JP5921242B2 - Lighting control system and lighting control method - Google Patents

Description

  The present invention relates to a technology of an illumination control system and an illumination control method that can obtain appropriate illuminance at an arbitrary position.

  Conventionally, a technique of an illumination control system and an illumination control method capable of obtaining appropriate illuminance at an arbitrary position has been publicly known. For example, it is as described in Patent Document 1 and Patent Document 2.

  In the technique described in Patent Document 1, a plurality of lighting fixtures that can adjust the light intensity and one or more that are arranged at a predetermined position and detect the comfort level (illuminance in Patent Document 1) of the position. The illuminance sensor device, and the illuminance sensor device controls the light intensity of each luminaire based on the illuminance detected by the illuminance sensor device or the positional relationship between the luminaire and the illuminance sensor device. An appropriate illuminance can be obtained at the arranged position.

  Patent Document 2 discloses an illumination control system that can more accurately determine information related to the positional relationship between each illumination fixture and the illuminance sensor device that is necessary when controlling the luminous intensity of each illumination fixture.

JP 2008-016291 A JP 2008-243748 A

  However, in the techniques described in Patent Literature 1 and Patent Literature 2, information on the positional relationship between each lighting fixture and the illuminance sensor device is required when controlling the luminous intensity of each lighting fixture as described above. Therefore, when the position of each lighting fixture or the illuminance sensor device or the relative positional relationship between each lighting fixture and the illuminance sensor device is not known, the light intensity of each lighting fixture cannot be appropriately controlled. Therefore, for example, when each luminaire or illuminance sensor device moves, it is necessary to acquire information on the positional relationship between each luminaire and the illuminance sensor device again.

  Similarly, since information on the positional relationship between each luminaire and the illuminance sensor device is required when controlling the luminous intensity of each luminaire, each luminaire follows the moving object (illuminance sensor device). It is difficult to appropriately control the luminous intensity.

Further, the techniques described in Patent Document 1 and Patent Document 2 detect the illuminance at a predetermined position. For example, when detecting the comfort level (discomfort felt by a person) instead of the illuminance, as described above. It becomes difficult to control the light intensity of each lighting fixture.
Specifically, when the luminous intensity of each lighting fixture is controlled based on the detected illuminance, the luminous intensity of each lighting fixture may be controlled so that the detected illuminance becomes a predetermined appropriate illuminance.
However, when the light intensity of each lighting apparatus is controlled based on the comfort level, the comfort level (discomfort) is different for each person even in the same environment. On the other hand, the reverse instruction may be sent simultaneously. For example, if one person feels uncomfortable because the room is too dark, and another person feels uncomfortable because the room is too bright, an instruction to increase the luminous intensity and an instruction to decrease the luminous intensity are sent simultaneously to one luminaire. It is done. In this way, by sending a contradictory instruction to one lighting fixture, it becomes difficult to appropriately control the luminous intensity of each lighting fixture.

  The present invention has been made in view of the above problems, and the problem to be solved is to use a plurality of lighting fixtures and comfort level detection means, and to use the plurality of lighting fixtures and comfort level detection means. Provided are a lighting control system and a lighting control method capable of appropriately controlling the light intensity of each lighting fixture so that the comfort level detected by each comfort level detection means is improved even if the positional relationship with the lighting position is unknown. That is.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In other words, in claim 1, a plurality of lighting fixtures capable of adjusting the luminous intensity, a plurality of comfort level detecting means for detecting the comfort level, and an input voltage for adjusting the luminous intensity of each lighting fixture are calculated. The degree of comfort detected by each comfort level detection unit or the level of comfort detected by each level of comfort detection unit can be determined by repeating lighting control that adjusts the luminous intensity of each lighting fixture based on the input voltage. A control device that causes an average comfort level that is an average value to be within a preset target range, and the control device performs the lighting control each time the lighting control is performed. calculates the average comfort level based on the comfort detected by the comfort degree detecting means, an average value of the input voltage calculated Te smell each repeated a the lighting control in the past, Calculating a weighted average value weighted as the input voltage at the average comfort level was higher the lighting control of the repeated the said lighting control is a weighted average so as to increase the removed by, before Kikasane the value in the vicinity of the dividing point between the average value and the previous input voltage in a lighting control with look, it is an input voltage at the next lighting control.

According to a second aspect of the present invention, as the average comfort level in the previous lighting control is higher, the control device guides an input voltage in the next lighting control in a direction in which the luminous intensity of each lighting fixture is lower .

According to a third aspect of the present invention, the control device determines an input voltage in the next lighting control from a predetermined noise range with the inner dividing point as a reference .

In Claim 4, the input voltage for adjusting the luminous intensity of each said lighting fixture is calculated using the several lighting fixture which can adjust luminous intensity, and the several comfort level detection means which detects a comfort level. At the same time, by repeating lighting control for adjusting the light intensity of each lighting fixture based on the input voltage, the comfort level detected by each comfort level detection unit or the comfort level detected by each comfort level detection unit The average comfort level, which is an average value of the degree, is an illumination control method in which the average comfort level is within a preset target range, and the comfort level detected by each comfort level detection unit each time the lighting control is performed. Calculating the average comfort level based on the degree and the average value of the input voltage calculated in each of the lighting control repeatedly performed in the past, and the lighting repeatedly performed in the past A step of calculating a weighted average value that is a weighted average value so that the weight of the input voltage in the lighting control having a higher average comfort level is greater, and the weighted average value and the previous lighting And a step of setting a value in the vicinity of the internal dividing point with respect to the input voltage in the control as an input voltage in the next lighting control .

According to the fifth aspect, the higher the average comfort level in the previous lighting control, the more the input voltage in the next lighting control is guided in the direction in which the luminous intensity of each lighting fixture is lowered .

According to a sixth aspect of the present invention, an input voltage in the next lighting control is determined from a predetermined noise range with the inner dividing point as a reference .

  As effects of the present invention, the following effects can be obtained.

  In claim 1, even if the positional relationship between the plurality of lighting fixtures and the comfort level detection means is unknown, the luminous intensity of each lighting fixture is appropriately set so that the comfort level detected by each comfort level detection means is improved. Can be controlled.

According to the first aspect of the present invention, if the position of the internal dividing point is adjusted (closer to the previous input voltage side), it is possible to prevent the luminous intensity of each lighting fixture from changing suddenly in the lighting control.

