CN107976454A - A kind of plastic pipe surface defect detection apparatus and its detection method - Google Patents
A kind of plastic pipe surface defect detection apparatus and its detection method Download PDFInfo
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- CN107976454A CN107976454A CN201711136238.7A CN201711136238A CN107976454A CN 107976454 A CN107976454 A CN 107976454A CN 201711136238 A CN201711136238 A CN 201711136238A CN 107976454 A CN107976454 A CN 107976454A
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- camera
- personal computer
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- plastic pipe
- encoder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/952—Inspecting the exterior surface of cylindrical bodies or wires
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8835—Adjustable illumination, e.g. software adjustable screen
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The present invention provides a kind of plastic pipe surface defect detection apparatus and its detection method, the plastic tube is entered inside the detection device by the center hole of the detachable silica gel plate, the data obtained signal is reflected that into the industrial personal computer industrial personal computer transfers data to the display panel again by the encoder；When encoder mapping data output shows that the plastic tube is movement, the camera and the light source start simultaneously at work at this time, the camera shoots the plastics pipeline section of process paragraph by paragraph, until encoder output the data obtained represents plastic pipe stop motion, all detection finishes so this section of plastic pipe, the defects of using visual detection equipment, can directly detecting tube surfaces of the invention, fully automatic operation equipment, the effective expenditure for reducing manpower financial capacity.
Description
Technical field
Invention is related to intelligent testing technology field, more particularly to a kind of plastic pipe surface defect detection apparatus and its detection
Method.
Background technology
With the development of science and technology, assembly line is widely used in production, and particularly in plastic tube production, profit
The initial injection of plastic pipe is completed with injection molding machine, plastic grain forms plastic pipe by injection moulding process.But in plastic tube
It is general in the injection moulding process of material plastic grain all occur and be mixed into situations such as impurity, plastic grain fusing degree are relatively low etc. causing into
There are various defects in plastic tube surfaces, and What is more may there is also the different degrees of abrasion of tube surfaces.
Plastic pipe surface defect detection apparatus currently on the market mostly for tubing caliber size, tubing rigidity and
The detection of the tubing other side such as hardness, and detection method the defects of to tube surfaces solves method still without preferable, is
The timely tubing for finding to have surface defect in line flow procedure, improves product quality, it is therefore necessary to which design is a kind of
The detection method of the defects of tube surfaces, the defects of solving the problems, such as to lack preferable tube surfaces in assembly line detection method.
In view of drawbacks described above, creator of the present invention obtains the present invention finally by prolonged research and practice.
Patent of invention content
To solve the above problems, the technical solution that patent of the present invention uses is, there is provided a kind of plastic pipe surface quality
On-line measuring device and method, the detection device include a crust of the device, and described device outer casing frontispiece respectively has one with the back side
First circular hole, the dismountable silica gel plate mutually agreed with therewith, the detachable silica gel plate center are provided with first circular hole
The heart has the second circular hole, and second circular hole is used for by being equipped with light source, the dress with fixed plastics pipe, described device enclosure
Put enclosure and be fixed with encoder stent, encoder is housed on the encoder stent, described device enclosure is fixed with
At least one filming apparatus, is equipped with camera on the filming apparatus；
Preferably, described device shell side is equipped with display panel.
Preferably, front and back respectively has an aperture close to four corners position, the aperture is used to connect discharging into for cold air
And output device.
Preferably, the filming apparatus includes a camera pedestal, connection expansion link one end on the camera pedestal is described to stretch
The contracting bar other end is connected with camera fixing support, and camera is provided with the camera fixing support, camera is housed on the camera
Camera lens.
Preferably, the light source be rectangle it is plate-like be fixed on four angles of described device enclosure, plate is oblique
It is upper to cover the plastics pipe surface in 45 degree of placements, transmitting uniform light.
