Photovoltaic power generation system based on intelligent control

Abstract

The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation system based on intelligent control. The cutting machine is used for cutting plants; the cleaning machine is used for cleaning the front surface of the photovoltaic panel; the laser detector is used for judging the growth height condition of the plant on the back surface of the photovoltaic panel according to the laser receiving condition; the light transmittance detector is used for detecting the light transmittance of the photovoltaic panel and judging the soil covering condition of the front side of the photovoltaic panel according to the light transmittance; the power monitor is used for collecting the output power of the photovoltaic panel and judging the working state of the photovoltaic panel according to the output power; the alarm is used for sending out an alarm signal according to the working state; according to the system provided by the invention, by arranging the devices, when it is judged that the output power of the photovoltaic panel is abnormal, the external environment is checked in time, normal work of the photovoltaic panel is guaranteed, and the stability of the photovoltaic power generation system is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a photovoltaic power generation system based on intelligent control. Background Art

[0002] The solar photovoltaic panels used in photovoltaic power generation systems are often installed on wild hillsides. Due to the disordered growth of plants in the ground environment, the surface of the solar photovoltaic panels is blocked by plants or dust. Especially in an environment where the soil and rainfall are suitable for plant growth, the shading of plant leaves will affect the overall power generation efficiency of the solar photovoltaic panels, causing the photovoltaic panels to be idle for a longer time, affecting the service life of the solar photovoltaic panels. In actual production, chemical herbicides, animals, manual labor and machinery are usually used to clean plants. Regular weeding consumes a lot of manpower and material resources, and the use of chemical agents will pollute the environment.

[0003] Chinese Patent Authorization Announcement No.: CN115065319B discloses a solar photovoltaic panel plant removal system, which includes: an insulated water tank, a booster device and a heating body are arranged inside the insulated water tank, the booster device is connected to the hot spray assembly through a third water valve, and the heating body is electrically connected to a PLC controller; and a liquid level and temperature measurement integrated sensor electrically connected to the PLC controller and the booster device respectively. The liquid level and temperature measurement integrated sensor load collects the existing water volume and heat data of the water tank, and the PLC controller controls the spraying hot liquid volume through a preset scheme. The liquid level and temperature measurement integrated sensor detects the actual hot liquid spraying volume in real time and gives feedback, avoiding repeated and inefficient spraying of hot liquid on the ground, and reasonably reducing the local consumption of photovoltaic energy for weeding in the near area.

[0004] Chinese Patent Publication No.: CN118661535A discloses a photovoltaic area weeding device. The invention provides a photovoltaic area weeding device, which relates to the field of weeding technology. The device includes: a control component, a mounting component, a track component, a weeding component and a detection component; the mounting component is arranged on the peripheral side of the photovoltaic panel; the track component is arranged on the mounting component, the track component is arranged around the peripheral side of the photovoltaic panel, the weeding component is connected to the track component, and moves relative to the track component; the detection component includes a first detection component, the first detection component is used to detect the height of plants on the peripheral side of the photovoltaic panel, the first detection component and the weeding component are both electrically connected to the control component, and the control component is configured to control the weeding component to move along the track component when the height of plants on the peripheral side of the photovoltaic panel is greater than or equal to a preset value, so as to remove plants on the peripheral side of the photovoltaic panel. The weeding device is easy to adapt to photovoltaic plant areas of different terrains and is relatively convenient to use.

[0005] However, the above method has the following problems: it is impossible to perform weeding and dust removal periodically, and when it is detected that the power generation efficiency of the photovoltaic panel is reduced, the pollutants on the front and back of the photovoltaic panel cannot be cleaned in time, and the cleaning effect is not confirmed after the cleaning is completed. Summary of the invention

[0006] To this end, the present invention provides a photovoltaic power generation system based on intelligent control to overcome the problems in the prior art that periodic weeding and dust removal cannot be performed, and when it is detected that the power generation efficiency of the photovoltaic panel is reduced, the pollutants on the front and back of the photovoltaic panel cannot be cleaned in time, and the cleaning effect is not confirmed after the cleaning is completed.

