JP2001068275A - Illumination control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optimize dimmer control according to various shop illumination by correcting the dimmer factor based on the difference between the prescribed model power saving rate for setting the dimmer factors of the luminaire groups in the illumination areas of a plurality of system for time zones of day and an external instruction power saving rate, and giving the control instruction of a dimmer pattern when the finely adjusted difference from the calculated daily average power saving rate is in a prescribed value. SOLUTION: A power control device PC controls the feed voltage to the feeder lines of systems 1, 2, 3 with instructions via an input interface circuit IFI for connecting human sensors MSn and illuminance sensors LSn and an output interface circuit IFO having a central processing unit CPU and a dimmer control device LC. The dimmer factors for individual systems specified by a set model power saving rate are set for time zones of day, night, and midnight, and dimmer control is corrected by the sensors and is optimized for the time zones of night and midnight by a calculation process. Optimum dimmer control is achieved so that the difference between the power saving rate instructed from the outside and the model power saving rate lies in a prescribed range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control device for performing comprehensive lighting control of natural light and artificial light using a dimming lighting device, and more particularly to lighting excellent in energy saving suitable for stores such as convenience stores and supermarkets. It relates to a control device.

[0002]

2. Description of the Related Art In recent years, in stores such as convenience stores and supermarkets, energy saving is performed by using natural light for internal lighting, or a lighting range corresponding to a layout is set and light control is performed for each range. The introduction of lighting control devices that can be used is increasing.

[0003] A conventional lighting control device has a separate control device from an illuminator such as a fluorescent lamp, and inputs clock information, illuminance sensor, human sensor information and the like into the control device, and outputs the time within 24 hours. A dimming program in which a division and a dimming level pattern are set is set in the control device in advance, and the control contents are instructed by transmitting or the like to the illuminator in the store according to the set program based on the input information. Methods of controlling the light level have been common.

Conventionally, particularly in convenience stores, the layout of stores has been standardized, so that illuminators are arranged as specified, and can be handled only by a specified dimming program set in a control device corresponding thereto. It was possible.

[0005] One example is shown in FIGS. FIG.
Shows the arrangement of the illuminator group in the store, with the system 1 that illuminates the area near the window, the system 2 that illuminates the area near the middle and the wall, and the system that illuminates the area of the counter in consideration of the influence of external light. 3 is an example of dividing into three systems. For this layout, a dimming program having two types of dimming patterns shown in FIGS. 14A and 14B is prepared.

The dimming patterns shown in FIGS. 14A and 14B will be described.

[0007] In the time zone of dimming, one day is daytime (6: 00-17
Hour), night (17: 00-21: 00) and midnight (21: 00-6 o'clock), and the illuminator is 1 /
It is divided into three systems of 2/3. Fluorescent lamps are used for the illuminators of each system.
24 lines, 28 lines L201 to L228 in line 2, and 16 lines L301 to L316 in line 3. With the dimming control for one day, the dimming pattern 1 shown in FIG.
14% in the dimming pattern 2 of FIG. 14 (b).
Is set to save power.

The dimming rate in each system 1, 2, 3 in each dimming pattern is determined by taking into account the influence of external light in each time zone as shown in FIG. 14
In (a)), during the daytime, the dimming rate of the illuminator group of each system is 55% for the system 1 in the window area due to external light. The area system 2 and the counter area system 3 are set to 100%. In the night time, this, system 1 in the window area,
Conversely, since external light cannot be expected, the system 2 is set to 75%, assuming that there are few people, and the system 3 in the counter area is set to 100%. In the late night hours, the dimming rate of the illuminator group of each system is set to 75% assuming that the window-side system 1 has a small number of people, and to 55% assuming that the middle and wall-side systems 2 are assumed to have a small number of people. The counter system 3 prepares a dimming pattern set to 100% as a specified value.

In the dimming pattern 2, as shown in FIG. 14B, a dimming rate is set for each system in each time zone, and this is a specified value of the dimming pattern.

[0010] The control device controls the amount of electricity such as input voltage and current of the illuminator group in accordance with one dimming pattern selected from these prescribed dimming patterns, and performs dimming. Was common.

