KR102122234B1 - Device, system and method for controling lighting - Google Patents

Abstract

The technical problem to be achieved by the present invention is to provide a lighting control device, a lighting control system and a lighting control method for providing appropriate lighting to a plurality of light emitting means disposed in a region having different illumination values with a small number of illumination sensors.
As a means for solving the above technical problem, the present invention includes a control unit for controlling the illuminance of the plurality of light emitting means based on the illuminance value measured by the illuminance sensor, wherein the control unit is relative to the illuminance sensor and the light emitting means It provides a lighting control device characterized in that for controlling the illuminance of the light emitting means according to the position.
The above-described lighting control apparatus, lighting control system and lighting control method according to the present invention have an effect capable of providing appropriate lighting to a plurality of light emitting means arranged in a region having different illumination values with a small number of illumination sensors.

Description

Lighting control device, lighting control system and lighting control method {DEVICE, SYSTEM AND METHOD FOR CONTROLING LIGHTING}

The present invention relates to a lighting control device, a lighting control system and a lighting control method, and more particularly, to an apparatus, system and method for controlling lighting in conjunction with an illuminance sensor.

In general, the lighting device provides light by using light emitting means such as an incandescent light bulb, a fluorescent lamp, and a light emitting diode (LED) as a light source. In recent years, such a lighting device uses an LED (light emitting diode) having a high efficiency of converting electrical energy into light energy, and having various advantages such as red, yellow, green, blue, and white as a light source.

Such lighting devices are used in various fields such as homes, offices, factories, etc., and recently, when operating lighting devices, energy and cost are reduced, and the lighting devices provide appropriate brightness of light, so as not to cause eye fatigue to a person. Various techniques have been proposed to do this.

For example, by interlocking the illumination sensor and the illumination, the ambient light is detected through the illumination sensor, and the brightness of the light is controlled according to the illumination value measured through the illumination sensor, so that the lighting device is suitable for the environment. Lighting can be provided.

1 is a view showing the configuration of a conventional lighting control device.

As shown in FIG. 1, the conventional lighting control device includes a control unit 10, an illuminance sensor 20 and at least one light emitting means 31 to 43, and the control unit 10 is controlled by an illuminance sensor 20. Using the measured illuminance value, the illuminance of the light emitting means 31 to 43 is controlled according to the measured illuminance value.

However, when controlling the illuminance of the plurality of light emitting means 31 to 43 based on the illuminance sensor 20, the position of the light emitting means 31 to 43 in the lighting providing area is not taken into account, so that an external light source is used. When the control unit 10 performs batch control of the plurality of light emitting means 31 to 43 irrespective of the effect of the light intensity, measured by the light intensity sensor 20 located in the dark area with respect to the light emitting means located in the high light intensity area If it is brightly controlled based on the illuminance, power consumption can be wasted and at the same time it can give a person a feeling of eye fatigue due to glare, and is measured by the illuminance sensor 20 located in the bright area for the light emitting means located in the low illuminance area. If it is darkly controlled based on the illuminance, there is a problem in that it is impossible to provide enough light to recognize a person.

Therefore, the necessary skills to solve these problems are urgently required.

The technical problem to be achieved by the present invention is to solve the conventional problems as described above, a lighting control device for providing a suitable light to a plurality of light emitting means disposed in a region having different illumination values with a small number of illumination sensors, It is to provide a lighting control system and a lighting control method.

As a means for solving the above technical problem, the present invention includes a control unit for controlling the illuminance of the plurality of light emitting means based on the illuminance value measured by the illuminance sensor, wherein the control unit is relative to the illuminance sensor and the light emitting means It provides a lighting control device characterized in that for controlling the illuminance of the light emitting means according to the position.

At this time, the control unit may group the light emitting means into at least one group according to the installed position, so as to control the illuminance of the light emitting means for each group.

In addition, the control unit may set a target illuminance value based on the direction and distance in which the light emitting means is located based on the position of the illuminance sensor with respect to the light emitting means, and the control unit may measure the illuminance measured by the one illuminance sensor. Lighting control device characterized in that for controlling the illuminance of the light emitting means so that the value is a predetermined target illuminance value.

Preferably, the control unit may set the target illumination value according to the divided time zone.

Accordingly, the storage unit further includes a storage unit configured to store the illuminance table in which the target illuminance value is set for each time period. The controller may control the light emitting means according to the target illuminance value using the illuminance table.

According to another embodiment, further comprising a communication unit for receiving the sunrise mall time information from the meteorological station server, the control unit, to control the light emitting means according to the time zone divided according to the sunrise mall time received from the meteorological agency server Can be.

