CN105181709A - Combined multiple-light-source on-line detection device and method for appearance defects of brake pad - Google Patents
Combined multiple-light-source on-line detection device and method for appearance defects of brake pad Download PDFInfo
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- CN105181709A CN105181709A CN201510661607.9A CN201510661607A CN105181709A CN 105181709 A CN105181709 A CN 105181709A CN 201510661607 A CN201510661607 A CN 201510661607A CN 105181709 A CN105181709 A CN 105181709A
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Abstract
The invention discloses a combined multiple-light-source on-line detection device and method for appearance defects of a brake pad. A direct-current motor and speed adjustor is connected with a conveying belt, a support is installed on a base, an industrial camera module, a coaxial light source module and an annular light source module are installed on the portion, above the conveying belt, of the support, and a backlight source module is arranged between the upper belt surface and the lower belt surface of the conveying belt; a pneumatic push rod and a defective product receiving box are installed close to the side edges of the upper belt surface of the conveying belt, and the pneumatic push rod is connected with an air compressor through a solenoid valve. The detection device further comprises a PLC, a relay module and a computor. A complete automatic detection assembly line for the appearance defects of the brake pad is formed and can detect different kinds of defects on the surface of the brake pad on line in real time, the defects that multi-station detection in the prior art is large in occupied area and low in efficiency are overcome, multi-station detection is integrated, equipment cost and labor cost are reduced, and the working efficiency is improved.
Description
Technical field
The present invention is a kind of on-line measuring device and method, especially relate to a kind of brake block open defect combined type multiple light courcess on-line measuring device and method, utilizes machine vision technique to detect brake block open defect.
Background technology
Brake block is being commonly called as of brake facing, is the friction material of contact brake drum (dish).When driver has brake behavior, brake block is under pressure, and produces friction force with brake drum (dish), thus reaches the object that vehicle subtracts.Brake block is the important safety member of motor vehicle braking system, and its quality directly affects the braking ability of vehicle, is related to the security of the lives and property of vehicle driver and crew.
In industrial production line, in order to meet the bidirectional demand of speed of production and product quality, need to coordinate each flow process on production line to carry out the detection of the performance index such as outward appearance, size.Various for this defect kind of brake block, the unconspicuous object of defect, the methods such as manual detection need be touched by hand, visual, illumination reflection, light projection detect the surface imperfection of brake block.Due to the visual fatigue of quality inspection workman, the factors such as anxious state of mind make classic method just exist quality standard objectivity poor and, detection speed is slow, efficiency is low, be difficult to the detection speed of tens per minute, and it is larger that the examined personnel of testing result are responsible for impact, simultaneously for the detected object that this test item of brake block is more, traditional Machine Vision Detection can only detect a certain class defect, and Optimum Design system equipment cost is high, efficiency is low, so, a kind of combined type multiple light courcess open defect on-line measuring device is needed in a hurry at brake block production industry.
Summary of the invention
In order to solve Problems existing in background technology, the object of this invention is to provide a kind of brake block open defect combined type multiple light courcess on-line measuring device and method, can be used for detecting the brake block open defect on production line carrying out Non-contact nondestructive on-line checkingi.
To achieve these goals, the technical solution adopted in the present invention is:
One, a kind of brake block open defect combined type multiple light courcess on-line measuring device:
Comprise the travelling belt for transmitting brake block, direct current generator and speed regulator, substandard products rewinding box, optoelectronic switch, air compressor, solenoid valve and air-leg; Direct current generator and speed regulator are connected with the main drive shaft of travelling belt side to drive and rotate and drive travelling belt to run, support is vertically fixedly mounted on and is positioned on the pedestal on ground, support is positioned at travelling belt side, support above travelling belt is provided with industrial camera module, coaxial light source module and annular light source module, travelling belt is provided with back light module between lower belt surface;
Travelling belt is provided with the air-leg for promoting defective brake block near edge, zone face side, air-leg is positioned at immediately below annular light source module, on travelling belt, zone face opposite side edge is provided with the substandard products rewinding box for accommodating defective brake block, optoelectronic switch is arranged on air-leg top by optoelectronic switch frame, and air-leg is connected with air compressor through solenoid valve.
