KR20200107234A - Solar shading system for three-dimensional decoration and lighting control of buildings facades - Google Patents

Abstract

The present invention relates to a solar shading system for three-dimensionally decorating the outer wall of a building and controlling lighting thereon. The purpose of the present invention is to provide a solar shading system for three-dimensionally decorating the outer wall of a building and controlling lighting thereon, which is installed on the outer wall of a building to be able to adjust the amounts of sunlight and wind and serve as a decorative element for improving the aesthetics of the exterior of the building. To this end, the present invention provides a solar shading system for three-dimensionally decorating the outer wall of a building and controlling lighting thereon. The solar shading system comprises: a frame installed on the outer wall of a building, and having an open lighting space formed therein to allow sunlight to enter the interior; a plurality of first shafts traversing the lighting space in a vertical direction, and fixedly installed on the frame to be spaced apart from each other in a horizontal direction; a plurality of second shafts which are adjacent to the first shafts, extend in a direction parallel to the first shafts, traverse the lighting space, and are coupled to the frame to be rotatable; a driving means for rotating the second shafts forward and backward; a plurality of fixed light blocking members fixedly installed on each of the first shafts to be spaced apart from each other on the first shaft, and disposed to be distributed in the lighting space; and a plurality of rotating light blocking members which are fixedly installed on each of the second shafts to be positioned between the fixed light blocking members while being spaced apart from each other on the second shaft, and switching to a first position in which the rotating light blocking members are parallel to the fixed light blocking members while rotating together with the second shafts and a second position in which the rotating light blocking members protrude outward of the building.

Description

Solar shading system for three-dimensional decoration and lighting control of buildings facades}

The present invention relates to a light-shielding system, and more particularly, changes in the shape of the three-dimensional decoration along with controlling the amount of light while rotating some of the light-shielding members installed on the outer wall of a building to implement a three-dimensional decoration while forming a uniform pattern. The present invention relates to a light-shielding system for three-dimensional decoration and lighting control of a building exterior wall including an interactive function that automatically opens and closes a light-shielding member in response to a change in surrounding environment, and is made to enable a variety of atmospheres.

In general, windows are configured to allow light and air to enter and exit for lighting and ventilation.

On the other hand, since sunlight and wind flowing into the room through a window have a great influence on the indoor temperature, energy required for cooling and heating of an indoor space can be reduced by effectively using the sunlight and wind flowing into the room.

For example, sunlight entering an indoor space in winter increases the indoor temperature, thereby reducing energy required for heating an indoor space, while sunlight entering an indoor space in summer increases energy required for cooling the indoor space.

In addition, when sunlight entering the room is directly irradiated to the skin or display items of a person, it may cause damage to the skin or display items, and therefore, a light-shielding device for appropriately controlling the sunlight entering the room is used.

Blinds, which are generally widely used shading devices, are installed inside a window to block sunlight flowing through the window.

However, since such blinds block sunlight that has already entered the room through a window, there is a problem that the effect of contributing to energy saving is inferior.

In addition, there is a problem that the exterior of the building is disturbed as blinds having different shapes and operation methods are indiscriminately installed on several windows provided in the building.

Registered Patent Publication No. 10-1711825 (2017.03.03.

The present invention has been made in consideration of the above problems, and an object of the present invention is to be installed on the exterior wall of a building to control the amount of sunlight and wind flowing into the interior, as well as to act as a decorative element to improve the aesthetics of the building exterior. It is to provide a shading system for three-dimensional decoration and lighting control of the exterior wall of a building.

Another object of the present invention is to provide a shading system for three-dimensional decoration and light control of a building exterior wall including an interactive function that induces a change in the amount of light and a change in the exterior of a building while the shading member automatically operates in response to changes in the surrounding environment. Is in.

