Photovoltaic module detection device and detection method

Abstract

The invention provides a photovoltaic module detection device and detection method. Relates to the technical field of photovoltaic structures. The photovoltaic module detection device comprises a first transmission assembly and a second transmission assembly which are arranged continuously. The first transmission assembly is provided with a movable first image acquisition unit, and the first image acquisition unit can move along a first direction and / or a second direction relative to the first transmission assembly so as to acquire a first image of a specified area on the photovoltaic assembly and identify and judge defect parameters on the area according to the first image; a movable second image acquisition unit is arranged on the second transmission assembly; and the second image acquisition unit can move along the first direction and / or the second direction relative to the second transmission assembly so as to acquire a second image of other areas except the specified area on the photovoltaic assembly and identify and judge defect parameters on the area according to the second image.

Description

Technical Field

[0001] The present disclosure relates to the technical field of photovoltaic structures, and in particular to a photovoltaic component detection device and detection method. Background Art

[0002] In the photovoltaic industry, photovoltaic modules are the core components of photovoltaic power stations, and their quality and performance have a significant impact on the operation and power generation benefits of the entire project. There are many production and processing links for photovoltaic modules, and photovoltaic modules are prone to defects such as hidden cracks, black spots, fragments, hot spots, delamination, and bubbles during the production and processing process. These defects seriously affect the performance and stability of photovoltaic modules. Therefore, defect detection is required before photovoltaic modules leave the factory.

[0003] At present, most manufacturers use manual inspection methods, which are not only inefficient but also have a high missed detection rate, seriously affecting the production efficiency and product quality of the production line. Summary of the invention

[0004] A technical problem to be solved by the present disclosure is that the existing defect detection of photovoltaic modules is mostly manual detection, which has the problems of low efficiency and high missed detection rate.

[0005] In order to solve the above technical problems, the present disclosure provides a photovoltaic module detection device, which includes:

[0006] A first transmission component and a second transmission component are arranged in succession;

[0007] A movable first image acquisition unit is provided on the first transmission component, and the first image acquisition unit can move relative to the first transmission component along a first direction and / or a second direction to acquire a first image of a specified area on the photovoltaic component and identify and determine defect parameters on the area according to the first image;

[0008] A movable second image acquisition unit is provided on the second transmission component, and the second image acquisition unit can move relative to the second transmission component along the first direction and / or the second direction to acquire a second image of other areas on the photovoltaic component except the designated area, and identify and determine the defect parameters of the area according to the second image;

[0009] The first direction is the transmission direction of the first transmission component, and the second direction forms a specified angle with the first direction.

[0010] In some embodiments, the aforementioned photovoltaic assembly detection device further includes a first position sensor and a second position sensor;

[0011] The first position sensor is disposed on the first transmission component to detect first in-position information of the photovoltaic component, so that the first image acquisition unit starts image acquisition and defect recognition for a designated area of ​​the photovoltaic component;

[0012] The second position sensor is disposed on the second transmission component to detect second in-position information of the photovoltaic component, so that the second image acquisition unit starts image acquisition and defect recognition for other areas of the photovoltaic component except the designated area.

[0013] In some embodiments, the aforementioned photovoltaic assembly detection device further includes a controller;

[0014] The controller is connected to the first position sensor, the second position sensor, the first image acquisition unit, the second image acquisition unit, the drive of the first transmission component and the drive signal of the second transmission component. The controller can control the drive stop of the first transmission component according to the first in-place information and control the first image acquisition unit to start image acquisition and defect recognition for the designated area of ​​the photovoltaic component; the controller can control the drive stop of the second transmission component according to the second in-place information and control the second image acquisition unit to start image acquisition and defect recognition for other areas on the photovoltaic component except the designated area.

[0015] In some embodiments, in the aforementioned photovoltaic component detection device, the first transmission component and the second transmission component each include a plurality of conveyor belts spaced apart along the second direction.

[0016] In some embodiments, in the aforementioned photovoltaic component detection device, the conveyor belt of the first transmission component and the conveyor belt of the second transmission component are alternately arranged along the second direction.

[0017] In some embodiments, the aforementioned photovoltaic component detection device further includes a moving component;

[0018] The first image acquisition unit and the second image acquisition unit are connected to the first transmission component and the second transmission component respectively through the moving component;

[0019] The mobile assembly includes a first mobile frame and a second mobile frame;

[0020] Two ends of the first mobile frame along the second direction are movably arranged on both sides of the first transmission component or the second transmission component along the second direction, so that the first mobile frame can reciprocate relative to the first transmission component or the second transmission component along the first direction;

[0021] The second mobile frame is movably arranged on the first mobile frame, and is connected to the first image acquisition unit or the second image acquisition unit, so that the second mobile frame can carry the first image acquisition unit or the second image acquisition unit to reciprocate along the second direction.

