CN107478334B - A kind of cable aging infrared detection method - Google Patents

A kind of cable aging infrared detection method Download PDF

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Publication number
CN107478334B
CN107478334B CN201710664998.9A CN201710664998A CN107478334B CN 107478334 B CN107478334 B CN 107478334B CN 201710664998 A CN201710664998 A CN 201710664998A CN 107478334 B CN107478334 B CN 107478334B
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aging
infrared
infrared camera
cable
annular ring
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CN107478334A (en
Inventor
李源
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Jiangsu Tin Yi High Tech Zone Technology Development Co Ltd
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Jiangsu Tin Yi High Tech Zone Technology Development Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry
    • G01J5/0096Radiation pyrometry for measuring wires, electrical contacts or electronic systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry
    • G01J5/50Radiation pyrometry using techniques specified in the subgroups below
    • G01J5/505Radiation pyrometry using techniques specified in the subgroups below using photographic recording
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/8851Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry
    • G01J2005/0077Imaging
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry
    • G01J2005/0081Thermography
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/8851Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8887Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques

Abstract

A kind of cable aging infrared detection method belongs to electric power infrared detecting device and method and technology field;Cable aging infrared detecting device includes the upper annular ring set gradually from top to bottom, middle annular ring and lower annular ring, and infrared camera is uniformly distributed on each annular ring, and all camera shooting head output signals are all connected with signal processor;The cable aging infrared detection method determines aging lateral position first, then determines aging axial position, finally determines spatial position;Cable aging infrared detecting device of the present invention and detection method can quickly find conducting wire aging position in cable in the case where not destroying cable, are conducive to be replaced for cable aging, reduce cable cost.

Description

A kind of cable aging infrared detection method
Technical field
A kind of cable aging infrared detection method belongs to electric power infrared detecting device and method and technology field.
Background technique
Cable is usually to be twisted by two or multiple conducting wires, and mutually insulated between every group of conducting wire, outside is surrounded by insulation Coating.Cable has interior energization, the feature of external insulation.
This structure is conducive to protect cable, prolongs its service life, but still cannot thoroughly avoid conducting wire in cable The problem of aging such as oxidation occur.Once the problem of aging such as oxidation occur for the conducting wire in cable, it will the transfer function of route is influenced, Cable failure will be caused when serious.
For the problem of aging such as conducting wire oxidation in cable, service life is formulated to cable, after reaching service life, just Cable can be subjected to integral replacing.However, being bound to if cable carries out integral replacing in the case where still having superperformance Cost can be improved.The method for solving this problem is exactly to inspect periodically to cable, searches conducting wire in cable and aging occurs Position, then cable is replaced.
However, finding the apparatus and method with conducting wire aging position in detection cable not yet.
Summary of the invention
For under the construction of cable at this stage, the undetectable problem in agings position such as conducting wire oxidation, the invention discloses A kind of cable aging infrared detection method can quickly find conducting wire aging position in cable in the case where not destroying cable, Be conducive to be replaced for cable aging, reduce cable cost.
The object of the present invention is achieved like this:
This method is based on a kind of cable aging infrared detecting device, which includes the upper annular set gradually from top to bottom Circle, middle annular ring and lower annular ring, the middle annular ring are located at the middle position of upper annular ring and lower annular ring, and cable is from upper ring It is passed through in shape circle, middle annular ring and lower annular ring, an infrared camera is evenly arranged with around upper annular ring, upper two is infrared Camera and upper three infrared camera, be evenly arranged with around middle annular ring in an infrared camera, in two infrared cameras Three infrared camera in is evenly arranged with next infrared camera around lower annular ring, lower two infrared cameras and lower three Infrared camera, the upper annular ring, middle annular ring and lower annular ring all have temperature-monitoring function, and middle annular ring has uniform Heating function;A upper infrared camera, in an infrared camera and next infrared camera be located at same and cable place side To on parallel straight line, upper two infrared camera, in two infrared cameras and lower two infrared camera be located at same and cable On the parallel straight line of direction, upper three infrared camera, in three infrared cameras and lower three infrared camera be located at same On the straight line parallel with cable direction;A upper infrared camera, upper two infrared camera, upper three infrared camera, in one Infrared camera, in two infrared cameras, in three infrared cameras, next infrared camera, lower two infrared cameras and lower three The output signal connection signal processor of infrared camera.
