CN111307811A - A machine vision-based parts inspection device - Google Patents
A machine vision-based parts inspection device Download PDFInfo
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- CN111307811A CN111307811A CN201811507678.3A CN201811507678A CN111307811A CN 111307811 A CN111307811 A CN 111307811A CN 201811507678 A CN201811507678 A CN 201811507678A CN 111307811 A CN111307811 A CN 111307811A
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- definition camera
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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
- G01N21/8851—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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- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a part detection device based on machine vision, belonging to the field of part detection; the machine vision-based part detection device comprises: the conveying mechanism is provided with a conveying belt, the conveying belt is arranged on a driving wheel, the conveying belt is provided with fixed blocks, a groove is formed between every two adjacent fixed blocks, and the groove is used for placing a part to be detected; the detection mechanism is provided with a top plate, a second high-definition camera is arranged at the lower end of the top plate, the lower end of the second high-definition camera is opposite to the groove, and first high-definition cameras are arranged on two sides of the top plate; a spare part detection device based on machine vision structural design is reasonable, and the practicality is strong, detection effect is quick accurate, and it makes a round trip to slide about promoting first high definition camera device through electric telescopic handle in addition, has increased the detection area to the spare part, has enlarged the viewing scope, is worth promoting and using in spare part detection area.
Description
Technical Field
The invention relates to the field of part detection, in particular to a part detection device based on machine vision.
Background
With the development of science and technology, machines gradually replace human beings and become the mainstream of industrial development. For delicate small components in the mobile phone, medical, automotive, etc. industries, any minor blemish may cause consumer dissatisfaction and complaints. In the mass industrial production of small parts, the phenomena of material error, material mixing, product defects and the like inevitably occur, so that the detection is needed.
Patent application document No. CN206038551U provides a part detection device based on machine vision, which uses a machine instead of a manual work by adopting a mode of combining a movable device, a machine vision device, a computer and a barcode printer, so as to avoid the problems of easy fatigue, easy manual interference and high cost of the manual work, but the detection device also has certain defects, for example, the device is too complex and the installation is more troublesome.
In view of the above problems in the background art, the present invention is directed to a component inspection apparatus based on machine vision.
Disclosure of Invention
The present invention is directed to a component inspection apparatus based on machine vision to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a machine vision-based part inspection apparatus, comprising: the conveying mechanism is provided with a conveying belt, the conveying belt is mounted on a driving wheel, fixing blocks are arranged on the conveying belt, a groove is formed between every two adjacent fixing blocks, the groove is used for placing a part to be detected, and the part to be detected placed in the groove is detected by the detection mechanism in the process that the part to be detected moves along with the conveying belt; the drive wheel lower extreme is equipped with the supporting leg, and the supporting leg lower extreme is connected with the seatpad, and the seatpad has promoted stability when the spare part detection device based on machine vision operates.
The detection mechanism is provided with a top plate, the lower end of the top plate is provided with 6 second high-definition camera devices, the lower ends of the second high-definition camera devices are opposite to the grooves, and the second high-definition camera devices are used for detecting parts placed in the grooves; the two sides of the top plate are provided with first high-definition camera devices, and the functions of the first high-definition camera devices are the same as those of the second high-definition camera devices; the upper end of the first high-definition camera device is fixedly connected with the sliding block, a sliding groove is formed between the sliding block and the top plate, the lower end of the sliding block is provided with a roller, the roller is placed in the sliding groove, and the sliding block slides back and forth in the sliding groove through the roller; one side of the sliding block is connected with an electric telescopic rod, a compression spring is arranged above and below the electric telescopic rod, one end of the compression spring is connected with the sliding block through a fixing ring, the other end of the compression spring is fixedly installed on an energy supply device through a fixing block, the upper end of the energy supply device is provided with a connecting column, and the connecting column can enable the whole detection mechanism to be fixedly connected onto other devices; the energy supply device is the prior art and is not further described herein; the energy supply device supplies energy, the first high-definition camera device is pushed by the electric telescopic rod to slide back and forth left and right, the detection area of parts is increased, and the inspection range is expanded; in the process, the compression spring helps to reduce the speed of the first high-definition camera device moving left and right, the detection time is prolonged, and the detection effect is improved.