[0022] In some embodiments, in the aforementioned photovoltaic assembly detection device, the first image acquisition unit and the second image acquisition unit each include an image acquisition device and an image processor;

[0023] The image acquisition device is a linear array camera;

[0024] The image processor is connected to the image acquisition device by signal so as to receive the image acquired by the image acquisition device and determine the defect parameters of the photovoltaic module according to the image analysis;

[0025] The defect parameters include at least defect type, defect location, and defect size.

[0026] The second aspect of the present disclosure provides a photovoltaic module detection method, which includes the following steps:

[0027] Loading the first photovoltaic component to the first transmission component;

[0028] Starting the first image acquisition unit to perform image acquisition and defect recognition on a designated area of ​​the first photovoltaic component;

[0029] Transmitting the first photovoltaic component to the second transmission component, and loading the second photovoltaic component to the first transmission component;

[0030] The second image acquisition unit is started to perform image acquisition and defect recognition on other areas of the first photovoltaic component except the designated area, and the first image acquisition unit is started to perform image acquisition and defect recognition on the designated area of ​​the second photovoltaic component;

[0031] The first photovoltaic component is unloaded and the second photovoltaic component is simultaneously transferred to the second transfer component.

[0032] In some embodiments, the photovoltaic component detection method described above, wherein the method of starting the first image acquisition unit to perform image acquisition and defect recognition on a designated area of ​​the first photovoltaic component, includes:

[0033] stopping the first transmission component according to the first arrival information;

[0034] Initiate the first image acquisition unit to move along the first direction and / or the second direction according to the first in-position information to acquire an image of a designated area of ​​the first photovoltaic assembly;

[0035] The first direction is the transmission direction of the first transmission component, and the second direction forms a specified angle with the first direction.

[0036] In some embodiments, the photovoltaic component detection method described above, wherein the method of starting the second image acquisition unit to perform image acquisition and defect recognition on other areas of the first photovoltaic component except the designated area, includes:

[0037] stopping the second transmission component according to the second in-place information;

[0038] According to the second in-position information, the second image acquisition unit is started to move along the first direction and / or the second direction to acquire images of other areas except the designated area on the first photovoltaic assembly;

[0039] The first direction is the transmission direction of the first transmission component, and the second direction forms a specified angle with the first direction.

[0040] Through the above technical scheme, the photovoltaic component detection device provided by the present invention forms a dual detection station for photovoltaic component defect detection by cooperating the first transmission component with the first image acquisition unit, and cooperating the second transmission component with the second image acquisition unit, thereby realizing automatic detection and high-precision detection of photovoltaic component defects; at the same time, through the active setting of the first image acquisition unit and the second image acquisition unit, the dual detection stations cooperate to detect the action of the same photovoltaic component, which can not only reduce the work rhythm but also use the second transmission component to unload the material separately without affecting the photovoltaic component being inspected, realize automatic detection while ensuring the continuity of detection, and improve detection efficiency; effectively solve the problem that the existing photovoltaic component defect detection is mostly manual detection, with low efficiency and high missed detection rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 is a schematic diagram of the structure of a photovoltaic module detection device disclosed in an embodiment of the present disclosure;

[0043] Figure 2 is a structural block diagram of a photovoltaic module detection device disclosed in an embodiment of the present disclosure;

[0044] Figure 3 It is a flow chart of the photovoltaic module detection method disclosed in the embodiment of the present disclosure.

[0045] Description of reference numerals:

[0046] 1. First transmission component; 11. Conveyor belt; 12. Driving wheel; 2. Second transmission component; 3. First image acquisition unit; 4. Second image acquisition unit; 41. Image acquisition device; 42. Image processor; 5. First photovoltaic component; 6. Second photovoltaic component; 7. First position sensor; 8. Second position sensor; 9. Moving component; 91. First moving frame; 92. Second moving frame; 10. Controller; a. First direction; b. Second direction. DETAILED DESCRIPTION

[0047] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0048] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0049] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0050] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0051] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0052] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0053] Photovoltaic modules are solar panels composed of multiple photovoltaic cells. They are the core part of the solar power generation system. They can convert solar energy into electricity and store electricity or drive loads. There are many production and processing links for photovoltaic modules. During the production and processing, photovoltaic modules are prone to defects such as hidden cracks, black spots, fragments, hot spots, delamination, bubbles, etc. These defects seriously affect the performance and stability of photovoltaic modules. Therefore, defect detection is required before photovoltaic modules leave the factory. At present, most manufacturers use manual detection methods to observe the surface of photovoltaic modules with the naked eye to find defects. This is not only inefficient but also has a high missed detection rate, which seriously affects the production efficiency and product quality of the production line.

[0054] The photovoltaic module detection device provided in this embodiment uses automated transmission and automated image acquisition and analysis to achieve automated, high-precision defect detection of photovoltaic modules, thereby improving detection efficiency, reducing missed detection rates, and effectively ensuring product quality.