[0011]

In such a conventional lighting control apparatus, a plurality of types of prescribed dimming patterns are prepared according to a preset power saving rate, and a desired pattern is selected from the patterns. Since dimming control is performed, diversification of recent demands for lighting (diversification of store layouts, diversification of the number of systems and illuminators, and expanded selection of energy saving setting levels, etc. )
When applying to stores that do so, it is necessary to prepare a large number of prescribed dimming patterns in advance, and even if a large number of prescribed dimming patterns are prepared, it is difficult to meet all diversified requests Have difficulty.

An object of the present invention is to provide a lighting control device which can respond to a variety of demands for such store lighting and can perform optimal light control.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a lighting area divided into a plurality of systems, and a required number of illuminators installed for each of the divided systems; A power supply device that controls power supplied to the illuminator group in the illumination area in accordance with an external command for each of the divided systems; and a dimming control device that provides a control command to the power supply device. An initial dimming pattern setting unit configured to previously set the dimming rate of the illuminator for each of the divided systems in a plurality of divided time periods of a day according to a predetermined model power saving rate in the light control device; A correction dimming method that corrects the dimming rate set in the initial dimming pattern setting means according to a difference between a command power saving rate arbitrarily set from the outside and the model power saving rate, and sets the corrected dimming pattern as a corrected dimming pattern. Pattern setting means, The average power saving rate per day is calculated based on the corrected dimming pattern set by the corrected dimming pattern setting means, and the calculated power saving rate is compared with the commanded power saving rate. While deviating from the predetermined value, the process of finely adjusting the set dimming rate of the corrected dimming pattern is repeatedly performed until the difference falls within the predetermined value, and the difference between the power saving rate and the model power saving rate obtained by calculation is repeated. Means for giving a control command to the power supply device based on the dimming pattern set by the corrected dimming pattern setting means when the difference falls within a predetermined value.

According to a second aspect of the present invention, in the above-mentioned apparatus, an illuminance sensor for detecting the illuminance of the illumination area is installed, and the output of the illuminance sensor is set in the corrected dimming pattern setting means of the dimming control device. The control command to the power supply device based on the adjusted light control pattern is corrected.

Further, according to the present invention, a human sensor is provided in the device for detecting whether a person enters or exits the illumination area, and the output of the human sensor is used to set a corrected dimming pattern of the dimming control device. The control command to the power supply device based on the dimming pattern set in the means is corrected.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an arrangement of illuminators and the like in a store to which the present invention is applied. The illuminator is divided into three systems from system 1 to system 3 as in the conventional example, and each system is connected as shown in FIG.

In FIG. 1, reference numeral 10 denotes a store, 11 denotes a counter thereof, and 12 denotes a warehouse. The system 1 is lighting of the window area of the sales area where daylight near the entrance of the store enters most. Line 2 is the lighting in the middle of the counter and in the window area. The system 3 is lighting arranged in a management area such as a counter and an article warehouse.

Each system is connected to a controllable power supply PS having a power converter CON for controlling the output power of the AC power supply described with reference to FIG. 3, and this power supply PS controls the dimming of the lighting. Connect to light control device LC. Light control device L
C is connected to an illuminance sensor LS for detecting the illuminance of the illumination and a human sensor MS for detecting the entrance and exit of a person to the counter.

As shown in FIG. 1, the human sensors MS are arranged in the MS 1 near the entrance, the MS 2 at the back of the store, and the MS 3 in the goods warehouse. The illuminance sensor LS is
For detection of day and night, they are arranged at a total of four positions: LS1 where daylight enters most, and LS2, LS3 and LS4 in order from the entrance in the store.

FIG. 2 shows the connection configuration of each device.

The power supply control device PC is a commercial AC power supply AC.
Connected to. The power supply lines are drawn from the power control device PC into the systems 1 to 3 separately, and the power supply lines L1, L2, L
L316 are connected to a required number of illuminators L101... L316, respectively. A human sensor MS3 placed in the warehouse
Connects the output to the illuminator L301 in the warehouse, and uses the output to directly turn on and off the illuminators L301 and L302.

The output of the dimming control device LC is connected to the power control device PC, and human sensors MS1, MS2 and illuminance sensors LS1 to LS4 are connected to the input of the dimming control device LC. A control command is given from the dimming control device LC to the power control device PC, and the power converter CON is controlled by the power control device PC. Thereby, the output power to the power supply lines L1 to L3 of each system is individually controlled,
The illuminance of the illuminator is adjusted.

FIG. 3 is a block diagram showing the internal arrangement of the power control device PC and the dimming control device LC.

