CN104034734B - Winch steel cable detection device and method thereof - Google Patents
Winch steel cable detection device and method thereof Download PDFInfo
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- CN104034734B CN104034734B CN201410286650.7A CN201410286650A CN104034734B CN 104034734 B CN104034734 B CN 104034734B CN 201410286650 A CN201410286650 A CN 201410286650A CN 104034734 B CN104034734 B CN 104034734B
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 9
- 229910000831 Steel Inorganic materials 0.000 title abstract 5
- 239000010959 steel Substances 0.000 title abstract 5
- 238000012545 processing Methods 0.000 claims description 16
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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Abstract
The invention provides a winch steel cable detection device, which comprises an image acquisition unit suitable for being installed on the front surface of a winch steel cable, wherein the image acquisition unit comprises an imager, an upper laser and a lower laser, wherein: the imager is arranged between the upper laser and the lower laser and has a distance with the steel cable, wherein the imager is provided with a lens and takes the steel cable as a collection target, the upper laser and the lower laser are the same component, and are arranged relative to the front and back directions of the lens and are provided with light-emitting ports, the light-emitting ports respectively face the imager to collect the target by included angles relative to the target, and the light curtain projected respectively and the imager collect the target area to form a coincidence area, and the coincidence area is a spot area.
Description
Technical field
The present invention relates to technical field, espespecially a kind of hoist engine wirerope detection means and its method for operation transport.
Background technology
The wirerope integrality detection method of prior art has:
1. there is construction hardly possible, wirerope had contact installation wirerope can be led to many in contact wirerope integrality detection method
One extra trouble point.
2. contactless wirerope integrality detection method generally uses photoelectricity to penetrating shading type, and photoelectricity correlation needs to install
Apart from 10 centimeters about of wirerope, equally to wirerope, normal operation has threat.
Content of the invention
For solving above-mentioned technical problem, present invention is primarily targeted at providing a kind of elevator that can lift Detection accuracy
Machine wirerope detection means and its method.
For reaching above-mentioned purpose, the technical scheme of present invention application is: a kind of hoist engine wirerope detection means is provided, including
It is adapted to mount to the image acquisition units in hoist engine wirerope front, this image acquisition units comprises imager and upper and lower laser instrument,
Wherein: this imager has spacing between described upper and lower laser instrument and with wirerope, wherein this imager have camera lens and with
Described wirerope is collection target, and described upper and lower laser instrument is identical components, arranges and all has with respect to the front and back position of this camera lens
There are light outlets, described light outlets are respectively facing this imager collection target, and the light curtain projecting respectively gathers mesh with this imager
Mark region forms coincidence area, and this coincidence area is facular area.
Preferred in the present invention, this imager also includes the optical filter being provided between main body and this main body and camera lens.
Preferred in the present invention, set image processing module in this main body, to being externally provided with electrical port and comprise external power supply
Port.
Preferred in the present invention, this image acquisition units also includes front upper intersection point, intersection point placed in the middle and descends intersection point afterwards.
Preferred in the present invention, on this, laser instrument is alignd this front upper intersection point setting with the central point of its light outlets, this imaging
Instrument is alignd this intersection point placed in the middle setting with the central point of its lens aperture, and this lower laser instrument is alignd with the central point of its light outlets
This rear lower intersection point setting.
Preferred in the present invention, this camera lens forms right angle with its aperture central point with this wirerope line, on this laser instrument with
Its light outlets central point forms 45 degree of angles with this wirerope line, and this lower laser instrument is with its light outlets central point with this wirerope even
Line forms 45 degree of angles.
For reaching above-mentioned purpose, the technical scheme of present invention application is: a kind of hoist engine wirerope detection method is provided, including
Image acquisition units are arranged on hoist engine wirerope front and there is the distance meeting collection wirerope information, this wirerope is that circulation is dynamic
State component, this image acquisition units is fixing stationary member and includes imager and upper and lower laser instrument, this imager includes main body
And camera lens, this body interior is provided with image processing module, wherein: by imager between upper and lower laser instrument, wherein imager
Target area face, for camera lens, the region that collection wirerope passes through directly, upper laser instrument is located at camera lens with respect to wirerope with 45 degree of angle
Earlier above and previous position, and lower laser instrument with respect to wirerope with 45 degree of angle be located at camera lens relatively after and lower position, when upper and lower
Laser instrument project light curtain to imager target area when, with target area in pass through wirerope formed relative constancy hot spot,
When stranded or fracture of wire in wirerope, the hot spot that imager collects will produce exception, enters row operation through image processing module
Send early warning signal afterwards.