[0055] Example 1

[0056] Reference Figure 1 , the present embodiment discloses a photovoltaic component detection device, which includes a first transmission component 1 and a second transmission component 2, a first image acquisition unit 3 and a second image acquisition unit 4 which are arranged in succession; the first transmission component 1 is provided with a movable first image acquisition unit 3, the first image acquisition unit 3 can move relative to the first transmission component 1 along a first direction a and / or a second direction b to obtain a first image of a specified area on the photovoltaic component and identify and judge the defect parameters of the area according to the first image; the second transmission component 2 is provided with a movable second image acquisition unit 4, the second image acquisition unit 4 can move relative to the second transmission component 2 along a first direction a and / or a second direction b to obtain a second image of other areas on the photovoltaic component except the specified area and identify and judge the defect parameters of the area according to the second image;

[0057] The first direction a is the transmission direction of the first transmission component 1 , and the second direction b forms a specified angle with the first direction a.

[0058] Specifically, in order to solve the problem that the existing defect detection of photovoltaic components is mostly manual detection, which has low efficiency and high missed detection rate, the present embodiment provides a photovoltaic component detection device, in which a first image acquisition unit 3 is set in conjunction with a first transmission component 1, and a second image acquisition unit 4 is set in conjunction with a second transmission component 2, so as to realize automatic detection of defects of photovoltaic components at two workstations; at the same time, the first image acquisition unit 3 and the second image acquisition unit 4 can respectively complete part of the image acquisition and defect recognition for the same photovoltaic component, which can not only reduce the production rhythm but also realize continuous detection of the previous workstation through cooperation, and even if the next workstation unloads materials, it will not affect the continuity of the detection transmission, and thus the first image acquisition unit 3 and the second image acquisition unit 4 can simultaneously perform image acquisition and defect recognition of the first photovoltaic component 5 and the second photovoltaic component 6.

[0059] Among them, the first direction a and the second direction b in this embodiment can be the transmission direction of the first transmission component 1 and the direction having a specified angle with the transmission direction, respectively, which can be but not limited to an angle of 90 degrees and an angle of 60 degrees. In this embodiment, the following content will be described in detail with the angle of 90 degrees between the two.

[0060] Among them, the first transmission component 1 and the second transmission component 2 can be but are not limited to structural components with transmission functions in the form of conveyor belts, conveyor rollers, air-floating coordinated conveyor rollers, etc. The first transmission component 1 and the second transmission component 2 have the same transmission direction and are arranged in succession. There can be a small gap or distance between the two to ensure that the photovoltaic component can be transferred from the first transmission component 1 to the second transmission component 2 without jamming or obstruction; in this embodiment, the drives of the first transmission component 1 and the second transmission component 2 are controlled separately and do not interfere with each other. When the first transmission component 1 is in motion, the second transmission component 2 can be in motion or stopped. Correspondingly, when the second transmission component 2 is in motion, the first transmission component 1 can be in motion or stopped; further, in this embodiment, when the first photovoltaic component 5 is loaded onto the first transmission component 1 and stays at a predetermined position, the first image acquisition unit 3 is started to acquire images and defects of the specified area thereon. Identification and analysis, then start the first transmission component 1 to transfer the first photovoltaic component 5 to the second transmission component 2 and stop at the designated position of the second transmission component 2, start the second image acquisition unit 4 to perform image acquisition and defect recognition analysis on the remaining area, while the first photovoltaic component 5 moves to the second transmission component 2, the second photovoltaic component 6 is loaded onto the first transmission component 1 to synchronously perform image acquisition and defect recognition of the designated area thereon, and then when the first photovoltaic component 5 is detected, it can be directly unloaded through the second transmission component 2, and the second photovoltaic component 6 can be continuously transferred to the second transmission component 2 for detection of the remaining area, and so on, the first transmission component 1 and the first image acquisition unit 3 can continuously load and detect the photovoltaic components, and the second transmission component 2 and the second image acquisition unit 4 cooperate to perform detection and unloading, without interfering with each other, reducing the beat while improving efficiency. It can be understood that in this embodiment, a position sensor or position switch can be set to cooperate with the movement of the first transmission component 1 and the second transmission component 2 to achieve automatic control.

