Ash deposition monitoring method, system and equipment for photovoltaic module

Abstract

The invention relates to the technical field of photovoltaic module monitoring, and discloses a dust deposition monitoring method and system for a photovoltaic module. The method comprises the steps that illumination intensity sensors are installed at the four corners and the center position of a photovoltaic piece area respectively, and the dust deposition conditions of different areas of a photovoltaic module are monitored; monitoring the output current of the photovoltaic module in real time; obtaining a comprehensive ash deposition value of each area by combining data of an illumination intensity sensor; and when the comprehensive ash deposition value exceeds a preset threshold value, generating ash deposition early warning information and generating a cleaning suggestion report. Compared with the prior art that dust deposition monitoring depends on a single sensor or simple current data, and the dust deposition degree cannot be accurately detected especially under the conditions of complex environments such as multiple wind and uneven dust concentration, the multi-angle sensor arrangement and the current attenuation data are combined, so that the dust deposition degree can be accurately detected. Real-time full-coverage monitoring of the dust deposition condition of the photovoltaic area is realized, so that the error problem caused by a single data source is avoided, and the dust deposition monitoring precision and the cleaning efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of dust accumulation monitoring for photovoltaic modules, and in particular relates to a dust accumulation monitoring method, system and equipment for photovoltaic modules. Background Art

[0002] At present, the dust accumulation problem of photovoltaic modules has become one of the important factors affecting the efficiency of photovoltaic power generation. As time goes by, dust gradually accumulates on the surface of photovoltaic modules, resulting in a decrease in light transmittance, thereby reducing power generation efficiency. Existing dust accumulation monitoring technology mainly relies on a single sensor for monitoring, usually only performs dust accumulation detection in local areas, or only relies on current change data to estimate the degree of dust accumulation. This method has obvious shortcomings in practical applications. For example, single sensor monitoring has the problem of insufficient coverage and cannot fully reflect the overall dust accumulation situation of the photovoltaic area; relying only on current data to monitor dust accumulation is also easily affected by other environmental factors such as temperature and humidity, resulting in insufficient accuracy of monitoring results. Existing technologies cannot fully meet the needs of dust accumulation monitoring in complex environments, especially when there are frequent wind and sand, uneven dust distribution or complex layout of photovoltaic modules, the existing monitoring methods are difficult to accurately reflect the actual situation of dust accumulation. Therefore, there is an urgent need for a dust accumulation monitoring method that combines multi-sensor data with current monitoring information, which can still achieve accurate monitoring of photovoltaic areas under different environmental conditions, so as to improve the comprehensiveness of monitoring and the accuracy of data, and thus optimize the cleaning decision and power generation efficiency of photovoltaic modules. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to propose a dust accumulation monitoring method for photovoltaic modules, aiming to solve the technical problem that the prior art relies on a single sensor or simple current data for dust accumulation monitoring, especially in complex environments such as windy and uneven dust concentration, and cannot accurately detect the degree of dust accumulation.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a dust accumulation monitoring method for photovoltaic modules.

[0005] The dust accumulation monitoring method for photovoltaic modules comprises:

[0006] Step S10: installing light intensity sensors at the four corners and the center of each photovoltaic area, wherein the four corner sensors are used to monitor the dust accumulation data at the edges of the area, and the center sensor is used to monitor the dust accumulation data at the center of the area;

[0007] The light intensity sensor compares the standard light intensity P before dust accumulation. clean The light intensity P after dust accumulation measured The difference is used to evaluate the degree of dust accumulation on the surface of photovoltaic modules. The specific formula is:

[0008]

[0009] Among them, the value of dust accumulation degree Q is between 0 and 1, and the smaller the value, the more serious the dust accumulation;

[0010] Step S20: Install a current sensor in each photovoltaic area to monitor the output current of the photovoltaic components in the area. The current sensor collects current data I in real time. current and with the preset standard current I clean Compare and calculate the current attenuation I loss :

[0011] I loss =I current -I clean ;

[0012] Step S30: Based on the current attenuation I loss , the dust accumulation estimate D based on current decay is calculated by the following formula current :

[0013]