A kind of cable aging infrared detection method realized on above-mentioned cable aging infrared detecting device, including following step It is rapid:
Step a, in, annular ring is to electric cable heating;
Step b, aging lateral position is determined;
Step c, aging axial position is determined;
Step d, according to aging lateral position and axial position, spatial position is determined.
Above-mentioned cable aging infrared detection method, the step b the following steps are included:
Step b1, serial gradation data is obtained
A upper infrared camera obtains gradation data k11, and upper two infrared camera obtains gradation data k12, and upper three is infrared Camera obtains gradation data k13, in an infrared camera obtain gradation data k21, in two infrared cameras obtain grey According to k22, in three infrared cameras obtain gradation data k23, next infrared camera obtains gradation data k31, and lower two infrared take the photograph As head obtains gradation data k32, lower three infrared cameras obtain gradation data k33;
Step b2, aging lateral position is obtained from horizontal plane where upper annular ring
Judge min (| k11-k12 |, | k11-k13 |, | k12-k13 |) minimum value, if:
The first situation: | k11-k12 | minimum, aging position is located at the region or upper one that upper three infrared camera is covered The boundary of infrared camera and upper two infrared camera;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11- K13 |, | k12-k13 |) minimum value, if:
| k11-k12 | minimum, aging position is located at the region that upper three infrared camera is covered,
Other, aging position is located at the boundary of a upper infrared camera and upper two infrared camera;
Second situation: | k11-k13 | minimum, aging position is located at the region or upper one that upper two infrared camera is covered The boundary of infrared camera and upper three infrared camera;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11- K13 |, | k12-k13 |) minimum value, if:
| k11-k13 | minimum, aging position is located at the region that upper two infrared camera is covered,
Other, aging position is located at the boundary of a upper infrared camera and upper three infrared camera;
The third situation: | k12-k13 | minimum, aging position is located at the region or upper two that a upper infrared camera is covered The boundary of infrared camera and upper three infrared camera;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11- K13 |, | k12-k13 |) minimum value, if:
| k12-k13 | minimum, aging position is located at the region that a upper infrared camera is covered,
Other, aging position is located at the boundary of upper two infrared camera and upper three infrared camera;
Step b3, therefrom horizontal plane where annular ring obtains aging lateral position
Judge min (| k21-k22 |, | k21-k23 |, | k22-k23 |) minimum value, if:
The first situation: | k21-k22 | it is minimum, aging position be located in the region that is covered of three infrared cameras or in one The boundary of infrared camera two infrared cameras in;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21- K23 |, | k22-k23 |) minimum value, if:
| k21-k22 | it is minimum, aging position be located in the region that is covered of three infrared cameras,
Other, aging position be located in an infrared camera and in two infrared cameras boundary;
Second situation: | k21-k23 | it is minimum, aging position be located in the region that is covered of two infrared cameras or in one The boundary of infrared camera three infrared cameras in;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21- K23 |, | k22-k23 |) minimum value, if:
| k21-k23 | it is minimum, aging position be located in the region that is covered of two infrared cameras,
Other, aging position be located in an infrared camera and in three infrared cameras boundary;
The third situation: | k22-k23 | it is minimum, aging position be located in the region that is covered of an infrared camera or in two The boundary of infrared camera three infrared cameras in;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21- K23 |, | k22-k23 |) minimum value, if:
| k22-k23 | it is minimum, aging position be located in the region that is covered of an infrared camera,
Other, aging position be located in two infrared cameras and in three infrared cameras boundary;
Step b4, aging lateral position is obtained from horizontal plane where lower annular ring
Judge min (| k31-k32 |, | k31-k33 |, | k32-k33 |) minimum value, if:
The first situation: | k31-k32 | minimum, aging position is located at the region or next that lower three infrared camera is covered The boundary of infrared camera and lower two infrared camera;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31- K33 |, | k32-k33 |) minimum value, if:
| k31-k32 | minimum, aging position is located at the region that lower three infrared camera is covered,
Other, aging position is located at the boundary of next infrared camera and lower two infrared camera;
Second situation: | k31-k33 | minimum, aging position is located at the region or next that lower two infrared camera is covered The boundary of infrared camera and lower three infrared camera;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31- K33 |, | k32-k33 |) minimum value, if:
| k31-k33 | minimum, aging position is located at the region that lower two infrared camera is covered,
Other, aging position is located at the boundary of next infrared camera and lower three infrared camera;
The third situation: | k32-k33 | minimum, aging position is located at the region that next infrared camera is covered or lower two The boundary of infrared camera and lower three infrared camera;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31- K33 |, | k32-k33 |) minimum value, if:
| k32-k33 | minimum, aging position is located at the region that next infrared camera is covered,
Other, aging position is located at the boundary of lower two infrared camera and lower three infrared camera;
Step b5, aging lateral position is determined
According to the principle that the minority is subordinate to the majority, aging lateral position, middle annular ring are obtained from horizontal plane where upper annular ring Place horizontal plane obtains aging lateral position, and horizontal plane where lower annular ring obtains aging lateral position, final to determine that aging is horizontal To position.
