JP2019087495A - Illumination control device, illumination control system and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting control device which does not cause discomfort to a user even when it is necessary to suppress power consumption. SOLUTION: A lighting control device 10 sets a target dimming rate according to a user detection unit 12 for acquiring the number of users in the sales floor and the number of users in a plurality of target areas divided in the sales floor 30. It includes a dimming rate determining unit 18 for determining, a power consumption calculating unit 20 for calculating the target power consumption of the lighting fixture 40, and a control unit 22. When the control unit 22 receives a power consumption reduction request from the outside via the communication unit 16, the control unit 22 exceeds the upper limit of the power consumption of the lighting fixture 40 determined according to the reduction request power. The illuminance of the luminaire 40 is controlled by using the value obtained by subtracting the reduction amount corresponding to the difference between the target power consumption and the upper limit value from the target dimming rate of the luminaire 40 as the dimming rate, and the target consumption of the luminaire 40 is controlled. When the electric power is equal to or less than the upper limit value, the dimming rate is set to the target dimming rate and the illuminance of the luminaire 40 is controlled. [Selection diagram] Fig. 1

Description

  The present invention relates to a lighting control device, a lighting control system, and a program.

  In the midsummer daytime, power shortages may cause power companies to issue power saving requests. Responding to a power saving request from a power company is a duty, and it is not permitted to use more power than specified. Therefore, control of the power consumption of the lighting apparatus requires both control at the time of issuance of the power saving request and control at the time of issuance of the power saving request. For example, Patent Document 1 discloses a technology of a lighting control device for controlling the power consumption of a lighting fixture so as not to exceed the power consumption of an arbitrarily determined power consumption or a power saving request which is determined forcibly It is done.

JP-A-11-45782

  The lighting control device disclosed in Patent Document 1 dims the lighting fixture to the minimum illuminance required by the user, and suppresses the amount of power consumption. When the lighting apparatus is dimmed to the necessary minimum illuminance, for example, in the case of a store such as a convenience store (hereinafter referred to as a convenience store), the inside of the store becomes too dark. As a result, the customer who is the user is given an impression of discomfort or discomfort, which leads to a decrease in the number of visitors.

  The present invention solves these problems, and provides a lighting control device, a lighting control system, and a program for controlling a lighting device that does not give the user a sense of discomfort when it is necessary to reduce power consumption. The purpose is to

  In order to achieve the above object, the lighting control device according to the present invention is acquired by the user detection unit for acquiring the number of users in the sales department, and for each of a plurality of target areas obtained by dividing the sales area. A dimming control unit that determines a target dimming ratio according to the number of users, a power consumption calculator that calculates target power consumption of lighting fixtures installed in a plurality of target areas, and power consumption from outside When the reduction request for power consumption is received by the communication unit that receives the reduction request and the reduction request power and the reduction request for power consumption is received by the communication unit, the target power consumption is the upper limit value of the power consumption of the lighting fixture determined according to the reduction request power. The value obtained by subtracting the reduction amount corresponding to the difference between the target power consumption and the upper limit value from the target dimming rate of the lighting device and using the subtraction value as the Control the illumination of the lighting When the target power consumption of the device is equal to or less than the upper limit value, and a control unit for controlling the illumination settings to luminaire dimming ratio of the lighting fixture to a target dimming ratio.

  According to the lighting control device, the lighting control system, and the program in the present invention, when it is necessary to reduce power consumption, the dimming rate of the lighting fixture is determined based on the number of users in the sales floor, and By controlling the illuminance, it is possible to realize control of the luminaire that does not give the user a sense of discomfort while suppressing power consumption of the luminaire.

Block diagram of a lighting control system according to Embodiment 1 of the present invention The figure which shows the example of a hardware constitutions of the illumination control apparatus which concerns on Embodiment 1 of this invention. The schematic diagram which shows an example of arrangement | positioning of the lighting fixtures in the counter according to Embodiment 1 of this invention A diagram showing a list of target dimming rates of the lighting fixtures according to Embodiment 1 of the present invention The figure which shows case 1 of the change aspect of the light control rate which concerns on Embodiment 1 of this invention. The figure which shows case 2 of the change aspect of the light control rate which concerns on Embodiment 1 of this invention. A flowchart showing the operation of the light control ratio control process according to the first embodiment of the present invention Block diagram of a lighting control system according to Embodiment 2 of the present invention

  Hereinafter, a lighting control device, a lighting control system, and a program according to an embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to an identical or equivalent part.

Embodiment 1
A lighting control system 100 according to Embodiment 1 of the present invention will be described using FIGS. 1 to 6.
The lighting control system 100 controls the illuminance of the lighting device 40 according to the target dimming rate determined based on the number of users present in the sales department 30, thereby determining the power consumption of the lighting device 40. Is a system that controls so as not to exceed.
In the first embodiment, a room of a facility in which the lighting apparatus 40 is disposed will be described below as a sales floor of a convenience store.
As illustrated in FIG. 1, the lighting control system 100 includes n human sensors 50_1 and 50 — n disposed in the sales floor 30 of a convenience store, and the lighting control device 10 that controls the power consumption of the lighting device 40.
The human sensor 50_1, 50 — n is a sensor that detects the number of people present in the counter 30. A plurality of human sensors 50 _ 1, 50 _ n are attached at arbitrary positions in the counter 30. Note that n is an arbitrary numerical value of 2 or more, and the human sensors 50_1 and 50 — n are collectively referred to as a human sensor 50.
The lighting apparatus 40 is disposed on the ceiling surface 31 of the sales department 30. The luminaire 40 has a window-side luminaire 41 and an internal luminaire 42, which will be described in detail later.

