CN106508489A - Light-adjustable folding type diffusing glass greenhouse photovoltaic sunshade curtain - Google Patents

Abstract

The invention relates to a foldable diffuse glass greenhouse photovoltaic sunshade with adjustable illumination, comprising a central control system and a sunshade device arranged in the greenhouse; the central control system includes a main control node and a sunshade connected by wireless A drive node and a plurality of light monitoring nodes, the main control node is used to analyze the collected real-time light intensity data in the greenhouse; the sunshade drive node is connected with the sunshade device for real-time adjustment the expansion and contraction of the frame; the plurality of light intensity detection nodes are arranged at various positions in the greenhouse to collect the light intensity data in the greenhouse in real time; the sunshade device includes a frame, a folding frame, a geared motor, a support body, A number of thin-film solar panels. According to the change of the illumination environment in the greenhouse, the invention can automatically expand and contract the photovoltaic film sunshade mechanism, and fine-tune the light transmission area of the photovoltaic power generation equipment, so as to create an ecological environment suitable for plant growth in the greenhouse.

Description

A Foldable Diffuse Glass Greenhouse Photovoltaic Sunshade with Adjustable Light

technical field

The invention relates to the field of agricultural facilities, in particular to a foldable diffuse glass greenhouse photovoltaic sunshade with adjustable illumination.

Background technique

Greenhouse is a semi-closed system that creates a suitable environment for plant production. It can improve the growth environment of plants, promote the growth and development of plants, improve yield and quality, and is widely used in crop breeding, vegetable and flower cultivation, nursery stock cultivation and off-season fruits and vegetables. planting etc. The key technology for greenhouses to provide a suitable climate environment for plant growth lies in the regulation of the internal environment of the greenhouse, and the light environment is one of the most important factors, and it is also the energy source for plant growth. Illumination affects various aspects of plant growth and development, morphogenesis, gene expression, etc., and is the most critical environmental factor for plant growth. The regulation of light environment is of great significance to plant growth.

Studies have shown that excessive light can inhibit the growth of plants. In a traditional greenhouse, when the sunlight intensity is too high, the sunshade net is often spread on the top of the greenhouse to reduce the light intensity radiated to the leaves of the plants to ensure the normal growth of the plants.

Most of the existing sunshade systems use gauze, aluminum foil nets or aluminum-plated nets in the form of flat or folded nets, and use the sunshade nets wound in advance to realize the space of the sunshade nets through rack and pinion transmission or wire rope scaling. layout. The sunshade nets installed on the roof and inside the house are called inner and outer sunshade nets respectively. Because the outer sunshade directly blocks the solar radiation outside, the cooling effect is better than the inner sunshade, but because it is directly exposed to the roof, it is greatly affected by severe weather such as sandstorms, rain, snow, and lightning, which will reduce the service life of the gauze. The use of the inner sunshade combined with the cooling system of the wet curtain fan can improve the cooling and moisturizing effect of the wet curtain fan, and at the same time have the advantages of better indoor heat preservation and long service life. But these two kinds of shading methods all fail to make full use of excess sunlight, resulting in the waste of precious solar energy.

Therefore, various types of photovoltaic greenhouses have emerged as the times require. However, in existing photovoltaic greenhouses, whether it is laying opaque or semi-transparent solar panels on the roof of the greenhouse or intermittently arranging solar panels and light-transmitting materials on the roof, it will lead to insufficient light and insufficient light in the greenhouse. Unevenness, which affects the yield and quality of plants, especially in winter and rainy days. In addition, the intermittent arrangement of solar panels on the roof will also cause alternating light and dark shadows in the greenhouse. When the sun moves in the sky, these shadows will also move with it, causing periodic changes in the light intensity of the plants in the greenhouse. The stress response in plants affects the normal growth and development of plants. Therefore, it is necessary to invent a photovoltaic greenhouse that can make solar cells into a sunshade net, which can convert excess solar energy into electrical energy while blocking the light entering the greenhouse, which is a perfect combination of facility agriculture and clean energy technology , which is of great significance for alleviating energy shortage and plant stagnation.

