A device for video image detection and monitoring of a photovoltaic power plant

Abstract

The application provides a device for video image detection and monitoring of a photovoltaic power station, and the device takes a cableway as a running track, guarantees stability and reliability of an image acquisition component in structure, avoids problems such as photovoltaic string damage, shooting system damage, flight system damage and the like caused by unmanned aerial vehicle crash, and overcomes the disadvantages of unmanned aerial vehicle flight limitation in special airspace. In addition, car body movement control along the cableway is relatively simple, operation difficulty is reduced, and image acquisition rate is improved. In addition, the device for video image detection and monitoring of the photovoltaic power station is provided with a power component, and can provide energy for work of each component on the car body, which can be applied to environments such as some mountainous areas and the like where external power supply cannot be obtained, is favorable for reducing power supply cost, and has relatively high application universality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power station detection, and particularly relates to a video image detection and monitoring device for a photovoltaic power station. BACKGROUND

[0002] In recent years, with the rise of new energy power generation technology, especially under the background of "double carbon", solar photovoltaic power generation has developed rapidly, and photovoltaic power stations have become one of the main forces of current new energy power generation.

[0003] The photovoltaic components in the photovoltaic power station need to be regularly inspected and regularly inspected to ensure the power generation efficiency of the photovoltaic components.

[0004] Currently, the inspection of photovoltaic power stations is mainly through two means, one of which is manual detection, and the operator manually detects the photovoltaic components of the photovoltaic power station by holding a detection instrument. However, the photovoltaic power station occupies a wide area and has many terrain restrictions, so it is difficult to achieve satisfactory results through manual inspection, and the detection takes a long time and has low detection efficiency.

[0005] The second is unmanned aerial vehicle detection, which has low safety, is limited by air traffic control when taking off, has high requirements for the flight qualifications and operation level of the pilot, and has poor flexibility.

[0006] How to balance the efficiency and low cost, easy operation, etc. of photovoltaic power station detection and inspection is a technical problem that technicians in the field have always paid attention to. SUMMARY

[0007] The purpose of the present application is to provide a video image detection and monitoring device for a photovoltaic power station, which has high work efficiency and is easy to operate.

[0008] To achieve the above-mentioned purpose, one embodiment of the present application adopts the following technical scheme:

[0009] A video image detection and monitoring device for a photovoltaic power station, comprising a support, a cableway, a trolley body, an image acquisition component, an image processing component, a power supply component and a wireless communication control system;

[0010] The support is used to support the cableway above the detection target area of the photovoltaic power station; the trolley body can move along the cableway;

[0011] The image acquisition component, the wireless communication control system and the power supply component are all installed on the trolley body, the image acquisition component is used to acquire images of the detection target area; the posture of the image acquisition component relative to the trolley body is adjustable to acquire images of the photovoltaic components in the detection target area; and the power supply component is used to provide power energy for the power-consuming components on the trolley body;

[0012] The wireless communication control system can receive control instructions to control movement of the trolley along the cableway, control operating parameters of the image acquisition component, and wirelessly transfer images acquired by the image acquisition component to the image processing component.

[0013] The image processing component analyzes the images acquired by the image acquisition component to determine the operating state of the photovoltaic module.

[0014] Compared with a conventional unmanned aerial vehicle shooting system, the present application uses a cableway as a running track to structurally ensure the stability and reliability of the image acquisition component, avoids damage to photovoltaic module strings, shooting system damage, and flight system damage caused by unmanned aerial vehicle crashes, and overcomes the disadvantages of flight restrictions in special airspace. Moreover, the trolley movement control along the cableway is relatively simple, reducing the operation difficulty and improving the image acquisition rate. Moreover, the video image detection and monitoring device for photovoltaic power stations provided by the present application is provided with a power component to provide energy for the operation of each component on the trolley, which can be applied to environments where external power supply cannot be obtained in some mountainous areas and the like, and is conducive to reducing the cost of power supply access, and is widely applicable and cost-effective.

[0015] Optionally, the image acquisition component includes one or more of a visible light industrial camera, a short-wave infrared camera, and a 500-1300nm near-infrared waveband spectral camera, and the trolley has a mounting structure that can be detachably mounted with any one of the visible light industrial camera, the short-wave infrared camera, and the 500-1300nm near-infrared waveband spectral camera.