As a further scheme of the invention: the first high-definition camera device structure is the same as the second high-definition camera device structure, the first high-definition camera device is composed of an industrial camera, an image PCI acquisition card, a microprocessor and a display, and the working principle is as follows: the method comprises the steps of using fluorescent tube lighting equipment to irradiate the surface of a part to be detected in a certain direction, then using a CCD camera to scan the surface of an object, inputting an obtained image signal into a computer, extracting relevant characteristic parameters of surface defects in an image after image preprocessing, edge detection of a defect area and other image processing, and then carrying out defect image identification so as to judge whether the defects exist and the type information of the defects.
Compared with the prior art, the invention has the beneficial effects that:
a spare part detection device based on machine vision structural design is reasonable, spare part is placed in the recess, the conveyer belt rotates through the drive wheel and drives the spare part in the recess and impel forward, propulsive in-process forward, second high definition camera device detects the spare part in the recess, can also remove first high definition camera device as required and detect the spare part.
A spare part detection device based on machine vision structural design is reasonable, and the practicality is strong, detection effect is quick accurate, and it makes a round trip to slide about promoting first high definition camera device through electric telescopic handle in addition, has increased the detection area to the spare part, has enlarged the viewing scope, is worth promoting and using in spare part detection area.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of a component detection device based on machine vision.
Fig. 2 is a block diagram of a first high-definition camera of a component detection device based on machine vision.
Fig. 3 is a schematic structural diagram of an embodiment 2 of a component detection device based on machine vision.
In the figure: 1-seat cushion, 2-supporting legs, 3-driving wheels, 4-conveying belts, 5-fixing blocks, 6-grooves, 7-first high-definition camera device, 8-top plate, 9-sliding groove, 10-roller, 11-sliding block, 12-fixing ring, 13-compression spring, 14-electric telescopic rod, 15-fixing block, 16-connecting column, 17-energy supply device, 18-second high-definition camera device, 19-display, 20-industrial camera, 21-image PCI acquisition card, 22-microprocessor, 23-ground anchor and 24-hole.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
Example 1
Referring to fig. 1-2, in embodiment 1 of the present invention, a component detecting apparatus based on machine vision includes: the conveying mechanism is provided with a conveying belt 4, the conveying belt 4 is installed on the driving wheel 3, fixing blocks 5 are arranged on the conveying belt 4, grooves 6 are formed between every two adjacent fixing blocks 5, parts to be detected are placed in the grooves 6, and the parts to be detected placed in the grooves 6 are detected through the detection mechanism in the process that the parts to be detected move along with the conveying belt 4; 3 lower extremes of drive wheel are equipped with supporting leg 2, and 2 lower extremes of supporting leg are connected with seatpad 1, and seatpad 1 has promoted stability when the spare part detection device based on machine vision operates.