In Claim 2 , in lighting control, energy saving can be achieved by preventing the luminous intensity of each lighting fixture from becoming higher than necessary.

In claim 3 , even if the positional relationship between the plurality of lighting fixtures and the comfort level detection means is unknown, the luminous intensity of each lighting fixture is appropriately set so that the comfort level detected by each comfort level detection means is improved. And it can be controlled easily.

In claim 4 , even if the positional relationship between the plurality of lighting fixtures and the comfort level detection means is unknown, the luminous intensity of each lighting fixture is appropriately set so that the comfort level detected by each comfort level detection means is improved. Can be controlled.

Further, in claim 4 , if the position of the internal dividing point is adjusted (closer to the previous input voltage side), it is possible to prevent the luminous intensity of each luminaire from changing suddenly in the illumination control.

In Claim 5 , in lighting control, energy saving can be achieved by preventing the luminous intensity of each lighting fixture from becoming higher than necessary.

In claim 6 , even if the positional relationship between the plurality of lighting fixtures and the comfort level detection means is unknown, the luminous intensity of each lighting fixture is appropriately set so that the comfort level detected by each comfort level detection means is improved. And it can be controlled easily.

The schematic diagram which showed the whole structure of the illumination control system which concerns on 1st embodiment of this invention. Similarly, the flowchart which showed the control aspect (illumination control method) by an illumination control system. (A) The figure which showed the initial value of the input voltage. (B) The figure which showed the range of the noise on the basis of the point p1. A map for calculating comfort. (A) The figure which showed the range of the noise on the basis of the point p1, and the next input voltage. (B) The figure which showed the weighted average value r2 of the point p1 and the point p2. The figure which showed the middle point M2 of the point p2 and the weighted average value r2. (A) The figure which showed the range of the noise on the basis of the point M2, and the next input voltage. (B) The figure which showed the weighted average value r3 of the point p1, the point p2, and the point p3. The figure which showed the middle point M2 of the point p3 and the weighted average value r3. The flowchart which showed the control aspect (illumination control method) using SA by the illumination control system which concerns on 2nd embodiment. (A) The figure which showed the case where the next input voltage was determined from the circumference | surroundings of a preservation | save input voltage. (B) The figure which showed the case where the next input voltage was determined from the circumference | surroundings of the last input voltage. The flowchart which showed the control aspect (illumination control method) by the illumination control system which concerns on 3rd embodiment.

  Below, the illumination control system 1 which concerns on 1st embodiment of this invention is demonstrated.

First, the whole structure of the illumination control system 1 is demonstrated using FIG.
In addition, the dashed-two dotted line described in FIG. 1 has shown that the member connected with the two-dot chain line is electrically connected.

  The illumination control system 1 is for controlling the illumination in the room 10 (adjusting the illuminance). In the present embodiment, the room 10 is a room in which many people such as stores and offices are present, and forms a substantially rectangular parallelepiped space therein.

  The illumination control system 1 is mainly composed of a plurality of lighting fixtures 2..., A plurality of illuminance sensors 3.

  The lighting fixtures 2... Illuminate the interior of the room 10. The lighting fixtures 2... Are suspended from the ceiling of the room 10. The lighting fixtures 2, 2... Are arranged at appropriate intervals so that the entire interior of the room 10 can be illuminated. The luminaires 2, 2... Can adjust (control) the light intensity by adjusting the input voltage (input voltage).

  The illuminance sensors 3, 3... Are an embodiment of the comfort level detecting means according to the present invention and detect illuminance. The illuminance sensors 3, 3,... Are arranged at locations where “comfort level” needs to be detected in the room 10.

Here, the “comfort level” indicates the degree of pleasure / discomfort that a person feels from the surrounding environment.
In the present embodiment, based on the illuminance detected by each illuminance sensor 3..., The comfort level at the position where the illuminance sensor 3. A method for calculating the comfort level will be described later.

  The control device 4 performs illumination control for adjusting the luminous intensity of the lighting fixtures 2, 2... Based on the illuminance detected by the illuminance sensors 3. The control device 4 is mainly configured by an arithmetic processing device such as a CPU, a storage device such as a RAM and a ROM, an input / output device such as an I / O, and the like.

The control device 4 is electrically connected to the lighting fixtures 2. And the control apparatus 4 can transmit the signal (command) regarding adjustment of the input voltage to the lighting fixtures 2.
In FIG. 1, only one lighting fixture 2 is connected to the control device 4 by a two-dot chain line for simplification of the drawing, but in actuality, all the lighting fixtures 2. The apparatus 4 is electrically connected.

The control device 4 is electrically connected to the illuminance sensors 3. And the control apparatus 4 can receive the signal regarding the detection result (detected illuminance) by the illuminance sensors 3.
In FIG. 1, only one illuminance sensor 3 is connected to the control device 4 by a two-dot chain line for simplification of the drawing, but in actuality, control is performed with all illuminance sensors 3. The apparatus 4 is electrically connected.

  The control device 4 stores various data for controlling the illumination in the room 10 (adjusting the illuminance). More specifically, the control device 4 includes data relating to the relationship between the input voltage and the light intensity of each lighting fixture 2..., The illuminance detected by the illuminance sensors 3, 3. Data relating to the relationship between the difference between the illuminance and the comfort level is stored.

Next, with reference to FIG. 1 to FIG. 8, the lighting control method (lighting control method) in the room 10 by the lighting control system 1 configured as described above will be described.
In the following, for simplification of explanation, the lighting control system includes the first lighting fixture 2a and the second lighting among the lighting fixtures 2 · 2 ··· and the illuminance sensors 3 · 3 ··· shown in FIG. It is assumed that the lighting in the room 10 is controlled using only the appliance 2b and the first illuminance sensor 3a and the second illuminance sensor 3b.

In step S100 of FIG. 2, the control device 4 determines initial values such as the input voltage x1 of the first lighting fixture 2a and the input voltage x2 of the second lighting fixture 2b.
Here, since information for calculating an appropriate input voltage has not yet been obtained, for example, the input voltages x1 and x2 are provisionally determined to be 50% (50% of the maximum input voltage), respectively (FIG. 3A )).
In addition, the control device 4 also determines a target comfort range that is a target of the average comfort level K described later.
After performing the above processing, the control device 4 proceeds to step S101.