Described industrial camera module comprises industrial camera, Quick-mounting board, camera fixed block and for camera adjustments device that is upper and lower and Level tune industrial camera height, industrial camera is arranged on camera adjustments device by Quick-mounting board, camera adjustments device pedestal is fixedly connected with camera fixed block, and camera fixed block is fixedly mounted on support by contiguous block bar structure; Described coaxial light source module comprises coaxial light source and coaxial light source fixed block, and coaxial light source is mounted by means of bolts on coaxial light source fixed block, and coaxial light source fixed block is fixedly mounted on support by contiguous block bar structure; Described annular light source module comprises annular light source and annular light source fixed block, and annular light source is mounted by means of bolts on annular light source fixed block, and annular light source fixed block is fixedly mounted on support by contiguous block bar structure; Described back light module comprises back light and back light fixed block, back light is mounted by means of bolts on back light fixed block, back light fixed block is fixedly mounted on support by contiguous block bar structure, and radiant 29 passes horizontal groove by contiguous block bar structure; Described industrial camera, coaxial light source, annular light source and back light are coaxially installed successively, industrial camera towards immediately below.
Described camera adjustments device comprises y to fixed block, y to draw runner, x to fixed block and x to draw runner, Quick-mounting board is fixedly connected with to draw runner with the x of level, x is embedded into x to draw runner and forms sliding pair in the dovetail groove of level on fixed block, x is to fixed block and y to draw runner fixed-link, the dovetail groove that y has on draw runner coordinates mutually embedding formation sliding pair with y to fixed block, and y is fixedly connected with to fixed block with camera fixed block.
Also comprise PLC, relay module and computing machine, direct current generator and speed regulator, coaxial light source, annular light source are all connected with PLC by relay module with back light, optoelectronic switch, solenoid valve are all connected with PLC, and industrial camera is all connected with computing machine with PLC.
Described industrial camera is technical grade face battle array cmos camera.
The zone face of described travelling belt adopts transparent material.
Brake block accounts for 2/3-3/4 in the industrial camera visual field, and coaxial light source module is positioned at below industrial camera, and its optical axis overlaps with industrial camera camera lens optical axis, and coaxial light source can uniform irradiation brake block and peripheral extent thereof, its optical axis and industrial camera optical axis coincidence.Described annular light source module is positioned at correct position below coaxial light source module, its optical axis and coaxial light source optical axis coincidence, and annular light source can irradiate brake block edges at two ends.Back light module is positioned at below annular light source module, its optical axis and annular light source optical axis coincidence.
Two, a kind of brake block open defect combined type multiple light courcess online test method:
1) adopt said apparatus, first industrial camera is demarcated;
2) direct picture gathering qualified brake block by calibrated industrial camera carries out processing rear making brake block template, the direct picture of qualified brake block comprises contour images and edges at two ends image, and brake block template is used for the coupling that subsequent step detects brake block open defect;
3) brake block is transmitted by travelling belt, is detected when brake block is transferred to optoelectronic switch place, and PLC controls direct current generator and stops operating;
4) PLC is by controlling the contour images of back light and industrial camera collection brake block, is processed after image procossing according to testing result by air-leg to this brake block;
5) PLC is by controlling the edges at two ends image of annular light source and industrial camera collection brake block, is processed after image procossing according to testing result by air-leg to this brake block;
PLC, by controlling the surface image of coaxial light source and industrial camera collection brake block, is processed this brake block by air-leg according to testing result after image procossing;
PLC controls to close coaxial light source, controls to open direct current generator, and direct current generator drives travelling belt to transmit to the left, completes the on-line checkingi of brake block number of drawbacks.
Described step 4) specific as follows: PLC controls to open back light, PLC triggers the contour images that industrial camera gathers brake block, the contour images collected is processed, obtain the result whether brake block profile is complete: if brake block profile is complete, then proceed next step, otherwise PLC controls air-leg and promotes brake block and enter substandard products rewinding box, returns step 3) carry out the detection of next brake block.