  The lighting control device 10 is a light control unit that determines the light control rate of the user detection unit 12 connected to the human sensor 50 disposed in the sales department 30, the lighting information storage unit 14, the communication unit 16, and the lighting fixture 40. A rate determination unit 18, a power consumption calculation unit 20 that calculates the power consumption of the lighting apparatus 40, and a control unit 22 are provided.

The user detection unit 12 acquires the number of people present in the counter 30 detected by the human sensor 50.
The illumination information storage unit 14 stores installation position information indicating the installation position of the lighting fixture 40 in the sales department 30, various databases to be described later, and a program for operating the lighting control apparatus 10. The installation position information is information summarizing the coordinates in the sales floor 30 and the positional relationship between the window-side lighting fixture 41 and the internal lighting fixture 42 corresponding to the coordinates.

  The communication unit 16 is connected to an external network 25 such as the Internet. The communication unit 16 receives a reduction request for power consumption and a reduction request power Wc for power consumption from the power company via the network 25.

  The dimming rate determination unit 18 determines the dimming rates of the window-side lighting fixture 41 and the internal lighting fixture 42 so that the illuminance of the shop floor 30 becomes the target illuminance. In the following description, the light control rate determined by the light control rate determining unit 18 will be referred to as a “target light control rate”.

  Further, since there is a correlation between the light control rate of the lighting apparatus 40 and the power consumption, the correlation is obtained in advance, a correlation database is created, and the created correlation database is stored in the illumination information storage unit 14 Store it.

  The power consumption calculation unit 20 is configured from the correlation database stored in the illumination information storage unit 14 based on the dimming ratio currently set for each of the window-side lighting fixture 41 and the internal lighting fixture 42, and the window-side lighting fixture 41 and the internal lighting fixture 42 Calculate the power consumption of each. In the power consumption calculation unit 20, the power consumption calculation unit 20 determines the power consumption of the current lighting equipment 41 and the internal lighting equipment 42 from the sum of all the power consumption of the lighting equipment 41 and the internal lighting equipment 42. Determine a certain current power consumption Wa.

  Further, the power consumption calculation unit 20 is based on the target dimming rates of the window-side lighting fixture 41 and the internal lighting fixture 42 determined by the dimming ratio determination unit 18 from the correlation database stored in the lighting information storage unit 14. Then, the power consumption of the window-side lighting fixture 41 and the internal lighting fixture 42 is obtained. The power consumption calculation unit 20 obtains the target power consumption Wb from the sum of all the power consumption of the window-side lighting fixture 41 and the internal lighting fixture 42. The target power consumption Wb is the sum of the powers expected to be consumed when the dimming rate of all the window-side lighting fixtures 41 and the internal lighting fixtures 42 is changed to the target lighting control rate, that is, according to the target illuminance. Power consumption. The power consumption of each of the window-side lighting fixture 41 and the internal lighting fixture 42 may be measured by a power meter (not shown). In this case, the current consumption power Wa may be measured by a power meter, and the dimming ratio may be actually changed to the target dimming ratio to measure the target power consumption Wb.

When the control unit 22 receives a request for reduction of power consumption from the power company, the power consumption by the window-side lighting fixture 41 and the internal lighting fixture 42 is a predetermined reduction request at the window-side lighting fixture 41 and the internal lighting fixture 42. The light control rate of each of the window-side lighting fixture 41 and the internal lighting fixture 42 is controlled so as not to exceed the upper limit value of the power consumption by the above.
For example, when the target power consumption Wb exceeds the upper limit value, the control unit 22 obtains the dimming rate corresponding to the difference between the target power consumption Wb and the upper limit value, that is, the total reduction amount of the dimming rate. Is divided by the window-side lighting fixture 41 and the internal lighting fixture 42, and the divided reduction amounts are subtracted from the target dimming rates of the window-side lighting fixture 41 and the internal lighting fixture 42, respectively. The control unit 22 controls the illuminance of each of the window-side luminaire 41 and the internal luminaire 42 using the value obtained by subtraction as the dimming rate of each of the window-side luminaire 41 and the internal luminaire 42.

  Also, for example, the control unit 22 divides the total reduction amount of the light control rate into the window-side lighting fixture 41 and the internal lighting fixture 42 respectively. The divided reduction amount is subtracted from the target dimming rate of each of the window-side lighting fixture 41 and the internal lighting fixture 42, and the obtained value is used as the lighting control rate of the window-side lighting fixture 41 and the internal lighting fixture 42. As described above, the total reduction amount of the light control rate is divided by the window luminaire 41 and the internal luminaire 42 to lower the light control rate of the window luminaire 41 and the internal luminaire 42 respectively. That is, the illuminance of the window-side lighting fixture 41 and the internal lighting fixture 42 is lowered.

In FIG. 2, an example of the hardware constitutions of the illumination control apparatus 10 is shown.
The lighting control apparatus 10 includes a processor 71, a memory 72 connected to the processor 71 via an internal bus 75, and an interface 73. Each function of the light control rate determining unit 18, the power consumption calculating unit 20, and the control unit 22 in the illumination control device 10 is realized by the processor 71. The processor 71 is a CPU (Central Processing Unit) that executes a program stored in the memory 72.

  The illumination information storage unit 14 is realized by the memory 72. The memory 72 stores a program executed by the processor 71, installation position information of the lighting apparatus 40, and dimming control information. The memory 72 is, for example, a nonvolatile or volatile semiconductor memory such as a random access memory (RAM), a read only memory (ROM), a flash memory, an erasable programmable read only memory (EPROM), or an electrically erasable programmable read only memory (EEPROM). A storage element and a storage medium such as a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD (Digital versatile disc) are applicable. Although FIG. 2 shows an example in which one processor 71 and one memory 72 are configured, a plurality of processors and a plurality of memories may cooperate to execute the above-described function.

