An automatic shading system and shading method for doors and windows

Abstract

This invention discloses an automatic sunshade system and method for doors and windows. The system is based on an improvement on the structure of large-sized door or window sashes. The light-transmitting glass of the door or window sash is divided into sections as sub-units. Magnetic-controlled Venetian blinds are then installed in the glass interlayer of each section, and two sets of motors control the magnetic-controlled Venetian blinds. The system uses light intensity sensors located at the corners of the magnetic-controlled Venetian blinds as signal sources to compare with lower and upper light intensity thresholds set on the controller. Based on the comparison results, the controller drives the roller blind motor and the retracting blind motor to control the operation of the magnetic-controlled Venetian blinds. This invention features high control precision, intelligent operation, real-time activation, and stable and reliable performance.

Description

Technical Field

[0001] This invention relates to the field of intelligent door and window technology, specifically to an automatic shading system and method for doors and windows that can adjust the shading effect according to the characteristics of light. Background Technology

[0002] Generally, doors are considered primarily for connecting the interior and exterior spaces and between rooms, while also serving the functions of ventilation, lighting, and passage. Windows, on the other hand, are mainly for lighting, ventilation, and observation. As important components of a building's design, doors and windows, in addition to the aforementioned functionalities, also serve multiple purposes such as decoration, rain and wind protection, insulation, and security. To prevent direct sunlight from entering the building's interior, shading devices are typically installed at doors and windows to achieve a sun-shading effect.

[0003] Existing technologies include intelligent shading devices for window and door structures. These devices, presented as an important part of smart buildings, are mostly driven by DC or AC motors and use infrared or wireless remote control as signal sources to achieve shading requirements. In recent years, shading devices that control the shading system based on outdoor light intensity, wind, and rain have also emerged. However, most existing intelligent shading devices are designed for small-sized windows and doors for residential users. They have low levels of automation, cannot be connected to remote or higher-level devices, and are difficult to centrally control. Furthermore, in modern buildings, especially in mid- to high-rise buildings, the use of large-sized windows and doors is increasing, and many curtain wall-style windows and doors have emerged. While these medium- to large-sized windows and doors also have shading needs—and even higher than traditional window-wall structures—they are designed for smaller, more traditional residential users. When intelligent shading devices are applied to large-size door and window structures, the overall loading and operation of the equipment requires high strength. However, such large-size door and window structures usually span multiple usage areas. Traditional intelligent shading devices are mostly exposed, fully assembled structures, which are difficult to deploy across areas. Furthermore, the fully openable and fully closed method cannot achieve partial opening and closing, and cannot achieve differentiated shading operations according to the orientation of the doors and windows and the different needs of the area. Therefore, the application rate in office buildings and other medium and high-rise buildings is relatively low. In the above scenarios, the main shading method is still to install manual shading curtains on the indoor side of the doors and windows.

[0004] With the development of power electronics and computer technologies, and the current national emphasis on energy conservation, environmental protection, and smart cities, it is necessary to improve existing window and door shading structures and design a highly automated automatic window and door shading system suitable for large-size window and door structures. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide an automatic shading system and method for doors and windows, which can be used to overcome the defects in the above-mentioned technical background.

[0006] The technical problem solved by this invention is achieved by the following technical solution:

[0007] An automatic sunshade system for doors and windows includes an outer frame, which is an external support structure for a door or window sash, and a light-transmitting glass is embedded in the outer frame, which is double-layered tempered glass with interlayer.

[0008] The light-transmitting glass is sealed at the outer edge of the interlayer with a sealing strip. Vertically arranged vertical isolation strips are formed in the interlayer space. The light-transmitting glass is divided into several independent sub-units by the vertical isolation strips. The sub-units are rectangular, and magnetic blinds are formed in the interlayer corresponding to the sub-units. The area of ​​the magnetic blinds corresponds to that of the sub-units.

[0009] The system also includes:

[0010] A roller blind motor for controlling the opening angle of a magnetically controlled Venetian blind and a retracting motor for retracting a leveled magnetically controlled Venetian blind.