Preferred in the present invention, when this constant hot spot is that wirerope stranded or fracture of wire phenomenon, its facula position, big
Little, shape and quantity are all unchanged；Conversely, when stranded or fracture of wire anomaly, its facula position, size, shape in wirerope
Shape and quantity therefore will produce change.
Preferred in the present invention, this imager also includes the optical filter being arranged between main body and camera lens.
Preferred in the present invention, this optical filter was used for filtering the light outside laser instrument.
Compared with prior art, it has the advantages that the present invention: is inclination 45 by upper and lower laser instrument with respect to wirerope
Degree angle setting so that wirerope behind object will not produce abnormal hot spot, thus efficiently solve collecting abnormal hot spot
And cause imager misjudgement, the technical problem of erroneous judgement.Simultaneously as employing visible ray to filter eyeglass, only allow infrared laser
Pass through, prevented the interference of ambient light completely so that simple, the efficient and accurate good result of image recognition algorithm.
Brief description
Fig. 1 is the structural representation of present pre-ferred embodiments.
Fig. 2 is the block diagram of agent structure in Fig. 1.
Fig. 3 is the locations of structures schematic diagram of the assembly that the present invention will solve technical problem.
Specific embodiment
With reference to specific embodiment and accompanying drawing, the present invention is described in further detail.It is described below in detail the present invention's
Embodiment, the example of described embodiment is shown in the drawings, and wherein same or similar label represents identical or class from start to finish
As element or the element with same or like function.Embodiment below with reference to Description of Drawings is exemplary, only
For explaining technical scheme, and it is not construed as limitation of the present invention.
In describing the invention, term " interior ", " outward ", " longitudinal ", " horizontal ", " on ", D score, " top ", " bottom " etc. refer to
The orientation showing or position relationship are based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention rather than
The present invention is required must to be therefore not construed as limitation of the present invention with specific azimuth configuration and operation.
The present invention provides a kind of hoist engine wirerope detection means.Refer to shown in Fig. 1, in embodiments of the present invention, institute
State hoist engine wirerope detection means in addition to including power supply (not shown), connecting computer (not shown), also include wirerope 10, figure
As collecting unit 20.
Hereafter described hoist engine wirerope detection means will be described in further detail each part and its operation principle.
Described wirerope 10 be longitudinally disposed, at least 1, in the present embodiment, it is illustrated that in be arranged side by side being equidistantly positioned
There are 4, and include stranded or fracture of wire 11.
Described image collecting unit 20 is installed on this wirerope 10 front and includes imager 21 and first, second 1 wordline and swash
Light device 22,23(hereinafter referred to as " upper and lower laser instrument "), wherein: this imager 21 to gather wirerope 10 image information as target, if
It is placed between described upper and lower laser instrument 22,23, and there is and wirerope 10 between the distance of collection optimized image information；On described,
Lower laser instrument 22,23 is identical components, and the setting angle of its projecting direction gathers wirerope 10 mesh towards described imager 21 respectively
Target position is so that this upper and lower laser instrument 22,23 projection light curtain respectively can gather mesh target area with described imager 21
Form coincidence area (as facular area) 30.In the present embodiment, this imager 21 includes main body 211, camera lens 212 and in this main body
It is provided with optical filter 213 between 211 and camera lens 212, please refer to shown in Fig. 2, described main body 211, inside set image processing module
2111 and for the electrical port 2112 of external connection, described electrical port 2112 is by cable with described computer even
Logical.In the present embodiment, described main body 211 is additionally provided with external power supply port 2113, is available for dc source and accesses.Referring again to
Shown in Fig. 1, the particular location that this camera lens 212 is installed with described upper and lower laser instrument 22,23 is: laterally sees, described upper and lower laser
Device 22,23 is in arrange in front and back with respect to this camera lens 212 position.In the present embodiment, this imager 21 and described upper and lower laser instrument
22nd, longitudinally disposed spacing is equidistant between 23, or because of its longitudinally disposed spacing needed for other factorses alternatively
Spacing.However, the spacing that between this camera lens 212 and described upper and lower laser instrument 22,23, horizontal (before and after i.e.) is arranged is equidistant,
Or the spacing because of its horizontally set needed for other factorses is alternatively unequal-interval.
