Local dimming method, panoramic door and smart home system

Abstract

The invention relates to the technical field of smart home, and discloses a local dimming method, a panoramic door and a smart home system.The local dimming method is applied to the panoramic door, the panoramic door comprises dimming glass capable of locally adjusting light transmittance, and the local dimming method comprises the steps that the incident angle of current sunlight on the dimming glass is detected; a preset distance of a sunshade structure relative to the panoramic door is determined, and the sunshade structure is located on the facing side of the panoramic door; determining an irradiation area of sunlight on the dimming glass according to the incident angle and a preset distance; the light transmittance of the dimming glass located in the irradiation area is adjusted to the preset light transmittance, and therefore the panoramic door can independently adjust the light transmittance of the dimming glass located in the irradiation area, local dimming of the dimming glass is achieved, and indoor sunscreen is achieved; and the dimming glass positioned outside the irradiation area can keep the current light transmittance, so that outdoor scattered light can be conveniently emitted into a room, and indoor brightness can be kept while indoor sunshade is realized.

Description

Technical Field

[0001] The present invention relates to the field of smart home technology, and in particular to a local dimming method, a panoramic door and a smart home system. Background Art

[0002] With the continuous improvement of living standards, panoramic doors are more and more widely used in homes. Panoramic doors have high door panels and large glass areas, which can achieve a larger visual space and meet users' pursuit of a high standard of life.

[0003] Currently, panoramic doors generally use curtains for sunshade, but the curtains easily affect the indoor brightness after blocking the panoramic door, resulting in a poor user experience. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a local dimming method, which can achieve indoor sunshade while ensuring indoor brightness.

[0005] According to the local dimming method of the first aspect of the present invention, the local dimming method is applied to a panoramic door, the panoramic door includes a dimming glass with locally adjustable transmittance, and the local dimming method includes: detecting the incident angle of current sunlight on the dimming glass; determining a preset distance of a shading structure relative to the panoramic door, the shading structure being located on the side facing the panoramic door; determining an irradiation area of ​​the sunlight on the dimming glass based on the incident angle and the preset distance; and adjusting the dimming glass located in the irradiation area to a preset transmittance.

[0006] The local dimming method, panoramic door and smart home system according to the embodiments of the present invention have at least the following beneficial effects: the local dimming method is applied to the panoramic door, the panoramic door includes a dimming glass with locally adjustable transmittance, and the local dimming method includes: detecting the incident angle of the current sunlight on the dimming glass; determining the preset distance of the sunshade structure relative to the panoramic door, the sunshade structure is located on the side of the panoramic door; determining the irradiation area of ​​the sunlight on the dimming glass according to the incident angle and the preset distance; and adjusting the dimming glass located in the irradiation area to the preset transmittance, so that the panoramic door can adjust the transmittance of the dimming glass located in the irradiation area separately, realize the local dimming of the dimming glass, help control the intensity of sunlight entering the room or block the sunlight, help to achieve indoor sun protection, improve the light aging of the home, and provide users with a better indoor environment. The dimming glass located outside the irradiation area can maintain the current transmittance, which is convenient for the outdoor scattered light to enter the room, which helps to achieve indoor shading while keeping the room bright.

[0007] According to some embodiments of the present invention, the above steps detect the current incident angle of sunlight on the dimming glass, including: obtaining the orientation information of the sun; judging whether the sunlight can shine on the dimming glass based on the orientation information of the panoramic door and the orientation information of the sun; and when it is determined that the sunlight can shine on the dimming glass, detecting the current incident angle of sunlight on the dimming glass.

[0008] According to some embodiments of the present invention, when it is determined that sunlight can irradiate the dimming glass, the panoramic door is controlled to close and the current incident angle of sunlight on the dimming glass is detected.

[0009] According to some embodiments of the present invention, the above step of detecting the current incident angle of sunlight on the dimming glass also includes: obtaining the orientation information of the sun; and determining the incident angle based on the orientation information of the panoramic door and the orientation information of the sun.

[0010] According to some embodiments of the present invention, the above steps of obtaining the sun's position information include: obtaining the geographic information of the panoramic gate; determining the current time zone based on the geographic information of the panoramic gate; determining the current time information based on the time zone; and determining the sun's position information at the corresponding time based on the time information.

[0011] According to some embodiments of the present invention, the dimming glass includes several dimming zones; the above steps determine the irradiation area of ​​the sunlight on the dimming glass according to the incident angle and the preset distance, including: determining the irradiation height of the sunlight on the dimming glass based on the incident angle and the preset distance; and determining the dimming zone located below the irradiation height as the irradiation area.