[0061] Among them, the first image acquisition unit 3 and the second image acquisition unit 4 are integrated devices capable of performing image acquisition and image processing. In this embodiment, the first image acquisition unit 3 and the second image acquisition unit 4 may include but are not limited to an image acquisition device 41 and an image processor 42; the image acquisition device 41 may be but is not limited to a linear array camera, a camera, a CCD camera, etc., which can convert an optical image on the surface of the photovoltaic component into an analog / digital image to pave the way for subsequent analysis and processing by the image processor 42; due to the large size of the photovoltaic component, a linear array camera can be selected in this embodiment, and its continuous scanning image acquisition function can be used to achieve accurate and comprehensive image acquisition of the photovoltaic component; the image processor 42 is capable of performing image processing and analysis using a convolutional neural network (CNN) according to the analog / digital image provided by the image acquisition unit 41, including feature recognition and matching analysis to obtain defect parameters. In this embodiment, the defect parameters at least include defect type, defect location, and defect size. For example: the histogram intersection method or distance method can be used to identify color features; the grayscale co-occurrence matrix, local binary pattern and other methods can be used to count the relationship between pixels in the image and their neighboring pixels to identify texture features; the shape features can be identified by boundary features or regional features; the spatial coordinate system can be used to analyze and describe the spatial position or relative position relationship between multiple features, including connection or adjacency, overlap or overlapping, etc.; and then the type of the feature can be determined by comparing the identified feature with the known feature, i.e., broken pieces or hidden cracks or notches or scratches, etc.; the above image processing process can be easily understood and implemented by those skilled in the art, and will not be elaborated on here. It can be understood that the framing direction of the image acquisition device 41 in this embodiment is perpendicular to the surface of the photovoltaic module. In this embodiment, the start-up of the first image acquisition unit 3 and the second image acquisition unit 4 can be realized by the controller 10, which is a PLC controller capable of data transmission and reception, analysis and processing, comparison and contrast, and program editing; it can control the start-up of the first image acquisition unit 3 and the second image acquisition unit 4 according to the transmission and position conditions of the photovoltaic components on the first transmission component 1 and the second transmission component 2. In this embodiment, the first image acquisition unit 3 and the second image acquisition unit 4 are both configured to be movable, so that a comprehensive image acquisition of a designated area can be performed, and the movement can be driven by a ball screw, and it can be understood that the movement mode is set according to the specific type of the image acquisition unit, for example: if the image acquisition unit includes a linear array camera, the image acquisition unit needs to move along the first direction a and the second direction b simultaneously to scan the area, and when the image acquisition unit includes a planar array camera, the image acquisition unit can only move in the first direction a or only in the second direction b, so as to realize the image acquisition of the area through multiple small area image acquisitions.In this embodiment, the areas where the first image acquisition unit 3 and the second image acquisition unit 4 perform image acquisition and defect recognition can be designed and adjusted according to actual needs and production rhythm. For example, the first image acquisition unit 3 captures half of the area of ​​the photovoltaic module, and the second image acquisition unit 4 captures the other half of the area of ​​the photovoltaic module.

[0062] According to the above, in the photovoltaic component detection device provided by the present invention, the first transmission component 1 cooperates with the first image acquisition unit 3, and the second transmission component 2 cooperates with the second image acquisition unit 4 to form a dual detection station for photovoltaic component defect detection, thereby realizing automatic detection and high-precision detection of photovoltaic component defects; at the same time, through the active setting of the first image acquisition unit 3 and the second image acquisition unit 4, the dual detection stations cooperate to detect the same photovoltaic component, which can not only reduce the working rhythm but also use the second transmission component 2 to unload the material separately without affecting the photovoltaic component being inspected, and can realize automatic detection while ensuring the continuity of detection, thereby improving detection efficiency; effectively solving the problem that the existing photovoltaic component defect detection is mostly manual detection, with low efficiency and high missed detection rate.

[0063] The term "and / or" in this article is merely a description of the association relationship of associated objects, identifying three possible relationships. For example, A and / or B is specifically understood as: A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.

[0064] In some embodiments, refer to the attached Figure 2 The photovoltaic component detection device provided in this embodiment, in a specific implementation, also includes a first position sensor 7 and a second position sensor 8; the first position sensor 7 is arranged on the first transmission component 1 to detect the first in-place information of the photovoltaic component, so that the first image acquisition unit 3 starts image acquisition and defect recognition for the designated area of ​​the photovoltaic component; the second position sensor 8 is arranged on the second transmission component 2 to detect the second in-place information of the photovoltaic component, so that the second image acquisition unit 4 starts image acquisition and defect recognition for other areas on the photovoltaic component except the designated area.

[0065] It can be understood that in order to achieve accurate positioning of the first transmission component 1 and the second transmission component 2 and stop cooperating with the first image acquisition unit 3 and the second image acquisition unit 4 to perform image acquisition, a first position sensor 7 and a second position sensor 8 are provided in this embodiment to detect the position of the photovoltaic components. The first position sensor 7 and the second position sensor 8 can be the same sensor or different sensors, for example: an infrared sensor, a distance sensor. In this embodiment, the first position sensor 7 and the second position sensor 8 can be provided in the middle of the first transmission component 1 and the second transmission component 2 to ensure that all photovoltaic components are placed on the transmission component, and then the transmission component is controlled to stop transmission and start the image acquisition unit to perform image acquisition and defect identification.

