Adjustable double-layer lighting and sun-shading system

Abstract

The invention relates to an adjustable double-layer lighting and sun-shading system, which belongs to the technical field of sun-shading equipment, and comprises a detection module, a control module, a sun-shading module and a separation beam, the separation beam is used for dividing the glass curtain wall into an upper side and a lower side, the sunshade module comprises a roller shutter and a sunshade plate, the control module is used for controlling opening and closing of the sunshade plate and the separation beam, the roller shutter shields the lower side of the glass curtain wall when in a closed state, and the sunshade plate shields the upper side of the glass curtain wall when in a closed state; the detection module is used for detecting the light intensity of the indoor and outdoor area and the indoor inner area and uploading the light intensity to the control module, the control module instructs the lower part to be closed when judging that the light intensity of the indoor and outdoor area exceeds a threshold value, judges whether the light intensity of the outdoor inner area exceeds the threshold value, instructs the upper part to be closed when judging that the light intensity of the indoor and outdoor area exceeds the threshold value, and instructs the lower part to be closed when judging that the light intensity of the outdoor inner area does not exceed the threshold value; instructing the upper part to open to a specified angle; the control module adjusts the angle of the sun shield according to the light intensity difference between the indoor and outdoor area and the indoor area.

Description

Technical Field

[0001] The present invention belongs to the technical field of sunshade devices, and particularly relates to an adjustable double-layer daylighting sunshade system. Background Art

[0002] With the increasing demand for the aesthetic appearance of modern buildings, more and more buildings use glass curtain walls as the exterior walls. When the solar irradiance is high in summer, sunlight passes through the glass curtain wall and shines into the room, causing discomfort to the people inside.

[0003] Generally, the sunshade structure is relatively simple. For this reason, Chinese Patent CN109373280B discloses an energy-saving building natural daylighting and decoration control system and adjustment method. The system includes a solar power generation unit, an intelligent control system, and an indoor illuminance control system. The solar power generation unit is arranged indoors and rotatably connected along the window, forming an integrated structure of solar photovoltaic power generation and building sunshade. The solar power generation unit includes a first-stage solar power generation unit and a second-stage solar power generation unit that are rotatably connected. The indoor illuminance control system is used to control the illuminance indoors. The intelligent control system is used to control the solar power generation unit and the indoor illuminance control system, and store the excess electric energy. It also includes the adjustment method of the system, which can realize the use of four modes: solar power generation, high-efficiency solar power generation, reflecting and guiding light, and building heat preservation, and realize the combination of indoor natural daylighting and decorative daylighting. The solar energy utilization rate can be increased by 40% - 50%, the building energy conservation can be increased by 35% - 45%, and the service life of the lamps can be extended by 2 - 3 times.

[0004] However, in the above structure, although the reflection structure in the sunshade structure is used to improve the sunshade effect and solar lighting is used to reduce energy consumption, in the above structure, it is impossible to flexibly adjust the utilization degree of the reflected light according to the actual indoor needs, which may lead to uneven indoor illuminance. Therefore, an adjustable double-layer daylighting sunshade system that can adjust the light intensity of the reflected light according to the actual indoor needs and has uniform indoor illuminance is needed. Summary of the Invention

[0005] To solve the above problems existing in the prior art, the present invention provides an adjustable double-layer daylighting sunshade system, which has the characteristics of being able to adjust the light intensity of the reflected light according to the actual indoor needs and having uniform indoor illuminance.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] An adjustable double-layer daylighting sunshade system includes a detection module, a control module, a sunshade module, and a partition beam;