[0012] According to some embodiments of the present invention, the local dimming method also includes: obtaining weather information of the location of the panoramic door; when it is determined that it is currently raining, obtaining the current wind direction; obtaining the orientation of the panoramic door; and if the wind direction is on one side of the orientation of the panoramic door, closing the panoramic door.

[0013] According to some embodiments of the present invention, if the wind direction is located on the left and right sides of the panoramic door, the panoramic door is opened to a preset position; and / or, if the wind direction is to the side away from the direction of the panoramic door, the panoramic door is opened.

[0014] According to the second aspect of the present invention, the panoramic door is applied to a smart home system, and includes a movable door and a control component. The movable door includes a dimming glass with locally adjustable light transmittance and has an open state and a closed state. The control component is used to execute any step of the local dimming method in the above embodiment. The control component includes a controller, a first detector and a second detector. The controller is used to control the dimming glass to adjust the light transmittance and to control the movement of the movable door. The first detector is used to detect the geographic information of the panoramic door, and the second detector is used to detect the orientation information of the panoramic door. The first detector and the second detector are both communicatively connected to the controller.

[0015] The smart home system according to the third aspect of the embodiment of the present invention includes the panoramic door in the above embodiment.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 A schematic diagram of the structure of a panoramic door provided by an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the hardware architecture of a control component and a main control module provided in an embodiment of the present invention is shown;

[0020] Figure 3 A schematic diagram of a flow chart of a local dimming method provided by an embodiment of the present invention is shown;

[0021] Figure 4 A schematic diagram showing sunlight irradiating a panoramic door provided by an embodiment of the present invention is shown;

[0022] Figure 5 Shows Figure 4 A schematic diagram of the structure of the panoramic door in which the transmittance is adjusted locally;

[0023] Figure 6 A schematic diagram showing the orientation and wind direction of a panoramic door provided by an embodiment of the present invention.

[0024] Reference numerals:

[0025] Panoramic door 100 ; sliding door 110 ; dimming glass 111 ; fixed door 130 . DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0031] See also Figure 1 to Figure 2 The embodiment of the present application provides a smart home system, which can freely combine a variety of smart home appliances according to needs. For example, the smart home appliances can be panoramic doors 100, electric curtains, electric windows, electric lights, projectors, air conditioners, range hoods, sweepers, humidifiers, air purifiers, etc.

[0032] The smart home system may include a main control module, which may be connected to communicate with smart home appliances, so that the main control module may uniformly control a variety of smart home appliances.

[0033] As an example, the main control module may be a control panel, a tablet computer, a mobile phone, a remote controller or other control devices.

[0034] In some embodiments, the panoramic door 100 can be installed at a desired location as needed. In an embodiment of the present application, the panoramic door can be installed between the balcony and the living room as a partition door between the balcony and the living room.

[0035] In some embodiments, the panoramic door 100 includes a moving door 110 and a control assembly.

[0036] The movable door 110 is movably mounted on a wall or a door frame.

[0037] The sliding door 110 includes a dimming glass 111 , or the sliding door 110 may be a dimming glass door.

[0038] The dimming glass 111 can adjust the local light transmittance or the overall light transmittance to flexibly adjust the intensity and incident area of ​​sunlight entering the room, which helps to ensure the indoor brightness while playing a role in indoor sun protection.

[0039] The movable door 110 has an open state and a closed state. When the movable door 110 is in the open state, the panoramic door 100 can be opened to improve the indoor air permeability. When the movable door 110 is in the closed state, the panoramic door 100 can be closed to prevent outdoor rain, dust, etc. from entering the room.

[0040] The control assembly may be mounted on the top or bottom of the sliding door 110, or the control assembly may be mounted on a door frame or a wall.

[0041] As an example, the panoramic door 100 may include a slide rail, which may be mounted on a wall or a door frame and may be located at the top or bottom of the movable door 110. The movable door 110 may be movably connected to the slide rail, and the control assembly may also be mounted on the slide rail.

[0042] The control component can be used to execute any step of the local dimming method in the following embodiments.

[0043] In some embodiments, the control component may be located on a side of the panoramic door 100 facing away from the interior of the room, so as to better detect the current geographical location.

[0044] In some embodiments, the control assembly includes a controller, a first detector, and a second detector.

[0045] The controller is used to control the dimming glass 111 to adjust the light transmittance, and is used to control the movement of the sliding door 110.

