CN103487440A - Machine vision-based battery tab detection method and detection system thereof - Google Patents
Machine vision-based battery tab detection method and detection system thereof Download PDFInfo
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- CN103487440A CN103487440A CN201310381661.9A CN201310381661A CN103487440A CN 103487440 A CN103487440 A CN 103487440A CN 201310381661 A CN201310381661 A CN 201310381661A CN 103487440 A CN103487440 A CN 103487440A
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Abstract
The invention discloses a machine vision-based battery tab detection method. The machine vision-based battery tab detection method comprises the following steps: (1) arranging three sets of image pick-up devices; (2) arranging three sets of light source control devices and light sources; (3) arranging a baseband device; (4) arranging a deformation auxiliary device; (5) arranging a display device; (6) arranging an alarm device; (7) arranging an intelligent detection device; (8) putting a battery tab in place, turning on the power sources, keeping the devices in a working state, transmitting a control command by the intelligent detection device to the light source control devices to adjust the light sources, then transmitting the control command to the image pick-up devices, collecting perspective images of a side face, a front face and a reverse face of the battery tab, analyzing and processing each frame of received perspective image of the battery tab by the intelligent detection device to intelligently detect whether the battery tab is qualified. The invention also discloses a detection system using the detection method.
Description
Technical field
The invention belongs to technical field of nondestructive testing, be specifically related to a kind of battery pole ear detection method based on machine vision, and the detection system of implementing the method.
Background technology
At present, in the battery pole ear processing industry, there are battery pole ear individual layer, dimension overproof, have the mass defects such as bubble and failure welding.The Traditional Man detection method, exist that speed is slow, efficiency is low, flase drop, shortcoming that loss is high, can't meet need of production.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of battery pole ear detection method based on machine vision addressed the above problem, and the detection system of implementing the method.
The technical scheme that the present invention adopts for achieving the above object is:
A kind of battery pole ear detection method based on machine vision, it comprises the steps:
(1) three cover camera heads are set respectively, are used for gathering respectively front, the reverse side of battery pole ear, the fluoroscopic image of side;
(2) the three cover light sources that three cover light source control devices are set respectively and are connected with this device, described light source control device is used for the irradiation brightness of light source is regulated, and makes light source produce a uniform light-emitting area;
(3) base band device of a stable cell lug is set, makes battery pole ear to be measured keep stable when detected position;
(4) a deformation servicing unit is set, makes battery pole ear to be measured produce predetermined deformation;
(5) display device is set, shows current testing result and the fluoroscopic image of the front of the battery pole ear that collects, reverse side, side;
(6) warning device is set, it is defective being used for notifying the current battery pole ear testing result of operator;
(7) intelligent detection device is set, be provided with the Digital Image Processing chip of the process software of an analysis software that is integrated with gray analysis method in processing based on image and black and white gravity model appoach, the mathematical model based on battery pole ear graphic feature and gradation of image corresponding relation in described intelligent detection device, described intelligent detection device is connected with camera head, light source control device, base band device, warning device, display device and deformation servicing unit respectively;
(8) battery pole ear to be measured is placed, opening power, make above-mentionedly respectively to install in running orderly, and described intelligent detection device sends control command to light source control device, opens light source and carries out accommodation, produces a uniform light-emitting area; Send again control command to camera head, gather side, front, the reverse side fluoroscopic image of battery pole ear, and send to intelligent detection device; Described intelligent detection device is analyzed and is processed each frame fluoroscopic image of the battery pole ear that receives, whether the Intelligent Measurement battery pole ear is qualified, if defective, described intelligent detection device sends control command to warning device, the battery pole ear that reacts current is defective, and sends control command to base band device, stops transmitting product, after defective battery pole ear is carried out to mark, then carry out the detection of next battery pole ear; If qualified, proceed the detection of next battery pole ear.
Camera head in described step (1), it comprises camera lens, photoelectric conversion module, the A/D converter connected successively, described photoelectric conversion module, it comprises a plurality of photoelectrical couplers, described A/D converter is connected with described intelligent detection device.
Light source control device in described step (2), it comprises coaxial light source control device, planar light source control device, the light source control device that gathers the fluoroscopic image of battery pole ear front, reverse side is the coaxial light source control device, and the light source control device that gathers the fluoroscopic image of battery pole ear side is the planar light source control device; Light source in described step (2), it is the LED area source, and described LED area source is connected with light source control device.