In step S101, the control device 4 applies the input voltages x1 and x2 determined in step S100 to the first lighting fixture 2a and the second lighting fixture 2b, respectively, and the luminous intensity of the first lighting fixture 2a and the second lighting fixture 2b. Adjust.
After performing the above processing, the control device 4 proceeds to step S102.

In step S102, the control device 4 calculates the average comfort level K.
Hereinafter, the process of step S102 will be described in detail.

  First, the control device 4 is based on the illuminance detected by the first illuminance sensor 3a and the second illuminance sensor 3b, at the position where each illuminance sensor 3 (first illuminance sensor 3a and second illuminance sensor 3b) is arranged. Each comfort level ki (comfort level k1 · k2) is calculated.

  Specifically, the control device 4 determines the absolute value (absolute difference) between the illuminance detected by the first illuminance sensor 3 a and the second illuminance sensor 3 b and the illuminance (target illuminance) that is a preset target. ) L (lx) is calculated. The comfort levels k1 and k2 corresponding to the absolute difference L are calculated from the calculated absolute difference L and a map as shown in FIG. In the present embodiment, the comfort level k1 = 0.4 at the position where the first illuminance sensor 3a is disposed, and the comfort level k2 = 0.2 at the position where the second illuminance sensor 3b is disposed (FIG. (Refer to point p1 in 3 (a)).

  Next, the control device 4 calculates an average comfort level K that is an average value of the comfort levels k1 and k2 at the positions where the illuminance sensors 3 (the first illuminance sensor 3a and the second illuminance sensor 3b) are arranged. In the present embodiment, the average comfort level K (the average value of the comfort levels k1 and k2) = 0.3 (see point p1 in FIG. 3A).

  After performing the process of step S102, the control device 4 proceeds to step S103.

In step S103, the control device 4 determines whether or not the average comfort level K calculated in step S102 is within the target comfort range.
When the control device 4 determines that the average comfort level K is within the target comfort range, the control device 4 determines that all the people in the room 10 are comfortable to some extent and ends this control (or temporarily Stop. When this control is temporarily stopped, the control device 4 determines the average comfort level at a predetermined timing (for example, a predetermined time elapses or the position of the illuminance sensors 3 3... Changes). This control is resumed again when K is outside the target comfortable range.
When determining that the average comfort level K is not within the target comfort range, the control device 4 proceeds to step S104.

  In the present embodiment, it is assumed that the target comfortable range is K> 0.8. Since the average comfort level K calculated in step S102 is 0.3, the average comfort level K is not within the target comfort range. For this reason, the control apparatus 4 transfers to step S104.

In step S104, the control device 4 determines the input voltages x1 and x2 to be next applied to the first lighting fixture 2a and the second lighting fixture 2b using the biological fluctuation theory.
Hereinafter, the process of step S104 will be described in detail.

  The control device 4 determines an input voltage xi (input voltage x1 · x2) to be next applied to the first lighting fixture 2a and the second lighting fixture 2b based on the following equation (1).

  Note that t is a natural number starting from 1. Each time the control device 4 repeats the processing from step s101 to step S104 in FIG. 2 (hereinafter, this processing (control) is simply referred to as “illumination control”), t is Increase by one. That is, in this embodiment, when t = 1, the input voltage xi (input voltage x1 · x2) is 50%, which is an initial value.

  Here, among the above formula 1, the term represented by the following formula 2 is a weighted average value of the input voltage calculated from the past input voltage and the weighting coefficient.

  That is, the above formula 1 is the vicinity of the internal dividing point between the previous input voltage and the weighted average value of the input voltage calculated from the past input voltage (more specifically, the internal dividing point is used as a reference). Within the range of noise ηi), the next input voltage is determined.

  Here, the weighting coefficient w is set so as to increase sequentially from the past input voltage having the highest average comfort level K. The value of the weight coefficient w is stored in the control device 4 in advance.

  In the above embodiment, when calculating the next input voltage xi (2) (that is, at t = 2), the past input voltage xi (t−j) is only one of xi (1) = 50%. The weight coefficient w = 1.0, and the weighted average value is also 50%.

  In the present embodiment, the internal content η = 0.5. That is, the noise ηi is given on the basis of the midpoint between the previous input voltage and the weighted average value of the input voltage calculated from the past input voltage.

  In step S104 (when the input voltage xi (2) at t = 2 is determined), both the previous input voltage xi (1) and the weighted average value of the input voltage calculated from the past input voltage are 50. Therefore, the reference of the noise ηi is the same point as the previous input voltage xi (1) (point p1 in FIGS. 3A and 3B).

  The control device 4 determines the next input voltage xi (2) from the range of the noise ηi with reference to the point p1 in FIG. 3B (within the range indicated by the two-dot chain line in FIG. 3B). To do.

  Here, the noise ηi can be set in a normal distribution such as the following Equation 3, for example.

  The term “energy saving effect” in the above equation 3 indicates that the higher the average comfort level K is, the easier it is to generate negative noise ηi, thereby reducing the input voltage xi (that is, the first lighting fixture 2a and the second lighting fixture 2a). In the direction in which the luminous intensity of the luminaire 2b decreases. Thus, when the average comfort level K is high, wasteful power consumption can be suppressed and energy saving can be achieved.

  In addition, the term “dispersion” in Equation 3 increases as the average comfort level K decreases, and generates a wide range of noise ηi. As a result, when the average comfort level K is low, the next input voltage xi can be searched from a wide range, and the average comfort level K can be quickly brought into the target comfort range.

  In the present embodiment, the control device 4 determines the next input voltages as x1 (2) = 30% and x2 (2) = 20% (see point p2 in FIG. 5A). .

  After performing the process of step S104, the control device 4 proceeds to step S101 and starts illumination control (the process from step S101 to step S104) again.

In step S101, the control device 4 applies the input voltages x1 and x2 determined in the previous step S104 to the first lighting fixture 2a and the second lighting fixture 2b, respectively, and the first lighting fixture 2a and the second lighting fixture 2b. Adjust the light intensity. That is, the input voltage x1 (2) = 30% is applied to the first lighting fixture 2a, and the input voltage x2 (2) = 20% is applied to the second lighting fixture 2b.
After performing the above processing, the control device 4 proceeds to step S102.

