CN114577721A - Product detection device and method based on machine vision - Google Patents
Product detection device and method based on machine vision Download PDFInfo
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- CN114577721A CN114577721A CN202210207912.0A CN202210207912A CN114577721A CN 114577721 A CN114577721 A CN 114577721A CN 202210207912 A CN202210207912 A CN 202210207912A CN 114577721 A CN114577721 A CN 114577721A
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
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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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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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
- G01N2021/8841—Illumination and detection on two sides of object
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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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The invention provides a product detection device and a detection method based on machine vision, belonging to the field of material supply and image detection of intelligent detection equipment; the device comprises a transfer module, an image detection module, an adjustment module, a rack module and a measurement control module; through the scheme of this application, the segmentation diversion feed of same product has improved whole feed efficiency, and diversified image acquisition has improved detection efficiency and product quality's assurance through image processing algorithm, but the wide application is supplied with and detects in the automatic detection of 3C product etc. and the material of processing.
Description
Technical Field
The invention belongs to the field of material supply and image detection of intelligent detection equipment, and particularly relates to a product detection device and a detection method based on machine vision, which can be widely applied to automatic detection of 3C products and the like and material detection in processing.
Background
In the process of processing or assembling information appliances, namely 3C products (Computer, Communication and Consumer Electronics), the precision requirement is high, and the conventional automatic, semi-automatic or manual assembly cannot meet the current precision requirement.
Machine vision is to use a robot to replace human eyes for detection and judgment, specifically, a shot target is converted into image data through an image sensor and transmitted to a special image processing system, the image processing system performs various operations on the image data to extract the characteristics of the target, and then the on-site equipment action is controlled according to the judgment result.
Therefore, the present application is expected to integrate machine vision into the assembly process of 3C products, such as the assembly process of the frame and the cover plate (back plate, glass cover plate, etc.) of the 3C products, in order to improve the processing or assembly precision, and improve the work efficiency and the yield.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, the present invention provides a product inspection device and an inspection method based on machine vision, which can solve the above problems.
A product detection device based on machine vision comprises a transfer module, an image detection module, an adjustment module, a rack module and a measurement control module;
the transfer module is arranged on the rack module along the direction of a detection streamline and is used for streamline transfer supply of a product to be detected;
the image detection module is arranged at the periphery of the transfer module along the direction of a detection streamline and connected to the rack module for carrying out image acquisition on the product on the transfer module;
the adjusting module is arranged above the transferring module and used for adjusting the space posture of the product on the transferring module so as to facilitate the image detection module to acquire images of different positions of the product to be detected;
the measurement control module is arranged on the rack module and used for carrying out drive control on the moving and carrying module and the adjusting module, image acquisition drive control on the image detection module and image transmission processing and judgment.
The invention also discloses a detection method based on machine vision, which comprises the following steps:
s1, front-section feeding: loading the product to a front loading platform, and driving and transferring the product to a front image detection position of the product in a first attitude direction by a front moving plate;
s2, acquiring front images: the front image mechanism or the front image mechanism and the outer image mechanism positioned at the front image detection position are used for carrying out image acquisition on the product and transmitting the image acquisition to the measurement control module to carry out image processing and quality judgment;
s3, material turning: the front moving plate drives the product forwards to a turning station, and the product on the front loading platform is picked up, lifted, rotated and turned to a second posture direction by the adjusting module; the front moving plate drives the front carrying platform to return, and meanwhile, the rear moving plate drives the rear carrying platform to move to a steering station; the adjusting module descends and releases the turned product onto the rear carrier to realize the adjustment of the space posture of the product to be detected;
s4, rear-section feeding: the rear moving plate drives the rear carrying platform to send the product to a rear image detection position;
s5, acquiring a rear image: the rear image mechanism or the rear image mechanism and the outer image mechanism positioned at the rear image detection position are used for carrying out image acquisition on the product and transmitting the image acquisition to the measurement control module to carry out image processing and quality judgment;
s6, blanking: and the blanking equipment transfers the product with the acquired rear image to the next station to finish blanking.
