CN110255324A - A kind of elevator traction sheave sliding amount detecting device and method - Google Patents
A kind of elevator traction sheave sliding amount detecting device and method Download PDFInfo
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- CN110255324A CN110255324A CN201910653514.XA CN201910653514A CN110255324A CN 110255324 A CN110255324 A CN 110255324A CN 201910653514 A CN201910653514 A CN 201910653514A CN 110255324 A CN110255324 A CN 110255324A
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- traction sheave
- elevator
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- picture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The present invention discloses a kind of elevator traction sheave sliding amount detecting device and method, is related to elevator detection field, specifically includes that traction sheave marks, host computer, and the stay wire displacement sensor and camera that are separately connected with host computer；Traction sheave marks the outer profile for being set to traction sheave at equal intervals；Car position data when stay wire displacement sensor is recorded in when elevator brings into operation and elevator is out of service；The outer profile of camera face traction sheave, the primary optical axis of camera, any one traction sheave mark, the center of circle of traction sheave is respectively positioned in same horizontal line, for carrying out the acquisition an of picture to traction sheave before elevator brings into operation and bringing into operation from elevator to elevator end of run, the acquisition of continuous picture is carried out to traction sheave；Host computer receives the data of stay wire displacement sensor record and all pictures of camera acquisition to determine elevator traction sheave slippage.Device and method disclosed by the invention can accurately measure elevator traction sheave slippage.
Description
Technical field
The present invention relates to elevator detection fields, slide amount detecting device and method more particularly to a kind of elevator traction sheave.
Background technique
Elevator traction machine is hung on the rope sheave of traction machine as driving mechanism, wirerope, one end suspension craning cab, and the other end is outstanding
Hang counterweight.When traction machine rotates, traction is generated by the frictional force between traction sheave and wirerope to drive carriage or more
Movement.Carriage, due to wirerope both ends force unbalance, can generate certain elastic stretching during rising or falling, this
When the sliding of traction sheave and wirerope that generates belong to normal slip, but in elevator during long-time service, due to traction
Certain abrasion is generated between wheel or wirerope, a certain amount of sliding at this moment can be generated between traction sheave and wirerope, this is to belong to
In improper sliding.There is no between elevator traction sheave wear condition and traction sheave and wirerope for existing technical specification of security
Sliding have quantitative detection method and relevant sentence abandoned tender standard.Elevator using unit for elevator traction sheave and wirerope
Replacement is always a no small spending.In order to reduce unnecessary extra cost, elevator testing staff is relevant to these
Safety component is sentenced double cautious in useless.How to formulate it is quantitative sentence abandoned tender standard, be a urgent need to solve the problem, to traction sheave and steel
The quantitative detection of slippage between cord is to solve the problems, such as this problem firstly the need of solution.
Elevator traction sheave slippage refers to the distance to misplace between traction sheave and wirerope, big to detection slippage
It is small, it needs to measure the distance that the distance, wirerope that traction sheave passes by are passed by simultaneously, is run up and down since wirerope hauls carriage,
Therefore the distance that the distance and carriage that wirerope is passed by move up and down is equivalent, and the distance and wirerope passed by using traction sheave are passed by
The difference of both distances express elevator traction sheave sliding magnitude.
The method of existing detection elevator traction sheave slippage is that elevator maintenance staff are by using ruler, to wirerope
Dropping distance in rope groove measures, when dropping distance be greater than 0.1mm, that is, think elevator there are larger sliding, need into
Row more change steel rope or traction sheave.The sliding that this method cannot generate elevator carries out quantitative analysis, simply by one
The dropping distance of correlative, i.e. wirerope in rope groove carries out the judgement of elevator sliding, and there is no a determining correspondences for the two
Relationship, the relatively fuzzyyer sliding being unfavorable for elevator of this method carry out more accurate judgement.
Summary of the invention
The object of the present invention is to provide a kind of elevator traction sheave sliding amount detecting device and methods, can be to elevator traction sheave
Slippage is accurately measured.