  The interface 73 is an interface that transmits and receives signals to and from the outside of the lighting control apparatus 10. The communication unit 16, the user detection unit 12, and the control unit 22 transmit and receive signals to and from the outside of the lighting control apparatus 10 via the interface 73.

The dimming ratio determination unit 18, the power consumption calculation unit 20, and the control unit 22 are realized by software, firmware, or a combination of software and firmware. The software and firmware are described as a program and stored in the memory 72. The processor 71 reads out and executes the program stored in the memory 72 to realize the functions of the dimming ratio determination unit 18, the power consumption calculation unit 20, and the control unit 22.
Also, these programs cause the computer to execute the procedures and methods of the dimming ratio determination unit 18, the power consumption calculation unit 20, and the control unit 22, respectively.

  In addition, the above-described hardware configuration and flowchart are an example, and arbitrary changes and modifications are possible.

An example of arrangement | positioning of the lighting fixture 40 in the shop floor 30 of the shop of a convenience store is shown in FIG.
A window 33 is disposed in the sales department 30. The sales department 30 is divided into a plurality of target areas. The plurality of target areas are divided into a window area 32 at the window 33, a first inner area 34_1 other than the window area 32, and a j-th inner area 34_j. Here, j is an arbitrary numerical value of 2 or more, and the first inner area 34_1 and the j-th inner area 34_j are collectively referred to as an inner area 34.

  On the ceiling surface 31 of the in-window area 32, m window-interior lighting fixtures 41_1, 41_2, and 41 — m are disposed. The k first internal lighting devices 42_1, 42_2, 42 — k are disposed on the ceiling surface 31 of the first internal area 34_1. The i-th p-th internal lighting device 42_k + 1, 42_k + 2, 42_k + i is disposed on the ceiling surface 31 of the j-th area 34_j. Here, m, k, j, i, p are arbitrary numerical values of 2 or more. The window-side lighting fixtures 41_1, 41_2, and 41 — m are collectively referred to as a window-side lighting fixture 41. The first internal lighting devices 42_1, 42_2, 42_k and the ith internal lighting devices 42_k + 1, 42_k + 2, 42_k + i are collectively referred to as an internal lighting device 42.

  The lighting control device 10 can control the window-side lighting fixture 41 and the internal lighting fixture 42 separately. When the user who is the customer looks at the sales department 30 from the outside, if the sales department 30 is dark, he / she feels that it is difficult to enter. Therefore, it has been confirmed in various social experiments that the number of visitors to the counter 30 is significantly reduced compared to the case where the user feels bright in the counter 30 viewed from the outside. Therefore, in the actual sales floor 30 of the convenience store, the lighting equipment 41 at the window and the internal lighting equipment 42 are always close to all lights, creating an atmosphere in which the user can easily enter the sales floor 30.

  However, when the number of users present in the counter 30 is zero, it is not necessary to keep the window-side lighting fixture 41 and the internal lighting fixture 42 close to all lights. In particular, when there is a shortage of power supply due to a reduction request from a power company, it is necessary to reduce power consumption based on the reduction request. Therefore, the lighting control device 10 dims the lighting device 41 and the internal lighting device 42 according to the number of users detected by the human sensor 50 disposed in the sales floor 30 and the presence or absence of a reduction request from the power company. Control.

  The preset total reduction amount of the light control rate of the lighting fixture 40 is set as a reduction amount ΔR. A specific method of changing the light control rate of the window-side lighting fixture 41 and the internal lighting fixture 42 based on the reduction amount ΔR will be described below.

First, with reference to FIG. 4, the target dimming rates of the window-side lighting fixture 41 and the internal lighting fixture 42 will be described. FIG. 4A is a table in which the target dimming ratio in case 1 is set, and FIG. 4B is a table in which the target dimming ratio in case 1 is set. 4A and 4B show the target area of the sales department 30 in rows, and show the target dimming rate and the reduction amount at the time of a reduction request from the power company in columns. The target dimming rate is a dimming rate determined based on the target illuminance for controlling the window-side lighting fixture 41 and the internal lighting fixture 42. The target dimming rate indicates the case where one or more users are present in the counter 30. Moreover, the reduction amount divided from the target dimming rate is set as the reduction amount requested by the power company.
The method of changing the light control rate of the window area 32 and the inner area 34 which is the target area of the sales floor 30 using the target light control rate shown in FIG. 4 will be described with reference to FIGS. 5 and 6 below. Do.

First, the method of changing the light control rate according to Case 1 will be described with reference to FIG. In (a) to (c) of FIG. 5, the horizontal axis indicates the target area in the counter 30, and the vertical axis indicates the dimming rate of the lighting fixture 40 in the target area.
FIG. 5A shows the light control rate when one or more users are present in the counter 30. In this case, the target dimming rates of both the window area 32 and the inner area 34 are 100%. Therefore, the window side area 32 and the inner area 34 are uniformly lighted uniformly.
Next, FIG. 5B shows the light control rate when no user is present in the counter 30. In this case, since no user is present at the counter 30, the dimming rate of the internal area 34 is lowered to suppress the power consumption of the internal lighting device 42. Therefore, the target illuminance is set such that the lighting equipment 41 at the window is high and the internal lighting equipment 42 is lower than the lighting equipment 41 at the window. That is, the target dimming rate is also high at the window-side lighting fixture 41 and lower in the internal lighting fixture 42 than the window-side lighting fixture 41. Here, for example, the target dimming rate of the area 32 by the window is 100%, and the target dimming rate of the inner area 34 is 80%.
FIG. 5C shows a dimming ratio in which the target dimming ratio is further lowered based on the reduction amount ΔR when a reduction request of the power consumption is received from the power company. Here, an example in the case where no user is present in the counter 30 is shown.