Above-mentioned cable aging infrared detection method, the step c the following steps are included:
Step c1, in, annular ring is to electric cable heating
Step c2, it in defined time t, calculates:
Step c3, the curve that t1 (t) and t3 (t) are changed over time is drawn, if:
T1 (t) moves down cable aging infrared detecting device above t3 (t), repeats step b1;
T1 (t) moves up cable aging infrared detecting device below t3 (t), repeats step b1;
T1 (t) and t3 (t) is overlapped, and aging axial position is located at plane where middle annular ring.
The utility model has the advantages that
Present invention finds conducting wires in cable after weathering, and heating conduction will change, and makes full use of the variation, will The infrared detection technology of infrared thermal imaging is introduced into cable detection field, has invented a kind of cable aging infrared detection method, Under apparatus of the present invention and method, conducting wire aging position in cable can be quickly found, favorably in the case where not destroying cable It is replaced in for cable aging, reduces cable cost.
Detection device and detection method according to the present invention are also suitble to electric cable stoppage detection, answer when breaking down Fault location is carried out with the present apparatus and method;In addition the present apparatus and method can also be applied especially is going out in cable quality inspection Factory checks and sampling observation of examining goods.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cable aging infrared detecting device of the present invention.
In figure: annular ring on 1, an infrared camera on 11, two infrared cameras on 12, three infrared cameras on 13, in 2 It is annular ring, an infrared camera in 21, two infrared cameras in 22, three infrared cameras in 23,3 lower annular rings, 31 lower one red Outer camera, 32 lower two infrared cameras, 33 lower three infrared cameras.
Specific embodiment
The specific embodiment of the invention is described in further detail with reference to the accompanying drawing.
Specific embodiment one
The present embodiment is cable aging infrared detecting device embodiment.
The cable aging infrared detecting device of the present embodiment, structural schematic diagram are as shown in Figure 1.The cable aging infrared detection Device includes the upper annular ring 1 set gradually from top to bottom, middle annular ring 2 and lower annular ring 3, and the middle annular ring 2 is located at upper The middle position of annular ring 1 and lower annular ring 3, cable are passed through from upper annular ring 1, middle annular ring 2 and lower annular ring 3, upper ring An infrared camera 11, upper two infrared camera 12 and upper three infrared camera 13, middle ring are evenly arranged with around shape circle 1 An infrared camera 21 in being evenly arranged with around shape circle 2, in two infrared cameras 22 and in three infrared cameras 23, lower ring Next infrared camera 31 is evenly arranged with around shape circle 3, lower two infrared cameras 32 and lower three infrared camera 33 are described Upper annular ring 1, middle annular ring 2 and lower annular ring 3 all have temperature-monitoring function, and middle annular ring 2 has the function of to be evenly heated;On One infrared camera 11, in an infrared camera 21 and next infrared camera 31 to be located at same parallel with cable direction Straight line on, upper two infrared camera 12, in two infrared cameras 22 and lower two infrared camera 32 be located at same and cable On the parallel straight line of direction, upper three infrared camera 13, in three infrared cameras 23 and lower three infrared camera 33 be located at On the same straight line parallel with cable direction;A upper infrared camera 11, upper two infrared camera 12, upper three infrared take the photograph As head 13, in an infrared camera 21, in two infrared cameras 22, in three infrared cameras 23, next infrared camera 31, under The output signal connection signal processor of two infrared cameras 32 and lower three infrared camera 33.
