CN102661952A - Image-based steel wire rope breakage detection device - Google Patents
Image-based steel wire rope breakage detection device Download PDFInfo
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- CN102661952A CN102661952A CN2012101312158A CN201210131215A CN102661952A CN 102661952 A CN102661952 A CN 102661952A CN 2012101312158 A CN2012101312158 A CN 2012101312158A CN 201210131215 A CN201210131215 A CN 201210131215A CN 102661952 A CN102661952 A CN 102661952A
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Abstract
The invention discloses an image-based steel wire rope breakage detection device, which comprises a backlight plate, a camera and an illuminating lamp and also comprises a controller used for performing centralized control, wherein the backlight plate is arranged on the back face of a steel wire rope; the backlight plate is light in color; the camera and the illuminating lamp are arranged in front of the steel wire rope; and the controller is connected with the camera and the illuminating lamp. The controller is provided with a digital signal processor, a video decoder, a human-computer interface, a program storage, a data storage and a communication module, wherein the digital signal processor is used for performing image processing; the video decoder is used for receiving a video code output from the camera; the human-computer interface is used for parameter setting and information displaying; the program storage is used for storing programs; the data storage is used for storing data; and the communication module is used for outputting faults. The communication module not only can be set as a wired communication module but also can be set as a wireless communication module. A breakage detection algorithm is set in the program storage.
Description
Technical field
The present invention relates to a kind of Detecting broken wires in steel rope device, belong to the special equipment technical field based on image.
Background technology
In special equipment trade, such as elevator industry, through regular meeting the wire rope damage takes place and cause equipment failure, even jeopardize personnel's life security.Why wire rope becomes the major hazard source that accident takes place frequently, and is to be difficult to take precautions against because defectives such as wire rope fatigue, fracture of wire, wearing and tearing, corrosion are difficult to measure.The driving force of elevator is to lean on the friction force between wire rope and the traction race to drive, and wire rope exists unidirectional or alternating bending around traction sheave, angle sheave in the running, in grooving, is also bearing higher extrusion stress; Simultaneously; Have friction force between two metal parts, two parts of phase mutual friction must produce wearing and tearing, and the wear phenomenon highly significant; And wire rope frequently bears startup, the braking of elevator and impacts, and is the more serious parts of loss ratio in the elevator.In addition, under the high situation of high humidity, environment temperature, the corrosion of wire rope also can not be ignored.Beyond normal wear, also exist undesired use to cause steel rope fault, disconnected thigh.
In a single day wire rope puts into operation and just " has bred " unsafe factor, and fracture of wire, disconnected thigh will be so that disconnected rope will directly cause casualties, and therefore, force urges is to dynamic, the continuous monitoring of wire rope operation greatly.
Summary of the invention
The objective of the invention is in order to provide a kind of imageing sensor to detect the real-time monitoring mode of wire rope fault, non-contact detection does not influence the wire rope operate as normal, has advantage automatic, continuous firing.
The technical solution adopted for the present invention to solve the technical problems is:
Detecting broken wires in steel rope device based on image; Comprise the backlight that is arranged on the wire rope back side; Described backlight is set to light color; Be arranged on the video camera and the illuminating lamp of described wire rope front, also comprise and carry out central controlled controller, described controller is connected with illuminating lamp with described video camera.
The digital signal processor of Flame Image Process is carried out in described controller setting; Receive the Video Decoder of the video coding of described video camera output; Carry out the man-machine interface that parameter setting and information show; Carry out the program storage of procedure stores, carry out the data-carrier store of data storage, and the communication module that carries out fault output.
Described communication module is set to the wire communication module.
Described communication module is set to wireless communication module.
Described program storage set inside fracture of wire detection algorithm, described fracture of wire detection algorithm may further comprise the steps:
(1), every described digital signal processor is opened described illuminating lamp at a distance from fixed cycle T, through described Video Decoder, gathers the view data of described video camera output
F t ={ P Ij (t) } M*n , described view data
F t Be two-dimensional matrix, the view data of last time gathering does
F T-1 ={ P Ij (t-1) } M*n , parameter
mBe the pixel wide of view data, parameter
nPixels tall for view data;
(2), with the view data of current collection
F t With the view data of last time gathering
F T-1 Carry out difference processing, ask for the image change of described wire rope, differential data
E t =| P Ij (t)-P Ij (t-1) | } M*n , described differential data
E t Be two-dimensional matrix;
(3), calculate differential data
E t Mould, promptly ||
E t ||=(∑
| P Ij (t)-P Ij (t-1) | 2 )
1/2,
i=1
m,
j=1
n, when ||
E t ||>
MThe time, then judge described wire rope generation fracture of wire or abnormal conditions, described controller is reported to the police through described communication module, described constant
MBe preset empirical value; Otherwise returning step (1) continues to carry out.
The good effect of embodiment of the present invention is: 1, touchless detection scheme, do not have influence to wire rope; 2, capable of automatic alarm, realize continuing no worker monitor.