[0016] Optionally, the trolley is further provided with an infrared light source module, the infrared light source module includes an infrared light source, the infrared light source is used for irradiating a target photovoltaic module to make it in a photoluminescence state, the image acquisition component is the short-wave infrared camera, and the short-wave infrared camera can acquire images of the photovoltaic module in the photoluminescence state.

[0017] Optionally, the infrared light source module further includes a laser ranging sensor, the laser ranging sensor can measure the distance between the image acquisition component and the detected photovoltaic module to control the image acquisition component and the detected photovoltaic module to be at a predetermined distance.

[0018] Optionally, the infrared light source module is adjustable in height relative to the trolley to adjust the position of the infrared light source.

[0019] Alternatively / and, the infrared light source module can rotate circumferentially relative to the trolley.

[0020] Optionally, the trolley body has a support body that is vertically lifted, the support body is provided with a first holder and a second holder, the first holder is capable of rotating around its mounting shaft on the support body, and the image acquisition component is mounted on the first holder; the second holder is capable of rotating around its mounting shaft on the support body, and the infrared light source module is mounted on the second holder.

[0021] Optionally, the trolley body has a support body that is vertically lifted, the support body is provided with a first holder and a second holder, the first holder is capable of rotating around its mounting shaft on the support body, and the image acquisition component is mounted on the first holder; the second holder is capable of rotating around its mounting shaft on the support body, and the infrared light source module is mounted on the second holder.

[0022] Optionally, the trolley body has at least one wheel body and a motor that drives the wheel body to rotate, the wheel body has a circumferential wheel groove that is matched with the cableway, and the trolley body is rolling matched with the cableway through the wheel body.

[0023] Optionally, the power component includes a battery management module and an energy storage module, the battery management module is used to provide power for the electric components on the trolley body, and the energy storage module is used to store power and charge the battery management module.

[0024] Optionally, the remote control platform is wirelessly communicated with the wireless communication control system, the control instructions of the remote control platform are wirelessly transmitted to the wireless communication control system to control the trolley body and the image acquisition component to act, and the wireless communication control system transmits the images acquired by the image acquisition component to the image processing component on the remote control platform.

[0025] Optionally, the remote control platform is wirelessly communicated with the wireless communication control system, the control instructions of the remote control platform are wirelessly transmitted to the wireless communication control system to control the trolley body and the image acquisition component to act, and the wireless communication control system transmits the images acquired by the image acquisition component to the image processing component on the remote control platform.

[0026] Optionally, the direct current power supply device is used to electroluminesce the photovoltaic strings of the photovoltaic power station, the direct current power supply device includes a direct current power supply and an inverter, the number of output channels of the direct current power supply is consistent with the number of photovoltaic strings connected to the direct current side of the inverter, and the number of photovoltaic strings to be detected at a time is less than or equal to the number of output channels of the direct current power supply.

[0027] Optionally, the direct current power supply device includes a direct current power supply that is directly connected with the photovoltaic strings, and the output voltage and current of the direct current power supply are less than or equal to the open circuit voltage and short circuit current of the photovoltaic strings.

[0028] Optionally, the photovoltaic component of the photovoltaic power station is a crystalline silicon component, and the forward bias voltage of the direct current power supply is 0.8 to 1.0 times the open circuit voltage of the photovoltaic string; the photovoltaic component of the photovoltaic power station is a thin film component, and the forward bias voltage of the direct current power supply is greater than 1 times the open circuit voltage of the photovoltaic string.

[0029] Optionally, the image processing component can further generate a component number map for the position of the photovoltaic string in the image; the position information and the photovoltaic string number map are sequentially set as a shooting number, and a corresponding photo is taken and stored at each number. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a structural schematic diagram of a device for video image detection and monitoring of a photovoltaic power station according to an embodiment of the present application;

[0031] Figure 2 FIG. 2 is a structural schematic diagram of a device for video image detection and monitoring of a photovoltaic power station according to another embodiment of the present application;

[0032] Figure 3 FIG. 3 is a processed picture of a photo taken in a photoluminescence working condition according to an embodiment of the present application;

[0033] Figure 4 FIG. 4 is a processed picture of a photo taken in an electroluminescence working condition according to an embodiment of the present application.

