JP2022061079A - Illumination control system - Google Patents

Abstract

To provide an illumination system capable of achieving a further reduction in power consumption by controlling turning-on and turning-off of an illumination device according to the number of human existing in the illumination area of a lighting fixture.SOLUTION: One aspect of the present invention is an illumination control system including: a lighting fixture illuminating an illumination space; a human detection sensor to detect humans in the illumination space; and a control unit to control the lighting fixture based on a detection signal from the human detection sensor. The control unit divides the illumination space into a plurality of blocks so that a lighting fixture corresponding to each block can be controlled. The human detection sensor can detect the number of human existing in each of the blocks. An illumination device is controlled based on the number of human detected for each of the blocks by the human detection sensor.SELECTED DRAWING: Figure 7

Description

The present invention relates to a lighting control system.

A lighting control system that reduces the power consumption of a lighting fixture by turning off the lighting fixture when no person is present in the irradiation area of the lighting fixture has been conventionally known. Patent Document 1 discloses a technique of a lighting control system that controls the lighting or extinguishing of a lighting fixture for each block by dividing the detection range by an image sensor into a plurality of blocks and detecting the presence or absence of a person in each block. Has been done.

JP-A-2019-117812

In the lighting control system disclosed in Patent Document 1, it is possible to control the lighting or extinguishing of the lighting fixture for each block, but the number of people in each block is not detected. Therefore, even if there is only one person in one block, the lighting fixtures in the block are lit with high illuminance, which is not preferable from the viewpoint of reducing the power consumption of the lighting fixtures.

An object of the present invention is to provide a lighting system capable of reducing power consumption by controlling lighting of a lighting device according to the number of people in the lighting area of the lighting equipment.

The lighting control system according to one aspect of the present disclosure controls a lighting fixture that controls a lighting space, a person detection sensor that detects a person in the lighting space, and the lighting fixture based on a detection signal from the person detection sensor. A lighting control system including a control device, wherein the control device can divide the lighting space into a plurality of blocks and control a lighting fixture corresponding to each block, and the person detection sensor can be used as a control device. The number of people existing in each block can be detected, and the lighting device controls based on the number of people detected in each block by the person detection sensor.

According to the embodiment of the present disclosure, a lighting system capable of further reducing power consumption is provided by controlling lighting and extinguishing of a lighting device according to the number of people in the lighting area of the lighting equipment. can do.

It is a block diagram of a lighting control system. It is explanatory drawing of the block of an illumination area. It is explanatory drawing of the modification of the block of an illumination area. It is explanatory drawing of the image sensor. It is explanatory drawing of the existence rate. It is explanatory drawing about the detection of the person between blocks. It is explanatory drawing about the control of the lighting area in a block according to the presence rate. It is explanatory drawing about the control of the lighting area between blocks according to the presence rate. It is explanatory drawing about the control of the lighting area in a block according to the presence rate which concerns on Embodiment 3. FIG. An explanatory diagram of image recognition that masks a passage.

Hereinafter, the lighting control system according to the embodiment of the present invention will be described in detail with reference to the drawings. However, the embodiments shown below exemplify a lighting control system for embodying the technical idea of the present invention, and do not specify the present invention as these, but other embodiments included in the claims. It is equally applicable to those of embodiments.

[Embodiment 1]
The lighting control system according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 10.

FIG. 1 is a block diagram of a lighting control system. The lighting control system includes a lighting controller 10, a personal computer (hereinafter referred to as "PC") 11, a terminal A12, a terminal B13, a terminal C14, a terminal D15, an image sensor A16, an image sensor B17, and the like. The lighting controller 10 is connected to the PC 11 by the LAN 18. Further, the lighting controller 10, the terminals 12 to 15, and the image sensors 16 to 17 are connected by, for example, a communication gland 19 composed of a serial communication line. The LAN 18 may be, for example, a wired LAN such as Ethernet. Further, the lighting system may connect at least a part of each configuration by wireless communication.

