CN-121978013-A - Multi-mode visual detection light source system

CN121978013ACN 121978013 ACN121978013 ACN 121978013ACN-121978013-A

Abstract

The invention discloses a multi-mode visual detection light source system which comprises a mounting plate, wherein a first linear light source is arranged at the upper part of the mounting plate, a second linear light source is arranged on the side surface of the mounting plate, the first linear light source emits light rays of a first color downwards, the second linear light source emits light rays of a second color horizontally to one side, an inclined spectroscope is arranged between the mounting plate and the first linear light source, the light rays of the first color vertically irradiate downwards to the surface of a product to be detected after passing through the inclined spectroscope, the light rays of the second color vertically irradiate downwards to the surface of the product to be detected after being reflected by the inclined spectroscope, an annular light source is arranged at the bottom of the mounting plate, the annular light source obliquely emits light rays of a third color, the light rays of the third color obliquely irradiate to the surface of the product to be detected, and the light rays of the first color, the light rays of the second color and the light rays of the third color are mutually overlapped to irradiate the surface of the product to be detected.

Inventors

DENG JUNGUANG
JIANG ZEJIAN
ZHANG YAFEI
MO JIANGTAO

Assignees

东莞康视达自动化科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260317

Claims (10)

1. The multi-mode visual inspection light source system is characterized by comprising a mounting plate (1), wherein a first linear light source (2) is arranged on the upper portion of the mounting plate (1), the first linear light source (2) emits light rays of a first color downwards, a second linear light source (3) is arranged on the side face of the mounting plate (1), the second linear light source (3) emits light rays of a second color to one side horizontally, an inclined spectroscope (4) is arranged between the mounting plate (1) and the first linear light source (2), the light rays of the first color vertically downwards irradiate the surface of a product (5) to be inspected after passing through the inclined spectroscope (4), the light rays of the second color vertically downwards irradiate the surface of the product (5) to be inspected after being reflected by the inclined spectroscope (4), an annular light source (6) is arranged at the bottom of the mounting plate (1), the light rays of the third color are obliquely emitted to the surface of the product (5) to be inspected, and the light rays of the first color, the light rays of the second color and the light rays of the third color are mutually overlapped to irradiate the surface of the product (5) to be inspected.
2. The multi-mode visual inspection light source system according to claim 1, wherein the first linear light source (2) emits blue light downwards, the first color is blue, the second linear light source (3) emits red light horizontally to one side, the second color is red, the annular light source (6) emits green light obliquely, the third color is green, and the blue light, the red light and the green light are mutually overlapped to irradiate the surface of a product (5) to be inspected.
3. A multi-mode visual inspection light source system as set forth in claim 1, wherein a placement frame (7) for placing an inclined spectroscope (4) is provided on the upper portion of the mounting plate (1), a first linear light source (2) is provided on the upper portion of the placement frame (7), and a second linear light source (3) is provided on the side surface.
4. A multi-mode visual inspection light source system according to claim 3, wherein the placement frame (7) comprises a bottom plate (71) fixedly connected with a mounting plate (1), a left side plate (72) arranged on one side of the bottom plate (71), a right side plate (73) arranged on the other side of the bottom plate (71), a front end plate (74) arranged on one end of the bottom plate (71), a rear end plate (75) arranged on the other end of the bottom plate (71) and a cover plate (76) arranged on the upper parts of the left side plate (72) and the right side plate (73), wherein inclined accommodating grooves (77) for accommodating inclined spectroscopes (4) are formed in the front end plate (74) and the rear end plate (75), and a first accommodating groove (78) for accommodating the side edges of the inclined spectroscopes (4) is formed in the lower part of the left side plate (72).
5. The multi-mode visual inspection light source system as set forth in claim 4, wherein the oblique receiving groove (77) is inclined at an angle of 45 °, the oblique beam splitter (4) is installed inside the oblique receiving groove (77) and is disposed at an angle of 45 °, and the light of the second color emitted by the second linear light source (3) is reflected by the oblique beam splitter (4) and then irradiates the surface of the product (5) to be inspected vertically downward.
6. A multi-mode visual inspection light source system as set forth in claim 4, wherein the cover plate (76) is provided with a first U-shaped accommodating groove (761) for accommodating a first linear light source (2), the cover plate (76) is provided with a first penetrating groove (762) for penetrating light of a first color, the front end plate (74) and the rear end plate (75) are respectively fixed with two ends of the first linear light source (2), the right side plate (73) is provided with a second U-shaped accommodating groove (731) for accommodating a second linear light source (3), the right side plate (73) is provided with a second penetrating groove (732) for penetrating light of a second color, the front end plate (74) and the rear end plate (75) are respectively fixed with two ends of the second linear light source (3), and the bottom plate (71) is provided with a third penetrating groove (711) for penetrating light of the first color and light of the second color.
7. The multi-mode visual inspection light source system according to claim 1, wherein the first linear light source (2) and the second linear light source (3) comprise an outer shell (21), a heat dissipation seat (22) is arranged on the upper portion of the outer shell (21), a PCB light-emitting plate (23), a light-gathering rod (24) and a transparent plate (25) are sequentially arranged inside the outer shell (21), end covers (26) used for limiting the PCB light-emitting plate (23), the light-gathering rod (24) and the transparent plate (25) are further arranged at two ends of the outer shell (21), the PCB light-emitting plate (23) is electrically connected with a first power line, the PCB light-emitting plate (23) is tightly attached to the lower portion of the heat dissipation seat (22), and light rays are emitted out through the light-gathering rod (24) and the transparent plate (25) sequentially.
8. A multi-mode visual inspection light source system as set forth in claim 1, wherein said annular light source (6) comprises a first annular PCB light-emitting plate (61) mounted on the upper part and a second annular PCB light-emitting plate (62) mounted on the lower part, said first annular PCB light-emitting plate (61) and said second annular PCB light-emitting plate (62) are laminated and each emit light of a third color obliquely, said first annular PCB light-emitting plate (61) emits light of a wide angle of 60 ° and said second annular PCB light-emitting plate (62) emits light of a narrow angle of 30 ° outwardly.
9. The multi-mode visual inspection light source system as set forth in claim 8, wherein the annular light source (6) further comprises an annular upper cover (63) arranged at the lower portion of the mounting plate (1), an annular peripheral ring (64) arranged on the side face of the annular upper cover (63) and an annular base (65) arranged at the lower portion of the annular peripheral ring (64), a first annular PCB light-emitting plate (61) is arranged between the annular upper cover (63) and the annular peripheral ring (64), the first annular PCB light-emitting plate (61) is obliquely arranged, the upper portion is limited by a first groove (631) of the annular upper cover (63), the lower portion is limited by a first supporting surface (642) of the annular peripheral ring (64), a second annular PCB light-emitting plate (62) is arranged between the annular peripheral ring (64) and the annular base (65), the second annular PCB light-emitting plate (62) is obliquely arranged, the upper portion is limited by a second groove (641) of the annular peripheral ring (64), and the lower portion is limited by a second supporting surface (651) of the annular base (65).
10. The multi-mode visual inspection light source system according to claim 9, wherein the first annular PCB light-emitting plate (61) is electrically connected with a second power line (66), the second annular PCB light-emitting plate (62) is electrically connected with a third power line (67), a first inclined plane (633) is arranged on the inner side of the annular upper cover (63), a first heat-conducting silica gel (634) is arranged between the first inclined plane (633) and the first annular PCB light-emitting plate (61), a second inclined plane (643) is arranged on the inner side of the annular peripheral ring (64), and a second heat-conducting silica gel (644) is arranged between the second inclined plane (643) and the second annular PCB light-emitting plate (62).