In FIG. 5C, the broken line indicates the target dimming rate, and the solid line indicates the dimming rate reduced in value from the target dimming rate. In Case 1, the control unit 22 divides the reduction amount ΔR by the number of the window-side lighting fixtures 41 and the internal lighting fixtures 42. The value obtained by the division is subtracted from the target dimming rate of the window-side lighting fixture 41 and the internal lighting fixture 42. The value obtained by subtraction is used as the dimming rate of the window-side lighting fixture 41 and the internal lighting fixture 42. That is, the target dimming rates of the in-window lighting fixture 41 and the internal lighting fixture 42 are uniformly reduced.
For example, when the number of the in-window lighting fixture 41 and the number of the internal lighting fixtures 42 is ten, the reduction amount ΔR is divided by 10, and the value obtained by the division (ΔR / 10) Subtract from the target dimming rate of Since the dimming ratio of the in-window lighting fixture 41 and the internal lighting fixture 42 uniformly decreases, it is possible to reduce the power consumption of the in-window lighting fixture 41 and the internal lighting fixture 42 while suppressing the influence on comfort. Become. That is, it is possible to reduce the amount of power consumption without significantly reducing the illuminance of the lighting equipment 41 at the window and a part of the internal lighting equipment 42 and impairing the comfort.

  The target illuminance of the lighting equipment 41 at the window is set high in order to avoid the deterioration of the ability to attract customers even when it is necessary to reduce the power consumption. On the other hand, the target illuminance of the internal lighting fixture 42 is set lower than the target illuminance of the lighting fixture 41 near the window, in a range not affecting the work of the facility staff. For this reason, when further reduction in power consumption is required in Case 1, it is conceivable that the illuminance of the internal lighting fixture 42 is too low, which causes troubles in the work of the facility staff.

Therefore, in Case 2, by reducing the amount of reduction of the luminaire 41 at the window with high illuminance, excessive irradiance drop of the internal luminaire 42 is prevented. A method of changing the light control rate according to Case 2 will be described with reference to FIG.
In FIGS. 6A to 6C, the horizontal axis indicates the position in the sales floor 30, and the vertical axis indicates the dimming rate of the lighting fixture 40 at each position.
FIG. 6A shows the light control rate when one or more users are present at the counter 30. In this case, the target dimming rates of both the window area 32 and the inner area 34 are 100%. Therefore, the window side area 32 and the inner area 34 are uniformly lighted uniformly.
Next, FIG. 6 (b) shows the light control rate when no user is present in the counter 30. FIG. In this case, since no user is present at the counter 30, the dimming rate of the internal area 34 is lowered to suppress the power consumption of the internal lighting device 42. Here, the target dimming rate of the area 32 by the window is 100%, and the target dimming rate of the inner area 34 is 80%.

FIG. 6 (c) shows a dimming rate in which the target dimming rate is further lowered from the target dimming rate when the reduction in power consumption is received from the power company. Here, an example in the case where no user is present in the counter 30 is shown.
Here, any of the window-side luminaires 41 or the internal luminaires 42 is referred to as an optional luminaire 43.
In Case 2, the reduction amount of the dimming rate of an arbitrary luminaire 43 is obtained according to the following equation (1).
Amount of reduction in dimming rate of any lighting fixture 43 =
Reduction amount ΔR × (target dimming rate of any lighting device 43)
/ (Total of the target dimming rate of the lighting equipment 41 at the window and the internal lighting equipment 42) (1)
That is, the reduction amount of the dimming rate of the arbitrary lighting device 43 is determined such that the reduction amount of the dimming rate increases as the target dimming rate of the arbitrary lighting device 43 increases. Furthermore, in other words, as the ratio of the target dimming rate to the sum of the target dimming rates of all of the window-side lighting fixture 41 and the internal lighting fixture 42 increases, the reduction amount of the lighting control rate increases. Then, the control unit 22 subtracts the reduction amount obtained by the equation (1) from the target dimming rate of each of the window luminaire 41 and the internal luminaire 42, and subtracts the value obtained by subtracting the window luminaire 41. Used as the dimming rate of each of the internal lighting devices 42.

FIG. 6C shows the result of subtracting the reduction amount obtained by the above equation (1) from the target dimming rate of each of the window-side lighting fixture 41 and the internal lighting fixture 42. The broken line indicates the target dimming rate, and the solid line indicates the dimming rate obtained by subtracting the reduction amount obtained by equation (1) from the target dimming rate.
Since the reduction amount of the light control rate decreases as the target light control rate decreases, the decrease rate of the light control rate of the internal lighting fixture 42 decreases. Here, the reduction amount of the inner area 34 is ΔR + β as shown in FIG. 4 (b).
Moreover, the reduction amount of the light control rate of the lighting equipment 41 by the side of the window where the target light control rate is high will increase by that much. Here, the reduction amount of the area 32 by the window is ΔR + α, as shown in FIG. 4 (b).
Therefore, the excessive fall of the illumination intensity of the internal lighting fixture 42 can be prevented.