Contents of the invention

In view of this, the purpose of the present invention is to provide a foldable diffuse glass greenhouse photovoltaic sunshade with adjustable illumination, which can automatically retract the photovoltaic film sunshade mechanism according to the change of the illumination environment in the greenhouse, and fine-tune the light transmission of photovoltaic power generation equipment. Area, create an ecological environment suitable for plant growth in the greenhouse, and ensure the reliability of the shading system and the communication circuit inside the greenhouse under harsh weather conditions.

The present invention adopts the following schemes to realize: a photovoltaic sunshade curtain of foldable diffuse glass greenhouse with adjustable illumination, including a central system and a sunshade device arranged in the greenhouse; the central control system includes a main control system connected by wireless node, a sunshade drive node and a plurality of light monitoring nodes, the main control node is used to analyze the collected real-time light intensity data in the greenhouse; the sunshade drive node is connected to the sunshade device to adjust the sunshade in real time The expansion and contraction of the frame in the curtain device; the plurality of light intensity detection nodes are arranged at various positions in the greenhouse to collect the light intensity data in the greenhouse in real time; the sunshade device includes a frame, a folding frame, and a gear motor , the folding frame includes several V-shaped brackets arranged in sequence, and the adjacent V-shaped brackets are connected by a double-link mechanism, and the double-link mechanisms are arranged in pairs on the left and right sides of the V-shaped bracket, and the double-link The mechanism is hinged with the adjacent V-shaped bracket. The first V-shaped bracket is connected to the geared motor through the first connecting rod, and the last V-shaped bracket is connected to the frame through the last connecting rod. One end of the last connecting rod is connected to the frame. The side walls of the V-shaped bracket are hinged, and the other end is fixedly connected with the frame. A rack is arranged horizontally under the V-shaped bracket, and the rack is fixed on the frame. The deceleration motor can drive the V-shaped bracket to move back and forth along the rack. The V-shaped bracket is composed of two bracket bodies whose upper ends are hinged. Each bracket body on the V-shaped bracket is equipped with a plate body. For the thin film solar battery panels, light-transmitting regions are arranged between adjacent thin film solar battery panels.

Further, the main control node includes a main controller and an LCD display module connected to it, a keyboard module, a NRF905 wireless module, and an early warning module; the LCD display module, the main controller, and the NRF905 wireless module are all connected to the A power supply module is connected; the NRF905 wireless module is used to receive the real-time light intensity data sent by each light monitoring node and send the driving signal generated by the main controller to the sunshade driving node; the main controller is a C8051F020 microprocessor The device is used to generate a driving signal for controlling the sunshade device according to the received real-time light intensity data; the LCD display module is used to display the real-time light intensity data; the early warning module includes an indicator light and a buzzer for Carry out early warning of accidents.

Further, each of the light intensity detection nodes includes an illumination sensor, a signal preprocessing module, a monitoring controller and a NRF905 wireless module, and the illumination sensor, signal preprocessing module, monitoring controller and NRF905 wireless The modules are all connected to a power supply module; the output end of the light sensor is connected to the input end of the signal preprocessing module, the light sensor is used to collect the light intensity data in the greenhouse in real time, and the signal preprocessing module is used to A/D conversion is performed on the light intensity data; the output end of the signal preprocessing module is connected to the input end of the monitoring controller, the output end of the monitoring controller is connected to the NRF905 wireless module, and the The NRF905 wireless module is used to send the collected real-time light intensity data; wherein, the monitoring controller is a C8051F330 single-chip microcontroller.

Further, the plurality of illumination monitoring nodes are all connected through the NRF905 wireless module, interconnected through the NRF905 wireless network, and connected to the wireless gateway, so that the networking of the illumination monitoring nodes in the greenhouse is more convenient, and there is no need to lay a large number of cables during construction. The engineering is minimally affected by the plants and equipment in the greenhouse.