According to another embodiment, the illuminance sensor is arranged in an area where an external light source is incident among areas in which the light emitting means provides illumination, and the illuminance sensor measures the illuminance of the external light source, and the controller controls the illuminance sensor By using, it is possible to control the light emitting means according to a time zone divided based on the sunrise mall time determined based on the illuminance value measured by the illuminance sensor. At this time, the control unit, the illuminance value measured at the time of the smallest change in illuminance of the day through the illuminance sensor as a base illuminance value, and compares the illuminance value measured by the illuminance sensor and the base illuminance value, the You can judge the time of sunrise mall. Specifically, when the average value of a predetermined number of illuminance values measured by the illuminance sensor is greater than or equal to a predetermined size than the base illuminance value, the controller determines sunrise time when the average value increases over time or , When the average value decreases over time, it is possible to determine the sunset time.

Alternatively, the controller may calculate the amount of change in the illuminance for a predetermined time based on the illuminance value measured by the illuminance sensor, and determine the sunrise time by using the amount of change in illuminance.

In addition, the control unit may control the light emitting means by any one or a combination of proportional control, differential control, and integral control.

On the other hand, the present invention includes an illuminance sensor, a plurality of light emitting means and a control unit that controls the illuminance of the light emitting means based on the illuminance value measured by the illuminance sensor, wherein the control unit is relative to the illuminance sensor and the light emitting means. It provides a lighting control system characterized in that to control the illuminance of the light emitting means according to the position.

In addition, the present invention includes the step of controlling the illuminance of the light emitting means based on the illuminance value measured by the illuminance sensor, wherein the step of controlling the illuminance of the light emitting means depends on the relative position between the illuminance sensor and the light emitting means. It provides a lighting control method characterized in that to control the illuminance of the light emitting means. According to an embodiment, the step of controlling the illuminance of the light emitting means may group the light emitting means into at least one group according to an installed position to control the illuminance of the light emitting means for each group.

At this time, the step of controlling the illuminance of the light emitting means may set a target illuminance value based on the direction and distance in which the light emitting means is located based on the position of the illuminance sensor with respect to the light emitting means.

In addition, the step of controlling the illuminance of the light emitting means may include controlling the illuminance of the light emitting means so that the illuminance value measured by the one illuminance sensor is a predetermined target illuminance value.

Preferably, the step of controlling the illuminance of the light emitting means may further include setting the target illuminance value according to the divided time zone.

According to an embodiment, the step of controlling the illuminance of the light emitting means further includes reading an illuminance table in which the target illuminance value is set over time, wherein the illuminance table is used to determine the illuminance according to the target illuminance value. The illuminance of the light emitting means can be controlled.

According to another embodiment, the step of controlling the illuminance of the light emitting means may further include determining a time of sunrise and determining a time zone based on the time of sunrise.

At this time, the step of controlling the illuminance of the light emitting means may further include receiving sunrise sunrise time information from a meteorological agency server, and setting the target illuminance value may include using the received sunrise sunset time information, The target illuminance value may be set according to a time zone divided according to the sunrise mall time.

Alternatively, the step of controlling the illuminance of the light emitting means may further include measuring the illuminance of the external light source using an illuminance sensor, and the setting of the target illuminance value may include illuminance measured by the illuminance sensor. The target illuminance value may be set according to a time zone divided based on the sunrise mall time determined based on the value. At this time, the step of measuring the illuminance value at the time of the smallest change in illuminance of the day through the illuminance sensor, and further comprising calculating a base illuminance value, the step of distinguishing the time zone, the illuminance measured by the illuminance sensor Comparing the value with the base illuminance value, it is possible to determine the sunrise time, and in the step of distinguishing the time zone, the average value of a certain number of illuminance values measured by the illuminance sensor is greater than the base illuminance. When the average value increases over time, the sunrise time may be determined, or when the average value decreases over time, the sunset time may be determined.

In addition, the step of classifying the time zone may calculate an amount of illumination change for a predetermined time based on the illuminance value measured by the illuminance sensor, and determine the sunrise time at the sunrise using the amount of illumination change.

On the other hand, in the step of controlling the illuminance of the light emitting means to be the target illuminance value, the light emitting means may be controlled by any one or a combination of proportional control, differential control and integral control.

On the other hand, the present invention provides a computer-readable recording medium recording a computer program for executing the lighting control method.

The above-described lighting control apparatus, lighting control system and lighting control method according to the present invention have an effect capable of providing appropriate lighting to a plurality of light emitting means arranged in a region having different illumination values with a small number of illumination sensors. Therefore, by appropriately providing the illuminance of the light emitting means in the illumination providing area, it is possible to solve the problem of causing eye fatigue and/or wasting energy.

