JP2021068524A - Dimming control mechanism - Google Patents

Abstract

To obtain a sunlight environment desired by people in a building.SOLUTION: A dimming control mechanism 100 includes a window 22 provided in an opening for collecting sunlight P in a room 16, a camera 36 installed in a building 10 that captures a person H in the room 16, and a control device 70 that controls the transmittance of a dimming film 30 of the window 22 through which sunlight P that hits the person H passes when the movement of the person H is detected by acquiring the captured image captured by the camera 36 and the movement of a right hand HR raising from the bottom to the top is detected.SELECTED DRAWING: Figure 5

Description

The present invention relates to a dimming control mechanism.

Patent Document 1 discloses a technique relating to a lighting device that detects a state of a person existing in a lighting space and controls dimming of a lighting fixture in a room based on the detection result.

In Patent Document 2, the slat angle and the length of the blind are changed according to the human information in the living space sensed by the human body sensor, or the amount of incident light is adjusted by the transmittance of the dimming glass. The technology related to optical devices is disclosed.

Patent Document 3 includes an image recognition device that recognizes an operation pattern of a moving image captured by an imaging means, an electrical device operation control unit that controls the operation of an electrical device using this image recognition device, and an electrical device operation control unit. Technologies related to on-board electrical appliances, image recognition programs, and semiconductor devices are disclosed.

JP-A-2009-238400 Japanese Unexamined Patent Publication No. 1996-060956 Japanese Unexamined Patent Publication No. 2010-09558

For example, you may want to keep the illuminance inside a building and keep it out of the sun so that it is not dazzling. Alternatively, you may want to expose yourself to the sun so that others do not dazzle.

However, the techniques of Patent Documents 1 to 3 are such that the sunlight in the building is prevented from being exposed to sunlight or only oneself is exposed to sunlight, which is desired by a person in the building. It does not consider realizing the light environment of.

In view of the above facts, an object of the present invention is to obtain a sunlight light environment desired by a person in a building.

The first aspect is a plurality of light-shielding portions provided in an opening for collecting sunlight in the building and having a variable light-shielding rate, an imaging device provided in the building to image a person in the building, and the imaging. A control device that acquires a captured image captured by the device, detects the motion of the person, and when a predetermined motion is detected, controls the shading rate of the light-shielding portion through which sunlight hitting the person passes. It is a dimming control mechanism provided.

In the dimming control mechanism of the first aspect, when a person performs a predetermined operation, the light-shielding rate of the light-shielding portion through which the sunlight hitting the person passes is controlled by the control device. Therefore, the sunlight environment desired by the person in the building can be obtained.

In the second aspect, the control device acquires the position information and time information of the person in the building, and based on the acquired position information and time information of the person, the sunlight hitting the person passes through. The dimming control mechanism according to the first aspect, which determines a light-shielding portion.

In the dimming control mechanism of the second aspect, it is possible to easily determine the light-shielding portion through which the sunlight hitting the person passes by acquiring the position information and the time information of the person in the building.

The third aspect is the first or second aspect, wherein the light-shielding portion has a glass portion through which light is transmitted and a light control film provided on the glass portion and capable of increasing or decreasing the transmittance. The dimming control mechanism described.

In the dimming control mechanism of the third aspect, the shading rate can be easily controlled by increasing or decreasing the transmittance of the dimming film.

According to the present invention, it is possible to obtain a sunlight light environment desired by a person in a building.

It is a perspective view of the building of one embodiment. It is sectional drawing which shows typically the vertical sectional view of the building of one Embodiment. It is sectional drawing and block diagram of the glass part of a window part. It is explanatory drawing explaining the dimming control mechanism of one Embodiment. It is a block diagram of the dimming control mechanism of one Embodiment. It is a flowchart of a dimming control routine.

<Embodiment>
The dimming control mechanism according to the embodiment of the present invention will be described.

[Constitution]
First, the configuration of the dimming control mechanism of the present embodiment and the building provided with the dimming control mechanism will be described.

(Building composition)
As shown in FIGS. 1 and 2, the building 10 is constructed on a foundation (not shown) provided on the ground G (see FIG. 2). Although FIG. 2 is a cross-sectional view, the hatching (diagonal line) representing the cross section is omitted for the sake of clarity.

The building 10 has a roof portion 12 and an outer peripheral wall portion 14. The roof portion 12 of the present embodiment is a sloping roof. The roof portion 12 is not limited to a sloping roof and may be a flat roof. The roof portion 12 is formed with an opening 20 for collecting the light of the sun T (hereinafter referred to as “sunlight P”) in the room 16 (see FIG. 2). A plurality of window portions 22 are provided in the opening portion 20 in a grid pattern. In the explanatory view of FIG. 4, which will be described later, the opening 20 and the window 22 are shown along the horizontal direction for the sake of clarity.

