CN104390988A - Multi-view whole-surface detecting device aiming at overcoming characteristics of high curvature and strong reflection of train wheels - Google Patents
Multi-view whole-surface detecting device aiming at overcoming characteristics of high curvature and strong reflection of train wheels Download PDFInfo
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- CN104390988A CN104390988A CN201410711796.1A CN201410711796A CN104390988A CN 104390988 A CN104390988 A CN 104390988A CN 201410711796 A CN201410711796 A CN 201410711796A CN 104390988 A CN104390988 A CN 104390988A
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Abstract
The invention provides a multi-view whole-surface detecting device aiming at overcoming the characteristics of high curvature and strong reflection of train wheels. The multi-view whole-surface detecting device disclosed by the invention has the advantages that uniform lighting can be carried out on the surfaces of the train wheels, so that the problem of strong reflection of the surfaces of the wheels is solved and acquired images are clear and reliable; by adoption of a large-scene-depth industrial camera, the characteristic of change of high curvature of the surfaces of the wheels is overcome; the camera can be used for acquiring whole-surface images of the wheels by virtue of a camera rotating device; high-speed parallel transmission of the acquired images is realized by building a kilomega-network transmission system; and the images are detected, processed and displayed in real time by an industrial control computer, so that full automation and intelligentization of the detection are realized, the labor cost is reduced and the production efficiency is improved. By adoption of the multi-view whole-surface detecting device, the defects of a traditional detection method are overcome, the detection accuracy is improved and the quality of a product is improved.
Description
Technical field
The invention belongs to the full surface defects detection technical field of train wheel, particularly relate to a kind of full surface detection apparatus of many orders for train wheel higher curvature strong reflection characteristic.
Background technology
Motor-car, high ferro, the high speed development of the industries such as subway, proposes strict requirement to the production quality of train wheel, and the train wheel of high-quality is train safe operation and the important leverage ensureing the security of the lives and property.The train wheel of current China detects main or relies on naked eyes to detect, and work load is large, and accuracy of detection is low, and cost is higher.
For problems, done many research both at home and abroad, as magnetic powder inspection, UT (Ultrasonic Testing), Machine Vision Detection etc. are suggested application in succession.Utilize magnetic powder inspection to there is exciting current large, security is low, and needs to demagnetize to workpiece, cleaning supervisor, and the result of magnetic powder inspection simultaneously still needs manpower intervention to judge, just there is the problems such as undetected, erroneous judgement.Ultrasound examination also also exists material microstructure scattering phenomenon, causes undesired signal close with flaw indication frequency, cannot carry out defect estimation.Machine vision carries out defects detection relative to other several detection method for train wheel, efficiency is high, cost is low, but present stage is mainly detected for the tread of train wheel based on the detection system of machine vision technique, and not for the automatic detection device on the full surface of train wheel, main cause is difficult to overcome the strong reflection of metal surface and train wheel surface portion region curvature is large, the depth of field change characteristic such as greatly.
Summary of the invention
For the deficiencies in the prior art, the technical problem to be solved in the present invention is, a kind of full surface detection apparatus of many orders for train wheel surface higher curvature strong reflection characteristic is provided, this device realizes the complete surperficial image acquisition of train wheel and defects detection in conjunction with Machine Design, light path design, collected by camera system and computer system, the defect of traditional detection method can be overcome, improve detection efficiency and accuracy of detection.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of full surface detection apparatus of many orders for train wheel higher curvature strong reflection characteristic, comprise lamp according to case, lamp bar, large depth of field industrial camera, focus industrial camera, universal stage, high reflectance high temperature film, camera runing rest, kilomega network mouth switch and industrial computer, described lamp bar, large depth of field industrial camera, focusing industrial camera, universal stage, high reflectance high temperature film and camera runing rest, to be all arranged at lamp inner according to case; Described universal stage is positioned at the center of lamp according to case; Described high reflectance high temperature film is arranged at lamp according on box top and four sidewalls; Described lamp bar is arranged at lamp according on the sidewall of case, and this lamp bar polishing direction is vertically upward; Described large depth of field industrial camera is arranged at above universal stage, is connected with lamp by camera runing rest according to box top; The described industrial camera that focuses is arranged at universal stage side, is connected according to case sidewall with lamp; Described kilomega network mouth switch is by netting twine and large depth of field industrial camera and focus industrial camera and be connected; Described industrial computer is connected with kilomega network mouth switch.
