CN106643486A - Cable aging position detection device based on temperature transfer law - Google Patents
Cable aging position detection device based on temperature transfer law Download PDFInfo
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- CN106643486A CN106643486A CN201610945043.6A CN201610945043A CN106643486A CN 106643486 A CN106643486 A CN 106643486A CN 201610945043 A CN201610945043 A CN 201610945043A CN 106643486 A CN106643486 A CN 106643486A
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- annular ring
- infrared camera
- infrared
- cable
- aging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
Abstract
The invention discloses a cable aging position detection device based on a temperature transfer law, which belongs to the technical field of power and infrared detection. Distinguishing technical features of the cable aging position detection device based on the temperature transfer law lie in that an upper annular ring and a lower annular ring need to have a rotation function, a middle annular ring does not need to have a rotation function, six infrared cameras are arranged on the middle annular ring, and a temperature sensor is arranged on the upper annular ring and the lower annular ring respectively. Compared with a power line aging infrared detection device and a detection method provided by one invention, the cable aging position detection device based on the temperature transfer law of the invention has a special structure, the rotation function of the middle annular ring is saved, nine infrared cameras are reduced to six infrared cameras, the cost of the three saved cameras is far higher than the cost of the two temperature sensors, the complexity of the device can be reduced, and the device cost can be reduced.
Description
Technical field
A kind of aging position detecting device of the cable based on temperature transfer law belongs to electric power, infrared detection technology field.
Background technology
Cable is typically formed by two or multiple conducting wires are stranded, mutually insulated between every group of wire, and outside is surrounded by insulation
Coating.Cable has interior energization, the feature of external insulation.
This structure, is conducive to protecting cable, extends its service life, but still can not thoroughly avoid wire in cable
The problem of aging such as generation oxidation.Once there is the problem of aging such as oxidation in the wire in cable, it will affect the transfer function of circuit,
Cable failure will be caused when serious.
For the problem of aging such as wire oxidation in cable, service life is formulated to cable, after service life is reached, just
Cable can be carried out integral replacing.If however, cable carries out integral replacing in the case where still having superperformance, be bound to
Cost can be improved.The method for solving this problem is exactly that cable is made regular check on, and searches wire generation in cable aging
Position, then cable is changed.
Patent of invention《A kind of aging infrared detecting device of power line and detection method》, it was found that the wire in cable is old
The characteristic that the heat conductivility of cable can be made to change after change, i.e. cable after weathering, the axially and transversely heat of both direction
Transmission speed is different, using this characteristic, has invented a kind of aging position infrared detection dress of cable detected based on heat conductivility
Put and detection method, for the aging position detection of cable new detection means is provided.However, the invention has the disadvantages that：
Firstth, disclosed device is provided with nine infrared cameras, increased installation cost；
Secondth, disclosed method and step is complicated, has the shortcomings that complex operation；
3rd, because each infrared image sensor can only be covered in 1/3rd circumference ranges therefore resulting is old
Changing lateral attitude also can only be limited in 1/3rd circumference ranges, therefore have the shortcomings that precision is low.
The content of the invention
The purpose of the present invention is aiming at patent of invention《A kind of aging infrared detecting device of power line and detection method》In
Apparatus structure complexity high cost, the problem that method and step multioperation is complicated, aging lateral attitude precision is low, design is a kind of improved
The aging position infrared detecting device of cable.
To achieve these goals, the invention discloses a kind of aging position detection dress of cable based on temperature transfer law
Put, patent of invention can not only be simplified《A kind of aging infrared detecting device of power line and detection method》The complexity of middle device,
And detecting step can be omitted, while accuracy of detection can also be improved.
