Power supply system, power supply method and controller

Abstract

The invention discloses a power supply system, a power supply method and a controller. The power supply system comprises illumination equipment; a first power supply output port of the photovoltaic group string is connected with a power supply interface of the illumination equipment; the electric energy connection area comprises a plurality of electric equipment and a power supply station, a second power supply output port of the photovoltaic group string is connected with the power supply station through a cable, and a power supply output port of the power supply station is connected to a power interface of the electric equipment through a cable; the electric energy detection device is used for detecting the residual electric quantity of the illumination equipment and the residual electric quantity of the electric energy connection area and generating a residual electric quantity detection result; the illumination sensor is used for generating an illumination intensity detection result; the upper computer is used for controlling the photovoltaic group string to supply power to the illumination equipment through the first power supply output port and / or supply power to the electric energy connection area through the second power supply output port according to the residual electric quantity detection result; and controlling the on-off state of the illumination equipment according to the illumination intensity detection result. The flexibility and rationality of power supply of the power supply system are improved, and energy waste is avoided.

Description

Technical Field

[0001] This application relates to the field of new energy technologies, and particularly to a power supply system, a power supply method, and a controller. Background Art

[0002] In greenhouse cultivation, lighting equipment is one of the key factors for improving crop yield and quality. With the popularization of new energy, charging lighting equipment through photovoltaic strings to provide energy is an effective way to utilize solar energy. However, if the lighting equipment is used improperly, it may lead to energy waste. Currently, growers mainly judge whether to turn on the lighting equipment based on weather forecasts and cultivation experience, and manually start the lighting equipment to illuminate the crops, with a low degree of automation. For example, when the weather forecast is cloudy or rainy, the lighting equipment is turned on. However, the weather forecast is a general prediction of the weather for the whole day and cannot accurately represent the actual weather and lighting conditions at different times. If the lighting equipment is turned on all day according to the weather forecast, it will cause energy waste and the lighting equipment cannot be flexibly controlled according to the current actual weather and lighting conditions. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art. To this end, embodiments of this application provide a power supply system, a power supply method, and a controller, which can improve the flexibility of power supply 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, embodiments of this application provide a power supply system, including:

[0005] A lighting device for providing lighting conditions for crops;

[0006] A photovoltaic string for converting solar energy into electrical energy. The photovoltaic string includes a first power supply output port and a second power supply output port. The first power supply output port of the photovoltaic string is connected to the power supply interface of the lighting device to provide power support for the lighting device;

[0007] An electrical energy connection area including multiple electrical devices and a power supply station. The second power supply output port of the photovoltaic string is connected to the power supply station through a cable, and the power supply output port of the power supply station is respectively connected to the power supply interfaces of each electrical device through a cable to supply power to each electrical device through the power supply output port of the power supply station;

[0008] An electrical energy detection device for detecting the remaining power of the lighting device and the remaining power of multiple electrical devices in the electrical energy connection area and generating a remaining power detection result;

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

[0010] The host computer is used to obtain the remaining power detection result detected by the power 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 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 on / off state of the lighting device according to the light intensity detection result.

[0011] According to some embodiments of the present application, it further includes a light shielding module, and the light shielding module is used to perform corresponding light shielding actions controlled by the light shielding instruction sent by the host computer, wherein the light shielding instruction is obtained according to the light intensity detection result obtained by the host computer.

[0012] According to some embodiments of the present application, it further includes a light reflecting module, and the light reflecting module is used to reflect sunlight to crops.

[0013] In a second aspect, an embodiment of the present application provides a power supply method, which is applied to the power system described in the technical solution of the first aspect above. The power supply method includes:

[0014] Obtain the remaining power detection result detected by the power 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 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;

[0015] Obtain 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.

[0016] According to some embodiments of the present application, the step of 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 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 includes:

[0017] 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, control the photovoltaic string to supply power to the lighting device through the first power supply output port for a first duration;

[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 in the power connection area is less than the first power threshold, control the photovoltaic string to supply power to the power supply station in the power connection area through the second power supply output port for a second duration, so as to supply power to each electrical device through the power supply 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, query the third duration matching the remaining power of the lighting device in the first preset power supply table, and control the photovoltaic string to supply power to the lighting device through the first power supply output port for the third duration; 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, query the fourth duration matching the remaining power of the power supply station in the second preset power supply table, and control the photovoltaic string to supply power to the power supply station through the second power supply output port for the fourth duration.