To achieve the above object, the present invention provides following schemes:
A kind of elevator traction sheave slides amount detecting device, comprising: traction sheave label, host computer, and with the computer
The stay wire displacement sensor and camera that host is separately connected；
The traction sheave label is set to the outer profile of traction sheave at equal intervals；
One end of the stay wire displacement sensor is mounted on the hoistway position of elevator(lift) machine room, and the other end is mounted on the top of carriage
Portion；The car position data when stay wire displacement sensor is used to be recorded in when elevator brings into operation and elevator is out of service；
The camera is fixed on the side of traction sheave, and the outer profile of face traction sheave, the primary optical axis of the camera, any
One traction sheave marks, the center of circle of traction sheave is respectively positioned in same horizontal line；The camera in elevator for bringing into operation
It is preceding that the acquisition an of picture is carried out to traction sheave and is brought into operation from elevator to elevator end of run, traction sheave is carried out continuous
The acquisition of picture；
The host computer receives the data of the stay wire displacement sensor record and all pictures of camera acquisition
To determine elevator traction sheave slippage.
Optionally, further includes: A-frame；The A-frame is set to the side of traction sheave, and the camera is fixed on
On the A-frame, mark the primary optical axis of the camera, any one of traction sheave by adjusting the A-frame,
The center of circle of traction sheave is respectively positioned in same horizontal line.
Optionally, the camera is the camera with fixed frequency of taking pictures；Traction in individual photo opporunity of the camera
The moving displacement of wheel is less than or equal to the absolute visual field height of the camera；The fixation takes pictures frequency as in running process of elevator
All traction sheaves can be made to mark the frequency all photographed, at most shown described in one in every picture that the camera obtains
Traction sheave label.
Optionally, the model SWH02 of the stay wire displacement sensor.
Optionally, one end of the stay wire displacement sensor is mounted on elevator(lift) machine room hoistway the top, and institute by bolt
It states stay wire displacement sensor and computer room ground is contour；The other end of the stay wire displacement sensor is mounted on car roof by bolt
Portion.
Optionally, the host computer includes receiving unit, image processing unit and computing unit；
The receiving unit is connect with the stay wire displacement sensor and the camera respectively, for receiving the bracing wire position
Car position data when car position data and elevator out of service of the elevator of displacement sensor record when bringing into operation, and
All pictures of the camera acquisition；
Described image processing unit is connect with the receiving unit, and all pictures for acquiring to the camera carry out figure
As processing, the traction sheave label is obtained；
The computing unit is connect with the receiving unit and described image processing unit respectively, for according to the electricity
Car position data when car position data and the elevator out of service when ladder brings into operation calculates carriage and moves up and down
Distance, and according to the traction sheave mark calculate traction sheave move distance, be also used to be moved up and down according to the carriage
The move distance of distance and the traction sheave calculates elevator traction sheave slippage.
To achieve the above object, the present invention also provides following schemes:
A kind of elevator traction sheave sliding quantity measuring method, comprising:
Obtain the initial position picture that camera acquires traction sheave before elevator brings into operation；
Camera takes pictures what frequency acquired traction sheave with fixation during acquisition elevator brings into operation to elevator end of run
Continuous picture；
Image procossing is carried out to the continuous picture, obtains the total degree n1 that traction sheave label occurs；
Image procossing is carried out to last picture of the initial position picture and the continuous picture, is obtained described first
The centroid position of the label of traction sheave described in beginning position picture and last described picture, and according to the two centroid position meters
Calculate actual range L3 of the traction sheave label relative to initial position；
Total degree n1, interval k1 and the traction sheave occurred according to traction sheave label is marked relative to initial position
Actual range L3, utilize formula L2=n1*k1+L3 calculate traction sheave move distance L2；The interval k1 is adjacent described
The distance between traction sheave label；
Car position data b1 and elevator when the elevator of acquisition stay wire displacement sensor record brings into operation is out of service
When car position data b2；
Car position when car position data b1 and the elevator out of service when being brought into operation according to the elevator
The move distance L2 of data b2 and the traction sheave, utilize formula L=| b2-b1-L2 | calculate elevator traction sheave slippage L.
Optionally, camera is with fixed frequency of taking pictures to draging during the acquisition elevator brings into operation to elevator end of run
The continuous picture of running wheel acquisition, specifically includes:
According to the speed of service v of elevator and the interval k1, taken pictures using the fixation that the camera is arranged in formula f=v/k1
Frequency；The moving displacement of traction sheave is less than or equal to the absolute visual field height of the camera in individual photo opporunity of the camera；
Fixation frequency of taking pictures is that all traction sheaves can be made to mark the frequency all photographed, the phase in running process of elevator
The traction sheave label is at most shown in every picture that machine obtains；
Camera during elevator brings into operation to elevator end of run is obtained to adopt traction sheave with fixation frequency of taking pictures
The continuous picture of collection.