[0046] As an example, the control component may further include a driver, a driving end of which may be connected to the movable door 110, and the driver and the controller may be in communication connection. When the controller receives a first control instruction, the dimming glass 111 is controlled to adjust the partial or overall light transmittance; when the controller receives a second control instruction, the driver is controlled to operate to move the movable door 110 to an open state; when the controller receives a third control instruction, the driver is controlled to operate to move the movable door 110 to a closed state; when the controller receives a fourth control instruction, the driver is controlled to operate to move the movable door 110 to a half-open state. The specific position of the movable door 110 in the half-open state can be preset according to requirements.

[0047] The control instructions (first control instruction, second control instruction, third control instruction, fourth control instruction, etc.) can be issued by the main control module or by the internal algorithm of the controller. The control instructions can be issued by the user operating the main control module, or can be issued based on the algorithm inside the main control module or the controller.

[0048] The controller may be a microcontroller unit (MCU) or other control devices.

[0049] The first detector and the second detector cooperate to detect the position information of the panoramic door 100 .

[0050] Specifically, the first detector is used to detect geographic information of the panoramic door 100 , wherein the geographic information may include longitude information and latitude information.

[0051] As an example, the first detector may adopt a GPS positioning chip.

[0052] The second detector is used to detect the orientation information of the panoramic door 100. For example, the second detector can detect whether the orientation of the panoramic door 100 is due east, due south, due west, due north, southeast, southwest, northeast or northwest.

[0053] As an example, the second detector may be a geomagnetic sensor.

[0054] It can be understood that the panoramic door 100 can be connected to the main control module for communication so as to obtain the current time zone, time and other information through the main control module.

[0055] As an example, the control component may further include a wireless signal unit, which may be connected to the main control module signal to connect the panoramic door 100 to the network system of the smart home.

[0056] The first detector and the second detector are both connected to the controller in communication to transmit their respective detection information to the controller, and the controller controls the dimming of the dimming glass 111 and the movement of the movable door 110 according to the detection information. Dimming may refer to adjusting light transmittance.

[0057] In some embodiments, when detecting latitude information, the first detector may divide the latitude into a plurality of latitude intervals, and then determine the latitude interval where the latitude information of the panoramic door 100 is located, which helps to reduce the amount of data storage and reduce the difficulty of detection.

[0058] As an example, the latitude division is divided into latitude intervals of every 10° from the equator to the Tropic of Cancer and the Tropic of Capricorn, such as north latitude [0, 10°], north latitude [10, 20°], south latitude (0, 10°], south latitude (10°, 20°], etc. When the first detector detects the latitude information of the panoramic door 100, the controller can determine the latitude interval of the panoramic door 100 based on the latitude information.

[0059] In some embodiments, when detecting longitude information, the first detector may divide the longitude into multiple longitude intervals, which helps to reduce the amount of data storage and reduce the difficulty of detection.

[0060] As an example, the longitude interval division may be the same as the international time zone, so as to facilitate the subsequent determination of the time zone of the corresponding region.

[0061] In some embodiments, when the second detector detects the orientation of the panoramic door 100, some or all of the orientations of due east, due south, due west, due north, southeast, southwest, northeast or northwest can be divided into intervals. When detecting the orientation of the panoramic door 100, the orientation interval in which the panoramic door 100 is located can be determined, which helps to reduce the amount of data storage and reduce the difficulty of detection.

[0062] As an example, due east, due south, due west, and due north can all be set to ±10°. Then the angle between the interval where due east is located and the interval where due south is located can be southeast. Southwest, northeast, or northwest can also be calculated in the same way as southeast, so I will not go into details.

[0063] In some embodiments, the panoramic door 100 may include two movable doors 110, which may move independently or synchronously. The two movable doors 110 help the panoramic door 100 have a larger viewing area, improve the aesthetics of the panoramic door 100, and better meet the needs of users.

[0064] The structures of the two sliding doors 110 may be substantially the same, and both may perform partial or overall dimming.

[0065] For ease of description, unless otherwise specified, the following explanation will be given by taking one of the movable doors 110 as an example.

[0066] In some embodiments, the dimming glass 111 may be made of polymer dispersed liquid crystal (PDLC) glass to achieve local and overall dimming. The specific structure of the polymer dispersed liquid crystal glass can refer to the prior art and will not be described in detail here. In some other embodiments, the dimming glass 111 may also be made of other glass or transparent materials that can perform local dimming.

[0067] In some embodiments, the dimming glass 111 may include a plurality of dimming zones, and the plurality of dimming zones may be dimmed synchronously or individually.

[0068] The arrangement of the plurality of dimming zones may be arranged according to requirements. For example, the plurality of dimmers may be arranged along the height direction (ie, the vertical direction) of the dimming glass 111 .

[0069] If each dimming zone can include two dimming zones, three dimming zones, four dimmers, etc., the specific number can be set according to demand.