A plurality of lighting devices are connected to each of the terminals 12 to 15, and the plurality of lighting devices are individually controlled to turn on, off, dimming, toning, and the like. The image sensor A16 is provided at a position corresponding to a lighting fixture connected to the terminal A12, the terminal B13, the terminal C14, and the terminal D15 via the signal line 22, and the image sensor B16 is connected to the terminal B13. The image sensor B17 is provided at a position corresponding to the lighting fixture connected to the terminal E21. Similarly, the image sensor B17 is provided at a position corresponding to the lighting fixture connected to the terminal E21.

The image sensor A16 is arranged in a lighting space of a lighting fixture connected to a terminal 12, a terminal B13, a terminal C14, and a terminal D15 via a signal line 22 (hereinafter omitted), and a person in the lighting space. It is possible to detect the number of people. In detecting such a person, the image sensor A16 may detect the states of three types of people, "presence", "movement", and "absence", and the number of people in each state, at least for each predetermined block. can.

"Presence" is a state in which a person is seated in a predetermined seat in each block or is stopped without moving for a set time or longer, and the number of people in such a state is the number of "presence" in the block. Is. "Absent" is a state in which no one is seated in a predetermined seat in each block, and in such a state, the number of corresponding blocks is 0. "Movement" is a state in which no person is seated in each block, but a person is moving away from or toward a predetermined seat. The image sensor A16 can also detect the number of people moving in the block in the "existing" state.
The "presence" state includes a person who is standing still without sitting in a seat, a state before standing up from the seat and moving, and a person who has moved and stopped.
Further, the "absent" state is a state in which the state of the person in the block excludes the "present" state and the "moving" state.

If there is even one person seated in each block, it is in the "presence" state. In this case, the number of people seated is counted by the image sensor A16, and the number of people is detected. On the other hand, when no one is seated in each block, it is "absent", and the number of seated people in the corresponding block is 0. In addition, the number of people moving in each block is counted as the number of people moving. The image sensor B17 is the same as the image sensor A16.

The lighting controller 10 receives information on the “presence”, “movement”, “absence” of each block and the number of people from each image sensor A16 via the communication line 19, and each terminal is in accordance with the information on the number of people. Controls such as lighting, extinguishing, dimming, and toning of the lighting fixtures connected to 12 to 15.

The lighting controller 10 is connected to the PC 11, and the system administrator operates the PC 11 to set various settings of the lighting system (for example, the setting of the detection area of the image sensor, the setting of the lighting fixture to be controlled for the detection area, and the lighting for the detection state. It is possible to set the control state of the luminaire and monitor the state of the lighting system (for example, the dimming rate and color temperature state of the luminaire, the state of the detection area of the image sensor and the number of people to be detected, etc.). For example, the block of each illumination area can be set by the PC 11.

FIG. 2 is an explanatory diagram of a block of a lighting region, and describes a lighting region of the lighting fixtures of the terminal A12 to D15, that is, a detection range of the image sensor A16. Since the lighting range of the lighting fixtures of other terminals is the same as that of the terminals A12 to D15, the lighting areas of the terminals A12 to D15 will be exemplified below to support other terminals. The description of the illumination area to be used will be omitted.
Although FIG. 2 shows the size of one side as 7.2 m, it is an example and is not limited to this size.

In FIG. 2, the terminal 12 to the terminal D15 have 16 lighting fixtures, and the states and the number of people “existing”, “moving”, and “absent” in the presence in these lighting areas are shown. The image sensor A16 detects each block. Although not particularly limited, in FIG. 2, the image sensor A16 is arranged in the center of the corresponding lighting space, and the lighting space is divided into four vertical and horizontal blocks centered on the image sensor A16.

The block A is provided with four lighting fixtures A1, A2, A3 and A4 in two vertical rows and two horizontal rows. The block B is provided with four lighting fixtures B1, B2, B3 and B4 in two vertical rows and two horizontal rows. The block C is provided with four lighting fixtures C1, C2, C3 and C4 in two vertical rows and two horizontal rows. Further, the block D is provided with four lighting fixtures D1, D2, D3 and D4 in two vertical rows and two horizontal rows.