Optionally, described that image procossing is carried out to the continuous picture, obtain the total degree n1 that traction sheave label occurs, tool
Body includes:
According to the size of traction sheave label, threshold value T is set；The threshold value T is less than the face of traction sheave label
Product size, and the threshold value T is at least the 1/3 of the size of the traction sheave label；
After successively carrying out gray processing, binary conversion treatment to every picture, then connection region is constructed, determines maximum connection region
Area S；The continuous picture includes plurality of pictures；
If maximum connection region area S is greater than threshold value T, records the traction sheave label and occur once；If maximum connection
Region area S is less than threshold value T, then records the traction sheave label and occur 0 time；
The number occurred to traction sheave label sums up, and the total degree n1 that the traction sheave label occurs is calculated.
Optionally, described last picture to the initial position picture and the continuous picture carries out at image
Reason obtains the centroid position of the label of traction sheave described in the initial position picture and last described picture, and according to two
The centroid position calculates actual range L3 of the traction sheave label relative to initial position, specifically includes:
Gray processing is carried out, at binaryzation to last picture of the initial position picture and the continuous picture respectively
After reason, then connection region is constructed, retains maximum connection region；
According to each maximum connection region, the matter of the corresponding traction sheave label of the initial position picture is calculated
The centroid position of the corresponding traction sheave label of last picture of heart position and the continuous picture；
According to the vertical pixel number and the pixel equivalent calculating traction sheave label phase between two centroid positions
For the actual range L3 of initial position.
The specific embodiment provided according to the present invention, the invention discloses following technical effects: the present invention discloses a kind of electricity
Terraced traction sheave sliding amount detecting device and method, are recorded in when elevator brings into operation using stay wire displacement sensor and elevator stops
Car position data when operation does being spaced equal traction sheave and mark by the outer profile in traction sheave, using camera to draging
Running wheel carries out the acquisition of picture, carries out image procossing by picture of the host computer to acquisition, obtains the move distance of traction sheave,
To the position data and figure of position data and carriage when elevator is out of service according to carriage when elevator brings into operation
The move distance of the traction sheave shown in piece accurately measures elevator traction sheave slippage, realizes that the sliding generated to elevator is determined
The analysis of amount and more accurate judgement.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural front view that elevator traction sheave of the present invention slides amount detecting device embodiment；
Fig. 2 is the structural side view that elevator traction sheave of the present invention slides amount detecting device embodiment；
Fig. 3 is the flow chart that elevator traction sheave of the present invention slides quantity measuring method embodiment；
Fig. 4 is camera absolute visual field schematic diagram of the present invention；
Fig. 5 is continuous picture process flow diagram of the present invention；
Fig. 6 is the schematic diagram that the present invention is observed perpendicular to traction sheave disc direction；
Fig. 7 is that elevator traction sheave of the present invention slides amount detecting device process for using figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of elevator traction sheave sliding amount detecting device and methods, can be to elevator traction sheave
Slippage is accurately measured.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention will be further described in detail.
Fig. 1 is the structural front view that elevator traction sheave of the present invention slides amount detecting device embodiment, and Fig. 2 is elevator of the present invention
The structural side view of traction sheave sliding amount detecting device embodiment.Referring to Fig. 1 and Fig. 2, which slides amount detection device
Setting includes: traction sheave label 6, host computer 11, and the stay wire displacement sensor 8 that is separately connected with the host computer 11 and
Camera 5.
The traction sheave label 6 is set to the outer profile of traction sheave 2 at equal intervals.And guarantee lower of 5 visual field of camera
The traction sheave label 6 can occur.
One end of the stay wire displacement sensor 8 is mounted on the hoistway position of elevator(lift) machine room, and the other end is mounted on carriage 10
Top；The car position when stay wire displacement sensor 8 is used to be recorded in when elevator brings into operation and elevator is out of service
Data.Since elevator is that the traction provided by wirerope 3 pulls carriage 10 to move up and down in the process of running, that
It is considered that the move distance of carriage 10 is the move distance of wirerope 3.Bracing wire is installed by the hoistway position in computer room
Displacement sensor 8, the other end of stay wire displacement sensor 8 are mounted on the top of carriage 10, in the process that carriage 10 moves up and down
In can detecte the distance of the movement of carriage 10, the numerical difference of stay wire displacement sensor 8 is carriage 10 before and after elevator operation
Move distance, that is, the move distance of wirerope 3.Traction sheave driving motor 7 drives traction sheave 2 to rotate.Directive wheel 4 is steel wire
Rope 3 provides traction.