  In addition, the dimming ratio of each of the in-window illumination fixture 41 and the internal illumination fixture 42 may be lowered by a method other than the above-described cases 1 and 2. For example, even if the reduction amount of the light control rate of any luminaire 43 with a large power consumption is increased, the reduction amount of the light control rate of each of the window luminaire 41 and the internal light luminaire 42 is determined by weighting Good. In the case 1, the reduction amount ΔR, which is the total reduction amount, is divided by the number of all the lighting devices 41 and the internal lighting devices 42 at the window, and the value obtained by the division is weighted according to the power consumption. The reduction amount of the light control rate for each of the lighting fixture 41 and the internal lighting fixture 42 is obtained. The calculated reduction amount is subtracted from the target dimming rate of each of the window-side lighting fixture 41 and the internal lighting fixture 42. As a result, the dimming rates of the window-side lighting fixtures 41 and the internal lighting fixtures 42 can be reduced more evenly than when the target dimming rates are uniformly reduced, and the influence on comfort can be further suppressed. Become.

  Further, the difference between the current power consumption Wa and the target power consumption Wb is obtained, and if the difference is smaller than the reduction request power Wc, the reduction amount of the power consumption is insufficient, which corresponds to the shortage. The reduction amount ΔR may be determined. If it demonstrates with a specific numerical example, the present power consumption Wa shall be 300 kw, the target power consumption Wb shall be 250 kw, and 50 kw which is the difference is calculated | required. Assuming that the reduction request power Wc is 100 kw, the difference is smaller than the reduction request power Wc, so the reduction amount of the power consumption is insufficient. Therefore, a reduction amount ΔR corresponding to the power consumption 100 kw−50 kw = 50 kw for the shortage is obtained, and the target light control rate of each of the window luminaire 41 and the internal luminaire 42 is lowered based on the reduction amount ΔR. Thus, the reduction amount ΔR can be obtained, and the same effect as in the case 1 described above can be obtained.

The operation of the illumination control apparatus 10 for controlling the dimming ratio of the window-side illumination fixture 41 and the internal illumination fixture 42 by the method of Case 1 described above will be described with reference to the flowchart of the dimming ratio control process shown in FIG. Do.
The light control rate control process is stored in the illumination information storage unit 14 as a light control rate control program. The illumination control device 10 reads the dimming control program from the illumination information storage unit 14 when it is activated. The dimming rate control program read out is executed by the control unit 22 while the illumination control device 10 is activated.
In addition, the control part 22 produces the target light control rate database which set the target town efficiency for every object area in the counter 30 beforehand. For example, as shown in FIGS. 4 (a) and 4 (b), the target dimming ratio database indicates, for each target area of the department 30, whether or not the number of users present in the department 30 is one or more. It is a database in which the dimming rate and the reduction amount at the time of reduction request from the power company are set. The target dimming rate database is stored in the illumination information storage unit 14.

  Next, the user detection unit 12 acquires the number of users present in the counter 30 from the human sensor 50. The number of users is the number excluding the number of store clerks. (Step S101). If there are one or more users present in the sales department 30 (step S102; YES), the control unit 22 sets the entire sales department 30 as a uniform area (step S103). If the user present in the sales department 30 is zero (step S102; No), the control unit 22 divides the sales department 30 into the window area 32 and the internal area 34 (step S104).

  The control unit 22 acquires the target dimming rates of the window area 32 and the inner area 34 from the target dimming rate database (step S105).

  The power consumption calculation unit 20 uses the lighting equipment 41 and the internal lighting equipment 42 based on the target dimming rate of the area 32 and the internal area 34 from the correlation database stored in the lighting information storage unit 14. A target power consumption Wb, which is the sum of all the power consumption, is obtained. In addition, the power consumption calculation unit 20 uses the correlation database to determine the current consumption of the window-side lighting fixture 41 and the internal lighting fixture 42 based on the dimming ratio currently set in the window-side lighting fixture 41 and the internal lighting fixture 42. The current power consumption Wa, which is the sum of the above, is determined (step S106). For example, the current power consumption Wa is 300 kw, and the target power consumption Wb is 250 kw.

If the lighting control apparatus 10 receives the reduction request for power consumption and the reduction request power Wc for power consumption transmitted from the power company via the communication unit 16 (step S107; YES), the control unit 22 A difference Wx between the current power consumption Wa and the power consumption reduction request power Wc is obtained (step S108). Here, specific numerical examples will be described. The reduction request power Wc of the amount of power consumption transmitted from the power company is assumed to be 100 kw. As described above in step S106, the current power consumption Wa is 300 kw, and the target power consumption Wb is 250 kw. The difference between the current power consumption Wa and the reduction request power Wc is as follows.
Difference Wx = current power consumption Wa (300 kw)-reduction request power Wc (100 kw)
= 200 kw
The difference Wx corresponds to the upper limit value of the power that can be consumed by all of the window-side lighting fixtures 41 and the internal lighting fixtures 42 installed in the sales floor 30. That is, it means that up to 200 kw of power can be consumed by the window-side luminaire 41 and the internal luminaire 42 all. In the following description, the difference Wx is referred to as the upper limit value Wx. By determining the amount of power that can be consumed, it is possible to prevent the lighting fixture from being dimmed more than necessary.
Further, if the lighting control apparatus 10 has not received the reduction request for power consumption and the reduction request power Wc for power consumption transmitted from the power company via the communication unit 16 (step S107; NO), the control unit 22 The light control rate of the lighting apparatus 40 is changed to the target light control rate (step S111). Thereby, the illuminance of the lighting fixture 40 is changed to the target illuminance.