Compared with the prior art, the invention has the beneficial effects that: by the detection equipment and the detection method, multi-angle image acquisition of the same product can be realized, material supply is divided into a front section and a rear section, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a machine vision-based product inspection apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a transfer module;
FIG. 3 is a schematic view of a part of the structure of the detecting device;
FIG. 4 is a top view of a detection device with product detection flow indicators;
FIG. 5 is a flow chart of the detection method.
In the figure:
100. a transfer module;
101. a motor base plate assembly;
102. moving the movable plate forwards;
103. moving the plate backwards;
104. a front-loading stage;
105. a rear carrying platform;
106. positioning the grating;
107. an end stop buffer assembly;
200. an image detection module;
201. a front image mechanism;
202. a rear image mechanism;
203. an outer image mechanism;
300. an adjusting module;
400. a rack module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Detection device
A product inspection apparatus based on machine vision, referring to fig. 1-4, the apparatus includes a transferring module 100, an image inspecting module 200, an adjusting module 300, a rack module 400 and a measurement control module (not shown).
The transfer module 100 is disposed on the rack module 400 along the detection flow line direction, and is used for the flow line transfer and supply of the product to be detected.
Specifically, the transfer module 100 includes a motor base plate assembly 101, a front transfer plate 102, a rear transfer plate 103, a front stage 104, a rear stage 105, a positioning grating 106, and an end stop buffer assembly 107.
Connection relation: the motor bottom plate assembly 101 adopts a front-back independent dual-driver mechanism to respectively provide driving force for a front moving plate 102 and a back moving plate 103 which are arranged on the motor bottom plate assembly; the front stage 104 is mounted on the front moving plate 102, and the rear stage 105 is mounted on the rear moving plate 103 and is respectively used for carrying materials at different front and rear spatial positions; the positioning gratings 106 are arranged on the side of the motor base plate assembly 101 and used for positioning the front and rear carrying stages; the end stop buffer assemblies 107 are arranged at two ends of the motor base plate assembly 101 and used for buffering and stopping limiting the front and rear carrying stages.
In the transfer module 100 of the present invention, the front stage 104 and the rear stage 105 can load and transfer two products to be tested at the same time, that is, can transfer and detect two products to be tested at the same time, which improves the work efficiency. The specific structure of the front stage 104 and the rear stage 105 is not specifically described here, as long as the product can be held and positioned.
The image detection module 200 is disposed around the transfer module 100 along the detection flow line direction, and is connected to the rack module 400 for performing image acquisition on the product transferred on the transfer module 100.
Connection relation: the image detection module 200 includes a front image mechanism 201 and a rear image mechanism 202 arranged in front and behind along the detection flow direction, where the front image mechanism 201 is used for image acquisition of the product to be detected on the front stage 104 in one direction, and the rear image mechanism 202 is used for image acquisition of the product to be detected on the rear stage 105 in another direction.
Further, the image detection module 200 further includes an outer image mechanism 203 for collecting an image of an outer side of the product to be detected.
The outer image mechanism 203 is fixedly arranged at the outer side of the motor base plate assembly 101 and is fixedly arranged or slidably arranged. The arrangement direction is as follows: the image collecting direction of the outer side image mechanism 203 is perpendicular to the detecting flow direction of the motor base plate assembly 101, and of course, the image collecting direction of the outer side image mechanism 203 and the detecting flow direction of the motor base plate assembly 101 may be inclined to form an included angle according to the detecting point of the product.
Specifically, for the fixed setting mode, the outer side image mechanism 203 is set corresponding to the detection station of the front stage 104 and/or the rear stage 105 (including the dead-end and oblique equal arrangement modes, as long as the image acquisition direction is satisfied, and the detection station is projected to the to-be-detected site of the to-be-detected product); that is, according to the actual detection demand, can set up an outside image mechanism 203, also can set up two outside image mechanisms 203, can establish at the anterior segment, also can establish at the back end, and the person is decided according to the required different detection site of different products, should arrange to the product adaptability that awaits measuring of different models.