In particular, the plurality of illumination monitoring nodes communicate with the main control node to provide them with light intensity data in the greenhouse. The main control node can obtain light intensity data at various locations in the greenhouse and respond to changes in illumination in a timely manner. In addition, the wireless communication system of the main control node, sunshade driving node and multiple lighting monitoring nodes is based on the NRF905 wireless network, and the lighting monitoring nodes are interconnected with NRF905 wireless network nodes to form a star topology network structure, and realize mesh in the greenhouse. Network communication, which effectively improves the reliability of the communication system. Even if a lighting monitoring node fails to communicate, other lighting monitoring nodes in the greenhouse can still communicate as communication nodes, and the detection data and control instructions are automatically selected and available in a dynamic routing mode. The data transmission route is transmitted, so that the data communication will not be interrupted, and the light adjustment function of the greenhouse will not be affected.

Further, the sunshade drive node includes a drive controller, a drive module and a NRF905 wireless module, the input end of the drive controller is connected to the NRF905 wireless module, and the output end of the drive controller is connected to the NRF905 wireless module through the The drive module is connected to the sunshade device; the drive controller, drive module, NRF905 wireless module and the uniform power module of the sunshade device are connected, and the NRF905 wireless module is connected to the NRF905 wireless module in the main control node through wireless Network connection for receiving drive signals.

Further, the power module is a thin-film solar panel in a sunshade device.

In particular, the main control node in the central control system is based on an embedded system architecture, and the hardware of the architecture is built with a C8051F020 microprocessor. When the central control system is started, each light monitoring node collects the light intensity in the greenhouse in real time The main control node performs analysis and processing. When the indoor light exceeds the light required for plant growth, the sunshade device is turned on, the folded photovoltaic film panel is stretched horizontally, and the light intensity in the greenhouse under the shade of the sunshade is collected again. According to the required light intensity, adjust the open area of the photovoltaic film sunshade. When the system is working, the LCD display module in the main control node displays the system working state parameters and environmental data such as indoor light intensity in real time, and sets the upper and lower limits of the parameters through the key module, and functions such as buzzer alarm are started when the value is exceeded.

Further, guide rails are arranged horizontally on the left and right sides of the V-shaped bracket, and the guide rails are fixed on the frame. Moving wheels are arranged on the left and right sides of the V-shaped bracket, and the moving wheels are arranged in chutes in the guide rails.

Further, the bracket bodies are connected by a butterfly hinge; the double linkage mechanism is composed of two connecting rods with one ends hinged to each other.

Further, the thin-film solar cell panels are arranged horizontally and evenly spaced from left to right, and the thin-film solar cell panels are photovoltaic thin-film panels.

Further, the light-transmitting area is provided with diffusing glass. After sunlight penetrates the diffusing glass, it diffuses into the greenhouse and irradiates a large area in the greenhouse to create diffuse and uniform lighting conditions in the greenhouse. When the photovoltaic modules in the greenhouse are partially or fully turned on, the light diffused from the roof diffuser glass can be projected onto the projection surfaces of the opaque photovoltaic modules after passing through the gaps between the photovoltaic modules, making these in an impervious Photovoltaic modules in the light state are not easy to form shadows in the greenhouse. In addition, the light diffused from the roof diffuser glass can also be directed to the photovoltaic thin film panels on the photovoltaic modules, ensuring that the photovoltaic thin film panels on the photovoltaic modules can efficiently generate photovoltaic power. It can be seen that the diffuser glass can diffuse the penetrating light to expand the irradiation area, and the cost is low, and it is easy to construct in a large area. By using the diffuser glass in a large area, the beneficial effect of anti-shadow can be achieved at a low cost.