In addition, it is possible to control the lighting for each customized area by providing a target illumination value by calculating the exact sunrise time for each location where the illuminance sensor is installed, and classifying the time zone based on this.

In addition, it is possible to prevent erroneous control when controlling the illuminance of the light emitting means by dividing each time zone in consideration of the effect of the instantaneous external environment change.

1 is a view showing the configuration of a conventional lighting control device.
2 is a view showing the configuration of a lighting control system according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating an example of a floor plan of a building in which an illuminance sensor of a lighting control system according to an embodiment of the present invention is disposed.
4 is a graph showing illuminance values of lights controlled according to the present invention.
5 is a view showing the illuminance value measured by the illuminance sensor over time.
FIG. 6 is a graph showing the indoor illuminance value and the illuminance value of the lighting controlled by the lighting control device according to an embodiment of the present invention.
FIG. 7 is a graph showing indoor illumination values and illumination illumination values controlled by a lighting control device according to another embodiment of the present invention.
8 is a flowchart illustrating a lighting control method according to an embodiment of the present invention in a step-by-step flowchart.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be configured in many different forms and is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and similar parts will be described with reference to like parts throughout the specification.

Hereinafter, with reference to the accompanying drawings, a specific technical content to be carried out in the present invention will be described in detail and clearly.

Example 1

2 is a view showing the configuration of a lighting control system according to an embodiment of the present invention, Figure 3 is a view showing an example of a building floor plan where the illumination sensor of the lighting control system according to an embodiment of the present invention .

As shown in FIG. 2, the lighting control system 100 according to the present invention includes an illuminance sensor 20, light emitting means 31 to 43 and a control unit 10.

The illuminance sensor 20 is a means for sensing the light incident from an arbitrary light source in the vicinity and measuring the illuminance. The illuminance sensor 20 is installed in an area that provides illumination by the light emitting means 31 to 43 (hereinafter abbreviated as "lighting area").

At least one of the illuminance sensors 20 may be installed in the lighting providing area, but in terms of the cost of the lighting control device 100 or the installation cost in the lighting providing area, the number may be less than the number of light emitting means 31 to 43. It is desirable to have only one.

At this time, the illuminance sensor 20 may be disposed in an arbitrary region regardless of the degree of influence by an external light source in the illumination providing area, but preferably, as illustrated in FIG. 3, the illuminance of the external light source 1 is measured. The external light source 1 in the illumination providing area may be disposed at a position close to the window W where it is incident. Details of this will be described later.

The light emitting means 31 to 43 are electrically connected to the control unit 10 to emit light through a light source such as an incandescent light bulb, a fluorescent lamp, and a light emitting diode (LED). Such a light emitting means has a high efficiency of converting electrical energy into light energy in recent years, and it is preferable to mainly use an LED (light emitting diode) that has various advantages such as red, yellow, green, blue, and white as a light source. .

As shown in Figs. 2 and 3, a plurality of such light emitting means 31 to 43 are provided in the lighting providing area. At this time, the plurality of light emitting means (31 to 43) may be arbitrarily arranged regardless of the amount of light incident from the external light source or irrespective of the illuminance in the illumination providing area.

The control unit 10 controls the illuminance of the plurality of light emitting means 31 to 43 based on the measured illuminance value using the illuminance value measured by the illuminance sensor 20.

For example, the control unit 10 controls the power or dimming of the light emitting means 31 to 43 according to the illuminance value measured by the illuminance sensor 20, but the illuminance control is measured by the illuminance sensor 20 It is possible to control to increase or decrease the illuminance of the light emitting means 31 to 43 so that the illuminance value to be reached a preset target illuminance value. Here, the target illuminance value may be a specific illuminance value (for example, 1,000 Lux), or may be a certain range of target illuminance upper and lower limits rather than specific values to prevent frequent illuminance control for the light emitting means 31 to 43.

At this time, the control unit 10 controls the illuminance of the light emitting means 31 to 43 according to the relative position between the illuminance sensor 20 and the light emitting means 31 to 43.

That is, when the position where the light emitting means 31 to 43 are disposed based on the position of the illuminance sensor 20 in the lighting providing area is a dark area in which the amount of light incident from an external light source is less, a target set for user input, etc. A target illuminance value as high as a predetermined value is set as a reference value (referred to as "reference target illuminance value" in this specification), and conversely, a position where the light emitting means 31 to 43 are arranged is incident from an external light source. When the amount of light is a brighter area, the target illuminance value is set by a predetermined value lower than the reference target illuminance value, so that the control unit 10 reaches the illuminance of the light emitting means 31 to 43 to the target illuminance value set in each. Control the illuminance.