The object of the present invention is achieved like this：
The aging position detecting device of a kind of cable based on temperature transfer law, including the upper ring for setting gradually from top to bottom
Shape circle, middle annular ring and lower annular ring, the middle annular ring is located at the centre position of upper annular ring and lower annular ring, and cable is from upper
Pass through in annular ring, middle annular ring and lower annular ring；Upper annular ring can planar do uniform circular motion, upper ring at it
Temperature sensor is provided with shape circle, lower annular ring can planar do uniform circular motion at it, on lower annular ring
It is provided with temperature sensor；The resistance wire for being internally provided with heating function of middle annular ring, outside is evenly arranged with first
Infrared camera, the second infrared camera, the 3rd infrared camera, the 4th infrared camera, the 5th infrared camera and the 6th
Infrared camera；First infrared camera, the second infrared camera, the 3rd infrared camera, the 4th infrared camera, the 5th is red
Outer camera, the 6th infrared camera, the output of upper temperature sensor and lower temperature sensor passes to signal processor.
It is a kind of on the aging position detecting device of the above-mentioned cable based on temperature transfer law realize based on temperature transmit
The aging method for detecting position of cable of rule, comprises the following steps：
Annular ring is to electric cable heating in step a, use；
Step b, allow cable natural cooling, chilling temperature is higher than temperature before heating；
Step c, determine aging lateral attitude；
Step d, determine aging axial location；
Step e, according to aging lateral attitude and axial location, determine locus.
The aging method for detecting position of the above-mentioned cable based on temperature transfer law, step c is comprised the following steps：
Step c1, obtain serial gradation data
First infrared camera obtains gradation data k1, and the second infrared camera obtains gradation data k2, and the 3rd infrared takes the photograph
As head obtains gradation data k3, the 4th infrared camera obtains gradation data k4, and the 5th infrared camera obtains gradation data k5,
6th infrared camera obtains gradation data k6；
Step c2, therefrom annular ring place horizontal plane obtain aging lateral attitude
Judge | k1-k2 |, | k2-k3 |, | k3-k4 |, | k4-k5 |, | k5-k6 | and | k6-k1 | in it is adjacent or be separated by two
Individual maximum, if：
| k1-k2 | and | k2-k3 | are two adjacent maximums, and aging position is located at what the second infrared camera was covered
Region；
| k2-k3 | and | k3-k4 | are two adjacent maximums, and aging position is located at what the 3rd infrared camera was covered
Region；
| k3-k4 | and | k4-k5 | are two adjacent maximums, and aging position is located at what the 4th infrared camera was covered
Region；
| k4-k5 | and | k5-k6 | are two adjacent maximums, and aging position is located at what the 5th infrared camera was covered
Region；
| k5-k6 | and | k6-k1 | are two adjacent maximums, and aging position is located at what the 6th infrared camera was covered
Region；
| k6-k1 | and | k1-k2 | are two adjacent maximums, and aging position is located at what the first infrared camera was covered
Region；
| k1-k2 | and | k3-k4 | are two maximums being separated by, and aging position is located at the second infrared camera and the 3rd red
The boundary of outer camera；
| k2-k3 | and | k4-k5 | are two maximums being separated by, and aging position is located at the 3rd infrared camera and the 4th red
The boundary of outer camera；
| k3-k4 | and | k5-k6 | are two maximums being separated by, and aging position is located at the 4th infrared camera and the 5th red
The boundary of outer camera；
| k4-k5 | and | k6-k1 | are two maximums being separated by, and aging position is located at the 5th infrared camera and the 6th red
The boundary of outer camera；
| k5-k6 | and | k1-k2 | are two maximums being separated by, and aging position is located at the 6th infrared camera and first red
The boundary of outer camera；
| k6-k1 | and | k2-k3 | are two maximums being separated by, and aging position is located at the first infrared camera and second red
The boundary of outer camera.