[0070] In some embodiments, the panoramic door 100 may further include two fixed doors 130, which may be relatively fixedly mounted on a wall or door frame. The two fixed doors 130 may be spaced apart to form a door opening space in the middle, and the two movable doors 110 may be movably connected to the wall or door frame to open the door opening space, close the door opening space, or partially open the door opening space.

[0071] It should be noted that the fixed door 130 may also include the dimming glass 111 , or the fixed door 130 may be a dimming glass door, and the controller may synchronously dim the dimming glasses of the movable door 110 and the fixed door 130 .

[0072] See also Figures 3 to 5 The embodiment of the present application also provides a local dimming method, which is used for the panoramic door in the above embodiment. The control component can execute any step in the local dimming method, and the local dimming method includes steps S010, S020, S030 and S040.

[0073] Step S010: Detect the incident angle of the current sunlight on the dimming glass.

[0074] The current sunlight may refer to the sunlight emitted by the sun at the current geographical location, the current time zone, the current date (ie, year, month, day) and the current time (ie, the hour, minute, and second).

[0075] The angle of incidence can refer to the angle between the sun's rays and the dimming glass.

[0076] It is understandable that as the sun rises and sets, the incident angle of sunlight on the dimming glass is different at different times.

[0077] In some embodiments, in the above step S010: detecting the incident angle of the current sunlight on the dimming glass may include the following steps.

[0078] 1) Get the sun's position information.

[0079] 2) Based on the orientation information of the panoramic door and the orientation information of the sun, determine whether the sunlight can shine on the dimming glass.

[0080] 3) When it is determined that sunlight can irradiate the dimming glass, the incident angle of the current sunlight on the dimming glass is detected.

[0081] In this embodiment, the first detector and the second detector can obtain the orientation information of the panoramic door. The orientation information of the sun can be determined through the orientation information of the panoramic door. Then, by comparing the orientation information of the sun and the orientation information of the panoramic door, it can be determined whether the sunlight can shine on the dimming glass. When it is determined that the sunlight can shine on the dimming glass, the controller starts to calculate the incident angle of the sunlight on the glass.

[0082] Since the sun's position information is determined based on the panoramic door's position information and is less affected by the external environment, it helps to more accurately determine whether sunlight can shine on the dimming glass, reducing the possibility of misjudgment.

[0083] In some embodiments, the orientation information of the panoramic door may include geographic information and orientation information, wherein the geographic information may include longitude information and latitude information.

[0084] It can be understood that since the panoramic door has a fixed installation position, there will be no relative movement between the panoramic door and the earth. Therefore, the first detector can detect the orientation information of the panoramic door only once, and the controller or main control module can record and store the orientation information of the panoramic door for subsequent retrieval without the need to detect it through the first detector every time.

[0085] Alternatively, the first detector may also start detection according to the instruction of the controller, or the first detector may also perform detection at a specific frequency.

[0086] It should be noted that the geographic information of the panoramic door can also be pre-input into the controller or the main control module for storage when the panoramic door is installed, thereby eliminating the need for the first detector to detect the geographic information of the panoramic door.

[0087] In some embodiments, since the position of the sun relative to the panoramic door is not fixed, the sun's position information may be different in different locations, different times, and different seasons.

[0088] In this embodiment, the position information of the sun can be roughly determined by the solar declination and the solar azimuth.

[0089] Among them, solar declination refers to the angle between the sun's rays and the earth's equatorial plane, and the solar azimuth refers to the angle at which the sun's rays move east and west with the north-south axis as the axis.

[0090] As an example, the first detector detects that the orientation information of the panoramic door is 45° east by south, and the second detector detects that the geographical information of the panoramic door is 28°51′ north latitude and 120 degrees east longitude (i.e., East 8 time zone). The wireless signal unit obtains the current time information from the main control module as 15:00 on December 22, 2023 (Winter Solstice).

[0091] First, calculate the solar altitude angle hs, which is roughly the angle between the sun's rays and the normal of the dimming glass.

[0092] According to the formula sinhs=sinδsinφ+cosδcosφcosω, δ is the solar declination, ω is the solar hour angle, and φ is the latitude of the panoramic gate.

[0093] The solar declination δ≈-23°27′ on December 22, 2023 (winter solstice) was determined, and the latitude of the panoramic gate φ=28°51′.

[0094] In the area where the panoramic gate is located, the solar hour angle ω at noon is 0°, the solar hour angle ω in the morning is negative, -15° per hour, and the solar hour angle ω in the afternoon is positive, +15° per hour. Therefore, the solar hour angle ω at 15:00 in the afternoon is 45°.

