A greenhouse roof system and control method thereof

Abstract

The present invention discloses a greenhouse roof system and a control method thereof. The greenhouse roof system according to an embodiment of the present invention comprises: a first roof, located on the greenhouse; a first valve, arranged on the first roof; a second roof, located above the first roof; a second valve, arranged on the second roof; a first cavity, located between the first roof and the second roof, for containing and exchanging gases; a control device, respectively connected to the first valve and the second valve, the control device acquires environmental information inside and outside the greenhouse, and controls the opening and closing of the first valve and / or the second valve according to the environmental information, wherein the first valve controls the connection or isolation between the greenhouse and the first cavity; the second valve controls the connection or isolation between the first cavity and the outside world. The greenhouse roof system and the control method according to an embodiment of the present invention can reduce the energy consumption of greenhouse environment operation and reduce the labor intensity of greenhouse production management.

Description

Technical Field

[0001] The present invention relates to the technical field of facility agriculture structural engineering, and in particular to a greenhouse roof system and a control method thereof. Background Art

[0002] In recent years, the facility agriculture industry has developed rapidly. Compared with open-field cultivation, the most important advantage of greenhouse production is the controllable indoor environment, which can provide suitable temperature, humidity and other conditions for crops to achieve high yield and high efficiency.

[0003] In the existing technology, in order to maintain a stable indoor environment and normal production operations, there are problems such as high greenhouse heating costs, difficult cleaning of roof covering materials, and difficulty in removing snow from the roof on snowy days, which restrict the effectiveness of increasing production and income.

[0004] Therefore, it is hoped that there will be a new greenhouse roof system and control method thereof that can solve the above problems. Summary of the invention

[0005] In view of the above problems, an object of the present invention is to provide a greenhouse roof system and a control method thereof, so as to reduce the energy consumption of greenhouse environment operation and reduce the labor intensity of greenhouse production management.

[0006] According to one aspect of the present invention, there is provided a greenhouse roof system, comprising a first roof located on a greenhouse; a first valve arranged on the first roof; a second roof located above the first roof; a second valve arranged on the second roof; a first cavity located between the first roof and the second roof and used for accommodating and exchanging gases; an air pump used for ventilating the first cavity; and a control device connected to the first valve and the second valve respectively, the control device acquiring environmental information inside and outside the greenhouse, and controlling the opening and closing of the first valve and / or the second valve according to the environmental information; the control device being connected to the air pump to control the opening or closing of the air pump, wherein the first valve controls the connection or isolation between the greenhouse and the first cavity; and the second valve controls the connection or isolation between the first cavity and the outside world.

[0007] Preferably, the material of the first roof is a hard covering material, including at least one selected from glass and PC board.

[0008] Preferably, the material of the first roof is a high-strength film.

[0009] Preferably, the second roof comprises a soft plastic film.

[0010] Preferably, the second roof is arranged above the first roof; the first roof and / or the second roof are sealed on all sides.

[0011] Preferably, the greenhouse roof system also includes: a cleaning and film-smoothing scraper, arranged in the first cavity, for cleaning the first roof and smoothing (film) the second roof; and an atomizing nozzle, arranged in the first cavity, for humidifying and cooling the first cavity.

[0012] Preferably, the greenhouse roof system also includes: a roof fixing profile, located in the first cavity; a roller motor, arranged on the roof fixing profile; and a scraper dragging wire, respectively connected to the cleaning and film-care scraper and the roller motor, and horizontally passing through the roof; the scraper dragging wire forms a dragging wire reel at one end of the roller motor, wherein the roller motor drives the cleaning and film-care scraper to and fro horizontally by dragging the scraper dragging wire.

[0013] Preferably, the greenhouse roof system also includes: a heating device for providing hot air to the first cavity; the air pump includes: a first air pump connected to the first valve, used for gas exchange between the gas in the greenhouse and the gas in the first cavity; a second air pump connected to the second valve, used for gas exchange between the gas outside the greenhouse and the gas in the first cavity, wherein the control device simultaneously controls the first valve, the second valve and the air pump.

[0014] Preferably, the greenhouse roof system also includes: a pressure gauge for detecting the pressure in the first cavity; and / or a pressure relief valve connected to the first cavity and relieving pressure when the pressure in the first cavity is greater than a set threshold of the pressure relief valve.