[0034] wherein, Figures 1 to 2 The correspondence between the reference signs and the component names in the drawings is as follows:

[0035] 1 support; 10 support rod; 2 trolley body; 11 support body; 13 connecting frame; 12 wheel body; 121 first wheel body; 122 second wheel body; 123 third wheel body; 3 image acquisition component; 4 wireless communication control system; 51 battery management module; 52 energy storage module; 6 first gimbal; 7 second gimbal; 8 first rotating motor; 9 second rotating motor; 14 infrared light source module;

[0036] 20 cableway; 201 first cableway; 202 second cableway; 2a screw. DETAILED DESCRIPTION

[0037] The features and exemplary embodiments of various aspects of the present application will be described in detail below, in order to make the purposes, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0038] Reference should be made to Figures 1 to 2 , Figure 1 FIG. 1 is a structural schematic diagram of a device for video image detection and monitoring of a photovoltaic power station according to an embodiment of the present application;Figure 2 The structural schematic diagram of the device for video image detection and monitoring of the photovoltaic power station in another specific example of the present application.

[0039] The present application provides a device for video image detection and monitoring of the photovoltaic power station, which comprises a support 1, a cableway, a trolley body 2, an image acquisition component 3, an image processing component, a power supply component and a wireless communication control system 4.

[0040] The support 1 mainly serves to support the cableway, and the support 1 supports the cableway above the detection target area of the photovoltaic power station; the support 1 can have various forms, for example, the support 1 can comprise a plurality of support rods 10, and the cableway is arranged between the support rods 10. Other forms of the support 1 are not specifically limited herein as long as the technical effects herein can be achieved. The cableway can be a steel wire rope, and of course can also be a steel rail and the like.

[0041] In the present application, the trolley body 2 can move along the cableway, and there are many ways for the trolley body 2 to move relative to the cableway. The trolley body 2 and the cableway can achieve relative sliding through rollers, and of course can also achieve relative sliding through other ways, such as slip rings and the like. The trolley body 2 mainly serves to bear.

[0042] In the present application, the image acquisition component 3, the wireless communication control system 4 and the power supply component are all installed on the trolley body 2, the image acquisition component 3 is used to acquire images of the photovoltaic modules in the detection target area; the image acquisition component 3 can be a camera, which continuously takes pictures during the movement of the trolley body 2, and the health status of the photovoltaic modules is analyzed according to the pictures in the later stage. Of course, the image acquisition component 3 can also be a video camera, which records videos of the photovoltaic modules during the movement of the trolley, and the current working state of the photovoltaic modules is analyzed according to the videos in the later stage.

[0043] Moreover, in the present application, the posture of the image acquisition component 3 relative to the trolley body 2 is adjustable to acquire images of the photovoltaic modules in the detection target area; that is, the posture of the image acquisition component 3 can be adjusted, so that the images of the photovoltaic modules can be clearly acquired, and the flexibility of the system is improved. The image acquisition component 3 can be movably connected with the trolley body 2 to achieve the change of one or several of the six degrees of freedom of the image acquisition component 3.

[0044] In the present application, the power supply component is used to provide power energy for the power-consuming components on the trolley body 2; the power supply component can be a conventional battery, a rechargeable battery, and of course can also be a solar cell and the like.

[0045] In the present application, the wireless communication control system 4 can receive a control instruction to control the movement of the trolley body 2 along the cableway; the control instruction can be issued by an operator, and of course can also be pre-stored in the controller. When the operator starts the start button, the controller automatically sends the control instruction to the wireless communication control system 4.

[0046] The wireless communication control system 4 controls the working condition parameters of the image acquisition component 3 according to the received control instructions to obtain a clear picture.

[0047] The wireless communication control system 4 in the application can wirelessly transmit the image obtained by the image acquisition component 3 to the image processing component.

[0048] The image processing component in the application judges the working state of the photovoltaic module by analyzing and processing the image obtained by the image acquisition component 3. The image processing component judges the working state of the photovoltaic module by analyzing, processing, comparing, etc. the received picture or video.

[0049] Compared with the traditional unmanned aerial vehicle shooting system, the application uses a cableway as a running track to ensure the stability and reliability of the image acquisition component 3 in structure, avoids the damage of the photovoltaic module string, the shooting system, and the flight system caused by the crash of the unmanned aerial vehicle, and overcomes the disadvantages of the flight restriction of the unmanned aerial vehicle in special airspace. Moreover, the movement control of the trolley body 2 along the cableway is relatively simple, which reduces the operation difficulty and improves the image acquisition rate. The device for video image detection and monitoring of the photovoltaic power station provided by the application is provided with a power component, which can provide energy for the working of each component on the trolley body 2. This can be applied to some special places such as mountains where external power supply cannot be obtained, and is beneficial to reducing the cost of power supply and has a wide application and high cost performance.