[0095] Substitute the above data into the above formula, sinhs=sin(-23°27′)sin28°51′+cos(-23°27′)cos28°51′cos45°, and calculate hs≈22°05′, that is, the geographical location is 28°51′ north latitude, the date is the winter solstice, and the time is 15:00 in the afternoon, and the solar altitude angle is 22°05′.

[0096] Then calculate the azimuth angle α of the sun: according to the formula cosα=sinφsinhs-sinδ / (coshscosφ), where α is the azimuth angle of the sun. The azimuth angle of the sun can refer to the angle at which the sun's rays move east-west with the north-south axis as the center.

[0097] Substituting the above data into the above formula, we can calculate α≈44°27′. We can set the south direction to 0°, the east direction to negative, and the west direction to positive. It is estimated that the solar azimuth at this time is approximately 44°27′ south by west, and the orientation information of the panoramic door is 45° east by south. Therefore, it is judged that the panoramic door is obliquely facing the sun at this time, and the sunlight can shine on the dimming glass.

[0098] In some embodiments, when it is determined that sunlight can irradiate the dimming glass, the panoramic door is controlled to close and the current incident angle of sunlight on the dimming glass is detected.

[0099] In this way, when the controller determines that sunlight can shine on the dimming glass at this time, the controller can control the driving member to drive the sliding door to a closed state, and at the same time control the dimming of the dimming glass, which helps to avoid the situation where sunlight still shines directly into the room when the panoramic door is in an open state while the dimming glass is dimming.

[0100] It should be noted that the two steps of controlling the closing of the panoramic door and determining the incident angle of sunlight on the dimming glass can be performed simultaneously or successively.

[0101] In some embodiments, in the above step S010: detecting the incident angle of the current sunlight on the dimming glass, the following steps may also be included.

[0102] 1) Get the sun's position information.

[0103] 2) Determine the incident angle based on the orientation information of the panoramic door and the orientation information of the sun.

[0104] This embodiment can more accurately determine the incident angle of sunlight on the dimming glass through the orientation information of the panoramic door and the orientation information of the sun.

[0105] As an example, the incident angle i of sunlight on the dimming glass (such as Figure 4 ) may refer to the angle between the sun's rays and the panoramic door, wherein the panoramic door may be approximately perpendicular to the horizontal plane.

[0106] The incident angle of sunlight on the dimming glass is i=90°-hs. According to the above example, hs≈22°05′, so i≈67°95′ is calculated.

[0107] Therefore, at the geographical location of 28°51′ north latitude, at 15:00 in the afternoon, the incident angle of sunlight on the dimming glass is 67°95′.

[0108] In some embodiments, in the above steps: obtaining the sun's position information may include the following steps:

[0109] 1) Get the geographic information of the panoramic door.

[0110] 2) Determine the current time zone based on the geographic information of the panoramic door.

[0111] 3) Determine the current time information based on the time zone.

[0112] 4) Based on the time information, determine the position of the sun at the corresponding time.

[0113] In this embodiment, the geographical information of the panoramic door is detected by the first position detector, and the controller or the main control module can determine the time zone of the location of the panoramic door according to the longitude information in the geographical information, so that the sun's position can be judged separately in different time zones, which helps to use the panoramic door in places in different time zones and expands the use range of the panoramic door.

[0114] After determining the time zone where the panoramic door is located, the wireless signal unit can obtain the time information in the current time zone through the main control module, that is, the current date (i.e. year, month, day) and the current time (i.e. hours, minutes, and seconds), and then use the latitude information to determine the sun's position information under the corresponding time information, which helps to more accurately judge the sun's position information, so that the controller can more accurately control the dimming glass to dim.

[0115] The specific calculation method of the sun's position information may refer to the calculation method of the sun's altitude angle and the sun's azimuth angle in the above example, which will not be described in detail here.

[0116] Step S020: Determine a preset distance between the sunshade structure and the panoramic door.

[0117] The sunshade structure is located on the side facing the panoramic door.

[0118] When the panoramic door is actually installed, there are some sunshade structures on the side facing the panoramic door. Taking the panoramic door installed between the balcony and the living room as an example, the sunshade structure may refer to the top wall of the balcony, the guardrail of the balcony, the wall on the side of the balcony, and so on.

[0119] Among them, the preset distance may refer to the distance between the sunshade structure and the panoramic door, which may be pre-input and stored in the controller or main control module.

[0120] As an example, taking the sunshade structure as the top wall of the balcony, the preset distance may refer to the extension distance of the top wall of the balcony relative to the panoramic door along the direction of the panoramic door.

[0121] As another example, taking the sunshade structure as a guardrail of a balcony as an example, the preset distance may refer to the distance between the guardrail and the panoramic door along the direction of the panoramic door.