The aging method for detecting position of the above-mentioned cable based on temperature transfer law, step d is comprised the following steps：
Annular ring is to electric cable heating in step d1, use
Step d2, in the time t of regulation, upper annular ring and lower annular ring synchronous axial system identical complete cycle number are counted respectively
Calculate：
The temperature data that upper temperature sensor is collected
The temperature data that lower temperature sensor is collected
In formula, tem_1 is the temperature data that upper temperature sensor is collected, and the lower temperature sensors of tem_2 are collected
Temperature data；
Step d3, drafting t1 (t) and the time dependent curves of t3 (t), if：
T1 (t) will be moved down, weight in t3 (t) tops based on the aging position detecting device of cable of temperature transfer law
Multiple step b1；
T1 (t) will be moved up, weight in t3 (t) lower sections based on the aging position detecting device of cable of temperature transfer law
Multiple step b1；
T1 (t) and t3 (t) overlaps, and aging axial location is located at middle annular ring place plane.
Beneficial effect：
First and patent of invention《A kind of aging infrared detecting device of power line and detection method》Compare, the present invention is based on
The distinguishing feature of the aging position detecting device of cable of temperature transfer law is, it is only necessary to upper annular ring and lower annular ring
With spinfunction, and middle annular ring does not have a spinfunction, and is only provided with middle annular ring six and infrared takes the photograph
As head, arrange on upper annular ring and lower annular ring and respectively have a temperature sensor, under this structure, due to saving middle annular
The spinfunction of circle, and six infrared cameras are reduced to by nine infrared cameras, three camera costs of saving are remote
Higher than the cost of two temperature sensors, therefore the complexity of device can not only be reduced, and installation cost can be reduced；
Second and patent of invention《A kind of aging infrared detecting device of power line and detection method》Compare, the present invention is based on
The distinguishing feature of the aging method for detecting position of cable of temperature transfer law is, therefrom six on annular ring camera
Obtain serial gradation data, then two neighboring camera gradation data made the difference, obtain six groups of difference datas, finally by from
Two poor maximums that are adjacent or being separated by are selected in these differences, aging lateral attitude is directly determined；This method, hence it is evident that simplify
The calculating multilevel iudge step of serial gradation data, and due to being uniformly arranged six cameras on middle annular ring, each
Camera only needs the region of covering 1/6th, therefore aging lateral attitude to can determine in 1/6th circumference ranges
Interior, accuracy of detection is doubled.
Description of the drawings
Fig. 1 is structural representation of the present invention based on the aging position detecting device of cable of temperature transfer law.
In figure：Annular ring on 1, temperature sensor on 11, annular ring in 2,21 first infrared cameras, 22 second infrared are taken the photograph
As under head, 23 the 3rd infrared cameras, 24 the 4th infrared cameras, 25 the 5th infrared cameras, 26 the 6th infrared cameras, 3
Annular ring, 31 times temperature sensors.
Specific embodiment
The specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Specific embodiment one
The present embodiment is based on the aging position detecting device embodiment of cable of temperature transfer law.
The aging position detecting device of cable based on temperature transfer law of the present embodiment, structural representation as shown in figure 1,
The upper annular ring 1 that the aging position detecting device of cable of temperature transfer law includes setting gradually from top to bottom, middle ring should be based on
Shape circle 2 and lower annular ring 3, the middle annular ring 2 is located at the centre position of upper annular ring 1 and lower annular ring 3, and cable is from upper annular
Circle 1, passes through in middle annular ring 2 and lower annular ring 3；Upper annular ring 1 can planar do uniform circular motion, upper ring at it
Temperature sensor 11 is provided with shape circle 1, lower annular ring 3 can planar do uniform circular motion, lower annular at it
Temperature sensor 31 is provided with circle 3；The resistance wire for being internally provided with heating function of middle annular ring 2, outside uniformly sets
It is equipped with the first infrared camera 21, the second infrared camera 22, the 3rd infrared camera 23, the 4th infrared camera 24, the 5th
The infrared camera 26 of infrared camera 25 and the 6th；First infrared camera 21, the second infrared camera 22, the 3rd infrared photography
23, the 4th infrared camera 24, the 5th infrared camera 25, the 6th infrared camera 26, upper temperature sensor 11 and lower temperature
The output of degree sensor 31 passes to signal processor.
Specific embodiment two
The present embodiment is based on the aging method for detecting position embodiment of cable of temperature transfer law.