In step S102, the control device 4 calculates the average comfort level K.
The control device 4 calculates the average comfort level K by the same method as in the previous step S102. That is, based on the difference between the illuminance detected by the first illuminance sensor 3a and the second illuminance sensor 3b and the target (comfort) illuminance and the map shown in FIG. 4, the comfort level at the position where each illuminance sensor 3 is arranged is calculated. Each is calculated, and an average comfort level K that is an average value of the comfort levels is calculated.

  In the present embodiment, it is assumed that the average comfort level K = 0.2 calculated in step S102 of this time (see point p2 in FIG. 5A).

  After performing the process of step S102, the control device 4 proceeds to step S103.

In step S103, the control device 4 determines whether or not the average comfort level K calculated in step S102 is within the target comfort range.
When it is determined that the average comfort level K is within the target comfort range, the control device 4 ends (or temporarily stops) this control.
When determining that the average comfort level K is not within the target comfort range, the control device 4 proceeds to step S104.

  In the present embodiment, the target comfort range is K> 0.8, and the average comfort level K calculated in step S102 is 0.2. Therefore, the average comfort level K is within the target comfort range. Absent. For this reason, the control apparatus 4 transfers to step S104.

In step S104, the control device 4 determines the input voltages x1 and x2 to be next applied to the first lighting fixture 2a and the second lighting fixture 2b using the biological fluctuation theory.
Hereinafter, the process of step S104 will be described in detail.

  The control device 4 determines the input voltage xi (input voltage x1 · x2) to be next applied to the first lighting fixture 2a and the second lighting fixture 2b based on the above-described Equation 1.

  Here, of the equation 1, the term represented by the equation 2 is the past input voltage (that is, the input voltage xi (1) at t = 1 and the input voltage xi (2) at t = 2). It is a weighted average value of the input voltage calculated from the weighting coefficient.

  In the above embodiment, when calculating the next input voltage xi (3) (that is, at t = 3), as the past input voltage xi (3-j), xi (1) and xi (2) (FIG. There are two input voltages at point p1 and point p2) in 5 (b), the respective average comfort levels are 0.3 and 0.2. Thus, for example, the weighting factor w corresponding to xi (1) having a high average comfort level K (point p1 in FIG. 5B) is 0.7, and xi (2) having a low average comfort level K (FIG. 5B). The weighting factor w corresponding to the point p2) is 0.3. In this case, the weighted average value of the past input voltage xi (3-j) is assumed to be a point r2 in FIG.

  In the present embodiment, since the internal component η = 0.5, the reference of the noise ηi is the previous input voltage xi (2) (that is, the point p2 in FIGS. 5B and 6). ), The weighted average value of the input voltage calculated from the past input voltage (that is, the point r2 in FIGS. 5B and 6), and the midpoint M2 (see FIG. 6).

  The control device 4 generates the next input voltage xi (3) from the range of the noise ηi with reference to the midpoint M2 in FIG. 7A (within the range indicated by the two-dot chain line in FIG. 7A). decide. In the present embodiment, the control device 4 determines the next input voltages as x1 (3) = 80% and x2 (3) = 40% (see point p3 in FIG. 7A). .

  After performing the process of step S104, the control device 4 proceeds to step S101 and starts illumination control (the process from step S101 to step S104) again.

In step S101, the control device 4 applies the input voltages x1 and x2 determined in the previous step S104 to the first lighting fixture 2a and the second lighting fixture 2b, respectively, and the first lighting fixture 2a and the second lighting fixture 2b. Adjust the light intensity. That is, the input voltage x1 (3) = 80% is applied to the first lighting fixture 2a, and the input voltage x2 (3) = 40% is applied to the second lighting fixture 2b.
After performing the above processing, the control device 4 proceeds to step S102.

In step S102, the control device 4 calculates the average comfort level K.
The control device 4 calculates the average comfort level K by the same method as in the previous step S102. That is, based on the difference between the illuminance detected by the first illuminance sensor 3a and the second illuminance sensor 3b and the target (comfort) illuminance and the map shown in FIG. 4, the comfort level at the position where each illuminance sensor 3 is arranged is calculated. Each is calculated, and an average comfort level K that is an average value of the comfort levels is calculated.

  In the present embodiment, it is assumed that the average comfort level K = 0.7 calculated in step S102 of this time (see point p3 in FIG. 7A).

  After performing the process of step S102, the control device 4 proceeds to step S103.

In step S103, the control device 4 determines whether or not the average comfort level K calculated in step S102 is within the target comfort range.
When it is determined that the average comfort level K is within the target comfort range, the control device 4 ends (or temporarily stops) this control.
When determining that the average comfort level K is not within the target comfort range, the control device 4 proceeds to step S104.

  In the present embodiment, the target comfort range is K> 0.8, and the average comfort level K calculated in step S102 is 0.7. Therefore, the average comfort level K is within the target comfort range. Absent. For this reason, the control apparatus 4 transfers to step S104.

In step S104, the control device 4 determines the input voltages x1 and x2 to be next applied to the first lighting fixture 2a and the second lighting fixture 2b using the biological fluctuation theory.
Hereinafter, the process of step S104 will be described in detail.

  The control device 4 determines the input voltage xi (input voltage x1 · x2) to be next applied to the first lighting fixture 2a and the second lighting fixture 2b based on the above-described Equation 1.

  Here, of the equation 1, the term represented by the above equation 2 represents the past input voltage (that is, the input voltage xi (1) at t = 1, the input voltage xi (2) at t = 2, and t = Input voltage xi (3) at 3) and the weighted average value of the input voltage calculated from the weighting coefficient.

  In the above embodiment, when calculating the next input voltage xi (4) (that is, at t = 4), as the past input voltage xi (4-j), xi (1), xi (2), and xi (3) There are three input voltages (points p1, p2 and p3 in FIG. 7B), and the average comfort levels are 0.3, 0.2 and 0.7, respectively. Therefore, for example, the weight coefficient w corresponding to xi (3) having the highest average comfort level K (point p3 in FIG. 7B) is 0.6, and xi (1) having the second highest average comfort level K (FIG. 7). The weighting factor w corresponding to point p1) in 7 (b) is 0.3, and the weighting factor w corresponding to xi (2) having the lowest average comfort level K (point p2 in FIG. 7B) is 0.1. And In this case, the weighted average value of the past input voltage xi (4-j) is assumed to be a point r3 in FIG.