[0008] The partition beam is arranged inside the glass curtain wall and is used to divide the glass curtain wall into an upper side and a lower side. The sunshade module is arranged at the partition beam. The sunshade module includes a roller shutter and a sunshade board. The roller shutter is arranged under the partition beam, and the sunshade board is hinged to the upper side of the partition beam. The control module is electrically connected to the sunshade board and the roller shutter respectively and is used to control the opening and closing of the sunshade board and the partition beam. When the roller shutter is in the closed state, it shields the lower side of the glass curtain wall. When the roller shutter is in the open state, it is retracted. When the sunshade board is in the closed state, it is parallel to the glass curtain wall and shields the upper side of the glass curtain wall. When the sunshade board is in the open state, it forms an acute angle or a right angle with the upper side of the glass curtain wall;

[0009] The detection module is used to detect the light intensities of the indoor-outdoor area and the indoor-indoor area and upload them to the control module. The control module judges whether the light intensities of the indoor-outdoor area and the indoor-indoor area exceed the threshold value;

[0010] When the light intensity of the indoor-outdoor area exceeds the threshold value, the control module instructs the lower part to close, and judges whether the light intensity of the indoor-indoor area exceeds the threshold value. When the judgment result is yes, it instructs the upper part to close. When the judgment result is no, it instructs the upper part to open to a specified angle;

[0011] When the control module instructs the upper part to open to a specified angle, it adjusts the angle of the sunshade board according to the light intensity difference between the indoor-outdoor area and the indoor-indoor area.

[0012] As a preferred technical solution of the present invention, a light difference threshold is pre-input into the control module. When the light intensity difference between the indoor-outdoor area and the indoor-indoor area is lower than the light difference threshold, the control module instructs the sunshade board to increase the included angle with the glass curtain wall. When the light intensity difference between the indoor-outdoor area and the indoor-indoor area is higher than the light difference threshold, the control module instructs the sunshade board to decrease the included angle with the glass curtain wall.

[0013] As a preferred technical solution of the present invention, the control module instructs the sunshade board to decrease the included angle with the glass curtain wall and adjust it to a, where a = (L1 - L2) / L1 × 45, where L1 is the light intensity of the indoor-outdoor area and L2 is the light intensity of the indoor-indoor area.

[0014] As a preferred technical solution of the present invention, the detection module includes an indoor-indoor area detector and an indoor-outdoor area detector. The indoor-indoor area detector is used to detect the light intensity of the indoor-indoor area and upload it to the control module. The indoor-outdoor area detector is used to detect the light intensity of the indoor-outdoor area and upload it to the control module.

[0015] As a preferred technical solution of the present invention, the indoor-indoor area detector and the indoor-outdoor area detector include several light intensity detectors. The light intensities of the indoor-outdoor area and the indoor-indoor area both include several light intensity data. The control module judges whether the variance of several light intensity data in the light intensities of the indoor-outdoor area and the indoor-indoor area exceeds the variance threshold. When the judgment result is yes, it reduces the average light intensity of the corresponding area.

[0016] As a preferred technical solution of the present invention, the control module is used to correct the light intensity L1 in the indoor and outdoor areas to L1×A1, and correct the light intensity L2 in the indoor inner area to L2×A1, where A1 = 1+(F0 - F1) / F0, A2 = 1+(F0 - F2) / F0, F0≤F1≤1.5F0, F0≤F2≤1.5F0.

[0017] As a preferred technical solution of the present invention, it further includes a control panel, and the control panel is used to input the values of F0 and the threshold.

[0018] The beneficial effects of the present invention are as follows:

[0019] (1) By adjusting the angle of the sunshade according to the light intensity difference between the indoor and outdoor areas and the indoor inner area, the reflected light intensity is adjusted according to the actual indoor needs, and the uniformity of the indoor light intensity is improved;

[0020] (2) When the light intensity difference between the indoor and outdoor areas and the indoor inner area is lower than the light difference threshold, the control module instructs the sunshade to increase the angle with the glass curtain wall. When the light intensity difference between the indoor and outdoor areas and the indoor inner area is higher than the light difference threshold, the control module instructs the sunshade to reduce the angle with the glass curtain wall. When the relative brightness of the indoor and outdoor areas is relatively high and the brightness is too bright, which means that the lighting demand in the indoor inner area is higher to improve the uniformity of the inner and outer areas, more light is reflected into the indoor inner area to increase the lighting intensity in the indoor inner area. When the relative brightness of the indoor and outdoor areas is relatively low, there is no need to increase the indoor inner area lighting, but it is necessary to avoid the irritation to the eyes caused by the reflected light, the intensity of the reflected light reflected into the indoor inner area is reduced;