  The control unit 22 compares the target power consumption Wb with the upper limit value Wx. If the target power consumption Wb exceeds the upper limit value Wx (step S109; YES), a difference ΔW between the target power consumption Wb and the upper limit value Wx is obtained (step S110). Explaining this with a specific numerical example, when the target power consumption Wb is 250 kw, if the current power consumption Wa is 300 kw, the difference ΔW = target power consumption Wb (250 kw) −upper limit value Wx (200 kw) = 50 kw. The difference ΔW is power consumption that can not be reduced with the target power consumption Wb with respect to the reduction request power Wc. That is, the reduction amount of the power consumption of the difference ΔW = 50 kwh is insufficient.

  The control unit 22 obtains a reduction amount ΔR corresponding to the difference ΔW based on the correlation between the light adjustment rate and the power consumption in order to reduce the difference ΔW that is the power consumption for the shortage (step S112). The reduction amount ΔR corresponds to the total reduction amount of the dimming rate of all of the window-side lighting fixture 41 and the internal lighting fixture 42. Then, the control unit 22 changes the light control rate of each of the window-side lighting fixture 41 and the internal lighting fixture 42 based on the reduction amount ΔR (step S113). For example, the control unit 22 divides the reduction amount ΔR by the window-side lighting fixture 41 and the internal lighting fixture 42 and subtracts the divided reduction amount from the target dimming rates of the window-side lighting fixture 41 and the internal lighting fixture 42. A value obtained by subtraction is used as a dimming ratio of the window-side lighting fixture 41 and the internal lighting fixture 42 to control the illuminance of the window-side lighting fixture 41 and the internal lighting fixture 42. Thereby, the illuminance of the window-side lighting fixture 41 and the internal lighting fixture 42 is lowered according to the difference ΔW. As an example, the control unit 22 divides the reduction amount ΔR between the window-side lighting fixture 41 and the internal lighting fixture 42, and reduces the light control rates of the window-side lighting fixture 41 and the internal lighting fixture 42 respectively.

  The control unit 22 compares the target power consumption Wb with the upper limit value Wx, and when the target power consumption Wb is equal to or less than the upper limit value Wx (step S109; No), the target power consumption Wb is compared with the reduction request power Wc. Since the reduction amount of the power consumption is sufficient, the control unit 22 changes the light control rate of the window-side lighting fixture 41 and the internal lighting fixture 42 to the target light control rate (step S111). Thereby, the illumination intensity of the window-side illumination fixture 41 and the internal illumination fixture 42 is changed to the target illumination intensity.

  As described above, when the power supply shortage occurs, the reduction amount ΔR corresponding to the difference between the target power consumption Wb and the upper limit value Wx of the power consumption, that is, the light control rate of all the window lighting fixture 41 and the internal lighting fixture 42 The total amount of reduction is divided by the window-side lighting fixture 41 and the internal lighting fixture 42, and the divided reduction amount is subtracted from the target dimming rate of the window-side lighting fixture 41 and the internal lighting fixture 42 and subtracted. By using the rate as the dimming rate of each of the window-side lighting fixture 41 and the internal lighting fixture 42, the power consumption of the window-side lighting fixture 41 and the internal lighting fixture 42 is reduced corresponding to the power supply shortage. It becomes possible to suppress the influence on the comfort accompanying a change. That is, since the influence of the power supply shortage is divided between the window-side lighting fixture 41 and the internal lighting fixture 42, the influence on the comfort can be suppressed. In particular, since the power supply shortage may occur suddenly, it is difficult to predict in advance the reduction request power Wc and the reduction amount of the dimming ratio. However, on the other hand, it is necessary to suppress the influence on the comfort accompanying the change of the light control rate. In the present invention, by dividing the light control rate corresponding to the power consumption for the shortage by the lighting device 40 and lowering the light control rate, even if the power supply is suddenly insufficient, the power supply shortage may occur. It becomes possible to suppress the influence on the comfort accompanying the change of the light control rate, corresponding to it.

  As described above, according to the first embodiment, even in the case of controlling the window-side lighting device 41 and the internal lighting device 42 according to a request for reduction of power consumption, it is possible to prevent the lighting device 40 from being dimmed more than necessary it can. Moreover, it can respond also when changing control of each object area according to the presence or absence of the user who exists in the shop floor 30. FIG. Therefore, it is possible to realize control of the luminaire 40 that does not give inconvenience and discomfort to the user while reducing the power consumption of the entire sales department 30.

Second Embodiment
In the illumination control device 10 according to the second embodiment, the user detection unit 12 acquires the number of people in the sales department 30 based on the video camera 60 provided in the sales department 30 and the data output from the attendance management device 62. Do.

  It is normal for the store clerk who resides in the sales department 30 to do some work. The human sensor 50 of the lighting control device 10 according to the first embodiment merely detects the number of people present in the sales department 30, and therefore can not distinguish between a store clerk and a customer who is a user. For the convenience store, if the illumination intensity of the lighting equipment 40 can distinguish between a customer who does not want to give a sense of discomfort or discomfort, and a store clerk who can tolerate a certain degree of discomfort if there is no problem with the work, lighting is more desirable. The device 40 can be controlled.

  The lighting control device 10 according to the second embodiment of the present invention has the ceiling of the sales department 30 when the number of users present in the sales department 30 is zero regardless of whether or not the salesperson is present at the sales department. The illuminance of the luminaire 41 is maintained at the window disposed on the surface 31, and the internal luminaire 42 is controlled to a minimum illuminance that does not hinder the store clerk's work. When one or more users are present in the counter 30, the same as in the first embodiment.