The lighting space can be divided into one or more blocks in units of, for example, 8 vertical × 8 horizontal = 64 squares. In the example of FIG. 2, the lighting space is divided into four blocks A, B, C and D, but the present embodiment is not limited to this, and the number of blocks and the method of dividing the blocks are not limited to this. , Not limited to this. For example, FIG. 3 is an explanatory diagram of a modified example of a block in a lighting area, and various modes can be adopted depending on the layout in the lighting space, including the division method shown in FIGS. 3A and 3B. For example, in FIG. 3A, the illumination area is divided into three blocks, and in FIG. 3B, the illumination area is divided into six blocks. Further, the number and arrangement of the lighting fixtures in each block can be various depending on the layout in the lighting space. The lighting space is in units of 8 vertical × 8 horizontal = 64 squares, but the present embodiment is not limited to this, and the squares are not limited to this.

FIG. 4 is an explanatory diagram of the image sensor A16. The image sensor A16 is arranged above the center of the lighting space, detects an image consisting of the area occupied by the upper body of the person in the image seen from the upper part of the person existing in each block, and detects the person by image recognition. At the same time, it is possible to track the movement of a person and detect the mode of movement. In such image recognition, the mode of sitting or moving of a person is detected not only from the shape of the person but also from the movement of the person. More specifically, the human detection is the position of the person who detects the image detected as a person, for example, the foot of the center of gravity of the image of the upper body seen from the upper part of the person, that is, the point closest to the image sensor A16.

The image sensor A16 is set so as to be able to detect the presence / absence of a person and the mode of movement in the entire lighting space. The image sensor A16 is installed at a height of, for example, 2 m from the floor surface of the lighting space. Since a wide-angle lens is provided in the camera portion of the image sensor A16, it is possible to shoot a wide range. Although not particularly limited, for example, an angle of view of about 65 ° in the vertical direction, that is, about 130 ° horizontally is secured. In order to enable shooting in a wider range, for example, a necessary image range may be taken out by using a wide-angle lens capable of shooting a range of 185 ° with respect to the vertical direction. Further, a wide range of images may be taken by increasing the height of the image sensor A16 from the floor surface without using a wide-angle lens.

The resolution of the camera unit 30 of the image sensor A16 is, for example, SXGA (1280 × 1024 pixels). The effective range of the image in this case is 1024 x 1024 pixels. As shown in FIG. 4, the area photographed by the image sensor A16 is, for example, 9 m × 9 m. The part of the shooting area that is not used to determine the presence or absence of a person is masked.

FIG. 5 is an explanatory diagram of the presence rate, and exemplifies a place where there are a person 25 who is seated in the lighting space and a person 26 who is moving. Block A is "in" and the number of seated people is five. Block B is "absent." Block C is "in" and the number of seated people is three. Block D is "movement", and the number of people to move is one. The attendance rate is the ratio of the number of seated people to the capacity set for each block. Therefore, in the case of FIG. 4, for example, when the capacity of each block is 6 people, the presence rate is 5/6 = 83% for block A, 0/6 = 0% for block B, and 3/6 for block C. = 50%, block D is 0/6 = 0%. There is one person in the block D who is moving, but since the number of seated people is O, the attendance rate is 0%.

Since the lighting controller 10 transmits a time adjustment signal to each terminal 12 to 15 and each image sensor A16 to image sensor B17, an accurate time is set for each terminal and each image sensor. Therefore, in each of the image sensors A16 to B17, the number of people information for each hour is detected in real time, so that the lighting controller 10 uses the number of people information to display each lighting fixture in real time via the terminals 12 to 15. Can be controlled. For example, a time stamp is added to the number of people information detected by each image sensor A16 to B17. For example, the number of people information includes a state of "existence", "movement", and "absence", the number of people in that state, an attendance rate, and a time stamp. The lighting controller 10 may be configured such that the image sensors A16 to the image sensor B17 calculate the presence rate, but the present invention is not limited to this, and for example, the lighting controller 10 calculates the presence rate. You may.

