A method and system for controlling a window treatment

Abstract

The application discloses a curtain control method, comprising the following steps: S1, judging whether the absolute value of the lighting energy consumption difference is greater than the absolute value of the air conditioner energy consumption difference and the building energy consumption difference is greater than a first set threshold; if yes, entering step S2; if no, entering step S3; S2, judging whether the lighting energy consumption difference is zero; if yes, opening the curtain, if no, closing the curtain; S3, judging whether the absolute value of the building energy consumption difference is less than or equal to the first set threshold; if yes, entering step S4; if no, opening the curtain; S4, if the building energy consumption difference is less than zero, opening the curtain; if the building energy consumption difference is equal to zero, keeping the current state of the curtain; if the building energy consumption difference is greater than zero, closing the curtain. Compared with the prior art, the application can accurately evaluate the building energy consumption through multiple parameters, and comprehensively judge whether the curtain is opened or closed through the lighting, air conditioner and building energy consumption difference results, so that the building energy consumption is minimized.

Description

Technical Field

[0001] This invention relates to the field of building energy conservation technology, specifically to a curtain control method and system. Background Technology

[0002] As an important component of modern architecture, curtains not only have basic functions such as optimizing spatial aesthetics and reducing building decoration costs, but also significantly improve the quality of the built environment through flexible light and heat regulation. With the rapid development of green building and smart building technologies globally, curtain control technology is playing an increasingly crucial role in building energy conservation and optimizing indoor environmental comfort.

[0003] Chinese invention patent CN110522281A discloses an intelligent energy-saving curtain. This curtain adjusts its opening and closing by comparing the measured indoor light intensity with the optimal light intensity range, and controls the operation of the heating and cooling fans by comparing the measured indoor temperature with the optimal temperature range. Its disadvantage is that it only considers the single environmental variable of indoor light intensity to determine the opening and closing of the curtain, which cannot accurately assess the building's energy consumption, and therefore cannot achieve the energy-saving effect of minimizing building energy consumption. Summary of the Invention

[0004] This invention provides a curtain control method and system to address the problem that existing technologies cannot accurately assess building energy consumption, thus failing to achieve the energy-saving effect of minimizing building energy consumption.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] On the one hand, a curtain control method is provided, including the following steps: S1. Determine whether the absolute value of the lighting energy consumption difference is greater than the absolute value of the air conditioning energy consumption difference and whether the building energy consumption difference is greater than the first set threshold; if yes, it is scenario one, proceed to step S2; if no, proceed to step S3. S2. Determine if the lighting energy consumption difference is zero; if yes, open the curtains; otherwise, close the curtains. S3. Determine whether the absolute value of the building energy consumption difference is less than or equal to the first set threshold; if yes, it is scenario three, then proceed to step S4; if no, it is scenario two, then open the curtains. S4. If the building energy consumption difference is less than zero, open the curtains; if the building energy consumption difference is equal to zero, keep the curtains in their current state; if the building energy consumption difference is greater than zero, close the curtains. Among them, the lighting energy consumption difference is the difference between the lighting energy consumption of the room when the curtains are open and the lighting energy consumption of the room when the curtains are closed; The air conditioning energy consumption difference is the difference between the air conditioning energy consumption of the room when the curtains are open and the air conditioning energy consumption of the room when the curtains are closed. The building energy consumption difference is the sum of the lighting energy consumption difference and the air conditioning energy consumption difference; Room daylight weighted average daylight illuminance Less than the second set threshold At the same time, the room's lighting energy consumption is equal to the value when the curtains are closed and open. Otherwise, all values ​​are equal to zero; Room air conditioning energy consumption when curtains are closed ; Air conditioning energy consumption in the room when the curtains are open ; In the formula, The power density coefficient of the lighting system. For room area, For heat transfer in interior spaces, such as curtain systems and non-transparent building envelopes. , These represent the heat gain from solar radiation in the room when the curtains are closed and open, respectively. , These are the heat dissipation of the room's lighting system when the curtains are closed and open, respectively. This refers to the air conditioner's energy efficiency ratio.

[0007] It should be noted that in this invention, "curtain closed" means the curtain does not completely cover the exterior window, and "curtain open" means the curtain completely covers the exterior window. The first set threshold δ can be configured according to the building type and local standards.