Description of drawings
Fig. 1 is this Unit Installation synoptic diagram;
Fig. 2 is the theory diagram of controller;
Fig. 3 is the image detection synoptic diagram.
Embodiment
Combine accompanying drawing that the present invention is described further at present:
With reference to Fig. 1-3; Detecting broken wires in steel rope device based on image; Comprise the backlight 4 that is arranged on wire rope 2 back sides, described backlight 4 is set to light color, is arranged on the video camera 1 and illuminating lamp 3 of described wire rope 2 fronts; Comprise also and carry out central controlled controller that described controller is connected with illuminating lamp 3 with described video camera 1.
Such set-up mode can let described wire rope 2 very clearly be imaged on 1 li in described video camera, under the bad situation of ambient lighting, opens described illuminating lamp 3 and can obtain satisfied imaging effect.
The digital signal processor 6 of Flame Image Process is carried out in described controller setting; Receive the Video Decoder 5 of the video coding of described video camera 1 output; Carry out the man-machine interface 7 that parameter setting and information show; Carry out the program storage 8 of procedure stores, carry out the data-carrier store 9 of data storage, and the communication module 10 that carries out fault output.Described Video Decoder 5 receives after the video coding, decodes and is stored in the described data-carrier store 9; Described program storage 8 set inside fracture of wire detection algorithms supply described digital signal processor 6 to extract instruction, and the view data in the described data-carrier store 9 is handled.
Described man-machine interface 7 can be provided with the LCD display that shows usefulness, the keyboard or the touch screen of information input.
Described communication module 10 is in order to send fault-signal to remote terminal, Query Information or the command information also can the receiving remote terminal sent.Described communication module 10 can be set to the wire communication module, also can be set to wireless communication module.
Described fracture of wire detection algorithm may further comprise the steps:
(1), every described digital signal processor 6 is opened described illuminating lamp 3 at a distance from fixed cycle T, through described Video Decoder 5, gathers the view data of described video camera 1 output
F t ={ P Ij (t) } M*n , described view data
F t Be two-dimensional matrix, the view data of last time gathering does
F T-1 ={ P Ij (t-1) } M*n , parameter
mBe the pixel wide of view data, parameter
nPixels tall for view data;
(2), with the view data of current collection
F t With the view data of last time gathering
F T-1 Carry out difference processing, ask for the image change of described wire rope, differential data
E t =| P Ij (t)-P Ij (t-1) | } M*n , described differential data
E t Be two-dimensional matrix;
(3), calculate differential data
E t Mould, promptly ||
E t ||=(∑
| P Ij (t)-P Ij (t-1) | 2 )
1/2,
i=1
m,
j=1
n, when ||
E t ||>
MThe time, judge that then fracture of wire or abnormal conditions take place described wire rope 2, described controller is reported to the police through described communication module 10, and described constant M is preset empirical value; Otherwise returning step (1) continues to carry out.
In sum, the invention provides the real-time monitoring mode that a kind of imageing sensor detects the wire rope fault, image can obtain abundant information data; Help the reliable detection fault; And be non-contact detection, do not influence the wire rope operate as normal, have advantage automatic, continuous firing.
Claims (5)
1. based on the Detecting broken wires in steel rope device of image; It is characterized in that: comprise the backlight that is arranged on the wire rope back side; Described backlight is set to light color; Be arranged on the video camera and the illuminating lamp of described wire rope front, also comprise and carry out central controlled controller, described controller is connected with illuminating lamp with described video camera.
2. the Detecting broken wires in steel rope device based on image according to claim 1; It is characterized in that: the digital signal processor of Flame Image Process is carried out in described controller setting; Receive the Video Decoder of the video coding of described video camera output, carry out the man-machine interface that parameter setting and information show, carry out the program storage of procedure stores; Carry out the data-carrier store of data storage, and the communication module that carries out fault output.
3. the Detecting broken wires in steel rope device based on image according to claim 2, it is characterized in that: described communication module is set to the wire communication module.
4. the Detecting broken wires in steel rope device based on image according to claim 2, it is characterized in that: described communication module is set to wireless communication module.