Alternatively, corresponding to the sliding arrangement mode and products with different detection site requirements, one of the outer side imaging mechanisms 203 may be provided, and the outer side imaging mechanism 203 is slidably arranged on the outer side of the motor base plate assembly 101 along the detection flow direction and slides between the detection stations of the front stage 104 and the rear stage 105 to capture images of the outer side of the product to be detected on the front stage 104 and the rear stage 105.
The adjusting module 300 is disposed above the transferring module 100, and is used for adjusting the spatial attitude of the product on the transferring module 100, so that the image detecting module 200 collects images of different positions of the product to be detected. The arrangement relationship is as follows: the adjusting module 300 is arranged between the front image mechanism 201 and the back image mechanism 202; the functions are as follows: the product on the front carrier 104 is picked up, lifted, rotated, lowered and released onto the rear carrier 105, so that the spatial posture of the product to be measured is adjusted.
For the structure of the adjusting module 300, modes such as motor driving, pneumatic driving and the like can be adopted, as long as the picking, lifting, rotating and releasing of the product to be detected can be realized. For the condition of precise adjustment, a precise sliding table can be added for fine adjustment of the angle and the position.
The measurement control module is disposed on the rack module 400, and is used for driving and controlling the transfer module 100 and the adjustment module 300, collecting and controlling the image of the image detection module 200, and transmitting, processing and determining the image. The rack module 400 should at least include an information transmission unit, a driving unit, an acquisition control unit, an image processing unit, a quality determination unit, and a display alarm unit, as long as the related functions can be completed, and will not be described in detail herein.
Detection method
A machine vision based detection method, see fig. 5 and 4, the method comprising:
s1, front-section feeding: loading the product onto the front loading platform 104, and driving and transferring the product to a front image detection position with the product in a first attitude direction by the front moving plate 102;
s2, acquiring front images: the front image mechanism 201 or the front image mechanism 201 and the outer image mechanism 203 located at the front image detection position carry out image acquisition on the product, and transmit the image acquisition to the measurement control module to carry out image processing and quality judgment;
s3, material turning: the front moving plate 102 drives the product forwards to the turning station, and the adjusting module 300 picks up, lifts and rotates the product on the front carrier 104 to change the direction of the product into a second posture direction; the front moving plate 102 drives the front carrier 104 to return, and the rear moving plate 103 drives the rear carrier 105 to move to the steering station; the adjusting module 300 descends and releases the product after turning to the rear carrier 105, so as to adjust the spatial attitude of the product to be measured;
s4, rear-section feeding: the rear moving plate 103 drives the rear carrying platform 105 to send the product to a rear image detection position;
s5, acquiring a rear image: the rear image mechanism 202 or the rear image mechanism 202 and the outer image mechanism 203 positioned at the rear image detection position carry out image acquisition on the product, and transmit the image acquisition to the measurement control module to carry out image processing and quality judgment;
s6, blanking: and the blanking equipment transfers the product with the acquired rear image to the next station to finish blanking.
The steps are carried out for detecting the single material, and the steps S1-S6 are repeatedly executed, so that the continuous feeding, detecting and discharging of the product can be realized until the detection task is completely finished.