Described step 5) specific as follows: PLC controls to close back light, control to open annular light source, PLC triggers the edges at two ends image that industrial camera gathers brake block, the edges at two ends image collected is processed, obtain the result whether embossing seal character of brake block edges at two ends is complete: if the embossing seal character of brake block edges at two ends is complete, then proceed next step, otherwise PLC controls air-leg and promotes brake block and enter substandard products rewinding box, returns step 3) carry out the detection of next brake block.
Described step 6) specific as follows: PLC controls to close annular light source, control to open coaxial light source, PLC triggers the surface image that industrial camera gathers brake block, after the surface image collected is processed, obtain the result whether flaw size of disc surface is qualified: if the flaw size of disc surface is qualified, then proceed next step, otherwise PLC controls air-leg and promotes brake block and enter substandard products rewinding box, returns step 3) carry out the detection of next brake block.
The present invention detects on the travelling belt in rotating whether there is brake block by the optoelectronic switch be arranged on above travelling belt rear cross beam, if exist, PLC controls travelling belt and stops transmitting, the light source on combined type multiple light courcess vision-based detection frame is opened successively by PLC, industrial camera while opening light source on trigger combination formula multiple light courcess vision-based detection frame is taken pictures, and transfer to computing machine, judge whether brake block exists open defect by image processing program, if exist, with PLC communication, control air-leg by PLC and brake block is pushed into substandard products rewinding box, if there is not open defect, continue to forward along travelling belt.
Compared with background technology, the beneficial effect that the present invention has is:
The present invention constitutes complete disc surface defect and automatically detects streamline, replaces original low reliability, inefficient manual detection, original complicated testing process can be detected on streamline automatically at one and automatically complete.
The present invention detects the different types of defect of disc surface by arranging of Different Light, and realize real-time online detection, improve Optimum Design in the past and take up an area many, inefficient deficiency, achieve Optimum Design integrated, decrease equipment cost, reduce cost of labor, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is the general assembly drawing of apparatus of the present invention.
Fig. 2 is the structural representation of apparatus of the present invention.
Fig. 3 is the structural representation that annular light source of the present invention, coaxial light source and camera are installed.
Fig. 4 is the scheme of installation of back light of the present invention.
Fig. 5 is electrical control connection layout of the present invention.
Fig. 6 is the overhaul flow chart of the inventive method.
In figure, 1, travelling belt, 2, direct current generator and speed regulator, 3, substandard products rewinding box, 4, optoelectronic switch, 5, PLC, 6, relay module, 7, computing machine, 8, air compressor, 9, solenoid valve, 10, air-leg, 11, coaxial light source fixed block, 12, pedestal, 13, support, 14, industrial camera, 15, camera adjustments device, 16, Quick-mounting board, 17, coaxial light source module, 18, annular light source module, 19, back light module, 20, camera fixed block, 21, contiguous block, 22, connecting link, 23, y is to fixed block, 24, y is to draw runner, 25, x is to fixed block, 26, x is to draw runner, 27, coaxial light source, 28, annular light source, 29, back light, 30, optoelectronic switch frame, 31, annular light source fixed block, 32, back light fixed block.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the present invention includes travelling belt 1, direct current generator and speed regulator 2 for transmitting brake block, substandard products rewinding box 3, optoelectronic switch 4, solenoid valve 9 and air-leg 10; Direct current generator and speed regulator 2 are connected with the main drive shaft of travelling belt 1 side to drive and rotate and drive travelling belt 1 to run, support 13 is vertically fixedly mounted on and is positioned on the pedestal 12 on ground, support 13 is positioned at travelling belt 1 side, support 13 above travelling belt 1 is provided with industrial camera module, coaxial light source module 17 and annular light source module 18, and travelling belt 1 is provided with back light module 19 between lower belt surface.