[0015] Preferably, the control device comprises: an information collection unit for collecting the environmental information, wherein the environmental information comprises at least one selected from the group consisting of temperature inside the greenhouse, humidity inside the greenhouse, temperature outside the greenhouse, humidity outside the greenhouse, wind speed outside the greenhouse and rainfall information.

[0016] Preferably, the control device further comprises: a system controller, connected to the information acquisition unit to obtain the environmental information, and obtain control instructions according to the environmental information, wherein the control instructions are used to control the greenhouse roof system.

[0017] According to another aspect of the present invention, a control method for a greenhouse roof system is provided, comprising acquiring environmental information inside and outside the greenhouse; obtaining control information according to preset target environmental parameters and the environmental information inside and outside the greenhouse; and adjusting the greenhouse roof system according to the control information, thereby adjusting the greenhouse environment.

[0018] The greenhouse roof system and control method according to the embodiments of the present invention achieve energy saving and consumption reduction by changing the greenhouse roof system structure and the refined intelligent control method of the roof, which can reduce the energy consumption of greenhouse environment operation, solve bottleneck problems such as greenhouse roof cleaning and snow removal, and reduce the labor intensity of manual roof cleaning and snow removal.

[0019] According to the greenhouse roof system and control method thereof of the embodiment of the present invention, a first cavity for accommodating and exchanging gas is provided on the greenhouse roof, which can control the exchange of air inside the greenhouse or outside the greenhouse in the first cavity according to indoor and outdoor environmental conditions, thereby realizing intelligent operation control of the greenhouse.

[0020] According to the greenhouse roof system and control method of the embodiments of the present invention, a cleaning and film-care scraper for cleaning and collecting the roof, an atomizing nozzle for humidifying and cooling the first cavity, etc. are provided. Intelligent regulation can be performed according to the environment inside and outside the greenhouse to realize heating, dehumidification, and snow removal in winter, cooling, humidification, dehumidification, demisting, transparency enhancement, and wind resistance in summer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0022] Figure 1 A schematic structural diagram of a greenhouse roof system according to Embodiment 1 of the present invention is shown;

[0023] Figure 2 A schematic structural diagram of a greenhouse roof system according to a second embodiment of the present invention is shown;

[0024] Figure 3 A schematic structural diagram of a greenhouse roof system according to Embodiment 3 of the present invention is shown;

[0025] Figure 4 A partial structural schematic diagram of a greenhouse roof system according to a fourth embodiment of the present invention is shown;

[0026] Figure 5 A method flow chart of a control method for a greenhouse roof system according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0027] Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, identical elements are represented by identical or similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale. In addition, some well-known parts may not be shown in the drawings.

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. Many specific details of the present invention, such as the structure, materials, dimensions, processing technology and techniques of the components are described below to provide a clearer understanding of the present invention. However, as those skilled in the art will appreciate, the present invention may be implemented without following these specific details.

[0029] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0030] Figure 1 FIG. 2 shows a schematic structural diagram of a greenhouse roof system according to Embodiment 1 of the present invention. Figure 1 As shown, the greenhouse roof system according to the first embodiment of the present invention includes a first roof 101 , a first valve 102 , a second roof 201 , a second valve 202 , a first cavity 301 , a control device 401 and an air pump 701 .

[0031] Specifically, the greenhouse roof system according to the embodiment of the present invention is a double-layered regulated roof structure.

[0032] The first roof 101 is located on the greenhouse 10. The first roof 101 is, for example, a traditional greenhouse roofing material (hard covering materials such as glass and PC boards), or a high-strength film such as F-Clean (fluororesin film). The first roof 101 is, for example, located on the roof of the greenhouse 10. Optionally, the first roof 101 and / or the second roof 201 are inclined on the greenhouse 10 to facilitate water flow along the inclined surface. Optionally, the first roof 101 and / or the second roof 201 are arranged parallel to the roof of the greenhouse 10. Optionally, the first roof 101 and / or the second roof 201 are arranged horizontally.

[0033] The second roof 201 is located above the first roof 101. The second roof 101 is, for example, a soft sealing membrane. Optionally, the second roof 201 is installed using (sealing) fixings, and the second roof 201 can be frequently replaced by removing the surrounding (sealing) fixings.