As shown in FIG. 3, the window portion 22 as an example of the light-shielding portion has a window frame (not shown) and a glass portion 24 provided in the window frame. In the present embodiment, the glass portion 24 has a double glass structure composed of two transparent glass plates 23 and 25.

A light control film 30 is attached to the inner surface of the outer glass plate 23 forming the glass portion 24 on the indoor 16 side. The light control film 30 may be attached to at least one of the glass plates 23 and 25. Further, the glass portion 24 may be a single glass instead of a double glass, or may be made of a triple or more glass.

The transmittance of the light control film 30 increases or decreases depending on the applied voltage. Specifically, when the voltage applied to the light control film 30 increases, the transmittance of the light control film 30 increases and the glass portion 24 becomes transparent. On the other hand, when the voltage applied to the light control film 30 becomes small, the transmittance of the light control film 30 decreases, and the glass portion 24 becomes like frosted glass. When no voltage is applied to the light control film 30, the transmittance of the light control film 30 is minimized.

The light control film 30 is electrically connected to the control unit 50 (see also FIG. 5). Further, a power source (not shown) such as a commercial power source is connected to the control unit 50. The control unit 50 controls the voltage applied to the light control film 30 from the power source. That is, the transmittance of the light control film 30 is controlled by the control unit 50.

In the building 10 of the present embodiment, the maximum voltage is usually applied to the light control film 30 to maximize the transmittance of the light control film 30, and the glass portion 24 is in a transparent state. Therefore, normally, the sunlight P is lit in the room 16.

As shown in FIG. 2, a plurality of cameras 36 as an example of the imaging device are provided in each of the chambers 16, and in the present embodiment, they are provided in the corners of the chamber (see also FIGS. 4 and 5). The camera 36 of the present embodiment captures a moving image. In the present embodiment, the cameras 36 are provided at a plurality of locations, and in the present embodiment, they are provided at four locations, but the present invention is not limited to this. At least one camera 36 may be provided in the room 16.

Further, the room 16 is provided with a motion sensor 34 (see also FIGS. 4 and 5) for detecting the position of the person H in the room 16.

(Dimming control mechanism)
As shown in FIG. 5, the dimming control mechanism 100 includes a control device 70, the above-mentioned motion sensor 34, a camera 36, and a dimming film 30. In the dimming control mechanism 100, when the person H performs a predetermined operation, in the present embodiment, when the right hand HR is raised from the bottom to the top, the adjustment of the window portion 22 through which the sunlight P corresponding to the person H who raised the right hand HR passes. The transmittance of the optical film 30 is minimized so that the sunlight P does not hit the person H who raised the right hand HR.

The hardware configuration of the control device 70 that constitutes the dimming control mechanism 100 includes a CPU (Central Processing Unit) (not shown), a ROM (Read Only Memory) that stores programs for realizing each processing routine, and data. It is composed of a computer including a RAM (Random Access Memory) for temporarily storing, a memory as a storage means, a network interface, and the like. The control device 70 may be configured by using a plurality of servers, a cloud, or the like.

Further, as shown in FIG. 5, the control device 70 functionally includes an acquisition unit 52, a storage unit 54, and a control unit 50.

The acquisition unit 52 constituting the control device 70 acquires the captured image captured by the camera 36, the position information and the time information detected by the motion sensor 34. The time information is the current time including the month, day, hour, and minute, and in the present embodiment, it is acquired from the NTP server 38 via the Internet 37.

The storage unit 54 constituting the control device 70 controls the voltage applied to the dimming film 30, that is, controls the transmittance of the dimming film 30, according to the captured image, position information, and time information (current time). A control program and a database (hereinafter referred to as "DB") for performing the operation are stored. The DB stored in the storage unit 54 has a relationship between the time information (current time) and the window unit 22 through which the sunlight P corresponding to the person H in the area 18 passes through each area 18 of the room 16 shown in FIG. Was obtained in advance by computer simulation and created into a database.

The area 18 is a plan view in which the room 16 is virtually divided into predetermined areas in a grid pattern.

Further, the "sunlight P that hits the person H" is "the sunlight P that passes between the position of the head of the child standing in the area 18 and the position of the head of the adult". Specifically, it is sunlight P passing between 0.9 m and 2.0 m from the floor surface of the area 18.

The control unit 50 constituting the control device 70 is the sun that hits the person H based on the captured image, the position information and the time information (current time) acquired by the acquisition unit 52, and the DB stored in the storage unit 54. The window portion 22 (see FIG. 4) through which the light P passes is specified, and the transmittance of the light control film 30 (see FIG. 3) of the specified window portion 22 is controlled.