The present invention for achieving the object as described above and performing the task for removing the conventional defects is a frame which is installed on the exterior wall of a building and has an open lighting space formed therein so that sunlight can enter the room; A plurality of first shafts fixed to the frame so as to have a structure that crosses the light-emitting space in a vertical direction and is spaced apart from each other in a horizontal direction; A plurality of second shafts that extend in a direction parallel to the first shaft from adjacent to the first shaft and cross the light-emitting space, but are coupled to the frame so as to have a rotatable structure; Driving means for rotating the second shaft in a forward and reverse direction; A plurality of fixed light blocking members fixedly installed on each of the first shafts so as to have an arrangement structure spaced apart from each other along the first axis and disposed to be distributed in the light-emitting space; And a first posture that is fixedly installed on each second axis so as to have an arrangement structure that is spaced apart from each other along the second axis and positioned between the fixed light blocking members, rotates together with the second axis, and is parallel to the fixed light blocking member. It provides a light-shielding system for three-dimensional decoration and lighting control of the exterior wall of a building, characterized in that consisting of;

Meanwhile, in the light blocking system for three-dimensional decoration and light control of the exterior wall of the building, the fixed light blocking member and the rotating light blocking member have the same shape, but are formed in a bar shape having a rectangular cross section, and have a horizontal posture. It can be installed on the shaft and the second shaft.

On the other hand, in the light-shielding system for three-dimensional decoration and light control of the exterior wall of the building, wherein the first axis and the second axis, the pillar having a rectangular cross section; And a plurality of fixing brackets having a U-shaped cross-section with one side open so that the fixed light blocking member or the rotating light blocking member is inserted and fixed, and fixedly installed on one side of the holding part. .

Meanwhile, in the light-shielding system for three-dimensional decoration and lighting control of the outer wall of the building, the driving means comprises: a rotation link installed on each second shaft so as to rotate together with the second shaft; A connecting link connecting the rotating links installed on each of the second shafts to each other; And a motor connected to one of the plurality of second shafts to rotate the second shaft, so that the remaining rotation shafts rotate together when one of the second shafts rotates.

Meanwhile, in the light blocking system for three-dimensional decoration and lighting control of the exterior wall of the building, when the rotating light blocking member is switched to the first position by rotation of the second axis, the rear surface of the rotating light blocking member is in close contact with and supported by the first axis. Can be done.

Meanwhile, in the light blocking system for three-dimensional decoration and light control of the outer wall of the building, it is preferable that the rotational light blocking member is fixed to the second axis at a position close to the inner end of the rotating light blocking member.

On the other hand, in the light-shielding system for three-dimensional decoration and light control of the exterior wall of a building, comprising: an illuminance sensor for sensing brightness of an indoor space; And an interactive controller having a control function for each illuminance to adjust the amount of sunlight entering the indoor space while rotating the rotating light blocking member through the control of the driving means so that the measured illuminance value detected by the illuminance sensor follows a preset reference illuminance value. ; May be further included.

Meanwhile, in the light-shielding system for three-dimensional decoration and lighting control of the exterior wall of the building, the measured illuminance value may be determined as an average value of illuminance values detected for a preset time by an illuminance sensor.

Meanwhile, in the light-shielding system for three-dimensional decoration and lighting control of the exterior wall of the building, the driving means is controlled to open the rotating light-shielding member in accordance with a preset sunrise time, and the rotating light-shielding member is closed in accordance with a preset sunset time. An interactive controller having a control function for each time period to control; may be further included.

Meanwhile, in the light-shielding system for three-dimensional decoration and lighting control of the exterior wall of a building, the system comprising: a counter sensor for detecting actual occupants of an indoor space; And an interactive controller having a control function for each number of users to control the driving means to open the rotating light blocking member when the number of occupants detected by the counter sensor is greater than or equal to a preset reference number.

Meanwhile, in the light-shielding system for three-dimensional decoration and lighting control of the exterior wall of the building, the counter sensor may be configured as a far-infrared sensor or an ultrasonic sensor that is installed at an entrance of an indoor space and generates a signal in response to a person passing through the entrance.

Meanwhile, in the light-shielding system for three-dimensional decoration and lighting control of the exterior wall of the building, the number of occupants may be determined as an average value of the number of persons detected for a preset time by a counter sensor.

Meanwhile, the control function for each illuminance, the control function for each time, and the control function for each number of users may be included in one interactive controller.

According to the present invention having the above characteristics, a plurality of fixed light blocking members and rotating light blocking members arranged vertically and horizontally are capable of creating a unique atmosphere by implementing a three-dimensional decoration on the outer wall of the building, as well as through the rotational motion of the rotating light blocking member. It has the effect of controlling the change of the exterior atmosphere of the building and the amount of sunlight and wind flowing into the building.