[0034] The first cavity 301 is located between the first roof 101 and the second roof 201. The first cavity 301 is used to contain gas. Optionally, the interlayer (air-filled) space between the first roof 101 and the second roof 201 is the first cavity 301.

[0035] A first valve 102 is provided on the first roof 101. The first valve 102 controls the connection or isolation between the greenhouse 10 and the first cavity 301. When the first valve 102 is opened, the internal cavity of the greenhouse 10 is connected to the first cavity 301, and the gas (indoor air) in the greenhouse 10 can be exchanged with the gas in the first cavity (sandwich space) 301. When the first valve 102 is closed, the internal cavity of the greenhouse 10 is isolated (disconnected) from the first cavity 301, and the gas in the greenhouse 10 cannot be exchanged with the gas in the first cavity 301. Preferably, the greenhouse roof system further includes an air pump 701 for ventilation of the first cavity 301. The air pump 701 is connected to the first valve 102, for example, and is arranged in the first cavity 301. When the first valve 102 is opened, the air pump 701 is opened, and the air pump 701 actively guides the gas flow (guides the gas to flow and exchange through the first valve 102), so that the gas in the greenhouse 10 is exchanged with the gas in the first cavity 301. When the first valve 102 is closed, the air pump 701 is turned off. .

[0036] A second valve 202 is provided on the second roof 201. The second valve 202 controls the connection or isolation of the first cavity 301 with the outside world. When the second valve 202 is opened, the first cavity 301 is connected with the outside world, and the gas in the first cavity 301 can be exchanged with the gas in the outside world. When the second valve 202 is closed, the first cavity 301 is isolated from the outside world, and the gas in the first cavity 301 cannot be exchanged with the gas in the outside world. Preferably, the greenhouse roof system also includes an air pump 701 for ventilation of the first cavity 301. The air pump 701 is connected to the second valve 202, for example, it is arranged in the first cavity 301. When the second valve 202 is opened, the air pump 701 is turned on, and the air pump 701 actively guides the gas flow (guides the gas to flow and exchange through the second valve 202), so that the gas outside the greenhouse 10 (the outside world) is exchanged with the gas in the first cavity 301. When the second valve 202 is closed, the air pump 701 is closed.

[0037] When the first valve 102 and the second valve 202 are both opened, the air pump 701 is also opened, and the gas in the greenhouse 10 can be exchanged with the external gas in the first cavity 301 .

[0038] The control device 401 is connected to the first valve 102 and the second valve 202, respectively, and is connected to the air pump 701. The control device 401 obtains environmental information inside and outside the greenhouse 10, and controls the opening and closing of the first valve 102 and / or the second valve 202 and the opening or closing of the air pump 701 according to the environmental information inside and outside the greenhouse 10, so as to realize the exchange of gas in the greenhouse 10 with the outside gas. Optionally, the control device 401 controls the air pump 701, the first valve 102 and the second valve 202 at the same time, and the air pump and the valves act at the same time. The air flow in the outside, the first cavity (roof cavity) and the greenhouse is not passive, but is actively executed by the air pump 701.

[0039] In an optional embodiment of the present invention, the air pump 701 includes a first air pump and a second air pump. The first air pump is connected to the first valve 102, and is used for gas exchange between the gas in the greenhouse 10 and the gas in the first cavity 301; the second air pump is connected to the second valve 202, and is used for gas exchange between the gas outside the greenhouse 10 and the gas in the first cavity 301. Optionally, the control device 401 controls the first valve 102, the second valve 202 and the air pump 701 at the same time. The air pump and the valve operate simultaneously. Optionally, the first air pump is arranged inside the greenhouse 10 and / or in the first cavity 301; the second air pump is arranged outside and / or in the first cavity 301.

[0040] Figure 2 FIG. 2 shows a schematic diagram of the structure of a greenhouse roof system according to Embodiment 2 of the present invention. Figure 2 As shown, the greenhouse roof system according to the second embodiment of the present invention includes a first roof 101, a first valve 102, a second roof 201, a second valve 202, a first cavity 301, a control device 401 (not shown in the figure) and a fixing member 501.

[0041] Specifically, the greenhouse roof system according to the second embodiment of the present invention is applied to a solar greenhouse. The roof is a double-layered regulated roof structure.