At this time, the relative position between the illuminance sensor 20 and the light emitting means 31 to 43 is based on the direction and distance of each of the light emitting means 31 to 43 based on the position of the illuminance sensor 20, and each light emitting means The displacement amount based on the reference target roughness value for (31 to 43) may be preset by user input or the like.

Meanwhile, the control unit 10 may set individual target illuminance values for the light emitting means 31 to 43, but as shown in FIG. 3, the light emitting means 31 to 43 disposed in the light providing area are installed. Accordingly, by grouping into at least one group, the illuminance of the light emitting means 31 to 43 can be controlled for each group. At this time, one group may include at least one light emitting means (31 to 43).

As a specific example, as illustrated in FIG. 3, six light emitting means 31 to 43 are divided into three groups in the lighting providing area, and each group is provided in each of the three areas Z1 to Z3 of the lighting providing area. Suppose it is deployed.

In this way, the grouping of the plurality of light emitting means 31 to 43 may be arbitrarily determined by the user, but as illustrated in FIG. 3, according to the position in which the light emitting means 31 to 43 are disposed in the indoor lighting providing area It is preferred to be grouped.

For example, among the surfaces of the indoor area, the light is incident from the external light source 1 such as sunlight, that is, with respect to the position of the illuminance sensor 20 based on one surface of the indoor area where the window W is disposed. They can be grouped according to their relative distances. The first group of light emitting means 31 to 43 located in the Z1 area including the illuminance sensor 20 is a predetermined range from a certain distance to the illuminance sensor 20 based on the surface where the window W is located in the illumination providing area It may include at least one light emitting means (31, 41) disposed in, and, in addition, the second group located in the Z2 area and the third group located in the Z3 area is a certain distance in the inner direction than the position of the illumination sensor 20 It includes at least one light emitting means (32, 33, 42, 43) disposed within, the light emitting means (32, 42) of the area close to each distance as a second group, the light emitting means (33, 43) of the distant area You can do it as a third group.

Since the side in which the window W is disposed in the indoor area is greatly influenced by the external light source 1, it is relatively brighter than the inside of the indoor area, and the partial areas of Z1 to Z3 divided by the lighting provision area are Z1, Z2 and Z3 In this order, the amount of light incident from the external light source 1 through the window W is large and bright.

At this time, the first group formed by the light emitting means 31 and 41 disposed in the Z1 region includes the illuminance sensor 20, so that the control unit 10 determines the illuminance value measured by the illuminance sensor 20 as the reference target illuminance. The illuminance of the light emitting means 31 and 41 in the first group can be controlled to be a value, and the second group of the light emitting means 32 and 42 disposed in the Z2 region is located at the position of the illuminance sensor 20. Compared to the reference target illuminance value, the illuminance of the second group of light emitting means 32 and 42 can be controlled to be set to a target illuminance value, which is disposed in a relatively darker area than the reference target illuminance value. In addition, the third group formed by the light emitting means 33 and 43 arranged in the Z3 area is disposed in a region darker than the position of the Z2 region, so that the second displacement amount is greater than the reference target illuminance value (greater than the first displacement amount). It is possible to control the illuminance of the third group of light emitting means 33 and 43 so as to set the target illuminance value as high as the value). As such, the controller 10 may appropriately control the illuminance according to the position of the light emitting means for each group for the first group of the Z1 area to the third group of the Z3 area.

At this time, a specific point for calculating the direction and distance from the illuminance sensor 20 is any one light emitting means belonging to a group of light emitting means 31 to 43 or the direction and distance calculated for each light emitting means belonging to a group It can be the average point for or a differently specified point. In this way, the light emitting means for each group 31 to 43 are set differently based on the reference target illuminance value according to the relative position according to the direction and distance from the illuminance sensor 20, and each light emitting means 31 to 31 in the illumination providing area 43) It is preferable that they are collectively controlled according to the set target illumination value.

On the other hand, when the control unit 10 controls the illuminance of the light emitting means 31 to 43 individually or by group, when the light emitting means 31 to 43 set a target illumination value higher or lower than the reference target illumination value, specific Of course, it can be set by adding or subtracting by the amount of displacement, or by multiplying or dividing a specific weight.