[0122] Step S030: Determine the irradiation area of ​​the sunlight on the dimming glass according to the incident angle and the preset distance.

[0123] Specifically, after determining the incident angle of sunlight on the dimming glass and the preset distance of the sunshade structure relative to the panoramic door, this embodiment can form a right triangle between the sunlight, the dimming glass and the sunshade structure. Since the angle between the sunlight and the dimming glass (i.e., the incident angle) can be calculated by the method in the above embodiment, and the size of the opposite side corresponding to the angle (i.e., the preset distance) is a known parameter, the area in the non-irradiated area can be calculated by a simple trigonometric function (i.e., the tangent function), and the area outside the non-irradiated area is the illuminated area. The specific calculation method can be seen in the following embodiment.

[0124] In some embodiments, in the above step S030: determining the irradiation area of ​​the sunlight on the dimming glass according to the incident angle and the preset distance may include the following steps.

[0125] 1) Based on the incident angle and the preset distance, determine the height of sunlight on the dimming glass.

[0126] 2) The dimming area below the irradiation height is determined as the irradiation area.

[0127] In this embodiment, the dimming glass is divided into a plurality of dimming zones, and the dimming zones below the irradiation height are all determined as irradiation areas, so that the local dimming of the dimming glass can be controlled, which helps to reduce the energy consumption of the dimming glass and reduce the control difficulty.

[0128] It should be noted that the illumination height needs to be determined based on the position of the sun relative to the panoramic door.

[0129] As an example, when the sun is on the side of the panoramic door, if the sunshade structure is the balcony top wall, the balcony top wall can block the sun's rays from the front to the panoramic door, forming an illuminated area and a non-illuminated area on the panoramic door. At this time, the illumination height can refer to the distance between the dividing line between the illuminated area and the non-illuminated area and the bottom of the panoramic door.

[0130] As another example, when the sun is at the side of the panoramic door, if the sunshade structure is the wall on the side of the balcony, the wall on the side of the balcony can block the sun's rays from the side to the panoramic door, forming an illuminated area and a non-illuminated area on the panoramic door. At this time, the illumination height can refer to the distance between the dividing line between the illuminated area and the non-illuminated area and the side of the panoramic door.

[0131] It can be understood that if there are two or more shielding structures on the balcony at the same time, the control component can calculate the illumination area of ​​each shielding structure on the dimming glass respectively, and dim the dimming areas within the corresponding illumination areas respectively.

[0132] Taking the sunshade structure as the top wall of the balcony as an example, a right triangle can be formed between the balcony top wall, the sunlight and the dimming glass. Since the incident angle of sunlight on the dimming glass can be calculated by the above embodiment, and the extension length of the balcony top wall can be pre-entered into the controller or the main control module, the distance of the non-irradiated area between the balcony top wall and the dividing line can be calculated by the tangent function. The height of the panoramic door can also be pre-entered into the controller or the main control module, so that the difference between the height of the panoramic door and the distance of the non-irradiated area is the irradiation height, and the controller can determine the dimming area below the irradiation height as the irradiation area.

[0133] It should be noted that the dimming zone where the boundary between the illuminated area and the non-illuminated area is located may have a part located in the illuminated area and another part located in the non-illuminated area. The local dimming method of the embodiment of the present application can determine all the dimming zones that are partially located in the illuminated area as the illuminated area, thereby helping to better avoid direct sunlight into the room; or, the local dimming method of the embodiment of the present application can also determine all the dimming zones that are partially located in the illuminated area as the non-illuminated area, which helps to save energy.

[0134] As an example, according to the above example, it is determined that the incident angle i of sunlight on the dimming glass is 67°95′, the protruding length of the balcony top wall is 1.5 meters, and the height of the panoramic door (height in the vertical direction) is 3 meters.

[0135] The irradiation height H = 3-1.5 / tan67°95′, and H≈2.4 meters. The controller determines all dimming areas below 2.4 meters as irradiation areas, and controls the irradiation areas to dim, so as to adjust the light transmittance of the dimming glass in the irradiation areas, reduce the intensity of sunlight entering the room or block the sunlight. The dimming areas above 2.4 meters can be kept in a light-transmitting state, so that the scattered light outside can enter the room and keep the room bright.

[0136] As another example, it is determined that the incident angle i of sunlight on the dimming glass is 40°, the protruding length of the balcony top wall is 1.5 meters, and the height of the panoramic door is 3 meters.

