CN111158404A - Building facade lighting intelligent shielding system and method based on Internet of things - Google Patents
Building facade lighting intelligent shielding system and method based on Internet of things Download PDFInfo
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Abstract
The invention provides an Internet of things-based intelligent shielding system and method for building facade lighting, and the system comprises an indoor light sensor, a shading controller and a plurality of supports arranged on the periphery of a building glass facade, wherein a rocker shaft and a driving motor for driving the rocker shaft to rotate are arranged on the supports, and a sliding block and a telescopic mechanism which is connected with the shading controller and drives the sliding block to slide on the rocker shaft are arranged on the rocker shaft; the tail end of the rocker shaft is provided with a shading structure consisting of an extending umbrella cover, a keel, a movable supporting rod and a sliding block; the shading controller of the system controls the opening and closing of the stretched umbrella fabric and controls the direction of the rocker shaft through the driving motor of the driving support, the stretched umbrella fabric is used for shielding sunlight after being stretched, the direction of the rocker shaft is adjusted to be aligned with the direction of illumination, and shading is performed pertinently, so that the number of the stretched umbrella fabrics required to be stretched is reduced, the shading view field is reduced, the automatic shading effect can be achieved, and the problem of view field shading is also solved.
Description
Technical Field
The invention relates to the technical field of building sun visors, in particular to a building facade lighting intelligent shielding system and method based on the Internet of things.
Background
The glass facade of building can realize to indoor daylighting and to indoor conduction heat radiation, but direct incidence into indoor sunshine can influence people's work and life under the strong condition of sunshine, makes the people feel dazzling and dizzy, can conduct too much heat radiation to indoor moreover, including direct conduction of sunshine and by indirect conduction of glass behind the glass of shining hot, it is suitable very unfavorable to maintaining indoor temperature.
In order to solve the above problems, a light shielding plate may be installed outside a glass facade of a building, so as to block a part of sunlight from directly irradiating into a room and slow down heat radiation conduction, and the light shielding plate needs to be installed to avoid or reduce the shielding of the view of the glass facade as much as possible. Some buildings are provided with adjustable light shading plates aiming at glass facades, such as indoor-mounted shutters and outdoor-mounted movable sun shading plates consisting of grille doors capable of being twisted at small angles, but the applicant finds that the existing light shading plates have the technical problems that firstly, the light shading plates can be divided into horizontal light shading plates and vertical light shading plates, the former is suitable for the condition of high-angle illumination of sunlight, such as in the midday or in summer, and the latter is suitable for the condition of low-angle illumination of the sunlight, such as in the afternoon and evening insolation and in winter; for the blind window, the sun-shading angle of the blind window is adjusted by adjusting the blades arranged in parallel, but all the blades are synchronously turned over in the adjusting process of the blind window, so that the problem of shielding the view of the vertical surface of the glass can be caused under the condition of most angles; the existing movable sun visor composed of a grille door capable of being twisted at a small angle is similar to a louver in the whole structure, but the size of each blade is far larger than that of each blade of the louver and each blade can be independently moved, but the rotating directions of the blades are consistent, and the blades can be either horizontally turned or vertically turned, so that horizontal sun shading can be effectively carried out during horizontal turning, namely when the sun is irradiated at a high angle; when the sun is turned over in the vertical direction, vertical sun shading can be effectively carried out, namely the sun is obliquely irradiated; when the sunlight angle is not proper, the movable sun shield needs to be turned over to close the vertical surface of the glass, so that the view can be completely blocked; therefore, the sun visor can only well solve one of the two conditions under the conditions of high-angle sunlight irradiation in the noon, summer and the like or low-angle sunlight irradiation in the late sunny, winter and the like, wherein the good solution means that most of sunlight can be prevented from directly irradiating indoors, and the view of the vertical face of the glass is not shielded or reduced as much as possible, so that the traditional building glass vertical face sun visor still has certain defects and a large improved space.