Close to clearly demonstrate the position that between this imager 21 and described upper and lower laser instrument 22,23, vertical, horizontal is laid
System, illustrates with reference to image acquisition units in Fig. 1 20:
Position laid by the assembly (as above laser instrument 22, imager 21 and lower laser instrument 23) that this image acquisition units 20 includes
Put, for example:
Look at reference to refering to shown in Fig. 3, transversely arranged (i.e. in the past, back side) between assembly divides, and is indulged with a, b, c tri-
Line is as mark；Longitudinal arrangement (i.e. with upper and lower position) between assembly divides, with d, e, f tri- horizontal line as mark.Press below
The coordinate line orientation that its ordinate is intersected with horizontal line is made to illustrate into a line, wherein: relatively preceding a line is with relative in upper d line phase
Hand over, that is, form ad intersection point (referred to as " front upper intersection point "), relatively in b line with relatively in e line intersect, i.e. formation be intersection point
(referred to as " intersection point placed in the middle "), and relatively posterior c line with relatively under f line intersect, that is, formation cf intersection point is (referred to as " under afterwards
Intersection point ").However, when installing imager 21, the central point of its lens imaging need to be coincided with the coordinate position of intersection point placed in the middle；
When installing laser instrument 22, the central point of laser instrument 22 light outlets need to be coincided with the coordinate position of front upper intersection point thereon, with
And when installing lower laser instrument 23, the central point of its lower laser instrument 23 light outlets need to be coincided with the coordinate position of rear lower intersection point.
Installation site and its target direction respectively of these assemblies are further described below, for example: e line is extended forward, its with
It is considered as the decile straight angle (i.e. upper and lower two right angles) between wirerope 10, therefore when installing imager 10 with reference to e line, its lens aperture
It is upper and lower right angle between central point and wirerope 10.However, between the central point of lens aperture and wirerope 10 for right angle being thereby
Example makees reference, and on this, the ray of the central point of laser instrument 22 light outlets is just formed as 45 degree of angles when intersecting with wirerope 10 downwards, according to
On this this, laser instrument 22 is in downwards the orientation installation at 45 degree angles, by that analogy, this lower laser instrument 23 light outlets with respect to wirerope
Also 45 degree of angles can be formed as with wirerope 10 when the ray of central point is intersected upwards, according to this this lower laser instrument 23 then with respect to wirerope to
The upper orientation in 45 degree of angles is installed.In the present embodiment, described imager 21 is based on respect to collection target (as wirerope 10) system
Right angle is installed, when described upper and lower laser instrument 22,23 is to cover imager 21 collection target (as wirerope 10) for projection target,
It is respectively 45 degree of angle and installs.Thereby imager 21 right angle placed in the middle is installed and this upper and lower laser instrument 22,23 difference
Occupy forward and backward and to tilt the installations of 45 degree angles technological means, it is to avoid project the skill that unrelated hot spot is formed on the object of behind
Art problem, thus effectively improve Product Precision.
Described facular area 30 be this imager 21 acquisition zone with this upper and lower laser instrument 22,23 projection areas overlapping region (
Claim in " light curtain area "), this facular area 30 is available for that wirerope 10 is movable within, and described wirerope 10 is shared when moving in this facular area 30
Regional extent is generally less than the scope of this facular area 30, thereby makes this upper and lower laser instrument 22,23 be projeced into what movement came
Hot spot 31,32 is formed on this wirerope 10.When this wirerope exceeds facular area 30) when, imager 21 will not gather, as no hot spot
Area 33(is as shown in Figure 1), equally, just because of this upper and lower laser instrument 22,23 is to tilt 45 degree of angle settings with respect to wirerope, so
Wirerope behind object also will not produce abnormal hot spot, thereby accounted for detection means and mistakenly collected abnormal hot spot and cause mistake
The technical problem sentence, judged by accident, thus greatly improved the accuracy rate of detection.
To sum up, primarily illustrate structure and the construction of this hoist engine wirerope detection means, be briefly described as follows its work former
Reason:
This detection means is mainly used on elevator, and the light source of wherein said upper and lower laser instrument 22,23 is to be driven with direct current
Dynamic, the laser of its transmitting will form straight line, rather than usual point-like on Plate Target.But if target is lines
(as wirerope 10) then can form point-like laser hot spot, (as hot spot 31,32).Its setting angle is primarily to avoid laser in mesh
Form hot spot on the object of mark (wirerope 10) behind, also avoid image acquisition units 20 to collect this kind of hot spot and disturb accurately
Judge.However, described hot spot 31,32 is to be formed by laser transmitter projects to wirerope 10, then by located at this wirerope 10
The camera lens 212 in front gathers described hot spot 31,32, through image processing module 2111 relatively after spot signal is transferred to computer
Middle imaging and reach testing goal.