[0066] It can be understood that the controller 10 in this embodiment is connected to the first position sensor 7, the second position sensor 8, the first image acquisition unit 3, the second image acquisition unit 4, the drive of the first transmission component 1 and the drive signal of the second transmission component 2. The controller 10 can control the drive stop of the first transmission component 1 according to the first in-place information and control the first image acquisition unit 3 to start image acquisition and defect recognition for the designated area of ​​the photovoltaic component; the controller 10 can control the drive stop of the second transmission component 2 according to the second in-place information and control the second image acquisition unit 4 to start image acquisition and defect recognition for other areas on the photovoltaic component except the designated area. Of course, it can be understood that the image acquisition areas corresponding to the first image acquisition unit 3 and the second image acquisition unit 4 are pre-set in the controller according to the specifications of the photovoltaic component. For example, the positions of the first position sensor 7 and the second position sensor 8 on the first transmission component 1 and the second transmission component 2 are determined, and the position of the first position sensor 7 can be used as the starting point of the starting acquisition area of ​​the first image acquisition unit 3 in the first direction a. The movement distance of the first image acquisition unit 3 in the first direction a and the second direction b is set according to the specifications of the photovoltaic component, so that the first image acquisition unit 3 scans one end of the photovoltaic component toward the second transmission component 2; the position of the second position sensor 8 plus the movement distance of the first image acquisition unit 3 in the first direction a can be used as the starting point of the second image acquisition unit 4 in the first direction a, and the movement distance of the second image acquisition unit 4 in the first direction a and the second direction b is determined according to the difference between the specifications of the photovoltaic component and the movement distance of the first image acquisition unit 3 in the first direction a and the second direction b, so as to realize the full-area scanning and acquisition of the upper surface of the photovoltaic component.

[0067] In some embodiments, refer to the attached Figure 1 In the photovoltaic component detection device provided in this embodiment, in a specific implementation, the first transmission component 1 and the second transmission component 2 both include a plurality of conveyor belts 11 spaced apart along the second direction b.

[0068] It is understandable that in order to realize the transmission of photovoltaic components and avoid damaging the photovoltaic components during transportation, in this embodiment, the first transmission component 1 and the second transmission component 2 are set in the form of a conveyor belt 11, and multiple conveyor belts 11 are set at intervals; the conveyor belt 11 is a soft conveyor belt to avoid hard bumps or scratches on the photovoltaic components; the interval of the conveyor belt 11 can reduce the contact area between the transmission component and the photovoltaic component, thereby reducing friction; in this embodiment, the size of the conveyor belt 11 can be designed and selected according to actual needs, and the narrower the better under the premise of ensuring the transmission of photovoltaic components. And it is understandable that in this embodiment, a driving wheel 12 and a driving motor (not shown in the figure) that cooperates with the driving wheel 12 can be set at one end of the first transmission component 1 away from the second transmission component 2 and one end of the second transmission component 2 away from the first transmission component 1, so as to realize the motion transmission of the conveyor belt 11.

[0069] Further, see Attachment Figure 1 In the photovoltaic component detection device provided in this embodiment, in a specific implementation, the conveyor belt 11 of the first transmission component 1 and the conveyor belt 11 of the second transmission component 2 are alternately arranged along the second direction b.

[0070] It can be understood that in order to avoid local wear of the photovoltaic components during the transmission and detection process, the conveyor belt 11 of the first transmission component 1 and the conveyor belt 11 of the second transmission component 2 in the present force are staggered along the second direction b, that is, the conveyor belt 11 in the second transmission component 2 corresponds to the position between the adjacent conveyor belts 11 in the first transmission component 1, and thus the area where the photovoltaic component contacts the conveyor belt 11 on the first transmission component 1 will not be contacted on the second transmission component 2, thereby avoiding unnecessary defects caused by the friction of part of the surface of the photovoltaic component by the conveyor belt 11 all the time.

[0071] Further, see Attachment Figure 1 , the photovoltaic component detection device provided in this embodiment, in a specific implementation, further includes a moving component 9, and the first image acquisition unit 3 and the second image acquisition unit 4 are respectively connected to the first transmission component 1 and the second transmission component 2 through the moving component 9;

[0072] The moving assembly 9 includes a first moving frame 91 and a second moving frame 92; the first moving frame 91 is movably arranged at both ends along the second direction b on both sides of the first transmission assembly 1 or the second transmission assembly 2 along the second direction b, so that the first moving frame 91 can reciprocate along the first direction a relative to the first transmission assembly 1 or the second transmission assembly 2; the second moving frame 92 is movably arranged on the first moving frame 91, and the second moving frame 92 is connected to the first image acquisition unit 3 or the second image acquisition unit 4, so that the second moving frame 92 can carry the first image acquisition unit 3 or the second image acquisition unit 4 to reciprocate along the second direction b.