Disclosure of Invention
The invention aims to provide an intelligent building facade lighting shielding system and method based on the Internet of things, which aim to solve the technical problem that the existing light shielding plate cannot give consideration to both the enhancement of the light shielding effect and the reduction of the shielded visual field; the technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides an Internet of things-based building facade lighting intelligent shielding system which comprises a light sensor, a shading controller and a plurality of supports, wherein the light sensor and the shading controller are arranged indoors, the plurality of supports are arranged on the periphery of a building glass facade, rocker shafts and driving motors for driving the rocker shafts to rotate are arranged on the supports, the driving motors are connected with the shading controller, and sliding blocks and telescopic mechanisms which are connected with the shading controller and drive the sliding blocks to slide on the rocker shafts are arranged on the rocker shafts; the tail end of the rocker shaft is provided with a shading structure consisting of an extending umbrella cover, a keel, a movable supporting rod and a sliding block, one end of the movable supporting rod is connected to the sliding block, the other end of the movable supporting rod is hinged with the keel, and the extending umbrella cover is laid on the keel; the light sensor detects indoor illumination conditions in real time and sends detection results to the shading controller, the shading controller drives the sliding block to slide through the telescopic mechanism, the sliding block drives the movable supporting rod and the keel to stretch and retract so as to adjust opening and closing of the stretching umbrella cover, and the shading controller controls the direction of the rocker shaft through the driving motor of the driving support so as to adjust the orientation of the stretching umbrella cover.
The shading system adopts a light sensor to detect indoor illumination conditions and sends the indoor illumination conditions to a shading controller through a wireless network or a wired network, the shading controller controls the opening and closing of an extended umbrella cover and controls the direction of a rocker shaft through a driving motor for driving a support, the extended umbrella cover is used for shading sunlight after being unfolded, the direction of the rocker shaft is adjusted to be aligned with the illumination direction, and shading is performed pertinently, so that the number of the extended umbrella covers required to be unfolded is reduced, and the shading visual field is reduced, wherein the opening and closing of the extended umbrella cover slides back and forth on the rocker shaft through a sliding block to drive a movable support frame to drive a keel to realize the unfolding and closing of the extended umbrella cover, and the sliding block slides on the rocker shaft; the rocker shaft is driven by the driving motor to rotate with a certain degree of freedom, and the direction is changed.
Optionally, the support includes the fixing base that sets up at building glass facade periphery, sets up the rotating base at the fixing base upper surface and sets up the angle modulation base at the rotating base upper surface, driving motor is including fixed first motor that sets up in the fixing base and the fixed second motor that sets up in the rotating base, first motor and second motor are controlled the drive by shading controller, first motor and rotating base's bottom center fixed connection and drive rotating base horizontal rotation, second motor and angle modulation base fixed connection drive angle modulation base and rotate, angle modulation base pivoted plane region is mutually perpendicular with the plane at rotating base place. In order to change the orientation of the rocker shaft in multiple directions, the angle adjustment is carried out by a first motor and a second motor which respectively correspond to the horizontal angle adjustment, namely the first motor drives the rotating base to rotate horizontally; and vertical angle is adjusted, and the second motor drives the plane swing perpendicularly that the relative rotation base of angle modulation base belongs to promptly, adjusts the orientation through second motor and first motor cooperation like this, and the orientation adjustment in a plurality of positions can be realized to the rocker shaft and fixed for it can shelter from diversified sunshine to extend the umbrella face, with the change of coping sunshine irradiation direction in one day.
Optionally, telescopic machanism is telescopic cylinder, telescopic cylinder's telescopic link and sliding block fixed connection, telescopic cylinder is by the length of shading controller drive adjustment telescopic link. The telescopic cylinder can be attached to the outer wall of the rocker shaft, the outer wall of the rocker shaft can be provided with a strip-shaped groove, and the telescopic cylinder and the telescopic rod are arranged in the strip-shaped groove, so that the integrity of the rocker shaft and the telescopic cylinder is further integrated; besides the telescopic cylinder, the telescopic mechanism can also select a telescopic joint rod driven by a motor and a gear mechanism to adjust the position of the sliding block on the rocker shaft.