[0021] (3) By enabling the control module to judge whether the variance of several light intensity data among the light intensity in the indoor and outdoor areas and the light intensity in the indoor inner area exceeds the variance threshold, and when the judgment result is yes, reducing the average light intensity of the corresponding area, when there is uneven light intensity detection in the same block due to the reflected light, and thus some of the data detected by the light intensity sensors are on the high side, the average value is reduced to offset the influence of the local high light brought by the reflected light, the detection accuracy is improved, and further the accuracy of the reflected light intensity adjustment based on the detection result is improved, and the lighting uniformity is improved. Description of the Drawings

[0022] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the drawings.

[0023] Figure 1 It is a schematic structural diagram of the present invention when the sunshade is opened and the roller shutter is closed;

[0024] Figure 2 It is a schematic structural diagram of the present invention when both the sunshade and the roller shutter are opened;

[0025] Figure 3 Structural schematic diagram of the present invention; schematic diagram of the structure when both the sunshade panel and the roller blind are closed.

[0026] Figure 4 Block diagram of the control circuit of the present invention.

[0027] Description of main component symbols:

[0028] In the figure: 1, indoors; 21, sunshade panel; 211, reflective layer; 22, roller blind; 23, partition beam; 3, glass curtain wall; 4, detection module; 5, control module. Specific embodiments

[0029] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present invention as follows.

[0030] Please refer to Figures 1-4 , an adjustable double-layer daylighting and sunshading system, including a detection module 4, a control module 5, a sunshading module and a partition beam 23. The partition beam 23 is arranged inside the glass curtain wall 3 and is used to divide the glass curtain wall 3 into an upper side and a lower side;

[0031] Specifically, in this embodiment, each floor of the building is provided with a glass curtain wall 3 corresponding to the storey height. Each floor's glass curtain wall 3 is composed of several rectangular glasses with a vertical dimension greater than the horizontal dimension. For each rectangular glass, a partition beam 23 is provided. The partition beam 23 itself is a quadrangular prism;

[0032] The axial length of the quadrangular prism-shaped partition beam 23 is the same as the horizontal dimension of the rectangular glass. The partition beam 23 is parallel to the ground. The partition beam 23 divides the rectangular glass into an upper side and a lower side. At this time, both the upper side and the lower side of the rectangular glass are rectangles and are not connected to each other;

[0033] The sunshading module includes a roller blind 22 and a sunshade panel 21. The roller blind 22 is arranged below the partition beam 23. When the roller blind 22 is in the closed state, it shields the lower side of the glass curtain wall 3;

[0034] Specifically, a receiving cavity is formed by hollowing out the lower surface of the quadrangular prism-shaped partition beam 23. The receiving cavity is used to receive the body of the roller blind 22. The shape of the receiving cavity ensures that the roller blind 22 can be completely received in the receiving cavity when it is fully retracted. When the roller blind 22 is in the closed state, the roller blind 22 releases the curtain cloth downward. When the roller blind 22 fully releases the curtain cloth, the area of the curtain cloth is larger than the lower side of the glass curtain wall 3, completing the shielding of the lower side of the glass curtain wall 3 when the roller blind 22 is in the closed state;

[0035] The sunshade 21 is hinged to the upper side of the partition beam 23. The sunshade 21 can rotate around the hinge axis. When the sunshade 21 is in the closed state, it is parallel to the glass curtain wall 3 and shields the upper side of the glass curtain wall 3. When the sunshade 21 is in the open state, it forms an acute angle or a right angle with the upper side of the glass curtain wall 3. A reflective layer 211 is provided on the outer side of the sunshade 21;