Preferably, one end of the stay wire displacement sensor 8 is mounted on elevator(lift) machine room hoistway the top, and institute by bolt
It states stay wire displacement sensor 8 and computer room ground 9 is contour；The other end of the stay wire displacement sensor 8 is mounted on sedan-chair by bolt
10 top of compartment.The model SWH02 of the stay wire displacement sensor 8.
The camera 5 is fixed on the side of traction sheave 2, and the outer profile of face traction sheave 2, the primary optical axis of the camera 5,
Any one of traction sheave label 6, traction sheave 2 the center of circle be respectively positioned in same horizontal line；The camera 5 in elevator for opening
Begin to bring into operation to the acquisition of the picture of progress of traction sheave 2 and from elevator to elevator end of run before operation, to traction sheave 2
Carry out the acquisition of continuous picture.
The camera 5 is the camera with fixed frequency of taking pictures；Traction sheave 2 in individual photo opporunity of the camera 5
Moving displacement is less than or equal to the absolute visual field height of the camera 5；The fixation takes pictures frequency as the energy in running process of elevator
The frequency for photographing all traction sheave labels 6 all is at most shown described in one in every picture that the camera 5 obtains
Traction sheave label 6.
The camera 5 is charge-coupled device camera.The picture that the camera 5 acquires need to ensure the traction sheave
Label 6 is located at central region position.
The host computer 11 receives the data of the record of stay wire displacement sensor 8 and owning for the acquisition of the camera 5
Picture is to determine elevator traction sheave slippage.
The host computer 11 includes receiving unit, image processing unit and computing unit.
The receiving unit is connect with the stay wire displacement sensor 8 and the camera 5 respectively, for receiving the bracing wire
Car position data when car position data and elevator out of service of the elevator that displacement sensor 8 records when bringing into operation,
And all pictures that the camera 5 acquires.
Described image processing unit is connect with the receiving unit, and all pictures for acquiring to the camera 5 carry out
Image procossing obtains the traction sheave label 6.
The computing unit is connect with the receiving unit and described image processing unit respectively, for according to the electricity
Car position data when car position data and the elevator out of service when ladder brings into operation calculates to be moved down in carriage 10
Dynamic distance, and according to the move distance of the traction sheave label 6 calculating traction sheave 2, it is also used to according to about 10 carriage
The move distance of mobile distance and the traction sheave 2 calculates elevator traction sheave slippage.
The elevator traction sheave slides amount detecting device further include: A-frame 1；The A-frame 1 is set to traction sheave 2
Side, the camera 5 is fixed on the A-frame 1, and the key light of the camera 5 is made by adjusting the A-frame 1
Axis, any one of traction sheave label 6, traction sheave 2 the center of circle be respectively positioned in same horizontal line.By adjusting the ginseng of camera 5
Number enables camera 5 to show clearly image.
Fig. 3 is the flow chart that elevator traction sheave of the present invention slides quantity measuring method embodiment.Referring to Fig. 3, the elevator traction
Wheel slip quantity measuring method includes:
Step 301: obtaining the initial position picture that camera acquires traction sheave before elevator brings into operation.
The picture that the initial position picture, that is, camera carries out traction sheave before elevator brings into operation is adopted
Collect result；The initial position picture includes a picture.
Step 302: camera takes pictures frequency to traction with fixation during acquisition elevator brings into operation to elevator end of run
Take turns the continuous picture of acquisition.
The continuous picture, that is, camera brings into operation from elevator to elevator end of run, carries out to traction sheave continuous
The collection result of picture；The continuous picture includes plurality of pictures.
The step 302 specifically includes:
According to the speed of service v of elevator and the interval k1, taken pictures using the fixation that the camera is arranged in formula f=v/k1
Frequency；The moving displacement of traction sheave is less than or equal to the absolute visual field height of the camera in individual photo opporunity of the camera；
Fixation frequency of taking pictures is that all traction sheaves can be made to mark the frequency all photographed, the phase in running process of elevator
The traction sheave label is at most shown in every picture that machine obtains.