Base band device in described step (3), it comprises a product base band, a pair of upper lower pressure wheel, a position adjusting mechanism and the pressure spring connected successively.
Deformation servicing unit in described step (4), it comprises that connecting successively a promotion tongue piece, promotes tongue piece body and a thrust spring.
Intelligent detection device in described step (7), it comprises Gige interface, image capture module, Digital Image Processing chip, digital signal output modules and the digital I/O interface connected successively, described Gige interface is connected with the A/D converter of described camera head, described digital I/O interface is connected with warning device, display device respectively, and described Digital Image Processing chip is connected with light source control device, base band device and deformation servicing unit respectively.
Described step (8), it specifically comprises the steps:
(81) the product base band that will carry a plurality of battery pole ears places, opening power, described camera head, light source control device, base band device, deformation servicing unit, display device, warning device, intelligent detection device are in running order, described intelligent detection device sends order to the planar light source control device, open the LED area source and carry out adaptive adjustment, described LED area source produces a uniform light-emitting area;
(82) described intelligent detection device sends respectively camera head, the deformation servicing unit of control command to side, the promotion tongue piece of described deformation servicing unit and the acting in conjunction of promotion tongue piece body, battery pole ear to be measured is fixed, again according to the characteristic of battery pole ear to be measured, the thrust spring of deformation servicing unit is set as to a predetermined value, make battery pole ear to be measured produce deformation, the fluoroscopic image that described battery pole ear produces deformation projects on the camera head of side, forms the projected light signal of battery pole ear to be measured;
(83) the projected light signal of battery pole ear to be measured is sent to photoelectric conversion module, because the size of the battery pole ear that each is to be measured is different with feature, the difference that causes image, so the photoelectrical coupler through photoelectric conversion module is converted to strong and weak different electric signal by the projected light signal of battery pole ear to be measured, through A/D converter, be converted to image digital signal again;
(84) described intelligent detection device is through the Gige interface, the image capture module Quick Acquisition is from the image digital signal of camera head, picking rate is per second 60 frames, again through the image processing chip, the image digital signal obtained is analyzed and processed, obtain the graph of relation between the suffered elastic force of battery pole ear and deflection, described intelligent detection device sends it to display device;
(85) graph of relation between the suffered elastic force of battery pole ear obtained according to step (84) and deflection, intelligent decision battery pole ear to be measured is the individual layer battery pole ear, or is the bilayer cells lug;
(86) judge when it is the individual layer battery pole ear, described intelligent detection device sends control command to warning device, the battery pole ear that reacts current is defective, and send control command to base band device, stop transmitting product, after defective battery pole ear is carried out to mark, then carry out the detection of next battery pole ear;
(87) judge when it is the bilayer cells lug, described intelligent detection device sends control command to control device, further detects.
It also comprises the steps:
(88) described intelligent detection device sends order to the coaxial light source control device, opens the LED area source and carries out adaptive adjustment, and described LED area source produces a uniform light-emitting area;
(89) described intelligent detection device sends respectively control command to camera head positive, reverse side, and the fluoroscopic image of described battery pole ear to be measured projects on camera head, forms the projected light signal of battery pole ear to be measured;
(90) the projected light signal of battery pole ear to be measured is sent to photoelectric conversion module, because the size of the battery pole ear that each is to be measured is different with feature, the difference that causes image, so the photoelectrical coupler through photoelectric conversion module is converted to strong and weak different electric signal by the projected light signal of battery pole ear to be measured, through A/D converter, be converted to image digital signal again;
(91) described intelligent detection device is through the Gige interface, the image capture module Quick Acquisition is from the image digital signal of camera head, picking rate is per second 60 frames, again through the image processing chip, the image digital signal obtained is analyzed and processed, obtain the size of three fluoroscopic images of battery pole ear to be measured and the distribution plan of feature, the size and the silhouette position that draw battery pole ear;
(92) size of the battery pole ear obtained according to step (91) and silhouette position, whether the size of intelligent decision battery pole ear is overproof, whether battery pole ear has bubble or battery pole ear failure welding whether;
If there is dimension overproof in battery pole ear, bubble or failure welding problem is arranged, described intelligent detection device sends control command to warning device, the battery pole ear that reacts current is defective, and send control command to base band device, stop transmitting product, after defective battery pole ear is carried out to mark, then carry out the detection of next battery pole ear;
If there is not dimension overproof in battery pole ear, bubble or failure welding problem are arranged, proceed the detection of next battery pole ear.