[0011] Light intensity sensors are installed on the outer edge of each subunit. There are multiple light intensity sensors, which are arranged in pairs at the same height on both sides of the vertical edge of the subunit. The light intensity sensors on one side are evenly spaced along the height direction of the subunit.

[0012] A controller used to receive position and curtain angle opening signals of magnetically controlled Venetian blinds, as well as light intensity sensor signals, and to perform feedback control on the roller blind motor and curtain retraction motor based on the received signals.

[0013] As a further limitation, the outer frame is an aluminum alloy support frame or a light steel support frame, and the outer edge of the outer frame is attached to the load-bearing structure of the building and is formed as one with the load-bearing structure of the building.

[0014] The preferred structural combination of the building's load-bearing structure is a combination of load-bearing walls, load-bearing columns, load-bearing beams, supports, and floor slabs.

[0015] As a further limitation, the tempered glass is high-transmittance tempered glass, and an anti-ultraviolet coating is formed on its outer surface.

[0016] As a further limitation, the system also includes horizontally arranged horizontal isolation strips, which are staggered with vertical isolation strips, and divide the interlayer of the light-transmitting glass into several independent sub-units arranged in a grid pattern;

[0017] The sealing strip, vertical isolation strip and / or horizontal isolation strip have wire cavities formed in them, and the electrical and signal components in the automatic shading system for doors and windows are wired through the sealing strip and the vertical isolation strip and / or horizontal isolation strip.

[0018] As a further limitation, the light intensity sensor is embedded in the sealing strip and the vertical isolation strip; adjacent sub-units in the horizontal position share the data of the light intensity sensor in the isolation strip on the common side.

[0019] As a further limitation, the roller blind motor and the curtain retraction motor are micro motors, encapsulated in the interlayer space of the outer edge of the magnetically controlled Venetian blind.

[0020] As a further limitation, the controller has a built-in remote communication module, which is one or a combination of Bluetooth, WIFI, and 4G / 5G networks.

[0021] The present invention also provides an automatic shading method, which utilizes the above-mentioned automatic shading system for doors and windows for intelligent automatic shading, and specifically includes the following operation steps:

[0022] S1 uses the controller to set the lower and upper threshold values ​​of the light intensity;

[0023] S2 uses a single sub-unit as an independent working unit within the light-transmitting glass. It collects real-time light intensity data using a light intensity sensor and compares it with the lower and upper threshold values ​​collected in step S1. Based on the comparison results, it drives the roller blind motor and the retracting blind motor through the controller to control the operation of the magnetic venetian blind.

[0024] First, compare the light intensity values ​​of the two light intensity sensors at the bottom of the sub-unit:

[0025] If the real-time light data obtained from both light intensity sensors is less than the lower threshold, the shutter motor will flatten the slats of the magnetic Venetian blind, and the shutter retraction motor will retract the flattened slats upward to the set height position of the previous light intensity sensor.

[0026] If the real-time light data obtained from both light intensity sensors are greater than the upper limit threshold, the curtain motor will lower the flattened curtain slats to the set height position of the next light intensity sensor, and the roller blind motor will close the curtain slats of the magnetic control Venetian blind to provide shading.

[0027] If one of the light intensity sensors on both sides obtains real-time light data that falls between the lower and upper thresholds, then the real-time time and the position of the corresponding light intensity sensor are determined:

[0028] If the real-time time is before noon, check if the light intensity sensor is on the east side. If it is, control the opening height of the magnetic blinds through the light intensity sensor. When the magnetic blinds are half-open or fully open, control the opening angle of the blinds through the light intensity sensor. If not, do the opposite.

[0029] If the real-time time is after 12 noon, check if the light intensity sensor is on the west side. If it is, control the opening height of the magnetic blinds through the light intensity sensor. When the magnetic blinds are half open or fully open, control the opening angle of the blinds through the light intensity sensor. If not, do the opposite.

[0030] When the opening height of the magnetically controlled Venetian blind is controlled by a light intensity sensor:

[0031] If the real-time illumination data obtained by the light intensity sensor is less than the lower threshold, the magnetically controlled Venetian blind will retract to the set height position of the previous light intensity sensor.