[0073] It can be understood that in order to realize the movement of the first image acquisition unit 3 and the second image acquisition unit 4, in this embodiment, a moving assembly 9 is respectively provided for the two, and the moving assembly 9 includes a first moving frame 91 and a second moving frame 92, and the first moving frame 91 and the second moving frame 92 are both rigid structures; the first moving frame 91 extends along the second direction b and can reciprocate along the first direction a, and the first moving frame 91 can be slidably connected to the two sides of the first transmission assembly 1 or the second transmission assembly 2 along the second direction b, for example: a moving assembly 91 is provided on the two sides of the first transmission assembly 1 or the second transmission assembly 2 along the second direction b. A linear ball screw structure extending along the first direction a is provided. When the linear ball screw is driven, it can drive the first movable frame 91 to reciprocate along the first direction a; accordingly, the second movable frame 92 can also be slidably connected to the first movable frame 91 in the same manner to realize reciprocating motion along the second direction b; the connection between the first image acquisition unit 3 or the second image acquisition unit 4 and the second movable frame 92 can be screwed, welded, clamped, bonded or the like, as long as the installation is stable so that the image acquisition port of the first image acquisition unit 3 or the second image acquisition unit 4 is vertically downward corresponding to the conveyor belt 11.

[0074] Example 2

[0075] Reference Figure 3 The photovoltaic module detection method provided in this embodiment includes the following steps in specific implementation:

[0076] 101. Loading the first photovoltaic component 5 to the first transmission component 1;

[0077] It can be understood that the first photovoltaic component 5 can be loaded and smoothly placed on the first transmission component 1 by a robotic arm or a loading transmission component. During this process, the first transmission component 1 can be running or not. This process can be completed by the controller 10 in this embodiment or by a separate control program or system. It can be easily understood and implemented by those skilled in the art and will not be elaborated on here.

[0078] 102. Start the first image acquisition unit 3 to perform image acquisition and defect recognition on a designated area of ​​the first photovoltaic component 5;

[0079] It is understandable that when the first photovoltaic component 5 is loaded, it may be partially or completely on the first transmission component 1. Then, in this embodiment, the first in-place information of the first position sensor 7 can be used to determine that the first photovoltaic component 5 is completely on the first transmission component 1, so as to ensure the stability of the first photovoltaic component 5 during the detection process. Of course, the setting position of the first position sensor 7 can be adjusted according to the actual design to ensure that the first photovoltaic component 5 is completely on the first transmission component 1 when the first photovoltaic component 5 moves to the position of the first position sensor 7. Then, when the controller 10 receives the first in-place information of the first position sensor 7, it can control the first transmission component 1 to stop, keep the position of the first photovoltaic component 5 unchanged, and prepare for image acquisition.

[0080] 103. According to the first in-position information, the first image acquisition unit 3 is started to move along the first direction a and / or the second direction b to acquire an image of a specified area of ​​the first photovoltaic component 5; wherein the first direction a is the transmission direction of the first transmission component 1, and the second direction b is at a specified angle to the first direction a;

[0081] It can be understood that: after step 102, the controller 10 can control the first image acquisition unit 3 to start image acquisition and defect recognition for the designated area of ​​the first photovoltaic component 5 according to the first in-position information; of course, the area for image acquisition by the first image acquisition unit 3 is pre-set in the controller according to the specifications of the photovoltaic component, for example: the position of the first position sensor 7 on the first transmission component 1 is determined, and the position of the first position sensor 7 can be used as the starting point of the first image acquisition unit 3 in the first direction a. The movement distance of the first image acquisition unit 3 in the first direction a and the second direction b is set according to the specifications of the photovoltaic component, so that the first image acquisition unit 3 scans the photovoltaic component toward one end of the second transmission component 2; the above-mentioned designated area can be designed and adjusted according to actual needs and production rhythm, and can be but not limited to half of the area of ​​the first photovoltaic component 5, and specifically can be half of the size in the first direction a corresponding to the full size in the second direction b. And the image processing and defect recognition of the designated area of ​​the first photovoltaic component 5 by the first image acquisition unit 3 in this step can be easily understood by those skilled in the art, and will not be described in detail here. In this embodiment, the photovoltaic components can also be numbered in the controller 10 to store data corresponding to the defect recognition results. In addition, the moving direction of the first image acquisition unit 3 in this embodiment can be designed and adjusted according to the type of image acquisition device 41. For example, when the image acquisition device is a linear array camera, the image acquisition unit needs to move in the first direction a and the second direction b simultaneously to scan the area. When the image acquisition device 41 is a planar array camera, the image acquisition unit can only move in the first direction a or only in the second direction b to achieve regional image acquisition through multiple small-area image acquisitions. In this embodiment, a linear array camera can be selected. Since the size of the photovoltaic module is large, this embodiment can use the image acquisition function of the continuous scanning of the linear array camera to achieve accurate and comprehensive image acquisition of the photovoltaic module, avoiding errors in the process of stitching multiple small-area images.