In the present embodiment, the control unit 50 is based on the captured image of the camera 36 acquired by the acquisition unit 52, the position information and the time information (current time) of the person H (see FIG. 4) detected by the motion sensor 34. Then, the control program and the DB stored in the storage unit 54 are read out, and as shown in FIG. 4, the window unit 22 through which the sunlight P hitting the person H passes so that the sunlight P does not hit the person H. Minimize the transmittance of the light control film 30 (see FIG. 3).

(Dimming control routine)
Next, specific dimming for minimizing the transmittance of the dimming film 30 of the window portion 22 through which the sunlight P hitting the person H passes according to the image information, the position information and the time information (current time). An example of the control routine will be described with reference to the flowchart of FIG.

In step S100, the acquisition unit 52 (see FIG. 5) is captured by the camera 36 (see FIGS. 2, 4 and 5) and the motion sensor 34 (see FIGS. 2, 4 and 5). Acquire the detected position information and time information.

In step S200, the control unit 50 (see FIG. 5) detects a predetermined operation of the person H (see FIG. 4) from the captured image. In the present embodiment, the movement of the person H raising the right hand HR from the bottom to the top is detected (see FIG. 4). It should be noted that image processing techniques such as optical flow and template matching can be used to detect a predetermined motion of the person H from the captured image. Further, AI technology such as deep learning may be used.

In step S300, the control unit 50 (see FIG. 5) determines the area 18 in which the person H is located based on the position information of the person H (see FIG. 4) detected by the motion sensor 34 (see FIGS. 4 and 5). (See FIG. 4) is identified.

In step S400, the control unit 50 (see FIG. 5) reads the DB stored in the storage unit 54 from the time information (current time) and the specified area 18 (see FIG. 4), and corresponds to the person H in the area 18. The window portion 22 through which the sunlight P passes is specified.

In step S500, the control unit 50 (see FIG. 5) reduces the voltage of electricity applied to the light control film 30 (see FIG. 3) of the identified window unit 22 (see FIG. 4) to minimize the transmittance. ..

(Action and effect)
Next, the operation and effect of this embodiment will be described.

In the dimming control mechanism 100, when the person H performs a predetermined operation, in the present embodiment, when the right hand HR is raised from the bottom to the top, the adjustment of the window portion 22 through which the sunlight P corresponding to the person H who raised the right hand HR passes. The transmittance of the optical film 30 is minimized. As a result, the glass portion 24 of the window portion 22 becomes frosted glass, and the sunlight P does not hit the person H who raised the right hand HR. In this way, it is possible to prevent the sunlight P from shining on oneself (person H) so as not to dazzle while maintaining the illuminance of the room 16. That is, the light environment of the sunlight P desired by the person H in the room 16 can be obtained.

Further, by acquiring the time information (current time), for example, the azimuth angle and altitude of the sun T are measured by a sunshine sensor or the like to specify the window portion 22 through which the sunlight P hitting the person H passes. , The azimuth and altitude of the sun T can be easily determined.

Further, since the position information of the person H is detected by the motion sensor 34, the position information can be easily acquired as compared with the case where the position information is obtained from the captured image, for example.

In addition, since the relationship between the window portion 22 through which the sunlight P corresponding to the person H in the area 18 passes and the time information (current time) is stored in a database for each area 18 of the room 16, the person The window portion 22 through which the sunlight P hitting H passes can be easily determined by comparing with a case where the window portion 22 is calculated and obtained every time the person H raises the right hand HR, for example.

Further, the shading rate can be easily controlled by adjusting the voltage applied to the light control film 30 of the glass portion 24 of the window portion 22.

[Other]
The present invention is not limited to the above embodiment.

For example, in the above embodiment, the “sunlight P that hits the person H” is the “sunlight P that passes between the position of the head of the child standing in the area 18 and the position of the head of the adult”. Specifically, it was "sunlight P passing between 0.9 m and 2.0 m from the floor surface of the area 18". Not limited to this. The "sunlight P passing through the range between the position of the head of the child standing in the area 18 and the position of the head of the adult" may be set to a setting other than 0.9 m to 2.0 m. Further, for example, only the sunlight P that hits the face of an adult may be targeted. Further, the posture information of the person H may be acquired from the captured image, and the range of the sunlight P that hits the person H may be adjusted. For example, the range may be adjusted depending on whether the person H is standing or sitting.

Further, for example, in the above embodiment, the relationship between the window portion 22 through which the sunlight P corresponding to the person H in the area 18 passes and the time information (current time) is preliminarily computer-simulated for each area 18 of the room 16. It was sought by and made into a database, but it is not limited to this. The window portion 22 through which the sunlight P hitting the person H passes may be sequentially calculated and obtained from the time information (current time) and the position information (area 18 where the person H is present).