[0032] If the real-time illumination data obtained by the illumination intensity sensor is greater than the upper limit threshold, the magnetically controlled venetian blind will be lowered to the set height position of the next illumination intensity sensor.

[0033] If the real-time illumination data obtained by the illumination intensity sensor is between the lower threshold and the upper threshold, the magnetically controlled venetian blind will be lowered to the middle position between the current illumination intensity sensor and the next illumination intensity sensor.

[0034] When controlling the opening angle of the magnetic Venetian blind using a light intensity sensor:

[0035] The corresponding opening ratio of the magnetically controlled Venetian blinds:

[0036]

[0037] Where m is the upper threshold, n is the lower threshold, and x is the real-time measurement value of the light intensity sensor; when a is closer to 0, it means that the magnetic blind is closer to the closed state, and when a is closer to 1, it means that the magnetic blind is closer to the fully open state.

[0038] S3 sequentially processes the positions of all light intensity sensors within the sub-unit of the magnetically controlled Venetian blinds from bottom to top, and performs step S2 again after a set time interval to update the state of the magnetically controlled Venetian blinds.

[0039] Beneficial effects: The automatic shading system for doors and windows of the present invention is suitable for intelligent shading of large doors and windows, making it different from traditional doors and windows. It divides large doors and windows into sections and then performs intelligent automatic shading operation according to the actual light conditions of each section, which can effectively improve the shading effect. At the same time, the magnetically controlled venetian blinds encapsulated in the interlayer are not easily disturbed by external factors and have better stability.

[0040] The automatic shading method corresponding to this automatic shading system for doors and windows uses outdoor light intensity as the main control parameter. After comprehensive judgment of multiple parameters, the optimal control mode is obtained to control the magnetic Venetian blinds, including the lifting position of the magnetic Venetian blinds and the flip angle of the slats, thereby achieving the purposes of shading, heating, and ventilation. This adapts to different weather and seasons as well as day and night needs, enabling the shading device to truly realize the autonomous adjustment function of the building's skin, adapting to the special environmental requirements of different groups of people, and achieving intelligent integrated control. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0042] The components include: 1. Controller; 2. Outer frame; 3. Magnetic Venetian blind slats; 4. Magnetic Venetian blind cords; 5. Roller blind motor; 6. Horizontal isolation strip; 7. Curtain retraction motor; 8. Vertical isolation strip; 9. Light intensity sensor; 10. Sealing strip. Detailed Implementation

[0043] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0044] See Figure 1 A preferred embodiment of an automatic window and door shading system is provided. This system is primarily used for intelligent automatic shading of large windows and doors that serve as exterior facades. In this embodiment, the system structure is described using a window structure as an example.

[0045] This embodiment includes an outer frame 2, which is the external support structure for the window sash. Since the improved window sash of the automatic window shading system in this embodiment has a greater self-weight, the outer frame 2 itself needs to have strong structural stability and be able to be assembled on the load-bearing structure of the building to ensure the structural stability of the window sash after assembly as the main structure.

[0046] The outer frame 2 is a rectangular aluminum alloy support frame. Its two outer sides abut against the load-bearing wall and are fixed to the load-bearing wall by expansion bolts. After the joint is filled with expanding foam and sealed with sealant, the outer edge is sealed. The top surface of the outer frame 2 abuts against the lower surface of the load-bearing beam and the bottom surface abuts against the surface of the floor slab. After being formed into a whole with the load-bearing beam and the floor slab by expansion bolts, the joint is filled with expanding foam and sealed with sealant.

[0047] The inner side of the outer frame 2 is fitted with a light-transmitting glass, which is a double-layered tempered glass with interlayer, similar to the common exterior glass structure. In this embodiment, the tempered glass is a high-transmittance tempered glass, and an anti-ultraviolet coating is formed on its outer surface.