[0050] The image acquisition component 3 in the application includes one or more of a visible light industrial camera, a short-wave infrared camera, and a 500-1300nm near-infrared waveband spectral camera, and the trolley body 2 has a mounting structure that can be detachably mounted with any one of the visible light industrial camera, the short-wave infrared camera, and the 500-1300nm near-infrared waveband spectral camera. The mounting structure can be a threaded hole of different specifications, such as M8, M3 / 8, M1 / 4, etc. The number and arrangement of the threaded holes can be reasonably customized according to the specific camera product.

[0051] In this way, suitable image acquisition components 3 can be installed on the trolley body 2 according to different purposes to obtain images that meet the requirements. The trolley body 2 suspended on the cableway has a relatively light overall weight and a relatively simple structure, and has fewer components, which facilitates the arrangement of the components.

[0052] In a specific example, when the photovoltaic power station is inspected, the visible light industrial camera can be hung on the trolley body 2; if the photovoltaic component of the photovoltaic power station is detected for hidden crack defects, the short-wave infrared camera can be hung on the trolley body 2; if the photovoltaic component is detected for hot spot defects, the 500-1300nm near-infrared waveband spectral camera can be hung on the trolley body 2.

[0053] Of course, one or more of the visible light industrial camera, the short-wave infrared camera, and the 500-1300nm near-infrared waveband spectral camera can be simultaneously integrated on the trolley body 2, without the need for on-site installation and disassembly.

[0054] In a specific example, the trolley body 2 is also provided with an infrared light source module 14, which includes an infrared light source (not shown in the figure, but does not hinder those skilled in the art to understand the technical solutions herein), which is used to irradiate the target photovoltaic component to be in a photoluminescence state. The image acquisition component 3 can be a short-wave infrared camera, which can acquire the image of the photovoltaic component in the photoluminescence state.

[0055] The infrared light source can release near-infrared light with a peak at about 1000-1300nm, and then use a high-sensitivity and high-resolution short-wave infrared camera for photosensing and imaging. The light intensity after imaging is proportional to the concentration of non-equilibrium minority carriers at the corresponding position. Since defects can reduce the concentration of minority carriers in the region and thus weaken the fluorescence effect, after imaging, it appears as dark spots, lines or certain areas. Therefore, photoluminescence can be used to determine whether the sample has defects, impurities and other factors that ultimately affect the efficiency of the battery.

[0056] The infrared light source module 14 also includes a laser ranging sensor (not shown in the figure, but does not hinder those skilled in the art to understand the technical solutions herein), which can measure the distance between the image acquisition component 3 and the detected photovoltaic component, so as to control the image acquisition component 3 and the detected photovoltaic component to be at a predetermined distance. The laser ranging sensor can detect the distance between the image acquisition component 3 and the photovoltaic component of the photovoltaic string, so as to adjust the position of the image acquisition component 3, so that the image acquisition component 3 works at the best height position, to ensure accurate focusing and framing.

[0057] The near-infrared waveband spectral camera is used to shoot the polycrystalline silicon component, and the electroluminescence spectral peak of the polycrystalline silicon component is between 1100-1200nm, so the near-infrared waveband spectral camera with a wavelength of more than 700nm is used.

[0058] In the present application, the infrared light source module 14 is adjustable in height position relative to the trolley body 2 to adjust the position of the infrared light source; the infrared light source module 14 can rotate circumferentially relative to the trolley body 2. The movement of the infrared light source module 14 relative to the trolley body 2 can be executed by corresponding execution components, such as setting a motor or a telescopic cylinder to realize height and circumferential position adjustment.

[0059] The turning on and off of the infrared light source in the infrared light source module 14 and the movement relative to the trolley body 2 can all be controlled by the operator, and the control instructions of the operator can be received by the wireless communication control system 4 and then transmitted to the relevant execution components.

[0060] In a specific example, the trolley body 2 has a support body 11 that rises and falls in the vertical direction, and the support body 11 is provided with a first holder 6 and a second holder 7, the first holder 6 can rotate circumferentially around its mounting shaft with the support body, the mounting shaft can be vertical, of course, the mounting shaft can also have a certain angle relative to the vertical direction. The image acquisition component 3 is installed on the first holder 6; the second holder 7 can rotate circumferentially around its mounting shaft with the support body, and the infrared light source module 14 is installed on the second holder 7.