Preferably, the detection method of the plastic tube processing includes the following steps：
Step 1：The plastic tube is entered inside detection device by the center hole of the detachable silica gel plate, at this time
Encoder is started to work, and monitors the motion state of the plastic tube, and gained detection signal is sent in industrial personal computer；
Step 2：The industrial personal computer transfers data to the display panel, shows the movement shape of the plastic tube at this time
State, hereafter encoder work always；
Step 3：The industrial personal computer sends the working signal of the expression plastic tube movement receiving step 1
Afterwards, the industrial personal computer controls the camera and the light source opens work, the camera plastic tube of process is carried out by
Section shooting, and gained view data is sent in the industrial personal computer by communication modes such as network interface work serial ports and is handled, divided
Analysis；
Step 4：The view data that the industrial personal computer sends step 3 is handled and constantly sent to described aobvious
Show panel；
Step 5：The industrial personal computer sends the stop signal of the expression plastic tube stopping receiving step 1
Afterwards, the industrial personal computer controls the camera and the light source to close, and detection device stops detection work.
Preferably, the detection device debugs the camera and the light source before start-up operation, choose corresponding
The light source and the camera.
Preferably, the information real-time display that display panel sends industrial personal computer.
Preferably, the industrial personal computer is connected with an alarm device.
Preferably, the industrial personal computer is by after the working signal that the encoder sends is received while described in control
The work of display panel, the camera and the light source, the enough next stopping of the encoder transmission is received in the industrial personal computer
After signal, the camera and the light source can be stopped, and the display panel display detection stops.
Compared with the prior art the beneficial effects of the present invention are：1st, the detection device is enclosed construction, can be effective
Avoid other extraneous factors from disturbing, lift the stability of testing result；2nd, using special light sources in detection device, and match somebody with somebody
The capture apparatus of set, makes imaging features more notable, stable, image processing efficiency is more accurate with height, result；3rd, examined using the vision
Measurement equipment, the defects of can directly detecting tube surfaces, fully automatic operation, the effective expenditure for reducing manpower financial capacity；4th, detect
Conclusion is sent directly on the display panel, and conclusion is more direct, using simple, effectively improves production efficiency.
Brief description of the drawings
Fig. 1 is the structure diagram of plastic pipe surface defect detection apparatus of the present invention；
Fig. 2 is the side structure schematic diagram of plastic pipe surface defect detection apparatus of the present invention；
Fig. 3 is the internal structure schematic diagram of plastic pipe surface defect detection apparatus of the present invention；
Fig. 4 is the inside positive structure schematic of plastic pipe surface defect detection apparatus of the present invention；
Fig. 5 is the camera base construction schematic diagram of plastic pipe surface defect material surface defect detection apparatus of the present invention；
Fig. 6 is the camera fixing support structure diagram of plastic pipe surface defect detection apparatus of the present invention；
Fig. 7 is the filming apparatus structure diagram of plastic pipe surface defect detection apparatus of the present invention；
Fig. 8 forms schematic diagram for plastic pipe detection method of surface flaw of the present invention；
Embodiment
Below in conjunction with attached drawing, and other technical characteristic above-mentioned to patent of the present invention and advantage are described in more detail.
Embodiment one
The present invention provides a kind of plastic pipe surface defect detection apparatus and its detection method, as shown in Figure 1 and Figure 2, wherein
Plastic pipe detection method of surface flaw is realized based on plastic pipe surface defect detection apparatus, wherein plastic pipe surface
Defect detecting device includes：
Crust of the device 1, described device shell 1 are a hollow cuboid by bending and welding formation, described device
The front of shell 1 and its corresponding surface was last is provided with the first circular hole, first circular hole is used to install what diameter therewith mutually agreed with
There are the second circular hole, the second circular hole of the two corresponding silica gels plate in detachable silica gel plate 2, the center of the detachable silica gel plate 2
Diameter is identical, with one heart and on sustained height, for by with fixed plastics pipe 3 and playing and preventing light, dust etc. from entering
Into crust of the device, the detachable silica gel plate 2 can be replaced according to different tube diameters demand；
The side of described device shell 1 is provided with display panel 4, what the display panel 4 can be detected with real-time display
The image and handling result of the plastic tube 3；
Preferably, the detachable silica gel plate 2 is light tight silica gel plate；
Preferably, the correspondence four edges that front and back is connected on described device shell 1 carry out chamfered；
Preferably, front steel plate has the corresponding back side steel plate of 4 apertures also to have 4 apertures close to four corners position, for even
Connect cold air discharge into and output device, cold air input are used to balance the temperature of internal confined space, avoid firm molding plastic tube
Surface residual temperature causes that the temperature rises such as camera and light source are excessive, hydraulic performance decline, so as to influence the detection of plastic pipe.
