A solar-powered automatic control curtain suitable for high-altitude areas and its control method

Abstract

This invention belongs to the field of solar energy technology and relates to a solar-powered automatic control curtain suitable for high-altitude areas and its control method. By combining an indoor temperature sensor, a radiation meter, and a processor, the processor automatically controls the curtain to open when the indoor temperature is too low, allowing sunlight to enter and raising the indoor temperature. When the indoor temperature is too high, the processor automatically controls the curtain to close, preventing sunlight from entering and lowering the indoor temperature. Furthermore, this invention can adjust the opening angle of the curtain in real time based on the location, altitude, solar radiation intensity, and comfort level of the people inside, thereby fine-tuning the light transmittance of the curtain. Therefore, this invention fully considers various factors such as the climate conditions, solar radiation intensity, and comfort level of people inside high-altitude areas, and through automatic control, it can simultaneously meet people's needs for automated and comfortable indoor temperature control in high-altitude areas.

Description

Technical Field

[0001] This invention belongs to the field of solar energy technology and relates to a solar-powered automatic control curtain suitable for high-altitude areas and its control method. Background Technology

[0002] Long hours of sunshine and high solar radiation intensity in high-altitude areas significantly impact indoor environments and the thermal comfort of their inhabitants. This problem is exacerbated in high-altitude regions with high solar radiation intensity. Therefore, addressing the impact of solar radiation on indoor thermal comfort is of paramount importance.

[0003] To address this issue, existing methods typically use motors to control the opening and closing of curtains. However, this control requires manual intervention from occupants when they subjectively feel the temperature is too high, failing to meet the demand for automated and comfortable indoor temperature control in high-altitude areas. Therefore, an automated and comfortable curtain design for high-altitude regions is needed to solve this technical problem. Summary of the Invention

[0004] The technical solution adopted by the present invention to solve the technical problem is: a solar-powered automatic control curtain suitable for high-altitude areas, comprising: a solar power panel, an energy storage unit, a motor, a curtain, an indoor temperature sensor, a radiation measuring instrument, and a processor. The solar power panel is used to convert solar energy into electrical energy, the energy storage unit is used to store electrical energy, the motor is used to drive the curtain to open or close, the indoor temperature sensor is used to monitor the indoor temperature in real time, the radiation measuring instrument is used to monitor the outdoor solar radiation intensity in real time, and the processor is used to receive feedback information from the indoor temperature sensor and the radiation measuring instrument and to control the start and stop of the motor.

[0005] The solar panel is electrically connected to the energy storage unit, which is then electrically connected to the motor. The motor mechanically drives the curtain drive mechanism. The motor, indoor temperature sensor, and radiation meter are electrically connected to the processor, which is connected to a GPS module. The processor adjusts the curtain's opening and closing based on feedback from the indoor temperature sensor and radiation meter. When the indoor temperature is lower than the target temperature, the curtain is opened to allow sunlight to enter and warm the room. When the indoor temperature is higher than the target temperature, the curtain is closed to block sunlight from entering and cool the room.

[0006] Preferably, the curtain is a Venetian blind, consisting of multiple horizontally arranged slats from top to bottom. A horizontal rod is provided at the top of the curtain and fixed to the upper edge of the window. Vertical rods are provided on both sides of the curtain and are suspended below the horizontal rod. The two ends of the slats are rotatably connected to the vertical rods at both ends via universal couplings. At least one end of the slats is connected to a traction rod, which drives the slats to rotate around the universal coupling shafts at both ends on the same horizontal line. A motor provides power to the traction rods through gears. Using Venetian blinds allows for better control of the light transmittance of the curtains, enabling fine-tuning of the external sunlight exposure as needed.

[0007] More preferably, the motor is a stepper motor, and there are two traction rods located at the horizontal ends of the blade. There are also two motors located at the ends of the transverse rod, and the two motors synchronously drive the two traction rods respectively.