[0048] The translucent glass is sealed at the outer edge of the interlayer with a sealing strip. Within the interlayer space of the translucent glass, horizontal and vertical interlocking strips 6 and 8 are formed, arranged in a staggered pattern. Both the horizontal and vertical interlocking strips 6 and 8 are made of rubber. Furthermore, pre-formed cavities for facilitating wiring are present in the horizontal and vertical interlocking strips 6 and 8, as well as the sealing strip 10 which serves as the outer edge seal. The horizontal and vertical interlocking strips 6 and 8 serve two purposes:

[0049] One is to use the sealing strip 10 to establish an internal support and structural buffer between the double tempered glass of the skylight, and to improve the impact resistance of the skylight after it is made into a large size by using the material characteristics of the horizontal isolation strip 6 and the vertical isolation strip 8, so as to ensure the overall structural strength and stability of the skylight.

[0050] Secondly, by combining horizontal isolation strips 6 and vertical isolation strips 8, the interlayer of the light-transmitting glass is divided into several independently arranged sub-units in the corresponding plane of the interlayer space, and magnetic blinds are installed in these independent sub-units.

[0051] Due to the horizontal and vertical structural features of the horizontal and vertical isolation strips 6 and 8, the sub-units separated by the sealing strip 10, horizontal isolation strips 6, and vertical isolation strips 8 are also rectangular. In this embodiment, the horizontal isolation strips 6 and vertical isolation strips 8 evenly divide the light-transmitting glass area into sub-units of the same size. In another embodiment, the placement of the horizontal isolation strips 6 and vertical isolation strips 8 can be modified according to actual lighting and decoration needs; for example, the horizontal isolation strips 6 can be placed on the floor slab between floors, or the vertical isolation strips 8 can be placed on interior partition walls to increase the obstruction of the view and ensure the transparency of the view.

[0052] Each magnetically controlled Venetian blind in the sub-unit includes a magnetically controlled Venetian blind slat 3, a magnetically controlled Venetian blind cord 4, a roller blind motor 5, and a retractable blind motor 7. The magnetically controlled Venetian blind slat 3 and the magnetically controlled Venetian blind cord 4 constitute the main body of the magnetically controlled Venetian blind. The size of the magnetically controlled Venetian blind after unfolding corresponds to the area of ​​the sub-unit to achieve sun shading operation of the sub-unit. The roller blind motor 5 and the retractable blind motor 7 are the electrical control components, connected to the upper part of the magnetically controlled Venetian blind cord 4. The roller blind motor 5 is responsible for synchronously rotating the magnetically controlled Venetian blind slat 3 through the magnetically controlled Venetian blind cord 4, thereby controlling the opening angle of the blind. The retractable blind motor 7 is used to pull up the Venetian blind slat 3 after it has been adjusted to be horizontal, so as to retract the magnetically controlled Venetian blind completely or partially after it has been leveled.

[0053] In this embodiment, the roller shutter motor 5 and the curtain retractor motor 7 are micro motors, which are encapsulated in the pre-formed assembly space on the lower surface of the horizontal isolation strip 6 at the top of the corresponding sub-unit. The material properties of the horizontal isolation strip 6 can also clamp and fix the roller shutter motor 5 and the curtain retractor motor 7 without additional fasteners.

[0054] In addition, several light intensity sensors 9 are provided in the sealing strip 10 and the vertical isolation strip 8. These light intensity sensors 9 are arranged in pairs, with the two light intensity sensors 9 in a group respectively embedded in the sealing strip 10 / vertical isolation strip 8 on both sides of the corresponding sub-unit. The sampling side of the light intensity sensor faces the outside to sample the outdoor light intensity. In this embodiment, the number of light intensity sensors 9 in the height direction of a single sub-unit is three, and the three groups of light intensity sensors 9 are respectively arranged at the top, bottom and center of the sub-unit.

[0055] In other embodiments, if the sub-unit is smaller in height, only two sets of light intensity sensors 9 can be set, and the four light intensity sensor units 9 of the two sets of light intensity sensors 9 can be set at the four corners of a single sub-unit. If the sub-unit is larger in height, more sets of light intensity sensors 9 can be set, so that the magnetic venetian blind can switch more smoothly between the functions of light transmission and shading, and the shading effect is better.