Optionally, the telescopic cylinder is disposed inside the rocker shaft, the movable end of the telescopic rod is provided with a connecting block, a side wall of the rocker shaft is provided with a strip-shaped slit along the length direction of the rocker shaft, and the connecting block penetrates through the strip-shaped slit and is fixedly connected with the sliding block. In order to reduce the space occupied by the telescopic cylinder, the telescopic cylinder is arranged in the rocker shaft, the free end of the telescopic rod and the sliding block are fixedly connected through a connecting block in a mode that a strip-shaped seam is arranged on the side wall of the rocker shaft, and then the sliding block slides back and forth on the rocker shaft under the driving of the telescopic cylinder.
Optionally, the supports are correspondingly arranged in two rows at least up and down on the building glass facade, and each row is provided with at least two supports. The supports form at least 2x2 array distribution, and the distribution is adopted to better finish horizontal shading and vertical shading in the shading process, only the upper row of the extending umbrella cover is opened and the angle is adjusted to enable the umbrella cover to face upwards, so that the horizontal shading effect is realized; only opening the extending umbrella covers in a certain row, and adjusting the angle to enable the umbrella covers to face the left side or the right side for achieving the vertical shading effect; all the extending umbrella covers are opened completely to play a complete shading effect; all the extending umbrella covers are completely folded, so that the umbrella covers are not shielded from light, and the angle can be adjusted to enable the umbrella covers to face in the directions of oblique upward, oblique downward and the like, specifically according to the sunlight irradiation angle and the detection data of the indoor light sensor.
Optionally, at least three light sensors are dispersedly arranged indoors, and the light shading controller calculates fitting illumination intensity according to measurement data of each light sensor. The light sensors are arranged at a plurality of positions in a room, and the illumination intensity in the room is comprehensively evaluated, namely the fitting illumination intensity is obtained.
Optionally, the extendable canopy is a regular polygon after being fully extended. Which may be a regular triangle or a regular octagon.
An intelligent building facade lighting shielding method based on the Internet of things comprises the following steps:
step S1: the light sensor detects indoor illumination conditions in real time, measurement data are sent to the shading controller through the Internet of things, and the shading controller calculates fitting illumination intensity according to the measurement data and controls the opening and closing of the stretched umbrella cover in the shading mechanism according to the fitting illumination intensity;
step S2: after the rocker shaft props the stretched umbrella fabric, the orientation of the umbrella fabric is adjusted, and the umbrella fabric is adjusted to be horizontally shading, vertically shading or completely shading the whole glass facade.
Alternatively, in step S1, the following formula is used to calculate the fitting illumination intensity,
wherein the content of the first and second substances,
representing the fitting illumination intensity, n representing the number and number of the light sensors, EnRepresenting the intensity of illumination measured by the number n sensor, rnAnd the fitting coefficient corresponding to the n-type sensor represents, wherein the fitting coefficient is preset in the shading controller according to factors such as the geographical position of the building, the position of the light sensor, the orientation of the glass facade, time and season and the like.
Optionally, in step S2, only the upper row of extendable umbrella covers is opened and the angle is adjusted to achieve the horizontal shading effect; only opening the extending umbrella covers in a certain row, and adjusting the angle to realize the vertical shading effect; all the extending umbrella covers are opened completely to play a complete shading effect; and all the extending umbrella covers are completely retracted, so that the umbrella cover is not shielded from light.
