Light compensation vision system

Abstract

The present invention relates to a light perception compensation visual system, comprising: a controller; a visual detection device, the visual detection device being electrically connected to the controller; a controllable compensation light source, the controllable compensation light source being arranged relative to the visual detection device and being electrically connected to the controller, and the product to be detected being arranged between the controllable compensation light source and the visual detection device; and a light sensor, the light sensor being arranged on one side of the visual detection device and being electrically connected to the controller. The light sensor can automatically detect the light change amount and feed back a signal to the controller, and the controller can identify and calculate the information of the light change amount, and then drive the controllable compensation light source to start working, thereby compensating for the appropriate light brightness, and re-providing an ideal reading and recognition environment for the system, ensuring that the system has a high recognition ability and recognition accuracy.

Description

Technical Field

[0001] The present invention relates to the field of visual detection technology, and in particular to a light perception compensation visual system. Background Art

[0002] With the rapid development of Industry 4.0, the application occasions of visual inspection technology are also increasing, such as stain detection and pattern detection in the spraying station of the sanitary products industry, appearance detection in the manufacturing industry, barcode recognition in the e-commerce industry, etc. When the visual recognition system is applied, the product is generally installed and fixed first, and then the visual inspection device is fixed and the corresponding fault tolerance is set before it can be put into use. This method will have the following problems:

[0003] When replacing products with different light transmittances while the detection pattern remains unchanged, or when the light conditions at the work site change, or when the product surface has a reflective medium layer, these will cause the system's working environment lighting conditions to change. Since the position of the visual inspection device is fixed and cannot be flexibly adjusted, working in an environment with poor light conditions will seriously affect the system's recognition ability and accuracy, and may even make it impossible to perform recognition operations. Summary of the invention

[0004] Based on this, it is necessary to provide a light compensation visual system that can automatically perform appropriate light compensation on the visual detection device according to changes in the light conditions of the working environment, ensuring that the system has high recognition ability and recognition accuracy.

[0005] The technical solution is as follows:

[0006] A light perception compensation visual system, comprising:

[0007] Controller;

[0008] A visual detection device, the visual detection device is electrically connected to the controller;

[0009] a controllable compensating light source, the controllable compensating light source is arranged opposite to the visual inspection device at an interval and is electrically connected to the controller, and a detection area between the controllable compensating light source and the visual inspection device is used to set a product to be inspected; and

[0010] A light sensor is disposed at one side of the visual detection device and is electrically connected to the controller.

[0011] When the above-mentioned light-sensing compensation visual system is used, the product to be inspected is transported into the inspection area between the visual inspection device and the controllable compensation light source, and the visual inspection device can read and identify the graphic pattern on the surface of the product. When the next product with different light transmittance or a product with a reflective medium layer on the surface enters the inspection area, or when the light intensity in the environment changes (from day to night or the light is blocked by an object, etc.), the light conditions of the inspection environment will change. At this time, the light sensor can automatically detect the light change and feedback the signal to the controller. The controller can identify and calculate the information of the light change, and then drive the controllable compensation light source to start working, thereby compensating for the appropriate light brightness, and providing the system with an ideal reading and recognition environment again, ensuring that the system has high recognition ability and recognition accuracy.

[0012] The technical solution of this application is further described below:

[0013] In one embodiment, the distance between the lens of the visual detection device and the controllable compensating light source is equal to the distance between the light sensor and the controllable compensating light source; or

[0014] The distance between the lens of the visual inspection device and the product to be inspected is equal to the distance between the light sensor and the product to be inspected.

[0015] In one embodiment, the number of the light sensors is two or more, and all of them are electrically connected to the controller.

[0016] In one embodiment, it further includes a mounting seat, the mounting seat includes a bracket and an adjustment frame arranged on the bracket, the visual detection device is installed on the bracket, and the light sensor is installed on the adjustment frame.

[0017] In one embodiment, the adjustment frame includes a first connecting plate and a first adjustment component, and the light sensor is disposed on the first connecting plate through the first adjustment component and can rotate within a first plane.

[0018] In one embodiment, the first connecting plate is provided with a first sliding groove, and the light sensor can reciprocate along a first direction in the first sliding groove through the first adjusting component.

[0019] In one embodiment, the adjustment frame further includes a second connecting plate fixed to the first connecting plate and a second adjustment component, and the light sensor is disposed on the second connecting plate through the second adjustment component and can rotate within a second plane.