[0008] Scenario 1: When the absolute value of the difference in lighting energy consumption is greater than the absolute value of the difference in air conditioning energy consumption, and the difference in building energy consumption is greater than a first set threshold, curtain shading leads to an increase in lighting energy consumption, and this increase exceeds the savings from air conditioning, ultimately causing the difference in building energy consumption to rise, and this value exceeds a threshold δ. The decision objective is to choose the curtain state that minimizes the increase in total energy consumption. Therefore, when the difference in lighting energy consumption ΔPlight is zero, it means that curtain shading makes lighting energy consumption the same as when there are no curtains, i.e., the difference in lighting energy consumption remains unchanged. At this time, the difference in building energy consumption ΔP depends on the difference in air conditioning energy consumption ΔPcl, i.e., ΔP = -ΔPcl. Therefore, opening the curtains can maximize the use of the shading effect of the curtains to reduce air conditioning energy consumption without increasing lighting energy consumption, thereby reducing building energy consumption, and the energy saving is at least |-ΔPcl|. When the difference in lighting energy consumption ΔPlight is not zero, it means that curtain shading increases lighting energy consumption, i.e., ΔPlight > 0. In buildings with high lighting power, ΔPlight > |-ΔPcl|, and any non-zero shading will result in ΔP > δ. To minimize building energy consumption, any increase in lighting energy consumption caused by shading should be completely avoided. Therefore, closing the curtains will make ΔPlight = 0 and ΔPcl = 0, thus making the building energy consumption difference ΔP = 0, and the energy saving will be at least ΔPlight.

[0009] When the condition that the absolute value of the lighting energy consumption difference is greater than the absolute value of the air conditioning energy consumption difference and the building energy consumption difference is greater than the first set threshold is not met, it should be further determined whether the absolute value of the building energy consumption difference is less than or equal to the first set threshold: Scenario 2: If not, it means that the energy savings from air conditioning exceed the increase in energy consumption from lighting. Curtain shading leads to energy savings from air conditioning, becoming the main contributor to building energy conservation. Although curtain shading may cause a certain increase in lighting energy consumption, since |-ΔPcl| is absolutely dominant in this scenario and much larger than ΔPlight, the total energy reduction ΔP when the curtains are open is the smallest among all possible states (i.e., the greatest energy saving), with energy savings of |-ΔPcl|.

[0010] Scenario 3: If so, it means the increase in electricity for lighting and the energy savings for air conditioning approximately offset each other. The difference in building energy consumption caused by curtain shading varies between positive and negative values ​​over time, and neither air conditioning nor lighting systems dominate building energy consumption. If the building energy consumption difference is less than zero, then curtain shading results in greater energy savings for air conditioning than for lighting, indicating that the net shading effect of curtains is energy-saving, but the energy savings are less than -δ. Therefore, choosing to open the curtains ensures this net energy saving benefit, with a minimum saving of |-ΔPcl|. If the building energy consumption difference is zero, then the increase in electricity for lighting and the energy savings for air conditioning completely offset each other, and the total energy consumption remains unchanged. Therefore, the instruction is to maintain the status quo to avoid unnecessary mechanical actions that generate operating energy consumption. If the building energy consumption difference is greater than zero, then curtain shading results in less energy savings for air conditioning than for lighting, indicating that the net shading effect of curtains is not energy-saving, but the increase in building energy consumption is less than δ. Therefore, choosing to close the curtains ensures that lighting energy consumption does not increase, thus reducing building energy consumption, with a minimum saving of ΔPlight.

[0011] As can be seen, this invention accurately assesses building energy consumption through multiple parameters, and comprehensively judges whether curtains are open or closed by the difference between lighting, air conditioning and building energy consumption, thereby ensuring minimal building energy consumption.

[0012] In some embodiments, the heat dissipation of the room's lighting system when the curtains are closed. Heat dissipation from the room's lighting system when the curtains are open The calculation methods include: ; ; In the formula, The overall convective heat transfer coefficient of the outer surface of the lamp tube is denoted as . This refers to the heat dissipation surface area of ​​the lamp tube. , These are the light tube temperatures when the curtains are closed and open, respectively. , These represent the indoor air temperature when the curtains are closed and open, respectively.