In the present invention, the use method of the foldable diffuse glass greenhouse photovoltaic sunshade with adjustable illumination is as follows: when the greenhouse starts to work, the foldable photovoltaic film sunshade in the greenhouse is completely folded, without any sunshade Function, the main control node of the central control system issues instructions, and each light monitoring node arranged in the greenhouse collects the real-time light intensity in the room at a certain sampling frequency, and the main controller of the main control node obtains the light detected by each light monitoring node at a certain time interval. Intensity data, compared with the light intensity and illuminance value required for normal work in the greenhouse to determine whether the current light intensity in the greenhouse is within the specified range, if the detected light intensity data exceeds 1.2 times the light intensity and illuminance required for normal work in the greenhouse, the main The controller believes that the light intensity exceeds the standard at this time, and it is necessary to reduce the light intensity in the greenhouse to 0.9 times the light intensity required for normal work. The main controller sends instructions to the folding photovoltaic film sunshade mechanism, drives the geared motor to drive the sunshade mechanism to stretch horizontally, and the sunshade mechanism The initial light-transmitting area of the overlying photovoltaic thin film plate is in a partially open state. The main controller sends out instructions again to collect light intensity data in the greenhouse under the sun visor again, fine-tune the light transmission area on the photovoltaic film sun visor according to the current light intensity value, and adjust the indoor light intensity environment most suitable for plant growth. When the indoor light intensity value is close to the pre-designed lower limit value, the main controller sends an instruction to drive the geared motor to drive the sunshade mechanism to retract horizontally, and adjust the light transmission area on the photovoltaic film sunshade until the greenhouse returns to normal work. light intensity. During the working process of the system, through the LCD display module, the current indoor light intensity, temperature, humidity and other environmental parameters and system working status parameters are displayed in real time. Adapt to light conditions for plant growth.

Compared with the prior art, the present invention has the following advantages:

1. The sunshade device covered with photovoltaic thin film panels in the present invention has the functions of sunshade cooling and indoor heat preservation in winter and night, and at the same time, through solar cells, using the principle of photovoltaic power generation, the excess solar radiation for plant growth is converted into electrical energy , for the use of internal equipment in the greenhouse, economical and energy-saving, especially suitable for the climate conditions of high temperature, high humidity and sufficient sunlight in the south.

2. The central control system in the present invention adjusts the sun-shading and light-transmitting areas through driving signals, which enables the light-transmitting areas of photovoltaic modules to be adjusted according to signal instructions, and dynamically realizes the light-transmitting and opaque areas on the inner sunshade device The different proportions of the greenhouse, and because the opaque area is not easy to form shadows in the greenhouse, the greenhouse can timely and dynamically change the lighting environment in the greenhouse according to its location and the different plants, so as to improve the self-adaptive ability of the greenhouse and improve the quality of the greenhouse. crop yield and quality.

3. The central control system described in the present invention adopts the wireless networking capability of the NRF905 wireless module and the control capability of the single-chip microcomputer as the core of the entire system hardware architecture design, and sets complete functions such as keyboard debugging, LCD display and buzzer alarm, and the system architecture is simple , High efficiency, stable system data transmission, the setting position is not limited by the cable, wide coverage, good practical and promotional value.

Description of drawings

Fig. 1 is a functional block diagram of the present invention.

Fig. 2 is a schematic flow chart of the method of the central control system of the present invention.

Figure 3 is a schematic diagram of the greenhouse.

Fig. 4 is the structural representation of sunshade device of the present invention;

Fig. 5 is a schematic diagram of the unfolded state of the V-shaped bracket in the sunshade device;

Fig. 6 is a schematic structural view of the plate body in the sunshade device.

In the picture:

A-sun-facing side; B-back-sun side; C-drawing sunshade device; 1-frame; 2-last connecting rod; 3-V-shaped bracket; 301-bracket body; Link mechanism; 5-moving wheel; 6-guide rail; 7-rack; 8-gear; 9-first connecting rod; 10-reduction motor; .