Referring again to shown in Fig. 1, described hoist engine wirerope detection means in detection process, in order to avoid collecting laser
Formed hot spot on target (wirerope 10) behind object, the target that described upper and lower laser instrument 22,23 is projected, with respect to camera lens
The target of 212 collections is installed with 45 degree about of angle.Camera lens is used to gather the laser facula on wirerope 10, and image procossing
Module 2111 then has identification facula position, size, shape and quantity function, thereby judges wirerope 10 by the variation of hot spot
Whether intact, thus reach detection early warning effect.Here is also necessary the explanation for example to its Detection results, for example: upper and lower
When laser instrument 22,23 is projeced into the wirerope 10 moving through, under normal circumstances, the position of hot spot 31, size, shape and quantity
Etc. should be constant (as label 31 in Fig. 1)；When abnormal (as stranded or fracture of wire 11) in wirerope 10, it is in facular area 30
Hot spot can invar cable 10 abnormal and the change of (as facula position, size, shape or quantity) occur, in such as Fig. 1, wirerope 10
Because stranded or fracture of wire 11 produce exception, that is, increase hot spot 32 or reduce hot spot 31, in the present embodiment, be exemplified as fracture of wire 11,
Increased hot spot 32.Due to this detection means in the face of wirerope 10 carries out uninterruptedly detecting early warning, effectively elevator is used
Control within safety coefficient.In the present embodiment, described optical filter 213 can be used to filter the light outside laser instrument.?
In the present embodiment, upper intersection point, intersection point placed in the middle and descend the upper laser instrument 22 of intersection point, imager 21 and lower sharp afterwards before being respectively positioned at
Light device 23 is provided in the integral mechanism in identical carrier, and this front upper intersection point, intersection point placed in the middle and descend afterwards intersection point be at
The different aspects of one carrier；In the present embodiment, because of the change of installation environment factor, its upper intersection point before being respectively positioned at, placed in the middle
Intersection point and descend upper laser instrument 22, imager 21 and the lower laser instrument 23 of intersection point to belong to the mechanism of discrete setting afterwards, and before this on
Intersection point, intersection point placed in the middle and descend intersection point to be at the different aspects of different carriers afterwards.
In the present embodiment, described target image and predetermined threshold value are compared by this image processing module 2111, if institute
State that target image is some region of change with respect to described predetermined threshold value, then judge that described target area exists abnormal, enter
And obtain testing result.Preferably, image processing module 2111 includes the embedded processing unit with image processing function, such as
Cpu or dsp processing unit, image processing module 2111 is based on default image detection algorithm therein to be carried out to described target image
Detection, and obtain testing result.
In the present embodiment, this image processing module 2111 is connected by computer, also can directly and elevator operation monitoring
Module electrical connection (not shown).After image processing module 2111 detection finishes, elevator operation monitoring module is according to described detection knot
Fruit sends a warning message to elevator operation monitoring platform (not shown), notifies maintaining unit to carry out maintenance and changes.
Preferably, also can coordinate the set-up mode of laser works in the present invention using multiple imagers, may also be employed many
Individual laser instrument is installed with different angles and is coordinated the set-up mode of imager, thus improving further or widening of the present invention
The precision of detection means or application.
The detection means that the present invention provides adopts oblique laser device to coordinate the operation principle of imager, its laser instrument light curtain energy
Enough coverage goal regions, it is to avoid form unrelated hot spot on the object of behind and cause missing inspection or flase drop, that is, accuracy of detection is not enough
Shortcoming；On the other hand laser image is gathered by imager, laser is compared based on image detection algorithm by image processing module
Whether exception occurring in image, whether there is extremely thus differentiating in described target area.The present invention has accuracy of detection height, inspection
The advantage surveying non-blind area, thus being prevented effectively from the security incident of elevator, whole device structure is simple simultaneously, working stability, system
With low cost.