[0020] After controlling the photovoltaic string to supply power to the power supply station through the second power supply output port for the fourth duration, the method further includes:

[0021] Determine the power supply distance between each electrical device in the power connection area and the power supply station;

[0022] Screen out the electrical devices that meet the condition that the power supply distance is less than the preset distance as the electrical devices to be charged;

[0023] Obtain the remaining power of the electrical devices to be charged;

[0024] Query the power supply duration matching the remaining power of the electrical devices to be charged in the third preset power supply table;

[0025] Control the power supply output port of the power supply station to provide power support for each electrical device to be charged through the cable for a matching power supply duration, so as to supply power to each electrical device through the power supply output port of the power supply station.

[0026] According to some embodiments of the present application, obtain the remaining power of the lighting device in the first time period. When the remaining power of the lighting device in the first time period is less than the third power threshold, control the photovoltaic string to supply power to the lighting device only through the first power supply output port. The first time period is the peak power consumption period of the lighting device;

[0027] Obtain the remaining power of the power supply station in the second time period. When the remaining power of the power supply station in the second time period is less than the fourth power threshold, control the photovoltaic string to supply power to the power supply station only through the second power output port. The second time period is the peak power consumption period of the electrical equipment in the power connection area.

[0028] According to some embodiments of the present application, the controlling the on / off state of the lighting device according to the light intensity detection result includes:

[0029] When the light intensity detection result is that the current light intensity is less than the first preset light intensity, control the lighting device to be in the on state;

[0030] When the light intensity detection result is that the current light intensity is greater than the first preset light intensity, control the lighting device to be in the off state.

[0031] According to some embodiments of the present application, the power supply system further includes a shading module. The shading module includes a shading thin curtain with a first preset number of layers. The power supply method further includes:

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

[0033] Determine the second preset number of layers of the shading thin curtain required for the shading module to perform the shading action according to the light intensity level, where the second preset number is less than or equal to the first preset number.

[0034] In a third aspect, an embodiment of the present application further provides a controller, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor runs the computer program, it executes the method described in the technical solution of the second aspect above.

[0035] The power supply system, power supply method, and controller provided by the embodiments of the present application at least have one of the following advantages or beneficial effects: The power supply system includes an electric energy detection device. The electric energy detection device is connected to the lighting device and the power connection area. The electric energy detection device can detect the remaining power of the lighting device, the power supply station in the power connection area, and the remaining power of other electrical equipment in real time, and generate a remaining power detection result. Then, the remaining power detection result is uploaded to the host computer. The host computer controls the photovoltaic string to supply power to the lighting device through the first power output port and / or 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 equipment through the power output port of the power supply station to achieve power supply. It can reasonably provide power support according to the actual remaining power of the current lighting device, the power supply station in the power connection area, and other electrical equipment, improve the flexibility of power supply of the power supply system, improve the rationality of power supply, and at the same time improve the utilization rate of the electric energy of the photovoltaic string. The light sensor detects the light intensity of the current environment in real time and uploads the light intensity detection result to the host computer. The host computer analyzes the light intensity detection result. When the light intensity is less than the 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-off state of the lighting device by the host computer according to the light intensity detection result, it is avoided to completely rely on weather forecasts and planting experience to judge whether the lighting device needs to be turned on, improving the accuracy of light intensity analysis and the degree of intelligence in controlling the on-off of the lighting device. 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.

[0036] Other features and advantages of the present application will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained by the structures specifically pointed out in the specification, claims, and drawings. Brief Description of the Drawings

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

[0038] Figure 2 is a schematic structural 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 4It is a flowchart of a method provided by an embodiment of the present application 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 connection area through a second power supply output port, so as to supply power to each electrical device through the power supply output port of the power supply station;

[0041] Figure 5 It is a flowchart of a power supply method provided by another embodiment of the present application;

[0042] Figure 6 It is a flowchart of a method provided by an embodiment of the present application for controlling the on / off state of a lighting device according to the detection result of light intensity;

[0043] Figure 7 It is a flowchart of a power supply method provided by another embodiment of the present application;

[0044] Figure 8 It is a schematic structural diagram of a controller provided by an embodiment of the present application. Detailed implementation manners

[0045] This part will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it should not be construed as a limitation on the protection scope of the present application.