1 is a bird's-eye view of a building to which the shading system according to the present invention is applied,
2 is a perspective view of a shading system according to a preferred embodiment of the present invention,
3 is a rear perspective view of a shading system according to a preferred embodiment of the present invention,
4 is a rear view of a shading system according to a preferred embodiment of the present invention,
5 is a perspective view showing a state in which a first shaft and a fixed light blocking member are coupled according to the present invention;
6 is a perspective view showing a state in which a second shaft and a rotating light blocking member are coupled according to the present invention;
7 is a plan view showing a state in which the rotating light blocking member according to the present invention rotates and protrudes;
8 is a perspective view of a light blocking system showing a rotational light blocking member according to the present invention,
9 is a rear perspective view of a light blocking system showing a rotated state of a rotating light blocking member according to the present invention;
10 is a bird's eye view of a building in a state in which the rotating light blocking member of the light blocking system according to the present invention is rotated.

Hereinafter, preferred embodiments of the present invention will be described in detail in conjunction with the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 is a bird's eye view of a building to which the light blocking system according to the present invention is applied, FIG. 2 is a perspective view of a light blocking system according to a preferred embodiment of the present invention, and FIG. 3 is a rear perspective view of a light blocking system according to a preferred embodiment of the present invention. 4 is a rear view of a light blocking system according to a preferred embodiment of the present invention, FIG. 5 is a perspective view showing a state in which a first shaft and a fixed light blocking member according to the present invention are coupled, and FIG. 6 is a first according to the present invention. A perspective view showing a state in which the two shafts and the rotational shading member are coupled, FIG. 7 is a plan view showing a state in which the rotational shading member according to the present invention rotates and protrudes, and FIG. Fig. 9 is a perspective view of the light blocking system in which the rotating light blocking member according to the present invention is rotated, and Fig. 10 is a building in which the rotating light blocking member is rotated in the light blocking system according to the present invention. It shows a bird's eye view.

The light blocking system 100 according to the present invention is installed on the exterior wall of a building to allow the exterior of the building to create a unique atmosphere while controlling sunlight or wind flowing into the interior, and the frame 110 and the first shaft 120 , A second shaft 130, a driving means 140, a fixed light blocking member 150, and a rotating light blocking member 160.

The frame 110 is a frame made of a polygonal structure, and is fixedly installed on the exterior wall of a building, and includes an open lighting space 111 formed therein so that sunlight or wind can flow into the interior.

On the other hand, the structure of the frame 110 made of a rectangular frame structure is shown in FIGS. 2 to 4.

The first shaft 120 supports the fixed light blocking member 150 and is installed on the frame 110 so as to have a structure that crosses the light-emitting space 111 in a vertical position.

These first shafts 120 are made up of a plurality, and the plurality of first shafts 120 are installed on the frame 110 so as to have an arrangement structure spaced apart from each other at predetermined intervals in the horizontal direction.

On the other hand, each of the first shaft 120 has a rectangular cross-section consisting of a pair of long sides (121a, 121b) and a pair of short sides (121c, 121d), and the holding portion 121 It is installed to be fixed on the side of the fixed light shielding member 150 is composed of a plurality of fixing brackets 122 supporting, the upper end and the lower end of the holding portion 121 is fixed to the frame 110.

At this time, the fixing bracket 122 has a C-shaped cross section with one side open to facilitate installation and disassembly of the fixed light blocking member 150, and a plurality of the fixing brackets 122 are spaced apart from each other at regular intervals along the first shaft 120. It is fixedly installed on the first shaft 120 to have an arrangement structure.

On the other hand, in order to effectively suppress the deformation of the first shaft 120 by the fixed light blocking member 150 having a structure extending in the horizontal direction, the fixing bracket 122 is fixed to the side of the long side 121a. Installed.

The second shaft 130 supports the rotating light blocking member 160, and extends in a direction parallel to the first shaft 120 from a neighboring portion of the first shaft 120 to cross the light-emitting space 111. It is installed so as to scream.

That is, the second shaft 130 is disposed so as to cross the light-emitting space 111 in a vertical position at a position adjacent to the first shaft 120, and is composed of a plurality of the same as the first shaft 120, respectively. It is installed to be located adjacent to the first shaft 120 of.