[0056] In addition, in order to reduce the number of light intensity sensors 9 and reduce the data processing burden on the processor caused by redundant data, two sub-units that are adjacent to each other in the illustrated state can call the real-time data of the light intensity sensors 9 installed in the corresponding vertical isolation strips 8 on the shared vertical side as their own sensing and control data.

[0057] The sealing strip 10, vertical isolation strip 8, and horizontal isolation strip 6 have wire cavities formed in them. In the automatic sunshade system for doors and windows, the roller shutter motor 5, curtain retraction motor 7, and light intensity sensor 9, as electrical and signal-related components, can conveniently run wires through the wire cavities in the sealing strip 10, vertical isolation strip 8, and horizontal isolation strip 6 when they are embedded in them. After extending out of the sealing strip 10 at the outer edge, they are connected to the interface cable tray and assembled with the controller 1 through the interface cable tray.

[0058] Under the technical conditions of this embodiment, the magnetically controlled Venetian blind, roller blind motor 5, curtain retraction motor 7, and light intensity sensor 9 are encapsulated in the middle of the interlayer in a waterproof and dustproof manner, requiring no cleaning, saving space, and effectively extending the service life of related components. Simultaneously, it effectively reduces interference from the external environment on the equipment components, enhancing reliability. When a corresponding equipment component is damaged, it is only necessary to disconnect the interface cable from the controller 1, remove the light-transmitting glass, separate the sealing strip 10, and then repair or replace the damaged equipment component. After repackaging, it can be reassembled within the outer frame 2. After reassembly, the interface cable can be reconnected to the controller 1 for reuse.

[0059] In this embodiment, the controller 1 has a signal transceiver and a signal amplification circuit. The signal transceiver is used to receive the position of the magnetic blind (obtained through feedback from the curtain retraction motor 7) and the curtain angle opening signal (obtained through feedback from the roller blind motor 5) and the light intensity signal from the light intensity sensor 9 through the interface line. After collecting the above signals, it forms a parametric signal. After amplifying the generated parametric signal using the signal amplification circuit, it is transmitted to the calculation part of the controller 1. The calculation part of the controller 1 demodulates and judges the parametric signal and outputs an execution signal to perform feedback control on the roller blind motor 5 and the curtain retraction motor 7. The roller blind motor 5 and the curtain retraction motor 7, as the final execution units, receive the above feedback control and control the magnetic blind on the corresponding subunit to control the automated and intelligent operation of the shading system on the skylight.

[0060] Before automating the sunshade system, the lower and upper limits of light intensity are first set using controller 1. These limits can be selected based on the lighting conditions of different areas and the user's sensitivity to light intensity, or they can be set to preset values ​​built into the system. When manually setting the lower and upper limits, the lower limit is set to the lowest comfortable light intensity acceptable to the user; any lower intensity would require supplemental lighting. The upper limit is set to the highest comfortable light intensity acceptable to the user; any higher intensity would require closing the eyes or providing shade.

[0061] The intelligent automatic shading action of the automatic shading system for doors and windows in this embodiment operates as follows:

[0062] Inside the light-transmitting glass, a single sub-unit is used as an independent working unit. Real-time light intensity data is collected using a light intensity sensor. Based on the lower and upper threshold values ​​set in the previous steps, numerical comparisons are performed. According to the comparison results, the controller drives the roller blind motor 5 and the curtain retraction motor 7 to control the operation of the magnetic venetian blind.

[0063] Specifically, it includes the following processing levels:

[0064] First-level data processing: The light intensity values ​​of the two bottom light intensity sensors (both sides of the bottom of the sub-unit) are compared. After the data from the bottom two light intensity sensors are processed and the relevant actions are completed, the light intensity sensors in the middle position and then the bottom two light intensity sensors (both sides of the top of the sub-unit) are processed sequentially and the relevant actions are completed. Under this processing level:

[0065] If the real-time illumination data obtained from both sides of the illumination intensity sensor 9 is less than the lower threshold, the controller 1 determines that the illumination intensity is insufficient. At this stage, the main purpose of the light-transmitting glass is to provide light. In this case, the magnetic venetian blind slats 3 are laid flat by the roller blind motor 5 (so that the magnetic venetian blind slats 3 are horizontal, so that the magnetic venetian blind slats 3 can be folded and contracted by pulling the magnetic venetian blind cord 4 by the curtain retraction motor 7). Then, the curtain retraction motor 7 is used to retract the laid-flat magnetic venetian blind slats 3 upward to the set height position of the previous illumination intensity sensor 9.