[0046] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, understand greater than, less than, exceeding, etc. as not including the number itself, understand above, below, within, etc. as including the number itself, "any one" means one or more, "at least one of the following" and its similar expressions refer to any combination of these items, including any combination of single items or plural items. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0047] It should be noted that words such as setting, installing, and connecting in the embodiments of the present application should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the embodiments of the present application in combination with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that 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 the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0049] In greenhouse cultivation, lighting equipment is one of the key factors for improving crop yield and quality. With the popularization of new energy, charging lighting equipment through photovoltaic strings to provide energy is an effective way to utilize solar energy. However, if the lighting equipment is used improperly, it may lead to energy waste. Currently, growers mainly judge whether to turn on the lighting equipment based on weather forecasts and planting experience, and manually start the lighting equipment to illuminate the crops, with a low degree of automation. For example, when the weather forecast is cloudy or rainy, the lighting equipment is turned on. However, the weather forecast is a general prediction of the weather for the whole day and cannot accurately represent the actual weather and lighting conditions at different times. If the lighting equipment is turned on all day according to the weather forecast, it will cause energy waste and the on / off of the lighting equipment cannot be flexibly controlled according to the current actual weather and lighting conditions.

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

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

[0052] Refer to Figure 1 as shown Figure 1It is a schematic structural diagram of a power supply system provided by an embodiment of the present application. The power supply system includes a lighting device, a photovoltaic string, a power connection area, a power detection device, a light sensor, and a host computer; the lighting device is used to provide lighting conditions for crops; the photovoltaic string is used to convert solar energy into electrical energy. The photovoltaic string includes a first power supply output port and a second power supply output port. The first power supply output port of the photovoltaic string is connected to the power supply interface of the lighting device to provide power support for the lighting device; the power connection area includes multiple electrical devices and a power supply station. The second power supply output port of the photovoltaic string is connected to the power supply station through a cable, and the power supply output port of the power supply station is respectively connected to the power supply interfaces of each electrical device through a cable to supply power to each electrical device through the power supply output port of the power supply station; the power detection device is used to detect the remaining power of the lighting device and the remaining power of multiple electrical devices in the power connection area and generate a remaining power detection result; the 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 power 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 power connection area through the second power supply output port, 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 on / off state of the lighting device according to the light intensity detection result.

[0053] The power supply system includes an electric energy detection device. The electric energy detection device is connected to a lighting device and an electric energy connection area. The electric energy detection device can detect the remaining power of the lighting device, the power supply station in the electric energy connection area, and the remaining power of other electrical devices in real time, and generate a remaining power detection result. Then, the remaining power detection result is uploaded to the host computer. The host 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 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, realizing power supply. It can reasonably provide power support according to the actual remaining power of the current lighting device, the power supply station in the electric energy connection area, and other electrical devices, improving the flexibility of power supply of the power supply system, 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 light intensity of the current environment in real time and uploads the light intensity detection result to the host computer. The host computer analyzes the light intensity detection result. When the light intensity is less than the first preset light intensity, it controls the lighting device to be in the on state. When the light intensity is greater than the first preset light intensity, it controls the lighting device to be in the off state. By controlling the on-off state of the lighting device according to the light intensity detection result by the host computer, it avoids completely relying on weather forecasts and planting experience to judge whether the lighting device needs to be turned on, improving the accuracy of light intensity analysis and the intelligent degree of controlling the on-off of the lighting device. 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] Referring to Figure 2 as shown, Figure 2 is a schematic structural diagram of another power supply system provided by an embodiment of the present application. The power supply system further includes a shading module. The shading module is used to perform corresponding shading actions under the control of a shading instruction sent by the host computer, where the shading instruction is obtained according to the light intensity detection result obtained by the host computer.

[0055] The power supply system includes a light sensor. The light sensor is used to detect the light intensity of the environment and generate a light intensity detection result. The power supply system further includes a shading module. The power supply system is applied to a crop planting greenhouse. When the sunlight intensity in the planting greenhouse is too strong, it is not conducive to crop growth and is likely to damage the crops. Therefore, by setting the 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 the first preset light intensity, and the shading module performs a shading action according to the shading instruction to reduce the light intensity in the greenhouse.

[0056] In the embodiment of the present application, the light-shielding module includes light-shielding thin curtains of a first preset number of layers. The light-shielding module is used to perform corresponding light-shielding actions controlled by a light-shielding instruction sent by a host computer, where the light-shielding instruction is obtained based on the light intensity detection result acquired by the host computer. In one embodiment, when the light intensity detection result indicates that the light intensity is moderately strong light, the light-shielding instruction sent by the host computer is to control the light-shielding module to perform a light-shielding action with one layer of light-shielding thin curtain. When the light intensity detection result indicates that the light intensity is highly strong light, the light-shielding instruction sent by the host computer is to control the light-shielding module to perform a light-shielding action with two layers of light-shielding thin curtains.

