A power supply system, a power supply method, and a controller

Abstract

The application discloses a power supply system, a power supply method and a controller; the power supply system comprises an illumination device; a first power supply output port of a photovoltaic string is connected with a power supply interface of the illumination device; an electric energy contact area comprises a plurality of power consumption devices and a power supply station; a second power supply output port of the photovoltaic string is connected with the power supply station through a cable; a power supply output port of the power supply station is connected with a power supply interface of the power consumption device through a cable; an electric energy detection device is used for detecting residual electric quantity of the illumination device and residual electric quantity of the electric energy contact area, and generating a residual electric quantity detection result; an illumination sensor is used for generating an illumination intensity detection result; a host computer is used for controlling the photovoltaic string to supply power to the illumination device through the first power supply output port and / or to supply power to the electric energy contact area through the second power supply output port according to the residual electric quantity detection result; and the host computer is used for controlling an on-off state of the illumination device according to the illumination intensity detection result. The application improves the flexibility and rationality of power supply of the power supply system, and avoids energy waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy, in particular to a power supply system, a power supply method and a controller. BACKGROUND

[0002] In greenhouse planting, the light equipment is one of the key factors to improve crop yield and quality. With the popularization of new energy, charging the light equipment by photovoltaic string to provide energy is an effective way to utilize solar energy. However, if the light equipment is used improperly, it may cause energy waste. At present, the planting personnel mainly judges whether the light equipment needs to be turned on according to the weather forecast and planting experience, and manually starts the light equipment to illuminate the crops, which has low automation. For example, when the weather forecast is overcast or rainy, the light equipment is turned on. However, the weather forecast is a general prediction for the whole day, and cannot accurately represent the actual weather and light conditions at different times. If the light equipment is turned on all day according to the weather forecast, it will cause energy waste and cannot flexibly control the on-off of the light equipment according to the actual weather and light conditions. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a power supply system, a power supply method and a controller, which can improve the flexibility of the power supply system, improve the rationality of power supply, avoid energy waste, and improve the utilization rate of energy.

[0004] In a first aspect, the present application provides a power supply system, comprising:

[0005] a light equipment for providing light conditions for crops;

[0006] a photovoltaic string for converting solar energy into electric energy, the photovoltaic string comprising a first power supply output port and a second power supply output port, the first power supply output port of the photovoltaic string being connected to a power supply interface of the light equipment to provide power support for the light equipment;

[0007] an electric energy contact area comprising a plurality of power-consuming devices and a power supply station, the second power supply output port of the photovoltaic string being connected to the power supply station through a cable, and a power supply output port of the power supply station being connected to a power supply interface of each power-consuming device through a cable to supply power to each power-consuming device through the power supply output port of the power supply station;

[0008] an electric energy detection device for detecting the remaining power of the light equipment and the remaining power of the plurality of power-consuming devices in the electric energy contact area, and generating a remaining power detection result;

[0009] a light sensor for acquiring the light intensity of the environment and generating a light intensity detection result;

[0010] The host computer is configured to acquire the remaining power detection result detected by the electric energy detection device, and control the photovoltaic string to supply power to the lighting device through the first power supply output port and / or supply power to the power supply station in the electric energy communication area through the second power supply output port, so as to supply power to each power consumption device through the power supply output port of the power supply station; and acquire the light intensity detection result detected by the light sensor, and control the on-off state of the lighting device according to the light intensity detection result.

[0011] According to some embodiments of the present application, the shading module is further configured to perform a corresponding shading action under the control of the shading instruction sent by the host computer, wherein the shading instruction is obtained according to the light intensity detection result acquired by the host computer.

[0012] According to some embodiments of the present application, the light reflection module is further configured to reflect sunlight to the crops.

[0013] In the second aspect, the embodiments of the present application provide a power supply method, which is applied to the above-mentioned common-band system in the first aspect, and the power supply method comprises the following steps:

[0014] acquiring the remaining power detection result detected by the electric energy detection device, and controlling the photovoltaic string to supply power to the lighting device through the first power supply output port and / or supply power to the power supply station in the electric energy communication area through the second power supply output port, so as to supply power to each power consumption device through the power supply output port of the power supply station;

[0015] acquiring the light intensity detection result detected by the light sensor, and controlling the on-off state of the lighting device according to the light intensity detection result.

[0016] According to some embodiments of the present application, the control of the photovoltaic string to supply power to the lighting device through the first power supply output port and / or supply power to the power supply station in the electric energy communication area through the second power supply output port according to the remaining power detection result, so as to supply power to each power consumption device through the power supply output port of the power supply station comprises the following steps:

[0017] when the remaining power detection result indicates that the remaining power of the lighting device is less than a first power threshold and the remaining power of the power supply station in the electric energy communication area is greater than a second power threshold, controlling the photovoltaic string to supply power to the lighting device through the first power supply output port for a first time length;

[0018] when the remaining power detection result indicates that the remaining power of the lighting device is greater than the second power threshold and the remaining power of the power supply station of the power contact area is less than the first power threshold, controlling the photovoltaic string to supply power to the power supply station of the power contact area through the second power output port for a second time length, so as to supply power to each power consumption device through the power output port of the power supply station;

[0019] when the remaining power detection result indicates that the remaining power of the lighting device is greater than the first power threshold and less than the second power threshold, querying a third time length matching the remaining power of the lighting device in a first preset power table, and controlling the photovoltaic string to supply power to the lighting device through the first power output port for the third time length; and when the remaining power detection result indicates that the remaining power of the power supply station of the power contact area is greater than the first power threshold and less than the second power threshold, querying a fourth time length matching the remaining power of the power supply station in a second preset power table, and controlling the photovoltaic string to supply power to the power supply station through the second power output port for the fourth time length.