[0082] 104. Transmit the first photovoltaic component 5 to the second transmission component 2, and load the second photovoltaic component 6 to the first transmission component 1;

[0083] It can be understood that after the first photovoltaic component 5 is detected on the first transmission component 1 side in step 103, the controller 10 can start the first transmission component 1 to resume transmission, and at the same time start the second transmission component 2 to receive the first photovoltaic component 5. In this process, the controller 10 can start the first transmission component 1 and the second transmission component 2 according to the execution completion node of the control signal of the first image acquisition unit 3. This setting can be easily understood by those skilled in the art and will not be described in detail here. While the first photovoltaic component 5 is transmitted to the second transmission component 2, the second photovoltaic component 6 can be loaded on the first transmission component 1. At this time, there is no need to separately control the first transmission component 1 to start loading again, which is efficient and convenient.

[0084] 105. Start the second image acquisition unit 4 to perform image acquisition and defect recognition on other areas of the first photovoltaic component 5 except the designated area, and start the first image acquisition unit 3 to perform image acquisition and defect recognition on the designated area of ​​the second photovoltaic component 6;

[0085] It can be understood that after step 104, the controller 10 can control the second image acquisition unit 4 to start image acquisition and defect recognition for other areas on the first photovoltaic component 5 except the designated area according to the second in-position information; of course, the area for image acquisition by the second image acquisition unit 4 is pre-set in the controller according to the specifications of the photovoltaic component, for example: the position of the second position sensor 8 on the second transmission component 2 is determined, and the sum of the position of the second position sensor 8 and the movement distance of the first image acquisition unit 3 along the first direction a can be used as the starting point of the first direction a of the starting acquisition area of ​​the second image acquisition unit 4, and the movement distance of the second image acquisition unit 4 in the first direction a and the second direction b is set according to the specifications of the photovoltaic component, so that the second image acquisition unit 4 scans the photovoltaic component toward one end of the first transmission component 1; the above-mentioned other areas except the designated area can be designed and adjusted according to actual needs and production rhythm, and can be but not limited to half of the area of ​​the first photovoltaic component 5, and specifically can be half of the size in the first direction a corresponding to the full size in the second direction b. And in this step, the second image acquisition unit 4 performs image processing and defect recognition for other areas on the first photovoltaic component 5 except the designated area, which can be easily understood by those skilled in the art, and will not be described in detail here. In this embodiment, the photovoltaic components can also be numbered in the controller 10 to store the defect identification results in the corresponding numbers. In this process, the first transmission component 1 can simultaneously detect the designated area of ​​the second photovoltaic component 6 to improve efficiency. The setting of the second image acquisition unit 4 is the same as the setting of the first image acquisition unit 3 in step 103, and will not be repeated here.

[0086] 106 , unloading the first photovoltaic component 5 and simultaneously transmitting the second photovoltaic component 6 to the second transmission component 2 ;

[0087] It is understandable that when the first photovoltaic component 5 is detected on the second transmission component 2, the controller 10 can control the second transmission component 2 to start unloading the first photovoltaic component 5. The unloading can be completed by a mechanical arm or an unloading transmission component. The control of unloading can be the control performed by the controller 10 in this embodiment or by a separate control system. This setting can be easily understood by those skilled in the art and will not be described in detail here. Synchronously, the first transmission component 1 can be controlled to start transmitting the second photovoltaic component 6 that has been detected in the designated area to the second transmission component 2. In this process, there is no need to start the second transmission component 2 separately, which greatly improves efficiency and makes the connection between the two workstations extremely tight.

[0088] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0089] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A photovoltaic module detection device, characterized in that: It includes: A first transmission component (1) and a second transmission component (2) are arranged in succession; The first transmission component (1) is provided with a movable first image acquisition unit (3), and the first image acquisition unit (3) is capable of moving relative to the first transmission component (1) along a first direction (a) and / or a second direction (b) to acquire a first image of a designated area on the photovoltaic component and identify and determine defect parameters in the area based on the first image; The second transmission component (2) is provided with a movable second image acquisition unit (4), and the second image acquisition unit (4) is capable of moving relative to the second transmission component (2) along the first direction (a) and / or the second direction (b) to acquire a second image of an area other than the designated area on the photovoltaic component and to identify and determine defect parameters in the area based on the second image; The first direction (a) is the transmission direction of the first transmission component (1), and the second direction (b) forms a specified angle with the first direction (a).