  In the present embodiment, since the internal fraction η = 0.5, the reference of the noise ηi is the previous input voltage xi (3) (that is, the point p3 in FIGS. 7B and 8). ), The weighted average value of the input voltage calculated from the past input voltage (that is, the point r3 in FIGS. 7B and 6), and the midpoint M3 (see FIG. 8).

  The control device 4 determines the next input voltage xi (4) from the range of the noise ηi with reference to the middle point M3 in FIG.

  After performing the process of step S104, the control device 4 proceeds to step S101 and starts illumination control (the process from step S101 to step S104) again.

  As described above, the control device 4 repeatedly performs the illumination control (the processing from step S101 to step S104) until the average comfort level K falls within a preset target range (K> 0.8). In this way, the control device 4 can control the comfort level detected by each illuminance sensor (the first illuminance sensor 3a and the second illuminance sensor 3b) to be high.

  As described above, the lighting control system 1 according to the present embodiment includes a plurality of lighting fixtures 2... Capable of adjusting the light intensity, and a plurality of illuminance sensors 3. Intensity detecting means) and an input voltage for adjusting the luminous intensity of each of the lighting fixtures 2, 2... And lighting for adjusting the luminous intensity of each of the lighting fixtures 2, 2. A control device that causes the average comfort level K, which is the average value of the comfort levels detected by the illuminance sensors 3, 3... To be within a preset target range (target comfort range) by repeating the control. 4, the control device 4 calculates the average comfort level K based on the comfort levels detected by the illuminance sensors 3, 3... Multiple average comfort levels K calculated by The weighted average value of the input voltage is calculated based on the weighting factor w determined based on each average comfort level K, and the input in the next lighting control is calculated based on the weighted average value of the input voltage. The voltage is calculated.

  By configuring in this way, even if the positional relationship between the plurality of lighting fixtures 2... And the illuminance sensors 3. It is possible to appropriately control the light intensity of each of the lighting fixtures 2... So that the comfort level is improved. Therefore, for example, even when the illuminance sensors 3, 3,... Move (for example, when the illuminance sensors 3, 3,. It is possible to appropriately control the luminous intensity of the instruments 2.

  The control device 4 is characterized in that a value in the vicinity of the internal dividing point between the weighted average value of the input voltage and the input voltage in the previous lighting control is used as the input voltage in the next lighting control. It is.

  With this configuration, if the position of the internal dividing point is adjusted (closer to the previous input voltage side), the light intensity of each of the lighting fixtures 2. Can be prevented. Therefore, it is possible to suppress a sense of discomfort or discomfort given to a person in the room 10 by lighting control.

  Moreover, the control apparatus 4 guide | induces the input voltage in the said next lighting control in the direction where the luminous intensity of each lighting fixture 2 * 2 ... becomes low, so that the average comfort K in the last lighting control is high. It is what.

  By comprising in this way, in lighting control, energy saving can be achieved by preventing that the luminous intensity of each lighting fixture 2 * 2 ... becomes higher than necessary.

  In addition, the control device 4 is characterized in that the biological fluctuation theory is taken in when calculating the input voltage in the next illumination control.

  By configuring in this way, even if the positional relationship between the plurality of lighting fixtures 2... And the illuminance sensors 3. It is possible to appropriately and easily control the luminous intensity of each of the lighting fixtures 2... So that the comfort level is improved.

  In addition, the lighting control method according to the present embodiment includes a plurality of lighting fixtures 2... Capable of adjusting light intensity, and a plurality of illuminance sensors 3. ) And the input voltage for adjusting the luminous intensity of each lighting fixture 2..., And the luminous intensity of each lighting fixture 2. Illumination that causes the average comfort level K, which is the average comfort level detected by the illuminance sensors 3, 3... To be within a preset target range (target comfort range) by repeating the lighting control. It is a control method, and is calculated by the step of calculating the average comfort level K based on the comfort level detected by each of the illuminance sensors 3, 3. Multiple average comfort levels K and each average comfort level A step of calculating a weighted average value of the input voltage based on the weighting factor w determined based on K (step S104 in FIG. 2), and a step based on the weighted average value of the input voltage And a step of calculating an input voltage in the illumination control (step S104 in FIG. 2).

  By configuring in this way, even if the positional relationship between the plurality of lighting fixtures 2... And the illuminance sensors 3. It is possible to appropriately control the light intensity of each of the lighting fixtures 2... So that the comfort level is improved.

  In the lighting control method according to the present embodiment, a value in the vicinity of the internal dividing point between the weighted average value of the input voltage and the input voltage in the previous lighting control is used as the input voltage in the next lighting control. It is characterized by.

  With this configuration, if the position of the internal dividing point is adjusted (closer to the previous input voltage side), the light intensity of each of the lighting fixtures 2. Can be prevented. Therefore, it is possible to suppress a sense of discomfort or discomfort given to a person in the room 10 by lighting control.

  Further, in the lighting control method according to the present embodiment, the higher the average comfort level K in the previous lighting control, the lower the luminous intensity of each lighting fixture 2. It is characterized by guiding.

  By comprising in this way, in lighting control, energy saving can be achieved by preventing that the luminous intensity of each lighting fixture 2 * 2 ... becomes higher than necessary.

  In addition, the illumination control method according to the present embodiment is characterized in that the biological fluctuation theory is introduced when calculating the input voltage in the next illumination control.

  By configuring in this way, even if the positional relationship between the plurality of lighting fixtures 2... And the illuminance sensors 3. It is possible to appropriately and easily control the luminous intensity of each of the lighting fixtures 2... So that the comfort level is improved.