[0007] To achieve the above object, the present invention provides a photovoltaic power generation system based on intelligent control, comprising: Several photovoltaic panels; A cutting machine, which is used to cut plants growing on the back of the photovoltaic panel that exceed a preset height; A cleaning machine, connected to the photovoltaic panel, for cleaning the front of the photovoltaic panel; A laser detector connected to the cutting machine, used to determine the growth height of the plant on the back of the photovoltaic panel according to the laser reception situation, and to drive the cutting machine according to the growth height situation; A light transmittance detector, which is connected to the photovoltaic panel and the cleaning machine respectively, for detecting the light transmittance of the photovoltaic panel and determining the soil covering condition of the front side of the photovoltaic panel according to the light transmittance, and driving the cleaning machine according to the soil covering condition; A power monitor, which is respectively connected to the photovoltaic panel, the cutting machine, the cleaning machine, the laser detector and the transmittance detector, and is used to determine the working state of the photovoltaic panel according to the collected output power of the photovoltaic panel, and to drive the laser detector and / or the transmittance detector according to the working state; an alarm device, connected to the power monitor, for issuing an alarm signal according to the working state; Among them, the alarm signal includes abnormal working information of the photovoltaic panel; the back of the photovoltaic panel is the side facing away from the sun; the front of the photovoltaic panel is the side facing the sun; the preset height is positively correlated with the height of the back of the photovoltaic panel and is lower than the height of the back of the photovoltaic panel.

[0008] Furthermore, the laser detector is provided with a plurality of laser transmitters and a plurality of laser receivers in pairs at the preset height, and the laser detector determines whether the growth height of the plant on the back of the photovoltaic panel exceeds the preset height based on the light loss ratio of each laser receiver within the first preset time. If the light loss ratio of the laser receiver within the first preset time is less than the preset ratio, it is determined that the growth height of the plant on the back of the photovoltaic panel does not exceed the preset height; If the light loss ratio of the laser receiver within the first preset time is not less than the preset ratio, it is determined that the growth height of the plant on the back of the photovoltaic panel exceeds the preset height; Among them, the first preset time is negatively correlated with the ambient temperature; the light loss ratio is the ratio of the time that the laser receiver does not receive the laser within the first preset time to the first preset time; the preset ratio is positively correlated with the distance between the corresponding laser transmitter and the laser receiver.

[0009] Furthermore, the transmittance detector is also used to determine the soil covering condition of the front side of the photovoltaic panel based on the comparison result of the detected transmittance of the photovoltaic panel and the preset transmittance, wherein: If the light transmittance of the photovoltaic panel is less than the preset light transmittance, it is determined that there is too much soil covering the front of the photovoltaic panel; If the light transmittance of the photovoltaic panel is not less than the preset light transmittance, it is determined that the soil covering the front side of the photovoltaic panel is normal; Wherein, the preset light transmittance is negatively correlated with the thickness of the photovoltaic panel.

[0010] Furthermore, the power monitor is also used to determine the working state of the photovoltaic panel based on the comparison result between the collected output power of the photovoltaic panel and the preset power, wherein: If the output power is less than the preset power, the power monitor determines that the working state of the photovoltaic panel is an abnormal state; If the output power is not less than the preset power, the power monitor determines that the working state of the photovoltaic panel is normal; Wherein, the working state includes a normal state and an abnormal state; and the preset power is positively correlated with the area of ​​the photovoltaic panel.

[0011] Furthermore, when the power monitor determines that the working state of the photovoltaic panel is the normal state, the laser detector detects the laser reception situation with the first preset time as a period.

[0012] Further, the transmittance detector detects the transmittance of the photovoltaic panel with a second preset time as a period when the power monitor determines that the working state of the photovoltaic panel is the normal state; Wherein, the second preset time is negatively correlated with the ambient wind speed.