Camera during elevator brings into operation to elevator end of run is obtained to adopt traction sheave with fixation frequency of taking pictures
The continuous picture of collection.
In the embodiment, it is that f/s takes pictures that frequency, which is fixed, using camera, is guaranteed in running process of elevator, each
For traction sheave label by that can be photographed when camera fields of view, the number of shot image and the runing time of elevator are related,
When frequency is f/s, the moving displacement of traction sheave is no more than the absolute visual field height of camera, guarantees each in running process of elevator
Traction sheave label can photograph, and be merely able to photograph one.Fig. 4 is camera absolute visual field schematic diagram of the present invention, referring to fig. 4,
If the fixed frequency of camera is f/s, the absolute visual field height of camera is h, and traction sheave radius is R, and the absolute visual field of camera is high
Spending h arc length corresponding in traction sheave is k1, and the interval of traction sheave label is also k1.Line segment CD is h, and arc CD is k1, radius
CO is R, be equivalent to radius find out to have a length in the circle of R for the string of h this string pair arc length be k1, solution side
Method are as follows:WithWhen the fortune of elevator
Scanning frequency degree is v (m/s), and the distance of 1s elevator motion is v meters (traction sheave 1s has turned over v meters of arc length), the fixed frequency f of camera
=v/k1, under this frequency, it is v/f that camera, which claps the distance that a picture traction sheave turns over, is exactly equal to the absolute visual field of camera
Arc length k1 corresponding to height, therefore can guarantee that, when frequency is f/s, the moving displacement of traction sheave is no more than the maximum of camera
Visual field height, each traction sheave label can photograph in running process of elevator, and be merely able to photograph one.
Step 303: image procossing being carried out to the continuous picture, obtains the total degree n1 that traction sheave label occurs.
The step 303 specifically includes:
According to the size of traction sheave label, threshold value T is set；The threshold value T is less than the face of traction sheave label
Product size, and the threshold value T is at least the 1/3 of the size of the traction sheave label；Size need to be set in advance in threshold value T,
Related with the size of the traction sheave label done, the area than done traction sheave label is smaller；The value of threshold value T can be set to institute
The 1/3 of the size of traction sheave label is stated, or is set as 1/3-the 2/3 of the size that the traction sheave marks, because
The area of traction sheave label in camera fields of view is area (the i.e. camera view after the traction sheave label projection on traction sheave outer profile
Yezhong traction sheave label area ratio traction sheave outer profile on traction sheave label true area it is small), due to traction sheave outside
Traction sheave on profile marks on curved surface, so the area after projection can become smaller, as long as therefore the threshold value T of setting the upper limit than
Traction sheave also wants small when marking projected area minimum, while the interference in the connection region of the formation of noise in order to prevent, T's
Lower limit cannot be arranged too small, and optimal setting is the 1/3 of the size of traction sheave label.
After successively carrying out gray processing, binary conversion treatment to every picture, then connection region is constructed, determines maximum connection region
Area S；The continuous picture includes plurality of pictures；Maximum connection region is the traction sheave label；If contained in image
Traction sheave label, then must be maximum one of area in connection region, other be all the region of interference, and area is smaller,
If marked without traction sheave in image, all connection regions are all interference regions.
If maximum connection region area S is greater than threshold value T, illustrates to mark in image containing traction sheave, then record the traction
Wheel label occurs once, and the total degree n1 in camera fields of view adds 1；If maximum connection region area S is less than threshold value T, illustrate image
In marked without containing traction sheave, then record traction sheave label and occur 0 time, the total degree n1 in camera fields of view adds 0, continues to locate
Next image is managed, until all image procossings are complete.
The number occurred to traction sheave label sums up, and the total degree n1 that the traction sheave label occurs is calculated.
Fig. 5 is continuous picture process flow diagram of the present invention, referring to Fig. 5, available electricity after handling continuous picture
Traction sheave label appears in the total degree n1 in camera fields of view in terraced operational process.
Step 304: image procossing being carried out to last picture of the initial position picture and the continuous picture, is obtained
The centroid position marked to traction sheave described in the initial position picture and last described picture, and according to two matter
Heart position calculates actual range L3 of the traction sheave label relative to initial position.
The step 304 specifically includes:
Gray processing is carried out, at binaryzation to last picture of the initial position picture and the continuous picture respectively
After reason, then connection region is constructed, retains maximum connection region (traction sheave label).