2. The photovoltaic module detection device according to claim 1, characterized in that: Also includes a first position sensor (7) and a second position sensor (8); The first position sensor (7) is arranged on the first transmission component (1) to detect first in-position information of the photovoltaic component, so that the first image acquisition unit (3) starts image acquisition and defect recognition for a designated area of ​​the photovoltaic component; The second position sensor (8) is arranged on the second transmission component (2) to detect second in-position information of the photovoltaic component, so that the second image acquisition unit (4) starts image acquisition and defect recognition of other areas on the photovoltaic component except the designated area.

3. The photovoltaic module detection device according to claim 2, characterized in that: Also includes a controller (10); The controller (10) is connected to the first position sensor (7), the second position sensor (8), the first image acquisition unit (3), the second image acquisition unit (4), the drive of the first transmission component (1) and the drive signal of the second transmission component (2); the controller (10) can control the drive stop of the first transmission component (1) according to the first in-position information and control the first image acquisition unit (3) to start image acquisition and defect recognition for a designated area of ​​the photovoltaic component; the controller (10) can control the drive stop of the second transmission component (2) according to the second in-position information and control the second image acquisition unit (4) to start image acquisition and defect recognition for other areas on the photovoltaic component except the designated area.

4. The photovoltaic module detection device according to claim 1, characterized in that: The first transmission component (1) and the second transmission component (2) both comprise a plurality of conveyor belts (11) spaced apart along the second direction (b).

5. The photovoltaic module detection device according to claim 1, characterized in that: The conveyor belt (11) of the first transmission component (1) and the conveyor belt (11) of the second transmission component (2) are arranged alternately along the second direction (b).

6. The photovoltaic module detection device according to claim 1, characterized in that: Also includes a moving component (9); The first image acquisition unit (3) and the second image acquisition unit (4) are connected to the first transmission component (1) and the second transmission component (2) respectively through the moving component (9); The moving assembly (9) comprises a first moving frame (91) and a second moving frame (92); The first movable frame (91) is movably arranged at two ends along the second direction (b) on both sides of the first transmission component (1) or the second transmission component (2) along the second direction (b), so that the first movable frame (91) can reciprocate relative to the first transmission component (1) or the second transmission component (2) along the first direction (a); The second mobile frame (92) is movably arranged on the first mobile frame (91), and the second mobile frame (92) is connected to the first image acquisition unit (3) or the second image acquisition unit (4), so that the second mobile frame (92) can carry the first image acquisition unit (3) or the second image acquisition unit (4) to reciprocate along the second direction (b).

7. The photovoltaic module detection device according to claim 1, characterized in that: The first image acquisition unit (3) and the second image acquisition unit (4) both comprise an image acquisition device (41) and an image processor (42); The image acquisition device (41) is a linear array camera; The image processor (42) is connected to the image acquisition device (41) by signal so as to receive the image acquired by the image acquisition device (41) and determine the defect parameters of the photovoltaic module based on the image analysis; The defect parameters include at least defect type, defect location, and defect size.

8. A detection method based on the photovoltaic module detection device according to any one of claims 1 to 7, characterized in that: It includes the following steps: Loading a first photovoltaic component (5) onto a first transmission component (1); Starting a first image acquisition unit (3) to acquire images and identify defects in a designated area of ​​the first photovoltaic component (5); Transmitting the first photovoltaic component (5) to a second transmission component (2), and loading the second photovoltaic component (6) to the first transmission component (1); The second image acquisition unit (4) is started to perform image acquisition and defect recognition on other areas of the first photovoltaic component (5) except the designated area, and the first image acquisition unit (3) is started to perform image acquisition and defect recognition on the designated area of ​​the second photovoltaic component (6); The first photovoltaic component (5) is unloaded and the second photovoltaic component (6) is simultaneously transferred to the second transfer component (2).

9. The photovoltaic module detection method according to claim 8, characterized in that: A method for starting a first image acquisition unit (3) to acquire images and identify defects in a designated area of ​​the first photovoltaic assembly (5) comprises: Stopping the first transmission component (1) according to first arrival information; According to the first in-position information, the first image acquisition unit (3) is started to move along the first direction (a) and / or the second direction (b) to acquire an image of a designated area of ​​the first photovoltaic assembly (5); The first direction (a) is the transmission direction of the first transmission component (1), and the second direction (b) forms a specified angle with the first direction (a).

10. The photovoltaic module detection method according to claim 8, characterized in that: The method of starting a second image acquisition unit (4) to acquire images and identify defects in areas other than the designated area on the first photovoltaic component (5) comprises: stopping the second transmission component (2) according to second arrival information; According to the second in-position information, the second image acquisition unit (4) is started to move along the first direction (a) and / or the second direction (b) to acquire images of other areas on the first photovoltaic component (5) except the designated area; The first direction (a) is the transmission direction of the first transmission component (1), and the second direction (b) forms a specified angle with the first direction (a).

Images