CN106840005A - A kind of aerial condutor line footpath noncontact assay method and specifications of cables plate - Google Patents
A kind of aerial condutor line footpath noncontact assay method and specifications of cables plate Download PDFInfo
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- CN106840005A CN106840005A CN201710053123.5A CN201710053123A CN106840005A CN 106840005 A CN106840005 A CN 106840005A CN 201710053123 A CN201710053123 A CN 201710053123A CN 106840005 A CN106840005 A CN 106840005A
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- 238000003556 assay Methods 0.000 title claims abstract description 12
- 238000012209 assay specification Methods 0.000 title description 3
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000002372 labelling Methods 0.000 claims description 3
- 230000011514 reflex Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000003384 imaging method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to power circuit maintenance technology field, more particularly to a kind of aerial condutor line footpath noncontact assay method.It includes camera and specifications of cables plate, it is characterised in that measuring process is as follows：(1) specifications of cables plate is placed at camera distance established standardses distance and is taken pictures, form Comparison of standards picture；(2) near cable to be measured, suitable position is selected, the object distance distance between measurement camera and cable under test is simultaneously recorded, and takes pictures to form picture in kind；(3) according to the established standardses distance and the object distance distance, proportionality coefficient is converted, is contrast picture in kind by picture in kind；(4) picture that contrasts in kind is compared with Comparison of standards picture, that is, is defined as corresponding cable under test specification.The invention also discloses a kind of specifications of cables plate, it includes on-gauge plate body, and multiple standard cable sections are furnished with thereon, the beneficial effects of the invention are as follows：Without having a power failure, without contact, assert that overhead cable gauge wire footpath is quick, accurately.
Description
Technical field
The present invention relates to power circuit maintenance technology field, more particularly to a kind of aerial condutor line footpath noncontact assay method
And specifications of cables plate.
Background technology
When the operation maintenance of electric power overhead wire and line loss theoretical calculation, it is often necessary to determine overhead original bus, wire
Line footpath, is estimated or judges whether it meets new capacity requirement accordingly.Although having for each overhead transmission line
Original design data, but due to a variety of causes, often patrol officer can not obtain immediately.Electric power operation maintenance personnel needs one kind side
Just efficiently measuring method knowing the line footpath of aerial cable.Operating aerial condutor measurement (measure) will solve two big difficult points
Problem, one is to avoid high-voltage electric shock dangerous, and two is the non-measurement of ascending a height in ground.Existing noncontact wire ga(u)ging equipment is based on laser
Scanning survey principle, complex structure, though there is high precision, its is expensive, and volume is big, inconvenient to carry, it is impossible to meet
Using for power circuit operation maintenance personnel wilderness wild environment needs.
For actual aerial cable, be by standard application, in view of conventional aerial condutor section have 25,35,50,
70th, 95,120,150,185,240,300,400 square millimeters, corresponding line footpath is also to determine uniquely, therefore, only need true
Fixed wire to be measured be it is any in aerial condutor, just can be with for power circuit operation maintenance personnel, and be not required to accurately measure.But
For aerial cables, this is difficult to what is accurately held by range estimation.
The content of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, there is provided a kind of aerial condutor line footpath noncontact assay method, with fast
Speed knows the line footpath specification that institute's survey line net is used.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of aerial condutor line footpath noncontact assay method,
Including camera and specifications of cables plate, it is characterised in that the specifications of cables plate includes on-gauge plate body, in the on-gauge plate sheet
Parallel is furnished with multiple standard cable sections corresponding with standard cable on body, and measuring process is as follows：
(1) specifications of cables plate is placed at camera distance established standardses distance, the focal length for locking camera is taken pictures,
Comparison of standards picture is formed in camera；
(2) near cable to be measured, selection is suitable to set up the position of the camera, fixed camera；
(3) measure the object distance distance between camera and cable under test and record, in selected camera focal and step (1)
The focal length of the locking camera is consistent, cable under test is entered shooting window, takes pictures to form picture in kind；
(4) according to the established standardses distance and the object distance distance, proportionality coefficient is converted, picture in kind is pressed into the ratio
Example coefficient adjustment, makes it consistent with Comparison of standards picture；Picture after adjustment is saved as into contrast picture in kind；
(5) picture that contrasts in kind is compared with Comparison of standards picture, i.e., it is to be measured in judgement contrast picture in kind
The picture traverse of cable, finds out the closest standard cable segment labeling of width in Comparison of standards picture, that is, be defined as corresponding
Cable under test specification.