detailed description

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

This embodiment provides a photovoltaic sunshade curtain for a foldable diffuse glass greenhouse with adjustable illumination, as shown in Figures 1 to 6, including a central system and a sunshade device arranged in the greenhouse; the central control system includes: A main control node, a sunshade driving node and a plurality of light monitoring nodes connected wirelessly, the main control node is used to analyze the collected real-time light intensity data in the greenhouse; the sunshade driving node is connected with the sunshade device , for real-time adjustment of the expansion and contraction of the frame in the sunshade device; the plurality of light intensity detection nodes are arranged at various positions in the greenhouse for real-time collection of light intensity data in the greenhouse; the sunshade device includes a frame 1. Folding frame and geared motor 10. The folding frame includes several V-shaped brackets 3 arranged in sequence, and the adjacent V-shaped brackets 3 are connected by a double-linkage mechanism 4, and the double-linkage mechanisms 4 are in pairs. Set on the left and right sides of the V-shaped bracket 3, the double linkage mechanism 4 is hinged with the adjacent V-shaped bracket 3, the V-shaped bracket 3 at the first position is connected with the reduction motor 10 through the first connecting rod 9, and the V-shaped bracket at the last position The bracket 3 is connected with the frame 1 through the last connecting rod 2, one end of the last connecting rod 2 is hinged with the side wall of the V-shaped bracket 3, and the other end is fixedly connected with the frame 1, and a rack is horizontally arranged under the V-shaped bracket 3 7. The rack 7 is fixed on the rack 1, and the output shaft of the reduction motor 10 is provided with a gear 8 meshing with the rack 7. The reduction motor 10 can drive the V-shaped bracket 3 to move back and forth along the rack 7, and the V-shaped bracket 3 is composed of two support bodies 301 whose upper ends are hinged. Each support body 301 on the V-shaped support 3 is provided with a plate body 11, and a number of thin-film solar panels 1101 are evenly distributed on the plate body 11. The adjacent film A light-transmitting area 1102 is arranged between the solar panels 1101. When the reduction motor moves forward, the moving wheel 4 of the first V-shaped bracket 3 is driven to move on the guide rail 6 through the engagement of the gear 8 and the rack 7. When the first position After the V-shaped bracket 3 is completely expanded horizontally, the first double-linkage mechanism 4 gradually extends horizontally, and pulls the next V-shaped bracket 3 to expand, so that the V-shaped brackets 3 are unfolded in sequence. Similarly, when the geared motor reverses When moving in the direction, each V-shaped bracket is driven to shrink in turn.

In this embodiment, the main control node includes a main controller and an LCD display module connected to it, a keyboard module, an NRF905 wireless module, and an early warning module; the LCD display module, the main controller, and the NRF905 wireless The modules are all connected to a power module; the NRF905 wireless module is used to receive the real-time light intensity data sent by each light monitoring node and send the driving signal generated by the main controller to the sunshade driving node; the main controller is C8051F020 microprocessor, in order to generate and control the driving signal of the sunshade device according to the received real-time light intensity data; the LCD display module is used to display the real-time light intensity data; the early warning module includes an indicator light and a buzzer , for accident warning.

In this embodiment, each of the light intensity detection nodes includes an illumination sensor, a signal preprocessing module, a monitoring controller and an NRF905 wireless module, and the illumination sensor, signal preprocessing module, monitoring controller And the NRF905 wireless module is all connected with a power supply module; The output end of described illumination sensor is connected with the input end of described signal preprocessing module, and described illumination sensor is used for collecting the light intensity data in the greenhouse in real time, and described signal preprocessing The module is used to perform A/D conversion on the light intensity data; the output end of the signal preprocessing module is connected to the input end of the monitoring controller, and the output end of the monitoring controller is connected to the NRF905 wireless module , the NRF905 wireless module is used to send the collected real-time light intensity data; wherein, the monitoring controller is a C8051F330 single-chip microcontroller.

In this embodiment, the plurality of illumination monitoring nodes are all connected through the NRF905 wireless module, interconnected through the NRF905 wireless network, and connected to the wireless gateway, so that the networking of the illumination monitoring nodes in the greenhouse is more convenient, and construction does not require a large number of Laying cables, the project is less affected by the plants and equipment in the greenhouse.