[0061] In this example, the support body moves in the vertical direction while driving the first holder 6 and the second holder 7 to move in the vertical direction, and then the image acquisition component 3 installed on the first holder 6 and the infrared light source module 14 installed on the second holder 7 can move in the vertical direction at the same time, the mechanism has high integration and light weight.

[0062] Among them, the device for video image detection and monitoring of photovoltaic power station includes first rotating motor 8 and second rotating motor 9, first rotating motor 8 drives first holder 6 to rotate circumferentially, second rotating motor 9 drives second holder 7 to rotate circumferentially.

[0063] In the above embodiments, the device for video image detection and monitoring of photovoltaic power station, the trolley body 2 has at least one wheel body and a motor driving the wheel body to rotate, the wheel body has a circumferential wheel groove, the wheel groove cooperates with the cableway, and the trolley body 2 is rollingly matched with the cableway through the wheel body. Among them, one of each wheel body can be a driving wheel, and the others can be driven wheels, so that the connection structure between the motor and the wheel body is relatively simple.

[0064] The setting of the wheel body on the trolley body 2 can only realize that the trolley body 2 is safely and stably suspended on the cableway and can smoothly move along the cableway.

[0065] In the present application, the cableway on the support 1 can be a single cableway or a double cableway, and the single cableway means that the trolley body 2 is suspended on a cableway and moves along a cableway; see Figure 1 , Figure 1The specific example of a single cable is shown, and the trolley body 2 is suspended on the cable by the wheel body, and the cable and the left and right wheel bodies form a stable inverted V-shaped structure; the double cable refers to the trolley body 2 being suspended on two cables, and the trolley body 2 cooperates with the two cables to slide simultaneously. Figure 2 The specific example of a double cable is shown, and the trolley body 2 is suspended on the upper and lower two cables by the upper and lower two layers of wheel bodies, that is, the cable includes a parallel first cable 201 and a second cable 202, the trolley body 2 is provided with a connecting frame 13, the connecting frame 13 is provided with a third wheel body 123, the third wheel body 123 is supported and cooperated with the second cable 202, the first wheel body 121 is supported and cooperated with the first cable 201, and of course a second wheel body 122 can be provided, which is located below the first cable 201, wherein the second wheel body 122 can be connected with the motor as a driving wheel, and the other wheels are driven wheels.

[0066] The connecting frame 13 can be connected to the trolley body 2 by a screw 2a. The second cable 202 mainly plays a role in ensuring the safe sliding of the trolley body 2.

[0067] In the above embodiments, the power supply component includes a battery management module 51 and an energy storage module 52, the battery pipeline module 51 is used to provide electric energy for the electric components on the trolley body 2, and the energy storage module 52 is used to store electric energy, and the energy storage module 52 can charge the battery management module 51.

[0068] The control mode of the device for video image detection and monitoring of the photovoltaic power station in the application can have multiple ways, such as near-end control and remote control. The near-end control can be realized by the following way: the device for video image detection and monitoring of the photovoltaic power station further includes a handheld remote controller, the handheld remote controller is in wireless communication with the wireless communication control system 4, and the control instructions of the handheld remote controller are wirelessly transmitted to the wireless communication control system 4 to control the actions of the trolley body 2 and the image acquisition component 3. This control mode has relatively high flexibility and can be flexibly controlled according to the on-site conditions.

[0069] The remote control refers to: the device for video image detection and monitoring of the photovoltaic power station further includes a remote control platform, the remote control platform is in wireless communication with the wireless communication control system 4, and the control instructions of the remote control platform are wirelessly transmitted to the wireless communication control system 4 to control the actions of the trolley body 2 and the image acquisition component 3, and the wireless communication control system 4 transmits the images acquired by the image acquisition component 3 to the image processing component on the remote control platform.

[0070] The remote control is conducive to the integrated control platform, can realize the automatic operation of the equipment, and can realize the detection and monitoring of the photovoltaic power station without personnel on site.

[0071] The device for video image detection and monitoring of the photovoltaic power station further comprises a direct current power supply device for electroluminescence of the photovoltaic string of the photovoltaic power station. The direct current power supply device can comprise a direct current power supply and an inverter, the number of output channels of the direct current power supply is consistent with the number of the photovoltaic strings connected to the direct current side of the inverter, and the number of the photovoltaic strings to be detected at one time is less than or equal to the number of the output channels of the direct current power supply.