[0020] After the control of the photovoltaic string to supply power to the power supply station through the second power output port for the fourth time length, the method further comprises:

[0021] determining the power supply distance between each power consumption device and the power supply station of the power contact area;

[0022] screening the power consumption device satisfying the power supply distance less than the preset distance as the power consumption device to be charged;

[0023] obtaining the remaining power of the power consumption device to be charged;

[0024] querying a power supply time length matching the remaining power of the power consumption device to be charged in a third preset power table;

[0025] controlling the power output port of the power supply station to provide power support of the matching power supply time length to each power consumption device to be charged through the cable, so as to supply power to each power consumption device through the power output port of the power supply station.

[0026] According to some embodiments of the present application, the remaining power of the lighting device in a first time period is obtained, and when the remaining power of the lighting device in the first time period is less than a third power threshold, the photovoltaic string is controlled to supply power to the lighting device only through the first power output port, and the first time period is the peak power consumption period of the lighting device;

[0027] acquire a residual power of the power supply station in a second time period, and when the residual power of the power supply station in the second time period is less than a fourth power threshold, control the photovoltaic module to supply power to the power supply station through the second power supply output port only, the second time period being a power consumption peak period of the power consumption device in the power connection area.

[0028] According to some embodiments of the present application, the method further comprises:

[0029] when the light intensity detection result is that the current light intensity is less than a first preset light intensity, controlling the light device to be in an open state;

[0030] when the light intensity detection result is that the current light intensity is greater than the first preset light intensity, controlling the light device to be in a closed state.

[0031] According to some embodiments of the present application, the power supply system further comprises a light shielding module, the light shielding module comprising a first preset number of layers of light shielding curtains, and the method further comprises:

[0032] when the light intensity detection result is that the current light intensity is greater than a second preset light intensity, determining a light intensity level to which the current light intensity belongs;

[0033] determining, according to the light intensity level, a second preset number of layers of light shielding curtains required by the light shielding module when performing a light shielding action, wherein the second preset number is less than or equal to the first preset number.

[0034] In a third aspect, the embodiments of the present application further provide a controller comprising a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to perform the method in the technical solution of the second aspect.

[0035] The power supply system, the power supply method and the controller provided by the embodiments of the present application have at least one of the following advantages or beneficial effects: the power supply system comprises an electric energy detection device, the electric energy detection device is connected with the lighting device and the electric energy contact area, the electric energy detection device can detect the residual electric quantity of the lighting device and the residual electric quantity of the power supply station and other electric devices in the electric energy contact area in real time, and generate a residual electric quantity detection result, and then upload the residual electric quantity detection result to the upper computer, and the upper computer controls the photovoltaic string to supply power to the lighting device through the first power supply output port and / or supply power to the power supply station in the electric energy contact area through the second power supply output port, so as to supply power to each electric device through the power supply output port of the power supply station, realize power supply, reasonably provide power support according to the actual residual electric quantity of the current lighting device, the power supply station in the electric energy contact area and other electric devices, improve the flexibility of power supply of the power supply system, improve the rationality of power supply, and improve the utilization rate of electric energy of the photovoltaic string. The illumination sensor detects the illumination intensity of the current environment in real time, and uploads the illumination intensity detection result to the upper computer, and the upper computer analyzes the illumination intensity detection result, controls the lighting device to be in an open state when the illumination intensity is less than a first preset illumination intensity, and controls the lighting device to be in a closed state when the illumination intensity is greater than the first preset illumination intensity. The upper computer controls the on-off state of the lighting device according to the illumination intensity detection result, avoids completely relying on weather forecast and planting experience to determine whether the lighting device needs to be turned on, improves the accuracy of illumination intensity analysis and the intelligent degree of control of the on-off state of the lighting device, and only turns on the lighting device when the illumination intensity is less than the preset illumination intensity threshold, thereby avoiding energy waste.

[0036] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and achieved by the structure particularly pointed out in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic diagram of a power supply system provided by an embodiment of the present application;

[0038] Figure 2 is a structural schematic diagram of another power supply system provided by an embodiment of the present application;

[0039] Figure 3 is a flowchart of a power supply method provided by an embodiment of the present application;

[0040] Figure 4is a flow chart of a method for controlling a photovoltaic array to supply power to a lighting device via a first power supply output port and / or to supply power to a power supply station of an energy contact area via a second power supply output port according to a remaining power detection result, so as to supply power to each power consumption device via a power supply output port of the power supply station;

[0041] Figure 5 is a flow chart of a power supply method according to another embodiment of the present application;

[0042] Figure 6 is a flow chart of a method for controlling a lighting device according to a lighting intensity detection result;

[0043] Figure 7 is a flow chart of a power supply method according to another embodiment of the present application;

[0044] Figure 8 is a structural schematic diagram of a controller according to an embodiment of the present application. DETAILED DESCRIPTION

[0045] This part will describe the specific embodiments of the present application in detail, and the preferred embodiments of the present application are shown in the accompanying drawings, which serve to supplement the description in the text part and enable people to intuitively and visually understand each technical feature and the overall technical scheme of the present application, but cannot be understood as a limitation on the protection scope of the present application.

[0046] In the description of the present application, one or more is meant to be one or more, more than two is meant to be two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number, "any one" means one or more, "at least one of the following" and the like means any combination of these items, including any combination of single or multiple items. If the first, second, etc. are described, they are only used to distinguish technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0047] It should be noted that the terms such as setting, installing and connecting in the embodiments of the present application should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of the present application in combination with the specific content of the technical scheme. For example, the term "connection" can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium.