In particular, the plurality of illumination monitoring nodes communicate with the main control node to provide them with light intensity data in the greenhouse. The main control node can obtain light intensity data at various locations in the greenhouse and respond to changes in illumination in a timely manner. In addition, the wireless communication system of the main control node, sunshade driving node and multiple lighting monitoring nodes is based on the NRF905 wireless network, and the lighting monitoring nodes are interconnected with NRF905 wireless network nodes to form a star topology network structure, and realize mesh in the greenhouse. Network communication, which effectively improves the reliability of the communication system. Even if a lighting monitoring node fails to communicate, other lighting monitoring nodes in the greenhouse can still communicate as communication nodes, and the detection data and control instructions are automatically selected and available in a dynamic routing mode. The data transmission route is transmitted, so that the data communication will not be interrupted, and the light adjustment function of the greenhouse will not be affected.

In this embodiment, the sunshade drive node includes a drive controller, a drive module and a NRF905 wireless module, the input end of the drive controller is connected to the NRF905 wireless module, and the output of the drive controller The terminal is connected to the sunshade device through the drive module; the drive controller, the drive module, the NRF905 wireless module and the uniform power module of the sunshade device are connected, and the NRF905 wireless module is wirelessly connected to the NRF905 in the main control node The modules are connected through a wireless network to receive driving signals.

In this embodiment, guide rails 6 are arranged horizontally on the left and right sides of the V-shaped bracket 3, and the guide rails 6 are fixed on the frame 1. Moving wheels 5 are arranged on the left and right sides of the V-shaped bracket 3, and the moving wheels 5 are arranged on the guide rails 6. inside the chute.

In this embodiment, the bracket body 301 is connected by a butterfly hinge 302; the double linkage mechanism 4 is composed of two connecting rods with one ends hinged to each other.

In this embodiment, the thin film solar cell panels 1101 are arranged horizontally and evenly spaced from left to right, and the thin film solar cell panels 1101 are photovoltaic thin film panels.

In this embodiment, the light-transmitting area 1102 is provided with diffusing glass, so that direct sunlight from the roof of the greenhouse is transmitted through the diffusing glass, so that it is difficult to form shadows in the greenhouse. An anti-reflection coating can be coated on the lower surface of the diffuser glass to increase the light intensity transmitted into the greenhouse. After the sunlight penetrates the diffused glass, it enters the greenhouse in a diffuse manner and irradiates a large area in the greenhouse to create diffuse and uniform lighting conditions in the greenhouse. When the photovoltaic modules in the greenhouse are partially or fully turned on, the light diffused from the roof diffuser glass can be projected onto the projection surfaces of the opaque photovoltaic modules after passing through the gaps between the photovoltaic modules, making these in an impervious Photovoltaic modules in the light state are not easy to form shadows in the greenhouse. In addition, the light diffused from the roof diffuser glass can also be directed to the photovoltaic thin film panels on the photovoltaic modules, ensuring that the photovoltaic thin film panels on the photovoltaic modules can efficiently generate photovoltaic power. It can be seen that the diffuser glass can diffuse the penetrating light to expand the irradiation area, and the cost is low, and it is easy to construct in a large area. By using the diffuser glass in a large area, the beneficial effect of anti-shadow can be achieved at a lower cost.

In this embodiment, when the sunshade device is in use, diffuse glass is covered on the sunny side A and the back side B of the roof, so that sunlight can be evenly distributed when it is irradiated in the greenhouse, and the device is arranged below the sunny side A. , when the reduction motor is working, the first V-shaped support 3 is driven by the rack and pinion transmission reduction motor to start telescopic movement, so as to achieve the effect of adjusting the light transmission area. When the light intensity is greater than the light intensity of photosynthesis required by plants, the geared motor 10 is allowed to rotate forward, the geared motor 10 unfolds the V-shaped support 3, and the excess sunlight energy is converted into electrical energy by using the thin film solar panel 1101 attached thereto , when the light intensity is weak, the geared motor 10 is reversed, and the geared motor 10 packs the V-shaped support 3 so as to provide enough light energy for the growth of plants.