The power supply control device PC controls the supply voltage of the commercial AC power supply AC of 200 V to the power supply lines L1, L2, L3 of the system based on a command from the dimming control device LC. The dimming control device LC includes the human sensor MS and the illuminance sensor L.
A central processing unit CP having an input interface circuit IFI for S connection and an output interface circuit IFO for connecting to the power supply control device PC and performing control and calculation.
It has a configuration with U.

Hereinafter, optimization control of light control by such a light control device will be described.

In the dimming control device LC, a dimming pattern when the model power saving rate shown in FIG. 4 is set to, for example, 20% is previously set in the setting means in the memory as an initial dimming pattern. The initial dimming pattern is defined by setting an individual dimming rate for each system of the illuminator for each of the divided time zones as shown in FIG.

In order to set such an initial dimming pattern, the number N of illuminators (light sources) in an illumination area in a store is first determined by the following illuminance calculation used in a generally known illumination design. I can decide. The maintenance rate indicates how much of the required illuminance can be obtained even when the illuminance is reduced by what percentage. Indoors it is generally around 0.5-0.8.

N = (E × A) / (φ × U × M) (1) where N = number of lamps of light source E = average illuminance (lux) A = floor area (m ² ) φ = light flux of light source (lm) M = Maintenance rate = (illuminance to be ensured) / (initial illuminance) U = illumination rate = (total luminous flux (lm) incident on the work surface) / total lamp luminous flux (lm) When the store to be installed is determined , Target average illuminance (E), floor area (A), lamp performance (luminous flux (l
m)), the number N of illuminators to be used in the entire store of the illuminator is determined by the above equation (1). The required number of illuminators is divided into a plurality of systems depending on the layout of the store.
In the embodiment, an example is shown in which 68 illuminators are divided into three systems of system 1 = 24, system 2 = 28, and system 3 = 16.

Further, one day (24 hours) is divided into three time zones of day, night, and midnight, and the average total power saving rate of 24 hours is, for example, 2 hours.
The dimming rate in each time zone is previously prepared as an initial value as 0%. It is not necessary to set the power saving rate to 20%, but in the present embodiment, 20% will be described below as an initial value.

FIG. 8 shows a control flow of the dimming control device LC in the embodiment of the present invention.

The dimming control device LC has a clock inside, and monitors arrival at each time zone shown in FIG. 4 (S
1). If it is determined that the current time of the clock is during the daytime zone, the individual dimming rate in the daytime zone is set for each system as the supply voltage to the illuminator according to the dimming optimization calculation process described later (S11). In this case, initially, each dimming rate setting value of the initial dimming pattern shown in FIG. 4 is used. According to this, optimal control is performed by fine adjustment control of the supply voltage to each system (S12).

Thereafter, the end of the daytime zone is monitored while performing correction control by the human sensor MS and the illuminance sensor LS described later (S13). That is, before the end of the daytime zone, the illuminance sensor LS1 of FIG. 1 (for monitoring external light)
And monitors whether the input from this sensor is smaller than the designated daylight level (S16).
If No, control in the daytime zone is continued, and if Yes, the daytime zone is shortened to this point and the control immediately shifts to nighttime zone control (S17).

The illuminance sensor LS1 even after the end of the daytime
Is higher than the designated daylight level (S1
4) The daytime zone is extended for a predetermined time (n minutes), for example, 15 minutes (S15), and the control of the daytime zone is continued.

In the night time zone, the individual dimming rate in the night time zone is set in the same manner as described above (S21), and the end of the time zone is monitored while performing dimming optimization calculation processing and correction control described later (S22, S23).

When the night time zone ends, the process shifts to the midnight time zone. Here, similarly, the end of the time period is monitored while performing the dimming optimization calculation processing and the correction control described later (S31, S
32, S33).

When the midnight time zone ends, control returns to the daytime time zone control described first.

The dimming optimization calculation processing will be described with reference to FIG. The dimming control device PC has a new power saving rate SP from outside.
When i is commanded, a difference A from the built-in model power saving rate SP is calculated. In this embodiment, the model power saving rate is 20% shown in FIG. The power saving rate SPi commanded from outside is 1
FIGS. 5 to 7 show examples of dimming patterns obtained by performing arithmetic processing in the case of changing from 0% to 40%.