Specific embodiment two
The present embodiment is cable aging infrared detection method embodiment.
The cable aging infrared detection method of the present embodiment, the cable aging infrared detecting device described in specific embodiment one Upper realization.The cable aging infrared detection method, comprising the following steps:
Step a, in, annular ring 2 gives electric cable heating;
Step b, aging lateral position is determined;
Step c, aging axial position is determined;
Step d, according to aging lateral position and axial position, spatial position is determined.
Specific embodiment three
The present embodiment is cable aging infrared detection method embodiment.
The cable aging infrared detection method of the present embodiment further limits described on the basis of specific embodiment two Step b the following steps are included:
Step b1, serial gradation data is obtained
A upper infrared camera 11 obtains gradation data k11, and upper two infrared camera 12 obtains gradation data k12, and upper three Infrared camera 13 obtains gradation data k13, in an infrared camera 21 obtain gradation data k21, in two infrared cameras 22 Obtain gradation data k22, in three infrared cameras 23 obtain gradation data k23, next infrared camera 31 obtains gradation data K31, lower two infrared cameras 32 obtain gradation data k32, and lower three infrared cameras 33 obtain gradation data k33;
Step b2, aging lateral position is obtained from upper 1 place horizontal plane of annular ring
Judge min (| k11-k12 |, | k11-k13 |, | k12-k13 |) minimum value, if:
The first situation: | k11-k12 | it is minimum, aging position be located at the region that upper three infrared camera 13 is covered or on The boundary of one infrared camera 11 and upper two infrared camera 12;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11- K13 |, | k12-k13 |) minimum value, if:
| k11-k12 | minimum, aging position is located at the region that upper three infrared camera 13 is covered,
Other, aging position is located at the boundary of a upper infrared camera 11 and upper two infrared camera 12;
Second situation: | k11-k13 | it is minimum, aging position be located at the region that upper two infrared camera 12 is covered or on The boundary of one infrared camera 11 and upper three infrared camera 13;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11- K13 |, | k12-k13 |) minimum value, if:
| k11-k13 | minimum, aging position is located at the region that upper two infrared camera 12 is covered,
Other, aging position is located at the boundary of a upper infrared camera 11 and upper three infrared camera 13;
The third situation: | k12-k13 | it is minimum, aging position be located at the region that a upper infrared camera 11 is covered or on The boundary of two infrared cameras 12 and upper three infrared camera 13;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11- K13 |, | k12-k13 |) minimum value, if:
| k12-k13 | minimum, aging position is located at the region that a upper infrared camera 11 is covered,
Other, aging position is located at the boundary of upper two infrared camera 12 and upper three infrared camera 13;
Step b3, therefrom 2 place horizontal plane of annular ring obtains aging lateral position
Judge min (| k21-k22 |, | k21-k23 |, | k22-k23 |) minimum value, if:
The first situation: | k21-k22 | it is minimum, aging position be located in the region that is covered of three infrared cameras 23 or in The boundary of one two infrared cameras 22 in of infrared camera 21;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21- K23 |, | k22-k23 |) minimum value, if:
| k21-k22 | it is minimum, aging position be located in the region that is covered of three infrared cameras 23,
Other, aging position be located in an infrared camera 21 and in two infrared cameras 22 boundary;