When the lighting controller 10 detects the "presence" of a block having the image sensors A16 to B17, the lighting controller 10 periodically collects information on the number of people and the presence / absence movement information of the block from the image sensors A16 to the image sensor B17. do. The information collection period and cycle are set in the lighting controller 10 by the PC 11. The lighting controller 10 manages the collected number of people information and the absence / absence movement information for each hour.

In the "absent" block, one or more predetermined lighting fixtures are turned on, and in the "absent" block, all the lighting fixtures are turned off. Also, in the "moving" block where there are no people seated but there are people moving, the lighting fixtures are controlled to be lit so that they are dimmed to, for example, 5%, turned off after a predetermined time, and then moved. When the person who is seated is seated in a predetermined seat, the light of the block corresponding to the seated position is turned on.

For example, in block D of FIG. 5, which is a “moving” block, the luminaire is 5% dimmed. The dimming rate in the "moving" block is not limited to 5%, and may be, for example, 40% or 50%, and when the "in" illuminance is set to 700 lux. In "movement", it can be set to, for example, 300 lux, and can be appropriately set between, for example, about 5% to 50%. Further, in the block B of FIG. 5, which is the “absent” block, the lighting fixture is turned off. Further, the illuminance of the luminaire in "in" is not limited to 700 lux, but may be 500 lux, for example, and can be appropriately set in the range of illuminance of, for example, about 300 to 1000 lux.

FIG. 6 is an explanatory diagram for detecting a person between blocks. When a person exists across two or more areas, the person exists in the area where the point of the image closest to the image sensor exists from the center of gravity of the image recognized by the person in each area. Detected as something to do. In the example of FIG. 6, a person 27 exists between the block A and the block B, but the point of the image recognized by the person 27, for example, the image closest to the image sensor from the center of gravity of the image of the upper body of the person is. Since it exists in the block A, it is determined that the person 27 exists in the block A.

[Example 1]
The lighting control system of the first embodiment will be described with reference to FIG. 7. FIG. 7 is an explanatory diagram for controlling the lighting area in the block according to the presence rate. FIG. 7A illustrates the movement of a person by lighting control according to the presence rate. FIG. 7B is an explanatory diagram of lighting control according to the presence rate. In the present embodiment, a free address, that is, a lighting fixture that lights up in each block according to the presence rate of each block in a lighting space such as an office or a library reading room where each person can freely select a seat. An aspect of controlling the number will be described. In FIG. 7, the lighting fixture in the gray area is turned off, and the lighting fixture in the white region is turned on.

In FIG. 7, the capacity of each block, that is, the denominator of the presence rate is 6 people, and the number of lighting fixtures in each block is 4. In a block with an attendance rate of 40% or more, all lighting fixtures, that is, four lighting fixtures are turned on. In a block with an attendance rate of 20% or more and less than 40%, half of the luminaires, that is, two luminaires are lit. In blocks with an attendance rate of less than 20%, 25% of the lighting fixtures are turned on, that is, one lighting fixture is turned on, and in absent blocks, all lighting fixtures are turned off. The number of seated people is 0, and in the "moving" block where there are moving people, the lighting fixtures are controlled to be lit by, for example, 5% dimming as described above. The arrangement of the lighting equipment in each block shall be the arrangement of the lighting equipment as shown in FIG.

In FIG. 7, the control of the number of lighting fixtures according to the presence rate in each block is as follows. Since the presence rate of the A block is 3/6 = 50%, which corresponds to a block having a presence rate of 40% or more, all the lighting fixtures, that is, four lighting fixtures are turned on. Since the presence rate of the B block is 1/6 = 17%, which corresponds to a block having an presence rate of less than 20%, 25% of the number, that is, one lighting fixture is lit. The presence rate of the C block is 2/6 = 33%, which corresponds to a block having an presence rate of 20% or more and less than 40%, and half of the lighting fixtures, that is, two lighting fixtures are lit. Since the D block is "absent", all lighting fixtures are turned off.