Described lamp bar every meter adopts 72 pearl high-brightness LED lamps in parallel.
Described large depth of field industrial camera is provided with 3.
Owing to adopting technique scheme, the beneficial effect that the present invention has is: (1) is for the large characteristic of train wheel Curvature varying, the light sent by high-brightness LED lamp pearl carries out repeatedly diffuse reflection at lamp according to the wheel surface in case sidewall high reflectance high temperature film and on universal stage, thus make train wheel entirely show uniform illumination, facilitate the image acquisition in later stage.Solve and use common light source to carry out polishing to train wheel surface, make polishing uneven, the image light and shade difference causing collected by camera obviously, cannot carry out the problem of effective image procossing; (2) in order to make limited camera carry out image acquisition to the full surface of wheel, need rotation of wheel be made, being rotated by universal stage coiling central shaft, make camera can complete the collection of the image to full surface; (3) large for train wheel surface curvature change, adopt common industrial camera to carry out image acquisition, because the depth of field of industrial camera is less, the image of image outside the depth of field collected can be made to occur fuzzy, cannot process.Therefore the present invention is to train wheel disc, and the detection of aperture surface and outer diameter face adopts large depth of field camera to gather it, and adopts tread portions and common focus industrial camera collection; (4) in order to make the image collected can carry out processes and displays in real time, the present invention adopts gigabit network interface camera to carry out image transmitting, in order to improve the processing speed of image further, the design of Speed Parallel Processing is realized by Giganet switches, realize the high-speed transfer to gathering image, and realize process in real time by upper industrial computer.
Therefore, present invention employs non-contact type detection mode; Overcome the characteristic of train wheel surface higher curvature strong reflection, realize the detection to the full surface of train wheel; Gigabit network interface camera is adopted to improve the transmission speed of image; By the real-time check processing of image, achieve full-automatic detection, liberation labour, improve accuracy of detection, reduce production cost, increase the performance of enterprises.
Accompanying drawing explanation
Below by with reference to accompanying drawing describe the present invention particularly in conjunction with example, advantage of the present invention and implementation will be more obvious, wherein content shown in accompanying drawing is only for explanation of the present invention, and does not form restriction of going up in all senses of the present invention, in the accompanying drawings:
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is that lamp of the present invention is according to case front view;
Fig. 3 is partial structurtes sectional view of the present invention;
In figure:
1, lamp is according to case 2, lamp bar 3, large depth of field industrial camera
4, industrial camera 5, wheel 6, universal stage is focused
7, high reflectance high temperature film 8, camera runing rest 9, kilomega network mouth switch
10, industrial computer 3A, the industry of the first depth of field 3B, second largest depth of field industrial camera camera
3C, the third-largest depth of field industrial camera
Embodiment
The present invention is described further below in conjunction with embodiment and accompanying drawing thereof:
As shown in Figure 1 to Figure 3, a kind of full surface detection apparatus of many orders for train wheel higher curvature strong reflection characteristic of the present invention, comprise lamp according to case 1, lamp bar 2, large depth of field industrial camera 3, focus industrial camera 4, universal stage 6, high reflectance high temperature film 7, camera runing rest 8, kilomega network mouth switch 9 and industrial computer 10, described lamp bar 2, large depth of field industrial camera 3, focusing industrial camera 4, universal stage 6, high reflectance high temperature film 7 and camera runing rest 8, to be all arranged at lamp inner according to case 1; Described universal stage 6 is positioned at the center of lamp according to case 1; Described high reflectance high temperature film 7 is arranged at lamp according on case 1 top and four sidewalls; Described lamp bar 2 is arranged at lamp according on the sidewall of case 1, and this lamp bar 2 polishing direction is vertically upward; Described large depth of field industrial camera 3 is arranged at above universal stage 6, is connected with lamp by camera runing rest 8 according to case 1 top; The described industrial camera 4 that focuses is arranged at universal stage 6 side, is connected according to case 1 sidewall with lamp; Described kilomega network mouth switch 9 is by netting twine and large depth of field industrial camera 3 and focus industrial camera 4 and be connected; Described industrial computer 10 is connected with kilomega network mouth switch 9; Described lamp bar 2 every meter of employing 72 pearl high-brightness LED lamps are in parallel; Described large depth of field industrial camera 3 is provided with 3.