[0008] Preferably, the curtain is equipped with a body temperature measurement system, which is used to calculate the body temperature of the human body in the room in real time. The body temperature measurement system is electrically connected to the processor. The body temperature measurement system adopts existing technology and is performed as follows: acquiring the air temperature of the current environment; acquiring the wind speed of the current environment; if the air temperature is greater than 30°C, calculating the wind chill cooling effect value, the calculation formula is:

[0009] ΔT=3.513×ln(v+1)×T-0.3614×ln(v+1) 2 ×T-0.15789ln(v+1)×T 2 +0.01094×ln(v+1) 2 ×T 2 +0.001574×ln(v+1)×T 3 Where is the air temperature in °C, V is the wind speed in m / s, and AT is the wind chill effect in °C; the perceived temperature is calculated based on the air temperature and the wind chill effect, Te = T - AT, where Te is the perceived temperature in °C; this method can calculate the variation pattern under different temperature and wind speed ranges, and accurately calculate the perceived temperature based on the ambient air temperature and wind speed.

[0010] Preferably, the curtain is equipped with a generator, which is electrically connected to the motor and the processor respectively. The generator is used to provide power to the motor to open or close the curtain when the energy storage unit is depleted.

[0011] Preferably, the curtain is equipped with a control panel, which has a display screen and input buttons. The control panel is electrically connected to the processor. The display screen and input buttons are used for manual input of the highest and lowest indoor temperatures to meet the needs of different people for different indoor temperatures, thus making the automatic curtain more widely applicable.

[0012] This invention also discloses a control method suitable for solar-powered automatic control curtains in high-altitude areas. The control method is used for the aforementioned automatic control curtains and includes:

[0013] Step S1: Start the automatic control curtains. The GPS module connected to the processor is powered on and performs latitude and longitude positioning and altitude measurement.

[0014] Step S2: The processor calculates the solar latitude of the location of the curtains according to formula ①;

[0015]

[0016] In the formula, n represents the day of the year;

[0017] The processor calculates the solar altitude angle at the location according to formula ②;

[0018] h=arcsin(sinφsinδ+cosφcosδcost) ②

[0019] In the formula, h represents the solar altitude angle, Φ represents the latitude of the location of the curtain (positive for north latitude and negative for south latitude), and t represents the time angle.

[0020] The processor calculates the irradiance under sunny conditions at the location according to formula ③;

[0021]

[0022] In the formula, hg represents altitude;

[0023] Step S3: Initially set an indoor temperature range for the processor, which includes the preset maximum indoor temperature and the preset minimum indoor temperature;

[0024] Step S4: When the indoor temperature detected in real time by the indoor temperature sensor is higher than the preset maximum indoor temperature, the processor starts the motor to close the curtains. After the curtains are completely closed, the motor stops.

[0025] Step S5: When the indoor temperature detected in real time by the indoor temperature sensor is lower than the preset minimum indoor temperature, the processor starts the motor to open the curtains. The processor controls the angle at which the motor opens the curtains according to the solar altitude angle and irradiance calculated in step S2. The motor stops after the curtains are fully opened at the angle given by the processor.

[0026] Step S6: The indoor temperature sensor detects the indoor temperature in real time and repeats step S4 or step S5 according to the triggering conditions.

[0027] Preferably, in step S2, the time angle t is taken from sunrise to sunset at the location of the curtain, and the range of the time angle t is from -90° to +90°. The 180° range of the time angle t is divided equally among the hourly time periods.

[0028] Preferably, the relationship between radiation intensity and temperature in step S2 is based on formula ④;

[0029] E b =σ b T 4 ④

[0030] Where: σ b =5.67×10 -8 W / (m 2 ·K 4 E b This represents radiation intensity, measured in W / m². 2 T b This indicates temperature, expressed in degrees Celsius.

[0031] The beneficial effects of this invention are:

[0032] This invention combines an indoor temperature sensor, a radiation meter, and a processor. When the indoor temperature is too low, the processor automatically controls the curtains to open, allowing sunlight to enter and raise the temperature. Conversely, when the indoor temperature is too high, the processor automatically controls the curtains to close, preventing sunlight from entering and lowering the temperature. Furthermore, this invention can adjust the curtain's opening angle in real time based on its location, altitude, solar radiation intensity, and the comfort level of the occupants, thus fine-tuning the curtain's light transmittance. Therefore, this invention fully considers factors such as the climate conditions of high-altitude areas, solar radiation intensity, and the comfort level of the occupants. Through the combined action of the temperature sensor, energy storage unit, and control device, it can automatically improve the comfort of the occupants while reducing energy consumption. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a solar-powered automatic control curtain suitable for high-altitude areas and its control method.