Operation principle of the invention is as follows：In photographing principles, focal length refers to that parallel rays is converged to a bit by camera lens, this
Some the distance to camera lens is focal length；Object distance refers to object to the distance of optical center；Image distance is object imaging in camera lens
The distance of the heart, after camera lens is mixed up, image distance is exactly distance of the egative film to optical center；In the camera, image distance is much smaller than object distance,
Slightly larger than focal length, actually like away from being approximately equal to focal length.When focal length is constant, then image distance reduces for object distance increase；In other words in Jiao
Away from it is constant when, object distance is bigger, then be imaged smaller, and vice versa.
Accordingly, if proportionality coefficient described in step (4) is K, established standardses distance is A, and the object distance of actual measurement is X, i.e.,：
K=X/A
Based on above-mentioned principle, after picture in kind is obtained, adjustment yardstick is understood by proportionality coefficient conversion, i.e., to reality
Thing picture obtains contrast picture in kind after amplifying K times, then by the cable under test imaging in material object contrast picture and Comparison of standards
In picture standard cable imaging contrast one by one, find width it is immediate can confirmation cable under test specification.
The beneficial effects of the invention are as follows：There is provided a kind of side of simply and easily long-range non-cpntact measurement aerial cable line footpath
Method, Comparison of standards picture is saved as by the imaging of standard cable section in advance, the contrast photo comparison in kind with cable under test, is determined to be measured
The specification of cable is diameter.Also must be one of which on on-gauge plate due to cable under test diameter, so contrast quick, accurately.It is right
For present cell-phone function, Solve on site problem of being more convenient for also is adapted for installing corresponding APP processing routines on mobile phone.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the camera is mobile phone or single-lens reflex camera.
Beneficial effect using above-mentioned further scheme is that camera is suitable to compare at any time, and list instead can then be imaged apparent.
Further, com-parison and analysis in the step (4), including picture is imported into computer, picture is entered into line definition treatment,
Proportionality coefficient treatment forms the contrast picture in kind, and material object contrast picture is displaced into the corresponding mark of specifications of cables plate imaging
Compare on quasi- cut cable.
Beneficial effect using above-mentioned further scheme is to become apparent from observing picture using computer, is easy to compare, in addition
Computer processing means are also relatively abundanter.
Further, range measurement uses laser range finder described in step (3).
Beneficial effect using above-mentioned further scheme is, laser is found range instrument the most, it is common to use, especially it is portable more
It is convenient.
Further, step (4) and (5) are automatically obtained by the APP application software being set in advance in mobile phone.
Beneficial effect using above-mentioned further scheme is, when forming APP application software, just can be according to the object distance of input certainly
It is dynamic to compare, cable specification number is immediately arrived at, and then correspondence goes out area of section and line footpath.Faster practicality.
It is used for aerial condutor line footpath noncontact setting-out line cable on-gauge plate the invention also discloses one kind.
A kind of specifications of cables plate, including on-gauge plate body, it is characterised in that parallel is furnished with the on-gauge plate body
Multiple standard cable sections corresponding with standard cable.
Its advantage is, using specifications of cables plate generation Comparison of standards picture and the material object of actual aerial cable formation
Contrast picture compares, it is easier to determine the specification of cable to be measured, and without doing absolute measurement to its line footpath, this reduces to surveying
Measure the required precision of facility.
Further, the on-gauge plate body is transparency glass plate, and the on-gauge plate body is provided with parallel lines.