[0048] It should be noted that the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0049] In greenhouse planting, the lighting device is one of the key factors to improve crop yield and quality. With the popularization of new energy, charging the lighting device by photovoltaic string to provide energy is an effective way to utilize solar energy. However, if the lighting device is used improperly, it may cause energy waste. At present, the planting personnel mainly judges whether the lighting device needs to be turned on according to the weather forecast and planting experience, and manually starts the lighting device to light the crops, which has low automation. For example, when the weather forecast is overcast or rainy, the lighting device is turned on. However, the weather forecast is a general prediction for the whole day, and cannot accurately represent the actual weather and lighting conditions at different times. If the lighting device is turned on all day according to the weather forecast, it will cause energy waste, and cannot flexibly control the on-off of the lighting device according to the actual weather and lighting conditions.

[0050] Based on this, the embodiment of the present application provides a power supply system, a power supply method and a controller, which can improve the flexibility of the power supply system, improve the rationality of power supply, avoid energy waste, and improve the utilization rate of energy.

[0051] The power supply system, the power supply method and the controller provided by the embodiment of the present application will be further described below with reference to the accompanying drawings.

[0052] Referring to Figure 1 , as shown in the drawings, Figure 1A structure schematic diagram of a power supply system provided by an embodiment of the present application, the power supply system comprising an illumination device, a photovoltaic string, an electric energy liaison area, an electric energy detection device, an illumination sensor and an upper computer; the illumination device is used to provide light conditions for crops; the photovoltaic string is used to convert solar energy into electric energy, the photovoltaic string comprising a first power supply output port and a second power supply output port, the first power supply output port of the photovoltaic string being connected to a power supply interface of the illumination device to provide power support for the illumination device; the electric energy liaison area comprising a plurality of electric energy consuming devices and a power supply station, the second power supply output port of the photovoltaic string being connected to the power supply station through a cable, and power supply output ports of the power supply station being respectively connected to power supply interfaces of the electric energy consuming devices through cables to supply power to the electric energy consuming devices through the power supply output ports of the power supply station; the electric energy detection device is used to detect residual electric quantity of the illumination device and residual electric quantity of the electric energy consuming devices in the electric energy liaison area, and generate a residual electric quantity detection result; the illumination sensor is used to obtain illumination intensity of an environment and generate an illumination intensity detection result; the upper computer is used to obtain the residual electric quantity detection result detected by the electric energy detection device, and control the photovoltaic string to supply power to the illumination device through the first power supply output port and / or supply power to the power supply station of the electric energy liaison area through the second power supply output port to supply power to the electric energy consuming devices through the power supply output ports of the power supply station according to the residual electric quantity detection result; and is further used to obtain the illumination intensity detection result detected by the illumination sensor, and control a switching state of the illumination device according to the illumination intensity detection result.

[0053] The power supply system includes an electric energy detection device, which is connected to the lighting equipment and the power connection area. The electric energy detection device can detect the remaining power of the lighting equipment and the remaining power of the power supply station and other power-consuming equipment in the power connection area in real time, and generate a remaining power detection result. The remaining power detection result is then uploaded to the host computer. The host computer controls the photovoltaic string to supply power to the lighting equipment through the first power supply output port and / or to supply power to the power supply station in the power connection area through the second power supply output port according to the remaining power detection result, so as to supply power to each power-consuming equipment through the power supply output port of the power supply station to realize power supply. It can reasonably provide power support according to the actual remaining power of the current lighting equipment, the power supply station and other power-consuming equipment in the power connection area, thereby improving the flexibility of the power supply system, improving the rationality of power supply, and at the same time improving the utilization rate of the electric energy of the photovoltaic string. The light sensor detects the current ambient light intensity in real time and uploads the results to the host computer, which analyzes the results. When the light intensity is less than a first preset light intensity, the lighting device is controlled to be in the on state; when the light intensity is greater than the first preset light intensity, the lighting device is controlled to be in the off state. By controlling the on and off state of the lighting device based on the light intensity detection results, the host computer avoids relying entirely on weather forecasts and planting experience to determine whether the lighting device needs to be turned on. This improves the accuracy of light intensity analysis and the intelligence level of controlling the lighting device's on and off. At the same time, the lighting device is only turned on when the light intensity is less than the preset light intensity threshold, avoiding energy waste.

[0054] Reference Figure 2 As shown, Figure 2 This is a structural diagram of another power supply system provided in an embodiment of the present application. The power supply system also includes a shading module, which is used to be controlled by a shading instruction sent by a host computer to perform corresponding shading actions, wherein the shading instruction is obtained based on the light intensity detection result obtained by the host computer.

[0055] The power supply system includes a light sensor, which is used to detect the ambient light intensity and generate a light intensity detection result. The power supply system also includes a shading module. The power supply system is used in crop greenhouses. When the sunlight intensity in the greenhouse is too strong, it is not conducive to crop growth and can easily damage the crops. Therefore, by providing a shading module, the host computer can send a shading instruction to the shading module when the light sensor detects that the light intensity is greater than a first preset light intensity. The shading module executes the shading action according to the shading instruction, thereby reducing the light intensity in the greenhouse.

[0056] In the embodiments of the present application, the shading module includes a first preset number of layers of shading curtains, and the shading module is used to perform a corresponding shading action under the control of a shading instruction sent by the host computer, wherein the shading instruction is obtained according to a light intensity detection result obtained by the host computer. In one embodiment, when the light intensity detection result indicates that the light intensity is moderate strong light, the shading instruction sent by the host computer is to control the shading module to perform a shading action with one layer of shading curtains, and when the light intensity detection result indicates that the light intensity is high strong light, the shading instruction sent by the host computer is to control the shading module to perform a shading action with two layers of shading curtains.

[0057] The shading instruction is obtained according to a light intensity detection result obtained by the host computer, and the shading module performs a corresponding shading action under the control of a shading instruction sent by the host computer, which can automatically adjust the number of shading curtains and the angle of the shading curtains or the overall lifting action of the shading curtains, complete the intelligent control function of the shading curtains, and the technical implementation of the shading module can be based on the technology of the LONWORKS control network to realize the intelligent control of the turning angle of the shading curtains in different directions. The shading module can automatically adjust the shading measures according to the changes of the surrounding natural conditions, such as seasons, dates, different time periods, and the sun's elevation and azimuth in different directions, so as to block the radiant heat, reduce the direct sunlight, avoid the generation of glare, fully utilize the natural light, and save energy. In this way, the shading module helps to optimize the light conditions in the greenhouse, improves the growth efficiency of crops, reduces energy waste, and may reduce the risk of crop damage caused by strong direct sunlight.