The aging method for detecting position of cable based on temperature transfer law of the present embodiment, described in specific embodiment one
Realize on the aging position detecting device of cable based on temperature transfer law, the method is comprised the following steps：
Annular ring 2 gives electric cable heating in step a, use；
Step b, allow cable natural cooling, chilling temperature is higher than temperature before heating；
Step c, determine aging lateral attitude；
Step d, determine aging axial location；
Step e, according to aging lateral attitude and axial location, determine locus.
Specific embodiment three
The present embodiment is based on the aging method for detecting position embodiment of cable of temperature transfer law.
The aging method for detecting position of cable based on temperature transfer law of the present embodiment, on the basis of specific embodiment two
On, further limit step c and comprise the following steps：
Step c1, obtain serial gradation data
First infrared camera 21 obtains gradation data k1, and the second infrared camera 22 obtains gradation data k2, and the 3rd is red
Outer camera 23 obtains gradation data k3, and the 4th infrared camera 24 obtains gradation data k4, and the 5th infrared camera 25 is obtained
Gradation data k5, the 6th infrared camera 26 obtains gradation data k6；
Step c2, therefrom annular ring place horizontal plane obtain aging lateral attitude
Judge | k1-k2 |, | k2-k3 |, | k3-k4 |, | k4-k5 |, | k5-k6 | and | k6-k1 | in it is adjacent or be separated by two
Individual maximum, if：
| k1-k2 | and | k2-k3 | are two adjacent maximums, and aging position is covered positioned at the second infrared camera 22
Region；
| k2-k3 | and | k3-k4 | are two adjacent maximums, and aging position is covered positioned at the 3rd infrared camera 23
Region；
| k3-k4 | and | k4-k5 | are two adjacent maximums, and aging position is covered positioned at the 4th infrared camera 24
Region；
| k4-k5 | and | k5-k6 | are two adjacent maximums, and aging position is covered positioned at the 5th infrared camera 25
Region；
| k5-k6 | and | k6-k1 | are two adjacent maximums, and aging position is covered positioned at the 6th infrared camera 26
Region；
| k6-k1 | and | k1-k2 | are two adjacent maximums, and aging position is covered positioned at the first infrared camera 21
Region；
| k1-k2 | and | k3-k4 | are two maximums being separated by, and aging position is located at the second infrared camera 22 and the 3rd
The boundary of infrared camera 23；
| k2-k3 | and | k4-k5 | are two maximums being separated by, and aging position is located at the 3rd infrared camera 23 and the 4th
The boundary of infrared camera 24；
| k3-k4 | and | k5-k6 | are two maximums being separated by, and aging position is located at the 4th infrared camera 24 and the 5th
The boundary of infrared camera 25；
| k4-k5 | and | k6-k1 | are two maximums being separated by, and aging position is located at the 5th infrared camera 25 and the 6th
The boundary of infrared camera 26；
| k5-k6 | and | k1-k2 | are two maximums being separated by, and aging position is located at the 6th infrared camera 26 and first
The boundary of infrared camera 21；
| k6-k1 | and | k2-k3 | are two maximums being separated by, and aging position is located at the first infrared camera 21 and second
The boundary of infrared camera 22.
Specific embodiment four
The present embodiment is based on the aging method for detecting position embodiment of cable of temperature transfer law.
The aging method for detecting position of cable based on temperature transfer law of the present embodiment, on the basis of specific embodiment two
On, further limit step d and comprise the following steps：
Annular ring 2 gives electric cable heating in step d1, use
Step d2, in the time t of regulation, upper annular ring 1 and the synchronous axial system identical complete cycle number of lower annular ring 3, respectively
Calculate：
The temperature data that upper temperature sensor 11 is collected
The temperature data that lower temperature sensor 31 is collected
In formula, tem_1 is the temperature data that upper temperature sensor 11 is collected, and tem_2 is gathered for lower temperature sensor 31
The temperature data for arriving；
Step d3, drafting t1 (t) and the time dependent curves of t3 (t), if：
T1 (t) will be moved down, weight in t3 (t) tops based on the aging position detecting device of cable of temperature transfer law
Multiple step b1；
T1 (t) will be moved up, weight in t3 (t) lower sections based on the aging position detecting device of cable of temperature transfer law
Multiple step b1；
T1 (t) and t3 (t) overlaps, and aging axial location is located at the place plane of middle annular ring 2.