As a result, as shown in FIG. 7B, each lighting fixture is controlled to be turned on and off. That is, in the A block, all the lighting fixtures A1 to A4 are turned on, in the B block, only the lighting fixture B1 is turned on, B2 to B4 are turned off, and in the C block, only the lighting fixtures C1 and C2 are turned on. It is turned on, the lighting fixtures C3 and C4 are turned off, and in the D block, all the lighting fixtures D1 to D4 are controlled to be turned off.

As shown in FIGS. 7A and 7B, when the lighting fixtures to be lit are automatically selected according to the presence rate and the arrangement of seated people, the people seated in each block are placed in each block. Move to the place where the lighting equipment inside is lit. In this way, by controlling the number of lighting fixtures to be lit according to the presence rate, it is possible to reduce the power consumption of the lighting fixtures.

[Example 2]
The lighting control system of the second embodiment will be described with reference to FIG. FIG. 8 is an explanatory diagram for controlling a lighting area between blocks according to the presence rate. FIG. 8A illustrates the movement of a person by lighting control according to the presence rate. FIG. 8B is an explanatory diagram of lighting control according to the presence rate. In this embodiment as well, the mode in the lighting space which is a free address will be described as in FIG. 7. In FIG. 8, the lighting fixture in the gray area is turned off, and the lighting fixture in the white region is turned on.

In FIG. 8, the capacity of each block, that is, the denominator of the presence rate is 6 people, and the number of lighting fixtures in each block is 4. The present embodiment is different from the embodiment of the first embodiment of FIG. 7 in that the lighting control is performed according to the presence rate when the seated person can move beyond the blocks.

In FIG. 8, the number of people seated is 3 in A block, 1 in B block, 2 in C block, and 0 in D block, and 3 + 1 + 2 + 0 = 6 in the entire lighting space, which is one block. With a capacity of only 6 people, seats for all can be secured. In the example of FIG. 7, the seated person moves only within the block, but in this modification, the seated person moves beyond the block. In order to minimize the movement of seated people, it is desirable that all the lighting fixtures in the A block, which has the largest number of seated people, be turned on and all the lighting fixtures in the other blocks are turned off. ..

As a result, when the lighting fixture to be turned on is automatically selected according to the presence rate and the arrangement of the seated people as shown in FIGS. 8A and 8B, the position corresponding to the lighting fixture turned off is set. The person who was seated moves beyond the block to the seat in the A block where the lighting equipment is lit. In this way, when a person seated beyond the block can move, in addition to controlling the number of lighting fixtures lit based on the presence rate in the block, lighting is performed in consideration of the capacity of the entire lighting space and the number of seated people. By controlling the number of lighting fixtures, the power consumption of the lighting fixture can be further reduced.

As an application of this modification, first, as shown in FIG. 7, the number of lights is controlled based on the presence rate in the block, and further, when the number of seated people in the lighting space is reduced, for example, the presence rate in the entire lighting space. When 6/36 = 25% or less, control of the number of lighting fixtures that accompany the movement of people beyond the blocks, taking into consideration the capacity of the entire lighting space and the number of seated people, as shown in FIG. It can be performed.

Further, the block for identifying the person to be seated and the person for which the block to be seated is not determined may be identified and turned on by the room entry management for identifying the person to enter the room.
At this time, the lighting of the lighting device may be controlled so that the person who has not decided the block to be seated is seated in the block where the person to be seated is decided.
Also, if it is better for a person who has a fixed block to be seated not to stay around due to work content, etc., it is different from a person who has a fixed block to be seated. You may control the lighting of the lighting device so that you can gather in the block and sit down.

[Example 3]
The lighting control system of the third embodiment will be described with reference to FIG. FIG. 9 shows the control of the lighting area in the block according to the presence rate according to the third embodiment. The lighting control system of the present embodiment is different from the embodiment of the first embodiment and the second embodiment in that a person can be seated at a distance. If you want to work in a quieter environment, or if you want to increase the distance between people to prevent infectious diseases, as shown in Fig. 9, the person who sits down by widening the space between the lighting fixtures that light up as much as possible. It is possible to take a large interval.