[0058] In another embodiment of the present application, the power supply system further includes a light reflection module, and the light reflection module is used to reflect sunlight to crops.

[0059] The power supply system further includes a light reflection module, and the power supply system is applied to a crop planting greenhouse. The light reflection module can reflect sunlight to crops, and by reflecting more light to crops, the light reflection module helps to improve the photosynthesis efficiency of crops, thereby improving the light efficiency of crops, promoting the growth of crops, and improving the yield of crops.

[0060] It can be understood that different types of crops have different light requirements. For example, heliophytes need more direct light, while skotophytes prefer scattered light. The light reflection module can be adjusted according to the requirements of crops, and the light reflection module can provide suitable light conditions by providing uniform light, which helps to improve the appearance and nutritional value of crops. By reflecting sunlight using the light reflection module, the need for artificial lighting can be reduced, thereby saving energy and reducing costs.

[0061] The role of the light reflection module in greenhouse planting is multifaceted. It not only improves the light efficiency of crops and promotes crop growth, but also optimizes light conditions and improves crop quality. By using the light reflection module reasonably, the use of lighting equipment can be reduced, thereby reducing the electricity consumption of lighting equipment, achieving energy saving and environmental protection, and bringing many benefits to greenhouse planting.

[0062] Referring to Figure 3 , as shown in the accompanying drawings, Figure 3 is a flowchart of a power supply method provided by an embodiment of the present application. The power supply method includes but is not limited to steps S100 to S200, specifically,

[0063] Step S100: Obtain the remaining power detection result detected by the power detection device, and control the photovoltaic string to supply power to the lighting equipment through the first power supply output port and / or supply power to the power supply station in the power contact area through the second power supply output port, so as to supply power to each power consumption equipment through the power supply output port of the power supply station according to the remaining power detection result;

[0064] Step S200: Obtain the light intensity detection result detected by the light sensor, and control the on-off state of the lighting equipment according to the light intensity detection result.

[0065] In some embodiments of the present application, the power supply method is applied to a power supply system, which includes: a lighting equipment for providing light conditions for crops; a photovoltaic string for converting solar energy into electric energy, the photovoltaic string including a first power supply output port and a second power supply output port, the first power supply output port of the photovoltaic string being connected to the power supply interface of the lighting equipment to provide power support for the lighting equipment; a power contact area including a plurality of power consumption equipment and a power supply station, the second power supply output port of the photovoltaic string being connected to the power supply station through a cable, and the power supply output port of the power supply station being connected to the power supply interface of each power consumption equipment through a cable to supply power to each power consumption equipment through the power supply output port of the power supply station; a power detection device for detecting the remaining power of the lighting equipment and the remaining power of the plurality of power consumption equipment in the power contact area, and generating a remaining power detection result; a light sensor for obtaining the light intensity of the environment and generating a light intensity detection result; and a host computer.

[0066] The power supply method comprises the following steps: acquiring a residual power detection result detected by a power detection device, the residual power detection result comprising a residual power of a lighting device and residual powers of power supply stations in a power contact area and other power consumption devices; and controlling the photovoltaic string to supply power to the lighting device through a first power supply output port and / or supply power to the power supply stations in the power contact area through a second power supply output port according to the residual power detection result, so as to supply power to each power consumption device through a power supply output port of the power supply station, realize power supply, and reasonably provide power support according to the actual residual powers of the current lighting device, the power supply stations in the power contact area and the other power consumption devices, improve the flexibility of the power supply system, improve the rationality of power supply, and improve the utilization rate of the power of the photovoltaic string. The light intensity detection result detected by the light sensor is acquired, the light intensity detection result is analyzed, and the on-off state of the lighting device is controlled according to the light intensity detection result, so as to avoid completely relying on weather forecasts and planting experience to determine whether the lighting device needs to be turned on, improve the accuracy of light intensity analysis and the intelligent degree of controlling the on-off state of the lighting device, and only turn on the lighting device when the light intensity is less than a preset light intensity threshold, so as to avoid energy waste.

[0067] Referring to Figure 4 as shown in the drawings, Figure 4 is a flowchart of a method for controlling a photovoltaic string to supply power to a lighting device through a first power supply output port and / or supply power to a power supply station in a power contact area through a second power supply output port according to a residual power detection result, so as to supply power to each power consumption device through a power supply output port of the power supply station, provided by the embodiments of the present application, comprising but not limited to steps S110 to S140, specifically,

[0068] Step S110: acquiring a residual power detection result detected by a power detection device;

[0069] Step S120: when the residual power detection result indicates that the residual power of the lighting device is less than a first power threshold and the residual power of the power supply station in the power contact area is greater than a second power threshold, controlling the photovoltaic string to supply power to the lighting device through the first power supply output port for a first time length;

[0070] Step S130: when the residual power detection result indicates that the residual power of the lighting device is greater than the second power threshold and the residual power of the power supply station in the power contact area is less than the first power threshold, controlling the photovoltaic string to supply power to the power supply station in the power contact area through the second power supply output port for a second time length, so as to supply power to each power consumption device through a power supply output port of the power supply station;

[0071] Step S140: When the remaining power detection result indicates that the remaining power of the lighting device is greater than the first power threshold and less than the second power threshold, querying a third time length matching the remaining power of the lighting device in the first preset power supply table, and controlling the photovoltaic string to supply power to the lighting device through the first power supply output port for the third time length; and when the remaining power detection result indicates that the remaining power of the power supply station in the power connection area is greater than the first power threshold and less than the second power threshold, querying a fourth time length matching the remaining power of the power supply station in the second preset power supply table, and controlling the photovoltaic string to supply power to the power supply station through the second power supply output port for the fourth time length.