It is worth to be noted that the heat gain quantity represented by the solar total transmittance comprises two parts, wherein one part is the solar radiant heat which directly penetrates through the glass and enters the room, and the other part is the heat which is radiated to the room after the glass and the component absorb the solar radiant heat; for the design of the vertical surface, the main purpose is to reduce the heat quantity of the second part to the indoor radiation, because the solar radiation of the first part needs to be introduced into the room as much as possible due to the need of lighting, which is the main contradiction of the problem, namely, the sunlight shielding needs to be considered, and the lighting needs to be considered, namely, the view shielding is avoided; because the heat transfer coefficient of the external window is greatly higher than that of the wall, the indoor radiation heat gain caused by the irradiation of the sun on the external facade of the building can be reduced mainly by shielding the external window (namely, a sun-shading measure), the external window is split from the direct sun-lighting angle and mainly divided into two parts, one part is used for seeing the hand from the solar altitude angle, and the horizontal sun shading is mainly designed; the other part starts from the azimuth angle of the sun and mainly designs vertical sun shading;
horizontal sunshade mainly through the design of outer sunshade of level and light guide plate, can avoid the direct solar radiation to reach outer window surface, utilizes the reflection light leading-in to indoor simultaneously, increases daylighting depth. As can be seen from fig. 1 to 11, a certain direct area can be reduced on the external window by horizontal shading, so that the radiation to the building due to the solar heat of the external window is heated. Meanwhile, sunlight is reflected to a building ceiling through the upper reflecting surface of the sun shield, and then the indoor lighting of the building is increased through the diffuse reflection of the ceiling; it should be noted that this part of reflected light also carries part of the energy into the room, which causes load in the room, but the heat of the reflected radiation can be reduced by using a condensation reflective coating, and therefore, the heat gain caused by this part of reflected solar radiation can be considered to be smaller than that of the direct solar radiation; in order to increase the shadow area, a plurality of sun-shading boards can be arranged, and the lighting depth of reflected light can be further increased;
meanwhile, it can be found that the sun changes in direction during the day and the depth of the indoor light changes, for example, the light sensor numbered 1 is disposed in the area a, and when the area a is in the morning, the light intensity of the area a may be weakened or not considered, when the fitting coefficient r1 is set, the time period from the morning to the noon may be selected, and r1 tends to be set to 0, and when the time period from the noon to the afternoon, if the light intensity of the area a is large, the indoor light may be greatly affected, when the fitting coefficient r1 is set, the time period from the noon to the afternoon is selected, and r1 is greater than 1, and the shading controller adjusts the orientation of the rocker shaft and opens and closes the shading surface, and also performs presetting according to the time period, for example, when the fitting light intensity is large, if the time period of the umbrella surface is in the morning, the shading level tends to be adjusted, and if the time is in the afternoon, the unfolding umbrella cover is adjusted to be vertical to the sun shading.
The invention provides an intelligent building facade lighting shielding system and method based on the Internet of things, which have the beneficial effects that:
the shading controller of the system controls the opening and closing of the stretched umbrella fabric and controls the direction of the rocker shaft through the driving motor of the driving support, the stretched umbrella fabric is used for shielding sunlight after being stretched, the direction of the rocker shaft is adjusted to be aligned with the direction of illumination, and shading is performed pertinently, so that the number of the stretched umbrella fabrics required to be stretched is reduced, the shading view field is reduced, the automatic shading effect can be achieved, and the problem of view field shading is also solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a schematic structural diagram of the light shielding structure of the present invention;
FIG. 3 is a schematic front view of the support and drive motor of the present invention;
FIG. 4 is a schematic side view of the support and drive motor of the present invention;
FIG. 5 is a schematic view of the mounting arrangement of the stand of the present invention on a glass facade;
FIG. 6 is a schematic diagram of the structural effect of the present invention when horizontal shading is adopted;
FIG. 7 is a schematic diagram of the structural effect of the present invention when vertical shading is adopted;
FIG. 8 is a schematic diagram of the structural effect of the present invention when full shading is employed;
FIG. 9 is a schematic view of another structural effect of the present invention when horizontal shading is adopted;
FIG. 10 is a schematic view of another structural effect of the present invention when vertical light shielding is adopted;
FIG. 11 is a schematic view of another structural effect of the present invention when the present invention is applied with full shading;
FIG. 12 is a flow chart of a method of the present invention.