[0014] Step S40: The dust accumulation values ​​in the light intensity sensors at the four corners are collected by the central sensor, and the comprehensive dust accumulation value of the area is calculated using the following formula:

[0015]

[0016] Among them, D avg is the comprehensive dust accumulation value, D center is the dust accumulation value of the center sensor, D i is the dust accumulation value of the i-th corner sensor, D current is the dust accumulation estimation value based on current decay, γ is the weight coefficient of current data;

[0017] Step S50: When the comprehensive dust accumulation value D avg Exceeding the preset dust accumulation threshold D threshold When the dust accumulation warning information is generated, the system transmits the information to the back-end of the console for data analysis via wireless communication;

[0018] Step S60: After receiving the dust accumulation warning information, the console backend prioritizes the processing of the comprehensive dust accumulation value D avg Exceeds the preset dust accumulation threshold and the current attenuation I loss For areas where the current is greater than the preset threshold, the cleaning time is determined by comprehensively analyzing the dust accumulation degree, current attenuation data, and meteorological conditions, and a cleaning recommendation report is generated.

[0019] Preferably, in step S10, the light intensity sensor is connected to the back end of the console via a wireless network.

[0020] Preferably, in step S10, the sampling frequency of the sensor supports optimization adjustment according to real-time weather conditions to reduce system energy consumption.

[0021] Preferably, in step S20, the current sensor is connected to the rear end of the console via a wired connection.

[0022] Preferably, in step S10, the model of the light sensor is TSL2561.

[0023] Preferably, in step S50, the generated warning information is pushed to the user terminal via email.

[0024] Preferably, in step S60, the cleaning recommendation report supports exporting to PDF format and directly printing via a built-in associated printer.

[0025] The present invention also provides a dust accumulation monitoring system for photovoltaic modules, comprising:

[0026] Light intensity sensor module, used to install light intensity sensors at the four corners and the center of each photovoltaic area, wherein the four corner sensors are used to monitor the dust accumulation data at the edge of the area, and the center sensor is used to monitor the dust accumulation data at the center of the area;

[0027] The current sensor module is used to install a current sensor in each photovoltaic area to monitor the output current of the photovoltaic components in the area. The current sensor collects current data in real time. current and with the preset standard current I clean Compare and calculate the current attenuation I loss :

[0028] I loss =I current -I clean ;

[0029] The dust accumulation estimation module is used to estimate the dust accumulation based on the current decay I loss , the dust accumulation estimate D based on current decay is calculated by the following formula current :

[0030]

[0031] The data fusion module is used to collect dust accumulation values ​​from the light intensity sensors at the four corners through the central sensor, and calculate the comprehensive dust accumulation value of the area using the following formula:

[0032]

[0033] Among them, D avg is the comprehensive dust accumulation value, D center is the dust accumulation value of the center sensor, D i is the dust accumulation value of the i-th corner sensor, D current is the dust accumulation estimation value based on current decay, γ is the weight coefficient of current data;

[0034] The early warning generation module is used to generate an early warning signal when the comprehensive dust accumulation value D avg Exceeding the preset dust accumulation threshold D threshold When the dust accumulation warning information is generated, the system transmits the information to the back-end of the console for data analysis via wireless communication;

[0035] The cleaning suggestion module is used to control the dust accumulation warning information received by the back end of the console, and give priority to the dust accumulation with serious current attenuation I loss For areas where the current is greater than the preset threshold, the cleaning time is determined by comprehensively analyzing the dust accumulation degree, current attenuation data, and meteorological conditions, and a cleaning recommendation report is generated.

[0036] The present invention also provides a dust accumulation monitoring device for photovoltaic modules, comprising a memory, a processor, and a dust accumulation monitoring program for photovoltaic modules stored in the memory and executable on the processor. When the dust accumulation monitoring program for photovoltaic modules is executed by the processor, the dust accumulation monitoring method for photovoltaic modules is implemented.

[0037] The present invention also provides a computer program product, including a dust accumulation monitoring program for photovoltaic modules, wherein the dust accumulation monitoring program for photovoltaic modules implements the dust accumulation monitoring method for photovoltaic modules when the dust accumulation monitoring program for photovoltaic modules is executed by a processor.