The calculation process when the power saving rate is instructed to be 10% will be described. Procedure 1: A calculation process for calculating a difference A between the newly instructed power saving rate SPi = 10% and the built-in model power saving rate SPm = 20% is performed (S91). Since the result is 10%, the initial dimming rate of each system in each time zone set in the initial dimming pattern table shown in FIG.
0%) and set as a corrected dimming pattern (S92).

FIG. 5 shows a corrected dimming pattern table created by rewriting the initial dimming rate of each system in each time zone set in the initial dimming pattern table of FIG. 4 by adding 10% to each value. Step 2: Next, an average individual dimming rate for each system is calculated based on the corrected dimming pattern table (S93).

The average individual dimming rate per day for each system is: individual dimming rate (%) = Σm (time zone dimming rate × time zone dimming rate) m / 24 hours, where m is the number of time zone divisions It is. Therefore, the individual dimming rate of each system is as follows.

Individual dimming rate of system (1) = [(11 hours ×
70%) + (4 hours × 100%) + (9 hours × 95
%)] / 24 hours = 84.3 Individual dimming rate of system (2) = [(11 hours × 100%) +
(4 hours x 95%) + (9 hours x 80%)] / 24 hours = 9
1.66 Individual dimming rate of system (3) = [(11 hours x 100%) +
(4 hours x 100%) + (9 hours x 90%)] / 24 hours =
96.25 Procedure 3: Next, based on the above results, calculate the average total dimming rate of one day, that is, the average dimming rate of all systems (S9).
4). The total dimming rate is: total dimming rate (%) = [(dimming rate of system (1) × system (1)
Number of fixtures) + (dimming ratio of system (2) × number of appliances of system (2)) + (dimming ratio of system (3) × number of appliances of system (3))] /
Since the total dimming rate in the embodiment is obtained as the total number of fixtures, the total dimming rate is [84.3 × 24) + (91.6 × 28) + (96.25 × 1
6)] / (24 + 28 + 16) = 90.1%. Step 4: The total dimming rate result is compared and verified with the power saving rate of the command.

X (difference) = (100−total dimming rate) − (command power saving rate) = (100−90.1) −10 = −0.1 As a result of the above, if X is ± 1 or less, the calculation process is performed. finish. Step 5: As a result of the above, when X is out of the range of ± 1, the correction value is set to X%, and the procedure returns to step 1 to finely adjust the set value of the dimming rate in the corrected dimming pattern table. This is repeated until the difference X falls within the range of ± 1. Based on the corrected dimming pattern where X falls within the range of ± 1, the dimming control device LC controls the power supply control device PC to optimally dimming all the illuminators. Here, X may be arbitrarily determined, but is set to 1 in the embodiment.

Next, a description will be given of the fine adjustment of the control performed when a person enters or exits the store.

FIG. 10 shows the contents of the setting when the light adjustment control device LC is initially set as to whether or not the fine adjustment is to be performed by entering or exiting a person. FIG. 10 shows an example in which the correction control by the human sensor is unnecessary in the daytime period, and the correction is performed when a person enters the store only in the late night time zone. When the presence of a person in the store is detected by the human sensor MS, the illuminance of the lighting of all systems is set to 900 lux.

FIG. 13 shows a control flow in this case.

Procedure 1 (S81, S82) Human sensor MS
When a person detects and turns on a person, it determines whether or not there is a correction setting based on the entry of the person (there is a human sensor correction?).

Procedure 2 (S83, S84, S85) If there is a setting, a 15-minute timer is set and each set dimming rate is corrected.

The contents are shown in FIG. This figure 1
1A shows the dimming rate before correction, and FIG. 1B shows the dimming rate after correction.

Before the correction, the system 1 has 700 lux, the system 2 has 800 lux, and the system 3 has 850 lux. Therefore, the dimming rate of each system is determined by the illuminance sensors LS2 to LS2 which detect the illuminance of each system.
Correction control is performed from S4 until the designated illuminance of 900 lux is detected.

The results shown in FIG. 11B show that the dimming rate is 100% for the system 1, 95% for the system 2, and 95% for the system 3, respectively.
The result is that the illuminance of each area is 900l
becomes ux, indicating that the fine adjustment has been completed.

Step 3 (S88, S89) When the human sensor is turned on again with the illuminance in the corrected state, the set time of the timer is further extended.