As described above, the problem of causing eye fatigue and/or wasting energy that may occur when collectively controlling the illuminance of the light emitting means 31 to 43 in the illumination providing area without considering the relative position with the illuminance sensor 20 is a lighting providing area In can be solved by controlling the illuminance individually or in groups for the light emitting means according to the relative position of the light emitting means based on the position of the illuminance sensor.

2nd Example

The lighting control device according to an embodiment of the present invention, as described above, the control unit 10 to conform to the target illumination value set according to the relative position with the light emitting means (31 to 43) on the basis of the illuminance sensor 20 It is preferable to control the illuminance of the light emitting means 31 to 43, but to control the illuminance of the light emitting means 31 to 43 by classifying the time zones and setting target illumination values according to the divided time zones. This is because a change in illuminance occurs by the external light source 1 for each time zone.

4 is a graph showing illuminance values of lights controlled according to the present invention. As illustrated in FIG. 4, the target illumination value is set to 1,000 Lux (each light emitting means 31 to 43) or each group of light emitting means 31 to 43 using the illuminance value measured by the illuminance sensor 20. The target illuminance value may vary, but the brightness of the light emitting means 31 to 43 is controlled based on the target illuminance value 1,000 Lux for the sake of easy description below. By setting the target illuminance value dynamically according to the changing environment by 1), the control unit 10 expands the control width of the light emitting means 31 to 43 of the control unit 10, so that the control unit 10 more appropriate lighting according to the environment While controlling to be provided, it is possible to reduce the power consumption for the light emitting means (31 to 43).

As a specific example, the target environment may be set by lowering the target illuminance value in the daytime when the surrounding environment is brighter than in the dark night or dawn, and the control unit 10 may control the light emitting means 31 to 43 based on this.

In the dark evening, night, and dawn, the illuminance value measured by the external light source 1 in the illuminance sensor 20 is about 100 Lux at the lowest and around 6,000 Lux at the brightest day (L1). Therefore, the control unit 10 dynamically sets the target illuminance value according to time, so that the brightness of the light emitting means 31 to 43 is controlled to be 60% in order to maintain (S) the target illuminance value of 1,000 Lux or less during the day. do. As a result of this, the brightness of the area where the light is provided by the light emitting means 31 to 43 controlled by the control unit 10 is maintained at 1,000 Lux in the evening, night and dawn, but 4,000 Lux (G1) in bright daylight. It is lowered to 2,000 Lux (G2), and it can be seen that it is controlled to provide appropriate lighting to the room according to the external environment.

In this way, when controlling the light emitting means (31 to 43) by the lighting control device according to an embodiment of the present invention, by setting the target illuminance value differently according to the divided time zone, the illuminance according to a certain target illuminance value without distinguishing the time zone The brightness of the area where the illumination is provided is 80% (L2) and 4,000 Lux (G1), 60% (L3) and 2,000 Lux (G2) (see FIG. 4), respectively, than the control case, the light emitting means 31 to The power consumption of 43) is reduced, and the illuminance of the light emitting means 31 to 43 can be controlled to be closer to the preset target illuminance value.

Third Example

As described above, the control unit 10 according to an embodiment of the present invention sets a target illuminance value according to the divided time zone, and controls the light emitting means 31 to 43 based on this, but for distinguishing the time zone In order to set a standard, the control unit 10 may include a storage unit (not shown) according to an embodiment.

The storage unit (not shown) may store an illuminance table in which a target illuminance value is set according to time, and the control unit 10 reads the illuminance table from the storage unit (not shown) and uses the read illuminance table to time By setting the corresponding target illuminance value, the light emitting means 31 to 43 can be controlled according to the target illuminance value.

At this time, the target illuminance value stored in the illuminance table is set differently with time, as indicated by reference numeral S in FIG. 4.

At this time, since the illuminance value L1 by the external light source shown in FIG. 3 has a different value for each season or month, the illuminance table stored in the storage unit (not shown) stores the target illuminance value according to time by season or month It is desirable to be.

Meanwhile, according to an embodiment of the present invention, the target illuminance value is set according to the time zone, but at this time, the reference of the divided time zone may be the sunrise time.

At this time, the sunrise mall time is received sunrise sunrise time information from the meteorological agency server (not shown) through the communication unit 14 included in the control unit 10, extract the sunrise mall time from the received sunrise mall time information, and By setting the target illuminance value according to the time zone divided by the reference, the light emitting means 31 to 43 can be controlled based on this.

At this time, the Meteorological Administration server (not shown) provides sunrise mall time by region, but the area where the light emitting means 31 to 43 provide lighting, for example, in the case of a store, the store's height, location, direction, obstacles located in the vicinity Even if the area for the sunrise mall time provided by the Meteorological Agency server is the same due to environmental factors such as, the sunrise mall time may differ for each store.