[0013] In some embodiments, the daylight-weighted average daylight illuminance of the room The calculation methods include: When the curtains are closed, ; When the curtains are opened, ; In the formula, For the glass area, The direct light transmittance of the window glass. The diffuse transmittance of the window glass. Direct sunlight illumination on the facade; For facade diffuse illuminance, ρ n The reflectance is the area-weighted average of indoor areas. This refers to the curtain's transmittance.

[0014] In some embodiments, the curtain system and the heat gain of the non-transparent enclosure structure are used for indoor heat transfer. The calculation methods include: ; In the formula, The overall heat transfer coefficient of the curtains. For the glass area, and The first The heat transfer coefficient and area of ​​the non-transparent building envelope.

[0015] In some embodiments, the amount of solar radiation heat gained in the room when the curtains are closed... The amount of heat absorbed by the room from solar radiation when the curtains are open. The calculation methods include: ; ; In the formula, For curtain transmittance, The direct light transmittance of the window glass. The diffuse transmittance of the window glass. The illuminance of direct solar radiation on the facade. This refers to the diffuse solar radiation illuminance on the facade. The area of ​​glass that receives direct radiation. This represents the area of ​​the glass.

[0016] In some embodiments, the above method further includes the following steps: With the goal of minimizing the difference between the calculated and measured building energy consumption, the gradient descent algorithm is used to optimize the overall heat transfer coefficient of the curtains and / or the power density coefficient of the lighting system. The calculated building energy consumption includes the calculated building energy consumption when the curtains are closed and when the curtains are open. The calculated building energy consumption when the curtains are closed is equal to the sum of the room's lighting energy consumption and air conditioning energy consumption when the curtains are closed. The calculated building energy consumption when the curtains are open is equal to the sum of the room's lighting energy consumption and air conditioning energy consumption when the curtains are open.

[0017] Therefore, this invention uses an optimization algorithm to dynamically optimize the correlation coefficient, thereby ensuring the accuracy of building energy consumption calculations.

[0018] In another aspect, a curtain control system is provided, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the above method.

[0019] In another aspect, a computer-readable storage medium is provided that stores a computer program or instructions thereon, which, when executed by a processor, implement the steps of the above-described method.

[0020] In another aspect, a computer program product is provided, including a computer program or instructions that, when executed by a processor, implement the steps of the above-described method.

[0021] This invention has at least the following technical effects or advantages: Firstly, it accurately assesses building energy consumption using multiple parameters and comprehensively determines whether curtains are open or closed based on the difference between lighting, air conditioning, and building energy consumption, thereby ensuring minimal building energy consumption. Secondly, this invention also dynamically optimizes the correlation coefficients through an optimization algorithm to ensure the accuracy of the calculated building energy consumption values. Attached Figure Description

[0022] Figure 1 This is a flowchart illustrating a curtain control method according to an embodiment of the present invention; Figure 2 A comparison chart showing the differences in air conditioning, lighting, and building energy consumption between existing curtain control methods and the curtain control method of this invention; Figure 3 A comparison chart of energy consumption and energy saving rate between existing curtain control methods and the curtain control method of the present invention; Figure 4 This is a graph showing the changes in air conditioning, lighting, building energy consumption, and energy saving rate over time in the curtain control method of the present invention. Figure 5 This graph shows the change in air conditioning and lighting energy consumption over time for rooms without curtains and for existing curtain control methods. Detailed Implementation

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] Example 1 This example uses an office on the 4th floor of a building, located in a hot-summer, cold-winter region, facing west. The room dimensions are 7.6m × 3.7m × 3.4m (L × W × H); it has two single-pane exterior windows, each with dimensions of 2.2m × 1.5m × 0.02m (L × W × H). g The room is equipped with an electric lighting system. Room area. A in =28.1m²; Indoor area weighted average reflectance ρ m =68%; window glass area A g =3.3m², heat transfer coefficient K g =2.1 W / m 2 K, direct transmittance ε g,dir =70%, Scattered Transmittance ε g,dif =75%; Curtain transmittance ε =38%, reflectivity ρ =57%, absorption rate α =5%; Air conditioner energy efficiency ratio COP =3.2, Indoor target illuminance E set =300Lx, first set threshold δ =5%, learning rate =0.01.