[0057] The light-shielding instruction is obtained based on the light intensity detection result acquired by the host computer. The light-shielding module is controlled by the light-shielding instruction sent by the host computer to perform corresponding light-shielding actions, which can automatically adjust the number of light-shielding thin curtains, the angle of the light-shielding thin curtains, or perform the overall lifting action of the light-shielding thin curtains, completing the intelligent control function of the light-shielding thin curtains. The technical implementation of the light-shielding module may be based on the technology of the LONWORKS control network to achieve the intelligent control of the flipping angle of light-shielding thin curtains in different orientations. The light-shielding module can automatically adjust the light-shielding measures according to the changes of surrounding natural conditions, such as seasons, dates, different time periods, and the solar elevation angle and azimuth angle in different orientations, blocking radiant heat, reducing direct sunlight, avoiding glare, and making full use of natural light to save energy. In this way, the light-shielding module helps to optimize the light conditions in the greenhouse, improve the crop growth efficiency, reduce energy waste at the same time, 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-reflecting module, and the light-reflecting module is used to reflect sunlight onto the crops.

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

[0060] It can be understood that different types of crops have different requirements for light. For example, heliophytes need more direct light, while sciophytes prefer scattered light. The light-reflecting module can be adjusted according to the needs of the crops. By providing uniform light, the light-reflecting module helps to provide suitable light conditions, which is conducive to improving the appearance and nutritional value of the crops. Using the light-reflecting module to reflect sunlight can reduce the need for artificial lighting, thereby saving energy and reducing costs.

[0061] The role of the reflective module in greenhouse cultivation is multi-faceted. It can not only improve the lighting efficiency of crops, promote crop growth, but also optimize the lighting conditions and improve the quality of crops. By reasonably using the reflective module, the utilization of lighting equipment can be reduced, thereby reducing the electricity consumption of lighting equipment, achieving energy-saving and environmental protection effects, and bringing many benefits to greenhouse cultivation.

[0062] Refer to Figure 3 as shown, 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 device through the first power supply output port and / or 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;

[0064] Step S200: Obtain 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.

[0065] In some embodiments of the present application, the power supply method is applied to a power supply system. The power supply system includes: a lighting device for providing lighting conditions for crops; a photovoltaic string for converting solar energy into electrical energy. The photovoltaic string includes a first power supply output port and a second power supply output port. The first power supply output port of the photovoltaic string is connected to the power supply interface of the lighting device to provide power support for the lighting device; a power connection area including multiple electrical devices and a power supply station. The second power supply output port of the photovoltaic string is connected to the power supply station through a cable, and the power supply output port of the power supply station is respectively connected to the power supply interfaces of each electrical device through a cable to supply power to each electrical device through the power supply output port of the power supply station; a power detection device for detecting the remaining power of the lighting device and the remaining power of multiple electrical devices in the power connection 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; a host computer.

[0066] The power supply method includes: obtaining the remaining power detection results detected by the power detection device, where the remaining power detection results include the remaining power of the lighting device, the power supply station in the power connection area, and the remaining power of other electrical equipment. According to the remaining power detection results, 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 power connection area through the second power supply output port, so as to supply power to each electrical equipment through the power supply output port of the power supply station, realizing power supply. It can reasonably provide power support according to the actual remaining power of the current lighting device, the power supply station in the power connection area, and other electrical equipment, improving the flexibility of power supply of the power supply system, the rationality of power supply, and at the same time improving the utilization rate of the electrical energy of the photovoltaic string. Obtain the light intensity detection results detected by the light sensor, analyze the light intensity detection results, and control the on / off state of the lighting device according to the light intensity detection results, avoiding completely relying on weather forecasts and planting experience to judge whether to turn on the lighting device, improving the accuracy of light intensity analysis and the intelligent degree of controlling the on / off of the lighting device. At the same time, only turn on the lighting device when the light intensity is less than the preset light intensity threshold, avoiding energy waste.