Accordingly, the control unit 10 measures the illuminance of the external light source 1 through the illuminance sensor 20, and the time zone is divided based on the sunrise sunset time determined based on the illuminance value measured by the illuminance sensor 20. It is preferable to control the light emitting means (31 to 43) according to.

At this time, the illuminance sensor 20 measures the illuminance of light incident from an external light source, such as sunlight outside the window, to the light incident from an internal light source (e.g., light emitting means 31 to 43) installed inside the illumination providing area. It is preferable to be installed in the vicinity of the window (W) in the interior of the lighting providing area to reduce the influence on the, and increase the influence on the light incident from an external light source, such as sunlight for determining the sunrise time. Therefore, it is preferable that the illuminance sensor 20 is arrange|positioned in Z3 area|region close to the window W.

When the control unit 10 determines sunrise time using the illuminance value measured by the illuminance sensor 20, the illuminance value measured by the illuminance sensor 20 is greater than a preset first illuminance value. The sunrise time may be determined within a range, or a sunset time may be determined within a predetermined time range based on a case less than a preset second illuminance value. Here, the first and second illuminance values may be set to arbitrary illuminance values, but as described above, since the illumination provision area is not the same as the illumination provision area of another region and the illuminance value measured by an external light source, illumination is provided. It is preferable to calculate a base illuminance value as a reference for each region, and to determine the first and second illuminance values with a base illuminance value and a value within a predetermined size or a predetermined range.

In this case, the base illuminance value may be the illuminance value measured in a time period during which the change in illuminance is least during the day.

5 is a view showing the illuminance value measured by the illuminance sensor over time. As shown in FIG. 5, there is little change in the illuminance value from about 18:00 to about 7 o'clock, that is, after sunset.

In particular, the season is not affected by the change of season from 2 am to 3 am, which is the R1 time zone, and the illuminance value hardly changes during the R1 time zone. Therefore, the control unit 10 sets the basis of the at least one illuminance value or the average of at least two illuminance values measured in the R1 time period, and the new illuminance value currently measured through the illuminance sensor 20 is the base illuminance. Compared to the value, it is possible to determine the time of sunrise mall.

At this time, in order to calculate the base illuminance value, it is preferable that the control unit 10 calculates a target illuminance value by measuring and averaging a plurality of illuminance values in the R1 time zone, and more preferably, the illuminance averaged in the R1 time zone of the day. The value calculation may be repeated for several days, and a plurality of average illuminance values repeatedly calculated may be re-averaged to calculate a base illuminance value. This is because the illuminance value may change instantaneously due to various noises generated from inside and outside, even if the illuminance value measured by the illuminance sensor 20 hardly changes with time.

After calculating the base illuminance value, the sunrise mole time is determined by comparing the base illuminance value with the newly measured illuminance value through the illuminance sensor 20, but when the newly measured illuminance value is greater than or equal to the target illuminance value, sunrise It can be determined by the time, and when the newly measured illuminance value after the sunrise time has elapsed from the target illuminance value, it can be determined by the sunset time.

When controlling the light emitting means 31 to 43, the control unit 10 determines the sunrise time by using the illuminance value measured by the illuminance sensor 20, thereby providing illumination through the light emitting means 31 to 43 Regardless of the area, location, and direction of the area, the sunrise mall time can be determined more accurately than the sunrise mall time received from the meteorological agency server. By classifying the time zones based on the sunrise time determined accurately, the target illuminance value is dynamically set according to the divided time zones to control the light emitting means 31 to 43, thereby providing more optimized lighting according to the environment. At the same time, it is possible to control the light emitting means so as to reduce power consumption and at the same time make people feel less eye fatigue.

However, if sunrise time is determined by this method, as shown in FIG. 5, the illuminance value measured by the illuminance sensor 20 is instantaneous due to blocking of an external light source due to an obstacle or cloud reflection from an external light source. As it turns into, there is a problem that it is difficult to determine the exact sunrise time.

Accordingly, according to an embodiment, the control unit 10 may calculate the change in illuminance using the illuminance value measured for a predetermined time, and determine the sunrise sunset time using the illuminance variation.

At sunrise time, the ambient light from the sunlight increases in the illuminance sensor 20, and as the illuminance value increases, the illuminance change amount increases. That is, as shown in FIG. 5, in the R2 time zone, the fluctuation range of the illuminance value changing for a predetermined time is larger than the R1 time zone, and the fluctuation width gradually increases over time. It can be seen that the fluctuation range of the illuminance value is larger in the time zone between 12 and 15 than in the R2 time zone. On the contrary, at sunset time, the external light coming from sunlight into the illuminance sensor 20 decreases, so that the illuminance value decreases, and at the same time, the amount of illumination change decreases. As shown in FIG. 5, it can be seen that the fluctuation range of the illuminance value that changes for a predetermined period of time before 18:00 becomes smaller in braille.