As shown in Figure 2, travelling belt 1 is provided with the air-leg 10 for promoting defective brake block near edge, zone face side, air-leg 10 is positioned at immediately below annular light source module 18, on the travelling belt 1 relative with air-leg 10 position, zone face opposite side edge is provided with the substandard products rewinding box 3 for accommodating defective brake block, optoelectronic switch 4 is arranged on air-leg 10 top by optoelectronic switch frame 30, air-leg 10 is connected with air compressor 8 through solenoid valve 9, and solenoid valve 9 is arranged on travelling belt 1 edge with air-leg 10 homonymy.
As shown in Figure 5, the present invention also comprises PLC 5, relay module 6 and computing machine 7, direct current generator and speed regulator 2, coaxial light source 27, annular light source 28 are all connected with PLC 5 by relay module 6 with back light 29, optoelectronic switch 4, solenoid valve 9 are all connected with PLC 5, and industrial camera 14 is all connected with computing machine 7 with PLC 5.
As shown in Figure 3, industrial camera module comprises industrial camera 14, Quick-mounting board 16, camera fixed block 20 and for up and down and Level tune industrial camera 14 camera adjustments device 15 highly, industrial camera 14 is arranged on camera adjustments device 15 by Quick-mounting board 16, camera adjustments device 15 specifically can adopt sliding block guide track structure, Quick-mounting board 16 is fixed by bolt and camera adjustments device 15, camera adjustments device 15 base is fixedly connected with camera fixed block 20, camera fixed block 20 is fixedly mounted on support 13 by contiguous block bar structure, contiguous block bar structure comprises contiguous block 21 and connecting link 22,
As shown in Figure 3, coaxial light source module 17 comprises coaxial light source 27 and coaxial light source fixed block 11, and coaxial light source 27 is mounted by means of bolts on coaxial light source fixed block 11, and coaxial light source fixed block 11 is fixedly mounted on support 13 by contiguous block bar structure.
As shown in Figure 3, annular light source module 18 comprises annular light source 28 and annular light source fixed block 31, and annular light source 28 is mounted by means of bolts on annular light source fixed block 31, and annular light source fixed block 31 is fixedly mounted on support 13 by contiguous block bar structure.
As shown in Figure 4, back light module 19 comprises back light 29 and back light fixed block 32, and back light 29 is mounted by means of bolts on back light fixed block 32, and back light fixed block 32 is fixedly mounted on support 13 by contiguous block bar structure.In concrete enforcement, travelling belt 1 side is also provided with the beam along direction of transfer, and beam sides has the horizontal groove along direction of transfer, and the contiguous block bar structure of back light 29 is connected with support 13 through horizontal groove.
Adjustment contiguous block and connecting link structure make industrial camera 14, coaxial light source 27, annular light source 28 coaxially install successively with back light 29, and industrial camera 14, coaxial light source 27, annular light source 28 and back light 29 optical axis coincidence, industrial camera 14 towards immediately below, adjustment contiguous block and connecting link structure make coaxial light source 27 can uniform irradiation to immediately below travelling belt 1 on whole brake block and neighbouring neighboring area thereof, annular light source 28 is irradiated to brake block edges at two ends.
Camera adjustments device 15 comprises y to fixed block 23, y to draw runner 24, x to fixed block 25 and x to draw runner 26, Quick-mounting board 16 is fixedly connected with to draw runner 26 with the x of level, x is embedded into x to draw runner 26 and forms sliding pair in the dovetail groove of level on fixed block 25, x is fixedly connected with to draw runner 24 to fixed block 25 with y, the dovetail groove that y has on draw runner 24 coordinates mutually embedding formation sliding pair with y to fixed block 23, and y is fixedly connected with to fixed block 23 with camera fixed block 20.
Industrial camera 14 is technical grade face battle array cmos camera, and industrial camera 14 is connected by usb3.0 with computing machine 7, and PLC 5 and computing machine 7 are by serial ports connecting communication.
The zone face of travelling belt 1 adopts transparent material, and annular light source 28 adopts high angle direct illumination mode, and back light 29 adopts collimated backlight light source.