[0072] In some embodiments of the present application, the remaining power detection result detected by the power detection device is obtained, the remaining power detection result including the remaining power of the lighting device and the remaining power of the power supply station and other power consumption devices in the power connection area, and the power supply object and the power supply time of the photovoltaic string are controlled according to the remaining power detection result.

[0073] In one embodiment, when the remaining power detection result indicates that the remaining power of the lighting device is less than the first power threshold and the remaining power of the power supply station in the power connection area is greater than the second power threshold, it indicates that the remaining power of the lighting device is insufficient at this time and is in a low power state, and needs to be charged in time, and the remaining power of the power supply station in the power connection area is sufficient and is in a power supply state, and does not need to be charged temporarily; at this time, the photovoltaic string is controlled to supply power to the lighting device through the first power supply output port for a first time length, and by controlling the photovoltaic string to supply power to the lighting device through only the first power supply output port, the power supply efficiency of the photovoltaic string for supplying power to the lighting device can be improved, the rationality of power supply is improved, and energy waste is avoided at the same time.

[0074] It should be noted that in some embodiments of the present application, the first power threshold is 1kw, and a person skilled in the art sets the size of the first power threshold according to the model of the lighting device and the number of power consumption devices in the power connection area, and the size of the first power threshold is not limited in the embodiments of the present application.

[0075] It should be noted that in some embodiments of the present application, the second power threshold is 10kw, and a person skilled in the art sets the size of the second power threshold according to the model of the lighting device and the number of power consumption devices in the power connection area, and the size of the second power threshold is not limited in the embodiments of the present application.

[0076] It should be noted that in some embodiments of the present application, the first time length is one hour, and a person skilled in the art sets the size of the first time length according to the model of the lighting device and the area of the planting greenhouse, and the size of the first time length is not limited in the embodiments of the present application.

[0077] In another embodiment, when the remaining power detection result indicates that the remaining power of the lighting device is greater than the second power threshold, and the remaining power of the power supply station of the power connection area is less than the first power threshold, it indicates that the remaining power of the lighting device is sufficient at this time, in a power supply state, and does not need to be charged at this time, and the remaining power of the power supply station of the power connection area is insufficient, in a low power state, and needs to be charged in time; at this time, the photovoltaic string is controlled to supply power to the power supply station of the power connection area through the second power output port for a second time length, so as to supply power to each power device through the power output port of the power supply station, which can improve the power supply efficiency of the photovoltaic string for the power connection area, improve the rationality of power supply, and avoid energy waste.

[0078] It should be noted that in some embodiments of the present application, the second time length is three hours, and those skilled in the art can set the size of the second time length according to the number of power devices in the power connection area, and the size of the second time length is not limited in the embodiments of the present application.

[0079] In another embodiment, when the remaining power detection result indicates that the remaining power of the lighting device is greater than the first power threshold and less than the second power threshold, the third time length matching the remaining power of the lighting device is queried in the first preset power supply table, and the photovoltaic string is controlled to supply power to the lighting device through the first power output port for the third time length; and when the remaining power detection result indicates that the remaining power of the power supply station of the power connection area is greater than the first power threshold and less than the second power threshold, the fourth time length matching the remaining power of the power supply station is queried in the second preset power supply table, and the photovoltaic string is controlled to supply power to the power supply station through the second power output port for the fourth time length.

[0080] It can be understood that the first preset power supply table stores the required charging time corresponding to the remaining power of the lighting device one by one, and when the remaining power detection result indicates that the remaining power of the lighting device is greater than the first power threshold and less than the second power threshold, the third time length corresponding to the current remaining power of the lighting device is determined from the first preset power supply table, and the photovoltaic string is controlled to supply power to the lighting device through the first power output port for the third time length. The second preset power supply table stores the required charging time corresponding to the remaining power of the power supply station one by one, and when the remaining power detection result indicates that the remaining power of the power supply station of the power connection area is greater than the first power threshold and less than the second power threshold, the fourth time length corresponding to the current remaining power of the power supply station of the power connection area is determined from the second preset power supply table, and the photovoltaic string is controlled to supply power to the power supply station through the second power output port for the fourth time length.

[0081] According to the size of the remaining power of the lighting device and the remaining power of the power supply station in the power contact area in the remaining power detection result, the third time length corresponding to the current remaining power of the lighting device is determined in the first preset power supply table, the fourth time length corresponding to the current remaining power of the power supply station in the power contact area is determined in the second preset power supply table, and the photovoltaic group string is controlled to supply power to the lighting device through the first power output port for the third time length, and the photovoltaic group string is controlled to supply power to the power supply station through the second power output port for the fourth time length. According to the remaining power detection result, the power supply scheme of the photovoltaic group string is flexibly controlled, the flexibility of the power supply system is improved, the rationality of power supply is improved, energy waste is avoided, and the utilization rate of energy is improved.

[0082] It should be noted that the first preset power supply table stores the required charging time corresponding to the remaining power of the lighting device in the query memory, for example, the third time length required for charging when the remaining power of the lighting device is 2kw is 50 minutes, the third time length required for charging when the remaining power of the lighting device is 3kw is 45 minutes, and the third time length required for charging when the remaining power of the lighting device is 4kw is 30 minutes. The second preset power supply table stores the required charging time corresponding to the remaining power of the power supply station in the query memory, for example, the fourth time length required for charging when the remaining power of the power supply station is 2kw is 150 minutes, the fourth time length required for charging when the remaining power of the power supply station is 3kw is 120 minutes, the fourth time length required for charging when the remaining power of the power supply station is 3kw is 100 minutes, and the fourth time length required for charging when the remaining power of the power supply station is 6kw is 50 minutes. The size of the third time length and the fourth time length is not limited in the embodiment of the application.