[0034] Figure 2 It is a diagram of the curtain structure;

[0035] Figure 3 This is a schematic diagram of the curtain's fixing structure.

[0036] The components include: 1. Solar panel; 2. Energy storage unit; 3. Motor; 4. Curtain; 5. Indoor temperature sensor; 6. Radiation measuring instrument; 7. Processor; 8. Blade; 9. Horizontal bar; 10. Vertical bar; 11. Universal coupling; 12. Traction bar; 13. Gear; 14. Body temperature measurement system; 15. Generator; 16. Display screen; 17. Fixing plate; 18. Fixing base; 19. Fixing hole. Detailed Implementation

[0037] The related technologies of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] refer to Figures 1-3 A solar-powered automatic control curtain suitable for high-altitude areas includes: a solar power panel 1, an energy storage unit 2, a motor 3, a curtain 4, an indoor temperature sensor 5, a radiation measuring instrument 6, and a processor 7. The solar power panel 1 is used to convert solar energy into electrical energy, the energy storage unit 2 is used to store electrical energy, the motor 3 is used to drive the curtain 4 to open or close, the indoor temperature sensor 5 is used to monitor the indoor temperature in real time, the radiation measuring instrument 6 is used to monitor the outdoor solar radiation intensity in real time, and the processor 7 is used to receive feedback information from the indoor temperature sensor 5 and the radiation measuring instrument 6 and to control the start and stop of the motor 3.

[0039] Solar panel 1 is electrically connected to energy storage unit 2, energy storage unit 2 is electrically connected to motor 3, motor 3 is mechanically connected to the drive device of curtain 4, motor 3, indoor temperature sensor 5, and radiation meter 6 are electrically connected to processor 7, processor 7 is connected to GPS module; processor 7 adjusts the closing of curtain 4 according to the information fed back by indoor temperature sensor 5 and radiation meter 6. When the indoor temperature is lower than the target temperature, curtain 4 is opened to allow outside sunlight to shine into the room to raise the temperature, and when the indoor temperature is higher than the target temperature, curtain 4 is closed to block outside sunlight from shining into the room to lower the temperature.

[0040] Furthermore, the curtain 4 is a Venetian blind, consisting of multiple horizontally arranged slats 8 arranged from top to bottom. A horizontal rod 9 is located above the curtain 4 and fixed to the upper edge of the window. Vertical rods 10 are located on both sides of the curtain 4, suspended below the horizontal rod 9. The two ends of the slats 8 are rotatably connected to the vertical rods 10 via universal couplings 11. At least one end of each slat 8 is connected to a traction rod 12, which drives the slats 8 to rotate around the universal couplings 11 on the same horizontal line. The motor 3 provides power to the traction rod 12 via gears 13. Using Venetian blinds allows for better control of the light transmittance of the curtain 4, preventing outside sunlight from entering. The light intensity can be finely adjusted as needed; the fixing structure of the curtain 4 includes a fixing plate 17, a horizontal rod 9, and a fixing seat 18. The fixing seat 18 is used to fix the horizontal rod 9. The horizontal rod 9 is located inside the fixing seat 18. Fixing blocks are connected to both sides of the fixing seat 18. The two ends of the fixing blocks on both sides are connected to the upright rods 10. The universal coupling 11 connects the upright rods 10 on both sides and the connecting plate of the Venetian blind 4. The upper and lower ends of the fixing plate 17 are respectively provided with fixing holes 19. The horizontal rod 9 passes through the fixing blocks and the fixing seat 18 and extends to the fixing groove opened on the surface of the curtain frame, thereby further fixing the curtain frame so that the curtain frame will not shake.

[0041] Furthermore, the motor 3 is a stepper motor, and there are two traction rods 12, which are located at the horizontal ends of the blade 8. There are two motors 3, which are located at the ends of the transverse rod 9. The two motors 3 drive the two traction rods 12 synchronously.