This second axis 130 has a rectangular cross-section consisting of a pair of long sides (131a, 131b) and a pair of short sides (131c, 131d), and the side of the holding portion 131 It is installed and includes a plurality of fixing brackets 132 for supporting the rotating light blocking member 160, and the upper and lower portions are coupled to the frame 110 in a rotatable structure.

Meanwhile, the fixing bracket 132 has a C-shaped cross section with one side open to facilitate the installation and disassembly of the rotating light blocking member 160, and a plurality of the fixing brackets 132 are spaced apart from each other at a predetermined interval along the second shaft 130. It is fixedly installed on the side of the long side 131a of the second shaft 130 to have an arrangement structure.

The driving means 140 rotates the second shaft 130 in the forward and reverse direction, and is composed of a rotation link 141, a connection link 142, and a motor 143.

The rotation link 141 is fixedly installed on the second shaft 130 to have a structure protruding in the horizontal direction from the top or the bottom of the second shaft 130 and is configured to rotate together with the second shaft 130, These rotation links 141 are installed in the same structure on all the second shafts (130).

The connection link 142 is configured to connect the connection links 142 installed on the plurality of second shafts 130 to each other, and a plurality of second shafts 130 by the connection link 142 and the rotation link 141 ) Rotates in the same direction and angle.

The motor 143 is connected to any one of a plurality of second shafts 130 to rotate the corresponding second shaft 130, and is directly connected to the second shaft 130 or a chain It may be configured to rotate the second shaft 130 by being indirectly connected to the second shaft 130 through or a gear.

The fixed light blocking member 150 is formed in a bar shape having a rectangular cross section, and is installed on the fixing bracket 122 of the first shaft 120 to have a horizontal posture.

On the other hand, according to a preferred embodiment of the present invention, a plurality of fixed light blocking members 150 are assembled to a plurality of fixing brackets 122 installed on the first shaft 120 to be regularly arranged vertically and horizontally in the lighting space 111 It is installed to have a structure.

The rotating light blocking member 160 is formed in a bar shape having a rectangular cross-section similar to the fixed light blocking member 150 and is installed on the fixing bracket 132 of the second shaft 130 to have a horizontal posture.

As such, the rotating light blocking member 160 installed on the fixing bracket 132 of the second shaft 130 is disposed to be positioned between the fixed light blocking members 150, which is the fixing bracket 122 of the first shaft 120 It can be implemented by varying the height at which the fixing bracket 132 of the and the second shaft 130 is installed.

On the other hand, the rotating light blocking member 160 installed on the second shaft 130 has a first position parallel to the fixed light blocking member 150 by rotation of the second shaft 130 and a second position protruding outward of the building. When it is switched to the first position, rotation is suppressed while the rear surface of the rotating light blocking member 160 is in close contact with the first shaft 120, and at this time, the four sides of the rotating light blocking member 160 are fixed It is made to have a structure that coincides with the four sides of the member 150 and is completely arranged in parallel with the fixed light blocking member 150.

In addition, when the rotation blocking member 160 is switched to the second position, each rotation blocking member 160 is based on the central portion so that the outer end 160a can protrude outward from the outer wall of the building as much as possible. A place close to the inner end 160b is installed to be fixed to the fixing bracket 122, and according to this structure, when the rotating light blocking member 160 is switched to the second position, a large change in the shape of the three-dimensional decoration The atmosphere can be expressed, and the wind flowing around the outer wall of the building can be introduced into the interior space.

The fixed light blocking member 150 and the rotating light blocking member 160 configured as described above may be made of a resin such as wood, metal, and fiber-reinforced plastic, and include a solar panel that generates electricity using solar energy. Can be configured.

On the other hand, the illuminance that detects the brightness of the indoor space and automatically rotates the rotating shading member 160 so that the detected brightness of the indoor space follows the preset brightness to automatically adjust the amount of sunlight entering the indoor space. A sensor 171 and an interactive controller 180 may be further included.

The illuminance sensor 171 is fixedly installed at an arbitrary position in the indoor space and is configured to detect the brightness of the indoor space.

The interactive controller 180 receives and stores a reference illuminance value for the brightness of an indoor space from a user or manager, and receives the measured illuminance value detected by the illuminance sensor 171 to compare the measured illuminance value and the reference illuminance value. After determining whether to open the light-emitting space 111 or block the light-emitting space 111 further, the second shaft 130 and the rotational light blocking member 160 are rotated through the control of the driving means 140. Done.