Although the illumination control system 1 and the illumination control method according to the present embodiment are applied to the room 10 that forms a substantially rectangular parallelepiped space, the scope of application of the present invention is not limited thereto, and other The present invention can be widely applied to a room having a shape, a veranda, and a tent installed outdoors.
In addition, the lighting fixtures 2, 2... According to the present embodiment are suspended from the ceiling of the room 10. However, the lighting fixture according to the present invention is not limited to this, and for example, the side wall of the room 10. It may be mounted on the floor or placed on the floor or table of the room 10.
In the present embodiment, the lighting in the room 10 is controlled using only the first lighting device 2a and the second lighting device 2b, and the first and second illuminance sensors 3a and 3b for the sake of simplicity. However, the present invention is not limited to this, and lighting control is performed using three or more lighting fixtures 2... 3 and three or more illuminance sensors 3. You can also.
In addition, the lighting fixtures 2, 2,... And the illuminance sensors 3, 3... According to the present embodiment are arranged as shown in FIG. Can be placed in position.
In addition, the comfort level detection means (in this embodiment, the illuminance sensors 3, 3...) According to the present invention is for detecting the comfort level of a person in the room 10. For example, it may be attached (possessed) to each person in the room 10. By configuring in this way, the comfort level detection means moves together with each person, so that the comfort level of each person in the room 10 can be accurately detected.
Further, the values of the weighting coefficient w and the internal fraction η in the present embodiment are examples, and the values can be arbitrarily set.

  In addition, the comfort levels k1 and k2 according to the present embodiment are calculated based on the illuminance detected by the illuminance sensor 3 (the first illuminance sensor 3a and the second illuminance sensor 3b). It is not limited. That is, the comfort level only needs to indicate the degree of pleasure / discomfort that a person feels from the surrounding environment, and any parameter may be used as a basis for calculating the comfort level. For example, the body temperature, heart rate, blood pressure, sweat rate, facial expression, behavior, etc. of a person in the room may be detected (observed), and the comfort level may be calculated based on the detected temperature.

For example, as a method of calculating the comfort level from the expression behavior of a person such as a change in facial expression or behavior, there are methods as described below.
First, the illuminance estimated from the lighting pattern of the illumination and the luminance data of the window surface estimated from the weather and time are input to the control device in advance.
Next, when some expression behavior occurs (for example, the expression becomes steep), the data of the expression behavior, the illuminance estimated from the lighting pattern of the lighting after the expression behavior, weather and time, etc. Is input to the control device.
From these input data, a Bayesian network is used to estimate the current unpleasant probability of this person, and this is set as the comfort level.

  In the above embodiment, the weighted average value of the input voltage is calculated from the past input voltage and the weighting coefficient in step S104 of FIG. 2, but the past average is calculated when calculating the weighted average value. It can also be configured to reduce comfort. This will be specifically described below.

For example, in step S104 when t = 2, the average comfort K of the past input voltage xi (1) (when t = 1) used in calculating the input voltage xi (2) is K = 0.6. Suppose.
In this case, instead of calculating the next input voltage xi (2) using the average comfort level K = 0.6 of the input voltage xi (1) as it is, the average comfort level K = of the input voltage xi (1). A value obtained by multiplying 0.6 by a predetermined coefficient less than 1 (hereinafter simply referred to as “forgetting coefficient”) is defined as the past average comfort K used when calculating the input voltage xi (2). If the forgetting factor is 0.9, for example, the past average comfort level K = 0.6 × 0.9 = 0.54 used when calculating the input voltage xi (2).

  Further, in step S104 in the case of t = 3, the average comfort K of the past input voltage xi (1) (at t = 1) used when calculating the input voltage xi (3) is further set as the forgetting factor. Is used, that is, the average comfort level K = 0.54 × 0.9 = 0.49.

  As described above, when the average comfort level K is reduced by multiplying the past average comfort level K by the forgetting factor as the process of step S104 is repeated, the old data is updated when the weighted average value of the input voltage is calculated. It is possible to induce the weighting factor to decrease. This reduces the influence of old data, which may have changed comfort levels due to changes in the surrounding environment, when determining the next input voltage. It is possible to control the luminous intensity of each of the lighting fixtures 2... So as to improve.

  In said 1st embodiment, although the mode (illumination control method) of the illumination control by the illumination control system 1 using the biological fluctuation theory (step S104 of FIG. 2) was demonstrated, below, as 2nd embodiment, A state of control (illumination control method) using SA (Simulated Annealing) instead of the biological fluctuation theory will be described with reference to FIGS. 9 and 10.

  For convenience of explanation, it is assumed that the control device 4 performs the processing from step S110 to step S116 in FIG. 9 (or from step S110 to step S115, and step S117 and step S118) at least once. In this case, the processing in step S110 is the same as the processing in step S100 of FIG. 2 described above (determining initial values such as the input voltage x1 of the first lighting fixture 2a and the input voltage x2 of the second lighting fixture 2b). Therefore, the description is omitted.

In step S111 of FIG. 9, the control device 4 applies the input voltage x1 · x2 determined in step S116 (or step S117) described later to the first lighting fixture 2a and the second lighting fixture 2b, respectively. The light intensity of the lighting fixture 2a and the second lighting fixture 2b is adjusted.
After performing the above processing, the control device 4 proceeds to step S112.

In step S112, the control device 4 calculates an average comfort level K.
That is, based on the difference between the illuminance detected by the first illuminance sensor 3a and the second illuminance sensor 3b and the target (comfort) illuminance and the map (see FIG. 4), the comfort level at the position where each illuminance sensor 3 is arranged. Are calculated, and an average comfort level K that is an average value of the comfort levels is calculated.

  In the present embodiment, it is assumed that the average comfort level K = 0.2 calculated in step S112 this time (see point LP in FIG. 10).

  After performing the process of step S112, the control device 4 proceeds to step S113.

In step S113, the control device 4 determines whether or not the average comfort level K calculated in step S112 is within the target comfort range.
When it is determined that the average comfort level K is within the target comfort range, the control device 4 ends (or temporarily stops) this control.
When determining that the average comfort level K is not within the target comfort range, the control device 4 proceeds to step S114.

  In the present embodiment, the target comfort range is K> 0.8. Since the average comfort level K calculated in step S112 is 0.2, the average comfort level K is not within the target comfort range. For this reason, the control apparatus 4 transfers to step S114.

  In step S114, the control device 4 determines values of the previous comfort level LK and the stored comfort level SK.

  As the previous comfort level LK, the value of the average comfort level K calculated in the immediately preceding step S112 is used (assigned). That is, in the current step S114, a value of 0.2 is substituted for the previous comfort level LK. In the following, the input voltage applied to each lighting fixture (first lighting fixture 2a and second lighting fixture 2b) when the previous comfort level LK is calculated is referred to as the previous input voltage (point LP in FIG. 10). Reference).

