and surrounds shape
At；Around the steel core wire (2), formation is surrounded in twisting to the aluminum stranded conductor (3) in a helical pattern.
5. wisdom cable according to claim 1, it is characterised in that: the metal tube (11) is stainless steel tube, using machine
Cans, laser welding form.
6. wisdom cable according to claim 1, it is characterised in that: the length of the buried regions (14) is 30mm, and thickness is small
In 2mm, the about 100 μ ε of pretension of strain sensing point.
7. wisdom cable according to claim 1, it is characterised in that: the fixed point (13), buried regions (14) are ultraviolet solid
Change glue, the spacing between two neighboring fixed point (13) or adjacent fixed point (13) and buried regions (14) is 250mm.
8. wisdom cable according to claim 1, it is characterised in that: be also filled with heat-conducting buffer object in the metal tube (11)
Matter (17).
9. wisdom cable according to claim 1, it is characterised in that: be carved on the superweak optical fiber optical grating array (12) several
It is complete with or wavelength-division multiplex optical fiber optical grating array, the coat of array is modified polyacrylate, thermal expansion coefficient is 5.5 ×
10-7/ DEG C, with a thickness of 20~30um.
10. any one wisdom cable as described in claim 1-9, it is characterised in that: for icing, the dance in transmission line of electricity
Dynamic or lightning stroke security risk is monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811185767.0A CN109300605A (en) | 2018-10-11 | 2018-10-11 | Wisdom cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811185767.0A CN109300605A (en) | 2018-10-11 | 2018-10-11 | Wisdom cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109300605A true CN109300605A (en) | 2019-02-01 |
Family
ID=65162219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811185767.0A Pending CN109300605A (en) | 2018-10-11 | 2018-10-11 | Wisdom cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109300605A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331974A (en) * | 2019-06-20 | 2019-10-15 | 武汉理工大学 | A kind of novel oilfield well logging optical cable based on weak optical fiber Bragg grating array |
| CN110596837A (en) * | 2019-10-09 | 2019-12-20 | 宜昌睿传光电技术有限公司 | Temperature-sensing optical fiber cable free of stress packaging and preparation method thereof |
| CN110993175A (en) * | 2019-09-09 | 2020-04-10 | 重庆泰山电缆有限公司 | Self-temperature-measuring electric wire |
| CN113380446A (en) * | 2021-04-21 | 2021-09-10 | 安徽龙联智能光电有限公司 | Self-melting ice type overhead insulated conductor and monitoring device |
| CN114088241A (en) * | 2021-10-21 | 2022-02-25 | 武汉理工大学 | Weak fiber grating array temperature/vibration composite sensing optical cable and use method thereof |
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| CN200952964Y (en) * | 2006-06-23 | 2007-09-26 | 周智 | Non-external influence optical fiber grating temperature sensor |
| US20120082422A1 (en) * | 2009-05-27 | 2012-04-05 | Davide Sarchi | Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable |
| CN203310540U (en) * | 2013-01-15 | 2013-11-27 | 中国电力科学研究院 | Temperature and strain on-line monitoring device integrating optical phase conductors |
| CN105301729A (en) * | 2015-12-12 | 2016-02-03 | 武汉理工大学 | High strength and temperature sensitive optical cable |
| CN105928468A (en) * | 2016-06-24 | 2016-09-07 | 深圳市畅格光电有限公司 | Fiber grating strain sensor and manufacturing method thereof |
| CN107144373A (en) * | 2017-06-16 | 2017-09-08 | 武汉理工大学 | One kind exempts from stress grating array temperature sensing optical cable and its method for sensing |
| CN209087448U (en) * | 2018-10-11 | 2019-07-09 | 三峡大学 | Wisdom cable |
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2018
- 2018-10-11 CN CN201811185767.0A patent/CN109300605A/en active Pending
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| CN200952964Y (en) * | 2006-06-23 | 2007-09-26 | 周智 | Non-external influence optical fiber grating temperature sensor |
| US20120082422A1 (en) * | 2009-05-27 | 2012-04-05 | Davide Sarchi | Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable |
| CN203310540U (en) * | 2013-01-15 | 2013-11-27 | 中国电力科学研究院 | Temperature and strain on-line monitoring device integrating optical phase conductors |
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| CN105928468A (en) * | 2016-06-24 | 2016-09-07 | 深圳市畅格光电有限公司 | Fiber grating strain sensor and manufacturing method thereof |
| CN107144373A (en) * | 2017-06-16 | 2017-09-08 | 武汉理工大学 | One kind exempts from stress grating array temperature sensing optical cable and its method for sensing |
| CN209087448U (en) * | 2018-10-11 | 2019-07-09 | 三峡大学 | Wisdom cable |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331974A (en) * | 2019-06-20 | 2019-10-15 | 武汉理工大学 | A kind of novel oilfield well logging optical cable based on weak optical fiber Bragg grating array |
| CN110993175A (en) * | 2019-09-09 | 2020-04-10 | 重庆泰山电缆有限公司 | Self-temperature-measuring electric wire |
| CN110596837A (en) * | 2019-10-09 | 2019-12-20 | 宜昌睿传光电技术有限公司 | Temperature-sensing optical fiber cable free of stress packaging and preparation method thereof |
| CN110596837B (en) * | 2019-10-09 | 2024-03-19 | 宜昌睿传光电技术有限公司 | Stress-packaging-free temperature-sensing optical fiber cable and preparation method thereof |
| CN113380446A (en) * | 2021-04-21 | 2021-09-10 | 安徽龙联智能光电有限公司 | Self-melting ice type overhead insulated conductor and monitoring device |
| CN114088241A (en) * | 2021-10-21 | 2022-02-25 | 武汉理工大学 | Weak fiber grating array temperature/vibration composite sensing optical cable and use method thereof |
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