[Example 4]
The lighting control system of the fourth embodiment will be described with reference to FIG. FIG. 10 is an explanatory diagram of image recognition in which the passage 30 is masked. FIG. 10 shows a lighting control system that recognizes the number of seated people by masking the area corresponding to the aisle in order to prevent the number of people moving in the aisle from being mistakenly recognized as the number of seated people during image recognition. Is. In FIG. 10, the gray area is the passage 30, and the area corresponding to the passage 30 is masked when recognizing a person as an image. Therefore, it is possible to prevent the number of people moving in the aisle from being mistakenly recognized as the number of seated people.

[Embodiment 2]
The lighting control system according to the second embodiment of the present invention will be described. The lighting control system of this embodiment saves energy by applying the lighting control using the presence rate according to the annual schedule, date, day, time zone, business plan, event, season, weather, weather forecast, etc. In addition, it is possible to add value such as space utilization and comfort. By setting the planned occupancy rate for each block in advance, performing the planned operation of the lighting equipment according to the set occupancy rate, and modifying the planned occupancy rate according to the actual occupancy rate. In addition to planned energy saving, further energy saving can be realized by the revised planned presence rate, and appropriate lighting control can be realized according to the actual number of seated people.

[Modified Example of Embodiment 2]
A modified example of the second embodiment will be described. In this modification, characteristics are given and managed for each block when performing planned operation. The characteristics of each block are based on big data such as annual schedule, date, day, time zone, business plan, event, season, weather, weather forecast, past performance, operation history of other systems, etc. It may be calculated by a calculation means such as an AI system trained by learning.

In the first embodiment, the lighting control is described so as to encourage the movement of people according to the presence rate of each block. In the present embodiment, priority may be given to each block according to the annual schedule, date, time zone, and the like. Further, the denominator of the presence rate may be changed.
For example, the blocks to be used may be divided according to the season. In the summer, the occupancy rate is 100% first. The adjacent block is given priority to use the distant block first, and in the winter, the occupancy rate is 100% first. You may give priority to use from the block adjacent to the block. By giving this priority, it is possible to suppress the concentration and heat in the summer, and to suppress the concentration and diffusion of heat in the winter, and it is possible to control the fluctuation of the room temperature in the space. ..

In addition, the priority may be changed within the same day. In the case of a company that has a working system with distributed work start times, those who arrive early in the morning should control the lighting so that the presence rate is high from the block away from the doorway in the space. Then, after a predetermined time, the lighting may be controlled without setting a priority. In this way, by increasing the presence rate from the block away from the doorway, it is possible to suppress the movement of the late arrival person around the early arrival person, and it is possible to make it easier to work.
In addition, when it is desired to suppress overtime work, the presence rate of blocks near the doorway may be increased from a predetermined time in the afternoon. In this way, by increasing the presence rate of blocks near the doorway, working people will approach the doorway. Therefore, it is possible to encourage people to return home rather than working without moving to a specific place.

In this way, by controlling the lighting according to the annual schedule and the like together with the lighting control using the presence rate, it is possible to save energy of the lighting equipment and add value to the lighting space.

[Embodiment 3]
The lighting control system according to the third embodiment of the present invention will be described. The lighting control system of the present embodiment can apply the presence rate information to a control other than the lighting control. For example, the control of ventilation is one of the most important in the control of air conditioning, and conventionally, the output of each ventilation fan is controlled by a carbon dioxide sensor. By controlling the ventilation fan according to the presence rate, it is possible to realize more appropriate air conditioning control according to the number of seated people.

Planned power control based on power demand forecast control, so-called demand control, is performed, for example, at a cycle of 30 minutes. It is desirable to control the ventilation fan according to the presence rate at the same timing as this demand control. For example, although not particularly limited, if the presence rate is 90% or more, the ventilation fan output is 100%, and if the presence rate is 80% or more and less than 90%, the ventilation fan output is 90% and the presence rate is 70%. If it is less than 80%, the ventilation fan output can be set to 80%, and similarly, if the presence rate is less than 10%, the ventilation fan output can be set to 10%. By using the presence rate, more detailed ventilation fan output control becomes possible, and thereby, more energy-saving air conditioning control becomes possible.