Second situation: | k21-k23 | it is minimum, aging position be located in the region that is covered of two infrared cameras 22 or in The boundary of one three infrared cameras 23 in of infrared camera 21;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21- K23 |, | k22-k23 |) minimum value, if:
| k21-k23 | it is minimum, aging position be located in the region that is covered of two infrared cameras 22,
Other, aging position be located in an infrared camera 21 and in three infrared cameras 23 boundary;
The third situation: | k22-k23 | it is minimum, aging position be located in the region that is covered of an infrared camera 21 or in The boundary of two three infrared cameras 23 in of infrared cameras 22;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21- K23 |, | k22-k23 |) minimum value, if:
| k22-k23 | it is minimum, aging position be located in the region that is covered of an infrared camera 21,
Other, aging position be located in two infrared cameras 22 and in three infrared cameras 23 boundary;
Step b4, aging lateral position is obtained from lower 3 place horizontal plane of annular ring
Judge min (| k31-k32 |, | k31-k33 |, | k32-k33 |) minimum value, if:
The first situation: | k31-k32 | it is minimum, aging position be located at the region that lower three infrared camera 33 is covered or under The boundary of one infrared camera 31 and lower two infrared camera 32;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31- K33 |, | k32-k33 |) minimum value, if:
| k31-k32 | minimum, aging position is located at the region that lower three infrared camera 33 is covered,
Other, aging position is located at the boundary of next infrared camera 31 and lower two infrared camera 32;
Second situation: | k31-k33 | it is minimum, aging position be located at the region that lower two infrared camera 32 is covered or under The boundary of one infrared camera 31 and lower three infrared camera 33;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31- K33 |, | k32-k33 |) minimum value, if:
| k31-k33 | minimum, aging position is located at the region that lower two infrared camera 32 is covered,
Other, aging position is located at the boundary of next infrared camera 31 and lower three infrared camera 33;
The third situation: | k32-k33 | it is minimum, aging position be located at the region that next infrared camera 31 is covered or under The boundary of two infrared cameras 32 and lower three infrared camera 33;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31- K33 |, | k32-k33 |) minimum value, if:
| k32-k33 | minimum, aging position is located at the region that next infrared camera 31 is covered,
Other, aging position is located at the boundary of lower two infrared camera 32 and lower three infrared camera 33;
Step b5, aging lateral position is determined
According to the principle that the minority is subordinate to the majority, aging lateral position, middle annular ring are obtained from upper 1 place horizontal plane of annular ring 2 place horizontal planes obtain aging lateral position, and lower 3 place horizontal plane of annular ring obtains aging lateral position, finally determine aging Lateral position.
Specific embodiment four
The present embodiment is cable aging infrared detection method embodiment.
The cable aging infrared detection method of the present embodiment further limits described on the basis of specific embodiment two Step c the following steps are included:
Step c1, in, annular ring 2 gives electric cable heating
Step c2, it in defined time t, calculates:
Step c3, the curve that t1 (t) and t3 (t) are changed over time is drawn, if:
T1 (t) moves down cable aging infrared detecting device above t3 (t), repeats step b1;
T1 (t) moves up cable aging infrared detecting device below t3 (t), repeats step b1;
T1 (t) and t3 (t) is overlapped, and aging axial position is located at middle 2 place plane of annular ring.