In one specific example, the method is applied to a frame of a 3C consumer product, such as a mobile phone, a pad, a notebook middle frame and a cover plate, and detects whether a glue overflow defect or a glue shortage defect occurs in a gluing (gluing/dispensing) process.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A product detection device based on machine vision, its characterized in that: the device comprises a transfer module (100), an image detection module (200), an adjustment module (300), a rack module (400) and a measurement control module;
the transfer module (100) is arranged on the rack module (400) along the direction of a detection streamline and is used for streamline transfer supply of a product to be detected;
the image detection module (200) is arranged at the periphery of the transfer module (100) along the detection streamline direction, is connected to the rack module (400) and is used for carrying out image acquisition on the product on the transfer module (100);
the adjusting module (300) is arranged above the transferring module (100) and is used for adjusting the space posture of the product on the transferring module (100) so that the image detecting module (200) can conveniently acquire images of different positions of the product to be detected;
the measurement control module is arranged on the rack module (400) and used for carrying out drive control on the transfer module (100) and the adjusting module (300), image acquisition drive control on the image detection module (200) and transmission processing and judgment of images.
2. The product detection device of claim 1, wherein: the transfer module (100) comprises a motor bottom plate assembly (101), a front moving plate (102), a rear moving plate (103), a front carrying table (104), a rear carrying table (105), a positioning grating (106) and an end stop buffer assembly (107); the motor bottom plate assembly (101) adopts a front-back independent double-driver mechanism and respectively provides driving force for a front moving plate (102) and a back moving plate (103) which are arranged on the motor bottom plate assembly; the front carrying platform (104) is arranged on the front moving plate (102), and the rear carrying platform (105) is arranged on the rear moving plate (103) and is respectively used for carrying materials at different front and rear spatial positions; the positioning gratings (106) are arranged on the side edge of the motor bottom plate assembly (101) and are used for positioning the front and rear carrying platforms; the end stop buffer assemblies (107) are arranged at two ends of the motor bottom plate assembly (101) and used for buffering and stopping limit of the front and rear carrying platforms.
3. The product detection device of claim 2, wherein: the image detection module (200) comprises a front image mechanism (201) and a rear image mechanism (202) which are arranged in a front-back mode along a detection flow direction, wherein the front image mechanism (201) is used for image acquisition of a product to be detected on the front carrier (104) in one direction, and the rear image mechanism (202) is used for image acquisition of the product to be detected on the rear carrier (105) in the other direction.
4. The product detection device according to claim 1 or 3, characterized in that: the image detection module (200) further comprises an outer side image mechanism (203) for collecting images on the outer side of the product to be detected.
5. The product detection device of claim 4, wherein: and the outer side image mechanism (203) is arranged right opposite to the detection station of the front carrying platform (104) and/or the rear carrying platform (105).
6. The product detection device of claim 4, wherein: and the outer side image mechanism (203) is arranged on the outer side of the motor base plate assembly (101) in a sliding manner along the detection flow direction and slides between the detection stations of the front stage (104) and the rear stage (105) so as to acquire images of the outer side edges of the products to be detected on the front stage (104) and the rear stage (105).
7. The product detection device of claim 3, wherein: the adjusting module (300) is arranged between the front image mechanism (201) and the rear image mechanism (202) and used for picking up, lifting, rotating, descending and releasing products on the front carrier (104) onto the rear carrier (105) to realize adjustment of the spatial attitude of the products to be measured.