[0025] See Figure 1 According to the present invention, a curtain control method includes the following steps: S1. Determine whether the absolute value of the lighting energy consumption difference ΔPlight is greater than the air conditioning energy consumption difference Δ P cl If the absolute value of the building energy consumption difference ΔP is greater than the first set threshold, then if so, it is scenario one, proceed to step S2; otherwise, proceed to step S3. S2. Determine if the lighting energy consumption difference is zero; if yes, open the curtains; otherwise, close the curtains. S3. Determine whether the absolute value of the building energy consumption difference is less than or equal to the first set threshold. δ If yes, it is Scene 3, then proceed to step S4; if no, it is Scene 2, then open the curtains. S4. If the building energy consumption difference is less than zero, open the curtains; if the building energy consumption difference is equal to zero, keep the curtains in their current state; if the building energy consumption difference is greater than zero, close the curtains. Among them, the difference in lighting energy consumption is the difference between the lighting energy consumption of the room when the curtains are open and the lighting energy consumption of the room when the curtains are closed; The air conditioning energy consumption difference is the difference between the air conditioning energy consumption of the room when the curtains are open and the air conditioning energy consumption of the room when the curtains are closed. The building energy consumption difference is the sum of the lighting energy consumption difference and the air conditioning energy consumption difference; Room daylight weighted average daylight illuminance Less than the second set threshold At the same time, the room's lighting energy consumption is equal to the value when the curtains are closed and open. Otherwise, all values ​​are equal to zero; Room air conditioning energy consumption when curtains are closed ; Air conditioning energy consumption in the room when the curtains are open ; In the formula, The power density coefficient of the lighting system. For room area, For heat transfer in interior spaces, such as curtain systems and non-transparent building envelopes. , These represent the heat gain from solar radiation in the room when the curtains are closed and open, respectively. , These are the heat dissipation of the room's lighting system when the curtains are closed and open, respectively. This refers to the air conditioner's energy efficiency ratio.

[0026] Among them, the heat dissipation of the room's lighting system when the curtains are closed. Heat dissipation from the room's lighting system when the curtains are open Calculate using the following formula: ; ; In the formula, The overall convective heat transfer coefficient of the outer surface of the lamp tube is denoted as . This refers to the heat dissipation surface area of ​​the lamp tube. , These are the light tube temperatures when the curtains are closed and open, respectively. , These represent the indoor air temperature when the curtains are closed and open, respectively.

[0027] Room daylight weighted average daylight illuminance Calculate using the following formula: When the curtains are closed, ; When the curtains are opened, ; In the formula, For the glass area, The direct light transmittance of the window glass. The diffuse transmittance of the window glass. Direct sunlight illumination on the facade; For facade diffuse illuminance, ρ n The area-weighted average reflectance of the room. This refers to the curtain's transmittance.

[0028] Curtain systems and heat transfer in interior spaces through non-transparent building envelopes Calculate using the following formula: ; In the formula, The overall heat transfer coefficient of the curtains. For the glass area, and The first The heat transfer coefficient and area of ​​the non-transparent building envelope.

[0029] Heat gain from solar radiation in the room when the curtains are closed The amount of heat absorbed by the room from solar radiation when the curtains are open. Calculate using the following formula: ; ; In the formula, For curtain transmittance, The direct light transmittance of the window glass. The diffuse transmittance of the window glass. The illuminance of direct solar radiation on the facade. This refers to the diffuse solar radiation illuminance on the facade. The area of ​​glass that receives direct radiation. This represents the area of ​​the glass.

[0030] After calculation, the results show that |Δ P |< δ Therefore, a control command to open the curtains is generated.

[0031] Figure 2 This paper presents the calculation results of the difference in air conditioning, lighting, and building energy consumption on a typical summer day in an office in a hot-summer, cold-winter region, using the curtain control method of this invention (ECAM) and the traditional curtain control method (TCAM) under scenario 1 and conditions of varying curtain reflectivity. The calculation results show that in buildings with higher electric lighting power (Δ... P light >∣-ΔP cl | , Δ P light >0, and ΔP> δ ) ， As surface reflectivity increases, the energy consumption difference between ECAM and TCAM rooms shows a decreasing trend, while that between ECAM and TCAM rooms shows an increasing trend. ΔP for ECAM and TCAM rooms is less than and greater than 0, respectively, indicating energy savings and increased energy consumption. When ρ = 10% to 100%, the daily energy consumption changes for ECAM and TCAM rooms are -278.4 W, -528.6 W, -776.9 W, -1041.2 W, -950.6 W, -1143.9 W, -1337.3 W, -394.6 W, -446.0 W, -497.3 W and -278.4 W, 2367.5 W, 2085.3 W, 1806.9 W, 7337.9 W, 7059.5 W, 6781.0 W, 15216.7 W, 14938.3 W, 14659.9 W, respectively.