According to each maximum connection region, the matter of the corresponding traction sheave label of the initial position picture is calculated
The centroid position of the corresponding traction sheave label of last picture of heart position and the continuous picture.
According to the vertical pixel number and the pixel equivalent calculating traction sheave label phase between two centroid positions
For the actual range L3 of initial position.
In the embodiment, the traction sheave label is in last image relative to the actual range L3 of initial position
The distance L3 of traction sheave marking bias, elevator returns to original position after operation can generate sliding, and traction sheave label there should be no return to
Position originally, L3 be exactly represent it is out of service after, traction sheave marks moved distance.
Fig. 6 is the schematic diagram that the present invention is observed perpendicular to traction sheave disc direction, and referring to Fig. 6, circle O is the circle of traction sheave
The heart, straight line AB are the primary optical axis of camera and the center of circle isometry position of traction sheave, and C point is that traction sheave marks matter in last picture
Position (for above straight line AB) where the heart, D point be C point the direction straight line AB subpoint (along the side of straight line AB
To being projected, subpoint D is fallen on straight line EF), the angle β for arc AC pair central angle.By to C point and initial bit in image
The pixel set seeks the distance between available DO of difference, passes through the pixel equivalent (actual physics that a pixel represents in image
Size is how many) it is converted into actual distance, since the radius R of traction sheave is it is known that event:
Sin β=sin ∠ DCO=DO/R
β=arcsin (DO/R)
L3=arc AC=R × arcsin (DO/R).
Step 305: according to the traction sheave label occur total degree n1, interval k1 and the traction sheave label relative to
The actual range L3 of initial position calculates (practical turn of traction sheave of move distance L2 of traction sheave using formula L2=n1*k1+L3
The distance crossed)；The interval k1 is the distance between adjacent described traction sheave label.
Step 306: obtaining the car position data b1 and elevator when the elevator that stay wire displacement sensor records brings into operation
Car position data b2 when out of service.
Step 307: when car position data b1 and the elevator out of service when being brought into operation according to the elevator
The move distance L2 of car position data b2 and the traction sheave, utilize formula L=| b2-b1-L2 | calculate elevator traction sheave
Slippage L.
Fig. 7 is that elevator traction sheave of the present invention slides amount detecting device process for using figure, and referring to Fig. 7, which includes:
(1) before elevator brings into operation, it is divided into the traction sheave label of k1 between the outer profile of traction sheave is carried out, and pacifies
Vision inspection apparatus (camera) is installed, stay wire displacement sensor is installed.
(2) camera starts to adopt figure acquisition original image 1, reads stay wire displacement sensor reading and is denoted as b1.
(3) elevator brings into operation, and camera is fixed frequency and takes pictures, constantly acquisition original image.
(4) elevator operation stops, and camera collects last original image, while reading stay wire displacement sensor reading again
Number scale is b2.
(5) acquired image is handled, obtains traction sheave label in running process of elevator and appears in camera fields of view
In total degree n1, and traction sheave label and initial bit are handled to obtain in last image to last original image
Set the actual range L3 that traction sheave marks in image.
(6) distance that the distance L2 (distance that traction sheave turns over) and wirerope for calculating traction sheave operation are run be (carriage
Move distance) L1=| b1-b2 |.
(7) it is handled by host computer, final to calculate the slippage L=for obtaining elevator | L1-L2 |.
Elevator traction sheave sliding amount detecting device disclosed by the invention and method, record elevator using stay wire displacement sensor
Car position data when bringing into operation and when elevator is out of service is done by the outer profile in traction sheave and is spaced equal traction
Camera, is fixed on the side of traction sheave, and the outer profile of face traction sheave by wheel label, and the primary optical axis of camera, any one
A traction sheave marks, the center of circle of traction sheave is respectively positioned in same horizontal line；Using camera to traction sheave before elevator brings into operation
It carries out the acquisition an of picture and brings into operation from elevator to elevator end of run, continuous picture is carried out to traction sheave and is adopted
Collection calculates what carriage moved up and down using the lift car station-keeping data that host computer receives stay wire displacement sensor record
Distance (distance of wirerope movement), and all pictures of camera acquisition are received, by carrying out image procossing to all pictures,
The total degree and traction sheave that calculate traction sheave label appearance mark the actual range relative to initial position, thus according to traction
Wheel marks the actual range of interval and traction sheave label relative to initial position between the total degree occurred, traction sheave label
The move distance (distance that traction sheave turns over) of traction sheave is calculated, the distance and traction sheave finally moved up and down according to carriage
Move distance elevator traction sheave slippage is calculated, thus realize the slippage of elevator is accurately measured, to electricity
The sliding that ladder generates carries out quantitative analysis and more accurate judgement.