[0066] If the real-time illumination data obtained from both light intensity sensors 9 exceed the upper limit threshold, the controller 1 determines that the illumination intensity is too strong and dazzling or causes a significant increase in the building's interior temperature. This corresponds to the current primary need for shading in the use of skylights. Under this condition, the retractable blind motor 7 lowers the flattened magnetic venetian blind slats 3 to the set height position of the next light intensity sensor 9, and the roller blind motor 5 closes the magnetic venetian blind slats 3 to provide shading.

[0067] If one of the light intensity sensors 9 (hereinafter referred to as light intensity sensor I) in the same group obtains real-time light data that falls between the lower and upper thresholds, the system enters the second-level data processing stage. Under this data processing stage, the controller 1 determines that the light-transmitting glass needs to be partially opened by the magnetic blinds to balance light transmission and shading. The difficulty at this data processing stage lies in the determination and selection of the light-transmitting and shading areas on the corresponding plane of the sub-unit.

[0068] Second-level data processing: Real-time time (via the built-in clock unit in controller 1 or synchronized with the network after networking) and location (pre-set in controller 1 according to the building's orientation) are determined for the light intensity sensor I.

[0069] If the real-time time is before 12 noon, check if the light intensity sensor I is on the east side. If so, control the opening height of the magnetic Venetian blind slats 3 using another light intensity sensor 9 (hereinafter referred to as light intensity sensor II). When the magnetic Venetian blind slats 3 are half-open or fully open, control the opening angle of the blind corners using light intensity sensor I. If not, the opposite is true: control the opening height of the magnetic Venetian blind slats 3 using light intensity sensor I, and control the opening angle of the blind corners using light intensity sensor II when the magnetic Venetian blind slats 3 are half-open or fully open.

[0070] If the real-time time is after 12 noon, check if the light intensity sensor is on the western side. If so, control the opening height of the magnetic Venetian blind slats 3 through light intensity sensor II, and control the blind angle opening through light intensity sensor I when the magnetic Venetian blind is half-open or fully open. If not, the opposite is true: control the opening height of the magnetic Venetian blind slats 3 through light intensity sensor I, and control the blind angle opening through light intensity sensor II when the magnetic Venetian blind is half-open or fully open.

[0071] When the opening height of the magnetic Venetian blind slats 3 is controlled by the light intensity sensor 9:

[0072] If the real-time illumination data obtained by the light intensity sensor 9 is less than the lower threshold, the magnetically controlled Venetian blind slats 3 will retract to the set height position of the previous light intensity sensor 9 (e.g., from the set plane position of the light intensity sensor 9 at the bottom of the sub-unit to the set plane position of the light intensity sensor 9 in the middle of the sub-unit, or from the set plane position of the light intensity sensor 9 in the middle of the sub-unit to the set plane position of the light intensity sensor 9 at the top of the sub-unit). At this time, the light-transmitting glass will shift towards the light-transmitting requirement while taking into account both light transmission and shading.

[0073] If the real-time illumination data obtained by the light intensity sensor is greater than the upper threshold, the magnetically controlled venetian blind will be lowered to the set height position of the next light intensity sensor (e.g., from the set plane position of the light intensity sensor 9 at the bottom of the sub-unit to the set plane position of the light intensity sensor 9 in the middle of the sub-unit, or from the set plane position of the light intensity sensor 9 in the middle of the sub-unit to the set plane position of the light intensity sensor 9 at the top of the sub-unit). At this time, the light-transmitting glass will shift towards the shading requirement while taking into account both light transmission and shading.