Particularly, direct current generator and speed regulator 2 are connected with PLC 5 and power supply by the a-road-through road of relay module 6, coaxial light source 27, annular light source 28 are connected with PLC 5 respectively by the other three road paths of relay module 6 with back light 29, solenoid valve 9 is connected with air-leg 10, PLC 5 output terminal and air compressor 8 respectively, and optoelectronic switch 4 is connected with PLC 5 input end.
See Fig. 6, the testing process of specific embodiment of the invention is:
1) function that can first utilize halcon to increase income is demarcated industrial camera;
2) external trigger state is arranged on by calibrated industrial camera, make brake block template after the direct picture gathering an opening and closing lattice brake block by external trigger carries out image enhaucament, Iamge Segmentation process, brake block template is used for the coupling that subsequent step detects brake block open defect;
3) brake block is transmitted by travelling belt, is detected when brake block is transferred to optoelectronic switch place, and PLC 5 pilot relay module first path disconnects and direct current generator is stopped operating;
4) back light is opened in the conducting of PLC 5 pilot relay module alternate path, PLC 5 triggers the contour images that industrial camera gathers brake block, image enhaucament, Iamge Segmentation, rim detection, edge conjunction, outline search and template matches process are carried out successively to the contour images collected, obtain the result whether brake block profile is complete:
If brake block profile is complete, then proceed next step, otherwise computing machine and PLC 5 communication, PLC 5 Controlling solenoid valve makes air compressor and air-leg conducting, air-leg promotes brake block and enters substandard products rewinding box, returns step 3) carry out the detection of next brake block;
5) PLC 5 pilot relay module alternate path disconnects and closes back light, annular light source is opened in the conducting of pilot relay module third path, PLC 5 triggers the edges at two ends image that industrial camera gathers brake block, computing machine carries out image enhaucament, Iamge Segmentation, Character segmentation and template matches process to the edges at two ends image collected, and obtains the result whether embossing seal character of brake block edges at two ends is complete:
If the embossing seal character of brake block edges at two ends is complete, then proceed next step, otherwise computing machine and PLC 5 communication, PLC 5 Controlling solenoid valve makes air compressor and air-leg conducting, air-leg promotes brake block and enters substandard products rewinding box, returns step 3) carry out the detection of next brake block;
6) PLC 5 pilot relay module third path disconnects and closes annular light source, coaxial light source is opened in pilot relay module the 4th path conducting, PLC 5 triggers the surface image that industrial camera gathers brake block, computing machine obtains the result whether flaw size of disc surface is qualified after carrying out image enhaucament, Iamge Segmentation, feature extraction, bolb analysis, minimum external square computing to the surface image collected:
If the flaw size of disc surface is qualified, then proceed next step, otherwise computing machine and PLC 5 communication, PLC 5 Controlling solenoid valve makes air compressor and air-leg conducting, air-leg promotes brake block and enters substandard products rewinding box, returns step 3) carry out the detection of next brake block;
7) PLC 5 pilot relay module the 4th path disconnects and closes coaxial light source, and direct current generator is opened in the conducting of pilot relay module first path, and direct current generator drives travelling belt to transmit to the left, completes the on-line checkingi of brake block number of drawbacks.
Detect qualified brake block to be placed in certified products rewinding case through travelling belt transmission.
The above embodiment is a kind of pipelining, visible the present invention is applicable to carry out surface defects detection to different size brake block, achieve disc surface defect Aulomatizeted Detect, compared to traditional human eye vision detection method, improve accuracy of detection, detection efficiency, reduce cost of labor; And achieve multiple light courcess to detect, in less space, be integrated with light source many, achieve the detection to brake block kinds of surface defect, compared to traditional Optimum Design, save space, decrease equipment cost, improve work efficiency, there is outstanding significant technique effect.