[0032] Figure 3 This paper presents the energy consumption and energy saving rate calculation results of the present invention's curtain control method (ECAM) and the traditional curtain control method (TCAM) on a typical summer day in an office in a hot-summer, cold-winter region under scenario 1 and conditions of varying curtain reflectivity. The calculation results show that in buildings with higher electric lighting power (Δ... P light >∣-Δ P cl | , Δ P light >0, and ΔP> δ ) ， As surface reflectivity increases, the building energy consumption of TCAM rooms is higher than that of ECAM rooms. When the curtain reflectivity ranges from 10% to 100%, the daily building energy savings of ECAM rooms compared to TCAM rooms are 0, 2886.1 W, 2842.2 W, 2818.1 W, 8248.5 W, 8153.4 W, 8058.3 W, 15541.4 W, 15304.3 W, and 15067.1 W, respectively, with energy savings rates of 0.0%, 6.3%, 6.3%, 6.3%, 16.3%, 16.2%, 16.1%, 26.6%, 26.3%, and 26.0%. Therefore, ECAM rooms are more energy-efficient than TCAM rooms.

[0033] Figure 4 The demonstration shows the results of applying the curtain control method (ECAM) of this invention to three adjacent offices in a hot-summer, cold-winter region under scenario 2, with a curtain reflectivity of 61%, on a typical summer day, showing the air conditioning, lighting, building energy consumption, and energy saving rate. Figure 5The results of air conditioning and lighting value calculations are presented for both curtain-less and curtain-based energy-saving control methods (TCAM). Comparison documents are also provided. Figure 4 and Figure 5 It can be seen that in buildings with lower lighting power, ECAM and TCAM are more energy-efficient than rooms without curtains. In offices, using ECAM throughout the day reduces building energy consumption by 223.6W and 204.1W respectively compared to rooms without curtains. Furthermore, ECAM rooms are more energy-efficient than TCAM rooms, saving 19.5W of building energy consumption per day, with a maximum energy saving rate of 1%.

[0034] As a preferred embodiment, the method further includes the following steps: With the goal of minimizing the difference between the calculated and measured building energy consumption, the gradient descent algorithm is used to optimize the overall heat transfer coefficient of the curtains and / or the power density coefficient of the lighting system. The calculated building energy consumption includes the calculated building energy consumption when the curtains are closed and when the curtains are open. The calculated building energy consumption when the curtains are closed is equal to the sum of the room's lighting energy consumption and air conditioning energy consumption when the curtains are closed. The calculated building energy consumption when the curtains are open is equal to the sum of the room's lighting energy consumption and air conditioning energy consumption when the curtains are open.

[0035] Specifically, the gradient descent algorithm is used to apply the specific physical parameter vector in the above formula. The overall heat transfer coefficient of the curtains and / or the power density coefficient of the lighting system are fine-tuned online, a process that can be viewed as a parameter calibration training for the physical model. The goal is to minimize the difference between the model-predicted energy consumption and the measured energy consumption.

[0036] The training data is not an offline historical dataset, but rather a continuous time-series data stream collected in real time. Each data sample contains the model's predicted building energy consumption under specific environmental conditions. and actual building energy consumption Parameter vector The initial values ​​are set based on the nominal parameters of the building design and curtain materials, providing a reasonable starting point for subsequent online optimization. The training process is a continuous online learning loop, with the following steps: (1) Data collection: During normal operation, the system continuously collects data. Energy consumption data pairs at each time step ( , ).

[0037] (2) Loss calculation: Calculate the current parameters according to the following formula. The following loss function values: In the formula, For the first The predicted building energy consumption value, W, at the next iteration; The actual building energy consumption value collected, in W; This represents the number of data samples.