Claims (1)
1. the aging position detecting device of a kind of cable based on temperature transfer law, it is characterised in that including from top to bottom successively
The upper annular ring for arranging（1）, middle annular ring（2）With lower annular ring（3）, the middle annular ring（2）Positioned at upper annular ring（1）With under
Annular ring（3）Centre position, cable is from upper annular ring（1）, middle annular ring（2）With lower annular ring（3）In pass through；Upper annular ring
（1）Uniform circular motion, upper annular ring can be planar done at it（1）On be provided with temperature sensor（11）, lower ring
Shape circle（3）Uniform circular motion, lower annular ring can be planar done at it（3）On be provided with temperature sensor（31）；
Middle annular ring（2）The resistance wire for being internally provided with heating function, outside is evenly arranged with the first infrared camera（21）, the
Two infrared cameras（22）, the 3rd infrared camera（23）, the 4th infrared camera（24）, the 5th infrared camera（25）With
Six infrared cameras（26）；First infrared camera（21）, the second infrared camera（22）, the 3rd infrared camera（23）, the
Four infrared cameras（24）, the 5th infrared camera（25）, the 6th infrared camera（26）, upper temperature sensor（11）With lower temperature
Degree sensor（31）Output pass to signal processor.
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| CN201610945043.6A CN106643486B (en) | 2016-10-26 | 2016-10-26 | A kind of cable aging position detecting device based on temperature transfer law |
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|---|---|---|---|
| CN201610945043.6A CN106643486B (en) | 2016-10-26 | 2016-10-26 | A kind of cable aging position detecting device based on temperature transfer law |
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| CN106643486A true CN106643486A (en) | 2017-05-10 |
| CN106643486B CN106643486B (en) | 2019-06-14 |
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| CN1620603A (en) * | 2002-01-23 | 2005-05-25 | 马雷纳系统有限公司 | Employing infrared thermography for defect detection and analysis |
| CN101806762A (en) * | 2010-05-31 | 2010-08-18 | 哈尔滨工业大学 | Method for identifying thermal defects by means of auxiliary heat source under condition of small temperature difference |
| CN102933797A (en) * | 2010-06-03 | 2013-02-13 | 斯奈克玛 | Measuring the damage to a turbine-blade thermal barrier |
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Effective date of registration: 20190516 Address after: 751507 Caoji Circle Natural Village, Huianbao Town, Yanchi County, Wuzhong City, Ningxia Hui Autonomous Region Applicant after: Yanchi Huize Agricultural Machinery Operation Co., Ltd. Address before: 150036 Xiangfang District, Harbin, Heilongjiang, 45 East Street five people's livelihood (1 building of Minsheng District) 2 unit 401 room. Applicant before: Wang Qi |
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Effective date of registration: 20201022 Address after: Group 8, Xuean community neighborhood committee, Dongchen Town, Rugao City, Nantong City, Jiangsu Province, 226000 Patentee after: Nantong jiashijie Electric Co., Ltd Address before: 751507 Caoji Circle Natural Village, Huianbao Town, Yanchi County, Wuzhong City, Ningxia Hui Autonomous Region Patentee before: Yanchi Huize Agricultural Machinery Operation Co.,Ltd. |
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Effective date of registration: 20210803 Address after: 226000 Group 8, Xuean community neighborhood committee, Dongchen Town, Rugao City, Nantong City, Jiangsu Province Patentee after: NANTONG DONGFENG SPECIAL CABLE Co.,Ltd. Address before: 226000 Group 8, Xuean community neighborhood committee, Dongchen Town, Rugao City, Nantong City, Jiangsu Province Patentee before: Nantong jiashijie Electric Co., Ltd |