[0038] The beneficial effect of the present invention is that compared with the prior art which relies on a single sensor or simple current data for dust accumulation monitoring, especially in complex environments such as windy and uneven dust concentration, the technical problem of being unable to accurately detect the degree of dust accumulation, the present application combines multi-angle sensor arrangement with current attenuation data to achieve real-time full coverage monitoring of the dust accumulation situation in the photovoltaic area, thereby avoiding the error problem caused by a single data source and improving the accuracy of dust accumulation monitoring and cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1The figure is a flow chart of a first embodiment of a dust accumulation monitoring method for photovoltaic modules according to the present invention.

[0041] Figure 2 The present invention is a schematic diagram of equipment for a method for monitoring dust accumulation of photovoltaic modules. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Embodiment 1: Figure 1 , which is a flow chart of a first embodiment of a dust accumulation monitoring method for photovoltaic modules according to the present invention, provides a first embodiment of a dust accumulation monitoring method for photovoltaic modules according to the present invention.

[0044] In a first embodiment, the dust accumulation monitoring method for photovoltaic modules includes:

[0045] Step S10: installing light intensity sensors at the four corners and the center of each photovoltaic area, wherein the four corner sensors are used to monitor the dust accumulation data at the edges of the area, and the center sensor is used to monitor the dust accumulation data at the center of the area;

[0046] The light intensity sensor compares the standard light intensity P before dust accumulation. clean The light intensity P after dust accumulation measured The difference is used to evaluate the degree of dust accumulation on the surface of photovoltaic modules. The specific formula is:

[0047]

[0048] Among them, the value of dust accumulation degree Q is between 0 and 1, and the smaller the value, the more serious the dust accumulation;

[0049] It should be noted that the layout of the sensors is optimized according to the geometric structure and wind direction distribution of the photovoltaic area. The sensors at the four corners are mainly used to capture the dust accumulation in the edge areas of the photovoltaic area. These areas may have more serious dust accumulation due to factors such as wind direction and terrain. The central sensor is installed in the central position of the area and is responsible for monitoring the dust accumulation in the central area of ​​the area. The sensor network arranged in this way can cover all key areas of the photovoltaic area, ensure the comprehensiveness of the dust accumulation monitoring data, and avoid monitoring blind spots caused by improper layout of a single sensor. At the same time, the combination of data from the four-corner sensors and the central sensor helps to accurately assess the degree of dust accumulation in the entire area, providing an accurate basis for subsequent data fusion and cleaning decisions.

[0050] Step S20: Install a current sensor in each photovoltaic area to monitor the output current of the photovoltaic components in the area. The current sensor collects current data I in real time. current and with the preset standard current I clean Compare and calculate the current attenuation I loss :

[0051] I loss =I current -I clean ;

[0052] It should be noted that the current sensor collects the output current I of the photovoltaic module in real time. current and compare it with the standard current I clean For comparison. Standard current I clean It is the rated output current of the photovoltaic module in a clean state, which is usually determined in advance during installation or maintenance. loss , we can estimate the impact of dust accumulation on the power generation efficiency of PV modules. The magnitude of current attenuation directly reflects the degree of shading of PV modules by dust accumulation. The greater the current attenuation, the more serious the dust accumulation and the more significant the decline in power generation efficiency.

[0053] It can be understood that this step helps to combine the data of the light intensity sensor to further verify and correct the dust accumulation monitoring results, thereby improving the accuracy and reliability of the system.

[0054] Step S30: Based on the current attenuation I loss , the dust accumulation estimate D based on current decay is calculated by the following formula current :

[0055]

[0056] It should be noted that, in step S30, based on the current attenuation amount I loss Calculate the estimated dust accumulation value Dcurrent The formula is to quantify the effect of dust accumulation on the power generation efficiency of photovoltaic modules. The constant 250 in the formula is a proportionality factor used to convert the current attenuation into an estimated value of the degree of dust accumulation. This coefficient can be calibrated through experimental data in order to standardize the relationship between current change and the effect of dust accumulation so that D current It reflects the influence of dust accumulation on the output performance of components.

[0057] It can be understood that the current attenuation I loss It reflects the actual current loss caused by dust accumulation in photovoltaic modules. loss With standard current I clean The ratio of the ...