Therefore, when the fluctuation range of the illuminance value is greater than or equal to a predetermined size based on the difference between the maximum value and the minimum value of the illuminance value measured for a certain period of time (hereinafter referred to as "first time"), any one of the first hours is the sunrise time. When the fluctuation range of the illuminance value is equal to or less than a predetermined size, any one of the first times may be determined as the sunset time. Of course, in order to determine the sunrise time, the constant size compared with the fluctuation range of the illuminance value should be a value larger than the fluctuation range of the illuminance value measured in the time period for calculating the base illuminance value.

However, the illuminance value measured through the illuminance sensor 20 may be influenced by changes in the surrounding environment, such as reflection of sunlight by an obstacle such as a vehicle, and/or weather changes, such as cloud movement, based on this. If the time of sunrise mall is judged, there will be an error at the time of sunrise mall determined by the instantaneous and frequent changes in illuminance.

Therefore, as another embodiment for removing the above-described error, it is possible to calculate the slope of the illuminance value measured during the first time through the illuminance sensor 20, and the slope of the calculated illuminance value is 0 or a certain size The time of the sunrise mall can be judged whether it is larger or smaller.

As described above, it is possible to determine the sunrise sunset time based on the change in the illuminance value, but in order to remove noise due to an instantaneous environmental change and/or weather change, the illuminance value measured within the first time is averaged, and the average value And the base illuminance value may be compared to determine the sunrise sunset time.

That is, the control unit 10 has an average of the illuminance value measured for the first time through the illuminance sensor 20 is greater than or equal to a certain level than the base illuminance value, and a gradient of change in the illuminance value measured during the first time is 0 or a constant size. In the case of a larger value, one of the first times may be specified and determined as the sunrise time. Alternatively, the control unit 10 has an average of the illuminance values measured during the first time through the illuminance sensor 20 within a predetermined range from the base illuminance value, and a slope of change of the illuminance values measured during the first hour is 0 or constant. If it is smaller than the size, one of the first times may be specified and determined as the sunset time.

In the case of the illuminance value graph shown in FIG. 5, since the average of the illuminance values measured in the R2 time zone is greater than or equal to a target illuminance value, and the gradient of change in the illuminance value measured during the R2 time zone is greater than 0, during the R2 time zone Since any one time can be determined and determined as the sunrise time, as the closer to 18 o'clock, the amount of change in illuminance measured by the illuminance sensor 20 decreases, and the amount of change in illuminance tends to decrease, the controller 10 controls A specific time in the vicinity of the previous can be determined as the sunset time.

In the previous embodiment, in order to remove noise due to an instantaneous environmental change and/or weather change, the illuminance value measured within the first time may be averaged, but as another example, a predetermined time within the first time (hereinafter, , By using two or more changes in the illuminance of the "second time"), it is possible to determine the sunrise time by determining whether the illuminance value increases or decreases within the first time.

That is, the control unit 10 has an illuminance value measured by the illuminance sensor 20 greater than or equal to a certain level than the base illuminance value, and a change in the illuminance value measured in the first time is greater than 0, and an illuminance value for the second time If the number of increases is greater than the number of decreases, it can be determined by the sunrise time. Alternatively, the control unit 10 is the illuminance value measured by the illuminance sensor 20 is within a certain range from the base illuminance value, the change in the illuminance value measured within the first time is less than 0, the illuminance for the second time If the number of times the value decreases is more than the number of increases, it can be determined as the sunset time.

Assuming, in addition to the first tendency in which the illuminance value increases with time within a predetermined time range (refer to the R2 time zone shown in FIG. 5), the second in which the illuminance value instantaneously decreases due to weather changes such as cloud movement. You can have a tendency at the same time. In this case, due to the second tendency, the control unit 10 may misinterpret that the sunrise time is not the sunrise time due to the noise as described above.

Accordingly, when a plurality of tendencies representing changes in illumination values over time within a predetermined time range are different, a number of illumination changes for the second time in the first hour are calculated, and the illumination values change over time. By judging the trend, if the trend is increasing, any one of the first times can be determined as the sunrise time, and if the illuminance value is a trend that decreases with time, the one of the first times is the sunset time You can decide.