[0074] If the real-time illumination data obtained by the light intensity sensor is between the lower and upper thresholds, the magnetically controlled Venetian blind is lowered to the midpoint between the current light intensity sensor and the next light intensity sensor. Based on this, the lowering of the magnetically controlled Venetian blind has five stopping points in the vertical direction of the sub-unit, corresponding to fully open, fully closed, half open, 2 / 5 open, and 4 / 5 open respectively. This makes the magnetically controlled Venetian blind more dynamic and flexible in terms of opening degree. It can work in conjunction with the roller blind motor 5 to adjust the opening degree of the magnetically controlled Venetian blind slats 3, effectively improving the adaptability of the automatic shading system for doors and windows to light intensity during application, and further enhancing the comfort of the building's lighting environment.

[0075] When the opening angle of the magnetic Venetian blind slats 3 is controlled by the light intensity sensor 9:

[0076] The corresponding opening ratio of the magnetically controlled Venetian blind slats:

[0077]

[0078] Where m is the upper threshold, n is the lower threshold, and x is the real-time measurement value of the light intensity sensor; when a is 0, it means that the magnetic blind slats 3 of the magnetic blind are in a closed state with a 45° angle and sloped towards the outside (considering that in this state, the magnetic blind slats 3 can block solar radiation from penetrating the glass and directly shining into the room, thus preventing the formation of thermal polymerization effect and reducing the radiation energy consumption of the external window, it is considered that the magnetic blind slats 3 are in a closed state in this state); when a is closer to 1, it means that the magnetic blind is closer to a fully open state (i.e., the magnetic blind slats 3 are kept horizontal); the corresponding a is the proportional angle corresponding to the conversion of the adjustment range of the magnetic blind slats 3 in the horizontal state and the 45° angle sloped towards the outside into 100 parts.

[0079] The magnetically controlled Venetian blinds are processed sequentially from bottom to top at all light intensity sensor locations within the sub-unit. After a set time interval, the above two-level processing operations are performed again to update the state of the magnetically controlled Venetian blinds. The corresponding time interval can be set on the controller 1, such as 10 minutes or 300 seconds. That is, after the corresponding time interval, the magnetically controlled Venetian blinds in all sub-units within the light-transmitting glass undergo a state change.

[0080] In this embodiment, to further improve the practicality of controller 1, a manual control module and a remote communication module are also provided in controller 1: the manual control module can facilitate real-time manual control of the system; while the remote communication module is a combination of a 4G / 5G network module and a WiFi module. In short distances, it can connect to controller 1 via mobile phones, PDAs, tablets and other devices through the WiFi module. In long distances, it can remotely access controller 1 through the APP on mobile phones, PDAs, tablets and other devices and the 4G / 5G network module to achieve remote control and linkage control. It can also connect to the Internet of Things and smart home platforms through the network to achieve networked cloud control.

[0081] The automatic shading system for doors and windows in this embodiment replaces the original manually controlled curtain structure in the field of traditional large-size doors and windows. It can be electrically controlled through wired electric switches and wireless network control to minimize the amount of manual operation. It can achieve intelligent operation, is easy to install, and has intuitive operation status and a high degree of automation.

[0082] In addition, this encapsulated partitioned shading structure within the interlayer enables partitioned shading control, regulating the amount and position of light entering the window. It can balance the effects of light transmission and shading on large windows and doors, making it more suitable for use on large windows and doors compared to other existing intelligent shading systems. This caters to the needs of public buildings such as hospitals, train stations, government agencies, and schools, as well as families with personalized service requirements.