In this embodiment, the main control node in the central control system is based on an embedded system architecture, and the hardware of the architecture has a built-in C8051F020 microprocessor, which is an embedded system with low power consumption, so that the electric power consumed by the system is very small, When using solar power, it will not affect other devices that need solar power. At the same time, the method flow diagram of the central control system is shown in Figure 2. After the system is started, each light monitoring node collects the light intensity in the greenhouse in real time and then analyzes and processes it through the main control node. When the indoor light exceeds the light intensity required for plant growth At this time, open the sunshade device, stretch the foldable photovoltaic film panel horizontally, and collect the light intensity in the greenhouse under the shade of the sunshade again, and adjust the open area of the photovoltaic film sunshade according to the light intensity required by the plant growth characteristics. When the system is working, the LCD display module in the main control node displays the system working state parameters and environmental data such as indoor light intensity in real time, and sets the upper and lower limits of the parameters through the key module, and functions such as buzzer alarm are started when the value is exceeded.

In this embodiment, the use method of the foldable diffuse glass greenhouse photovoltaic sunshade with adjustable illumination is as follows: when the greenhouse starts to work, the foldable photovoltaic film sunshade in the greenhouse is completely folded, without any damage. For sunshade function, the main control node of the central control system issues instructions, and each light monitoring node arranged in the greenhouse collects indoor real-time light intensity at a certain sampling frequency, and the main controller of the main control node obtains the light intensity detected by each light monitoring node at a certain time interval. The light intensity data is compared with the light intensity and illuminance value required for the normal operation of the greenhouse to determine whether the current light intensity in the greenhouse is within the specified range. If the detected light intensity data exceeds 1.2 times the light intensity and illuminance required for the normal operation of the greenhouse, then The main controller believes that the light intensity exceeds the standard at this time, and it is necessary to reduce the light intensity in the greenhouse to 0.9 times the light intensity required for normal work. The main controller sends instructions to the folding photovoltaic film sunshade mechanism, drives the geared motor to drive the sunshade mechanism to stretch horizontally, and shades the sun. The initial light-transmitting area of the photovoltaic film plate covered on the mechanism is partially open. The main controller sends out instructions again to collect light intensity data in the greenhouse under the sun visor again, fine-tune the light transmission area on the photovoltaic film sun visor according to the current light intensity value, and adjust the indoor light intensity environment most suitable for plant growth. When the indoor light intensity value is close to the pre-designed lower limit value, the main controller sends an instruction to drive the geared motor to drive the sunshade mechanism to retract horizontally, and adjust the light transmission area on the photovoltaic film sunshade until the greenhouse returns to normal work. light intensity. During the working process of the system, through the LCD display module, the current indoor light intensity, temperature, humidity and other environmental parameters and system working status parameters are displayed in real time. Adapt to light conditions for plant growth.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (10)