For example, when the measured illuminance value is less than the reference illuminance value, the interactive controller 180 rotates the light blocking member 160 in a second posture or position so that a greater amount of sunlight can be introduced into the room through the light-emitting space 111. When the measured illuminance value exceeds the reference illuminance value, the rotation shielding member 160 is rotated in the first posture or a posture close thereto so as to reduce the amount of incoming sunlight.

Meanwhile, the measured illuminance value may be determined as an average value of illuminance values detected for a preset time by the illuminance sensor 171.

For example, when the preset time is set to 10 minutes, the average value of the illuminance values detected for 10 minutes by the illuminance sensor 171 is compared with the reference illuminance value, and the rotational shading member 160 is controlled according to the result. If the average illuminance value is used as described above, it is possible to prevent the rotating light blocking member 160 from being frequently opened and closed according to changes in weather.

In addition, the interactive controller 180 controls the driving means 140 to open the rotating light blocking member 160 according to a preset sunrise time, and the driving means to close the rotating light blocking member 160 according to a preset sunset time. A time-based control function to control 140 may be included.

In addition, the interactive controller 180 may include a control function for each number of users that controls the driving means 140 to open the rotating light blocking member 160 when the number of occupants in the indoor space is greater than or equal to a preset reference number. A counter sensor 172 for detecting the actual number of occupants in the indoor space may be installed in the indoor space in response to the number-by-number control function.

In this case, the counter sensor 172 may be configured as a far-infrared sensor or an ultrasonic sensor that is installed at an entrance of an indoor space to generate a signal while responding to a person passing through the entrance.

In addition, the number of occupants may be determined as an average value of the number of persons detected during a preset time by the counter sensor 172.

For example, when the preset time is set to 10 minutes, the average value of the occupants for 10 minutes determined based on the signal detected by the counter sensor 172 is compared with the reference number, and according to the result, the rotating light blocking member 160 ) Is controlled, and in this way, when the average occupancy is used, it is possible to prevent the rotating light blocking member 160 from being frequently opened and closed by people coming and going.

The light blocking system according to the present invention configured as described above is formed in an integral structure with the building, so that separate installation is not required, and a plurality of fixed light blocking members 150 having a horizontal posture in a rectangular bar shape and rotation blocking The members 160 are regularly arranged vertically and horizontally on the outer wall of the building to form a three-dimensional decoration, and in particular, when the rotating light blocking member 160 is rotated to adjust the amount of sunlight or wind inflow, the outer end of the rotating light blocking member 160 Since (160a) protrudes from the outer wall of the building, it is possible to create a new atmosphere.

In addition, since the rotating light blocking member 160 protruding from the outer wall of the building provides a function of guiding the wind into the interior of the light-emitting space 111 while colliding with the wind, it is possible to create an environment more advantageous for indoor ventilation.

In addition, it is possible to realize a more comfortable living or office environment through interactive control that automatically controls the rotating light blocking member 160 in response to time, weather, and number of users.

The present invention is not limited to the specific preferred embodiments described above, and any person having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims can implement various modifications. Of course, such changes are within the scope of the claims.

<Explanation of symbols for major parts of drawings>
110: frame 111: mining space
120: first axis 121: support
122: fixing bracket 130: 2nd axis
131: holding part 132: fixing bracket
140: drive means 141: rotary link
142: connecting link 143: motor
150: fixed light blocking member 160: rotating light blocking member
171: illuminance sensor 172: counter sensor
180: interactive controller

Claims (12)