[0042] The first roof 101 is located on the solar greenhouse. The first roof 101 is, for example, an F-Clean film (fluorine film). The F-Clean film is stretched to form a plane. The first roof 101 is provided with fixings 501 for installing the upper film. The fixings 501 are, for example, located around the roof.

[0043] The second roof 201 is, for example, a soft sealing film (soft plastic film). The second roof 201 is installed on the fixing member 501, for example, flexibly installed on the lower layer (first roof 101) material frame fixing member to maintain sealing and facilitate replacement.

[0044] There is a first cavity 301 (sandwich air-filled space) between the first roof 101 and the second roof 201. The first roof 101 and the second roof 201 are connected to (different) air pumps through the first valve 102 and the second valve 202, respectively. The control device 401 is connected to the valve and / or the air pump, respectively, and can control the indoor or outdoor air intake and exhaust into the space (first cavity 301) according to the indoor and outdoor environmental conditions.

[0045] In an optional embodiment of the present invention, the greenhouse roof system is a double-layer structure, including a first roof 101 and a second roof 201. The first roof 101 and / or the second roof 201 are fixed around by means of slots, crimping and clamping, etc. to achieve sealing around the perimeter. The first roof 101 and the second roof 201 form a gap of more than 50 mm, for example, through profiles, to achieve mixing and exchange of indoor and outdoor air, and to store other devices, such as cleaning, film-care scrapers and humidification spray bars.

[0046] Figure 3 FIG. 2 shows a schematic diagram of the structure of a greenhouse roof system according to Embodiment 3 of the present invention. Figure 3 As shown, the greenhouse roof system according to the third embodiment of the present invention includes a first roof 101, a first valve 102, a second roof 201 and a second valve 202. Figure 3 As shown, the greenhouse roof system according to the third embodiment of the present invention can be applied to multi-span greenhouses.

[0047] The application scenarios of the greenhouse roof system according to the embodiment of the present invention are not limited to the above embodiment, and can also be applied to working conditions such as large-span plastic greenhouses.

[0048] Figure 4 FIG. 4 shows a partial structural diagram of a greenhouse roof system according to Embodiment 4 of the present invention. Figure 4 As shown, the greenhouse roof system according to the fourth embodiment of the present invention includes a roof fixing profile 600, a cleaning cloth 601, a cleaning film scraper 602, an atomizing nozzle 603, a film guide roller 604, a humidification pipe 605, a roller motor power cord 606, a roller motor 607, a scraper drag wire 608 and a drag wire reel 609.

[0049] Specifically, the roof fixing profile 600 is located in the first cavity 301 (between the first roof 101 and the second roof 201 ). Optionally, the roof fixing profile 600 is reused with the fixing member 501 .

[0050] A roller motor 607 is installed at one end of the roof fixing profile 600 in the horizontal direction, and a guide wheel is installed at the other end. The roller motor 607 is connected to the power supply through the roller motor power line 606. The roller motor 607 is connected to the cleaning film scraper 602 through the scraper drag wire 608. The scraper drag wire 608 runs through the roof horizontally, and forms a drag wire reel 609 at one end of the roller motor 607.

[0051] The cleaning and film-smoothing scraper 602 is fixed on the scraper drag wire 608 and is close to the first roof 101 through a counterweight. A cleaning cloth 601 is provided on the lower surface of the cleaning and film-smoothing scraper 602, and a film-guiding roller 604 is provided on the upper surface. The cleaning and film-smoothing scraper 602 is arranged in the first cavity 301, and is used for cleaning the first roof and film-smoothing the second roof. The roller motor 607 works, and drives the cleaning and film-smoothing scraper 602 to reciprocate horizontally by dragging the scraper drag wire 608, and cleans the first roof 101 through the cleaning cloth 601, and combs and smoothes the second roof 201 (film-smoothing) through the film-guiding roller 604.

[0052] A humidifying pipe 605 is arranged at the lower end above the roof fixing profile 600. The humidifying pipe 605 is connected to a water pump. An atomizing nozzle 603 is arranged on the humidifying pipe 605. The atomizing nozzle 603 is arranged in the first cavity 301 and is used to spray liquid into the first cavity 301. Optionally, the atomizing nozzles 603 are arranged on the humidifying pipe 605 at intervals.