[0137] The irradiation height H = 3-1.5 / tan40°, and H≈1.21 meters. The controller determines all dimming areas below 1.21 meters as irradiation areas, and controls the irradiation areas to dim, so as to adjust the light transmittance of the dimming glass in the irradiation areas, reduce the intensity of sunlight entering the room or block the sunlight. The dimming areas above 1.21 meters can be kept in a light-transmitting state, so that the scattered light outside can enter the room and keep the room bright.

[0138] It should be noted that sunlight can also shine from the side of the balcony towards the panoramic door, and the irradiation area can also be calculated according to the above method, which will not be repeated here.

[0139] Step S040: adjusting the dimming glass located in the irradiation area to a preset transmittance.

[0140] The preset transmittance can be preset according to the demand. For example, when the dimming glass is not dimmed, assuming that the transmittance of the dimming glass is 98%, the preset transmittance can be set to 0%. When the dimming glass is dimmed, the transmittance of the dimming glass is adjusted to 0%, and the dimming glass can completely block the sunlight. It can be understood that the preset transmittance can also be adjusted to 97%, 50%, 10% or other values ​​to adjust the intensity of sunlight entering the room.

[0141] The local dimming method, panoramic door and smart home system provided by the embodiment of the present application, the local dimming method is applied to the panoramic door, the panoramic door includes a dimming glass with locally adjustable light transmittance, and the local dimming method includes: detecting the incident angle of the current sunlight on the dimming glass; determining the preset distance of the sunshade structure relative to the panoramic door, the sunshade structure is located on the side of the panoramic door; determining the irradiation area of ​​the sunlight on the dimming glass according to the incident angle and the preset distance; and adjusting the light transmittance in the irradiation area to the preset light transmittance, so that the panoramic door can adjust the light transmittance of the dimming glass in the irradiation area separately, realize the local dimming of the dimming glass, help control the intensity of sunlight entering the room or block the sunlight, help to achieve indoor sun protection, improve the light aging of the home, and provide users with a better indoor environment. The dimming glass located outside the irradiation area can maintain the current light transmittance, which is convenient for outdoor scattered light to enter the room, and helps to keep the room bright.

[0142] In some embodiments, the switchable glass can also adjust different light transmittances according to the intensity of sunlight.

[0143] As an example, the control component may also be provided with a photosensor, which can detect the intensity of sunlight.

[0144] When the intensity of sunlight reaches a first threshold, the dimming glass located in the illumination area is adjusted to a first transmittance; when the intensity of sunlight reaches a second threshold, the dimming glass located in the illumination area is adjusted to a second transmittance, wherein the first threshold is greater than the second threshold, and the first transmittance is less than the second transmittance.

[0145] That is, the stronger the sunlight is, the lower the transmittance of the dimming glass in the irradiated area is. Therefore, the transmittance of the irradiated area can be adaptively adjusted based on the intensity of sunlight, which improves the user experience and the performance of the panoramic door.

[0146] It is understandable that the local dimming method can also set a third threshold, a fourth threshold, etc., which will not be described in detail. The more thresholds are set, the more sensitive the dimming of the dimming glass is.

[0147] See also Figure 5 to Figure 6 In some embodiments, the local dimming method further includes the following steps.

[0148] 1) Get the weather information of the location of the panoramic door.

[0149] 2) When it is determined that it is currently raining, obtain the current wind direction.

[0150] 3) Get the direction of the panoramic door.

[0151] 4) If the wind direction is to the side of the panoramic door, close the panoramic door.

[0152] This embodiment obtains weather information at the current location, and when it is determined that it is currently raining, detects the current wind direction and the direction of the panoramic door. When it is determined that the wind direction and the direction of the panoramic door are relative, the controller determines that rain will be blown into the room. At this time, the controller controls the movable door to close to prevent water from entering the room.

[0153] Among them, weather information can be detected in multiple ways.

[0154] As an example, a panoramic door or a smart home system may be provided with a wind and rain sensor, which may be used to detect outdoor wind and rain conditions, thereby providing current weather information.

[0155] As another example, after the panoramic door determines the current geographical location through the first position detector, it obtains the current weather forecast information from the main control module through the wireless signal unit, thereby obtaining the current weather information.

[0156] It can be understood that the panoramic door can also determine the current weather information through the cooperation of the wind and rain sensor and the wireless signal unit, which helps to obtain more accurate weather information and reduce the possibility of misdetection.

[0157] The wind direction in this embodiment may refer to the wind direction of the side of the panoramic door facing the left and right sides of the baseline with the line connecting the left and right directions of the panoramic door as the baseline.

[0158] As an example, when the panoramic door faces due south (such as Figure 6 As shown), the east-west line is the reference line, and the south, southwest and southeast are the sides of the panoramic door. When the wind direction is south, southwest or southeast, the controller controls the movable door to close.