[0083] Referring to Figure 5 , Figure 5 is a flowchart of the power supply method provided by another embodiment of the application. The power supply method includes but is not limited to steps S150 to S154, specifically,

[0084] Step S150: determining the power supply distance between each power consumption device and the power supply station in the power contact area;

[0085] Step S151: screening the power consumption device satisfying the power supply distance less than the preset distance as the power consumption device to be charged;

[0086] Step S152: obtaining the remaining power of the power consumption device to be charged;

[0087] Step S153: querying the power supply time length matching the remaining power of the power consumption device to be charged in the third preset power supply table;

[0088] Step S154: The power supply output port of the power supply station provides power support with matched power supply duration to each of the to-be-charged power consuming devices through the cable, so as to realize power supply to each of the power consuming devices through the power supply output port of the power supply station.

[0089] In some embodiments of the present application, the power supply method further comprises: determining the power supply distance between each of the power consuming devices and the power supply station in the power contact area, so as to screen out the power consuming devices meeting the power supply requirements of the power supply station. The power supply distance is an important index for measuring the power supply capacity of the traction power supply system, and has a practical impact on the stability and economic operation of the power supply system. In the smart grid, the traction network of the cable structure can be used to stably and large-capacity transmit electric energy. It should be noted that, according to the research in “Analysis of Limit Power Supply Distance of Urban Rail Transit AC Power Supply System”, the maximum single power supply length of the urban rail transit AC power supply system can reach 9.31 kilometers, and when the main transformer power supply station is located in the middle of the line, the limit power supply distance can reach 84.22 kilometers. The skilled person in the art can set a preset distance according to these data, and screen out the power consuming devices meeting the condition of the power supply distance being less than the preset distance as the to-be-charged power consuming devices. After determining the to-be-charged power consuming devices meeting the power supply distance, the residual power of each of the to-be-charged power consuming devices is obtained, the links of the power supply system are monitored in real time, including power generation, transmission and distribution, so as to improve the reliability and safety of power supply; the power supply duration matching the residual power of each of the to-be-charged power consuming devices is queried in the third preset power supply table. It can be understood that the third preset power supply table stores the required charging duration corresponding to the residual power of the to-be-charged power consuming devices one by one, and the power supply output port of the power supply station provides power support with matched power supply duration to each of the to-be-charged power consuming devices through the cable, so as to realize power supply to each of the power consuming devices through the power supply output port of the power supply station.

[0090] Before the power supply station provides power support with matched power supply duration to each of the to-be-charged power consuming devices through the cable, the power supply distance between each of the power consuming devices and the power supply station in the power contact area is first determined, and the power consuming devices meeting the condition of the power supply distance being less than the preset distance are screened out as the to-be-charged power consuming devices, so as to ensure the reliability and safety of power transmission. Then, the power supply duration matching the residual power of the to-be-charged power consuming devices is queried in the third preset power supply table, and the power supply output port of the power supply station provides power support with matched power supply duration to each of the to-be-charged power consuming devices through the cable, so as to realize power supply to each of the power consuming devices through the power supply output port of the power supply station, improve the flexibility of the power supply system, improve the rationality of power supply, and at the same time avoid energy waste and improve the utilization rate of energy.

[0091] In another embodiment of the present application, the power supply method further comprises but is not limited to steps S300 to S310, specifically,

[0092] Step S300: acquiring the remaining power of the lighting device in a first time period, when the remaining power of the lighting device in the first time period is less than a third power threshold, controlling the photovoltaic string to supply power to the lighting device through only the first power supply output port, the first time period being a power consumption peak period of the lighting device;

[0093] Step S310: acquiring the remaining power of the power supply station in a second time period, when the remaining power of the power supply station in the second time period is less than a fourth power threshold, controlling the photovoltaic string to supply power to the power supply station through only the second power supply output port, the second time period being a power consumption peak period of the power consumption device in the power connection area.

[0094] In some embodiments of the present application, the power supply method further comprises: in the power consumption peak period of the lighting device, acquiring the remaining power of the lighting device, when the remaining power of the lighting device is less than a third power threshold, indicating that the remaining power of the lighting device is insufficient and in a low power state, and needs to be charged in time; at this time, the photovoltaic string is controlled to supply power to the lighting device through only the first power supply output port. By monitoring the remaining power of the lighting device in the power consumption peak period of the lighting device, when the remaining power of the lighting device is insufficient, the lighting device can be supplied with power in time to ensure that the lighting device can be normally used in the power consumption peak period of the lighting device, and the reliability of the power supply method of the power system is improved.

[0095] In the power consumption peak period of the power consumption device in the power connection area, the remaining power of the power supply station is acquired, when the remaining power of the power supply station is less than a fourth power threshold, indicating that the remaining power of the power supply station is insufficient and in a low power state, and needs to be charged in time; at this time, the photovoltaic string is controlled to supply power to the power supply station through only the second power supply output port. By monitoring the remaining power of the power supply station in the power consumption peak period of the power consumption device in the power connection area, when the remaining power of the power supply station is insufficient, the power supply station can be supplied with power in time to ensure that the power supply station can supply power to each power consumption device through the power supply output port of the power supply station in the power consumption peak period of the power consumption device in the power connection area, ensure the normal use of power supply of each power consumption device, improve the experience of power use, and improve the reliability of the power supply method of the power system.