Description

Multi-mode visual detection light source system Technical Field The invention relates to the technical field of detection light source integration, in particular to a multi-mode visual detection light source system. Background In modern industrial automation production systems, the detection capability of machine vision has a decisive influence on product quality control and production efficiency improvement. As one of the core components of the vision system, the performance of the illumination light source directly determines the definition, contrast and signal-to-noise ratio of the acquired image, thereby deeply affecting the accuracy and stability of feature extraction and defect identification in subsequent image processing. At present, when a widely adopted illumination scheme faces a workpiece with a complex structure and various surface characteristics, a plurality of independent light sources are often required to be configured and a camera is triggered to shoot for a plurality of times, so that complete defect information covering different angles and illumination conditions can be obtained. The method not only remarkably increases the detection beat time and reduces the response speed of the system, but also causes the lower integration level and high hardware cost of the whole vision system. In addition, in order to arrange a plurality of independent light sources, the vision equipment must possess sufficient physical space, and the different light sources easily send out the physical shelter from with the light path interference in limited space, are difficult to form the even, controllable compound light field environment of light path of illuminance on work piece surface. Although a plurality of images can be acquired through multiple shooting of a camera, high-precision registration, comparison and fusion analysis of the images are very technical challenges, the operation is complex, the reliability of the algorithm is difficult to ensure, and the overall stability and accuracy of defect detection can be affected finally. Disclosure of Invention The invention aims to overcome the defects of low detection efficiency and low system integration level in the prior art, and provides a multi-mode visual detection light source system which synchronously provides multi-angle and multi-spectrum illumination information in one exposure, has a compact structure and realizes high-efficiency, high-precision and high-adaptability visual detection. In order to achieve the above object, the invention provides a multi-mode vision detection light source system, which comprises a mounting plate, wherein a first linear light source is arranged at the upper part of the mounting plate, the first linear light source emits light rays of a first color downwards, a second linear light source is arranged on the side surface of the mounting plate, the second linear light source emits light rays of a second color horizontally to one side, an inclined spectroscope is arranged between the mounting plate and the first linear light source, the light rays of the first color vertically irradiate downwards to the surface of a product to be detected after passing through the inclined spectroscope, the light rays of the second color vertically irradiate downwards to the surface of the product to be detected after being reflected by the inclined spectroscope, an annular light source is arranged at the bottom of the mounting plate, the annular light source emits light rays of a third color obliquely, and the light rays of the third color obliquely irradiate to the surface of the product to be detected, and the light rays of the first color, the light rays of the second color and the light rays of the third color are mutually overlapped to irradiate the surface of the product to be detected. Preferably, the first linear light source emits blue light downwards, the first color is blue, the second linear light source emits red light horizontally to one side, the second color is red, the annular light source emits green light obliquely, the third color is green, and the blue light, the red light and the green light are mutually overlapped to irradiate the surface of the product to be detected. Preferably, a placing frame body for placing the inclined spectroscope is arranged on the upper portion of the mounting plate, a first linear light source is arranged on the upper portion of the placing frame body, and a second linear light source is arranged on the side face of the placing frame body. Preferably, the placement frame body comprises a bottom plate fixedly connected with the mounting plate, a left side plate arranged on one side of the bottom plate, a right side plate arranged on the other side of the bottom plate, a front end plate arranged at one end of the bottom plate, a rear end plate arranged at the other end of the bottom plate and a cover plate arranged on the upper parts of the left side plate and the right side plate, wh