Implement the detection system of the above-mentioned battery pole ear detection method based on machine vision, it comprises three cover camera heads, an intelligent detection device, the three cover light source control devices that connect successively, and it also comprises a base band device, a deformation servicing unit, a warning device and a display device; Described intelligent detection device, it comprises Gige interface, image capture module, Digital Image Processing chip, digital signal output modules and the digital I/O interface connected successively, described Gige interface is connected with described camera head; Described Digital Image Processing chip is connected with light source control device, base band device and deformation servicing unit respectively; Described digital I/O interface is connected with warning device, display device respectively.
Described camera head, it comprises camera lens, photoelectric conversion module, the A/D converter connected successively, described photoelectric conversion module, it comprises a plurality of photoelectrical couplers, described A/D converter is connected with described intelligent detection device;
Described light source control device, it comprises coaxial light source control device, planar light source control device, the light source control device that gathers the fluoroscopic image of battery pole ear front, reverse side is the coaxial light source control device, and the light source control device that gathers the fluoroscopic image of battery pole ear side is the planar light source control device; Described light source, it is the LED area source, and described LED area source is connected with light source control device;
Described base band device, it comprises a product base band, a pair of upper lower pressure wheel, a position adjusting mechanism and the pressure spring connected successively;
Described deformation servicing unit, it comprises that connecting successively a promotion tongue piece, promotes tongue piece body and a thrust spring.
Beneficial effect of the present invention is:
Detection method provided by the invention and system, employing is integrated with analysis software, and the Digital Image Processing chip of the process software of the mathematical model based on battery pole ear graphic feature and gradation of image corresponding relation of gray analysis method in processing based on image and black and white gravity model appoach, to battery pole ear be whether the individual layer battery pole ear, dimension overproof, bubble or failure welding are analyzed and are processed, and advanced person's machine vision technique applies in the present invention now, makes the lug Non-Destructive Testing.The characteristics such as have measuring accuracy high, measuring speed is fast, practical, simple to operate, and stability is good, simultaneously, also saved more human capital.
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
The accompanying drawing explanation
Fig. 1 is structural framing figure of the present invention;
The graph of relation that Fig. 2 is battery pole ear elastic force of the present invention and deflection;
Fig. 3 is module frame figure of the present invention;
Fig. 4 is workflow diagram of the present invention;
Wherein:
1. camera head 2. camera lens 3. coaxial light source control device
4. promote tongue piece 5. planar light source control device 6. battery pole ears
7. go up lower pressure wheel 8. position adjusting mechanism 9. pressure springs
10. thrust spring 11. promotes tongue piece body 12. product base band
Embodiment
Referring to Fig. 1～Fig. 4, the invention provides a kind of battery pole ear detection method based on machine vision, it comprises the steps:
(1) three cover camera heads 1 are set respectively, are used for gathering respectively front, the reverse side of battery pole ear 6, the fluoroscopic image of side;
(2) the three cover light sources that three cover light source control devices are set respectively and are connected with this device, described light source control device is used for the irradiation brightness of light source is regulated, and makes light source produce a uniform light-emitting area;
(3) base band device of a stable cell lug 6 is set, makes battery pole ear to be measured 6 keep stable when detected position;
(4) a deformation servicing unit is set, makes battery pole ear to be measured 6 produce predetermined deformation;
(5) display device is set, shows current testing result and the fluoroscopic image of the front of the battery pole ear 6 that collects, reverse side, side;
(6) warning device is set, it is defective being used for notifying the current battery pole ear of operator 6 testing results;
(7) intelligent detection device is set, be provided with the Digital Image Processing chip of the process software of an analysis software that is integrated with gray analysis method in processing based on image and black and white gravity model appoach, the mathematical model based on battery pole ear 6 graphic features and gradation of image corresponding relation in described intelligent detection device, described intelligent detection device is connected with camera head 1, light source control device, base band device, warning device, display device and deformation servicing unit respectively;
(8) battery pole ear to be measured 6 is placed, opening power, make above-mentionedly respectively to install in running orderly, and described intelligent detection device sends control command to light source control device, opens light source and carries out accommodation, produces a uniform light-emitting area; Send again control command to camera head 1, gather side, front, the reverse side fluoroscopic image of battery pole ear 6, and send to intelligent detection device; Described intelligent detection device is analyzed and is processed each frame fluoroscopic image of the battery pole ear 6 that receives, whether Intelligent Measurement battery pole ear 6 is qualified, if defective, described intelligent detection device sends control command to warning device, the battery pole ear 6 that reacts current is defective, and sends control command to base band device, stops transmitting product, after defective battery pole ear 6 is carried out to mark, then carry out the detection of next battery pole ear 6; If qualified, proceed the detection of next battery pole ear 6.