5. according to claim 1,2 described Detecting broken wires in steel rope devices, it is characterized in that based on image: described program storage set inside fracture of wire detection algorithm, described fracture of wire detection algorithm may further comprise the steps:
(1), every described digital signal processor is opened described illuminating lamp at a distance from fixed cycle T, through described Video Decoder, gathers the view data of described video camera output
F t ={ P Ij (t) } M*n , described view data
F t Be two-dimensional matrix, the view data of last time gathering does
F T-1 ={ P Ij (t-1) } M*n , parameter
mBe the pixel wide of view data, parameter
nPixels tall for view data;
(2), with the view data of current collection
F t With the view data of last time gathering
F T-1 Carry out difference processing, ask for the image change of described wire rope, differential data
E t =| P Ij (t)-P Ij (t-1) | } M*n , described differential data
E t Be two-dimensional matrix;
(3), calculate differential data
E t Mould, promptly ||
E t ||=(∑
| P Ij (t)-P Ij (t-1) | 2 )
1/2,
i=1
m,
j=1
n, when ||
E t ||>
MThe time, then judge described wire rope generation fracture of wire or abnormal conditions, described controller is reported to the police through described communication module, described constant
MBe preset empirical value; Otherwise returning step (1) continues to carry out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101312158A CN102661952A (en) | 2012-05-02 | 2012-05-02 | Image-based steel wire rope breakage detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101312158A CN102661952A (en) | 2012-05-02 | 2012-05-02 | Image-based steel wire rope breakage detection device |
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| CN102661952A true CN102661952A (en) | 2012-09-12 |
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| CN2012101312158A Pending CN102661952A (en) | 2012-05-02 | 2012-05-02 | Image-based steel wire rope breakage detection device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010887A (en) * | 2012-12-12 | 2013-04-03 | 浙江中博智能技术有限公司 | Analysis method and analysis system for monitoring video of elevator running cable |
| CN103954558A (en) * | 2014-05-22 | 2014-07-30 | 西南石油大学 | Tensioning wheel wire rope crawler |
| CN104063716A (en) * | 2014-07-01 | 2014-09-24 | 重庆迈高电梯有限公司 | Method for detecting breaking strand or wire of wire rope |
| CN104535356A (en) * | 2015-01-19 | 2015-04-22 | 中南大学 | Method and system for monitoring rope arrangement faults of drum steel wire rope on basis of machine vision |
| CN104515777B (en) * | 2015-01-14 | 2017-03-08 | 兖州煤业股份有限公司 | The strong magnetic image joint online nondestructive inspection system of steel wire rope and method |
| EP3323765A1 (en) * | 2016-11-22 | 2018-05-23 | Manitowoc Crane Companies, LLC | Optical detection and analysis of crane hoist and rope |
| US10544012B2 (en) | 2016-01-29 | 2020-01-28 | Manitowoc Crane Companies, Llc | Visual outrigger monitoring system |
| CN111901559A (en) * | 2020-07-08 | 2020-11-06 | 胡飞青 | System and method for recognizing breaking state of protective rope body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010887A (en) * | 2012-12-12 | 2013-04-03 | 浙江中博智能技术有限公司 | Analysis method and analysis system for monitoring video of elevator running cable |
| CN103010887B (en) * | 2012-12-12 | 2015-05-20 | 浙江中博智能技术有限公司 | Analysis method and analysis system for monitoring video of elevator running cable |
| CN103954558A (en) * | 2014-05-22 | 2014-07-30 | 西南石油大学 | Tensioning wheel wire rope crawler |
| CN104063716A (en) * | 2014-07-01 | 2014-09-24 | 重庆迈高电梯有限公司 | Method for detecting breaking strand or wire of wire rope |
| CN104515777B (en) * | 2015-01-14 | 2017-03-08 | 兖州煤业股份有限公司 | The strong magnetic image joint online nondestructive inspection system of steel wire rope and method |
| CN104535356A (en) * | 2015-01-19 | 2015-04-22 | 中南大学 | Method and system for monitoring rope arrangement faults of drum steel wire rope on basis of machine vision |
| CN104535356B (en) * | 2015-01-19 | 2017-08-29 | 中南大学 | A kind of roller steel wire rope rope fault monitoring method and system based on machine vision |
| US10544012B2 (en) | 2016-01-29 | 2020-01-28 | Manitowoc Crane Companies, Llc | Visual outrigger monitoring system |
| EP3323765A1 (en) * | 2016-11-22 | 2018-05-23 | Manitowoc Crane Companies, LLC | Optical detection and analysis of crane hoist and rope |
| US10717631B2 (en) | 2016-11-22 | 2020-07-21 | Manitowoc Crane Companies, Llc | Optical detection and analysis of crane hoist and rope |
| US10829347B2 (en) | 2016-11-22 | 2020-11-10 | Manitowoc Crane Companies, Llc | Optical detection system for lift crane |
| US11124392B2 (en) | 2016-11-22 | 2021-09-21 | Manitowoc Crane Companies, Llc | Optical detection and analysis for boom angles on a crane |
| US11130658B2 (en) | 2016-11-22 | 2021-09-28 | Manitowoc Crane Companies, Llc | Optical detection and analysis of a counterweight assembly on a crane |
| CN111901559A (en) * | 2020-07-08 | 2020-11-06 | 胡飞青 | System and method for recognizing breaking state of protective rope body |
| CN111901559B (en) * | 2020-07-08 | 2021-06-01 | 南京幸庄科技创新产业园管理有限公司 | System and method for recognizing breaking state of protective rope body |
| WO2022007127A1 (en) * | 2020-07-08 | 2022-01-13 | 胡飞青 | System and method for identifying fracture state of protective rope body |
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Application publication date: 20120912 |