[0038] (3) Gradient calculation and parameter update: Calculate the loss function relative to the parameters The gradient is calculated, and the parameters are updated according to the following formula: In the formula, The learning rate controls the speed at which the model updates.

[0039] (4) Iteration and Convergence: The above steps are executed cyclically. When the loss function... Once the loss value falls within the preset tolerance range, or the change in loss value becomes negligible after multiple iterations, the parameters can be considered to have converged, and the model has completed one round of calibration. The system will continuously monitor the loss value and restart the optimization process if the deviation increases.

[0040] It should be noted that the optimization of this model is limited to the parameter vector. The overall architecture, calculation formulas, and decision-making logic of the model remain fixed, ensuring the interpretability and integrity of the physical meaning of the model.

[0041] Through the above mechanism, the model can achieve self-learning and dynamic optimization based on real-time energy consumption feedback, automatically adjust its internal physical parameters, make the predictions more consistent with the actual building operation status, and thus improve control accuracy.

[0042] Example 2 A curtain control system includes a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method described above.

[0043] Example 3 A computer-readable storage medium having a computer program or instructions stored thereon, which, when executed by a processor, implement the steps of the above-described method.

[0044] Example 4 A computer program product, comprising a computer program or instructions, characterized in that the computer program / instructions, when executed by a processor, implement the steps of the above-described method.

[0045] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0046] Similarly, it should be understood that, in order to streamline this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0047] Those skilled in the art will understand that the modules, units, or groups of devices in the examples disclosed herein can be arranged in the device as described in this embodiment, or alternatively, can be located in one or more devices different from the device in this example. The modules in the foregoing examples can be combined into a single module or further divided into multiple sub-modules.

[0048] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or groups in the embodiments can be combined into a single module, unit, or group, and further, they can be divided into multiple sub-modules, sub-units, or sub-groups. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0049] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention and form different embodiments.

[0050] Furthermore, some of the embodiments described herein are methods or combinations of method elements that can be implemented by a processor of a computer system or by other means of performing the functions. Therefore, a processor having the necessary instructions for implementing the methods or method elements forms means for implementing the methods or method elements. Furthermore, the elements described herein in the apparatus embodiments are examples of means for implementing the functions performed by elements for the purposes of carrying out the invention.

[0051] The various techniques described herein can be implemented in combination with hardware or software, or a combination thereof. Thus, the methods and apparatus of the present invention, or certain aspects or portions thereof, can take the form of program code (i.e., instructions) embedded in a tangible medium, such as a floppy disk, CD-ROM, hard disk, or any other machine-readable storage medium, wherein when the program is loaded into and executed by a machine such as a computer, the machine becomes an apparatus for practicing the present invention.

[0052] When the program code is executed on a programmable computer, the computing device generally includes a processor, a processor-readable storage medium (including volatile and non-volatile memory and / or storage elements), at least one input device, and at least one output device. The memory is configured to store program code; the processor is configured to execute the method of the present invention according to instructions in the program code stored in the memory.

[0053] By way of example, and not limitation, computer-readable media include computer storage media and communication media. Computer storage media stores information such as computer-readable instructions, data structures, program modules, or other data. Communication media generally embodies computer-readable instructions, data structures, program modules, or other data in the form of modulated data signals such as carrier waves or other transmission mechanisms, and includes any information delivery medium. Any combination of the above is also included within the scope of computer-readable media.

[0054] As used herein, unless otherwise specified, the use of ordinal numbers such as “first,” “second,” “third,” etc., to describe ordinary objects merely indicates different instances of similar objects and is not intended to imply that the objects being described must have a given order in time, space, ordering, or any other manner.

[0055] Although the invention has been described with reference to a limited number of embodiments, those skilled in the art will understand from the foregoing description that other embodiments are conceivable within the scope of the invention described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and instructional purposes, and not for the purpose of interpreting or limiting the subject matter of the invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. The disclosure of the invention is illustrative and not restrictive, and the scope of the invention is defined by the appended claims.