Light source control device in described step (2), it comprises coaxial light source control device 3, planar light source control device 5, the light source control device that gathers the fluoroscopic image of battery pole ear 6 fronts, reverse side is coaxial light source control device 3, and the light source control device that gathers the fluoroscopic image of battery pole ear 6 sides is planar light source control device 5; Light source in described step (2), it is the LED area source, and described LED area source is connected with light source control device.
Base band device in described step (3), it comprises a product base band 12, a pair of upper lower pressure wheel 7, a position adjusting mechanism 8 and the pressure spring 9 connected successively.
Deformation servicing unit in described step (4), it comprises that connecting successively a promotion tongue piece 4, promotes tongue piece body 11 and a thrust spring 10.
Intelligent detection device in described step (7), it comprises Gige interface, image capture module, Digital Image Processing chip, digital signal output modules and the digital I/O interface connected successively, described Gige interface is connected with the A/D converter of described camera head 1, described digital I/O interface is connected with warning device, display device respectively, and described Digital Image Processing chip is connected with light source control device, base band device and deformation servicing unit respectively.
Described step (8), it specifically comprises the steps:
(81) the product base band 12 that will carry a plurality of battery pole ears 6 places, opening power, described camera head 1, light source control device, base band device, deformation servicing unit, display device, warning device, intelligent detection device are in running order, described intelligent detection device sends order to planar light source control device 5, open the LED area source and carry out adaptive adjustment, described LED area source produces a uniform light-emitting area;
(82) described intelligent detection device sends respectively camera head 1, the deformation servicing unit of control command to side, the promotion tongue piece 4 of described deformation servicing unit and 11 actings in conjunction of promotion tongue piece body, battery pole ear to be measured 6 is fixed, again according to the characteristic of battery pole ear to be measured 6, the thrust spring of deformation servicing unit 10 is set as to a predetermined value, make battery pole ear to be measured 6 produce deformation, the fluoroscopic image that described battery pole ear 6 produces deformation projects on the camera head 1 of side, forms the projected light signal of battery pole ear to be measured 6;
(83) the projected light signal of battery pole ear to be measured 6 is sent to photoelectric conversion module, because the size of each battery pole ear to be measured 6 is different with feature, the difference that causes image, so the photoelectrical coupler through photoelectric conversion module is converted to strong and weak different electric signal by the projected light signal of battery pole ear to be measured 6, through A/D converter, be converted to image digital signal again;
(84) described intelligent detection device is through the Gige interface, the image capture module Quick Acquisition is from the image digital signal of camera head 1, picking rate is per second 60 frames, again through the image processing chip, the image digital signal obtained is analyzed and processed, obtain the graph of relation between the suffered elastic force of battery pole ear 6 and deflection, described intelligent detection device sends it to display device;
(85) graph of relation between the suffered elastic force of battery pole ear 6 obtained according to step (84) and deflection, intelligent decision battery pole ear 6 to be measured is individual layer battery pole ear 6, or is bilayer cells lug 6;
(86) judge when it is individual layer battery pole ear 6, described intelligent detection device sends control command to warning device, the battery pole ear 6 that reacts current is defective, and send control command to base band device, stop transmitting product, after defective battery pole ear 6 is carried out to mark, then carry out the detection of next battery pole ear 6;
(87) judge when it is bilayer cells lug 6, described intelligent detection device sends control command to control device 3, further detects.