As the stored comfort level SK, the highest value of the average comfort level K calculated (preceded) before the previous step S112 is used (assigned). In the following, the input voltage applied to each lighting device (first lighting device 2a and second lighting device 2b) when the stored comfort level SK is calculated is referred to as the stored input voltage (point SP in FIG. 10). Reference).
After performing the process of step S114, the control device 4 proceeds to step S115.

In step S115, the control device 4 determines whether or not a predetermined condition is satisfied.
Hereinafter, the process of step S115 will be described in detail.

The following two conditions are set as the predetermined conditions in step S115.
The first condition is assumed to be satisfied when the storage comfort level SK <the previous comfort level LK. That is, when the value of the average comfort level K calculated in the immediately preceding step S112 is larger than the highest value among the average comfort levels K calculated in the past, it is assumed that the predetermined condition is satisfied.

  The second condition is assumed to be satisfied by the probability P when the stored comfort level SK ≧ the previous comfort level LK. That is, even if the first condition is not satisfied, the condition is set to be satisfied with a probability of P (%). As a specific example of the probability P, for example, P = exp ((LK−SK) / T) is set. Here, T is a positive number that decreases as time passes.

When the control device 4 determines in step S115 that neither of the two conditions is satisfied, the control device 4 proceeds to step S116.
When it is determined in step S115 that one of the two conditions is satisfied, the control device 4 proceeds to step S117.

In step S116, the control device 4 determines the next input voltage from the predetermined range (within the two-dot chain line in FIG. 10A) based on the stored input voltage (see the point SP in FIG. 10). x1 and x2 are determined at random.
After performing the above processing, the control device 4 proceeds to step S111.

On the other hand, in step S117, the control device 4 performs the following operation from a predetermined range based on the previous input voltage (see point LP in FIG. 10) (within the range indicated by a two-dot chain line in FIG. 10B). The input voltages x1 and x2 are determined at random.
After performing the above processing, the control device 4 proceeds to step S118.

In step S118, the control device 4 changes the value of the stored input voltage to the value of the previous input voltage. That is, the previous input voltage value is used (substitute) as the value of the stored input voltage.
After performing the above processing, the control device 4 proceeds to step S111.

  In this way, the control device 4 performs steps S110 to S116 in FIG. 9 (or steps S110 to S115, and so on) until the average comfort level K falls within a preset target range (target comfort range). Steps S117 and S118) are repeated. In this way, the control device 4 can control the comfort level detected by each illuminance sensor (the first illuminance sensor 3a and the second illuminance sensor 3b) to be high.

  In the first embodiment, the control device 4 performs control so that the “average comfort level K” is within the target comfort range (see step S103 in FIG. 2). In the following, the case where the “comfort level ki” is controlled to be within the target comfort range will be described with reference to FIG.

  In addition, when the process (step) in 3rd embodiment is substantially the same as the process (step) in 1st embodiment, that is described and detailed description is abbreviate | omitted.

In step S120 of FIG. 11, the control device 4 determines initial values such as the input voltage x1 of the first lighting fixture 2a and the input voltage x2 of the second lighting fixture 2b.
The process of step S120 is substantially the same as the process of step S100 (see FIG. 2) in the first embodiment.
In addition, the control apparatus 4 also determines the target comfortable range used as the target of the comfort level ki mentioned later here.
After performing the above processing, the control device 4 proceeds to step S121.

In step S121, the control device 4 applies the input voltages x1 and x2 determined in step S120 to the first lighting fixture 2a and the second lighting fixture 2b, respectively, and the luminous intensity of the first lighting fixture 2a and the second lighting fixture 2b. Adjust.
After performing the above processing, the control device 4 proceeds to step S122.

In step S122, the control device 4 determines whether or not the comfort level ki is within the target comfort range.
Hereinafter, the process of step S122 will be described in detail.

  First, the control device 4 is based on the illuminance detected by the first illuminance sensor 3a and the second illuminance sensor 3b, at the position where each illuminance sensor 3 (first illuminance sensor 3a and second illuminance sensor 3b) is arranged. Comfort levels ki (comfort levels k1 and k2) are respectively calculated.

  Specifically, the control device 4 determines the absolute value (absolute difference) between the illuminance detected by the first illuminance sensor 3 a and the second illuminance sensor 3 b and the illuminance (target illuminance) that is a preset target. ) L (lx) is calculated. The comfort levels k1 and k2 corresponding to the absolute difference L are calculated from the calculated absolute difference L and a map as shown in FIG. In the present embodiment, the comfort level k1 = 0.4 at the position where the first illuminance sensor 3a is arranged, and the comfort level k2 = 0.2 at the position where the second illuminance sensor 3b is arranged.

Next, the control device 4 determines whether or not all the calculated comfort levels ki (k1 · k2) are within the target comfort range.
When the control device 4 determines that all the comfort levels ki are within the target comfort range, the control device 4 determines that all the people in the room 10 are comfortable to some extent, and ends this control (or temporarily Stop. When this control is temporarily stopped, the control device 4 determines the average comfort level at a predetermined timing (for example, a predetermined time elapses or the position of the illuminance sensors 3 3... Changes). This control is resumed again when K is outside the target comfortable range.
When it is determined that at least one of the comfort levels ki is not within the target comfort range, the control device 4 proceeds to step S123.

  In the present embodiment, it is assumed that the target comfortable range is ki> 0.8. Since the comfort level ki calculated in step S122 is 0.4 and 0.2, none of the comfort levels ki falls within the target comfort range. For this reason, the control apparatus 4 transfers to step S123.

In step S123, the control device 4 calculates an average comfort level K.
The average comfort level K is an average value of the comfort levels k1 and k2 at the positions where the illuminance sensors 3 (the first illuminance sensor 3a and the second illuminance sensor 3b) are arranged. In the present embodiment, the average comfort level K (the average value of the comfort levels k1 and k2) = 0.3.
After performing the above processing, the control device 4 proceeds to step S124.

In step S124, the control device 4 next determines the input voltages x1 and x2 to be applied to the first lighting fixture 2a and the second lighting fixture 2b using the biological fluctuation theory.
The process of step S124 is substantially the same as the process of step S104 (see FIG. 2) in the first embodiment.
In the present embodiment, the processing from step S121 to step S124 is referred to as “illumination control”.

  After performing the process of step S124, the control device 4 proceeds to step S121 and starts illumination control (process from step S121 to step S124) again.