[0159] In some embodiments, if the wind direction is located on the left and right sides of the panoramic door, the panoramic door is opened to a preset position.

[0160] In this embodiment, when the wind blows from the side of the panoramic door toward the panoramic door, the controller determines that rain may blow from the side of the panoramic door into the room. The controller can control the movable door to partially open, which helps to reduce water ingress from the side and ensure indoor ventilation.

[0161] As an example, when the panoramic door is facing due south, due east and due west are located on the left and right sides of the panoramic door. If the wind direction is due east or due west, the controller controls the movable door to move to a partially open position.

[0162] Among them, the preset position can be input into the controller in advance, and the specific position can be set according to the requirements.

[0163] In some embodiments, if the wind direction is to the side away from the orientation of the panoramic door, the panoramic door is opened.

[0164] In this embodiment, when the wind blows from the back of the panoramic door toward the panoramic door, the controller determines that rain will not enter the room at this time, and the controller can control the movable doors to open completely to improve the indoor ventilation effect.

[0165] The wind direction in this embodiment may refer to the wind direction of the side away from the direction of the panoramic door on the left and right sides of the baseline with the line connecting the left and right directions of the panoramic door as the baseline.

[0166] As an example, when the panoramic door is facing due south, the east-west line is the baseline, and the north, northwest and northeast are the sides away from the panoramic door. When the wind direction is due north, northwest or northeast, the controller controls the movable door to close.

[0167] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A local dimming method, characterized in that: Applied to a panoramic door, the panoramic door includes dimming glass capable of locally adjusting light transmittance, and the local dimming method includes: Detecting the incident angle of the current sunlight on the dimming glass; Determining a preset distance of a sunshade structure relative to the panoramic door, the sunshade structure being located on a side facing the panoramic door; Determining an irradiation area of ​​the sunlight on the switchable glass according to the incident angle and the preset distance; and The dimming glass located in the irradiation area is adjusted to a preset transmittance.

2. The local dimming method according to claim 1, characterized in that: The detecting the incident angle of the current sunlight on the dimming glass comprises: Get the sun's position information; Based on the position information of the panoramic door and the position information of the sun, determining whether sunlight can irradiate the dimming glass; and When it is determined that sunlight can irradiate the dimming glass, the incident angle of the current sunlight on the dimming glass is detected.

3. The local dimming method according to claim 2, characterized in that: When it is determined that sunlight can irradiate the dimming glass, the panoramic door is controlled to close and the incident angle of the current sunlight on the dimming glass is detected.

4. The local dimming method according to claim 1, characterized in that: The detecting of the incident angle of the current sunlight on the dimming glass further includes: Obtaining information about the sun's position; and The incident angle is determined based on the orientation information of the panoramic door and the orientation information of the sun.

5. The local dimming method according to any one of claims 2 or 4, characterized in that: The obtaining of the sun's position information comprises: Obtaining geographic information of the panoramic door; Determining the current time zone based on the geographic information of the panoramic door; determining current time information based on the time zone; and Based on the time information, the position information of the sun at the corresponding time is determined.

6. The local dimming method according to claim 1, characterized in that: The dimming glass includes a plurality of dimming zones; and determining the irradiation area of ​​sunlight on the dimming glass according to the incident angle and the preset distance includes: Based on the incident angle and the preset distance, determining the irradiation height of the sunlight on the switchable glass; and The dimming area located below the irradiation height is determined as the irradiation area.

7. The local dimming method according to claim 1, characterized in that: The local dimming method further includes: Obtaining weather information at the location of the panoramic door; When it is determined that it is currently raining, obtain the current wind direction; Obtaining the orientation of the panoramic door; and If the wind direction is on one side of the direction of the panoramic door, the panoramic door is closed.

8. The local dimming method according to claim 7, characterized in that: If the wind direction is located on the left and right sides of the panoramic door, opening the panoramic door to a preset position; And / or, if the wind direction is to a side away from the direction of the panoramic door, the panoramic door is opened.

9. A panoramic door, characterized in that: Applied to the smart home system, the panoramic door comprises: A movable door, comprising a dimming glass with partially adjustable light transmittance, and having an open state and a closed state; and A control component, the control component is used to perform any step of the local dimming method according to any one of claims 1 to 8; the control component comprises a controller, a first detector and a second detector, the controller is used to control the dimming glass to adjust the transmittance and to control the movement of the movable door; the first detector is used to detect the geographical information of the panoramic door, and the second detector is used to detect the orientation information of the panoramic door; Wherein, the first detector and the second detector are both communicatively connected to the controller.

10. A smart home system, characterized in that: Including the panoramic door described in claim 9.

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