[0072] Of course, the direct current power supply device can also only comprise a direct current power supply, which is directly connected to the photovoltaic string, wherein the output voltage and the current of the direct current power supply are less than the open circuit voltage and the short circuit current of the photovoltaic string.

[0073] For the crystalline silicon module, the output voltage of the direct current power supply is 0.8 to 1.0 times the open circuit voltage of the photovoltaic string; for the thin film module, the output voltage of the direct current power supply is more than 1 times the open circuit voltage of the photovoltaic string.

[0074] In addition, the image processing component can also generate a module number picture of the position of the photovoltaic string module in the image; the position information and the module number picture of each photovoltaic string are sequentially set as a shooting number, and the corresponding picture is stored by shooting at each number, so that the operator can observe intuitively.

[0075] In a specific example, it is assumed that the detected photovoltaic string is connected to a string inverter, one photovoltaic string is connected, the photovoltaic string is composed of twenty-three photovoltaic modules in series, and the open circuit voltage of the photovoltaic module is 48V. Therefore, the number of output channels of the selected independent voltage source is 1, and the maximum output voltage is 1100V (slightly lower than the open circuit voltage of the string 1104V), which meets the requirements of this test.

[0076] The numbers of the strings to be detected this time are recorded as 001-012, 001 is two photovoltaic modules, and 012 is one photovoltaic module, and the shooting task formed by the position information is issued to the image acquisition system.

[0077] Based on the principle of clearly and completely shooting one photovoltaic module at one time, a 15mm focal length lens is selected this time, the height distance between the image acquisition component 3 and the photovoltaic module is determined to be 3-5m, the shutter time is set to 8s, the aperture size is F4.5, and the sensitivity is ISO800.

[0078] The connection of the direct current power supply and the photovoltaic string is completed, the direct current power supply is turned on to apply a set forward bias voltage to the connected photovoltaic string, and after the output voltage is stable, the shooting is started.

[0079] Of course, the short-wave infrared laser lamp can be enabled at the same time, or when part of the photovoltaic components are not powered on, or cannot be powered on, or are limited by other conditions, the step of connecting the direct current power supply is not performed, the near-infrared light with a wave peak around 1150nm is released, and then the high-sensitivity and high-resolution camera is used for light sensing and imaging. The picture taken by the image acquisition component 3 is as shown in Figure 3

[0080] After the string assembly is completed, the direct current power supply is turned off. After the images of the electroluminescence and the photoluminescence are imaged respectively, the images are spliced and compared through the image processing component. The components are carefully checked in the electroluminescence detection or in the area where the electroluminescence detection fails, or the experimental components are further detected by the photoluminescence after the electroluminescence detection.

[0081] The above describes in detail the device for video image detection and monitoring of a photovoltaic power station provided by the present application. The principles and implementation modes of the present application are described by using specific examples in this paper. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.​

Claims

1. A device for video image detection and monitoring of a photovoltaic power plant, characterized in that, The device comprises a support, a cableway, a trolley body, an image acquisition component, an image processing component, a power supply component and a wireless communication control system. The support is used to support the cableway above the detection target area of the photovoltaic power station. The image acquisition component, the wireless communication control system and the power supply component are all installed on the trolley body. The image acquisition component is used to acquire images of the detection target area. The image acquisition component is adjustable in posture relative to the trolley body to acquire images of photovoltaic modules in the detection target area. The power supply component is used to provide power energy for power-consuming components on the trolley body. The wireless communication control system can receive control instructions to control the trolley body to move along the cableway, control working condition parameters of the image acquisition component and wirelessly transmit images acquired by the image acquisition component to the image processing component. The image processing component analyzes and processes images acquired by the image acquisition component to determine the working state of the photovoltaic modules.

2. The device for video image detection and monitoring of photovoltaic power stations according to claim 1, characterized in that, The trolley body is further provided with an infrared light source module.

3. The device for video image detection and monitoring of photovoltaic power stations according to claim 2, characterized in that, The infrared light source module comprises an infrared light source.

4. The device for video image detection and monitoring of photovoltaic power stations according to claim 3, characterized in that, The infrared light source is used to irradiate target photovoltaic modules to make them in a photoluminescence state.