[0067] Refer to Figure 4 as shown Figure 4 is a flowchart of a method provided by an embodiment of the present application 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 connection area through a second power supply output port, so as to supply power to each electrical equipment through the power supply output port of the power supply station, including but not limited to steps S110 to S140. Specifically,

[0068] Step S110: Obtain the remaining power detection results detected by the power detection device;

[0069] Step S120: When the remaining power detection results indicate 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, control the photovoltaic string to supply power to the lighting device through the first power supply output port for a first duration;

[0070] Step S130: When the remaining power detection results indicate that the remaining power of the lighting device is greater than the second power threshold and the remaining power of the power supply station in the power connection area is less than the first power threshold, control the photovoltaic string to supply power to the power supply station in the power connection area through the second power supply output port for a second duration, so as to supply power to each electrical equipment through the 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, query the third duration that matches the remaining power of the lighting device in the first preset power supply table, and control the photovoltaic string to supply power to the lighting device through the first power output port for the third duration; 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, query the fourth duration that matches the remaining power of the power supply station in the second preset power supply table, and control the photovoltaic string to supply power to the power supply station through the second power output port for the fourth duration.

[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 includes the remaining power of the lighting device, the power supply station in the power connection area, and the remaining power of other electrical equipment. The power supply object and 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. 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 for the time being; at this time, control the photovoltaic string to supply power to the lighting device through the first power output port for the first duration. By controlling the photovoltaic string to only supply power to the lighting device through the first power output port, the power supply efficiency of the photovoltaic string for the lighting device can be improved, the rationality of power supply can be improved, and energy waste can be avoided at the same time.

[0074] It should be noted that, in some embodiments of the present application, the first power threshold is 1 kw. Those skilled in the art can set the size of the first power threshold according to the model of the lighting device and the number of electrical equipment in the power connection area. The embodiments of the present application do not limit the size of the first power threshold.

[0075] It should be noted that, in some embodiments of the present application, the second power threshold is 10 kw. Those skilled in the art can set the size of the second power threshold according to the model of the lighting device and the number of electrical equipment in the power connection area. The embodiments of the present application do not limit the size of the second power threshold.

[0076] It should be noted that, in some embodiments of the present application, the first duration is one hour. Those skilled in the art can set the size of the first duration according to the model of the lighting device and the area of the planting greenhouse. The embodiments of the present application do not limit the size of the first duration.

[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 in 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 and it is in a power supply state and does not need to be charged temporarily, while the remaining power of the power supply station in the power connection area is insufficient and it is in a low power state and needs to be charged in time; at this time, control the photovoltaic string to supply power to the power supply station in the power connection area through the second power supply output port for a second duration, so as to supply power to each electrical device through the power supply 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 at the same time.

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

[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, query the third duration matching the remaining power of the lighting device in the first preset power supply table, and control the photovoltaic string to supply power to the lighting device through the first power supply output port for the third duration; 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, query the fourth duration matching the remaining power of the power supply station in the second preset power supply table, and control the photovoltaic string to supply power to the power supply station through the second power supply output port for the fourth duration.

[0080] It can be understood that the first preset power supply table stores the required charging duration corresponding one by one to the remaining power of the lighting device. 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, determine the third duration corresponding to the current remaining power of the lighting device from the first preset power supply table, and control the photovoltaic string to supply power to the lighting device through the first power supply output port for the third duration. The second preset power supply table stores the required charging duration corresponding one by one to the remaining power of the power supply station. 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, determine the fourth duration corresponding to the current remaining power of the power supply station in the power connection area from the second preset power supply table, and control the photovoltaic string to supply power to the power supply station through the second power supply output port for the fourth duration.

[0081] According to the magnitudes of the remaining power of the lighting device and the remaining power of the power supply station in the power connection area in the remaining power detection result, respectively determine the third duration corresponding to the current remaining power of the lighting device in the first preset power supply table, and determine the fourth duration corresponding to the current remaining power of the power supply station in the power connection area in the second preset power supply table. Then control the photovoltaic string to supply power to the lighting device through the first power output port for the third duration, and control the photovoltaic string to supply power to the power supply station through the second power output port for the fourth duration. By flexibly controlling the power supply scheme of the photovoltaic string according to the remaining power detection result, the flexibility of the power supply system can be improved, the rationality of power supply can be enhanced, energy waste can be avoided, and the energy utilization rate can be increased.