[0042] Furthermore, the curtain 4 is equipped with a body temperature measurement system 14, which is used to calculate the body temperature of the human body in the room in real time. The body temperature measurement system 14 is electrically connected to the processor 7. The body temperature measurement system 14 adopts existing technology and performs the following operations: acquiring the air temperature of the current environment; acquiring the wind speed of the current environment; if the air temperature is greater than 30°C, calculating the wind chill cooling effect value, the calculation formula is:

[0043] ΔT=3.513×ln(v+1)×T-0.3614×ln(v+1) 2 ×T-0.15789ln(v+1)×T 2 +0.01094×ln(v+1) 2 ×T 2 +0.001574×ln(v+1)×T 3Where is the air temperature in °C, V is the wind speed in m / s, and AT is the wind chill effect in °C; the perceived temperature is calculated based on the air temperature and the wind chill effect, Te = T - AT, where Te is the perceived temperature in °C; this method can calculate the variation pattern under different temperature and wind speed ranges, and accurately calculate the perceived temperature based on the ambient air temperature and wind speed.

[0044] Furthermore, the curtain 4 is equipped with a generator 15, which is electrically connected to the motor 3 and the processor 7 respectively. The generator 15 is used to provide power to the motor 3 to open or close the curtain 4 when the energy storage unit 2 is depleted.

[0045] Furthermore, the curtain 4 is equipped with a control panel, which has a display screen 16 and input buttons. The control panel is electrically connected to the processor 7. The display screen 16 and input buttons are used for manual input of the highest and lowest values ​​of the indoor temperature to meet the needs of different people for different indoor temperatures, making the automatic curtain more widely applicable.

[0046] This invention also discloses a control method suitable for solar-powered automatic control curtains in high-altitude areas. The control method is used for the aforementioned automatic control curtains and includes:

[0047] Step S1: Start the automatic control curtains. The GPS module connected to the processor 7 is powered on and performs latitude and longitude positioning and altitude measurement.

[0048] Step S2: Processor 7 calculates the solar latitude of the location of the curtain according to formula ①;

[0049]

[0050] In the formula, n represents the day of the year;

[0051] Processor 7 calculates the solar altitude angle at the location according to formula ②;

[0052] h=arcsin(sinφsinδ+cosφcosδcost) ②

[0053] In the formula, h represents the solar altitude angle, Φ represents the latitude of the location of the curtain (positive for north latitude and negative for south latitude), and t represents the time angle.

[0054] Processor 7 calculates the irradiance under sunny conditions at the location according to formula ③;

[0055]

[0056] In the formula, hg represents altitude;

[0057] Step S3: Initially set an indoor temperature range for processor 7, which includes the preset maximum indoor temperature and the preset minimum indoor temperature;

[0058] Step S4: When the indoor temperature detected in real time by the indoor temperature sensor 5 is higher than the preset maximum indoor temperature, the processor 7 starts the motor 3 to close the curtain 4. After the curtain 4 is completely closed, the motor 3 stops.

[0059] Step S5: When the indoor temperature detected in real time by the indoor temperature sensor 5 is lower than the preset minimum indoor temperature, the processor 7 starts the motor 3 to open the curtain 4. The processor 7 controls the angle at which the motor 3 opens the curtain 4 according to the solar altitude angle and irradiance calculated in step S2. After the curtain 4 is fully opened according to the angle given by the processor 7, the motor 3 stops.

[0060] Step S6: Indoor temperature sensor 5 detects the indoor temperature in real time and repeats step S4 or step S5 according to the triggering conditions.

[0061] Furthermore, in step S2, the time angle t is taken from sunrise to sunset at the location of curtain 4, and the range of the time angle t is from -90° to +90°. The time angle t is taken by dividing the 180° range of the time angle t evenly according to the hourly time period.

[0062] Furthermore, the relationship between radiation intensity and temperature in step S2 is based on formula ④;

[0063] E b =σ b T 4 ④

[0064] Where: σ b =5.67×10 -8 W / (m 2 ·K 4 E b This represents radiation intensity, measured in W / m². 2 T b This indicates temperature, expressed in degrees Celsius.

[0065] Example

[0066] This example uses Lhasa as an example. Lhasa's latitude is 29°24′, longitude is 91°4′, and altitude is 3650m.

[0067] Assuming the room temperature is at a stable value, the relationship between the window's inner surface temperature and radiative heat transfer can be obtained based on the temperature of the window's inner surface and the radiative heat transfer. Then, based on the radiative heat transfer under comfortable conditions, a radiative heat transfer under comfortable conditions can be obtained, and the window's inner surface temperature under comfortable conditions can be obtained for comparison. Finally, based on the relationship between the window's inner surface temperature and the outdoor radiation intensity, the window's inner surface temperature can be adjusted.