[0056] Finally, it should be noted that this invention does not explain in detail the common knowledge recognized by those skilled in the art. The above description is only a specific embodiment of this invention and is not intended to limit this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A curtain control method, characterized in that, The method includes the following steps: S1. Determine whether the absolute value of the lighting energy consumption difference is greater than the absolute value of the air conditioning energy consumption difference and whether the building energy consumption difference is greater than the first set threshold; if yes, it is scenario one, proceed to step S2; if no, proceed to step S3. S2. Determine if the lighting energy consumption difference is zero; if yes, open the curtains; otherwise, close the curtains. S3. Determine whether the absolute value of the building energy consumption difference is less than or equal to the first set threshold; if yes, it is scenario three, then proceed to step S4; if no, it is scenario two, then open the curtains. S4. If the building energy consumption difference is less than zero, open the curtains; If the building energy consumption difference is zero, the curtains remain in their current state. If the building's energy consumption difference is greater than zero, close the curtains; Among them, the difference in lighting energy consumption is the difference between the lighting energy consumption of the room when the curtains are open and the lighting energy consumption of the room when the curtains are closed; The air conditioning energy consumption difference is the difference between the air conditioning energy consumption of the room when the curtains are open and the air conditioning energy consumption of the room when the curtains are closed. The building energy consumption difference is the sum of the lighting energy consumption difference and the air conditioning energy consumption difference; Room daylight weighted average daylight illuminance Less than the second set threshold At the same time, the room's lighting energy consumption is equal to the value when the curtains are closed and open. Otherwise, all values ​​are equal to zero; Room air conditioning energy consumption when curtains are closed ; Air conditioning energy consumption in the room when the curtains are open ; In the formula, The power density coefficient of the lighting system. For room area, For heat transfer in interior spaces, such as curtain systems and non-transparent building envelopes. , These represent the heat gain from solar radiation in the room when the curtains are closed and open, respectively. , These are the heat dissipation of the room's lighting system when the curtains are closed and open, respectively. This refers to the energy efficiency ratio of the air conditioner. The daylight-weighted average daylight illuminance of the room The calculation methods include: When the curtains are closed, ; When the curtains are opened, ; In the formula, For the glass area, The direct light transmittance of the window glass. The diffuse transmittance of the window glass. Direct sunlight illumination on the facade; For facade diffuse illuminance, ρ n The area-weighted average reflectance of the room. This refers to the curtain's transmittance.

2. The curtain control method according to claim 1, characterized in that: The heat dissipation of the room's lighting system when the curtains are closed. Heat dissipation from the room's lighting system when the curtains are open The calculation methods include: ； ； In the formula, The overall convective heat transfer coefficient of the outer surface of the lamp tube. This refers to the heat dissipation surface area of ​​the lamp tube. , These are the light tube temperatures when the curtains are closed and open, respectively. , These represent the indoor air temperature when the curtains are closed and open, respectively.

3. The curtain control method according to claim 1 or 2, characterized in that: The indoor heat transfer and heat gain of the curtain system and non-transparent enclosure structure The calculation methods include: ； In the formula, The overall heat transfer coefficient of the curtains. For the glass area, and The first The heat transfer coefficient and area of ​​the non-transparent building envelope.

4. The curtain control method according to claim 1 or 2, characterized in that: The room receives heat from solar radiation when the curtains are closed. The amount of heat absorbed by the room from solar radiation when the curtains are open. The calculation methods include: ； ； In the formula, For curtain transmittance, The direct light transmittance of the window glass. The diffuse transmittance of the window glass. The illuminance of direct solar radiation on the facade. This refers to the diffuse solar radiation illuminance on the facade. The area of ​​glass that receives direct radiation. This represents the area of ​​the glass.

5. The curtain control method according to claim 3, characterized in that, It also includes the following steps: With the goal of minimizing the difference between the calculated and measured building energy consumption, the gradient descent algorithm is used to optimize the overall heat transfer coefficient of the curtains and / or the power density coefficient of the lighting system. The calculated building energy consumption includes the calculated building energy consumption when the curtains are closed and when the curtains are open. The calculated building energy consumption when the curtains are closed is equal to the sum of the room's lighting energy consumption and air conditioning energy consumption when the curtains are closed. The calculated building energy consumption when the curtains are open is equal to the sum of the room's lighting energy consumption and air conditioning energy consumption when the curtains are open.

6. A curtain control system, comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the method according to any one of claims 1-5.

7. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the method according to any one of claims 1-5.

8. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the method according to any one of claims 1-5.

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