[0082] It should be noted that the first preset power supply table stores the required charging durations corresponding one by one to the remaining power of the lighting device. For example, when the remaining power of the lighting device is 2 kw, the third duration required for charging is 50 minutes; when the remaining power of the lighting device is 3 kw, the third duration required for charging is 45 minutes; when the remaining power of the lighting device is 4 kw, the third duration required for charging is 30 minutes. The second preset power supply table stores the required charging durations corresponding one by one to the remaining power of the power supply station. When the remaining power of the power supply station is 2 kw, the fourth duration required for charging is 150 minutes; when the remaining power of the power supply station is 3 kw, the fourth duration required for charging is 120 minutes; when the remaining power of the power supply station is 3 kw, the fourth duration required for charging is 100 minutes; when the remaining power of the power supply station is 6 kw, the fourth duration required for charging is 50 minutes. The embodiments of the present application do not limit the magnitudes of the third duration and the fourth duration.

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

[0084] Step S150: Determine the power supply distances between each electrical device in the power connection area and the power supply station;

[0085] Step S151: Screen out the electrical devices that meet the condition that the power supply distance is less than the preset distance as the electrical devices to be charged;

[0086] Step S152: Obtain the remaining power of the electrical devices to be charged;

[0087] Step S153: Query in the third preset power supply table for the power supply duration that matches the remaining power of the electrical devices to be charged;

[0088] Step S154: Control the power output port of the power supply station to provide power support of matching power supply duration to each power-consuming device to be charged through the cable, so as to supply power to each power-consuming device through the power output port of the power supply station.

[0089] In some embodiments of the present application, the power supply method further includes: determining the power supply distance between each power-consuming device and the power supply station in the power connection area, so as to facilitate screening out power-consuming devices that meet the power supply requirements of the power supply station. The power supply distance is an important indicator 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 a smart grid, electric energy can be transmitted stably and in large capacity through a traction network with a cable structure. It should be noted that according to the research in "Analysis of the Limit Power Supply Distance of Urban Rail AC Power Supply System", the maximum single-section power supply length of the urban rail transit AC power supply system can reach 9.31 kilometers. 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. Those skilled in the art can set a preset distance based on these data, and screen out power-consuming devices that meet the power supply distance less than the preset distance as power-consuming devices to be charged. After determining the electrical equipment to be charged that meets the power supply distance, the remaining power of each electrical equipment to be charged is obtained respectively, and each link of the power supply system is monitored in real time, including power production, transmission, and distribution, to improve the reliability and safety of power supply; the power supply time that matches the remaining power of each electrical equipment to be charged is queried in the third preset power supply table. It can be understood that the third preset power supply table stores the required charging time that corresponds one-to-one to the remaining power of the electrical equipment to be charged, and controls the power supply output port of the power supply station to provide power support of the matching power supply time to each electrical equipment to be charged through a cable, so as to realize power supply to each electrical equipment through the power supply output port of the power supply station.

[0090] Before the power supply station provides power support of matching power supply duration to each power-consuming device to be charged through a cable, the power supply distance between each power-consuming device in the power connection area and the power supply station is first determined, and power-consuming devices that satisfy the power supply distance less than a preset distance are screened out as power-consuming devices to be charged, so as to ensure the reliability and safety of power transmission. Afterwards, the power supply duration that matches the remaining power of the power-consuming device to be charged is queried in the third preset power supply table, and the power supply output port of the power supply station is controlled to provide power support of matching power supply duration to each power-consuming device to be charged through the cable, thereby realizing power supply to each power-consuming device through the power supply output port of the power supply station, thereby improving the flexibility of power supply of the power supply system, improving the rationality of power supply, avoiding energy waste, and improving energy utilization.

[0091] In another embodiment of the present application, the power supply method further includes but is not limited to step S300 to step S310. Specifically,

[0092] Step S300: Obtain the remaining power of the lighting device in the first time period. When the remaining power of the lighting device in the first time period is less than the third power threshold, control the photovoltaic string to supply power to the lighting device only through the first power supply output port. The first time period is the peak power consumption period of the lighting device;

[0093] Step S310: Obtain the remaining power of the power supply station in the second time period. When the remaining power of the power supply station in the second time period is less than the fourth power threshold, control the photovoltaic string to supply power to the power supply station only through the second power supply output port. The second time period is the peak power consumption period of the electrical equipment in the power connection area.

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

[0095] During the peak power consumption period of the electrical equipment in the power connection area, obtain the remaining power of the power supply station. When the remaining power of the power supply station is less than the fourth power threshold, it indicates that the remaining power of the power supply station is insufficient and it is in a low power state, and it needs to be charged in time; at this time, control the photovoltaic string to supply power to the power supply station only through the second power supply output port. By monitoring the remaining power of the power supply station during the peak power consumption period of the electrical equipment in the power connection area, when the remaining power of the power supply station is insufficient, power supply can be provided to the power supply station in time to ensure that the power supply station can supply power to each electrical equipment through the power supply output port of the power supply station during the peak power consumption period of the electrical equipment in the power connection area, ensure the normal use of the power supply of each electrical equipment, improve the power use experience, and at the same time improve the reliability of the power supply method of the power system.