Claims (1)

1. a kind of cable aging infrared detection method, which is characterized in that this method is filled based on a kind of cable aging infrared detection It sets, which includes the upper annular ring (1) set gradually from top to bottom, middle annular ring (2) and lower annular ring (3), the middle ring Shape circle (2) is located at the middle position of upper annular ring (1) and lower annular ring (3), cable from upper annular ring (1), middle annular ring (2) and It passes through, is evenly arranged with an infrared camera (11) around upper annular ring (1), upper two infrared photography in lower annular ring (3) Head (12) He Shangsan infrared camera (13), be evenly arranged with around middle annular ring (2) in an infrared camera (21), in two Infrared camera (22) He Zhongsan infrared camera (23) is evenly arranged with next infrared camera around lower annular ring (3) (31), lower two infrared cameras (32) He Xiasan infrared camera (33), the upper annular ring (1), middle annular ring (2) He Xiahuan Shape circle (3) all has temperature-monitoring function, and middle annular ring (2) has the function of to be evenly heated;A upper infrared camera (11), in one Infrared camera (21) and next infrared camera (31) are located on the same straight line parallel with cable direction, and upper two is red Outer camera (12), in two infrared cameras (22) and lower two infrared camera (32) be located at same and cable direction is flat On capable straight line, upper three infrared camera (13), in three infrared cameras (23) He Xiasan infrared camera (33) be located at it is same On the item straight line parallel with cable direction;A upper infrared camera (11), upper two infrared camera (12), upper three infrared take the photograph As head (13), in an infrared camera (21), in two infrared cameras (22), in three infrared cameras (23), it is next infrared to take the photograph Picture head (31), the output signal connection signal processor of lower two infrared cameras (32) He Xiasan infrared camera (33);
The cable aging infrared detection method realized on cable aging infrared detecting device, comprising the following steps:
Step a, in, annular ring (2) gives electric cable heating;
Step b, aging lateral position is determined;
Step c, aging axial position is determined;
Step d, according to aging lateral position and axial position, spatial position is determined;
The step b the following steps are included:
Step b1, serial gradation data is obtained
A upper infrared camera (11) obtains gradation data k11, and upper two infrared camera (12) obtains gradation data k12, and upper three Infrared camera (13) obtains gradation data k13, in an infrared camera (21) obtain gradation data k21, in two infrared photographies Head (22) obtains gradation data k22, in three infrared cameras (23) obtain gradation data k23, next infrared camera (31) To gradation data k31, lower two infrared cameras (32) obtain gradation data k32, and lower three infrared cameras (33) obtain grey According to k33;
Step b2, aging lateral position is obtained from horizontal plane where upper annular ring (1)
Judge min (| k11-k12 |, | k11-k13 |, | k12-k13 |) minimum value, if:
The first situation: | k11-k12 | minimum, aging position is located at the region or upper one that upper three infrared camera (13) is covered The boundary of infrared camera (11) and upper two infrared camera (12);
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11-k13 |, | k12-k13 |) minimum value, if:
| k11-k12 | minimum, aging position is located at the region that upper three infrared camera (13) is covered,
Other, aging position is located at the boundary of upper an infrared camera (11) and upper two infrared camera (12);
Second situation: | k11-k13 | minimum, aging position is located at the region or upper one that upper two infrared camera (12) is covered The boundary of infrared camera (11) He Shangsan infrared camera (13);
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11-k13 |, | k12-k13 |) minimum value, if:
| k11-k13 | minimum, aging position is located at the region that upper two infrared camera (12) is covered,
Other, aging position is located at the boundary of a upper infrared camera (11) He Shangsan infrared camera (13);
The third situation: | k12-k13 | minimum, aging position is located at the region or upper two that a upper infrared camera (11) is covered The boundary of infrared camera (12) He Shangsan infrared camera (13);
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k11-k12 |, | k11-k13 |, | k12-k13 |) minimum value, if:
| k12-k13 | minimum, aging position is located at the region that a upper infrared camera (11) is covered,
Other, aging position is located at the boundary of upper two infrared camera (12) He Shangsan infrared camera (13);
Step b3, therefrom horizontal plane where annular ring (2) obtains aging lateral position
Judge min (| k21-k22 |, | k21-k23 |, | k22-k23 |) minimum value, if:
The first situation: | k21-k22 | it is minimum, aging position be located in the region that is covered of three infrared cameras (23) or in one Infrared camera (21) and in two infrared cameras (22) boundary;
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21-k23 |, K22-k23 |) minimum value, if:
| k21-k22 | it is minimum, aging position be located in the region that is covered of three infrared cameras (23),