[0013] Furthermore, the laser detector determines whether the growth height of the plant on the back of the photovoltaic panel exceeds the preset height when the power monitor determines that the working state of the photovoltaic panel is the abnormal state, wherein: If the growth height of the plant on the back of the photovoltaic panel is less than the preset height, the laser detector feeds back a first normal signal to the power monitor; If the growth height of the plant on the back of the photovoltaic panel is greater than or equal to the preset height, the laser detector drives the cutting machine to operate; The first normal signal includes information that the growth height of the plant does not cover the photovoltaic panel.

[0014] Furthermore, the transmittance detector determines the soil covering condition of the front side of the photovoltaic panel when the power monitor determines that the working state of the photovoltaic panel is the abnormal state, wherein: If the transmittance detector determines that the front of the photovoltaic panel is not covered with too much soil, the cleaning machine is driven to clean the front of the photovoltaic panel; If the transmittance detector determines that the soil covering condition of the front side of the photovoltaic panel is not normal, the transmittance detector feeds back a second normal signal to the power monitor; The second normal signal includes information that the soil covering the front side of the photovoltaic panel is normal.

[0015] Further, the power monitor determines the working state of the photovoltaic panel when receiving the first normal signal and the second normal signal, wherein: If it is determined that the working state of the photovoltaic panel is the abnormal state, the alarm device is driven to send out the alarm signal.

[0016] Furthermore, the power monitor records the time when the abnormal state is determined each time, and the time when the first normal signal and the second normal signal are received.

[0017] Compared with the prior art, the beneficial effect of the present invention lies in that the system of the present invention, by setting up a laser detector and a lawn mower, periodically determines whether the growth height of the plant reaches a preset limit height by the proportion of time that the laser receiving device is blocked within a period of time, and uses a cutter to clean up the extra-high plants, thereby achieving effective control of the plants and effectively improving the stability and practicality of the photovoltaic power generation system.

[0018] Furthermore, by setting up a transmittance detector and a cleaning machine, the transmittance of the photovoltaic panel is periodically tested. When the transmittance of the photovoltaic panel decreases, the front of the photovoltaic panel is cleaned in time, so that the photovoltaic panel can receive sunlight normally. While ensuring the normal operation of the photovoltaic panel, the stability and practicality of the photovoltaic power generation system are further improved.

[0019] Furthermore, the present invention provides a power monitor to monitor the output power of the photovoltaic panel and promptly determine the working status of the photovoltaic panel. When it is determined that the output power of the photovoltaic panel is abnormal, the laser detector and the light transmission detector are promptly driven to check the external environment, and when it is found that plants or dust are blocking the photovoltaic panel, they are cleaned in time. At the same time, after eliminating the interference from the external environment, an alarm signal is issued to indicate that the photovoltaic panel is working abnormally. While ensuring the normal operation of the photovoltaic panel, the stability and practicality of the photovoltaic power generation system are further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a photovoltaic power generation system based on intelligent control of the present invention; Figure 2 It is a determination diagram of soil covering condition in an embodiment of the present invention; Figure 3 This is a diagram for determining the working state of a photovoltaic panel according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the equipment locations of the photovoltaic power generation system based on intelligent control of the present invention. DETAILED DESCRIPTION

[0021] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0023] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] In addition, it should be noted that in the description of the present invention, 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1 As shown, it is a structural schematic diagram of a photovoltaic power generation system based on intelligent control of the present invention, a photovoltaic power generation system based on intelligent control, including: Several photovoltaic panels; A cutting machine, which is used to cut plants growing on the back of the photovoltaic panel that exceed a preset height; A cleaning machine, which is connected to the photovoltaic panel and is used to clean the front of the photovoltaic panel; A laser detector connected to the cutting machine is used to determine the growth height of the plant on the back of the photovoltaic panel according to the laser reception situation, and to drive the cutting machine according to the growth height situation; A light transmittance detector is connected to the photovoltaic panel and the cleaning machine respectively, and is used to detect the light transmittance of the photovoltaic panel and determine the soil covering condition of the front side of the photovoltaic panel according to the light transmittance, and drive the cleaning machine according to the soil covering condition; A power monitor, which is respectively connected to the photovoltaic panel, the cutting machine, the cleaning machine, the laser detector and the transmittance detector, and is used to determine the working state of the photovoltaic panel according to the collected output power of the photovoltaic panel, and to drive the laser detector and / or the transmittance detector according to the working state; An alarm device, which is connected to the power monitor and is used to send out an alarm signal according to the working status; Among them, the alarm signal includes abnormal working information of the photovoltaic panel; the back of the photovoltaic panel is the side facing away from the sun; the front of the photovoltaic panel is the side facing the sun; the preset height is positively correlated with the height of the back of the photovoltaic panel and is lower than the height of the back of the photovoltaic panel.