FIG. 8 shows a block diagram of the lighting control device 10 and the lighting control system 100A.
In the sales department 30, a video camera 60 and an attendance management device 62 are arranged. The video camera 60 is a camera for capturing video. The attendance management device 62 is a device that manages the attendance of the store clerk. It is arranged in a place where the convenience store users do not see, such as the backyard 30 of the sales floor, a waiting room for sales clerks, and a management office. The configuration of the illumination control device 10 is the same as that of the first embodiment.
The video camera 60, the attendance management device 62, and the lighting control device 10 constitute a lighting control system 100A.

  The user detection unit 12 of the illumination control device 10 acquires a video image captured by the video camera 60. The user detection unit 12 performs image recognition of the acquired video image, and acquires the total number of people present in the counter 30. Next, the user detection unit 12 acquires the number of clerks who exist in the counter 30 from the attendance management device 62. The control unit 22 subtracts the number of clerks from the number of people present in the counter 30 acquired by the user detection unit 12 and calculates the number of users of the convenience store.

  The lighting control apparatus 10 according to the second embodiment determines whether or not there is a user in the counter 30 according to the calculated number of users in step S102 of the light control ratio control process shown in FIG.

  From the above, in the second embodiment, the number of users can be reliably acquired by discriminating between the users present in the sales department 30 and the store clerk using the video camera 60 and the attendance management device 62. it can.

(Modification 1)
In the first and second embodiments of the present invention, the inside of department 30 is divided into two areas, but it may be further subdivided if necessary. Further, in the second embodiment of the present invention, since the number of users present in the counter 30 is held as information, the lighting fixtures can be controlled according to the number of people. For example, it can also be used for the purpose of raising the illuminance of a specific place to attract the user's eyes and guiding the user to the place when the number of people is increased.

(Modification 2)
Although in the first and second embodiments of the present invention, the sales department 30 is the store department of a convenience store facility, the sales department 30 may be part of a virtual power plant (VPP). In the case of making it part of the VPP, it may be required to receive the power consumption upper limit value of the entire facility from the remote server controlling the VPP for each time zone and to operate accordingly. In this case, unlike in rare cases such as a power saving request from a power company, which is generated infrequently, it is always necessary to control every predetermined time. Of course, manual response is not possible, and the introduction of an automatic control system is essential. The first and second embodiments of the present invention can cope with this without any problem.

(Modification 3)
In the first and second embodiments of the invention, the processor 71 and the memory 72 for realizing the functions of the light control rate determination unit 18, the power consumption calculation unit 20, and the control unit 22 in the illumination control device 10 do not depend on a dedicated system. , And can be realized using a conventional computer system. For example, a program for realizing each of the functions described above is distributed by being stored in a recording medium such as a computer-readable compact disc read only memory (CD-ROM) or a digital versatile disc read only memory (DVD-ROM). By installing this program on a computer, a computer capable of realizing the functions described above may be configured. When each function is realized by sharing an OS (Operating system) with an application, or by cooperation between an OS and an application, only the application may be stored in the recording medium.

  Furthermore, it is also possible to superimpose each program on a carrier wave and distribute it via the network 25. For example, a program may be posted on a bulletin board BBS (Bulletin broad system) on the network 25, and the program may be distributed via the network 25. Then, the above-described processing may be executed by activating these programs and executing them in the same manner as other application programs under the control of the OS.

(Modification 4)
In the first and second embodiments of the present invention, the lighting control system 100, 100A does not include the lighting fixture 40. However, the present invention is not limited to this, and the lighting control system 100, 100A may include the lighting fixture 40. good.
In this case, the lighting control system 100 controls the power consumption of the lighting fixture 40 disposed on the ceiling surface 31 of the sales department 30 of the convenience store, the human detection sensor 50 disposed in the sales department 30, and the lighting fixture 40. And 10.

  In addition, the lighting control system 100A controls the power consumption of the lighting fixture 40 disposed on the ceiling surface 31 of the sales department 30 of the convenience store, the video camera 60 and the attendance management device 62 disposed in the sales department 30, and the lighting fixture 40. And a lighting control device 10.

(Modification 5)
In the second embodiment, the user and the facility staff are distinguished by using the video camera 60 and the attendance management device 62, but the means for distinguishing between the user and the facility staff is not limited. For example, instead of the attendance management device 62, the facility staff is required to wear an identification device such as a name tag or a uniform in which an RFID (Radio frequency identification) tag is embedded. The user detection unit 12 of the lighting control device 10 can know the number of facility staff by counting the identification devices through communication.

  Also, for example, if there is a doorway used only by the user in the facility, a human sensor 50 may be installed that can sense not only the presence or absence of a person in the vicinity but also the traveling direction. Since the user who enters and the user who exits can be separately counted by the human sensor 50 that can sense the traveling direction, it is possible to calculate the number of users present only from the difference between the two. In this case, counting of facility staff can be omitted.

  Also, if the sales department 30 is a sales department of a convenience store, the user is unlikely to stay in the store for a long time. This can also be used to know the presence or absence of a customer. A human sensor 50 is installed near the entrance. The human sensor 50 does not have to be able to sense the traveling direction. If there is no response from the human sensor 50 for a long time after the reaction of the human sensor 50, i.e., someone passes through the entrance, the customer in the store determines that it is zero. It is not effective when coming in and out with a certain frequency or more, but it is considered practical if it is limited at night. With this method, additional equipment and costs can be minimized.

  The technical scope of the present invention is not limited by the above-described embodiment and modification. The present invention can be freely applied, modified or improved within the technical idea described in the claims.