[0096] Referring to Figure 6 Figure 6 is a flowchart of a method for controlling the on-off state of a lighting device according to a light intensity detection result provided by an embodiment of the present application, the method for controlling the on-off state of the lighting device according to the light intensity detection result comprises but is not limited to steps S210 to S230, specifically,

[0097] Step S210: acquiring a light intensity detection result detected by a light sensor;

[0098] ​Step S220: When the light intensity detection result shows that the current light intensity is less than the first preset light intensity, the lighting device is controlled to be in an on state;

[0099] Step S230: When the light intensity detection result shows that the current light intensity is greater than the first preset light intensity, the lighting device is controlled to be in an off state.

[0100] In some embodiments of the present application, the power supply system includes a light sensor, which is used to detect the light intensity of the current environment in real time and upload the light intensity detection result to the host computer. The method for controlling the on / off state of the lighting device according to the light intensity detection result includes: obtaining the light intensity detection result detected by the light sensor and analyzing the light intensity detection result. When the light intensity detection result is that the light intensity is less than a first preset light intensity, it indicates that the current greenhouse light conditions are insufficient, and the lighting device is controlled to be in an on state. When the light intensity is greater than the first preset light intensity, it indicates that the current greenhouse light conditions meet the lighting requirements, and the lighting device is controlled to be in an off state. Controlling the on / off state of the lighting device according to the light intensity detection result avoids relying entirely on weather forecasts and planting experience to determine whether the lighting device needs to be turned on, improves the accuracy of the light intensity analysis and the intelligence of controlling the lighting device switch, and at the same time, the lighting device is only turned on when the light intensity is less than the preset light intensity threshold, thereby avoiding energy waste.

[0101] Reference Figure 7 As shown, Figure 7 is a flow chart of a power supply method provided by another embodiment of the present application. The power supply method also includes but is not limited to steps S400 to S420. Specifically,

[0102] Step S400: obtaining a light intensity detection result detected by a light sensor;

[0103] Step S410: When the light intensity detection result shows that the current light intensity is greater than the second preset light intensity, determining the light intensity level to which the current light intensity belongs;

[0104] Step S420: determining a second preset number of layers of light-shielding curtains required by the light-shielding module when performing the light-shielding action according to the light intensity level, wherein the second preset number is less than or equal to the first preset number.

[0105] In some embodiments of the present application, the power supply system further comprises a shading module, the shading module comprising a first preset number of layers of shading curtains; the power supply method further comprises: obtaining the light intensity detection result detected by the light sensor, and then determining the size of the light intensity detection result and the second preset light intensity; when the current light intensity is greater than the second preset light intensity, it indicates that the current greenhouse light condition is too strong, which is not conducive to plant growth, and shading treatment is needed, at this time, the light intensity range to which the current light intensity belongs is determined; the second preset number of layers of shading curtains required by the shading module when performing the shading action is determined according to the light intensity range, wherein the second preset number is less than or equal to the first preset number.

[0106] The shading module performs the shading action according to the shading instruction to reduce the light intensity in the greenhouse, so as to provide suitable light for plant growth, improve the plant growth efficiency, reduce energy waste, and possibly reduce the risk of crop damage caused by direct sunlight.

[0107] It should be noted that the shading instruction is obtained according to the light intensity detection result obtained by the upper computer, and the shading module performs the corresponding shading action according to the shading instruction sent by the upper computer to automatically adjust the number of shading curtains and the angle of the shading curtains or the overall lifting action of the shading curtains, thereby completing the intelligent control function of the shading curtains. When the light intensity detection result indicates that the light intensity is moderate strong light, the shading instruction sent by the upper computer controls the shading module to perform the shading action with one layer of shading curtains; when the light intensity detection result indicates that the light intensity is high strong light, the shading instruction sent by the upper computer controls the shading module to perform the shading action with two layers of shading curtains; the shading module can automatically adjust the shading measures according to the changes of the surrounding natural conditions, such as seasons, dates, different time periods, and different solar elevation angles and azimuth angles, so as to block the radiant heat and reduce direct sunlight, avoid glare, fully utilize natural light, and save energy. In this way, the shading module helps to optimize the light conditions in the greenhouse, improves the crop growth efficiency, reduces energy waste, and possibly reduces the risk of crop damage caused by direct sunlight.

[0108] Referring to Figure 8 , Figure 8Fig. 1 is a structural schematic diagram of a controller 1000 provided by an embodiment of the present application, which comprises a processor 1001, which can be implemented in the form of a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, etc., and is used to execute relevant programs to implement the method provided by the embodiment of the present application; a memory 1002, which can be implemented in the form of a ROM (Read Only Memory), a static storage device, a dynamic storage device, or a RAM (Random Access Memory), etc. The memory 1002 can store an operating system and other application programs, and when the technical solutions provided by the embodiments of the present application are implemented by software or firmware, the relevant program codes are saved in the memory 1002 and are called and executed by the processor 1001 to implement the embodiments of the present application; an input / output interface 1003, which is used to implement information input and output; a communication interface 1004, which is used to implement the communication interaction between the device and other devices, and can realize communication through a wired manner (for example, a USB, a network cable, etc.) or a wireless manner (for example, a mobile network, WIFI, Bluetooth, etc.); and a bus, which is used to transmit information between various components (for example, the processor 1001, the memory 1002, the input / output interface 1003, and the communication interface 1004) of the device. The processor 1001, the memory 1002, the input / output interface 1003, and the communication interface 1004 are communicatively connected to each other inside the device through the bus.

[0109] As will be appreciated by one of ordinary skill in the art, all or some of the steps, systems, etc. in the methods disclosed above can be embodied in software, firmware, hardware, and / or suitable combinations thereof. Some or all of the physical components can be implemented with software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or can be implemented as hardware, or as an integrated circuit, such as an application- specific integrated circuit. Such software can be distributed on computer readable media, which can comprise computer readable storage media (or non-transitory media), and communication media (or transitory media). As is known to those of ordinary skill in the art computing readable storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer readable storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Further, as will be appreciated by one skilled in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as carrier waves or other transport mechanisms, and includes any information delivery media.