[0026] It will be appreciated that vegetation includes grasses and trees growing on the ground, such as weeds and shrubs.

[0027] It is understandable that the higher the height of the back of the photovoltaic panel, the taller the plants need to be to cover the front of the photovoltaic panel, so the preset height can be set higher but must be lower than the height of the back of the photovoltaic panel.

[0028] Optionally, the height of the back of the photovoltaic panel is 0.5 meters, and the preset height is 0.3 meters; The height of the back of the photovoltaic panel is 0.8 meters, and the preset height is 0.5 meters; The height of the back of the photovoltaic panel is 1 meter, and the preset height is 0.8 meters.

[0029] Specifically, the laser detector sets a plurality of laser transmitters and a plurality of laser receivers in pairs at a preset height. The laser detector determines whether the growth height of the plants on the back of the photovoltaic panel exceeds the preset height based on the light loss ratio of each laser receiver within the first preset time. If the light loss ratio of the laser receiver within the first preset time is less than the preset ratio, it is determined that the growth height of the plant on the back of the photovoltaic panel does not exceed the preset height; If the light loss ratio of the laser receiver within the first preset time is not less than the preset ratio, it is determined that the growth height of the plant on the back of the photovoltaic panel exceeds the preset height; Embodiment 1: In this embodiment, the preset height is 0.5 meters, the first preset time is 10 minutes, and the preset ratio is 50%. If the light loss ratio of the laser receiver within 10 minutes is 40%, which is less than the preset ratio of 50%, it is determined that the growth height of the plant on the back of the photovoltaic panel does not exceed the preset height of 0.5 meters; If the light loss ratio of the laser receiver within 10 minutes is 60% which is greater than the preset ratio of 50%, it is determined that the growth height of the plants on the back of the photovoltaic panel exceeds the preset height by 0.5 meters; Among them, the first preset time is negatively correlated with the ambient temperature; the light loss ratio is the ratio of the time when the laser receiver does not receive the laser within the first preset time to the first preset time; the preset ratio is positively correlated with the distance between the corresponding laser transmitter and laser receiver.

[0030] It can be understood that the higher the ambient temperature, the more conducive it is to plant growth, the faster the plant grows, and the shorter the detection time.

[0031] Optionally, the ambient temperature is 15 degrees and the first preset time is 30 minutes; The ambient temperature is 25 degrees, and the first preset time is 20 minutes; The ambient temperature is 35 degrees and the first preset time is 10 minutes.

[0032] It is understandable that the farther the distance between the corresponding laser transmitter and the laser receiver is, the more plants there are in between, and the longer the shielding time will be.

[0033] Optionally, the distance between the laser transmitter and the laser receiver is set to 1 meter, and the preset ratio is 50%; The corresponding distance between the laser transmitter and the laser receiver is set to 1.5 meters, and the preset ratio is 55%; The corresponding distance between the laser transmitter and the laser receiver is set to 2 meters, and the preset ratio is 60%.

[0034] Specifically, the system of the present invention sets up a laser detector and a lawn mower, and periodically determines whether the growth height of the plant reaches a preset limit height by measuring the proportion of time that the laser receiving device is blocked within a period of time. The cutter is used to clear the over-high plants, thereby achieving effective control of the plants and effectively improving the stability and practicality of the photovoltaic power generation system.