In the lighting control system of the present embodiment, the presence rate information is not limited to the ventilation fan control, but also various other controls such as temperature or humidity by the air conditioner, air volume control of the air conditioner, automatic blind control, automatic broadcast control, and planning. It can also be applied to power control, power demand forecast control, and the like. For example, in automatic blind control, the amount of natural light can be adjusted in consideration of the presence rate. Also, for example, in automatic broadcasting control, a warning message according to the attendance rate, for example, if the attendance rate is high even after the scheduled leaving time, a message such as "Let's leave the office early." Broadcasting also enables appropriate labor management. Further, when the presence rate is used for the planned power control or the power demand forecast control, the power consumption can be calculated from the presence rate, so that the prediction accuracy of the power consumption can be further improved. ..

Although the lighting control system has been described above in the embodiment of the present invention, the above-described embodiment exemplifies the lighting control system for embodying the technical idea of the present invention, and specifies the present invention to these. It's not a thing. The numerical values used in the explanation are also examples, and other numerical values may be used.
Further, it can be equally applied to those of other embodiments such as those in which modifications are appropriately made to each embodiment and each embodiment, and those in which these are combined.

10 lighting controller, 11 PC, 12 terminal A, 13 terminal B, 14 terminal C, 15 terminal D, 16 image sensor A, 17 image sensor B, 18 LAN, 19 communication lines, 20 lighting equipment, 21 terminals Vessel E, 22 signal line, 25 seated person, 26 moving person, 27 people between blocks, 30 passages.

Claims (12)

Lighting equipment that illuminates the lighting space and
A person detection sensor that detects a person in the lighting space,
A control device that controls the lighting fixture based on the detection signal from the human detection sensor, and
It is a lighting control system equipped with
The control device can divide the lighting space into a plurality of blocks and control the lighting fixture corresponding to each block.
The person detection sensor can detect the number of people existing in each block, and can detect the number of people.
The lighting device is a lighting control system controlled based on the number of people detected for each block by the person detection sensor. The lighting control system according to claim 1, wherein the number of people detected for each block is used as information on the number of people for each hour to control the lighting device. The lighting control system according to claim 1 or 2, wherein the attendance rate is calculated for each block according to the assumed number of people set for each block. The lighting control system according to claim 3, wherein the estimated number of people set for each block can be changed according to a predetermined schedule. The lighting control system according to claim 3 or 4, wherein when the presence rate of the block is equal to or less than a predetermined value, the area for lighting the lighting fixture in the block is narrowed by a predetermined amount. A lighting control system in which the area for lighting the lighting equipment in the block is narrowed by a predetermined amount according to the presence rate of the block. The lighting control system according to any one of claims 3 to 5, wherein the area for lighting the lighting equipment is narrowed by a predetermined amount according to the presence rate or the number of seated seats obtained by collectively requesting the plurality of blocks. The presence rate for each block is used for at least one of air conditioning control, ventilation control, temperature control, humidity control, air volume control, automatic blind control, automatic broadcasting control, planned power control, and power demand forecast control. The lighting control system according to any one of claims 3 to 7. The person detection sensor is used for each block.
(1) If there is a person, be present,
(2) If a person is moving, it must be moving or
(3) The lighting control system according to any one of claims 1 to 8, which can detect at least one of the absence of a person when the person does not exist. The person detection sensor is
Claim that when a person exists across two or more blocks, the person is detected as existing in the block having the largest existing area based on the area ratio in which the person exists in each block. The lighting control system according to any one of 1 to 9. The bright control system according to claim 10, wherein the existing area is an area occupied by the upper body of the person. The lighting control system according to any one of claims 1 to 11, wherein the human detection sensor is an image sensor.

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