[0110] Additional features and advantages of the application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof.

Claims

1. A power supply system characterized by comprising: include: Lighting equipment, used to provide lighting conditions for crops; A photovoltaic string, configured to convert solar energy into electrical energy, the photovoltaic string comprising a first power output port and a second power output port, the first power output port of the photovoltaic string being connected to a power interface of the illumination device to provide power support to the illumination device; An electric energy interconnection area includes a plurality of electric devices and a power supply station, wherein the second power output port of the photovoltaic string is connected to the power supply station via a cable, and the power output port of the power supply station is connected to the power interface of each electric device via a cable, so that power is supplied to each electric device via the power output port of the power supply station; an electric energy detection device, configured to detect the remaining power of the lighting device and the remaining power of a plurality of electric devices in the electric energy connection area, and generate a remaining power detection result; A light sensor is used to obtain the light intensity of the environment and generate a light intensity detection result; The host computer is used to obtain the remaining power detection result detected by the electric energy detection device, and control the photovoltaic string to supply power to the lighting device through the first power supply output port and / or to supply power to the power supply station in the power connection area through the second power supply output port according to the remaining power detection result, so as to supply power to each electrical device through the power supply output port of the power supply station; it is also used to obtain the light intensity detection result detected by the light sensor, and control the switching state of the lighting device according to the light intensity detection result.

2. The power supply system of claim 1, wherein It also includes a shading module, which is used to be controlled by a shading instruction sent by the host computer to perform a corresponding shading action, wherein the shading instruction is obtained according to a light intensity detection result obtained by the host computer.

3. The power supply system of claim 1, wherein, The device also includes a reflective module, which is used to reflect sunlight to crops.

4. A power supply method characterized by, Applied to the power supply system according to any one of claims 1 to 3, the power supply method comprises: Obtaining a remaining power detection result detected by an electric energy detection device, and controlling the photovoltaic string to supply power to the lighting device through the first power output port and / or to supply power to the power supply station in the power connection area through the second power output port according to the remaining power detection result, so as to supply power to each electrical device through the power output port of the power supply station; Acquire a light intensity detection result detected by a light sensor, and control a switch state of the lighting device according to the light intensity detection result.

5. The power supply method according to claim 4, wherein The controlling, according to the remaining power detection result, the photovoltaic string to supply power to the lighting device through the first power output port and / or to supply power to the power supply station in the power connection area through the second power output port, so as to supply power to each power-consuming device through the power output port of the power supply station includes: When the remaining power detection result indicates that the remaining power of the lighting device is less than a first power threshold and the remaining power of the power supply station in the power connection area is greater than a second power threshold, controlling the photovoltaic string to supply power to the lighting device through the first power output port for a first duration; when the remaining power detection result indicates that the remaining power of the lighting device is greater than the second power threshold and the remaining power of the power supply station of the power contact area is less than the first power threshold, controlling the photovoltaic string to supply power to the power supply station of the power contact area through the second power supply output port for a second time length, so as to supply power to each power consumption device through the power supply output port of the power supply station; when the remaining power detection result indicates that the remaining power of the lighting device is greater than the first power threshold and less than the second power threshold, querying a third time length matching the remaining power of the lighting device in a first preset power supply table, and controlling the photovoltaic string to supply power to the lighting device through the first power supply output port for the third time length; and when the remaining power detection result indicates that the remaining power of the power supply station of the power contact area is greater than the first power threshold and less than the second power threshold, querying a fourth time length matching the remaining power of the power supply station in a second preset power supply table, and controlling the photovoltaic string to supply power to the power supply station through the second power supply output port for the fourth time length.

6. The power supply method according to claim 5, wherein After the control of the photovoltaic string supplying power to the power supply station through the second power supply output port for the fourth time length, the method further comprises: determining the power supply distance between each power consumption device and the power supply station of the power contact area; screening power consumption devices satisfying the condition that the power supply distance is less than a preset distance as power consumption devices to be charged; obtaining the remaining power of the power consumption devices to be charged; querying a power supply time length matching the remaining power of the power consumption devices to be charged in a third preset power supply table; controlling the power supply output port of the power supply station to provide power support of the matching power supply time length to each power consumption device to be charged through a cable, so as to supply power to each power consumption device through the power supply output port of the power supply station.

7. The power supply method according to claim 5, wherein Further comprising: obtaining the remaining power of the lighting device in a first time period, and when the remaining power of the lighting device in the first time period is less than a third power threshold, controlling the photovoltaic string to supply power to the lighting device only through the first power supply output port, the first time period being a power consumption peak period of the lighting device; obtaining the remaining power of the power supply station in a second time period, and when the remaining power of the power supply station in the second time period is less than a fourth power threshold, controlling the photovoltaic string to supply power to the power supply station only through the second power supply output port, the second time period being a power consumption peak period of the power consumption device of the power contact area.

8. The power supply method according to claim 4, wherein The control of the switching state of the lighting device according to the lighting intensity detection result comprises: when the lighting intensity detection result is that the current lighting intensity is less than a first preset lighting intensity, controlling the lighting device to be in an open state; when the lighting intensity detection result is that the current lighting intensity is greater than the first preset lighting intensity, controlling the lighting device to be in a closed state.

9. The power supply method according to claim 4, wherein The power supply system further comprises a light shielding module, the light shielding module comprising a first preset number of layers of light shielding curtains, and the power supply method further comprises: when the lighting intensity detection result is that the current lighting intensity is greater than a second preset lighting intensity, determining the lighting intensity range to which the current lighting intensity belongs; The second preset number of layers of the light-shielding curtain required by the light-shielding module when performing the light-shielding action is determined according to the light intensity level, wherein the second preset number is less than or equal to the first preset number.

10. A controller characterized by comprising: The application further discloses a computer readable storage medium storing the computer program. The application further discloses a computer readable storage medium storing the computer program.

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