  As described above, the control device 4 repeatedly performs lighting control (the processing from step S121 to step S124) until the comfort level ki falls within a preset target range (ki> 0.8). In this way, the control device 4 can control the comfort level detected by each illuminance sensor (the first illuminance sensor 3a and the second illuminance sensor 3b) to be high.

  As described above, the lighting control system 1 according to the present embodiment includes a plurality of lighting fixtures 2... Capable of adjusting the light intensity, and a plurality of illuminance sensors 3. Intensity detecting means) and an input voltage for adjusting the luminous intensity of each of the lighting fixtures 2, 2... And lighting for adjusting the luminous intensity of each of the lighting fixtures 2, 2. A control device 4 that causes the comfort level detected by each of the illuminance sensors 3, 3... To be within a preset target range (target comfort range) by repeating the control. 1, the control device 4 calculates an average comfort level K based on the comfort levels detected by the illuminance sensors 3, 3..., And a plurality of average comfort levels calculated by repeated lighting control. K and the average comfort level K Calculating a weighted average value of the input voltage based on the determined weighting factor w, and calculating an input voltage in the next lighting control based on the weighted average value of the input voltage. It is a feature.

  By configuring in this way, even if the positional relationship between the plurality of lighting fixtures 2... And the illuminance sensors 3. It is possible to appropriately control the light intensity of each of the lighting fixtures 2... So that the comfort level is improved. Therefore, for example, even when the illuminance sensors 3, 3,... Move (for example, when the illuminance sensors 3, 3,. It is possible to appropriately control the luminous intensity of the instruments 2.

  In addition, the lighting control method according to the present embodiment includes a plurality of lighting fixtures 2... Capable of adjusting light intensity, and a plurality of illuminance sensors 3. ) And the input voltage for adjusting the luminous intensity of each lighting fixture 2..., And the luminous intensity of each lighting fixture 2. A lighting control method in which the degree of comfort detected by each of the illuminance sensors 3, 3... Is within a preset target range (target comfortable range) by repeating the illumination control. A step of calculating the average comfort level K based on the comfort level detected by 3.3 (step S102 in FIG. 2), a plurality of average comfort levels K calculated by repeated illumination control, Determined based on each average comfort level K A step of calculating a weighted average value of the input voltage based on the weighted coefficient w (step S104 in FIG. 2), and an input voltage in the next lighting control based on the weighted average value of the input voltage. And a step of calculating (step S104 in FIG. 2).

  By configuring in this way, even if the positional relationship between the plurality of lighting fixtures 2... And the illuminance sensors 3. It is possible to appropriately control the light intensity of each of the lighting fixtures 2... So that the comfort level is improved.

In the present embodiment, the state of illumination control (illumination control method) by the illumination control system 1 using the biological fluctuation theory (step S124 in FIG. 11) has been described, but the present invention is not limited to this. As in the second embodiment, control using SA instead of the biological fluctuation theory is also possible.
Further, similarly to the first embodiment, it is possible to reduce the past average comfort level when calculating the weighted average value using the forgetting factor.
In the present embodiment, the control is terminated only when the comfort level ki is all within the target comfort range in step S122. However, the present invention is not limited to this, and the comfort level is not limited thereto. It is also possible to adopt a configuration in which the control is terminated when a predetermined number (predetermined ratio) or more of ki is within the target comfortable range. The predetermined number (predetermined ratio) in this case can be arbitrarily set.

DESCRIPTION OF SYMBOLS 1 Lighting control system 2 Lighting fixture 2a 1st lighting fixture 2b 2nd lighting fixture 3 Illuminance sensor 3a 1st illumination intensity sensor 3b 2nd illumination intensity sensor 4 Control apparatus

Claims (6)

A plurality of lighting fixtures capable of adjusting the light intensity;
A plurality of comfort level detection means for detecting the comfort level;
The input voltage for adjusting the luminous intensity of each lighting fixture is calculated, and the lighting control for adjusting the luminous intensity of each lighting fixture based on the input voltage is repeated to detect the comfort level detecting means. A control device that causes the comfort level or the average comfort level, which is an average value of the comfort levels detected by the respective comfort level detection means, to be within a preset target range;
A lighting control system comprising:
The controller is
Each time the lighting control is performed, the average comfort level is calculated based on the comfort level detected by the comfort level detection means.
An average value of the input voltage calculated Te smell each repeated a the lighting control in the past, the input of the average comfort level was higher the lighting control of the repeated the said lighting control in the past Calculate the weighted average value, which is the average value weighted so that the weight increases with voltage ,
The value in the vicinity of the dividing point between the input voltage before Kikasane viewed mean value and the previous lighting control, characterized by an input voltage at the next lighting control,
Lighting control system. The controller is
As the average comfort level in the previous lighting control is higher, the input voltage in the next lighting control is guided in a direction in which the luminous intensity of each lighting fixture is reduced ,
The lighting control system according to claim 1. The controller is
The input voltage in the next illumination control is determined from within a predetermined noise range based on the internal dividing point ,
The lighting control system according to claim 1 or 2.   A plurality of lighting fixtures capable of adjusting the light intensity;
  A plurality of comfort level detection means for detecting the comfort level;
  Using,
  The input voltage for adjusting the luminous intensity of each lighting fixture is calculated, and the lighting control for adjusting the luminous intensity of each lighting fixture based on the input voltage is repeated to detect the comfort level detecting means. A lighting control method in which an average comfort level, which is a comfort level or an average value of comfort levels detected by the respective comfort level detection means, is within a preset target range,
  Calculating the average comfort level based on the comfort level detected by each comfort level detection means each time the lighting control is performed;
  An average value of the input voltages calculated in each of the lighting controls repeatedly performed in the past, and the input voltage in the lighting control in which the average comfort level is high among the lighting controls repeatedly performed in the past. A step of calculating a weighted average value that is an average value weighted so as to increase the weight;
  A step of setting a value in the vicinity of an internal dividing point between the weighted average value and the input voltage in the previous lighting control as an input voltage in the next lighting control;
  The lighting control method characterized by including. As the average comfort level in the previous lighting control is higher, the input voltage in the next lighting control is guided in a direction in which the luminous intensity of each lighting fixture is reduced,
The lighting control method according to claim 4 . The input voltage in the next illumination control is determined from within a predetermined noise range based on the internal dividing point,
The lighting control method according to claim 4 or 5 .

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