[0083] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the invention. Furthermore, it should be understood that after reading the technical content of this invention, those skilled in the art can make various alterations, modifications, and / or variations to the invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. An automatic sunshade method based on a door and window automatic sunshade system, the door and window automatic sunshade system comprising an outer frame which is an outer supporting structure of a door leaf or a window leaf, and a light glass embedded in the outer frame, the light glass being a double-layered tempered glass with a sandwiched layer; the light glass is sealed by a sealing rubber strip at the outer edge of the sandwiched layer, and a vertical partitioning strip is formed in the sandwiched layer space, the light glass is divided into a plurality of independent sub-units by the vertical partitioning strip, the sub-units are rectangular, and a magnetic louver blind is formed in the corresponding sandwiched layer of the sub-units, the area of the magnetic louver blind corresponding to the area of the sub-unit; the system further comprises: a roller blind motor for controlling the curtain angle opening of the magnetic louver blind and a rolling-up motor for rolling up the magnetic louver blind after leveling; a light intensity sensor arranged at the outer edge of each sub-unit, the light intensity sensor being a plurality of sensors, and being arranged at the same height position on the two vertical sides of the sub-unit respectively; the light intensity sensors on one side are uniformly spaced along the height direction of the sub-unit; a controller for receiving the position and curtain angle opening signal of the magnetic louver blind, the light intensity sensor signal, and performing feedback control on the roller blind motor and the rolling-up motor according to the received signals; characterized in that the method comprises the following operation steps: S1 setting the lower threshold and the upper threshold of the light intensity by the controller; S2 taking a single sub-unit as an independent working unit in the light glass, collecting real-time light intensity data by the light intensity sensor, comparing the collected data with the lower threshold and the upper threshold collected in step S1, and driving the roller blind motor and the rolling-up motor by the controller to control the operation of the magnetic louver blind according to the comparison result: firstly, comparing the light intensity values on both sides of the sub-unit at the lowermost position of the sub-unit: if the real-time light data obtained by the light intensity sensors on both sides are less than the lower threshold, the curtain leaves of the magnetic louver blind are flattened by the roller blind motor, and the flattened curtain leaves are rolled up to the setting height position of the upper light intensity sensor by the rolling-up motor; if the real-time light data obtained by the light intensity sensors on both sides are greater than the upper threshold, the flattened curtain leaves are lowered to the setting height position of the lower light intensity sensor by the rolling-up motor, and the curtain leaves of the magnetic louver blind are closed to perform sunshade by the roller blind motor; if one of the real-time light data obtained by the light intensity sensors on both sides is between the lower threshold and the upper threshold, the real-time time and the position of the corresponding light intensity sensor are judged: if the real-time time is before 12 o'clock, it is determined whether the light intensity sensor is on the east side, if yes, the opening height position of the magnetic louver blind is controlled by the light intensity sensor, and the curtain angle opening of the magnetic louver blind is controlled by the light intensity sensor when the magnetic louver blind is half-open or fully open, and if not, the opposite is true. If the real-time time is after 12:00 noon, check if the light intensity sensor is on the west side, if yes, control the opening height position of the magnetorheological blind through the light intensity sensor, and if the magnetorheological blind is in a half-open or fully open state, control the curtain angle opening degree of the magnetorheological blind through the light intensity sensor, and if not, the opposite is true; When the opening height position of the magnetorheological blind is controlled through the light intensity sensor: If the real-time light data obtained by the light intensity sensor is less than the lower threshold value, the magnetorheological blind is retracted to the set height position of the previous light intensity sensor; If the real-time light data obtained by the light intensity sensor is greater than the upper threshold value, the magnetorheological blind is lowered to the set height position of the next light intensity sensor; If the real-time light data obtained by the light intensity sensor is between the lower threshold value and the upper threshold value, the magnetorheological blind is lowered to the intermediate position between the current light intensity sensor and the next light intensity sensor; When the curtain angle opening degree of the magnetorheological blind is controlled through the light intensity sensor: The corresponding curtain angle opening degree ratio of the magnetorheological blind: wherein, is an upper threshold value, is a lower threshold value, is a real-time measurement value of the light intensity sensor; when closer to 0 indicates that the magnetically controlled louver is closer to the closed state, when closer to 1 indicates that the magnetically controlled louver is closer to the fully open state; S3 completes the processing action of the magnetorheological blind at all light intensity sensor positions in the subunit from bottom to top in sequence, and after a set time interval, the operation of step S2 is performed again and the state of the magnetorheological blind is updated.

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