Multidirectional detection light source and multidirectional detection device

Abstract

The utility model relates to the technical field of light sources used for machine vision detection, and discloses a multidirectional detection light source and a multidirectional detection device.The multidirectional detection light source comprises a shell, a detection cavity used for containing a detected object is formed in the shell, an upper plane light-emitting area is arranged at the top of the detection cavity, and a lower plane light-emitting area is arranged at the bottom of the upper plane light-emitting area. The bottom of the detection cavity is provided with a lower plane light-emitting area, the side part of the detection cavity is provided with a cambered surface light-emitting area, one end of the cambered surface light-emitting area is connected with the upper plane light-emitting area, and the other end of the cambered surface light-emitting area is connected with the lower plane light-emitting area; the multidirectional detection device comprises a camera, a transparent supporting piece and the multidirectional detection light source, the supporting piece extends into the detection cavity, and the camera is arranged outside the multidirectional detection light source; the bottle-shaped object visual detection device mainly solves the technical problem of how to improve the detection efficiency, reduce the cost and reduce the occupied space under the requirement of visual detection of bottle-shaped objects.

Description

Technical Field

[0001] This utility model relates to the technical field of light sources for machine vision inspection, and in particular to a multi-directional inspection light source and a multi-directional inspection device. Background Technology

[0002] With the rapid development of automation, there is an increasing demand for efficient detection of defects on object surfaces using machine vision. Taking the appearance inspection of bottle-shaped objects as an example, current inspection systems generally require three stations. Specifically, each station is equipped with a corresponding camera and light source. The light source at the first station illuminates the top of the bottle-shaped object, the light source at the second station illuminates the bottom, and the light source at the third station illuminates the curved side. This three-station inspection layout not only occupies a large space, but also requires transportation time to move the bottle-shaped object to each station, resulting in relatively low inspection efficiency. Furthermore, the total cost of the three light sources is also high. Therefore, improvements to existing technologies are necessary. Utility Model Content

[0003] This utility model provides a multi-directional detection light source and a multi-directional detection device, which mainly solves the technical problems of how to improve detection efficiency, reduce costs and minimize space occupation when facing the visual detection needs of bottle-shaped objects.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A multi-directional detection light source includes a housing, an internal detection cavity for accommodating an object to be detected, an upper planar light-emitting area at the top of the detection cavity, a lower planar light-emitting area at the bottom of the detection cavity, and an arc-shaped light-emitting area on the side of the detection cavity. One end of the arc-shaped light-emitting area is connected to the upper planar light-emitting area, and the other end of the arc-shaped light-emitting area is connected to the lower planar light-emitting area.

[0006] In one of the technical solutions, the cavity wall of the detection cavity includes an upper flat wall, a lower flat wall, and a side arc wall. The upper flat wall and the lower flat wall are arranged opposite each other in the longitudinal direction, and the upper flat wall is located above the lower flat wall. One end of the side arc wall is connected to the upper flat wall, and the other end of the side arc wall is connected to the lower flat wall. A lamp plate is fixed on the upper flat wall, the lower flat wall, and the side arc wall.

[0007] In one of the technical solutions, the multi-directional detection light source further includes a diffuser plate, which simultaneously covers the lamp plate on the upper plane wall, the lower plane wall, and the side arc wall.

[0008] In one of the technical solutions, the side arc wall is semi-circular in shape.

[0009] In one of the technical solutions, the outer wall of the housing is provided with a first opening and a second opening, the first opening and the second opening are arranged opposite to each other and both extend into the detection cavity.

[0010] This application also provides a multi-directional detection device, including a camera, a support member, and a multi-directional detection light source as described in any of the above technical solutions. The support member extends into the detection cavity, and the top surface of the support member is used for placing the object to be detected. The support member is transparent. The camera is fixed outside the multi-directional detection light source and is used to acquire an image of the object to be detected located on the support member.

[0011] In one of the technical solutions, the multi-directional detection device further includes a conveying device, which includes the support member, which is a transparent conveyor belt. The conveyor belt extends into the first opening and extends outward from the second opening.

[0012] In one of the technical solutions, the light emission direction of the upper plane light emission area, the light emission direction of the lower plane light emission area, and the light emission direction of the arc surface light emission area are all perpendicular to the transport direction of the conveyor belt.