8. A machine vision based inspection method, the method comprising:
s1, front-section feeding: loading the product to a front loading platform (104), and driving and transferring the product to a front image detection position with the product in a first attitude direction by a front moving plate (102);
s2, acquiring front images: the front image mechanism (201), or the front image mechanism (201) and the outer image mechanism (203) positioned at the front image detection position are used for carrying out image acquisition on the product and transmitting the image to the measurement control module for image processing and quality judgment;
s3, material turning: the front moving plate (102) drives the product forwards to the steering station, and the adjusting module (300) picks up, lifts and rotates the product on the front carrying platform (104) to change the direction of the product into a second posture direction; the front moving plate (102) drives the front carrying platform (104) to return, and the rear moving plate (103) drives the rear carrying platform (105) to move to the steering station; the adjusting module (300) descends the turned product and releases the turned product onto the rear carrier (105);
s4, rear-section feeding: the rear moving plate (103) drives the rear carrier (105) to convey the product to a rear image detection position;
s5, acquiring a rear image: the rear image mechanism (202) or the rear image mechanism (202) and an outer image mechanism (203) positioned at the rear image detection position are used for carrying out image acquisition on the product and transmitting the image acquisition to the measurement control module to carry out image processing and quality judgment;
s6, blanking: and the blanking equipment transfers the product with the acquired rear image to the next station to finish blanking.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210207912.0A CN114577721A (en) | 2022-03-03 | 2022-03-03 | Product detection device and method based on machine vision |
| CN202222950206.3U CN218766583U (en) | 2022-03-03 | 2022-11-07 | Product detection device based on machine vision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210207912.0A CN114577721A (en) | 2022-03-03 | 2022-03-03 | Product detection device and method based on machine vision |
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| CN114577721A true CN114577721A (en) | 2022-06-03 |
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| CN202210207912.0A Withdrawn CN114577721A (en) | 2022-03-03 | 2022-03-03 | Product detection device and method based on machine vision |
| CN202222950206.3U Active CN218766583U (en) | 2022-03-03 | 2022-11-07 | Product detection device based on machine vision |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222950206.3U Active CN218766583U (en) | 2022-03-03 | 2022-11-07 | Product detection device based on machine vision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193727A (en) * | 2022-07-18 | 2022-10-18 | 苏州天准科技股份有限公司 | Double-shaft motion platform |
| CN115213111A (en) * | 2022-07-18 | 2022-10-21 | 苏州天准科技股份有限公司 | Online double-sided detection system and IC carrier plate double-sided detection method |
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| WO2014040502A1 (en) * | 2012-09-12 | 2014-03-20 | 深圳深蓝精机有限公司 | Measurement device and shaft detection device |
| CN205785090U (en) * | 2016-04-12 | 2016-12-07 | 东莞市沃德精密机械有限公司 | The detection equipment of the assembly clearance of handset front case and Mobile phone screen |
| CN109406538A (en) * | 2018-12-27 | 2019-03-01 | 银河水滴科技（北京）有限公司 | Cell phone appearance detection system |
| CN111530779A (en) * | 2020-06-17 | 2020-08-14 | 深圳市至臻视界科技有限公司 | Universal machine vision detection equipment and product surface defect detection method thereof |
| CN112268911A (en) * | 2020-10-28 | 2021-01-26 | 苏州鑫富力劲自动化设备有限公司 | Mobile phone AOI detection equipment |
| CN113777039A (en) * | 2021-09-14 | 2021-12-10 | 苏州天准科技股份有限公司 | Visual inspection device |
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2022
- 2022-03-03 CN CN202210207912.0A patent/CN114577721A/en not_active Withdrawn
- 2022-11-07 CN CN202222950206.3U patent/CN218766583U/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014040502A1 (en) * | 2012-09-12 | 2014-03-20 | 深圳深蓝精机有限公司 | Measurement device and shaft detection device |
| CN205785090U (en) * | 2016-04-12 | 2016-12-07 | 东莞市沃德精密机械有限公司 | The detection equipment of the assembly clearance of handset front case and Mobile phone screen |
| CN109406538A (en) * | 2018-12-27 | 2019-03-01 | 银河水滴科技（北京）有限公司 | Cell phone appearance detection system |
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| CN112268911A (en) * | 2020-10-28 | 2021-01-26 | 苏州鑫富力劲自动化设备有限公司 | Mobile phone AOI detection equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193727A (en) * | 2022-07-18 | 2022-10-18 | 苏州天准科技股份有限公司 | Double-shaft motion platform |
| CN115213111A (en) * | 2022-07-18 | 2022-10-21 | 苏州天准科技股份有限公司 | Online double-sided detection system and IC carrier plate double-sided detection method |
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| Publication number | Publication date |
|---|---|
| CN218766583U (en) | 2023-03-28 |
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