  DESCRIPTION OF SYMBOLS 10 light control apparatus, 12 user detection parts, 14 lighting information storage parts, 16 communication parts, 18 light control rate determination parts, 20 power consumption calculation parts, 22 control parts, 25 networks, 30 sales areas, 31 ceiling surfaces, 32 windows Area, 33 windows, 34 interior areas, 40 lighting fixtures, 41 window lighting fixtures, 42 internal lighting fixtures 50 human sensor, 60 video cameras, 62 attendance management devices, 71 processors, 72 memories, 73 interfaces, 75 internal buses, 100 , 100A lighting control system.

Claims (9)

A user detection unit for acquiring the number of users in the sales department;
A light control rate determination unit configured to determine a target light control rate according to the number of users acquired by the user detection unit in each of a plurality of target areas obtained by dividing the inside of the counter;
A power consumption calculation unit that calculates target power consumption of the lighting fixtures installed in the plurality of target areas;
A communication unit that receives an external power reduction request and a reduction request power from the outside;
When the communication unit receives the reduction request for power consumption, the target consumption power exceeds the upper limit value of the power consumption of the lighting fixture determined in accordance with the reduction request power. A reduction amount corresponding to the difference between the electric power and the upper limit value is subtracted from the target dimming rate of the lighting device, and a value obtained by subtracting the reduced amount is used as the dimming rate of the lighting device. Control to control the illuminance of the lighting device by controlling the illuminance, and setting the dimming rate of the lighting device to the target dimming rate when the target power consumption of the lighting device is less than or equal to the upper limit value Department,
Lighting control device comprising:   When the number of users of the user acquired by the user detection unit is zero, the light control rate determination unit determines the target light control of the window-mounted illumination fixture installed in the window-bounded area among the plurality of target areas Rate is determined to be the first dimming rate, the target dimming rate of the internal lighting fixture installed in the inner area other than the window area among the plurality of target areas is determined to be the second dimming rate, and the user When the number of users of the user acquired by the detection unit is not zero, the target dimming rate of the lighting fixtures installed in the plurality of target areas is determined to be a third dimming rate. Lighting control device. The user detection unit acquires the number of users according to the number of customers using the counter and the number of clerks other than the customers.
When the control unit receives a request for reduction of power consumption from the outside through the communication unit, the control unit may determine that the number of customers acquired by the user detection unit is zero. When the dimming rate is set to the fourth dimming rate to control the illuminance, and the number of customers acquired by the user detection unit is not zero, the dimming rate of the lighting device at the window and the internal lighting device The illumination control device according to claim 2, wherein the illuminance is controlled by setting the fifth dimming ratio.   The lighting control device according to any one of claims 1 to 3, wherein the control unit subtracts the reduction request power from the current power consumption of the lighting apparatus to obtain the upper limit value.   The control unit, when the target power consumption of the lighting device exceeds the upper limit value, divides the reduction amount of the light control rate by the number of the lighting devices to obtain the target light control of the lighting device. The lighting control device according to any one of claims 1 to 4, wherein the sixth light control rate obtained by subtracting the light control rate is calculated, and the light control rate of the lighting device is set to the sixth light control rate to control the illuminance. .   When the target power consumption of the lighting device exceeds the upper limit value, the control unit is configured to adjust the dimming ratio of the lighting device in proportion to a ratio of the target dimming ratio to the total of the target dimming rates of the lighting device. The lighting control device according to any one of claims 1 to 5, wherein the reduction amount of is changed and the light control rate of the illumination fixture is set to the changed light control rate to control the illuminance.   When the target power consumption of the lighting device exceeds the upper limit value, the control unit changes the reduction amount of the dimming rate of the lighting device according to the power consumption of the lighting device, and performs light control of the lighting device The illumination control device according to any one of claims 1 to 6, wherein the illumination control is performed by setting the light control rate at which the rate is changed. A luminaire installed in each of a plurality of target areas obtained by dividing the inside of a sales department,
A lighting control system for controlling the lighting apparatus, the lighting control system comprising:
The lighting control device
A user detection unit for acquiring the number of users in the counter;
A light control rate determination unit that determines a target light control rate according to the number of users acquired by the user detection unit in each of the plurality of target areas in which the lighting fixtures are installed;
A power consumption calculation unit that calculates a target power consumption of the lighting device;
A communication unit that receives an external power reduction request and a reduction request power from the outside;
When the communication unit receives the reduction request for power consumption, the target consumption power exceeds the upper limit value of the power consumption of the lighting fixture determined in accordance with the reduction request power. A reduction amount corresponding to the difference between the electric power and the upper limit value is subtracted from the target dimming rate of the lighting device, and a value obtained by subtracting the reduced amount is used as the dimming rate of the lighting device. Control to control the illuminance of the lighting device by controlling the illuminance, and setting the dimming rate of the lighting device to the target dimming rate when the target power consumption of the lighting device is less than or equal to the upper limit value A lighting control system comprising: A computer that controls the lighting control system,
A process of determining a target dimming rate according to the number of users in each of a plurality of target areas divided in the sales floor;
A process of calculating target power consumption of the luminaire installed in the plurality of target areas;
A process of receiving an external power reduction request and an external power reduction request from outside;
If the target power consumption exceeds the upper limit value of the power consumption of the lighting fixture determined according to the reduction request power when the reduction request of the power consumption is received from the outside, the target power consumption is The reduction amount corresponding to the difference between the upper limit value and the upper limit value is subtracted from the target dimming rate of the lighting device, and a value obtained by subtracting is used as the dimming rate of the lighting device, and the illuminance of the lighting device And controlling the illuminance of the lighting device by setting the dimming rate of the lighting device to the target dimming rate when the target power consumption of the lighting device is equal to or less than the upper limit value; ,
A program to run a program.

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