[0013] Compared with the prior art, the multi-directional detection light source provided by this utility model has at least the following beneficial effects:

[0014] The curved surface of the internal side of the detection light source in this solution provides arc-shaped illumination, suitable for machine vision inspection of curved areas on the sides of products. The upper and lower surface illumination areas provide planar illumination, suitable for machine vision inspection of the upper or lower surface features of products. Therefore, this detection light source can achieve multi-directional workpiece inspection, particularly suitable for the visual inspection needs of bottle-shaped objects. The curved surface illumination area can meet the illumination needs of the circumferential arcs and curved slopes on the sides of bottle-shaped objects, while the upper and lower surface illumination areas can meet the illumination needs of the bottom and top of the bottle-shaped object. Since this solution integrates illumination functions for the top, bottom, and curved sides of bottle-shaped objects, visual inspection of bottle-shaped objects can be completed at a single station, which improves inspection efficiency and reduces space requirements. Furthermore, compared to existing solutions that use light sources at three separate stations, this solution uses only one light source, reducing the cost of using light sources. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A side view of a multi-directional detection device provided in an embodiment of this application;

[0017] Figure 2 This is a front view of a multi-directional detection device provided in an embodiment of this application.

[0018] Figure label:

[0019] 1. Multi-directional detection light source; 11. Housing; 111. Detection cavity; 1111. Upper plane wall; 1112. Lower plane wall; 1113. Side arc wall; 112. Upper plane light-emitting area; 113. Lower plane light-emitting area; 114. Arc light-emitting area; 115. First opening; 116. Second opening; 117. Lamp board; 118. Diffuser plate; 2. Camera; 3. Support component; 4. Object to be detected; 5. Conveying device. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figure 1 and Figure 2 This utility model provides a multi-directional detection device, which mainly includes a multi-directional detection light source 1, a camera 2, and a support 3. Specifically, the multi-directional detection light source 1 includes a housing 11. The housing 11 has a detection cavity 111 for accommodating the object 4 to be detected. The top of the detection cavity 111 has an upper plane light-emitting area 112, the bottom of the detection cavity 111 has a lower plane light-emitting area 113, and the side of the detection cavity 111 has an arc-shaped light-emitting area 114. One end of the arc-shaped light-emitting area 114 is connected to the upper plane light-emitting area 112, and the other end of the arc-shaped light-emitting area 114 is connected to the lower plane light-emitting area 113. The top surface of the support member 3 is used to place the object 4 to be detected. The support member 3 extends into the detection cavity 111, allowing the object 4 to be placed inside the detection cavity 111. The support member 3 is a transparent component that allows light to pass through, so that the lower surface light-emitting area 113 can illuminate the bottom of the object 4. The camera 2 is fixed outside the multi-directional detection light source 1 and is used to acquire images of the object 4 located on the support member 3. Specifically, the camera 2 can be configured as follows: Figure 1 and Figure 2 The camera 2 is positioned diagonally above the support 3 to acquire images of the top or side surfaces of the object 4 being inspected. The camera 2 can also be positioned diagonally below the support 3 to acquire images of the bottom surface of the object 4 being inspected.

[0025] Specifically, the arc-shaped luminous area 114 on the inner side of the multi-directional detection light source 1 in this solution provides arc-shaped illumination, suitable for machine vision inspection of the arc-shaped areas on the sides of products. The upper plane luminous area 112 and the lower plane luminous area 113 provide planar illumination, suitable for machine vision inspection of the upper or lower surface features of products. Therefore, the detection light source in this solution can achieve multi-directional workpiece inspection, particularly suitable for the visual inspection needs of bottle-shaped objects. The arc-shaped luminous area 114 can meet the illumination needs of the circumferential arc and inclined curved areas on the sides of bottle-shaped objects, while the upper plane luminous area 112 and the lower plane luminous area 113 can meet the illumination needs of the bottom and top of the bottle-shaped object. Since this solution integrates illumination functions for the top, bottom, and arc-shaped sides of the bottle-shaped object, it facilitates visual inspection of the bottle-shaped object at a single workstation, thereby improving inspection efficiency and reducing space requirements. Furthermore, compared to existing solutions that use light sources at three separate workstations, this solution uses only one light source, which also helps reduce the cost of using the light source.