Embodiment two
Plastic pipe surface defect detection apparatus as described above and its detection method, the present embodiment are different from part
It is, with reference to shown in Fig. 1, Fig. 3, Fig. 4, wherein plastic tube surface defect detection apparatus includes：
Light source 5, the light source 5 are installed on the inside of described device shell 1, and the light source 5 is rectangle plate-like surface
A certain number of LED lamp beads are installed, the light source 5 is separately mounted on the side of four chamferings, plate 45 ° of placements obliquely, work
Control machine controls its closing, its light area covers all around the plastic tube 3, reduce light beat tube surfaces are reflective and illumination not
Uniform degree；
1 inside upper plate of described device shell is fixed with an encoder stent 6, and the encoder stent 6 is cast by tagger
And it is L-shaped, while being perpendicularly fixed at the top of described device shell 1, another side is connected with encoder 7, the encoder 7 with
The 3 surface surface of plastic tube contact, be provided with the side of the encoder stent 6 directly over the plastic tube 3 to
A few aperture, in the present embodiment, the aperture are four, and the aperture is used to install the encoder 7, for supervising in real time
The precession situation of the plastic tube 3 is controlled, the model of the encoder 7 and mounting hole position are carried out according to the size of the plastic tube 3
Selection；
Preferably, in the bending place of the encoder stent while being provided with two oval apertures, it is possible to achieve compile
The electrodeless adjustment of code device installation site.
Embodiment three
Plastic pipe surface defect detection apparatus as described above and its detection method, the present embodiment are different from part
It is, with reference to shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, wherein plastic pipe surface defect detection apparatus includes：
Filming apparatus, the filming apparatus are installed on the center of each face bloom in the inside of described device shell 1, the shooting
Device includes a camera pedestal 8, and the camera pedestal 8 is a rectangular piece, and its one end is provided with bolt hole 13, the bolt
Hole 13 is used for the fixation of the camera pedestal 8 bolt hole corresponding with the inside of the described device shell 1 upper center of certain one side, makes
The camera pedestal 8 is fixed on some face of the inside of described device shell 1, there is top position among the camera pedestal 8
First through hole 14, first through hole 14 have an opening, extend to the other end, the camera pedestal 8 of vertical openings
The other end is provided with bolt hole 15, and vertical first through hole 14 of the bolt hole 15, through opening, the bolt hole 15 is used
In the openings of sizes for adjusting the first through hole 14, in the present embodiment, the bolt hole 13 and the bolt hole 15 are set respectively
There are two；
First through hole 14 is used to telescopic rod 9 be fixedly mounted, and the telescopic rod 9 is a cylindrical bar；
The other end of the telescopic rod 9 is connected with camera fixing support 10, and the camera fixing support 10 is square for one
Body fritter, as shown in fig. 6, there is the second through hole 17 thereon, the opening of the second through hole 17 extends to one end, and described second passes through
Perforation 17 is installed on one end of the telescopic rod 9, is provided with the one side of the camera fixing support 10 of vertical openings
Bolt hole 16, vertical second through hole 17 of the bolt hole 16 simultaneously run through opening；The branch of parallel second through hole 17
One of frame extends out towards the other end, forms the platelet of a cuboid, bolt hole 18 is provided with the platelet,
Bolt hole 16 described in the present embodiment is provided with two, and the bolt hole 18 is provided with four and position such as Fig. 6；
The bolt hole 18 is used to install camera 11, camera lens 12 is housed on the camera 11, according to the plastic tube 3
Diameter and other factors, adjust the parameter of the camera 11 and the camera lens 12, and by being stretched described in adjusting
The position of the camera fixing support 10 on contracting bar 9, realizes the camera lens 12 and the adjustment of the distance of the plastic tube 3；
Preferably, the filming apparatus is provided with four, four sides up and down of the plastic tube 3 are separately mounted to
To the vertical position pen-hold grip of the approximation of camera lens 12 takes the photograph the plastic tube 3.