In the figure, 1-a light sensor, 2-a shading controller, 3-a glass facade, 4-a rocker shaft, 5-a sliding block, 6-an extending umbrella cover, 7-a keel, 8-a movable supporting rod, 9-a fixed seat, 10-a rotating base, 11-an angle adjusting base, 12-a first motor, 13-a second motor, 14-a telescopic cylinder, 15-a telescopic rod, 16-a connecting block and 17-a strip-shaped seam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
as shown in fig. 1 to 11, an intelligent architectural facade lighting shielding system based on the internet of things comprises a light sensor 1 arranged indoors, a shading controller 2 and a plurality of supports arranged on the periphery of a building glass facade 3, wherein a rocker shaft 4 and a driving motor for driving the rocker shaft 4 to rotate are arranged on the supports, the driving motor is connected with the shading controller 2, and a sliding block 5 and a telescopic mechanism which is connected with the shading controller 2 and drives the sliding block 5 to slide on the rocker shaft 4 are arranged on the rocker shaft 4; the tail end of the rocker shaft 4 is provided with a shading structure consisting of an extending umbrella cover 6, a keel 7, a movable supporting rod 8 and a sliding block 5, one end of the movable supporting rod 8 is connected to the sliding block 5, the other end of the movable supporting rod is hinged with the keel 7, and the extending umbrella cover 6 is laid on the keel 7; the light sensor 1 detects indoor illumination conditions in real time and sends detection results to the shading controller 2, the shading controller 2 drives the sliding block 5 to slide through the telescopic mechanism, the sliding block 5 drives the movable supporting rod 8 and the keel 7 to stretch and retract so as to adjust opening and closing of the stretching umbrella cover 6, and the shading controller 2 further controls the direction of the rocker shaft 4 through a driving motor of the driving support so as to adjust the orientation of the stretching umbrella cover 6.
The shading system adopts a light sensor 1 to detect indoor illumination conditions and sends the indoor illumination conditions to a shading controller 2 through a wireless network or a wired network, the shading controller 2 controls the opening and closing of an extended umbrella cover 6 and controls the direction of a rocker shaft 4 through a driving motor of a driving support, the extended umbrella cover 6 is used for shading sunlight after being unfolded, the direction of the rocker shaft 4 is adjusted to be aligned with the illumination direction, shading is performed pertinently, the number of the extended umbrella covers 6 needing to be unfolded is further reduced, and the shading visual field is reduced, wherein the opening and closing of the extended umbrella cover 6 are driven to drive a movable support frame to further drive a keel 7 to realize the unfolding and closing of the extended umbrella cover 6 through the back and forth sliding of a sliding block 5 on the rocker shaft 4, and the sliding block 5 slides on the; the rocker shaft 4 is driven by the driving motor to rotate with a certain degree of freedom, and the direction is changed.
Example 2:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in 1-4, the support includes the fixing base 9 that sets up at building glass facade 3 periphery, sets up rotating base 10 on fixing base 9 upper surface and sets up the angle modulation base 11 on rotating base 10 upper surface, driving motor is including fixed first motor 12 that sets up in fixing base 9 and the fixed second motor 13 that sets up in rotating base 10, first motor 12 and second motor 13 are controlled the drive by shading controller 2, first motor 12 and rotating base 10's bottom center fixed connection and drive rotating base 10 horizontal rotation, second motor 13 and angle modulation base 11 fixed connection and drive angle modulation base 11 and rotate, angle modulation base 11 pivoted plane region is mutually perpendicular with the plane that rotating base 10 belonged to. In order to change the orientation of the rocker shaft 4 in multiple directions, two motors, namely a first motor 12 and a second motor 13, are adopted for angle adjustment and respectively correspond to horizontal angle adjustment, namely the first motor 12 drives the rotating base 10 to rotate horizontally; and vertical angle adjustment, that is, the second motor 13 drives the angle adjustment base 11 to swing vertically relative to the plane where the rotating base 10 is located, so that the orientation is adjusted cooperatively through the second motor 13 and the first motor 12, and the rocker shaft 4 can adjust and fix the orientation in multiple directions, so that the extending umbrella cover 6 can shield the sunlight in multiple directions to cope with the change of the sunlight irradiation direction in one day.
Example 3:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 1 and 3, the telescopic mechanism is a telescopic cylinder 14, a telescopic rod 15 of the telescopic cylinder 14 is fixedly connected with the sliding block 5, and the telescopic cylinder 14 is driven by the shading controller 2 to adjust the length of the telescopic rod 15. The telescopic cylinder 14 can be attached to the outer wall of the rocker shaft 4, the outer wall of the rocker shaft 4 can be provided with a strip-shaped groove, and the telescopic cylinder 14 and the telescopic rod 15 are arranged in the strip-shaped groove, so that the integrity of the rocker shaft 4 and the telescopic cylinder 14 is further integrated; besides the telescopic cylinder 14, the telescopic mechanism can also select a telescopic joint rod driven by a motor and a gear mechanism to adjust the position of the sliding block 5 on the rocker shaft 4.