[0036] Specifically, when the sunshade 21 is at one end of the stroke, the sunshade 21 fits with the upper side of the glass curtain wall 3. At this time, the sunshade 21 is in the closed state, and the upper side of the glass curtain wall 3 is shielded when the sunshade 21 is in the closed state. When the sunshade 21 is at the other end of the stroke, the sunshade 21 rotates to be perpendicular to the glass curtain wall 3. At this time, the sunshade 21 completely does not shield the upper side of the glass curtain wall 3. At the same time, because a reflective layer 211 is provided on the outer surface of the sunshade 21, when sunlight shines on the reflective layer 211 from the upper side of the glass curtain wall 3, it is reflected upward by the reflective layer 211. At this time, the light is reflected to the ceiling, and the supplementary lighting of the interior 1 is completed by using sunlight;

[0037] By adjusting the angle of the sunshade 21 according to the light intensity difference between the outer area and the inner area of the interior 1, the reflected light intensity is adjusted according to the actual needs of the interior 1, and the uniformity of the light intensity in the interior 1 is improved;

[0038] A light difference threshold is pre-entered into the control module 5. When the light intensity difference between the outer area and the inner area of the interior 1 is lower than the light difference threshold, the control module 5 instructs the sunshade 21 to increase the angle with the glass curtain wall 3. When the light intensity difference between the outer area and the inner area of the interior 1 is higher than the light difference threshold, the control module 5 instructs the sunshade 21 to reduce the angle with the glass curtain wall 3.

[0039] Specifically, the control module 5 instructs the sunshade 21 to adjust the angle with the glass curtain wall 3 to a, where a = (L1 - L2) / L1 × 45, where L1 is the light intensity of the outer area of the interior 1 and L2 is the light intensity of the inner area of the interior 1.

[0040] By making the control module 5 instruct the sunshade 21 to increase the angle with the glass curtain wall 3 when the light intensity difference between the outer area and the inner area of the interior 1 is lower than the light difference threshold, and when the light intensity difference between the outer area and the inner area of the interior 1 is higher than the light difference threshold, the control module 5 instructs the sunshade 21 to reduce the angle with the glass curtain wall 3, when the relative brightness of the outer area of the interior 1 is relatively high and the brightness is too bright, representing that the lighting demand of the inner area of the interior 1 is higher to improve the uniformity of the inner area and the outer area, more light is reflected into the inner area of the interior 1 to increase the light intensity of the inner area of the interior 1. When the relative brightness of the outer area of the interior 1 is relatively low and there is no need to increase the lighting of the inner area of the interior 1, but it is necessary to avoid the irritation to the eyes caused by the reflected light, the intensity of the reflected light reflected into the inner area of the interior 1 is reduced;

[0041] Specifically, the detection module 4 includes an inner area detector for Room 1 and an outer area detector for Room 1. The inner area detector for Room 1 is used to detect the light intensity in the inner area of Room 1 and upload it to the control module 5, and the outer area detector for Room 1 is used to detect the light intensity in the outer area of Room 1 and upload it to the control module 5;

[0042] In some cases, the light intensity varies at different locations within the inner area or the outer area of Room 1. If only a few sensors are set to measure the light intensity at a few locations, there is a probability that the detected light intensity will deviate significantly from the actual light intensity. Therefore, the inner area detector for Room 1 and the outer area detector for Room 1 each include several light intensity detectors. The light intensity in the outer area of Room 1 and the light intensity in the inner area of Room 1 each include several light intensity data.

[0043] Since the reflected light generated by the specular reflection of the light by the reflective layer 211 will form a light spot locally, resulting in excessive local illumination, when it is detected that the light intensity data uploaded by a certain sensor is too large, it is necessary to downwardly correct the overall data to offset the influence of excessive local illumination. Therefore, the control module 5 determines whether the variance of several light intensity data in the light intensity of the outer area of Room 1 and the light intensity of the inner area of Room 1 exceeds the variance threshold. When the judgment result is yes, the average light intensity of the corresponding area is reduced.