Claims (10)
1. a brake block open defect combined type multiple light courcess on-line measuring device, is characterized in that: comprise the travelling belt (1) for transmitting brake block, direct current generator and speed regulator (2), substandard products rewinding box (3), optoelectronic switch (4), air compressor (8), solenoid valve (9) and air-leg (10); Direct current generator and speed regulator (2) are connected with the main drive shaft of travelling belt (1) side to drive and rotate and drive travelling belt (1) to run, support (13) be vertically fixedly mounted on be positioned over ground pedestal (12) on, support (13) is positioned at travelling belt (1) side, the support (13) of travelling belt (1) top is provided with industrial camera module, coaxial light source module (17) and annular light source module (18), between the upper lower belt surface of travelling belt (1), back light module (19) is installed; Air-leg (10) for promoting defective brake block is installed near the upper edge, zone face side of travelling belt (1), air-leg (10) is positioned at immediately below annular light source module (18), the upper zone face opposite side edge of travelling belt (1) is provided with the substandard products rewinding box (3) for accommodating defective brake block, optoelectronic switch (4) is arranged on air-leg (10) top by optoelectronic switch frame (30), and air-leg (10) is connected with air compressor (8) through solenoid valve (9).
2. a kind of brake block open defect combined type multiple light courcess on-line measuring device according to claim 1, it is characterized in that: described industrial camera module comprises industrial camera (14), Quick-mounting board (16), camera fixed block (20) and for up and down and Level tune industrial camera (14) camera adjustments device (15) highly, industrial camera (14) is arranged on camera adjustments device (15) by Quick-mounting board (16), camera adjustments device (15) base is fixedly connected with camera fixed block (20), camera fixed block (20) is fixedly mounted on support (13) by contiguous block bar structure,
Described coaxial light source module (17) comprises coaxial light source (27) and coaxial light source fixed block (11), coaxial light source (27) is mounted by means of bolts on coaxial light source fixed block (11), and coaxial light source fixed block (11) is fixedly mounted on support (13) by contiguous block bar structure;
Described annular light source module (18) comprises annular light source (28) and annular light source fixed block (31), annular light source (28) is mounted by means of bolts on annular light source fixed block (31), and annular light source fixed block (31) is fixedly mounted on support (13) by contiguous block bar structure;
Described back light module (19) comprises back light (29) and back light fixed block (32), back light (29) is mounted by means of bolts on back light fixed block (32), and back light fixed block (32) is fixedly mounted on support (13) by contiguous block bar structure;
Described industrial camera (14), coaxial light source (27), annular light source (28) and back light (29) are coaxially installed successively, industrial camera (14) towards immediately below.
3. a kind of brake block open defect combined type multiple light courcess on-line measuring device according to claim 2, it is characterized in that: described camera adjustments device (15) comprises y to fixed block (23), y is to draw runner (24), x is to fixed block (25) and x to draw runner (26), Quick-mounting board (16) is fixedly connected with to draw runner (26) with the x of level, x is embedded into x to draw runner (26) and forms sliding pair in the dovetail groove of the upper level of fixed block (25), x is to fixed block (25) and y to draw runner (24) fixed-link, the dovetail groove that y has on draw runner (24) coordinates mutually embedding formation sliding pair with y to fixed block (23), y is fixedly connected with to fixed block (23) with camera fixed block (20).
4. a kind of brake block open defect combined type multiple light courcess on-line measuring device according to claim 2, it is characterized in that: also comprise PLC (5), relay module (6) and computing machine (7), direct current generator and speed regulator (2), coaxial light source (27), annular light source (28) is all connected with PLC (5) by relay module (6) with back light (29), optoelectronic switch (4), solenoid valve (9) is all connected with PLC (5), industrial camera (14) is all connected with computing machine (7) with PLC (5).
5. a kind of brake block open defect combined type multiple light courcess on-line measuring device according to claim 2, is characterized in that: described industrial camera (14) is technical grade face battle array cmos camera.
6. a kind of brake block open defect combined type multiple light courcess on-line measuring device according to claim 1, is characterized in that: the zone face of described travelling belt (1) adopts transparent material.