[0068] according to

[0069] Latitude of the Sun

[0070] Where n represents the day of the year.

[0071] Taking June 1st in summer as an example, then n represents the 152nd day of the year.

[0072] Substituting into equation ①, we get the latitude of the sun as δ = 23.07.

[0073] Then according to

[0074] Solar altitude angle h = arcsin(sinφsinδ + cosφcosδcos) ②

[0075] In the formula, h represents the solar altitude angle, in degrees.

[0076] Φ represents the latitude of a certain region, with positive values ​​for north latitude and negative values ​​for south latitude;

[0077] δ represents the latitude of the sun, which has been calculated in equation 1-2 above.

[0078] t represents the time angle, and the values ​​of t are shown in Table 1 below:

[0079]

[0080] Table 1

[0081] Lhasa's latitude is 29°24′. According to equation ②, the latitude of the sun is δ=23.07. The time is taken as AM10:00, so t is taken as -30. Substituting into equation ③, the solar altitude angle is obtained as 62.62°.

[0082] Under clear weather conditions, the functional relationship between irradiance and solar altitude and altitude is as follows:

[0083]

[0084] In the formula, h represents the solar altitude angle, in degrees.

[0085] hg represents altitude, m

[0086] The altitude of Lhasa is 3650m, so the calculated irradiance is 1254.66W / m². 2 .

[0087] The ideal indoor temperature for people is between 26-28℃, with an average temperature of 27℃.

[0088] Based on the relationship between radiation intensity and temperature, i.e.

[0089] E b =σ b T 4 ④

[0090] Where σ b =5.67×10 -8 W / (m 2 ·K 4 )

[0091] E b —Radiation intensity, W / m 2 ,

[0092] T b —Temperature, °C

[0093] Substituting the temperature of 26℃ into the equation, we get E. b 453.18W / m 2 .

[0094] The opening degree of the louvers is defined as the angle between the outer normal direction of the louvers and the horizontal direction, with a range of 0° to 180°. 0° and 180° correspond to the louvers being closed, while 90° corresponds to the louvers being fully open.

[0095] When the radiation intensity is 1254.66 W / m², the louvers are fully open. At this time, the opening degree of the louvers is 90°. Therefore, when the radiation intensity is 453.18 W / m², the opening degree of the louvers is...

[0096]

[0097] The calculated θ is 32.5°, which corresponds to a radiation intensity of 453.18 W / m². 2 At that time, the louvers opened to a degree of 32.5°.

[0098] In summary, this invention combines an indoor temperature sensor, a radiation meter, and a processor. When the indoor temperature is too low, the processor automatically controls the curtains to open, allowing sunlight to enter and raise the indoor temperature. When the indoor temperature is too high, the processor automatically controls the curtains to close, preventing sunlight from entering and lowering the indoor temperature. Furthermore, this invention can adjust the opening angle of the curtains in real time based on their location, altitude, solar radiation intensity, and the comfort level of the occupants, thus fine-tuning the light transmittance. Therefore, this invention fully considers factors such as the climate conditions of high-altitude areas, solar radiation intensity, and the comfort level of the occupants. Through the combined action of the temperature sensor, energy storage unit, and control device, it can automatically improve the comfort of occupants while reducing energy consumption, thus possessing broad application prospects.