1. A photovoltaic sunshade for folding diffused glass greenhouse with adjustable illumination, characterized in that: it includes a central control system and a sunshade device arranged in the greenhouse; the central control system includes a master control node connected wirelessly , a sunshade drive node and a plurality of illumination monitoring nodes, the main control node is used to analyze the collected real-time light intensity data in the greenhouse; the sunshade drive node is connected to the sunshade device for real-time adjustment of the sunshade The expansion and contraction of the frame in the device; the plurality of light intensity detection nodes are arranged at various positions in the greenhouse to collect the light intensity data in the greenhouse in real time; the sunshade device includes a frame, a folding frame, and a gear motor, The folding frame includes several V-shaped brackets arranged in sequence, and the adjacent V-shaped brackets are connected by a double-linkage mechanism. The double-linkage mechanisms are arranged in pairs on the left and right sides of the V-shaped brackets. Hinged with the adjacent V-shaped bracket, the V-shaped bracket at the first position is connected to the geared motor through the first connecting rod, the V-shaped bracket at the last position is connected to the frame through the last connecting rod, and one end of the last connecting rod is connected to the V The side walls of the V-shaped bracket are hinged, and the other end is fixedly connected with the frame. A rack is arranged horizontally under the V-shaped bracket, and the rack is fixed on the frame. The motor can drive the V-shaped bracket to move back and forth along the rack. The V-shaped bracket is composed of two bracket bodies whose upper ends are hinged. Each bracket body on the V-shaped bracket is equipped with a plate body, and several films are evenly distributed on the plate body. In the solar battery panel, a light-transmitting area is arranged between adjacent thin-film solar battery panels. 2. A kind of illumination-adjustable foldable diffusing glass greenhouse photovoltaic sunshade according to claim 1, characterized in that: the main control node includes a main controller and an LCD display module connected to it, a keyboard modules, a NRF905 wireless module, and an early warning module; the LCD display module, the main controller, and the NRF905 wireless module are all connected to a power module; the NRF905 wireless module is used to receive the real-time light intensity data sent by each light monitoring node and Send the driving signal generated by the main controller to the sunshade driving node; the main controller is a C8051F020 microprocessor, which is used to generate a driving signal for controlling the sunshade device according to the received real-time light intensity data; The LCD display module is used to display real-time light intensity data; the early warning module includes an indicator light and a buzzer for early warning of accidents. 3. A kind of illumination-adjustable foldable diffuser glass greenhouse photovoltaic sunshade curtain according to claim 1, characterized in that: each of the described light intensity detection nodes comprises an illumination sensor, a signal preprocessing module, A monitoring controller and a NRF905 wireless module, the light sensor, the signal preprocessing module, the monitoring controller and the NRF905 wireless module are all connected to a power supply module; the output of the light sensor is connected to the input of the signal preprocessing module The light sensor is used to collect the light intensity data in the greenhouse in real time, and the signal preprocessing module is used to perform A/D conversion on the light intensity data; the output terminal of the signal preprocessing module is connected to the The input end of monitoring controller is connected, and the output end of described monitoring controller is connected with described NRF905 wireless module, and described NRF905 wireless module is in order to send the real-time light intensity data that gathers; Wherein, described monitoring controller is C8051F330 single chip microcontroller. 4. A foldable diffuser glass greenhouse photovoltaic sunshade with adjustable illumination according to claim 1, characterized in that: the plurality of illumination monitoring nodes are connected through NRF905 wireless modules. 5. A kind of illumination-adjustable folding diffuser glass greenhouse photovoltaic sunshade curtain according to claim 1, characterized in that: the sunshade drive node includes a drive controller, a drive module and a NRF905 wireless module, the The input end of the drive controller is connected with the NRF905 wireless module, and the output end of the drive controller is connected with the sunshade device through the drive module; the drive controller, drive module, NRF905 wireless module and The sunshade device is connected to a power module, and the NRF905 wireless module is connected to the NRF905 wireless module in the main control node through a wireless network to receive driving signals. 6 . A photovoltaic sunshade for folding diffused glass greenhouse with adjustable illumination according to claim 2 , 3 or 5 , characterized in that: the power module is a thin-film solar panel in the sunshade device. 7. A foldable diffuser glass greenhouse photovoltaic sunshade with adjustable illumination according to claim 1, characterized in that: guide rails are horizontally arranged on the left and right sides of the V-shaped support, and the guide rails are fixed on the frame, and the V The left and right sides of the type bracket are provided with moving wheels, and the moving wheels are arranged in the chute in the guide rail. 8. A photovoltaic sunshade of foldable diffused glass greenhouse with adjustable illumination according to claim 1, characterized in that: the support body is connected by a butterfly hinge; Hinged connecting rods. 9. A foldable diffuser glass greenhouse photovoltaic sunshade with adjustable illumination according to claim 1, characterized in that: the thin-film solar panels are arranged horizontally and evenly spaced from left to right, and the thin-film solar panels Solar panels are photovoltaic thin film panels. 10. A photovoltaic sunshade with foldable diffused glass greenhouse with adjustable illumination according to claim 1, characterized in that: said light-transmitting area is provided with diffused glass.