Example 4:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 2, the telescopic cylinder 14 is disposed inside the rocker shaft 4, the movable end of the telescopic rod 15 is provided with a connecting block 16, a side wall of the rocker shaft 4 is provided with a strip-shaped slit 17 along the length direction of the rocker shaft 4, and the connecting block 16 passes through the strip-shaped slit 17 and is fixedly connected with the sliding block 5. In order to reduce the space occupied by the telescopic cylinder 14, the telescopic cylinder 14 is arranged inside the rocker shaft 4, the free end of the telescopic rod 15 and the sliding block 5 are fixedly connected through a connecting block 16 in a mode that a strip-shaped seam 17 is arranged on the side wall of the rocker shaft 4, and then the sliding block 5 slides back and forth on the rocker shaft 4 under the driving of the telescopic cylinder 14.
Example 5:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 5-11, the supports are correspondingly arranged in two rows at least up and down on the building glass facade 3, and at least two supports are arranged on each row. The supports form at least 2x2 array distribution, and the distribution is adopted to better finish horizontal shading and vertical shading in the shading process, only the upper row of the extending umbrella cover 6 is opened and the angle is adjusted to enable the umbrella cover to face upwards for realizing the horizontal shading effect; only the extended umbrella covers 6 in a certain row are opened, and the angle is adjusted to enable the umbrella covers to face towards the left side or the right side, so that the vertical shading effect is achieved; all the extending umbrella covers 6 are opened completely to play a complete shading effect; all the extending umbrella covers 6 are completely folded, so that the umbrella covers are not shielded from light, and the angle can be adjusted to enable the umbrella covers to face in the directions of oblique upward, oblique downward and the like, specifically according to the sunlight irradiation angle and the detection data of the indoor light sensor 1; the light sensors 1 are distributed at least three indoors, and the shading controller 2 calculates fitting illumination intensity according to the measurement data of each light sensor 1. The light sensors 1 are arranged at a plurality of indoor positions, and comprehensively evaluate the indoor illumination intensity, namely fitting the illumination intensity; the extendable canopy 6 has a regular polygon shape after being fully extended. Which may be a regular triangle or a regular octagon.
Example 6:
an intelligent building facade lighting shielding method based on the Internet of things comprises the following steps:
step S1: the light sensor 1 detects indoor illumination conditions in real time, measured data are sent to the shading controller 2 through the Internet of things, the shading controller 2 calculates fitting illumination intensity according to the measured data and controls the opening and closing of the stretched umbrella cover 6 in the shading mechanism according to the fitting illumination intensity, the following formula is adopted when the fitting illumination intensity is calculated,
wherein the content of the first and second substances,
representing the fitting illumination intensity, n representing the number and number of the light sensors 1, EnRepresenting the intensity of illumination measured by the number n sensor, rnRepresenting the fitting coefficient corresponding to the number n sensor, wherein the fitting coefficient is according to the buildingFactors such as the geographical position, the position of the light sensor 1, the orientation of the glass facade 3, time and season and the like are preset in the shading controller 2;
step S2: the rocker shaft 4 can adjust the orientation of the umbrella cover after opening the extending umbrella cover 6, adjust the umbrella cover to horizontally shade, vertically shade or completely shield the whole glass facade 3, and only open the upper row of extending umbrella covers 6 and adjust the angle for realizing the horizontal shading effect; only the extended umbrella covers 6 in a certain row are opened, and the angle is adjusted to realize the vertical shading effect; all the extending umbrella covers 6 are opened completely to play a complete shading effect; all of the extendable covers 6 are fully retracted without shading.