[0053] In an optional embodiment of the present invention, the greenhouse roof system further includes an actuator. The first roof 101 and the second roof 201 are provided with a first valve 102, a second valve 202 and an air pump, which can realize ventilation of the first cavity 301 inside and outside the greenhouse. The indoor air pump can be connected to the heating device through a quick connector to pass (provide) hot air into the first cavity 301. The atomizing nozzle (humidifying nozzle) 603 is arranged in the first cavity 301, which can humidify and cool the first cavity 301. The first valve 102, the second valve 202, the air pump, the atomizing nozzle 603, the water pump, and the roller motor 607 are all connected to the system controller.

[0054] In an optional embodiment of the present invention, the greenhouse roof system further includes an information acquisition unit, a temperature and humidity sensor is arranged in the greenhouse, and a weather station is arranged outside the greenhouse to detect outdoor temperature and humidity, wind speed and rainfall. The parameters detected by the indoor and outdoor sensors are transmitted to the system controller in real time. A barometer is arranged between the first valve 102, the second valve 202 and the air inlet. When air is taken into the first cavity 301, the pressure in the first cavity 301 is continuously detected to automatically realize timely air replenishment. Optionally, the control device 401 includes the above-mentioned information acquisition unit and the system controller.

[0055] In an optional embodiment of the present invention, the greenhouse roof system further comprises a pressure relief valve, which is connected to the first cavity 301. When the pressure in the first cavity 301 is greater than a set threshold of the pressure relief valve, the pressure is relieved through the pressure relief valve.

[0056] In an optional embodiment of the present invention, the greenhouse roof system further includes a system controller. The control device 401, for example, includes a system controller. The system controller issues control instructions to the first valve 102 and / or the second valve 202, the air pump, the atomizing nozzle 603, the water pump, the roller motor 607 and other actuators according to the collected environmental parameters inside and outside the greenhouse, so as to achieve the greenhouse temperature, humidity regulation and windproof snow removal functions. Optionally, when the temperature in the first cavity 301 is lower than the temperature inside the greenhouse, the specific control logic is as follows:

[0057]

[0058]

[0059] Figure 5 A method flow chart of a control method of a greenhouse roof system according to an embodiment of the present invention is shown. Figure 5 As shown, the control method of the greenhouse roof system according to the embodiment of the present invention comprises the following steps:

[0060] In step S501, environmental information inside and outside the greenhouse is obtained;

[0061] Obtain environmental information inside and outside the greenhouse. For example, the (greenhouse roof system) system obtains the temperature, humidity and carbon dioxide concentration inside and outside the greenhouse in real time, and obtains information such as temperature, humidity, wind speed and rainfall parameters outside the greenhouse.

[0062] In an optional embodiment of the present invention, before executing step S501, the system is also initialized and detection is started.

[0063] In step S502, control information is obtained according to preset target environmental parameters and environmental information inside and outside the greenhouse;

[0064] According to the preset target environmental parameters and the environmental information inside and outside the greenhouse, the control information is obtained. For example, the preset target environmental parameters and the environmental parameters inside and outside the greenhouse are compared and judged, the system execution is judged, and the control information corresponding to the system execution is obtained.

[0065] In step S503, the greenhouse roof system is adjusted according to the control information, thereby adjusting the greenhouse environment.

[0066] The greenhouse roof system is adjusted according to the control information, thereby adjusting the greenhouse environment. For example, the system performs corresponding operations according to the control information.

[0067] In an optional embodiment of the present invention, the preset target environmental parameters include, for example: the temperature in the greenhouse is 10° C.-30° C.; the humidity in the greenhouse is 40%-70%; and the carbon dioxide concentration is greater than or equal to 200 ppm.

[0068] If it is winter night and the heat preservation is put away, the environmental information obtained includes that the temperature in the greenhouse is lower than 10°C, then the control information is obtained according to the preset target environmental parameters and the environmental information obtained. Under the control of the control information, the controller starts the heating device to supply heat source to the air pump connected to the first roof 101. At the same time, the air pump connected to the first roof 101 is started, and the first valve 102 is opened to fill the first cavity 301 with hot air, isolating the heat convection inside and outside the greenhouse, and achieving the insulation effect.

[0069] If it is winter daytime and the heat preservation is deployed, the environmental information obtained includes that the temperature in the greenhouse is lower than 10°C, then the control information is obtained according to the preset target environmental parameters and the environmental information obtained. Under the control of the control information, the controller starts the heating device to supply heat source to the air pump connected to the first roof 101. At the same time, the air pump connected to the first roof 101 is started, the first valve 102 is opened, and hot air is filled into the first cavity 301, which is kept warm by the outer heat preservation blanket and has a heating effect on the greenhouse.