[0096] Refer to Figure 6 as shown Figure 6 is a flowchart of a method for controlling the on / off state of a lighting device according to the lighting intensity detection result provided by an embodiment of the present application. The method for controlling the on / off state of a lighting device according to the lighting intensity detection result includes but is not limited to steps S210 to S230. Specifically,

[0097] Step S210: Obtain the lighting intensity detection result detected by the lighting sensor;

[0098] Step S220: When the detected light intensity is less than the first preset light intensity, control the lighting device to be in the on state;

[0099] Step S230: When the detected light intensity is greater than the first preset light intensity, control the lighting device to be in the off state.

[0100] In some embodiments of the present application, the power supply system includes a light sensor. The light sensor is used to detect the light intensity of the current environment in real time and upload the detected light intensity result to the host computer. The method for controlling the on / off state of the lighting device according to the detected light intensity result includes: obtaining the detected light intensity result detected by the light sensor, and analyzing the detected light intensity result. When the detected light intensity result is that the light intensity is less than the first preset light intensity, it indicates that the current greenhouse lighting condition is insufficient, and control the lighting device to be in the on state. When the light intensity is greater than the first preset light intensity, it indicates that the current greenhouse lighting condition meets the lighting requirement, and control the lighting device to be in the off state. Controlling the on / off state of the lighting device according to the detected light intensity result avoids completely relying on weather forecasts and planting experience to judge whether the lighting device needs to be turned on, improves the accuracy of light intensity analysis and the intelligent degree of controlling the on / off of the lighting device, and at the same time only turns on the lighting device when the light intensity is less than the preset light intensity threshold, avoiding energy waste.

[0101] Refer to Figure 7 shown in Figure 7 is a flowchart of a power supply method provided by another embodiment of the present application. The power supply method further includes but is not limited to steps S400 to S420. Specifically,

[0102] Step S400: Obtain the detected light intensity result detected by the light sensor;

[0103] Step S410: When the detected light intensity is greater than the second preset light intensity, determine the light intensity level to which the current light intensity belongs;

[0104] Step S420: Determine the second preset number of layers of light-shielding thin curtains required for the light-shielding module to perform the light-shielding action according to the light intensity level, where 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 includes a shading module, and the shading module includes shading thin curtains with a first preset number of layers; the power supply method further includes: obtaining the light intensity detection result detected by the light sensor, and then, determining the magnitude relationship between the light intensity detection result and a second preset light intensity. When the current light intensity is greater than the second preset light intensity, it indicates that the current light condition in the greenhouse is too strong and is not conducive to plant growth, and shading treatment is required. At this time, determine the light intensity level to which the current light intensity belongs; determine the second preset number of layers of shading thin curtains required by the shading module when performing the shading action according to the light intensity level, where the second preset number is less than or equal to the first preset number.

[0106] The shading module performs a shading action according to the shading instruction, reducing the light intensity in the greenhouse to provide light suitable for plant growth conditions, improving the plant growth efficiency, while reducing energy waste and possibly reducing the risk of crop damage caused by strong sunlight direct irradiation.

[0107] It should be noted that the shading instruction is obtained based on the light intensity detection result acquired by the host computer. The shading module is controlled by the shading instruction sent by the host computer to perform the corresponding shading action, and can automatically adjust the number of shading thin curtains, the angle of the shading thin curtains, or perform the overall lifting action of the shading thin curtains to complete the intelligent control function of the shading thin curtains. When the light intensity detection result indicates that the light intensity is moderately strong light, the shading instruction sent by the host computer is to control the shading module to perform the shading action with one layer of shading thin curtain. When the light intensity detection result indicates that the light intensity is highly strong light, the shading instruction sent by the host computer is to control the shading module to perform the shading action with two layers of shading thin curtains; the shading module can automatically adjust the shading measures according to the changes in the surrounding natural conditions, such as seasons, dates, different time periods, and the solar elevation angle and azimuth angle in different orientations, blocking the radiant heat, reducing the direct sunlight, avoiding glare, and making full use of natural light to save energy. In this way, the shading module helps to optimize the light conditions in the greenhouse, improve the crop growth efficiency, while reducing energy waste and possibly reducing the risk of crop damage caused by strong sunlight direct irradiation.