5. The device for video image detection and monitoring of photovoltaic power stations according to claim 3, characterized in that, The image acquisition component comprises a short-wave infrared camera. The device further comprises a direct current power supply device. The direct current power supply device comprises a direct current power supply. The image acquisition component comprises a near-infrared waveband spectral camera. When in use, the direct current power supply is turned on to apply a set forward bias voltage to the connected photovoltaic module string. After the output voltage stabilizes, the near-infrared waveband spectral camera starts shooting to acquire photovoltaic modules in an electroluminescence state. The infrared light source is used to irradiate and the short-wave infrared camera is used to acquire images of photovoltaic modules in the photoluminescence state. The image acquisition component further comprises a visible light industrial camera. The trolley body has a mounting structure that can detachably mount any one of the visible light industrial camera, the short-wave infrared camera and the near-infrared waveband spectral camera. The near-infrared waveband spectral camera is a 500-1300nm near-infrared waveband spectral camera. The infrared light source module further comprises a laser ranging sensor. The laser ranging sensor can measure the distance between the image acquisition component and the detected photovoltaic module to control the image acquisition component and the detected photovoltaic module to be at a predetermined distance. The infrared light source module is adjustable in height position relative to the trolley body to adjust the position of the infrared light source. Alternatively / and, the infrared light source module can rotate relative to the trolley body in the circumferential direction.

6. The device for video image detection and monitoring of photovoltaic power stations according to claim 5, characterized in that, The trolley body has a support body that is raised in a vertical direction, the support body is provided with a first holder and a second holder, the first holder can rotate around an installation shaft of the support body, and the image acquisition component is installed on the first holder; the second holder can rotate around an installation shaft of the support body, and the infrared light source module is installed on the second holder.

7. The device for video image detection and monitoring of photovoltaic power stations according to claim 6, characterized in that, The trolley body comprises a first rotating motor and a second rotating motor, the first rotating motor drives the first holder to rotate, and the second rotating motor drives the second holder to rotate.

8. The device for video image detection and monitoring of photovoltaic plants according to any of the claims from 1 to 7, characterized in that, The trolley body has at least one wheel body and a motor that drives the wheel body to rotate, the wheel body has a circumferential wheel groove, the wheel groove is matched with the cableway, and the trolley body is matched with the cableway by rolling.

9. The device for video image detection and monitoring of photovoltaic plants according to any of the claims from 1 to 7, characterized in that, The power supply component comprises a battery management module and an energy storage module, the battery management module is used for providing electric energy for the electric components on the trolley body, and the energy storage module is used for storing electric energy and charging the battery management module.

10. The device for video image detection and monitoring of photovoltaic power stations according to any of claims 1 to 7, characterized in that, The trolley body further comprises a handheld remote controller, the handheld remote controller is wirelessly communicated with the wireless communication control system, and the control instructions of the handheld remote controller are wirelessly transmitted to the wireless communication control system to control the trolley body and the image acquisition component to act. Alternatively, the trolley body further comprises a remote control platform, the remote control platform is wirelessly communicated with the wireless communication control system, the control instructions of the remote control platform are wirelessly transmitted to the wireless communication control system to control the trolley body and the image acquisition component to act, and the wireless communication control system transmits the images acquired by the image acquisition component to the image processing component on the remote control platform.

11. The device for video image detection and monitoring of photovoltaic power stations according to any of claims 1 to 7, characterized in that, The direct-current power supply device further comprises an inverter, the number of output channels of the direct-current power supply is consistent with the number of photovoltaic strings connected to the direct-current side of the inverter, and the number of photovoltaic strings to be detected at a time is less than or equal to the number of output channels of the direct-current power supply. Alternatively, the direct-current power supply is directly connected to the photovoltaic strings, and the output voltage and current of the direct-current power supply are less than or equal to the open-circuit voltage and short-circuit current of the photovoltaic strings.

12. The device for video image detection and monitoring of photovoltaic power stations according to claim 11, characterized in that, The photovoltaic components of the photovoltaic power station are crystalline silicon components, the forward bias voltage of the direct-current power supply is 0.8 to 1.0 times the open-circuit voltage of the photovoltaic strings, the photovoltaic components of the photovoltaic power station are thin-film components, and the forward bias voltage of the direct-current power supply is greater than 1 times the open-circuit voltage of the photovoltaic strings.

13. The device for video image detection and monitoring of photovoltaic power stations according to any of claims 1 to 7, characterized in that, The image processing component can further generate a component number map of the positions of the photovoltaic string components in the image, sequentially set the position information and the photovoltaic string number maps as shooting numbers, and take and store corresponding photos at each number.

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