Beneficial effect using above-mentioned further scheme is, using parallel lines is missed to be more convenient observation cable diameter
Difference.
Further, the standard cable section on the on-gauge plate body cuts section by reality aerial cable.
Beneficial effect using above-mentioned further scheme is that the shape at its edge of actual cable section, such as multiply helical form are more
Close to truth, taking pictures in the case of same or like, its edge effect is completely the same, more preferably compares.
Brief description of the drawings
Fig. 1 is in-site measurement view of the invention；
Fig. 2 is picture schematic diagram in kind of the invention；
Fig. 3 is the material object contrast picture schematic diagram after A positions adjustment in Fig. 2；
Fig. 4 is a kind of specifications of cables plate schematic diagram of the invention；
Fig. 5 is another specifications of cables plate schematic diagram of the invention；.
In Fig. 1 to Fig. 5,1, specifications of cables plate；1-1, mark；1-2, standard cable section；1-3, parallel lines；2nd, line bar；
3rd, cable under test；4th, camera；5th, picture in kind；6th, contrast picture in kind.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
As shown in Fig. 1~5, a kind of aerial condutor line footpath noncontact assay method, including camera 4 and specifications of cables plate 1,
The specifications of cables plate 1 includes on-gauge plate body, and parallel is furnished with multiple corresponding with standard cable on the on-gauge plate body
Standard cable section 1-2, measuring process is as follows：
(1) specifications of cables plate 1 is placed at the established standardses distance of camera distance 4, the focal length for locking camera is taken pictures,
Comparison of standards picture is formed in the camera；The Comparison of standards picture is consistent with specifications of cables plate 1, is repeated no more.
(2) near cable to be measured, selection is suitable to set up the position of the camera 4, fixed camera 4；
(3) measure the object distance distance between camera 4 and cable under test and record, select camera focal and step (1)
Described in locking camera focal length it is consistent, cable under test is entered shooting window, take pictures to form picture in kind 5；
(4) according to the established standardses distance and the object distance distance, Proportional coefficient K is converted, by picture in kind by described
Proportionality coefficient is adjusted, and makes it consistent with Comparison of standards picture；Picture after adjustment is saved as into contrast picture 6 in kind；
(5) picture 6 that contrasts in kind is compared with Comparison of standards picture, i.e., it is to be measured in judgement contrast picture in kind
The picture traverse of cable, finds out the closest standard cable segment labeling of width in Comparison of standards picture, that is, be defined as corresponding
Cable under test specification.
Established standardses distance can as needed select several common distances in step (1), such as 1 meter, 5 meters, 10 meters, just
From the normal pictures closest to object distance when in comparison.General high-altitude sets up cable away from ground more than 5 meters, and high pressure away from
Hand over from the ground remote.So be conducive to reducing error from different normal pictures.
The camera 4 is mobile phone or single-lens reflex camera.
Com-parison and analysis in the step (4), including picture in kind 5 is imported into computer, picture in kind 5 is entered at line definition
Reason, proportionality coefficient treatment forms the contrast picture 6 in kind, and material object contrast picture 6 is displaced into specifications of cables plate imaging phase
Compare in the standard cable section answered.
Range measurement uses laser range finder described in step (3).During measurement cable distance, if cable is thinner, can be with
At electric pole approximate measure is being done by means of line bar 6.
Step (4) and (5) can also be automatically obtained by the APP application software being set in advance in mobile phone.
Because actual cable is that, by standard application, there is more differential than larger between each specification, even if relatively
From the point of view of sectional area, the difference of its diameter is also 20% or so, therefore the method for the present invention is enough to can determine that photo specification to be measured, without
Influenceed by trickle measured deviation.
It is used for aerial condutor line footpath noncontact setting-out line cable on-gauge plate the invention also discloses one kind.
A kind of specifications of cables plate, including on-gauge plate body, it is characterised in that parallel is furnished with the on-gauge plate body
Multiple standard cable sections corresponding with standard cable.