Other, aging position be located in an infrared camera (21) and in two infrared cameras (22) boundary;
Second situation: | k21-k23 | it is minimum, aging position be located in the region that is covered of two infrared cameras (22) or in one The boundary of infrared camera (21) He Zhongsan infrared camera (23);
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21-k23 |, | k22-k23 |) minimum value, if:
| k21-k23 | it is minimum, aging position be located in the region that is covered of two infrared cameras (22),
Other, aging position be located in an infrared camera (21) He Zhongsan infrared camera (23) boundary;
The third situation: | k22-k23 | it is minimum, aging position be located in the region that is covered of an infrared camera (21) or in two The boundary of infrared camera (22) He Zhongsan infrared camera (23);
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k21-k22 |, | k21-k23 |, | k22-k23 |) minimum value, if:
| k22-k23 | it is minimum, aging position be located in the region that is covered of an infrared camera (21),
Other, aging position be located in two infrared cameras (22) He Zhongsan infrared camera (23) boundary;
Step b4, aging lateral position is obtained from horizontal plane where lower annular ring (3)
Judge min (| k31-k32 |, | k31-k33 |, | k32-k33 |) minimum value, if:
The first situation: | k31-k32 | minimum, aging position is located at the region or next that lower three infrared camera (33) is covered The boundary of infrared camera (31) and lower two infrared camera (32);
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31-k33 |, | k32-k33 |) minimum value, if:
| k31-k32 | minimum, aging position is located at the region that lower three infrared camera (33) is covered,
Other, aging position is located at the boundary of next infrared camera (31) and lower two infrared camera (32);
Second situation: | k31-k33 | minimum, aging position is located at the region or next that lower two infrared camera (32) is covered The boundary of infrared camera (31) He Xiasan infrared camera (33);
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31-k33 |, | k32-k33 |) minimum value, if:
| k31-k33 | minimum, aging position is located at the region that lower two infrared camera (32) is covered,
Other, aging position is located at the boundary of next infrared camera (31) He Xiasan infrared camera (33);
The third situation: | k32-k33 | minimum, aging position is located at the region that next infrared camera (31) is covered or lower two The boundary of infrared camera (32) He Xiasan infrared camera (33);
By cable aging infrared detecting device in the horizontal plane rotate be no more than 5 °, judge min (| k31-k32 |, | k31-k33 |, | k32-k33 |) minimum value, if:
| k32-k33 | minimum, aging position is located at the region that next infrared camera (31) is covered,
Other, aging position is located at the boundary of lower two infrared camera (32) He Xiasan infrared camera (33);
Step b5, aging lateral position is determined
According to the principle that the minority is subordinate to the majority, horizontal plane where from upper annular ring (1) obtains aging lateral position, middle annular ring (2) horizontal plane where obtains aging lateral position, and horizontal plane where lower annular ring (3) obtains aging lateral position, final to determine Aging lateral position;
The step c the following steps are included:
Step c1, in, annular ring (2) gives electric cable heating;
Step c2, it in defined time t, calculates:
Step c3, the curve that t1 (t) and t3 (t) are changed over time is drawn, if:
T1 (t) moves down cable aging infrared detecting device above t3 (t), repeats step b1;
T1 (t) moves up cable aging infrared detecting device below t3 (t), repeats step b1;
T1 (t) and t3 (t) is overlapped, and aging axial position is located at plane where middle annular ring (2).
CN201710664998.9A 2016-10-20 2017-08-07 A kind of cable aging infrared detection method Active CN107478334B (en)

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CN108846418B (en) * 2018-05-24 2019-12-13 广东电网有限责任公司 Cable equipment temperature abnormity positioning and identifying method

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JPH1030990A (en) * 1996-07-16 1998-02-03 Ishikawajima Harima Heavy Ind Co Ltd Raising-lowering and swiveling mechanism for liquid penetrant testing apparatus
CN103163150A (en) * 2013-03-18 2013-06-19 长飞光纤光缆有限公司 Online cable surface defect detection device and online cable surface defect detection method
CN203491576U (en) * 2013-10-11 2014-03-19 浙江昌泰电力开关有限公司 Temperature and humidity control device of mobile box transformer substation
CN105223203A (en) * 2015-10-23 2016-01-06 王海平 A kind of infrared facility of valve body carrying out flaw detection

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Publication number Priority date Publication date Assignee Title
JP2688198B2 (en) * 1987-05-30 1997-12-08 大阪瓦斯株式会社 In-service wire
JPH1030990A (en) * 1996-07-16 1998-02-03 Ishikawajima Harima Heavy Ind Co Ltd Raising-lowering and swiveling mechanism for liquid penetrant testing apparatus
CN103163150A (en) * 2013-03-18 2013-06-19 长飞光纤光缆有限公司 Online cable surface defect detection device and online cable surface defect detection method
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