Example IV
Plastic pipe surface defect detection apparatus as described above and its detection method, the present embodiment are different from part
It is, with reference to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 7, the detection method of the plastic tube processing includes the following steps：
Step 1：The plastic tube 3 is entered in detection device by the center hole of the detachable light tight silica gel plate 2
Portion, at this time encoder 7 start to work, monitor the motion state of the plastic tube 3, and gained detection signal is sent to the work
In control machine；
Step 2：The industrial personal computer transfers data to the display panel 4, shows the movement of the plastic tube 3 at this time
State, hereafter encoder work always；
Step 3：The industrial personal computer sends the working signal of the expression movement of plastic tube 3 receiving step 1
Afterwards, the industrial personal computer controls the camera 11 and the light source 5 to open work, the plastic tube 3 of the camera 11 to process
Shot paragraph by paragraph, and gained view data is sent in the industrial personal computer by communication modes such as network interface work serial ports and is located
Reason, analysis；
Step 4：The view data that the industrial personal computer sends step 3 is handled and constantly sent to described aobvious
Show panel 4；
Step 5：The industrial personal computer sends the stop signal of the expression stopping of plastic tube 3 receiving step 1
Afterwards, the industrial personal computer, which sends command adapted thereto, closes the camera 11 and the light source 5, and the detection device stops detection work
Make.
Embodiment five
Plastic pipe detection method of surface flaw as described in above-mentioned example IV, what the implementation case was different from is in
In the content of the step 3, i.e., described industrial personal computer sends the letter of the expression movement of plastic tube 3 receiving step 1
After number, the industrial personal computer controls the camera 11 and the light source 5 to open work, the plastic tube of the camera 11 to process
3 are shot paragraph by paragraph, and gained view data is sent in the industrial personal computer by communication modes such as network interface work serial ports and is carried out
Processing, analysis；
Wherein needed before plastic pipe surface defect detection apparatus start-up operation to the camera 11 and described
Camera lens 12 and the light source 5 are debugged, and the light source 5 launches the light being adapted with 3 color of plastic tube, with to the greatest extent
Amount reduces light reflection degree and realizes and the plastic tube 3 is covered all around, and the camera 11 is by adjusting the camera lens
Suitable camera site is found in the position of the camera fixing support 10 on 12 focal length and the adjusting telescopic rod 9, makes it
Imaging clearly, feature of interest is distinct, improves image processing efficiency and precision；
Embodiment six
Plastic pipe detection method of surface flaw as described in above-mentioned example IV, what the present embodiment was different from is in
In the step 4：The signal that the industrial personal computer sends step 3 is sent to display panel；
The signal sent can be handled as follows in wherein described industrial personal computer：
If 3 surface of plastic tube stands intact, then the display panel 4 will display data " 0 ", represent the modeling
3 surface of expects pipe does not have any quality problems；
If there is cut in 3 surface of plastic tube, then gathers corresponding image, the phase by the camera 11 at this time
Respective image is transferred in the industrial personal computer by machine 11 by communication modes such as network interfaces or serial ports, and the industrial personal computer is to respective image
Corresponding calculating processing is made, draws the size and number of the 3 surface scratch area of plastic tube, it is at the same time, described aobvious
Show panel 4 above will display data " 2 " and scored area digital-to-analogue, the size in each region, expression detects at this time
The plastic tube 3 there is surface scratch and its number and size；
, at this time should by the camera 11 shooting capture if being stained and (being mingled with other debris) occur in 3 surface of plastic tube
Defect image, the camera 11 are transferred data in the industrial personal computer by communication modes such as network interface or serial ports, the industry control
Machine makes the image corresponding processing and analysis, draws the number that 3 surface of plastic tube is stained the size of area and is stained
Mesh, at the same time, above display panel will display data " 3 " and insult area digital-to-analogue, the size in each region, table
Show that the size in the region that surface is stained and each region occurs in the plastic tube 3 detected at this time；
If there is situation about splitting on 3 surface of plastic tube, defect image obtained by capturing is shot as the camera 11 at this time,