A frame 110 installed on the outer wall of a building and having a light-emitting space 111 open to allow sunlight to enter the interior;
A plurality of first shafts 120 fixedly installed on the frame 110 so as to have a structure that crosses the light-emitting space 111 in a vertical direction and is spaced apart from each other in a horizontal direction;
A plurality of materials coupled to the frame 110 so as to have a rotatable structure while extending in a direction parallel to the first axis 120 in the vicinity of the first axis 120 crosses the light-emitting space 111 2-axis 130;
A driving means 140 for rotating the second shaft 130 in a forward and reverse direction;
A plurality of fixed light blocking members 150 fixedly installed on each of the first shafts 120 so as to have an arrangement structure spaced apart from each other along the first shaft 120 and disposed to be distributed in the light-emitting space 111; And
It is fixedly installed on each of the second shafts 130 so as to have an arrangement structure that is spaced apart from each other along the second shaft 130 and positioned between the fixed light blocking members 150, and together with the second shaft 130 Three-dimensional decoration and lighting of the exterior wall of a building, characterized in that consisting of; a plurality of rotating light blocking members 160 made to be converted into a first position parallel to the fixed light blocking member 150 while rotating and a second position protruding outward of the building Shading system for adjustment. The method according to claim 1,
The fixed light blocking member 150 and the rotating light blocking member 160 have the same shape, but have a bar shape having a square cross section, and the first shaft 120 and the second shaft 130 to have a horizontal posture. A shading system for three-dimensional decoration and lighting control of the exterior wall of a building, characterized in that installed in. The method according to claim 1,
The first shaft 120 and the second shaft 130,
Post portions 121 and 131 having a rectangular cross section; And
A plurality of fixing brackets having a U-shaped cross-section with one side open so that the fixed light blocking member 150 or the rotating light blocking member 160 is inserted and fixed, and fixedly installed on one side of the support portions 121 and 131 (122, 132); Shading system for three-dimensional decoration and light control of the exterior wall of a building comprising a. The method according to claim 1,
The driving means 140,
A rotation link 141 installed on each second shaft 130 so as to rotate together with the second shaft 130;
A connecting link 142 connecting the rotating links 141 installed on each of the second shafts 130 to each other; And
A motor 143 that is connected to any one of the second shafts 130 and rotates the second shaft 130 of the plurality of second shafts 130; and the remaining rotational shaft when one of the second shafts 130 rotates A light shielding system for three-dimensional decoration and lighting control of a building exterior wall, characterized in that it is made to rotate together. The method according to claim 1,
When the rotating light blocking member 160 is switched to the first position by the rotation of the second shaft 130, the rear surface of the rotating light blocking member 160 is in close contact with and supported by the first shaft 120. Shading system for three-dimensional decoration and lighting control of the exterior wall of a building. The method according to claim 1,
The rotation shielding member 160 is a light shielding system for three-dimensional decoration and light control of a building exterior wall, characterized in that a location close to the inner end (160b) relative to the center is fixed to the second shaft (130). The method according to claim 1,
An illuminance sensor 171 for detecting the brightness of the indoor space; And
Adjusting the amount of sunlight entering the indoor space while rotating the rotating light blocking member 160 through the control of the driving means 140 so that the measured illuminance value detected by the illuminance sensor 171 follows a preset reference illuminance value. An interactive controller 180 having a control function for each illuminance; a light shielding system for three-dimensional decoration of an exterior wall of a building and lighting control, characterized in that it further comprises. The method of claim 7,
The measured illuminance value is an average value of illuminance values detected for a preset time by the illuminance sensor 171. A light shielding system for three-dimensional decoration and lighting control of a building exterior wall. The method according to claim 1,
Time-based control function for controlling the driving means 140 to open the rotating light shielding member 160 according to a preset sunrise time, and controlling the driving means 140 to close the rotating light blocking member 160 according to a preset sunset time An interactive controller (180) having a; Shading system for three-dimensional decoration and light control of the exterior wall of a building, characterized in that it further comprises. The method according to claim 1,
A counter sensor 172 detecting an actual occupancy of the indoor space; And
When the number of occupants detected by the counter sensor 172 is greater than or equal to a preset reference number, an interactive controller 180 having a control function for each number of users controlling the driving means 140 to open the rotating light blocking member 160; A light-shielding system for three-dimensional decoration and lighting control of the exterior wall of a building, comprising: The method of claim 10,
The counter sensor 172 is a light-shielding system for three-dimensional decoration and lighting control of a building exterior wall, characterized in that the counter sensor 172 is installed at the entrance of an indoor space and configured of a far-infrared sensor or an ultrasonic sensor that generates a signal in response to a person passing through the entrance. The method of claim 10,
The number of occupants is a light shielding system for three-dimensional decoration and lighting control of a building exterior wall, characterized in that the number of people in the room is an average value of the number of people detected during a preset time by the counter sensor 172.

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