Disclosed by the invention to slide quantity measuring method based on stay wire sensor and the elevator traction sheave of machine vision, detection is draged
The range ability of running wheel is that upper equally spaced 4-8 traction sheaves label is done by the outer profile in traction sheave, passes through machine vision
The range ability of method detection traction sheave label obtain.During detecting the range ability of traction sheave, initial bit
Set be camera primary optical axis, the center of traction sheave label and the center of circle three of traction sheave is on same straight line.Detect steel wire
The range ability of rope be by the top of computer room install a stay wire displacement sensor, detect its to carriage top between away from
From what the range difference by calculating two different locations that elevator runs front and back obtained.The present invention detects elevator traction wheel slip
Method, can detecte the slippage that any floor is generated to any floor, i.e. the range ability of traction sheave and wirerope can be with
It obtains in real time.This method can carry out on-line checking, facilitate long-time service.The present invention passes through measuring steel wire rope and traction sheave respectively
Range ability ask again difference method can the slippage to elevator accurately measured, detect traction sheave and wirerope
Between the summation of the normal slip generated and improper sliding to quantitatively detect out elevator traction sheave slippage be elevator
Testing agency judges to provide foundation whether traction sheave failure, solves overhauling elevator personnel and judge that traction sheave is with steel wire iope slippage
It is no excessive, the problem of qualitative evaluation is done, by personal experience only convenient for being promoted the use of in elevator industry.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of elevator traction sheave slides amount detecting device characterized by comprising traction sheave label, host computer, Yi Jiyu
The stay wire displacement sensor and camera that the host computer is separately connected；
The traction sheave label is set to the outer profile of traction sheave at equal intervals；
One end of the stay wire displacement sensor is mounted on the hoistway position of elevator(lift) machine room, and the other end is mounted on the top of carriage；
The car position data when stay wire displacement sensor is used to be recorded in when elevator brings into operation and elevator is out of service；
The camera is fixed on the side of traction sheave, and the outer profile of face traction sheave, the primary optical axis of the camera, any one
The traction sheave marks, the center of circle of traction sheave is respectively positioned in same horizontal line；The camera is for right before elevator brings into operation
Traction sheave carries out the acquisition an of picture and brings into operation from elevator to elevator end of run, carries out continuous picture to traction sheave
Acquisition；
The host computer receives the data of the stay wire displacement sensor record and all pictures of camera acquisition with true
Determine elevator traction sheave slippage.
2. elevator traction sheave according to claim 1 slides amount detecting device, which is characterized in that further include: A-frame；
The A-frame is set to the side of traction sheave, and the camera is fixed on the A-frame, by adjusting the triangle
Bracket is respectively positioned on the center of circle of the primary optical axis of the camera, any one of traction sheave label, traction sheave in same horizontal line.
3. elevator traction sheave according to claim 1 slides amount detecting device, which is characterized in that the camera is with solid
Surely the camera for frequency of taking pictures；The moving displacement of traction sheave is less than or equal to the camera most in individual photo opporunity of the camera
Big visual field height；In running process of elevator all traction sheaves labels can all photographed fixation frequency of taking pictures
Frequency at most shows the traction sheave label in every picture that the camera obtains.
4. elevator traction sheave according to claim 1 slides amount detecting device, which is characterized in that the bracing wire displacement sensing
The model SWH02 of device.
5. elevator traction sheave according to claim 1 slides amount detecting device, which is characterized in that the bracing wire displacement sensing
One end of device is mounted on elevator(lift) machine room hoistway the top by bolt, and the stay wire displacement sensor and computer room ground are contour；
The other end of the stay wire displacement sensor is mounted on car top by bolt.