The camera 11 by the communication modes such as network interface or serial ports by image transmitting into the industrial personal computer, the industrial personal computer does image
Go out corresponding data processing, draw the size to split on 3 surface of plastic tube and number of splitting, data will be aobvious at this time
Show and shown on panel " 4 " and cleavable region quantity, the size in each region, represent the plastic tube that detects at this time
There is the size in the region split and each region in 3 surfaces.Preferably, since drawbacks described above situation is in actually detected process
In can occur at the same time, therefore the display panel 4 arranges the data obtained information in order；Such as detect that plastic pipe occurs 3
It is respectively 7,8,9 square millimeters to locate scratch area size；Split at 4, size is respectively 11,12,18,32 square millimeters.
Display panel will be shown
' 2 ', 3----7,8,9
' 4 ', 4----11,12,18,32
Embodiment seven
Plastic pipe detection method of surface flaw as described above, the present embodiment are different from part and are, the work
Control machine is also associated with an alarm device, and the alarm device will break down in the detection device, or the plastic tube 3 blocks
Firmly wait some to be controlled by the industrial personal computer in special circumstances to trigger.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, on the premise of the method for the present invention is not departed from, can also make some improvement and supplement, these are improved and supplement also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of plastic pipe surface defect detection apparatus, it is characterised in that the detection device includes a crust of the device, described
Respectively there is first circular hole in crust of the device front with the back side, and the detachable silica gel mutually agreed with therewith is provided with first circular hole
There are the second circular hole in plate, the detachable silica gel plate center, second circular hole be used for by with fixed plastics pipe, described device
Enclosure is equipped with light source, and described device enclosure is fixed with encoder stent, encoder is housed on the encoder stent,
Described device enclosure is fixed with least one filming apparatus, and camera is housed on the filming apparatus.
2. plastic pipe surface defect detection apparatus according to claim 1, it is characterised in that described device shell side
Equipped with display panel.
3. plastic pipe surface defect detection apparatus according to claim 1, it is characterised in that front and back is close to four
Respectively there is an aperture in angular position, the aperture be used to connecting cold air discharge into and output device.
4. plastic pipe surface defect detection apparatus according to claim 1, it is characterised in that the filming apparatus includes
One camera pedestal, connection expansion link one end on the camera pedestal, the telescopic rod other end are connected with camera fixing support, institute
State and the camera is installed on camera fixing support, camera lens are housed on the camera.
5. plastic pipe surface defect detection apparatus according to claim 1, it is characterised in that the light source is rectangle
It is plate-like, it is fixed on four angles of described device enclosure, plate 45 degree of placements obliquely, described in transmitting uniform light covering
Plastics pipe surface.
A kind of 6. method for implementing the plastic pipe surface defect detection apparatus described in claim 2, it is characterised in that the modeling
Expects pipe material detection method of surface flaw includes the following steps：
Step 1：The plastic tube is entered inside detection device by the center hole of the detachable silica gel plate, described at this time
Encoder is started to work, and monitors the motion state of the plastic tube, and gained detection signal is sent in industrial personal computer；
Step 2：The industrial personal computer transfers data to the display panel, shows the motion state of the plastic tube at this time, this
The encoder works always afterwards；
Step 3：The industrial personal computer is after receiving step 1 and sending the working signal for representing the plastic tube movement, institute
Stating industrial personal computer controls the camera and the light source to open work, and the camera claps the plastic tube of process paragraph by paragraph
Take the photograph, and gained view data is sent in the industrial personal computer by communication modes such as network interface work serial ports and is handled, analyzed；
Step 4：The view data that the industrial personal computer sends step 3 is handled and constantly sent to the display surface
Plate；
Step 5：The industrial personal computer is after receiving step 1 and sending the signal for representing the plastic tube stopping, the work
Control machine, which sends command adapted thereto, closes camera and the light source, and the detection device stops detection work.