[0020] In one embodiment, the second connecting plate is provided with a second sliding groove, and the light sensor can reciprocate along the second direction in the second sliding groove through the second adjusting component.

[0021] In one of the embodiments, a control panel is further included, and the control panel is electrically connected to the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a light perception compensation visual system according to an embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 100. Visual inspection device, 200. Controllable compensating light source, 300. Light sensor, 400. Product to be inspected, 500. Mounting seat, 510. Bracket, 520. Adjustment frame, 521. First connecting plate, 522. First adjustment component, 523. Second connecting plate, 524. Second adjustment component. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0026] It should be noted that when an element is referred to as being "fixed on", "arranged on" or "mounted on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time; the specific method of fixedly connecting one element to another element can be achieved by existing technologies, which will not be described in detail here, and preferably a threaded connection is used.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0029] like Figure 1As shown, a light perception compensation visual system of an embodiment of the present application is shown, including: a controller (not shown), which is used to control the automatic and precise operation of each functional component in the system, and can be a PLC device, a numerical control system, a microcontroller, etc.; a visual inspection device 100, which is electrically connected to the controller and is used to identify graphic or image information on the product and determine whether the current product is the required product, so as to facilitate subsequent production and use; a controllable compensation light source 200, which is arranged relative to the visual inspection device 100 and is electrically connected to the controller, and the detection area between the controllable compensation light source 200 and the visual inspection device 100 is used to set the product 400 to be inspected; and a light sensor 300, which is arranged on one side of the visual inspection device 100 and is electrically connected to the controller.

[0030] When the above-mentioned light compensation visual system is used for operation, the product to be inspected is transported into the inspection area between the visual inspection device 100 and the controllable compensation light source 200, and the visual inspection device 100 can read and identify the graphic pattern on the surface of the product. When the next product with different light transmittance or a product with a reflective medium layer on the surface enters the inspection area, or when the light intensity in the environment changes, the light conditions of the inspection environment will change. At this time, the light sensor 300 can automatically detect the light change and feedback the signal to the controller. The controller can identify and calculate the information of the light change, and then drive the controllable compensation light source 200 to start working, thereby compensating for the appropriate light brightness, and re-providing an ideal reading and recognition environment for the system, ensuring that the system has high recognition ability and recognition accuracy.

[0031] The above-mentioned controllable compensation light source 200 is required to be able to directly perform light compensation for the product 400 to be inspected, and it is composed of controllable components and light sources, wherein the light source can be an LED lamp, an incandescent lamp, a fluorescent lamp, etc. The compensation method can be divided into three methods: lower light source compensation, upper light source compensation, and side light source compensation according to product characteristics, production conditions, etc. When using lower light source compensation, it is required that the distance between the lens of the visual inspection device 100 and the controllable compensation light source 200 is equal to the distance between the light sensor 300 and the controllable compensation light source 200; or

[0032] When using upper light source compensation or side light source compensation, it is required that the distance between the lens of the visual inspection device 100 and the product to be inspected 400 is equal to the distance between the light sensor 300 and the product to be inspected 400. By setting in this way, it is possible to avoid the difference between the recognition light path of the visual inspection device 100 and the detection light path of the light sensor 300, which will cause the environmental position of the light sensor 300 to be inconsistent with the environmental position of the system, affecting the light compensation accuracy and sensitivity.

[0033] In order to prevent the light and darkness, shielding, etc. in the environment from affecting the detection accuracy of the light sensor 300 and causing inaccurate detection results, further, the number of the light sensors 300 is two or more, and they are all electrically connected to the controller. By deploying two or more light sensors 300, the light conditions of the system environment can be detected and fed back at the same time, and the controller can comprehensively calculate and analyze various feedback signals, filter interference information, and further improve the light compensation accuracy.

[0034] Please continue reading Figure 1 On the basis of the above embodiment, the system (hereinafter referred to as the light compensation visual system) further includes a mounting base 500, the mounting base 500 includes a bracket 510 and an adjustment frame 520 disposed on the bracket 510, the visual detection device 100 is mounted on the bracket 510, and the light sensor 300 is mounted on the adjustment frame 520. Therefore, the bracket 510 can install and fix the system, and has high mobility, which is suitable for different working occasions; the adjustment frame 520 is convenient for adjusting the environmental position of the light sensor 300 so that it can be consistent with the environmental position of the system to ensure the light compensation effect.