The detection mechanism is provided with a top plate 8, the lower end of the top plate 8 is provided with second high-definition camera devices 18, the number of the second high-definition camera devices 18 is 6, the lower ends of the second high-definition camera devices 18 are opposite to the grooves 6, and the second high-definition camera devices 18 are used for detecting parts placed in the grooves 6; the two sides of the top plate 8 are provided with first high-definition camera devices 7, and the functions of the first high-definition camera devices 7 are the same as those of the second high-definition camera devices 18; the upper end of the first high-definition camera device 7 is fixedly connected with a sliding block 11, a sliding groove 9 is formed between the sliding block 11 and the top plate 8, a roller 10 is arranged at the lower end of the sliding block 11, the roller 10 is placed in the sliding groove 9, and the sliding block 11 slides back and forth in the sliding groove 9 through the roller 10; one side of the sliding block 11 is connected with an electric telescopic rod 14, a compression spring 13 is arranged above and below the electric telescopic rod 14, one end of the compression spring 13 is connected with the sliding block 11 through a fixing ring 12, the other end of the compression spring 13 is fixedly installed on an energy supply device 17 through a fixing block 15, a connecting column 16 is arranged at the upper end of the energy supply device 17, and the connecting column 16 can enable the whole detection mechanism to be fixedly connected with other devices; the energy supply device 17 is prior art and will not be further described herein; the energy supply device 17 supplies energy, the first high-definition camera device 7 is pushed by the electric telescopic rod 14 to slide back and forth left and right, the detection area of parts is increased, and the inspection range is expanded; in the process, the compression spring 13 helps to reduce the speed of the first high-definition camera device 7 moving left and right, so that the detection time is prolonged, and the detection effect is improved.
Further, the first high-definition camera 7 has the same structure as the second high-definition camera 18, the first high-definition camera 7 is composed of an industrial camera 20, an image PCI capture card 21, a microprocessor 22 and a display 19, and the working principle is as follows: the method comprises the steps of using fluorescent tube lighting equipment to irradiate the surface of a part to be detected in a certain direction, then using a CCD camera to scan the surface of an object, inputting an obtained image signal into a computer, extracting relevant characteristic parameters of surface defects in an image after image preprocessing, edge detection of a defect area and other image processing, and then carrying out defect image identification so as to judge whether the defects exist and the type information of the defects.
Example 2
Referring to fig. 3, in embodiment 2 of the present invention, a seat cushion 1 of embodiment 2 is provided with an opening 24, a ground anchor 23 is inserted into the opening 24, the rest of the structure of embodiment 2 is the same as that of embodiment 1, and compared with embodiment 1, embodiment 2 is superior to embodiment 1 in stability during operation and vibration generated on the ground surface.
Comparative example
The detection work of small-size spare part among the prior art is mostly accomplished by the manual work, and manual detection is not only inefficiency, and people's mood change easily influences work moreover, leads to spare part detection effect not good.
The working principle of the invention is as follows: spare part is placed in recess 6, and conveyer belt 4 rotates through drive wheel 3 and drives the spare part in the recess 6 and impel forward, and the in-process of impelling forward, second high definition camera device 18 detects the spare part in the recess 6, can also remove first high definition camera device 7 as required and detect the spare part, a spare part detection device based on machine vision structural design reasonable, the practicality is strong, and detection effect is quick accurate, and it makes a round trip to slide about promoting first high definition camera device 7 through electric telescopic handle 14 in addition, has increased the detection area to the spare part, has enlarged the viewing scope, is worth promoting and using in the spare part detection area.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507678.3A CN111307811A (en) | 2018-12-11 | 2018-12-11 | A machine vision-based parts inspection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507678.3A CN111307811A (en) | 2018-12-11 | 2018-12-11 | A machine vision-based parts inspection device |
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| CN111307811A true CN111307811A (en) | 2020-06-19 |
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| CN201811507678.3A Pending CN111307811A (en) | 2018-12-11 | 2018-12-11 | A machine vision-based parts inspection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948216A (en) * | 2020-08-19 | 2020-11-17 | 湖北工业大学 | Positioning device based on machine vision |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207894845U (en) * | 2018-03-14 | 2018-09-21 | 衢州学院 | A kind of parts detection device based on machine vision |
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- 2018-12-11 CN CN201811507678.3A patent/CN111307811A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207894845U (en) * | 2018-03-14 | 2018-09-21 | 衢州学院 | A kind of parts detection device based on machine vision |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948216A (en) * | 2020-08-19 | 2020-11-17 | 湖北工业大学 | Positioning device based on machine vision |
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Application publication date: 20200619 |