[0026] Please refer to them again. Figure 1 and Figure 2The outer wall of the outer casing 11 is provided with a first opening 115 and a second opening 116, wherein the first opening 115 and the second opening 116 are arranged opposite to each other and both extend into the detection cavity 111. In addition, the multi-directional detection device of this embodiment also includes a conveying device 5, which includes the aforementioned support member 3. Moreover, the support member 3 is a transparent conveyor belt, which extends into the first opening 115 and extends outward from the second opening 116. With this structural design, the object to be detected 4 can automatically enter the detection cavity 111 under the conveying of the conveying device 5. After the object to be detected 4 completes visual inspection in the detection cavity 111, the object to be detected 4 is driven outward by the conveying device 5. Compared with the method of manually placing the object to be detected 4 into the detection cavity 111, this structural design can further improve the efficiency of visual inspection of the object to be detected 4. Preferably, the light emission direction of the upper plane light emission area 112, the light emission direction of the lower plane light emission area 113, and the light emission direction of the arc surface light emission area 114 are perpendicular to the transport direction of the support member 3 serving as the conveyor belt.

[0027] Please refer to them again. Figure 1 and Figure 2 The detection cavity 111 has a cavity wall comprising an upper planar wall 1111, a lower planar wall 1112, and a side arc-shaped wall 1113. The upper planar wall 1111 and the lower planar wall 1112 are arranged opposite each other in the longitudinal direction, and the upper planar wall 1111 is located above the lower planar wall 1112. One end of the side arc-shaped wall 1113 is connected to the upper planar wall 1111, and the other end of the side arc-shaped wall 1113 is connected to the lower planar wall 1112. A lamp plate 117 is fixed on each of the upper planar wall 1111, the lower planar wall 1112, and the side arc-shaped wall 1113. With this design, the aforementioned upper planar light-emitting area 112, lower planar light-emitting area 113, and arc-shaped light-emitting area 114 can be formed. The shape of the arc-shaped light-emitting area 114 is preferably semi-circular to improve the uniformity of illumination of the object 4 being detected by the arc-shaped light-emitting area 114. In addition, preferably, the multi-directional detection light source 1 also includes a diffuser plate 118, which simultaneously covers the lamp plate 117 on the upper flat wall 1111, the lower flat wall 1112, and the side arc wall 1113. The diffuser plate 118 can diffuse the light emitted by the lamp plate 117 outwards, which can improve the uniformity of illumination of the object 4 by the upper flat light-emitting area 112, the lower flat light-emitting area 113, and the arc light-emitting area 114, reduce the light shadow, and improve the accuracy of visual detection.

[0028] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A multi-directional detection light source, characterized in that, The device includes a housing, inside which is a detection cavity for accommodating the object to be detected. The top of the detection cavity is provided with an upper planar light-emitting area, the bottom of the detection cavity is provided with a lower planar light-emitting area, and the side of the detection cavity is provided with an arc-shaped light-emitting area. One end of the arc-shaped light-emitting area is connected to the upper planar light-emitting area, and the other end of the arc-shaped light-emitting area is connected to the lower planar light-emitting area.

2. The multi-directional detection light source as described in claim 1, characterized in that, The detection chamber wall includes an upper flat wall, a lower flat wall, and a side arc wall. The upper flat wall and the lower flat wall are arranged opposite each other in the longitudinal direction, and the upper flat wall is located above the lower flat wall. One end of the side arc wall is connected to the upper flat wall, and the other end of the side arc wall is connected to the lower flat wall. A lamp plate is fixed on the upper flat wall, the lower flat wall, and the side arc wall.

3. The multi-directional detection light source as described in claim 2, characterized in that, The multi-directional detection light source also includes a diffuser plate, which simultaneously covers the lamp plate on the upper plane wall, the lower plane wall, and the side arc wall.

4. The multi-directional detection light source as described in claim 2, characterized in that, The side arc wall has a semi-circular shape.

5. The multi-directional detection light source as described in claim 1, characterized in that, The outer wall of the housing is provided with a first opening and a second opening, which are arranged opposite to each other and both extend into the detection cavity.

6. A multi-directional detection device, characterized in that, The device includes a camera, a support member, and a multi-directional detection light source as described in any one of claims 1 to 5. The support member extends into the detection cavity, and the top surface of the support member is used to place the object to be detected. The support member is transparent. The camera is fixed outside the multi-directional detection light source and is used to acquire an image of the object to be detected located on the support member.

7. The multi-directional detection device as described in claim 6, characterized in that, The multi-directional detection light source as described in claim 5 is further comprising a conveying device, the conveying device including the support member, the support member being a transparent conveyor belt, the conveyor belt extending into the first opening and extending outward from the second opening.

8. The multi-directional detection device as described in claim 7, characterized in that, The light emission direction of the upper plane light emission area, the light emission direction of the lower plane light emission area, and the light emission direction of the arc surface light emission area are all perpendicular to the transport direction of the conveyor belt.

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