[0044] Specifically, several light intensity detectors are used to upload the light intensities of several inner areas and outer areas of Room 1 to the control module. Each time the control module receives several light intensity data, the control module calculates the variance F1 of the several light intensity data in the outer area of Room 1 and the variance F2 of the several light intensity data in the inner area of Room 1. The control module is used to correct the light intensity L1 in the outer area of Room 1 to L1×A1, and correct the light intensity L2 in the inner area of Room 11 to L2×A1, where A1 = 1+(F0 - F1) / F0, A2 = 1+(F0 - F2) / F0, F0 ≤ F1 ≤ 1.5F0, F0 ≤ F2 ≤ 1.5F0;

[0045] When the variance of the several light intensity data in a certain area is large, it means that there is a high probability that a local light spot is generated by the reflected light of specular reflection, and it is necessary to reduce the overall data to offset the influence of excessive local illumination. At this time, the value of A1 = 1+(F0 - F1) / F0 or A2 = 1+(F0 - F2) / F0 is small and less than 1. When the control module corrects the light intensity L1 in the outer area of Room 1 to L1×A1 or corrects the light intensity L2 in the inner area of Room 1 to L2×A1, the correction of the evaluation light intensity is completed when the variance is large;

[0046] On the contrary, when the variance is small, indicating fewer spot phenomena, there is no need to correct the average light intensity at this time. At this time, the value of F1 or F2 is close to or equal to 1, and the values of A1 = 1 + (F0 - F1) / F0 or A2 = 1 + (F0 - F2) / F0 correspondingly equal 1. When the control module corrects the light intensity L1 in the outer area of Room 1 to L1×A1 or corrects the light intensity L2 in the inner area of Room 1 to L2×A1, the correction of the average light intensity is not performed in the case of fewer spot phenomena; by enabling the control module 5 to determine whether the variance of several light intensity data in the light intensity of the outer area of Room 1 and the light intensity of the inner area of Room 1 exceeds the variance threshold, and when the judgment result is yes, reducing the average light intensity of the corresponding area, it is completed that due to the reflected light, there is uneven light intensity detection in the same area, and then when the data detected by some light intensity sensors is too high, reducing the mean value cancels the influence of the local high light brought by the reflected light, improving the detection accuracy, and further improving the accuracy of the reflected light intensity adjustment based on the detection result, and improving the lighting uniformity.

[0047] For the convenience of inputting values such as F0 and the threshold, it further includes a control panel for inputting the values of F0 and the threshold.

[0048] The working principle and usage process of the present invention:

[0049] When the roller shutter 22 is in the closed state, the roller shutter 22 releases the curtain downward. When the roller shutter 22 completely releases the curtain, the area of the curtain is larger than the lower side of the glass curtain wall 3, completing the shielding of the lower side of the glass curtain wall 3 when the roller shutter 22 is in the closed state;

[0050] When the sunshade 21 is at one end of the stroke, the sunshade 21 fits with the upper side of the glass curtain wall 3. At this time, the sunshade 21 is in the closed state, completing the shielding of the upper side of the glass curtain wall 3 when the sunshade 21 is in the closed state. When the sunshade 21 is at the other end of the stroke, the sunshade 21 rotates to be perpendicular to the glass curtain wall 3. At this time, the sunshade 21 completely does not shield the upper side of the glass curtain wall 3. At the same time, because a reflective layer 211 is provided on the outer surface of the sunshade 21, when sunlight shines on the reflective layer 211 from the upper side of the glass curtain wall 3, it is reflected upward by the reflective layer 211. At this time, the light is reflected to the ceiling, completing the supplementary lighting of Room 1 using sunlight.