Claims (9)
1. a kind of hoist engine wirerope detection means, including the image acquisition units being adapted to mount to hoist engine wirerope front, image
Collecting unit comprises imager and upper and lower laser instrument, and imager has spacing between upper and lower laser instrument and with wirerope, its
Middle imager has camera lens and with wirerope for gathering target, and upper and lower laser instrument is identical components, with respect to the front and back position of camera lens
Setting and be respectively provided with light outlets, light outlets are respectively facing imager collection target with respect to target with angle, and project respectively
Light curtain and imager collection target area formed overlap area it is characterised in that: coincidence area is imager acquisition zone and upper and lower laser
Think highly of folded projection and for wirerope facular area movable within, wherein: upper and lower laser instrument be transmitted on Plate Target for one
Line light, when wirerope is through out-of-date, then can form some shaped laser spots on wirerope, thus avoiding wirerope behind object to produce abnormal light
Spot, avoids abnormal hot spot to produce interference to image acquisition units simultaneously.
2. hoist engine wirerope detection means as claimed in claim 1 it is characterised in that: set image processing module in main body, to
It is externally provided with electrical port and comprise external power supply port.
3. hoist engine wirerope detection means as claimed in claim 2 it is characterised in that: image acquisition units are submitted before also including
Point, intersection point placed in the middle and descend intersection point afterwards, wherein: the position relationship laid between imager and upper and lower laser instrument can be divided into laterally
Arrangement and longitudinal arrangement, transversely arranged is to be divided into a, b, c tri- ordinate in front and back, and longitudinal arrangement is to be divided into d, e, f up and down
Three horizontal lines, a line and d line upper intersection point before being crossed to form, b line and e line are crossed to form intersection point placed in the middle and c line and are crossed to form with f line
Descend intersection point afterwards.
4. hoist engine wirerope detection means as claimed in claim 3 it is characterised in that: upper laser instrument is with the center of its light outlets
This front upper intersection point setting of point alignment, imager is alignd this intersection point setting placed in the middle with the central point of its lens aperture, and this lower swashs
Light device is alignd this rear lower intersection point setting with the central point of its light outlets.
5. hoist engine wirerope detection means as claimed in claim 4 it is characterised in that: camera lens is with its aperture central point and wirerope
Line forms right angle, and upper laser instrument forms 45 degree of angles with its light outlets central point with wirerope line, and lower laser instrument is with it
Optical port central point forms 45 degree of angles with wirerope line.
6. a kind of method of the hoist engine wirerope detection means using as described in any one of claim 1 to 5 it is characterised in that:
By imager between upper and lower laser instrument, wherein: the target area of imager faces, for camera lens, the area that collection wirerope passes through directly
Domain, upper laser instrument is located at camera lens earlier above and previous position with respect to wirerope with 45 degree of angle, and lower laser instrument is with respect to wirerope
With 45 degree of angle be located at camera lens relatively after and lower position, when upper and lower laser instrument project light curtain to imager target area when,
Form the hot spot of relative constancy with the wirerope passing through in target area, when wirerope occurs stranded or when splitting burst, imager collects
Hot spot will produce exception, enter after row operation transmission early warning signal through image processing module.
7. hoist engine wirerope detection means as claimed in claim 6 method it is characterised in that: constant hot spot be wirerope not
When stranded or fracture of wire phenomenon, its facula position, size, shape and quantity are all unchanged；Conversely, when wirerope occur stranded or
Split the anomaly of stock, its facula position, size, shape and quantity therefore will produce change.
8. hoist engine wirerope detection means as claimed in claim 7 method it is characterised in that: imager also includes being arranged on
Optical filter between main body and camera lens.
9. hoist engine wirerope detection means as claimed in claim 8 method it is characterised in that: this optical filter was used for filtering
Light outside laser instrument.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410286650.7A CN104034734B (en) | 2014-06-25 | 2014-06-25 | Winch steel cable detection device and method thereof |
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| CN201410286650.7A CN104034734B (en) | 2014-06-25 | 2014-06-25 | Winch steel cable detection device and method thereof |
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| CN104034734B true CN104034734B (en) | 2017-01-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108375442B (en) * | 2018-01-19 | 2020-07-14 | 西北工业大学 | Device for measuring tension and swing angle of tether in non-contact manner |
| CN112859189B (en) * | 2020-12-31 | 2024-08-02 | 广东美的白色家电技术创新中心有限公司 | Workpiece detection device, workpiece detection method, and computer-readable storage medium |
| CN112669315B (en) * | 2021-01-27 | 2023-02-03 | 长沙理工大学 | Method and device for detecting wire breakage of steel wire rope of winch |
| CN117969412A (en) * | 2024-01-31 | 2024-05-03 | 大连理工大学 | Cableway steel wire rope real-time detection device and method based on FPGA |
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