The course of work of this example is: as shown in Figure 1, wheel 5 is positioned on universal stage 6,90 ° described, high-brightness LED lamp bar 2 lamp pearl is irradiated upward, light is made fully to carry out diffuse reflection at lamp according to the high reverse--bias film 7 on case wall and wheel 5 surface, thus the even polishing realized wheel 5 surface, every rice lamp bar 2 has 72 pearl high-brightness LED lamps; Rotated by servomotor driven rotary platform 6, the coarse positioning of wheel 5 can select centre scale chi, realizes the collection of camera to the full surface image of train wheel 5; Camera runing rest 8 realizes fixing large depth of field industrial camera 3, simultaneously for regulating the angle of large depth of field industrial camera 3, makes detection system be applicable to multiple dimensioned train wheel; Kilomega network mouth switch 9 focuses industrial camera by netting twine with 3 large depth of field industrial cameras and 1 and is connected, and realizes the high-speed parallel transmission of image; Industrial computer 10, for processing the image gathered, comprises the detection of defect, location, demarcation, display, warning etc.; The detection of the pros and cons of wheel can be realized by upset wheel.
Three large depth of field cameras 3 distribute as shown in Figure 2, and first depth of field industrial camera 3A detects for the aperture surface of wheel 5, wheel hub surface; Second largest depth of field industrial camera 3B detects for the web area of wheel 5, and the third-largest depth of field industrial camera 3C detects the outer diameter face of wheel 5, wheel rim face; Focus industrial camera 4 and be distributed in wheel face, realize the detection to wheel tread.
As shown in Figure 3, the aperture surface of wheel 5 is larger with the Curvature varying of outer diameter face, and greatly, the front of wheel 5 is not identical with the curvature of reverse side simultaneously in the namely sampling depth change of image, for adapting to the change of multi-curvature, so the detection adopting large depth of field industrial camera 3 to realize polytypic wheel.
Although invention has been described by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; when not departing from present inventive concept, can also make a lot of distortion, these all belong within protection of the present invention.
Claims (3)
1. the full surface detection apparatus of many orders for train wheel higher curvature strong reflection characteristic, it is characterized in that: comprise lamp according to case, lamp bar, large depth of field industrial camera, focuses industrial camera, universal stage, high reflectance high temperature film, camera runing rest, kilomega network mouth switch and industrial computer, described lamp bar, large depth of field industrial camera, focusing industrial camera, universal stage, high reflectance high temperature film and camera runing rest, to be all arranged at lamp inner according to case; Described universal stage is positioned at the center of lamp according to case; Described high reflectance high temperature film is arranged at lamp according on box top and four sidewalls; Described lamp bar is arranged at lamp according on the sidewall of case, and this lamp bar polishing direction is vertically upward; Described large depth of field industrial camera is arranged at above universal stage, is connected with lamp by camera runing rest according to box top; The described industrial camera that focuses is arranged at universal stage side, is connected according to case sidewall with lamp; Described kilomega network mouth switch is by netting twine and large depth of field industrial camera and focus industrial camera and be connected; Described industrial computer is connected with kilomega network mouth switch.
2. the full surface detection apparatus of many orders for train wheel higher curvature strong reflection characteristic according to claim 1, is characterized in that: described lamp bar every meter adopts 72 pearl high-brightness LED lamps in parallel.
3. the full surface detection apparatus of many orders for train wheel higher curvature strong reflection characteristic according to claim 1, is characterized in that: described large depth of field industrial camera is provided with 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711796.1A CN104390988A (en) | 2014-11-28 | 2014-11-28 | Multi-view whole-surface detecting device aiming at overcoming characteristics of high curvature and strong reflection of train wheels |
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| CN201410711796.1A CN104390988A (en) | 2014-11-28 | 2014-11-28 | Multi-view whole-surface detecting device aiming at overcoming characteristics of high curvature and strong reflection of train wheels |
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| CN104390988A true CN104390988A (en) | 2015-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199766A (en) * | 2021-11-30 | 2022-03-18 | 联想(北京)有限公司 | Surface defect detection device and detection method |
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| CN114199766A (en) * | 2021-11-30 | 2022-03-18 | 联想(北京)有限公司 | Surface defect detection device and detection method |
| CN114199766B (en) * | 2021-11-30 | 2024-03-22 | 联想(北京)有限公司 | Surface defect detection device and detection method |
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Application publication date: 20150304 |