[0099] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A solar-powered automatic control curtain suitable for high-altitude areas, characterized in that, include: The solar power generation panel (1), energy storage unit (2), motor (3), curtain (4), indoor temperature sensor (5), radiation measuring instrument (6), and processor (7) are used to convert solar energy into electrical energy, the energy storage unit (2) is used to store electrical energy, the motor (3) is used to drive the curtain (4) to open or close, the indoor temperature sensor (5) is used to monitor the indoor temperature in real time, the radiation measuring instrument (6) is used to monitor the outdoor solar radiation intensity in real time, and the processor (7) is used to receive feedback information from the indoor temperature sensor (5) and the radiation measuring instrument (6) and to control the start and stop of the motor (3). The solar panel (1) is electrically connected to the energy storage unit (2), the energy storage unit (2) is electrically connected to the motor (3), the motor (3) is mechanically connected to the drive device of the curtain (4), the motor (3), the indoor temperature sensor (5), and the radiation measuring instrument (6) are electrically connected to the processor (7), the processor (7) is connected to a GPS module; the curtain (4) is a Venetian blind, the curtain (4) is composed of multiple horizontally arranged slats (8) from top to bottom, the curtain (4) is provided with a horizontal rod (9) above the curtain (4), the horizontal rod (9) is provided with a horizontal rod (9) above the curtain (4) The guide rod (9) is fixed at the upper edge of the window. The curtain (4) has upright rods (10) on both sides. The upright rods (10) are suspended below the horizontal rod (9). The two ends of the blade (8) are rotatably connected to the upright rods (10) at both ends through universal couplings (11). At least one end of the blade (8) is connected to a traction rod (12). The traction rod (12) drives the blade (8) to rotate around the universal couplings (11) at both ends on the same horizontal line. The motor (3) provides power to the traction rod (12) through gears (13). The motor (3) is a stepper motor. There are two traction rods (12). The traction rods (12) are located at the horizontal ends of the blade (8). There are two motors (3). The motors (3) are located at the ends of the transverse rod (9). The two motors (3) drive the two traction rods (12) synchronously. The curtain (4) is equipped with a body temperature measurement system (14), which is used to calculate the body temperature of the human body in the room in real time. The body temperature measurement system (14) is electrically connected to the processor (7).

2. The solar-powered automatic control curtain suitable for high-altitude areas according to claim 1, characterized in that, The curtain (4) is equipped with a generator (15), which is electrically connected to the motor (3) and the processor (7).

3. A solar-powered automatic control curtain suitable for high-altitude areas according to claim 1, characterized in that, The curtain (4) is equipped with a control panel, which has a display screen (16) and input buttons. The control panel is electrically connected to the processor (7).

4. A control method suitable for solar-powered automatic control curtains in high-altitude areas, the control method being used for the automatic control curtains according to any one of claims 1 to 3, the control method comprising: Step S1: Start the automatic control curtains, the GPS module connected to the processor (7) is powered on and performs latitude and longitude positioning and altitude measurement; Step S2: The processor (7) calculates the solar latitude of the location of the curtain according to formula ①; In the formula, n represents the day of the year; The processor (7) calculates the solar altitude angle at the location according to formula ②; h=arcsin(sinφsinδ+cosφcosδcost) ② In the formula, h represents the solar altitude angle, Φ represents the latitude of the location of the curtain (positive for north latitude and negative for south latitude), and t represents the time angle. The processor (7) calculates the irradiance under clear weather conditions at the location according to formula ③; In the formula, hg represents altitude; Step S3: Initially set an indoor temperature range for the processor (7), the indoor temperature range including the preset maximum indoor temperature and the preset minimum indoor temperature; Step S4: When the indoor temperature detected in real time by the indoor temperature sensor (5) is higher than the preset maximum indoor temperature, the processor (7) starts the motor (3) to close the curtain (4). After the curtain (4) is completely closed, the motor (3) stops. Step S5: When the indoor temperature detected in real time by the indoor temperature sensor (5) is lower than the preset minimum indoor temperature, the processor (7) starts the motor (3) to open the curtain (4). The processor (7) controls the angle at which the motor (3) opens the curtain (4) according to the solar altitude angle and irradiance calculated in step S2. After the curtain (4) is fully opened according to the angle given by the processor (7), the motor (3) stops. Step S6: The indoor temperature sensor (5) detects the indoor temperature in real time and repeats step S4 or step S5 according to the triggering conditions.

5. The control method for a solar-powered automatic control curtain suitable for high-altitude areas according to claim 4, characterized in that, The time angle t in step S2 is taken from sunrise to sunset at the location of the curtain (4). The time angle t ranges from -90° to +90°. The time angle t is taken in a 180° range divided equally among the hourly time periods.

6. The control method for a solar-powered automatic control curtain suitable for high-altitude areas according to claim 4, characterized in that, The relationship between radiation intensity and temperature in step S2 is based on formula ④; AND b =σ b T 4 4 In the formula: σ b =5.67×10 -8 W / (m 2 ·K 4 E b This represents radiation intensity, measured in W / m². 2 T represents temperature, and the unit is degrees Celsius.

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