6. elevator traction sheave according to claim 1 slides amount detecting device, which is characterized in that the host computer includes
Receiving unit, image processing unit and computing unit；
The receiving unit is connect with the stay wire displacement sensor and the camera respectively, is passed for receiving the bracing wire displacement
Car position data when car position data and elevator out of service of the elevator of sensor record when bringing into operation and described
All pictures of camera acquisition；
Described image processing unit is connect with the receiving unit, and all pictures for acquiring to the camera carry out at image
Reason obtains the traction sheave label；
The computing unit is connect with the receiving unit and described image processing unit respectively, for being opened according to the elevator
Begin operation when car position data and the car position data when elevator out of service calculate that carriage moves up and down away from
From, and the move distance for calculating traction sheave is marked according to the traction sheave, it is also used to the distance moved up and down according to the carriage
Elevator traction sheave slippage is calculated with the move distance of the traction sheave.
7. a kind of elevator traction sheave applied to any one of claim 1-6 described device slides quantity measuring method, feature exists
In, comprising:
Obtain the initial position picture that camera acquires traction sheave before elevator brings into operation；
Camera acquires traction sheave with fixed frequency of taking pictures continuous during acquisition elevator brings into operation to elevator end of run
Picture；
Image procossing is carried out to the continuous picture, obtains the total degree n1 that traction sheave label occurs；
Image procossing is carried out to last picture of the initial position picture and the continuous picture, obtains the initial bit
The centroid position of the label of traction sheave described in picture and last described picture is set, and calculates institute according to two centroid positions
State actual range L3 of the traction sheave label relative to initial position；
The total degree n1, interval k1 and the traction sheave that are occurred according to traction sheave label mark the reality relative to initial position
Border distance L3 calculates the move distance L2 of traction sheave using formula L2=n1*k1+L3；The interval k1 is the adjacent traction
The distance between wheel label；
When obtaining car position data b1 and elevator out of service of the elevator of stay wire displacement sensor record when bringing into operation
Car position data b2；
Car position data when car position data b1 and the elevator out of service when being brought into operation according to the elevator
The move distance L2 of b2 and the traction sheave, utilize formula L=| b2-b1-L2 | calculate elevator traction sheave slippage L.
8. elevator traction sheave according to claim 7 slides quantity measuring method, which is characterized in that the acquisition elevator starts
Camera is specifically included during running to elevator end of run with fixing the continuous picture that frequency of taking pictures acquires traction sheave:
According to the speed of service v of elevator and the interval k1, taken pictures frequently using the fixation that the camera is arranged in formula f=v/k1
Rate；The moving displacement of traction sheave is less than or equal to the absolute visual field height of the camera in individual photo opporunity of the camera；Institute
Stating fixed frequency of taking pictures is that all traction sheaves can be made to mark the frequency all photographed, the camera in running process of elevator
The traction sheave label is at most shown in the every picture obtained；
Camera takes pictures what frequency acquired traction sheave with the fixation during acquisition elevator brings into operation to elevator end of run
Continuous picture.
9. elevator traction sheave according to claim 7 slides quantity measuring method, which is characterized in that described to the sequential chart
Piece carries out image procossing, obtains the total degree n1 that traction sheave label occurs, specifically includes:
According to the size of traction sheave label, threshold value T is set；The area that the threshold value T is less than traction sheave label is big
It is small, and the threshold value T is at least the 1/3 of the size of the traction sheave label；
After successively carrying out gray processing, binary conversion treatment to every picture, then connection region is constructed, determines maximum connection region area
S；The continuous picture includes plurality of pictures；
If maximum connection region area S is greater than threshold value T, records the traction sheave label and occur once；If maximum connection region
Area S is less than threshold value T, then records the traction sheave label and occur 0 time；
The number occurred to traction sheave label sums up, and the total degree n1 that the traction sheave label occurs is calculated.
10. elevator traction sheave according to claim 7 slides quantity measuring method, which is characterized in that described to described initial
Last picture of position picture and the continuous picture carry out image procossing, obtain the initial position picture and it is described most
The centroid position of the label of traction sheave described in latter picture, and calculate the traction sheave according to two centroid positions and mark phase
For the actual range L3 of initial position, specifically include:
Gray processing, binary conversion treatment are carried out to last picture of the initial position picture and the continuous picture respectively
Afterwards, then connection region is constructed, retains maximum connection region；
According to each maximum connection region, the mass center position of the corresponding traction sheave label of the initial position picture is calculated
Set the centroid position of the traction sheave label corresponding with last picture of the continuous picture；
According between two centroid positions vertical pixel number and pixel equivalent calculate traction sheave label relative to
The actual range L3 of initial position.
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