Procedure (S86, S90) If the timer times out, the set dimming rate of each system is returned to the value before correction, and this correction processing ends.

[0054]

According to the present invention, only one dimming pattern corresponding to a predetermined model power saving rate is initialized in advance, and when operation at a power saving rate other than this model power saving rate becomes necessary, By externally instructing a desired power saving rate, the initial setting dimming pattern is corrected and calculated, and a new corrected dimming pattern that can be operated at the specified power saving rate is newly created. Since the dimming control is performed based on the dimming control, the initial setting of the dimming pattern is easy, and the control can be performed with an arbitrary dimming pattern. Therefore, it is possible to flexibly cope with the diversification of stores, and it is possible to obtain an effect of enabling optimal energy saving control.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an arrangement of illuminators and the like in a store showing an embodiment of the present invention.

FIG. 2 is a connection configuration diagram of a control device showing an embodiment of the present invention.

FIG. 3 is a block diagram of a control device according to the present invention.

FIG. 4 shows an example of setting an initial dimming pattern used in the embodiment of the present invention.

FIG. 5 shows an example of setting a corrected dimming pattern when the command power saving rate is set to 10% in the embodiment of the present invention.

FIG. 6 shows an example of setting a corrected dimming pattern when the command power saving rate is 30% in the embodiment of the present invention.

FIG. 7 shows an example of setting a corrected dimming pattern when the command power saving rate is set to 40% in the embodiment of the present invention.

FIG. 8 is a diagram showing a control flow of dimming control in the embodiment of the present invention.

FIG. 9 is a diagram showing a dimming optimization control calculation flow in the embodiment of the present invention.

FIG. 10 shows the contents of initial settings for correction control by a human sensor in the embodiment of the present invention.

FIG. 11 is a diagram used to explain correction control by a human sensor in the embodiment of the present invention.

FIG. 12 is a diagram illustrating a control flow of correction control by a human sensor according to the embodiment of the present invention.

FIG. 13 is a configuration diagram showing an arrangement of illuminators and the like in a conventional store.

FIG. 14 is a diagram used for describing a conventional device.

[Explanation of symbols]

10: store, 11: sales floor, 12: warehouse, PS: power supply, PC: power supply control, LC: dimming control, L1: power supply line of system 1, L2: power supply line of system 2,
L3: power supply line of system 3, L101 to L316: illuminator, MS1 to MS3: human sensor, LS1 to LS
4: Illuminance sensor.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04Q 9/00 301 H04Q 9/00 301B 311 311P 321 321D 9/02 9/02 B (72) Inventor Kiyohiko Sudo Kanagawa 1-1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi F-term in Fuji Electric Co., Ltd. (reference) HA01 HA02

Claims (3)

[Claims] An illumination area which is divided into a plurality of systems, and a required number of illuminators are installed for each of the divided systems, and a power supply to the illuminator group of the illumination area is divided into the divided systems. A power supply device that controls the power supply device according to an external command, and a dimming control device that provides a control command to the power supply device. Initial dimming pattern setting means for presetting the dimming rate of the illuminator for each of the divided systems for each of the divided time zones, and a command power saving rate arbitrarily set from the outside and the model power saving rate Correction dimming pattern setting means for correcting the dimming rate set in the initial dimming pattern setting means according to the difference and setting the corrected dimming pattern; and correcting dimming set in the corrected dimming pattern setting means Based on pattern The average power saving rate per day is obtained by calculation, and the power saving rate obtained by this calculation is compared with the command power saving rate. While the difference is out of a predetermined value, the difference is within a predetermined value. The process of finely adjusting the set dimming rate of the corrected dimming pattern is repeated until it falls within the range, and when the difference between the power saving rate obtained by the calculation and the model power saving rate falls within a predetermined value, the corrected dimming pattern setting is performed. Means for giving a control command to the power supply device based on the dimming pattern set in the means. 2. An apparatus according to claim 1, further comprising an illuminance sensor for detecting the illuminance of the illumination area, and outputting a control command to the power supply device based on a corrected dimming program of the dimming control device based on an output of the illuminance sensor. An illumination control device characterized by correcting. 3. The dimming control program for the dimming control device according to claim 1, further comprising a human sensor for detecting whether a person enters or exits the illumination area in the device according to claim 1 or 2. A lighting control device for correcting a control command to a power supply device according to the above.