[0035] See also Figure 2 As shown, it is a diagram for determining the soil covering condition of an embodiment of the present invention. The transmittance detector is also used to determine the soil covering condition of the front side of the photovoltaic panel based on the comparison result of the detected transmittance of the photovoltaic panel and the preset transmittance, wherein: If the light transmittance of the photovoltaic panel is less than the preset light transmittance, it is determined that there is too much soil covering the front of the photovoltaic panel; If the light transmittance of the photovoltaic panel is not less than the preset light transmittance, it is determined that the soil covering the front of the photovoltaic panel is normal; Embodiment 2: Based on Embodiment 1, this embodiment is different from the embodiment 1 in that the preset light transmittance is 90%. If the light transmittance of the photovoltaic panel is 85%, which is less than the preset light transmittance of 90%, it is determined that there is too much soil covering the front of the photovoltaic panel. If the light transmittance of the photovoltaic panel is 92% and is greater than the preset light transmittance of 90%, it is determined that the soil covering the front of the photovoltaic panel is normal.

[0036] Among them, the preset transmittance is negatively correlated with the thickness of the photovoltaic panel.

[0037] It is understandable that the thicker the photovoltaic panel is, the less sunlight passes through it, and the preset transmittance is relatively reduced.

[0038] Optionally, the thickness of the photovoltaic panel is 3 mm, and the preset light transmittance is 90%; The thickness of the photovoltaic panel is 1.8 mm, and the preset light transmittance is 91%; The thickness of the photovoltaic panel is 1 mm and the preset light transmittance is 92%.

[0039] Specifically, by setting up a transmittance detector and a cleaning machine, the transmittance of the photovoltaic panels is periodically tested. When the transmittance of the photovoltaic panels drops, the front of the photovoltaic panels is cleaned in time so that the photovoltaic panels can receive sunlight normally. While ensuring the normal operation of the photovoltaic panels, the stability and practicality of the photovoltaic power generation system are further improved.

[0040] See also Figure 3 As shown, it is a determination diagram of the working state of the photovoltaic panel according to an embodiment of the present invention. The power monitor is also used to determine the working state of the photovoltaic panel based on the comparison result between the collected output power of the photovoltaic panel and the preset power, wherein: If the output power is less than the preset power, the power monitor determines that the working state of the photovoltaic panel is abnormal; If the output power is not less than the preset power, the power monitor determines that the working state of the photovoltaic panel is normal; Embodiment 3: Based on Embodiment 2, this embodiment is different from it in that the preset power is 300 watts. If the output power is 289 watts, which is less than the preset power of 300 watts, the power monitor determines that the working state of the photovoltaic panel is abnormal; If the output power is 305 watts, which is not less than the preset power of 300 watts, the power monitor determines that the working state of the photovoltaic panel is normal; Among them, the working state includes normal state and abnormal state; the preset power is positively correlated with the area of ​​the photovoltaic panel.

[0041] It is understandable that, under the same material conditions, the larger the area of ​​the photovoltaic panel, the more sunlight it receives and the greater the output power.

[0042] Optionally, the photovoltaic panel area is 1 square meter and the preset power is 150 watts; The photovoltaic panel area is 2 square meters, and the preset power is 320 watts; The photovoltaic panel area is 3 square meters and the preset power is 500 watts.

[0043] Specifically, when the power monitor determines that the working state of the photovoltaic panel is normal, the laser detector detects the laser reception situation with a first preset time as a period.

[0044] Specifically, the transmittance detector detects the transmittance of the photovoltaic panel with a second preset time as a period when the power monitor determines that the working state of the photovoltaic panel is normal; It can be understood that when the power monitor determines that the working state of the photovoltaic panel is normal, the laser detector and the transmittance detector periodically detect the corresponding parameters of the photovoltaic panel.

[0045] The second preset time is negatively correlated with the ambient wind speed.

[0046] It is understandable that the greater the ambient wind speed, the greater the dust that falls on the photovoltaic panels. In order to ensure accurate detection results and timely detect whether there are large obstructions blown above the photovoltaic panels, the detection cycle time should be shortened.

[0047] Optionally, the ambient wind speed is 1 meter per second, and the second preset time is 1 hour; The ambient wind speed is 5 meters per second, and the second preset time is 20 minutes; The ambient wind speed is 10 meters per second, and the second preset time is 10 minutes.