It also comprises the steps:
(88) described intelligent detection device sends order to coaxial light source control device 3, opens the LED area source and carries out adaptive adjustment, and described LED area source produces a uniform light-emitting area;
(89) described intelligent detection device sends respectively control command to camera head 1 positive, reverse side, and the fluoroscopic image of described battery pole ear 6 to be measured projects on camera head 1, forms the projected light signal of battery pole ear to be measured 6;
(90) the projected light signal of battery pole ear to be measured 6 is sent to photoelectric conversion module, because the size of each battery pole ear to be measured 6 is different with feature, the difference that causes image, so the photoelectrical coupler through photoelectric conversion module is converted to strong and weak different electric signal by the projected light signal of battery pole ear to be measured 6, through A/D converter, be converted to image digital signal again;
(91) described intelligent detection device is through the Gige interface, the image capture module Quick Acquisition is from the image digital signal of camera head 1, picking rate is per second 60 frames, again through the image processing chip, the image digital signal obtained is analyzed and processed, obtain the size of three fluoroscopic images of battery pole ear 6 to be measured and the distribution plan of feature, the size and the silhouette position that draw battery pole ear 6;
(92) size of the battery pole ear 6 obtained according to step (91) and silhouette position, whether the size of intelligent decision battery pole ear 6 is overproof, whether battery pole ear 6 has bubble or battery pole ear 6 failure welding whether;
If there is dimension overproof in battery pole ear 6, bubble or failure welding problem is arranged, described intelligent detection device sends control command to warning device, the battery pole ear 6 that reacts current is defective, and send control command to base band device, stop transmitting product, after defective battery pole ear 6 is carried out to mark, then carry out the detection of next battery pole ear 6;
If there is not dimension overproof in battery pole ear 6, bubble or failure welding problem are arranged, proceed the detection of next battery pole ear 6.
Implement the detection system of the above-mentioned battery pole ear detection method based on machine vision, it comprises three cover camera heads 1, an intelligent detection device, the three cover light source control devices that connect successively, and it also comprises a base band device, a deformation servicing unit, a warning device and a display device; Described intelligent detection device, it comprises Gige interface, image capture module, Digital Image Processing chip, digital signal output modules and the digital I/O interface connected successively, described Gige interface is connected with described camera head 1; Described Digital Image Processing chip is connected with light source control device, base band device and deformation servicing unit respectively; Described digital I/O interface is connected with warning device, display device respectively.
Described camera head 1, it comprises camera lens 2, photoelectric conversion module, the A/D converter connected successively, described photoelectric conversion module, it comprises a plurality of photoelectrical couplers, described A/D converter is connected with described intelligent detection device;
Described light source control device, it comprises coaxial light source control device 3, planar light source control device 5, the light source control device that gathers the fluoroscopic image of battery pole ear 6 fronts, reverse side is coaxial light source control device 3, and the light source control device that gathers the fluoroscopic image of battery pole ear 6 sides is planar light source control device 5; Described light source, it is the LED area source, and described LED area source is connected with light source control device;
Described base band device, it comprises a product base band 12, a pair of upper lower pressure wheel 7, a position adjusting mechanism 8 and the pressure spring 9 connected successively;
Described deformation servicing unit, it comprises that connecting successively a promotion tongue piece 4, promotes tongue piece body 11 and a thrust spring 10.
Beneficial effect of the present invention is:
Detection method provided by the invention and system, employing is integrated with analysis software, and the Digital Image Processing chip of the process software of the mathematical model based on battery pole ear 6 graphic features and gradation of image corresponding relation of gray analysis method in processing based on image and black and white gravity model appoach, to battery pole ear 6 be whether individual layer battery pole ear 6, dimension overproof, bubble or failure welding are analyzed and are processed, and advanced person's machine vision technique applies in the present invention now, makes the lug Non-Destructive Testing.The characteristics such as have measuring accuracy high, measuring speed is fast, practical, simple to operate, and stability is good, simultaneously, also saved more human capital.
The present invention is not limited to above-mentioned embodiment, and the same or similar method of all employings and the present invention and detection system structure realize all technical schemes of the present invention, all in protection domain of the present invention.