[0051] The above is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes, but as long as it does not depart from the technical content of the present invention, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An adjustable double-layer lighting and shading system, characterized in that: It includes a detection module, a control module, a sunshade module and a partition beam; The partition beam is arranged at the inner side of the glass curtain wall and is used to divide the glass curtain wall into an upper side and a lower side. The sunshade module is arranged at the partition beam. The sunshade module includes a rolling curtain and a sunshade. The rolling curtain is arranged at the lower side of the partition beam. The sunshade is hinged to the upper side of the partition beam. A reflective layer is arranged on the side of the sunshade close to the glass curtain wall. The control module is electrically connected to the sunshade and the rolling curtain respectively and is used to control the opening and closing of the sunshade and the partition beam. When the rolling curtain is in a closed state, it shields the lower side of the glass curtain wall. When the rolling curtain is in an open state, it is retracted. When the sunshade is in a closed state, it is parallel to the glass curtain wall and shields the upper side of the glass curtain wall. When the sunshade is in an open state, it forms an acute angle or a right angle with the upper side of the glass curtain wall. The detection module is used to detect the light intensity of the indoor and outdoor areas and the indoor inner area and upload it to the control module, and the control module determines whether the light intensity of the indoor and outdoor areas and the indoor inner area exceeds the threshold; When the light intensity of the indoor and outdoor areas exceeds the threshold, the control module instructs the lower part to close, and determines whether the light intensity of the outdoor inner area exceeds the threshold. If the judgment result is yes, the upper part is instructed to close, and if the judgment result is no, the upper part is instructed to open to the specified angle; When the control module instructs the upper part to open to a specified angle, the angle of the sun visor is adjusted according to the light intensity difference between the indoor and outdoor areas and the indoor and indoor areas.

2. The adjustable double-layer lighting and shading system according to claim 1 is characterized in that: The control module is pre-input with a light difference threshold. When the light intensity difference between the indoor and outdoor areas and the indoor and inner areas is lower than the light difference threshold, the control module instructs the sun visor to increase the angle with the glass curtain wall. When the light intensity difference between the indoor and outdoor areas and the indoor and inner areas is higher than the light difference threshold, the control module instructs the sun visor to reduce the angle with the glass curtain wall.

3. The adjustable double-layer lighting and shading system according to claim 2 is characterized in that: The control module instructs the sunshade to adjust the angle with the glass curtain wall to a, where a=(L1-L2) / L1×45, where L1 is the light intensity of the indoor and outdoor areas, and L2 is the light intensity of the indoor area.

4. The adjustable double-layer lighting and shading system according to claim 3 is characterized in that: The detection module includes an indoor inner zone detector and an indoor outer zone detector. The indoor inner zone detector is used to detect the light intensity of the indoor inner zone and upload it to the control module, and the indoor outer zone detector is used to detect the light intensity of the indoor outer zone and upload it to the control module.

5. The adjustable double-layer lighting and shading system according to claim 4 is characterized in that: The indoor inner zone detector and the indoor outer zone detector include a plurality of light intensity detectors, and the light intensity of the indoor outer zone and the light intensity of the indoor inner zone both include a plurality of light intensity data. The control module determines whether the variance of the plurality of light intensity data in the light intensity of the indoor outer zone and the light intensity of the indoor inner zone exceeds a variance threshold. When the judgment result is yes, the average light intensity value of the corresponding area is reduced.

6. The adjustable double-layer lighting and shading system according to claim 5, characterized in that: The control module calculates the variance F1 of several light intensity data of indoor and outdoor areas and the variance F2 of several light intensity data of indoor inner area. The control module is used to correct the light intensity L1 of indoor and outdoor areas to L1×A1, and correct the light intensity L2 of indoor inner area to L2×A1, wherein A1=1+(F0-F1) / F0, A2=1+(F0-F2) / F0, F0≤F1≤1.5F0, F0≤F2≤1.5F0.

7. The adjustable double-layer lighting and shading system according to claim 6 is characterized in that: A control panel is also included, and the control panel is used to input the values ​​of F0 and threshold.

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