It is worth to be noted that the heat gain quantity represented by the solar total transmittance comprises two parts, wherein one part is the solar radiant heat which directly penetrates through the glass and enters the room, and the other part is the heat which is radiated to the room after the glass and the component absorb the solar radiant heat; for the design of the vertical surface, the main purpose is to reduce the heat quantity of the second part to the indoor radiation, because the solar radiation of the first part needs to be introduced into the room as much as possible due to the need of lighting, which is the main contradiction of the problem, namely, the sunlight shielding needs to be considered, and the lighting needs to be considered, namely, the view shielding is avoided; because the heat transfer coefficient of the external window is greatly higher than that of the wall, the indoor radiation heat gain caused by the irradiation of the sun on the external facade of the building can be reduced mainly by shielding the external window (namely, a sun-shading measure), the external window is split from the direct sun-lighting angle and mainly divided into two parts, one part is used for seeing the hand from the solar altitude angle, and the horizontal sun shading is mainly designed; the other part starts from the azimuth angle of the sun and mainly designs vertical sun shading;
horizontal sunshade mainly through the design of outer sunshade of level and light guide plate, can avoid the direct solar radiation to reach outer window surface, utilizes the reflection light leading-in to indoor simultaneously, increases daylighting depth. As can be seen from fig. 1 to 11, a certain direct area can be reduced on the external window by horizontal shading, so that the radiation to the building due to the solar heat of the external window is heated. Meanwhile, sunlight is reflected to a building ceiling through the upper reflecting surface of the sun shield, and then the indoor lighting of the building is increased through the diffuse reflection of the ceiling; it should be noted that this part of reflected light also carries part of the energy into the room, which causes load in the room, but the heat of the reflected radiation can be reduced by using a condensation reflective coating, and therefore, the heat gain caused by this part of reflected solar radiation can be considered to be smaller than that of the direct solar radiation; in order to increase the shadow area, a plurality of sun-shading boards can be arranged, and the lighting depth of reflected light can be further increased;
meanwhile, it can be found that the sun changes in direction during the day and changes in depth of illumination in the room, for example, the light sensor 1 numbered 1 is disposed in the area a, and the illumination intensity of the area a in the morning is considered weak or not considered, when the fitting coefficient r1 is set, the time period from morning to noon may be selected, r1 tends to be set to 0, and in the time period from noon to afternoon, if the illumination intensity of the area a is large, the indoor is greatly affected, when the fitting coefficient r1 is set, the time period from noon to afternoon is selected, r1 is set to be greater than 1, and the shutter controller 2 adjusts the orientation of the rocker shaft 4 and the opening and closing of the extending umbrella cover 6, and is also preset according to the time period, for example, when the fitting illumination intensity is large, if in the time period of the morning, the extended canopy 6 tends to be adjusted for horizontal shading and if it is during the afternoon hours, the extended canopy 6 tends to be adjusted for vertical shading.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The intelligent building facade lighting shielding system based on the Internet of things is characterized by comprising a light sensor (1) arranged indoors, a shading controller (2) and a plurality of supports arranged on the periphery of a building glass facade (3), wherein a rocker shaft (4) and a driving motor for driving the rocker shaft to rotate are arranged on the supports, the driving motor is connected with the shading controller (2), and a sliding block (5) and a telescopic mechanism which is connected with the shading controller (2) and drives the sliding block (5) to slide on the rocker shaft are arranged on the rocker shaft (4); the tail end of the rocker shaft (4) is provided with a shading structure consisting of an extending umbrella cover (6), a keel (7), a movable supporting rod (8) and a sliding block (5), one end of the movable supporting rod (8) is connected to the sliding block (5), the other end of the movable supporting rod is hinged with the keel (7), and the extending umbrella cover (6) is laid on the keel (7); the light sensor (1) detects indoor illumination conditions in real time and sends detection results to the shading controller (2), the shading controller (2) drives the sliding block (5) to slide through the telescopic mechanism, the sliding block (5) drives the movable supporting rod (8) and the keel (7) to stretch and retract so as to adjust opening and closing of the stretching umbrella cover (6), and the shading controller (2) controls the direction of the rocker shaft (4) through a driving motor of the driving support so as to adjust orientation of the stretching umbrella cover (6).