[0058] It should be understood that in order to improve the accuracy of dust accumulation monitoring, the specific value of the proportional coefficient 250 can be adjusted according to different photovoltaic module types, environmental conditions and dust accumulation levels. After calibration, the coefficient can accurately reflect the relationship between current attenuation and dust accumulation, thereby providing the system with more reliable dust accumulation monitoring data.

[0059] Step S40: The dust accumulation values ​​in the light intensity sensors at the four corners are collected by the central sensor, and the comprehensive dust accumulation value of the area is calculated using the following formula:

[0060]

[0061] Among them, D avg is the comprehensive dust accumulation value, D center is the dust accumulation value of the center sensor, D i is the dust accumulation value of the i-th corner sensor, D current is the dust accumulation estimation value based on current decay, γ is the weight coefficient of current data;

[0062] It should be noted that the center sensor collects dust accumulation data D from the four corner sensors. i (where i = 1, 2, 3, 4) and its own dust accumulation data D center , combined with the dust accumulation estimation D based on current decay calculation current , comprehensively calculate the overall dust accumulation degree D of the photovoltaic area avg In this formula, γ is the weight coefficient of the current data, which is used to adjust the impact of current decay on the dust accumulation assessment results. Through this data fusion method, the dust accumulation situation in different areas and the direct impact of current decay can be considered at the same time, so as to more accurately evaluate the overall impact of dust accumulation on photovoltaic modules.

[0063] It is understandable that since the dust accumulation in different areas of the area may be different, the light intensity sensors D at the four corners i and center sensor D center The data provided by the current decay D provides a comprehensive monitoring of the dust distribution on the surface of the photovoltaic module. current Supplementing the data from physical sensors can make up for possible blind spots or errors in the sensors, making dust accumulation assessment more accurate.

[0064] It should be understood that the weight coefficient γ in the formula can be adjusted according to the actual operation and environmental conditions of the photovoltaic system to ensure that the influence of the current data and the weight of the light intensity sensor data match reasonably. By reasonably adjusting γ, the weight of the current data in specific situations (such as when dust accumulation is severe) can be enhanced to further improve the accuracy of the dust accumulation monitoring results.

[0065] Step S50: When the comprehensive dust accumulation value D avg Exceeding the preset dust accumulation threshold D threshold When the dust accumulation warning information is generated, the system transmits the information to the back-end of the console for data analysis via wireless communication;

[0066] It should be noted that when the comprehensive dust accumulation value D avg Exceeding the preset dust accumulation threshold D threshold The system will automatically generate dust accumulation warning information when the dust accumulation reaches or exceeds this threshold. This threshold is set according to the specific requirements and environmental conditions of the photovoltaic module. When the dust accumulation reaches or exceeds this value, it may have a significant impact on the power generation efficiency of the photovoltaic module. The system transmits this warning information to the back end of the console through wireless communication technology (such as LoRa, Wi-Fi or cellular network) for timely data analysis and processing.

[0067] Step S60: After receiving the dust accumulation warning information, the console backend prioritizes the processing of the comprehensive dust accumulation value D avg Exceeds the preset dust accumulation threshold and the current attenuation I loss For areas where the current is greater than the preset threshold, the cleaning time is determined by comprehensively analyzing the dust accumulation degree, current attenuation data, and meteorological conditions, and a cleaning recommendation report is generated.

[0068] It should be noted that after the back-end of the console receives the dust accumulation warning information, it will prioritize the dust accumulation situation. The system will first determine the priority areas based on the severity of the dust accumulation and the current attenuation. When the current attenuation exceeds the preset threshold, it means that the dust accumulation has had a significant impact on the power generation efficiency of the photovoltaic module, so these areas need to be cleaned first. The back-end of the console will also combine the current dust accumulation situation, current attenuation data, and weather conditions such as wind speed, rainfall forecast, etc., and generate a cleaning recommendation report through analysis to help operation and maintenance personnel decide the best time and method for cleaning.