[0048] Specifically, when the power monitor determines that the working state of the photovoltaic panel is abnormal, the laser detector determines whether the growth height of the plant on the back of the photovoltaic panel exceeds the preset height, wherein: If the growth height of the plant on the back of the photovoltaic panel is less than the preset height, the laser detector feeds back a first normal signal to the power monitor; If the growth height of the plant on the back of the photovoltaic panel is greater than or equal to the preset height, the laser detector drives the cutting machine to operate; The first normal signal includes information that the growth height of the plant does not cover the photovoltaic panel.

[0049] Specifically, when the power monitor determines that the working state of the photovoltaic panel is abnormal, the transmittance detector determines the soil covering condition on the front of the photovoltaic panel, wherein: If the light transmittance detector determines that the front of the photovoltaic panel is not covered with too much soil, the cleaning machine is driven to clean the front of the photovoltaic panel; If the transmittance detector determines that the soil covering condition of the front side of the photovoltaic panel is not normal, the transmittance detector feeds back a second normal signal to the power monitor; The second normal signal includes information that the soil covering the front side of the photovoltaic panel is normal.

[0050] See also Figure 4 As shown, it is a schematic diagram of the equipment position of the photovoltaic power generation system based on intelligent control of the present invention. The power monitor determines the working state of the photovoltaic panel when receiving the first normal signal and the second normal signal, wherein: If the working state of the photovoltaic panel is determined to be an abnormal state, the alarm device is driven to send out an alarm signal.

[0051] Specifically, the present invention provides a power monitor to monitor the output power of the photovoltaic panel and promptly determine the working status of the photovoltaic panel. When it is determined that the output power of the photovoltaic panel is abnormal, the laser detector and the light transmission detector are promptly driven to check the external environment, and when it is found that plants or dust are blocking the photovoltaic panel, they are cleaned up in time. At the same time, after eliminating the interference from the external environment, an alarm signal is issued to indicate that the photovoltaic panel is working abnormally. While ensuring the normal operation of the photovoltaic panel, the stability and practicality of the photovoltaic power generation system are further improved.

[0052] Specifically, the power monitor records the time when the abnormal state is determined each time, and the time when the first normal signal and the second normal signal are received.

[0053] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic power generation system based on intelligent control, characterized in that: include: Several photovoltaic panels; A cutting machine, which is used to cut plants growing on the back of the photovoltaic panel that exceed a preset height; A cleaning machine, connected to the photovoltaic panel, for cleaning the front of the photovoltaic panel; A laser detector connected to the cutting machine, used to determine the growth height of the plant on the back of the photovoltaic panel according to the laser reception situation, and to drive the cutting machine according to the growth height situation; A light transmittance detector, which is connected to the photovoltaic panel and the cleaning machine respectively, for detecting the light transmittance of the photovoltaic panel and determining the soil covering condition of the front side of the photovoltaic panel according to the light transmittance, and driving the cleaning machine according to the soil covering condition; A power monitor, which is respectively connected to the photovoltaic panel, the cutting machine, the cleaning machine, the laser detector and the transmittance detector, and is used to determine the working state of the photovoltaic panel according to the collected output power of the photovoltaic panel, and to drive the laser detector and / or the transmittance detector according to the working state; an alarm device, connected to the power monitor, for issuing an alarm signal according to the working state; Among them, the alarm signal includes abnormal working information of the photovoltaic panel; the back of the photovoltaic panel is the side facing away from the sun; the front of the photovoltaic panel is the side facing the sun; the preset height is positively correlated with the height of the back of the photovoltaic panel and is lower than the height of the back of the photovoltaic panel.