[0070] If, at night in winter, the environmental information obtained includes that the humidity in the greenhouse is higher than 60% and the temperature in the first cavity 301 is lower than the temperature in the greenhouse, then the control information is obtained according to the preset target environmental parameters and the environmental information obtained. Under the control of the control information, the controller starts the air pump connected to the first roof 101. The air pump connected to the first roof 101 extracts the humid heat in the greenhouse to the first cavity 301 for condensation and dehumidification, and then circulates and extracts the dry cold air into the greenhouse to reduce the humidity in the greenhouse.

[0071] If, at night in winter, the environmental information obtained includes that the humidity in the greenhouse is higher than 60% and the temperature in the first cavity 301 is higher than the temperature in the greenhouse, then the control information is obtained according to the preset target environmental parameters and the environmental information obtained. Under the control of the control information, the controller starts the air pump connected to the first roof 101 and the air pump connected to the second roof 201. The air pump connected to the first roof 101 extracts the hot and humid air in the greenhouse, and the air pump connected to the second roof 201 extracts the dry and cold air outside. The hot and humid air in the greenhouse and the dry and cold air outside are mixed in the first cavity 301, and then the dry and cold air is circulated and extracted into the greenhouse to reduce the humidity.

[0072] If the acquired environmental information includes snowfall, control information is obtained according to the preset target environmental parameters and the acquired environmental information. Under the control of the control information, the controller starts the heating device to supply heat source to the air pump connected to the first roof 101. At the same time, the air pump connected to the first roof 101 is started, the first valve 102 is opened, and hot air is filled into the first cavity 301 to heat the second roof 201 and melt the snow.

[0073] If in summer, the environmental information obtained includes that the temperature in the greenhouse is higher than 30°C, then the control information is obtained according to the preset target environmental parameters and the environmental information obtained. Under the control of the control information, the controller starts the air pump connected to the first roof 101, and starts the atomizing nozzle water pump (located in the first cavity 301), so that the first cavity 301 is filled with water mist, which directly reduces the roof temperature of the first roof 101. At the same time, the water mist can reduce the penetration of sunlight, play a shading role, and achieve a cooling effect.

[0074] If in summer, the environmental information obtained includes that the humidity in the greenhouse is lower than 40%, then the control information is obtained according to the preset target environmental parameters and the environmental information obtained. Under the control of the control information, the controller starts the air pump connected to the first roof 101 and / or the air pump connected to the second roof 201. The air pump connected to the second roof 201 extracts outdoor hot and dry air into the first cavity 301, and starts the atomizing nozzle water pump to humidify the first cavity 301. When the pressure in the first cavity 301 is saturated, the air pump connected to the first roof 101 is started to pump the humid air in the first cavity 301 into the greenhouse to achieve humidification in the greenhouse.

[0075] The acquired environmental information includes the light transmittance of the first cavity 301, and the control information is obtained according to the preset target environmental parameters and the acquired environmental information. Under the control of the control information, the controller starts the anti-transmission function. For example, when there is insufficient light in the greenhouse or there are impurities such as water mist and moss in the first cavity 301 that reduce the light transmittance of the roof system, the controller starts the scraper drive motor to run back and forth, and the cleaning cloth under the scraper can clean and defog the first roof 101, and the roller on the scraper can smooth the second roof 201 to improve the light transmittance of the roof. Optionally, when manual inspection finds that there is insufficient light in the greenhouse or there are impurities such as water mist and moss in the interlayer inflation space that reduce the light transmittance of the roof, the defogging and anti-transmission function is manually started, and the controller starts the scraper drive motor to run back and forth, and the cleaning cloth under the scraper can clean and defog the first roof 101, and the roller on the scraper can smooth the second roof 201 to improve the light transmittance of the roof.

[0076] If at night, when the thermal quilt (the thermal quilt is located on the second roof 201) is unfolded, the acquired environmental information includes that the wind speed outside the greenhouse exceeds 8m / s, then the control information is obtained according to the preset target environmental parameters and the acquired environmental information. Under the control of the control information, the controller starts the air pump connected to the first roof 101 to expand the first cavity 301. The second roof 201 fits tightly with the unfolded thermal quilt, reducing the external cold wind from entering between the thermal quilt and the second roof 201, preventing the cold wind from lowering the temperature in the greenhouse and protecting the thermal quilt.