7. a brake block open defect combined type multiple light courcess online test method, is characterized in that adopting the arbitrary described device of claim 1 ~ 6:
1) first industrial camera is demarcated;
2) direct picture gathering qualified brake block by calibrated industrial camera carries out processing rear making brake block template, the direct picture of qualified brake block comprises contour images and edges at two ends image, and brake block template is used for the coupling that subsequent step detects brake block open defect;
3) brake block is transmitted by travelling belt, is detected when brake block is transferred to optoelectronic switch place, and PLC (5) controls direct current generator and stops operating;
4) PLC (5) is by controlling the contour images of back light and industrial camera collection brake block, is processed after image procossing according to testing result by air-leg to this brake block;
5) PLC (5) is by controlling the edges at two ends image of annular light source and industrial camera collection brake block, is processed after image procossing according to testing result by air-leg to this brake block;
(6) PLC (5) is by controlling the surface image of coaxial light source and industrial camera collection brake block, is processed after image procossing according to testing result by air-leg to this brake block;
(7) PLC (5) controls to close coaxial light source, controls to open direct current generator, and direct current generator drives travelling belt to transmit to the left, completes the on-line checkingi of brake block number of drawbacks.
8. a kind of brake block open defect combined type multiple light courcess online test method according to claim 7, it is characterized in that: described step 4) specific as follows: PLC (5) controls to open back light, PLC (5) triggers the contour images that industrial camera gathers brake block, the contour images collected is processed, obtains the result whether brake block profile is complete:
If brake block profile is complete, then proceed next step, otherwise PLC (5) controls air-leg promotes brake block and enter substandard products rewinding box, returns step 3) carry out the detection of next brake block.
9. a kind of brake block open defect combined type multiple light courcess online test method according to claim 7, it is characterized in that: described step 5) specific as follows: PLC (5) controls to close back light, control to open annular light source, PLC (5) triggers the edges at two ends image that industrial camera gathers brake block, the edges at two ends image collected is processed, obtain the result whether embossing seal character of brake block edges at two ends is complete: if the embossing seal character of brake block edges at two ends is complete, then proceed next step, otherwise PLC (5) controls air-leg promotion brake block and enters substandard products rewinding box, return step 3) carry out the detection of next brake block.
10. a kind of brake block open defect combined type multiple light courcess online test method according to claim 7, it is characterized in that: described step 6) specific as follows: PLC (5) controls to close annular light source, control to open coaxial light source, PLC (5) triggers the surface image that industrial camera gathers brake block, after the surface image collected is processed, obtain the result whether flaw size of disc surface is qualified: if the flaw size of disc surface is qualified, then proceed next step, otherwise PLC (5) controls air-leg promotion brake block and enters substandard products rewinding box, return step 3) carry out the detection of next brake block.
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| CN201510661607.9A CN105181709A (en) | 2015-10-14 | 2015-10-14 | Combined multiple-light-source on-line detection device and method for appearance defects of brake pad |
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| CN201510661607.9A CN105181709A (en) | 2015-10-14 | 2015-10-14 | Combined multiple-light-source on-line detection device and method for appearance defects of brake pad |
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| CN113313679A (en) * | 2021-05-21 | 2021-08-27 | 浙江大学 | Bearing surface defect detection method based on multi-source domain depth migration multi-light source integration |
| CN113358070A (en) * | 2021-07-07 | 2021-09-07 | 苏州鑫睿益荣信息技术有限公司 | Automobile brake pad flatness and pin height detection system and detection method thereof |
| CN113976452A (en) * | 2021-07-30 | 2022-01-28 | 广东省威汇智能科技有限公司 | Failure detection method and device based on flexible flat cable |
| CN113834815A (en) * | 2021-09-10 | 2021-12-24 | 镇江亿诺伟视智能科技有限公司 | Appearance detection equipment for irregular automobile electroplated part and use method thereof |
| CN113953212A (en) * | 2021-10-11 | 2022-01-21 | 安徽科技学院 | Product packaging detection device based on machine vision |
| CN115447989A (en) * | 2022-09-13 | 2022-12-09 | 领胜城科技（江苏）有限公司 | Magnetic material automatic assembly line of magnetic component |
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