Claims (10)
1. the battery pole ear detection method based on machine vision, it is characterized in that: it comprises the steps:
(1) three cover camera heads are set respectively, are used for gathering respectively front, the reverse side of battery pole ear, the fluoroscopic image of side;
(2) the three cover light sources that three cover light source control devices are set respectively and are connected with this device, described light source control device is used for the irradiation brightness of light source is regulated, and makes light source produce a uniform light-emitting area;
(3) base band device of a stable cell lug is set, makes battery pole ear to be measured keep stable when detected position;
(4) a deformation servicing unit is set, makes battery pole ear to be measured produce predetermined deformation;
(5) display device is set, shows current testing result and the fluoroscopic image of the front of the battery pole ear that collects, reverse side, side;
(6) warning device is set, it is defective being used for notifying the current battery pole ear testing result of operator;
(7) intelligent detection device is set, be provided with the Digital Image Processing chip of the process software of an analysis software that is integrated with gray analysis method in processing based on image and black and white gravity model appoach, the mathematical model based on battery pole ear graphic feature and gradation of image corresponding relation in described intelligent detection device, described intelligent detection device is connected with camera head, light source control device, base band device, warning device, display device and deformation servicing unit respectively;
(8) battery pole ear to be measured is placed, opening power, make above-mentionedly respectively to install in running orderly, and described intelligent detection device sends control command to light source control device, opens light source and carries out accommodation, produces a uniform light-emitting area; Send again control command to camera head, gather side, front, the reverse side fluoroscopic image of battery pole ear, and send to intelligent detection device; Described intelligent detection device is analyzed and is processed each frame fluoroscopic image of the battery pole ear that receives, whether the Intelligent Measurement battery pole ear is qualified, if defective, described intelligent detection device sends control command to warning device, the battery pole ear that reacts current is defective, and sends control command to base band device, stops transmitting product, after defective battery pole ear is carried out to mark, then carry out the detection of next battery pole ear; If qualified, proceed the detection of next battery pole ear.
2. the battery pole ear detection method based on machine vision according to claim 1, it is characterized in that: the camera head in described step (1), it comprises camera lens, photoelectric conversion module, the A/D converter connected successively, described photoelectric conversion module, it comprises a plurality of photoelectrical couplers, and described A/D converter is connected with described intelligent detection device.
3. the battery pole ear detection method based on machine vision according to claim 1, it is characterized in that: the light source control device in described step (2), it comprises coaxial light source control device, planar light source control device, the light source control device that gathers the fluoroscopic image of battery pole ear front, reverse side is the coaxial light source control device, and the light source control device that gathers the fluoroscopic image of battery pole ear side is the planar light source control device; Light source in described step (2), it is the LED area source, and described LED area source is connected with light source control device.
4. the battery pole ear detection method based on machine vision according to claim 1, it is characterized in that: the base band device in described step (3), it comprises a product base band, a pair of upper lower pressure wheel, a position adjusting mechanism and the pressure spring connected successively.
5. the battery pole ear detection method based on machine vision according to claim 1 is characterized in that: the deformation servicing unit in described step (4), it comprises that connecting successively a promotion tongue piece, promotes tongue piece body and a thrust spring.
6. the battery pole ear detection method based on machine vision according to claim 1, it is characterized in that: the intelligent detection device in described step (7), it comprises Gige interface, image capture module, Digital Image Processing chip, digital signal output modules and the digital I/O interface connected successively, described Gige interface is connected with the A/D converter of described camera head, described digital I/O interface is connected with warning device, display device respectively, and described Digital Image Processing chip is connected with light source control device, base band device and deformation servicing unit respectively.
7. the battery pole ear detection method based on machine vision according to claim 1, it is characterized in that: described step (8), it specifically comprises the steps:
(81) the product base band that will carry a plurality of battery pole ears places, opening power, described camera head, light source control device, base band device, deformation servicing unit, display device, warning device, intelligent detection device are in running order, described intelligent detection device sends order to the planar light source control device, open the LED area source and carry out adaptive adjustment, described LED area source produces a uniform light-emitting area;
(82) described intelligent detection device sends respectively camera head, the deformation servicing unit of control command to side, the promotion tongue piece of described deformation servicing unit and the acting in conjunction of promotion tongue piece body, battery pole ear to be measured is fixed, again according to the characteristic of battery pole ear to be measured, the thrust spring of deformation servicing unit is set as to a predetermined value, make battery pole ear to be measured produce deformation, the fluoroscopic image that described battery pole ear produces deformation projects on the camera head of side, forms the projected light signal of battery pole ear to be measured;
(83) the projected light signal of battery pole ear to be measured is sent to photoelectric conversion module, because the size of the battery pole ear that each is to be measured is different with feature, the difference that causes image, so the photoelectrical coupler through photoelectric conversion module is converted to strong and weak different electric signal by the projected light signal of battery pole ear to be measured, through A/D converter, be converted to image digital signal again;
(84) described intelligent detection device is through the Gige interface, the image capture module Quick Acquisition is from the image digital signal of camera head, picking rate is per second 60 frames, again through the image processing chip, the image digital signal obtained is analyzed and processed, obtain the graph of relation between the suffered elastic force of battery pole ear and deflection, described intelligent detection device sends it to display device;
(85) graph of relation between the suffered elastic force of battery pole ear obtained according to step (84) and deflection, intelligent decision battery pole ear to be measured is the individual layer battery pole ear, or is the bilayer cells lug;
(86) judge when it is the individual layer battery pole ear, described intelligent detection device sends control command to warning device, the battery pole ear that reacts current is defective, and send control command to base band device, stop transmitting product, after defective battery pole ear is carried out to mark, then carry out the detection of next battery pole ear;
(87) judge when it is the bilayer cells lug, described intelligent detection device sends control command to control device, further detects.