[0069] It is understandable that the combination of current attenuation and dust accumulation data can more accurately reflect the actual dust accumulation impact of the photovoltaic area. By prioritizing areas with greater current attenuation, power losses caused by dust accumulation can be effectively reduced. In addition, combined with weather conditions such as upcoming rains, which may naturally clean photovoltaic modules, unnecessary manual cleaning can be avoided, thereby saving resources and improving operation and maintenance efficiency.

[0070] It should be understood that the system not only relies on the data of a single light intensity sensor, but also comprehensively considers current attenuation and environmental factors, making cleaning decisions more scientific and reasonable. The cleaning recommendation report generated through intelligent analysis helps to reduce the long-term loss of photovoltaic modules and improve the overall power generation efficiency and operating benefits.

[0071] In addition, the dust accumulation monitoring system for photovoltaic modules provided by the present invention adopts a dust accumulation monitoring method for photovoltaic modules in the above embodiment, which can solve the technical problem of dust accumulation monitoring for photovoltaic modules. Compared with the prior art, the beneficial effects of the dust accumulation monitoring system for photovoltaic modules provided by the present invention are the same as the beneficial effects of the dust accumulation monitoring method for photovoltaic modules provided by the above embodiment, and the other technical features of the dust accumulation monitoring system for photovoltaic modules are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0072] The present invention provides a dust accumulation monitoring device for photovoltaic modules, please refer to Figure 2, a dust accumulation monitoring device for photovoltaic modules includes: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute a dust accumulation monitoring method for photovoltaic modules in the above-mentioned embodiment 1. A dust accumulation monitoring device for photovoltaic modules in the embodiment of the present invention may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. A dust accumulation monitoring device for photovoltaic modules is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention. A dust accumulation monitoring device for photovoltaic modules may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM) 1004. Various programs and data required for the operation of a dust accumulation monitoring device for photovoltaic modules are also stored in RAM 1004. The processing device 1001, ROM 1002, and RAM 1004 are connected to each other via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow a dust accumulation monitoring device for photovoltaic components to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a dust accumulation monitoring device for photovoltaic components with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0073] The present invention also provides a computer program product, including a computer program, which implements the steps of a dust accumulation monitoring method for photovoltaic modules as described above when executed by a processor. The computer program product provided by the present invention can solve a technical problem of dust accumulation monitoring for photovoltaic modules. Compared with the prior art, the beneficial effects of the computer program product provided by the present invention are the same as the beneficial effects of the dust accumulation monitoring method for photovoltaic modules provided in the above embodiment, which will not be described in detail here.

[0074] In particular, according to the embodiments disclosed in the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through a communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present invention are executed.

[0075] It should be understood that the various parts disclosed in the present invention can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0076] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for monitoring dust accumulation of photovoltaic modules, characterized in that: The dust accumulation monitoring method for photovoltaic modules comprises: Step S10: installing light intensity sensors at the four corners and the center of each photovoltaic area, wherein the four corner sensors are used to monitor the dust accumulation data at the edges of the area, and the center sensor is used to monitor the dust accumulation data at the center of the area; The light intensity sensor compares the standard light intensity P before dust accumulation. clean The light intensity P after dust accumulation measured The difference is used to evaluate the degree of dust accumulation on the surface of photovoltaic modules. The specific formula is: Among them, the value of dust accumulation degree Q is between 0 and 1, and the smaller the value, the more serious the dust accumulation; Step S20: Install a current sensor in each photovoltaic area to monitor the output current of the photovoltaic components in the area. The current sensor collects current data I in real time. current and with the preset standard current I clean Compare and calculate the current attenuation I loss : I loss =I current -I clean ; Step S30: Based on the current attenuation I loss , the dust accumulation estimate D based on current decay is calculated by the following formula current : Step S40: The dust accumulation values ​​in the light intensity sensors at the four corners are collected by the central sensor, and the comprehensive dust accumulation value of the area is calculated using the following formula: Among them, D avg is the comprehensive dust accumulation value, D center is the dust accumulation value of the center sensor, D i is the dust accumulation value of the i-th corner sensor, D current is the dust accumulation estimation value based on current decay, γ is the weight coefficient of current data; Step S50: When the comprehensive dust accumulation value D avg Exceeding the preset dust accumulation threshold D threshold When the dust accumulation warning information is generated, the system transmits the information to the back-end of the console for data analysis via wireless communication; Step S60: After receiving the dust accumulation warning information, the console backend prioritizes the processing of the comprehensive dust accumulation value D avg Exceeds the preset dust accumulation threshold and the current attenuation I loss For areas where the current is greater than the preset threshold, the cleaning time is determined by comprehensively analyzing the dust accumulation degree, current attenuation data, and meteorological conditions, and a cleaning recommendation report is generated.