[0035] In an optional embodiment, the adjustment frame 520 includes a first connecting plate 521 and a first adjustment component 522. The light sensor 300 is arranged on the first connecting plate 521 through the first adjustment component 522 and can rotate in a first plane. It can be understood that the so-called first plane can be an XOZ plane or a YOZ plane in a spatial coordinate system. The first adjustment component 522 is a bolt and nut assembly. By loosening and tightening the bolt and nut assembly, the light sensor 300 can be rotated to adjust the detection angle, meet the detection needs of graphics or patterns at different positions on different products, improve the detection performance, and make the environmental position of the light sensor 300 consistent with the environmental position of the system.

[0036] Furthermore, the first connecting plate 521 is provided with a first slide groove, and the light sensor 300 can reciprocate along the first direction in the first slide groove through the first adjustment component 522. The first slide groove can be opened along the Z-axis direction or along the Y-axis direction, so that the distance between the light sensor 300 and the controllable compensation light source 200 or the product to be detected 400 can be flexibly adjusted.

[0037] Please continue reading Figure 1 In addition, in another optional embodiment, the adjustment frame 520 further includes a second connecting plate 523 fixed to the first connecting plate 521 and a second adjustment component 524, and the light sensor 300 is disposed on the second connecting plate 523 through the second adjustment component 524 and can rotate in a second plane. Specifically, the second plane is an XOY plane in the same spatial coordinate system, and the second adjustment component 524 is also a bolt and nut assembly. By loosening and tightening the bolt and nut assembly, the illumination angle of the light sensor 300 in space can be further adjusted to improve the performance of the system, and at the same time, the environmental position of the light sensor 300 is consistent with the environmental position of the system.

[0038] Furthermore, the second connecting plate 523 is provided with a second slide groove, and the light sensor 300 can reciprocate along the second direction in the second slide groove through the second adjustment component 524. The second slide groove can be opened along the X-axis direction or along the Y-axis direction, so that the distance between the light sensor 300 and the controllable compensation light source 200 or the product to be detected 400 can be flexibly adjusted.

[0039] In addition, based on any of the above embodiments, the system further includes a control panel (not shown), which is electrically connected to the controller. The control panel can adjust and set the data of the controller, and adjust the sensitivity of the light sensor 300 and the additional compensation value, so as to directly and accurately control the controllable compensation light source 200.

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A light perception compensation visual system, characterized in that: include: Controller; A visual detection device, the visual detection device is electrically connected to the controller; A controllable compensating light source, the controllable compensating light source is arranged opposite to the visual inspection device at an interval and is electrically connected to the controller, and the inspection area between the controllable compensating light source and the visual inspection device is used to set the product to be inspected; A light sensor, the light sensor is arranged at one side of the visual detection device and is electrically connected to the controller; the number of the light sensors is two or more and all are electrically connected to the controller; It also includes a mounting seat, the mounting seat includes a bracket and an adjustment frame arranged on the bracket, the visual detection device is installed on the bracket, and the light sensor is installed on the adjustment frame; and The adjustment frame includes a first connecting plate and a first adjusting component. The light sensor is arranged on the first connecting plate through the first adjusting component and can rotate in a first plane.

2. The light perception compensation visual system according to claim 1, characterized in that: The distance between the lens of the visual detection device and the controllable compensation light source is equal to the distance between the light sensor and the controllable compensation light source.

3. The light perception compensation visual system according to claim 1, characterized in that: The distance between the lens of the visual inspection device and the product to be inspected is equal to the distance between the light sensor and the product to be inspected.

4. The light perception compensation visual system according to claim 1, characterized in that: The controllable compensation light source is composed of controllable components and a light source.

5. The light perception compensation visual system according to claim 1, characterized in that: The first connecting plate is provided with a first sliding groove, and the light sensor can reciprocate along a first direction in the first sliding groove through the first adjusting component.

6. The light perception compensation visual system according to claim 4, characterized in that: The adjustment frame further comprises a second connecting plate fixed to the first connecting plate and a second adjustment assembly. The light sensor is arranged on the second connecting plate through the second adjustment assembly and can rotate in a second plane.

7. The light perception compensation visual system according to claim 6, characterized in that: The second connecting plate is provided with a second sliding groove, and the light sensor can reciprocate along the second direction in the second sliding groove through the second adjusting component.

8. The light perception compensation visual system according to any one of claims 1 to 7, characterized in that: It also includes a control panel, which is electrically connected to the controller.

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