8. the battery pole ear detection method based on machine vision according to claim 7, it is characterized in that: it also comprises the steps:
(88) described intelligent detection device sends order to the coaxial light source control device, opens the LED area source and carries out adaptive adjustment, and described LED area source produces a uniform light-emitting area;
(89) described intelligent detection device sends respectively control command to camera head positive, reverse side, and the fluoroscopic image of described battery pole ear to be measured projects on camera head, forms the projected light signal of battery pole ear to be measured;
(90) the projected light signal of battery pole ear to be measured is sent to photoelectric conversion module, because the size of the battery pole ear that each is to be measured is different with feature, the difference that causes image, so the photoelectrical coupler through photoelectric conversion module is converted to strong and weak different electric signal by the projected light signal of battery pole ear to be measured, through A/D converter, be converted to image digital signal again;
(91) described intelligent detection device is through the Gige interface, the image capture module Quick Acquisition is from the image digital signal of camera head, picking rate is per second 60 frames, again through the image processing chip, the image digital signal obtained is analyzed and processed, obtain the size of three fluoroscopic images of battery pole ear to be measured and the distribution plan of feature, the size and the silhouette position that draw battery pole ear;
(92) size of the battery pole ear obtained according to step (91) and silhouette position, whether the size of intelligent decision battery pole ear is overproof, whether battery pole ear has bubble or battery pole ear failure welding whether;
If there is dimension overproof in battery pole ear, bubble or failure welding problem is arranged, described intelligent detection device sends control command to warning device, the battery pole ear that reacts current is defective, and send control command to base band device, stop transmitting product, after defective battery pole ear is carried out to mark, then carry out the detection of next battery pole ear;
If there is not dimension overproof in battery pole ear, bubble or failure welding problem are arranged, proceed the detection of next battery pole ear.
9. implement the claims the detection system of one of 1～8 described battery pole ear detection method based on machine vision, it is characterized in that: it comprises three cover camera heads, an intelligent detection device, the three cover light source control devices that connect successively, and it also comprises a base band device, a deformation servicing unit, a warning device and a display device; Described intelligent detection device, it comprises Gige interface, image capture module, Digital Image Processing chip, digital signal output modules and the digital I/O interface connected successively, described Gige interface is connected with described camera head; Described Digital Image Processing chip is connected with light source control device, base band device and deformation servicing unit respectively; Described digital I/O interface is connected with warning device, display device respectively.
10. detection system according to claim 9, it is characterized in that: described camera head, it comprises camera lens, photoelectric conversion module, the A/D converter connected successively, described photoelectric conversion module, it comprises a plurality of photoelectrical couplers, and described A/D converter is connected with described intelligent detection device;
Described light source control device, it comprises coaxial light source control device, planar light source control device, the light source control device that gathers the fluoroscopic image of battery pole ear front, reverse side is the coaxial light source control device, and the light source control device that gathers the fluoroscopic image of battery pole ear side is the planar light source control device; Described light source, it is the LED area source, and described LED area source is connected with light source control device;
Described base band device, it comprises a product base band, a pair of upper lower pressure wheel, a position adjusting mechanism and the pressure spring connected successively;
Described deformation servicing unit, it comprises that connecting successively a promotion tongue piece, promotes tongue piece body and a thrust spring.
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