[0077] The acquired environmental information includes that the carbon dioxide concentration in the greenhouse is lower than 200ppm, and the control information is obtained according to the preset target environmental parameters and the acquired environmental information. Under the control of the control information, the controller starts the air pump connected to the first roof 101 and the air pump connected to the second roof 201. The air pump connected to the second roof 201 inflates the first cavity 301 from the outside; at the same time, the air pump connected to the first roof 101 is started to discharge the air with a high carbon dioxide concentration outside into the greenhouse, thereby increasing the carbon dioxide concentration in the greenhouse.

[0078] It should be noted that the control method provided in the embodiment of the present invention is not limited to a single control, and multiple environmental information can be obtained at the same time, and multiple control information can be obtained, and the multiple control information can be executed simultaneously or in a certain order.

[0079] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0080] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A greenhouse roof system, characterized in that: include: The first roof is located on the greenhouse; A first valve, disposed on the first roof; A second roof, located above the first roof; a second valve, disposed on the second roof; A first cavity, located between the first roof and the second roof, for containing and exchanging gas; An air pump, used for ventilation of the first cavity; as well as A control device is connected to the first valve and the second valve respectively, the control device obtains environmental information inside and outside the greenhouse, and controls the opening and closing of the first valve and / or the second valve according to the environmental information; the control device is connected to the air pump to control the opening or closing of the air pump, Wherein, the first valve controls the connection or isolation between the greenhouse and the first cavity; The second valve controls the connection or isolation between the first cavity and the outside world; The greenhouse roof system also includes: an atomizing nozzle, disposed in the first cavity, for humidifying and cooling the first cavity; A heating device, used to provide hot air to the first cavity; The first roof and / or the second roof are sealed all around; The greenhouse roof system also includes: A cleaning and film-smoothing scraper is arranged in the first cavity and is used for cleaning the first roof and smoothing the second roof; A roof fixing profile, located in the first cavity; A roller motor is arranged on the roof fixing profile; and The scraper dragging wire is respectively connected to the cleaning and film-care scraper and the roller motor, and horizontally passes through the roof; the scraper dragging wire forms a dragging wire reel at one end of the roller motor, and the roller motor drives the cleaning and film-care scraper to reciprocate horizontally by dragging the scraper dragging wire.

2. The greenhouse roof system according to claim 1, characterized in that: The material of the first roof is a hard covering material, including at least one selected from glass and PC board.

3. The greenhouse roof system according to claim 1, characterized in that: The greenhouse roof system also includes: The air pump comprises: a first air pump connected to the first valve and used for gas exchange between the gas in the greenhouse and the gas in the first cavity; a second air pump connected to the second valve and used for gas exchange between the gas outside the greenhouse and the gas in the first cavity, Wherein, the control device controls the first valve, the second valve and the air pump simultaneously.

4. The greenhouse roof system according to claim 1, characterized in that: The greenhouse roof system also includes: A barometer, used to detect the pressure in the first cavity; and / or The pressure relief valve is connected to the first cavity and releases pressure when the pressure in the first cavity is greater than a set threshold of the pressure relief valve.

5. The greenhouse roof system according to claim 1, characterized in that: The control device comprises: An information collection unit, used to collect the environmental information, The environmental information includes at least one selected from the group consisting of temperature inside the greenhouse, humidity inside the greenhouse, temperature outside the greenhouse, humidity outside the greenhouse, wind speed outside the greenhouse, and rainfall information.

6. The greenhouse roof system according to claim 5, characterized in that: The control device also includes: A system controller is connected to the information acquisition unit to obtain the environmental information and obtain a control instruction according to the environmental information. Wherein, the control instruction is used to control the greenhouse roof system.

7. A control method for a greenhouse roof system, applied to the greenhouse roof system according to any one of claims 1 to 6, characterized in that: The following steps are involved: Obtain environmental information inside and outside the greenhouse; Obtaining control information according to preset target environmental parameters and environmental information inside and outside the greenhouse; as well as The greenhouse roof system is adjusted according to the control information, thereby adjusting the greenhouse environment.

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