The on-gauge plate body is transparency glass plate, and the on-gauge plate body is provided with parallel lines 1-3.
Standard cable section on the on-gauge plate body cuts section by reality aerial cable.It is actual when choosing, it is optional such as
Conductor cross-section is 25,35,50,70,95,120,150,185,240,300,400 square millimeters of equal-specifications.
When making specifications of cables plate 1, multiple specifications that can be as used by actual aerial cable cut the standard cable section,
Then conventional standard cable section is horizontally fixed on the on-gauge plate body body, and corresponding mark 1- is marked in side
1, such as NO.1；NO.2 etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (8)
1. a kind of aerial condutor line footpath noncontact assay method, including camera and specifications of cables plate, it is characterised in that the line
Cable on-gauge plate includes on-gauge plate body, and parallel is furnished with multiple normal lines corresponding with standard cable on the on-gauge plate body
Cable section, measuring process is as follows：
(1) specifications of cables plate is placed at camera distance established standardses distance, the focal length for locking camera is taken pictures, in photograph
Comparison of standards picture is formed in machine；
(2) near cable to be measured, selection is suitable to set up the position of the camera, fixed camera；
(3) measure the object distance distance between camera and cable under test and record, select described in camera focal and step (1)
The focal length for locking camera is consistent, cable under test is entered shooting window, takes pictures to form picture in kind；
(4) according to the established standardses distance and the object distance distance, proportionality coefficient is converted, by picture in kind in the ratio system
Number adjustment, makes it consistent with Comparison of standards picture；Picture after adjustment is saved as into contrast picture in kind；
(5) picture that contrasts in kind is compared with Comparison of standards picture, that is, judges cable under test in contrast picture in kind
Picture traverse, find out the closest standard cable segment labeling of width in Comparison of standards picture, that is, be defined as corresponding to be measured
Cable specification.
2. aerial condutor line footpath noncontact assay method according to claim 1, it is characterised in that the camera is hand
Machine or single-lens reflex camera.
3. aerial condutor line footpath noncontact assay method according to claim 2, it is characterised in that in the step (4)
Com-parison and analysis, including picture is imported into computer, picture is entered into line definition treatment, proportionality coefficient treatment forms the contrast in kind
Picture, and material object contrast picture is displaced to specifications of cables plate and is imaged in corresponding standard cable section compare.
4. the aerial condutor line footpath noncontact assay method according to any one of claims 1 to 3, it is characterised in that step
(3) range measurement described in uses laser range finder.
5. the aerial condutor line footpath noncontact assay method according to any one of claims 1 to 3, it is characterised in that step
(4) it is automatically obtained by the APP application software being set in advance in mobile phone with (5).
6. a kind of specifications of cables plate, including on-gauge plate body, it is characterised in that parallel is furnished with many on the on-gauge plate body
Individual standard cable section corresponding with standard cable.
7. specifications of cables plate according to claim 6, it is characterised in that the on-gauge plate body is transparency glass plate, institute
State on-gauge plate body and be provided with parallel lines.
8. specifications of cables plate according to claim 7, it is characterised in that standard cable section on the on-gauge plate body by
Reality aerial cable cuts section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710053123.5A CN106840005A (en) | 2017-01-24 | 2017-01-24 | A kind of aerial condutor line footpath noncontact assay method and specifications of cables plate |
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| CN201710053123.5A CN106840005A (en) | 2017-01-24 | 2017-01-24 | A kind of aerial condutor line footpath noncontact assay method and specifications of cables plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110360948A (en) * | 2019-07-09 | 2019-10-22 | 大连理工大学 | A kind of laser cladding layer and Pool characterizing method |
| CN111014709A (en) * | 2019-12-30 | 2020-04-17 | 西安赛隆金属材料有限责任公司 | Method and device for determining flame length of plasma arc |
| CN113701651A (en) * | 2021-10-20 | 2021-11-26 | 国网天津市电力公司电力科学研究院 | Cable insulation core size detection method, device and system |
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Application publication date: 20170613 |