2. A method for monitoring dust accumulation of photovoltaic modules according to claim 1, characterized in that: In step S10, the light intensity sensor is connected to the back end of the console via a wireless network.

3. A method for monitoring dust accumulation of photovoltaic modules according to claim 1, characterized in that: In step S10, the sampling frequency of the sensor supports optimization and adjustment according to real-time weather conditions.

4. A method for monitoring dust accumulation of photovoltaic modules according to claim 1, characterized in that: In step S20, the current sensor is connected to the back end of the console via a wired connection.

5. A method for monitoring dust accumulation of photovoltaic modules according to claim 1, characterized in that: In step S10, the model of the light sensor is TSL2561.

6. A method for monitoring dust accumulation of photovoltaic modules according to claim 1, characterized in that: In step S50, the generated warning information is pushed to the user terminal via email.

7. A method for monitoring dust accumulation of photovoltaic modules according to claim 1, characterized in that: In step S60, the cleaning recommendation report can be exported to PDF format and directly printed through a built-in associated printer.

8. A dust accumulation monitoring system for photovoltaic modules, characterized in that: The dust accumulation monitoring system for photovoltaic modules comprises: A light intensity sensor module is used to install light intensity sensors at the four corners and the center of each photovoltaic area. The light intensity sensor collects dust accumulation data on the surface of the photovoltaic module by detecting the reflection and scattering of light. The four corner sensors are used to monitor the dust accumulation data at the edge of the area, and the center sensor is used to monitor the dust accumulation data at the center of the area. The current sensor module is used to install a current sensor in each photovoltaic area to monitor the output current of the photovoltaic components in the area. The current sensor collects current data in real time. current and with the preset standard current I clean Compare and calculate the current attenuation I loss : I loss =I current -I clean ; The dust accumulation estimation module is used to estimate the dust accumulation based on the current decay I loss , the dust accumulation estimate D based on current decay is calculated by the following formula current : The data fusion module is used to collect dust accumulation values ​​from the light intensity sensors at the four corners through the central sensor, and calculate the comprehensive dust accumulation value of the area using the following formula: Among them, D avg is the comprehensive dust accumulation value, D center is the dust accumulation value of the center sensor, D i is the dust accumulation value of the i-th corner sensor, D current is the dust accumulation estimation value based on current decay, γ is the weight coefficient of current data; The early warning generation module is used to generate an early warning signal when the comprehensive dust accumulation value D avg Exceeding the preset dust accumulation threshold D threshold When the dust accumulation warning information is generated, the system transmits the information to the back-end of the console for data analysis via wireless communication; The cleaning suggestion module is used to prioritize the comprehensive dust accumulation value D after the console backend receives the dust accumulation warning information. avg Exceeds the preset dust accumulation threshold and the current attenuation I loss For areas where the current is greater than the preset threshold, the cleaning time is determined by comprehensively analyzing the dust accumulation degree, current attenuation data, and meteorological conditions, and a cleaning recommendation report is generated.

9. A dust accumulation monitoring device for photovoltaic modules, characterized in that: The dust accumulation monitoring device for photovoltaic modules comprises: A memory, a processor, and a dust accumulation monitoring program for photovoltaic components stored in the memory and executable on the processor, wherein the dust accumulation monitoring program for photovoltaic components, when executed by the processor, implements the dust accumulation monitoring method for photovoltaic components described in any one of Claims 1 to 7.

10. A computer program product, characterized in that The computer program product comprises a dust accumulation monitoring program for photovoltaic modules, and when the dust accumulation monitoring program for photovoltaic modules is executed by a processor, the dust accumulation monitoring method for photovoltaic modules described in any one of claims 1 to 7 is implemented.

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