2. The photovoltaic power generation system based on intelligent control according to claim 1 is characterized in that: The laser detector is provided with a plurality of laser transmitters and a plurality of laser receivers in pairs at the preset height, and the laser detector determines whether the growth height of the plant on the back of the photovoltaic panel exceeds the preset height based on the light loss ratio of each laser receiver within the first preset time. If the light loss ratio of the laser receiver within the first preset time is less than the preset ratio, it is determined that the growth height of the plant on the back of the photovoltaic panel does not exceed the preset height; If the light loss ratio of the laser receiver within the first preset time is not less than the preset ratio, it is determined that the growth height of the plant on the back of the photovoltaic panel exceeds the preset height; Among them, the first preset time is negatively correlated with the ambient temperature; the light loss ratio is the ratio of the time that the laser receiver does not receive the laser within the first preset time to the first preset time; the preset ratio is positively correlated with the distance between the corresponding laser transmitter and the laser receiver.

3. The photovoltaic power generation system based on intelligent control according to claim 2 is characterized in that: The transmittance detector is also used to determine the soil covering condition of the front side of the photovoltaic panel based on the comparison result of the detected transmittance of the photovoltaic panel and the preset transmittance, wherein: If the light transmittance of the photovoltaic panel is less than the preset light transmittance, it is determined that there is too much soil covering the front of the photovoltaic panel; If the light transmittance of the photovoltaic panel is not less than the preset light transmittance, it is determined that the soil covering the front side of the photovoltaic panel is normal; Wherein, the preset light transmittance is negatively correlated with the thickness of the photovoltaic panel.

4. The photovoltaic power generation system based on intelligent control according to claim 3 is characterized in that: The power monitor is also used to determine the working state of the photovoltaic panel based on the comparison result between the collected output power of the photovoltaic panel and the preset power, wherein: If the output power is less than the preset power, the power monitor determines that the working state of the photovoltaic panel is an abnormal state; If the output power is not less than the preset power, the power monitor determines that the working state of the photovoltaic panel is normal; Wherein, the working state includes a normal state and an abnormal state; and the preset power is positively correlated with the area of ​​the photovoltaic panel.

5. The photovoltaic power generation system based on intelligent control according to claim 4 is characterized in that: When the power monitor determines that the working state of the photovoltaic panel is the normal state, the laser detector detects the laser reception situation with the first preset time as a period.

6. The photovoltaic power generation system based on intelligent control according to claim 5 is characterized in that: The transmittance detector detects the transmittance of the photovoltaic panel with a second preset time as a period when the power monitor determines that the working state of the photovoltaic panel is the normal state; Wherein, the second preset time is negatively correlated with the ambient wind speed.

7. The photovoltaic power generation system based on intelligent control according to claim 6 is characterized in that: The laser detector determines whether the growth height of the plant on the back of the photovoltaic panel exceeds the preset height when the power monitor determines that the working state of the photovoltaic panel is the abnormal state, wherein: If the growth height of the plant on the back of the photovoltaic panel is less than the preset height, the laser detector feeds back a first normal signal to the power monitor; If the growth height of the plant on the back of the photovoltaic panel is greater than or equal to the preset height, the laser detector drives the cutting machine to operate; The first normal signal includes information that the growth height of the plant does not cover the photovoltaic panel.

8. The photovoltaic power generation system based on intelligent control according to claim 7, characterized in that: The transmittance detector determines the soil covering condition of the front side of the photovoltaic panel when the power monitor determines that the working state of the photovoltaic panel is the abnormal state, wherein: If the transmittance detector determines that the front of the photovoltaic panel is not covered with too much soil, the cleaning machine is driven to clean the front of the photovoltaic panel; If the transmittance detector determines that the soil covering condition of the front side of the photovoltaic panel is not normal, the transmittance detector feeds back a second normal signal to the power monitor; The second normal signal includes information that the soil covering the front side of the photovoltaic panel is normal.

9. The photovoltaic power generation system based on intelligent control according to claim 8, characterized in that: The power monitor determines the working state of the photovoltaic panel when receiving the first normal signal and the second normal signal, wherein: If it is determined that the working state of the photovoltaic panel is the abnormal state, the alarm device is driven to send out the alarm signal.

10. The photovoltaic power generation system based on intelligent control according to claim 9, characterized in that: The power monitor records the time when the abnormal state is determined each time, and the time when the first normal signal and the second normal signal are received.

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