7. plastic pipe detection method of surface flaw according to claim 6, it is characterised in that the detection device starts
The camera and the light source are debugged before work, choose the corresponding light source and the camera.
8. plastic pipe detection method of surface flaw according to claim 6, it is characterised in that the display panel is by institute
State the information real-time display that industrial personal computer is sent.
9. plastic pipe detection method of surface flaw according to claim 6, it is characterised in that the industrial personal computer is connected with
One alarm device.
10. plastic pipe detection method of surface flaw according to claim 6, it is characterised in that the industrial personal computer will be
Receive after the working signal that the encoder is sent while control the display panel, the camera and the light source
Work, after the stop signal that the industrial personal computer receives that the encoder transmission enough comes, the camera and the light source stop
Work, the display panel display detection stop.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136238.7A CN107976454A (en) | 2017-11-16 | 2017-11-16 | A kind of plastic pipe surface defect detection apparatus and its detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136238.7A CN107976454A (en) | 2017-11-16 | 2017-11-16 | A kind of plastic pipe surface defect detection apparatus and its detection method |
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| CN201711136238.7A Pending CN107976454A (en) | 2017-11-16 | 2017-11-16 | A kind of plastic pipe surface defect detection apparatus and its detection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760765A (en) * | 2018-05-24 | 2018-11-06 | 武汉精测电子集团股份有限公司 | A kind of surface damage defect detecting device and method based on the shooting of side view camera |
| CN109342455A (en) * | 2018-09-18 | 2019-02-15 | 广东工业大学 | A kind of the plastic tube large area defect detecting device and its detection method of view-based access control model |
| CN112414942A (en) * | 2020-11-27 | 2021-02-26 | 长安大学 | Visual cable detection device with adjustable detection space closed shooting distance |
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| CN202791428U (en) * | 2012-07-25 | 2013-03-13 | 电子科技大学 | LED lighting device for realizing uniform light reception on surface of cylinder |
| CN104777175A (en) * | 2014-01-09 | 2015-07-15 | 宝山钢铁股份有限公司 | Imaging method and device used for thermal-state cylindrical long product surface quality visual detection |
| CN205333543U (en) * | 2015-12-17 | 2016-06-22 | 大连实远科技发展有限公司 | Positioning fixture is used in outer surface defect inspection of column |
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| JPH05157542A (en) * | 1991-12-03 | 1993-06-22 | Sekisui Chem Co Ltd | Surface inspecting apparatus |
| CN202791428U (en) * | 2012-07-25 | 2013-03-13 | 电子科技大学 | LED lighting device for realizing uniform light reception on surface of cylinder |
| CN104777175A (en) * | 2014-01-09 | 2015-07-15 | 宝山钢铁股份有限公司 | Imaging method and device used for thermal-state cylindrical long product surface quality visual detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108760765A (en) * | 2018-05-24 | 2018-11-06 | 武汉精测电子集团股份有限公司 | A kind of surface damage defect detecting device and method based on the shooting of side view camera |
| CN109342455A (en) * | 2018-09-18 | 2019-02-15 | 广东工业大学 | A kind of the plastic tube large area defect detecting device and its detection method of view-based access control model |
| CN112414942A (en) * | 2020-11-27 | 2021-02-26 | 长安大学 | Visual cable detection device with adjustable detection space closed shooting distance |
| CN112414942B (en) * | 2020-11-27 | 2023-09-01 | 长安大学 | Visual cable detection device with adjustable detection space closed shooting distance |
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Application publication date: 20180501 |
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