[0108] Refer to Figure 8 , Figure 8FIG. 0 is a schematic structural diagram of a controller 1000 provided by an embodiment of the present application. The controller 1000 includes a processor 1001, which can be implemented in ways such as a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the methods provided by the embodiments of the present application. The memory 1002 can be implemented in forms such as a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1002 can store an operating system and other application programs. When implementing the technical solutions provided by the embodiments of this specification through software or firmware, the relevant program codes are stored in the memory 1002 and are called by the processor 1001 to execute the embodiments of the present application. The input / output interface 1003 is used to implement information input and output. The communication interface 1004 is used to implement communication interaction between this device and other devices, and can achieve communication through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). The bus is used to transmit information between various components of the device (such as the processor 1001, the memory 1002, the input / output interface 1003, and the communication interface 1004). Among them, 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] Those of ordinary skill in the art will understand that all or some of the steps and systems disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer-readable storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer-readable storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. The computer-readable storage medium includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVDs) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and that can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that the communication medium typically contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0110] Other features and advantages of the present application will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present application. The objectives and other advantages of the present application can be realized and attained by the structure particularly pointed out in the specification, claims, and drawings.

Claims

1. A power supply system, characterized in that: include: Lighting equipment, used to provide lighting conditions for crops; A photovoltaic string, used to convert solar energy into electrical 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 lighting device to provide power support to the lighting device; The power connection area includes a plurality of power-consuming devices and a power supply station, wherein the second power supply output port of the photovoltaic string is connected to the power supply station through a cable, and the power supply output port of the power supply station is respectively connected to the power supply interface of each power-consuming device through a cable, so as to supply power to each power-consuming device through the power supply output port of the power supply station; An electric energy detection device, used to detect the remaining power of the lighting device and the remaining power of multiple electric devices in the electric energy communication 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 according to claim 1, characterized in that: 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 according to claim 1, characterized in that: The device also includes a reflective module, which is used to reflect sunlight to the crops.

4. A power supply method, characterized in that: 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 the power 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 power-consuming device through the power output port of the power supply station; A light intensity detection result detected by a light sensor is obtained, and a switch state of the light device is controlled according to the light intensity detection result.

5. The power supply method according to claim 4, characterized in that: The 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 residual power detection result, so as to supply power to each power-consuming device through the power output port of the power supply station comprises: 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, the photovoltaic string is controlled 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 in the power connection area is less than the first power threshold, the photovoltaic string is controlled to supply power to the power supply station in the power connection area through the second power supply output port for a second time period, so as to supply power to each power-consuming 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, the third time duration 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 duration; 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, the fourth time duration 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 duration.

6. The power supply method according to claim 5, characterized in that: After controlling the photovoltaic string to supply power to the power supply station through the second power supply output port for a fourth time period, the method further includes: Determine the power supply distance between each power-consuming device in the power connection area and the power supply station; Screen out electrical devices that meet the requirement that the power supply distance is less than a preset distance as electrical devices to be charged; Obtaining the remaining power of the electric device to be charged; Querying a power supply duration that matches the remaining power of the electrical device to be charged in a third preset power supply table; The power output port of the power supply station is controlled to provide power support of matching power supply duration to each power-consuming device to be charged through a cable, so as to supply power to each power-consuming device through the power output port of the power supply station.

7. The power supply method according to claim 5, characterized in that: Also includes: 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 output port, the first time period being a peak power consumption period of the lighting device; Obtain the remaining power of the power supply station in the second time period. When the remaining power of the power supply station in the second time period is less than a fourth power threshold, control the photovoltaic string to supply power to the power supply station only through the second power supply output port. The second time period is the peak power consumption period of the power equipment in the power connection area.

8. The power supply method according to claim 4, characterized in that: The controlling the on / off state of the illumination device according to the illumination intensity detection result comprises: When the light intensity detection result is that the current light intensity is less than the first preset light intensity, controlling the lighting device to be in an on state; When the light intensity detection result is that the current light intensity is greater than the first preset light intensity, the lighting device is controlled to be in an off state.

9. The power supply method according to claim 4, characterized in that: The power supply system further includes a shading module, wherein the shading module includes a first preset number of layers of shading thin curtains, and the power supply method further includes: When the light intensity detection result is 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; A second preset number of layers of shading curtains required for the shading module to perform a shading 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 in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method according to any one of claims 4 to 9 when executing the computer program.

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