Further, instead of the time information (current time), the azimuth angle and altitude of the sun P are measured by a sunshine sensor or the like, and the sunlight P hitting the person H passes from the measurement result and the position information (area 18 where the person H is). The window portion 22 may be obtained by creating a database or sequentially calculating.

Further, for example, in the above embodiment, the area 18 in which the person H is present in the room 16 is specified by the motion sensor 34, but the present invention is not limited to this. For example, the image captured by the camera 36 may be image-analyzed to identify the area 18 in which the person H is located.

Further, in the above embodiment, the dimming control mechanism 100 minimizes the transmittance of the dimming film 30 of the window portion 22 through which the sunlight P hitting the person H passes when the person H raises the right hand HR from the bottom to the top. , The person H who raised the right hand HR was controlled so that the sunlight P would not hit, but the present invention is not limited to this.

For example, normally, without applying a voltage to the light control film 30, the transmittance of the light control film 30 is minimized so that the glass portion 24 is in a frosted glass state, and the person H performs a predetermined operation, for example, the right hand HR. When lowered from the top to the bottom, the transmittance of the light control film 30 of the window portion 22 through which the sunlight P hitting the person H passes is maximized, and even if the person H whose right hand HR is lowered is controlled so that the sunlight P hits. Good. In other words, the sunlight P may be applied only to oneself (person H) so that other people in the room 16 are not dazzled.

Alternatively, the transmittance of the light control film 30 of the window portion 22 on the temporary line connecting the palm and the eyes when the person H holds the right hand HR or the left hand HL (see FIG. 5) in front of the face is minimized or maximized. You may try to do it. The above-mentioned virtual line may be obtained, for example, by analyzing the captured image and detecting the three-dimensional coordinates of the position of the palm and the position of the eyes of the person H.

Further, when the person H moves in the room 16, the window portion 22 that maximizes or minimizes the transmittance of the light control film 30 is moved accordingly, and the sunlight P does not hit even if the person H moves. The state of being exposed to the sunlight P may be maintained.

Alternatively, when a person raises a predetermined movement, for example, the left hand HL (see FIG. 5) from the bottom to the top, the transmittance of the daylighting film 30 of all the windows 22 is minimized, and the entire room 16 is covered. The sunlight P may be taken. Further, when a person performs a predetermined operation, for example, when the person H lowers the left hand HL from the top to the bottom, the transmittance of the light control film 30 of all the window portions 22 is maximized, and the sunlight P is lit in the entire room 16. It may not be done.

Further, the shading rate of the light control film 30 of the window portion 22 is not limited to the minimum and maximum, but may be an intermediate value between them. When the median value is set, it may be determined based on the movement of the person H, time information (current time), and the like. The movement of the person H is, for example, the height or angle at which the right hand HR or the left hand HL is raised, and when the right hand H is horizontal, the shading rate is set between the minimum and the maximum. Further, the time information (current time) is, for example, in the morning and evening, the shading rate is set to an intermediate value.

Further, in the above embodiment, the shading rate of the window portion 22 of the opening 20 is adjusted by the light control film 30, but the present invention is not limited to this. For example, the slat angle may be adjusted with a variable blind or the like.

Further, in the above embodiment, the plurality of light-shielding portions having a variable light-shielding rate are provided on the roof portion 12 of the building 10, but the present invention is not limited to this. For example, it may be provided in an opening for collecting sunlight P, such as a window provided in the outer peripheral wall portion 14 of the building 10.

Further, the building is composed of an endodermis representing an inner outer wall and an exodermis representing an outer wall located outside the endodermis, and has an opening for illuminating sunlight in the exodermis and illuminating sunlight in the endodermis. A plurality of light-shielding portions having a variable light-shielding rate may be provided on at least one of the openings.

Further, it can be carried out in various embodiments without departing from the gist of the present invention.

10 Building 16 Indoors (Example inside the building)
20 Opening 22 Window (an example of light-shielding part)
24 Glass part 30 Dimming film 36 Camera (an example of imaging device)
70 Control device 100 Dimming control mechanism
H people
P sunlight

Claims (3)

Multiple light-shielding parts with variable light-shielding rates, which are provided in the openings that collect sunlight in the building,
An imaging device provided in the building to image a person in the building,
A control device that acquires an image captured by the imaging device, detects the motion of the person, and when a predetermined motion is detected, controls the shading rate of the light-shielding portion through which sunlight hitting the person passes. ,
Dimming control mechanism equipped with. The control device is
The position information and the time information of the person in the building are acquired, and the light-shielding portion through which the sunlight hitting the person passes is determined based on the acquired position information and the time information of the person.
The dimming control mechanism according to claim 1. The light-shielding portion
The glass part through which light passes and
A light control film provided on the glass portion and capable of increasing or decreasing the transmittance, and
have,
The dimming control mechanism according to claim 1 or 2.

Images