2. The intelligent architectural facade lighting shielding system based on the Internet of things is characterized in that the support comprises a fixed seat (9) arranged on the periphery of the architectural glass facade (3), a rotating base (10) arranged on the upper surface of the fixed seat (9) and an angle adjusting base (11) arranged on the upper surface of the rotating base (10), the driving motor comprises a first motor (12) fixedly arranged in the fixed seat (9) and a second motor (13) fixedly arranged in the rotating base (10), the first motor (12) and the second motor (13) are controlled and driven by a shading controller (2), the first motor (12) is fixedly connected with the bottom center of the rotating base (10) and drives the rotating base (10) to rotate horizontally, the second motor (13) is fixedly connected with the angle adjusting base (11) and drives the angle adjusting base (11) to rotate, the plane area of the angle adjusting base (11) is perpendicular to the plane of the rotating base (10).
3. The intelligent architectural facade lighting shielding system based on the Internet of things as claimed in claim 1, wherein the telescopic mechanism is a telescopic cylinder (14), a telescopic rod (15) of the telescopic cylinder (14) is fixedly connected with the sliding block (5), and the telescopic cylinder (14) is driven by the shading controller (2) to adjust the length of the telescopic rod (15).
4. The intelligent architectural facade lighting shielding system based on the Internet of things is characterized in that the telescopic cylinder (14) is arranged inside the rocker shaft (4), the movable end of the telescopic rod (15) is provided with a connecting block (16), the side wall of the rocker shaft (4) is provided with a strip-shaped seam (17) along the length direction of the rocker shaft (4), and the connecting block (16) penetrates through the strip-shaped seam (17) to be fixedly connected with the sliding block (5).
5. The intelligent architectural facade lighting shielding system based on the internet of things as claimed in claim 1, wherein the support is correspondingly arranged in two rows at least up and down in parallel on the architectural glass facade (3), and each row is provided with at least two supports.
6. The intelligent architectural facade lighting shielding system based on the internet of things as claimed in claim 1, wherein at least three light sensors (1) are dispersedly arranged indoors, and the shading controller (2) calculates the fitting illumination intensity according to the measurement data of each light sensor (1).
7. The intelligent architectural facade lighting shading system based on the internet of things as claimed in claim 1, wherein the extendable umbrella cover (6) is a regular polygon after being fully extended.
8. An intelligent building facade lighting shielding method based on the Internet of things is characterized by comprising the following steps:
step S1: the light sensor (1) detects indoor illumination conditions in real time, measurement data are sent to the shading controller (2) through the Internet of things, the shading controller (2) calculates fitting illumination intensity according to the measurement data, and the opening and closing of the stretching umbrella cover (6) in the shading mechanism are controlled according to the fitting illumination intensity;
step S2: the rocker shaft (4) can adjust the orientation of the umbrella cover after opening the extending umbrella cover (6), and adjust the umbrella cover to horizontally shade, vertically shade or completely shield the whole glass facade (3).
9. The Internet of things-based intelligent shielding method for building facade lighting according to claim 8, wherein in the step S1, the following formula is adopted when calculating the fitting illumination intensity,
wherein the content of the first and second substances,
representing the fitting illumination intensity, n representing the number and number of the light sensors (1), EnRepresenting the intensity of illumination measured by the number n sensor, rnAnd the fitting coefficient corresponding to the number n sensor is preset in the shading controller (2) according to the geographical position of the building, the position of the light sensor (1), the orientation of the glass facade (3), the time season and other factors.
10. The Internet of things-based intelligent shielding method for building facade lighting according to claim 8, wherein in the step S2, only the upper row of extended umbrella covers (6) is opened and the angle is adjusted to achieve the horizontal shading effect; only the extended umbrella covers (6) in a certain row are opened, and the angle is adjusted to realize the vertical shading effect; all the extending umbrella covers (6) are opened completely to achieve a complete shading effect; all the extending umbrella covers (6) are fully retracted and do not shield light.
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| CN202010007048.0A CN111158404A (en) | 2020-01-03 | 2020-01-03 | Building facade lighting intelligent shielding system and method based on Internet of things |
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| CN202010007048.0A CN111158404A (en) | 2020-01-03 | 2020-01-03 | Building facade lighting intelligent shielding system and method based on Internet of things |
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