In order to remove noise due to instantaneous environmental changes and/or weather changes, as another embodiment, a predetermined time range moving with time based on the current is set, and a certain number of illuminance values within a set time range By determining whether the average value increases or decreases using a moving average, it is possible to determine a sunrise sunset time.

If there is a new measured illuminance value, the moving average value can be calculated by using a certain number of illuminance values within a certain time range based on the new measured illuminance value, except when calculating the average value of the first measured illuminance value. have.

As described above, when a range of a predetermined time to move is set, and the illuminance values in the range are averaged, the average value is greater than or equal to a certain size than the base illuminance value, and when the illuminance value increases over time, a specific time within the range It can be determined as the sunrise time, on the contrary, when the average value is within a certain range from the target illuminance value, and the illuminance value decreases with time, a specific time within the range may be determined as the sunset time.

By setting a predetermined time range to move in this way and using the average value within the range, the change trend of the illuminance value can be known without being influenced by an instantaneous environmental change and/or weather change.

Of course, in order to know the trend of the change in the illuminance value, when the slopes of the plurality of average values are equal to or greater than 0, it may be determined that the illuminance value increases, and conversely, the inclinations of the plurality of average values may be equal to or less than 0 or a predetermined size. In this case, it can be determined that the illuminance value is decreasing.

At this time, the sample illuminance value used to determine the sunrise time may be set to an optimal interval and/or range by experiment, but as an example, the illuminance value is repeated in units of 1 minute through the illuminance sensor 20. Measurement, but a moving average value can be calculated based on the previously measured illuminance value for 30 minutes, and a trend of change in the illuminance value can be determined from the moving average value.

4th Example

As described above, the control unit 10 of the lighting control apparatus according to an embodiment of the present invention uses at least one light emitting means 31 based on a preset target illumination value using an illumination value measured by the illumination sensor 20. ~43).

At this time, when the control unit 10 sets the target illuminance value differently for each time zone and controls the illuminance of the light emitting means 31 to 43 according to the changed target illuminance value, according to an embodiment, The illuminance can be adjusted step by step.

FIG. 6(a) is a graph showing illuminance values of a lighting providing area controlled by a lighting control device according to an embodiment of the present invention, and FIG. 6(b) is lighting control according to an embodiment of the present invention. It is a graph showing the illuminance value of one light emitting means controlled by the device.

As shown in Fig. 6(a), when the illuminance value of the illumination providing area measured by the illuminance sensor 20 at an arbitrary time T1 rises by the external light source 1 or the like, the illuminance value of the illumination providing area In order to lower the value from the target illuminance value RL to a value within a predetermined range, the control unit 10 controls the light emitting means 31 to 43 to have a low output.

That is, as shown in FIG. 6(b), the controller 10 may lower the output of the light emitting means 31 to 43 in a stepwise manner to adjust the brightness so that the illuminance value of the illumination providing area reaches the target illuminance value. .

However, when the control unit 10 controls the output of the light emitting means 31 to 43 to be lowered or increased stepwise, the time it takes for the illuminance value of the illumination providing area to reach the target value (=T2-T1). That is, there is a problem that the response time is long, and accordingly, when controlling the illuminance of the light emitting means 31 to 43, the control unit 10 has one or a combination of proportional control, differential control and integral control to have a short response time. It is preferred to.

When the control unit 10 controls the light emitting means 31 to 43 by any one or a combination of proportional control, differential control and integral control under the same conditions as in FIG. 6(a), FIG. 7(b) By drawing a graph as shown in the figure, the illuminance of the light emitting means 31 to 43 can be controlled.

Accordingly, as shown in FIG. 7(a), when the illuminance value of the illumination providing area measured by the illuminance sensor 20 at an arbitrary point in time T1 rises by the external light source 1 or the like, the controller 10 ) Controls the output of the light emitting means 31 to 43 as shown in Fig. 7(b), so that the time taken to reach the target value within a certain range of the targeted illuminance value RL (= T3) -T1) That is, the response time is shorter than the control method by the control method as shown in FIG. 6(b).

At this time, when the control unit 10 controls the light emitting means 31 to 43, it is preferable to periodically update the control coefficients for at least one of proportional control, differential control and integral control. By repeatedly updating the control coefficients and controlling the light emitting means 31 to 43 accordingly, the illuminance of the light emitting means 31 to 43 draws a response curve as shown in Fig. 7(b), resulting in overshoot or response. Errors such as speed will not occur.

That is, when the illuminance of the light emitting means 31 to 43 is controlled by the control unit 10, the response curve indicates environmental conditions such as the number of light emitting means 31 to 43 or the area of the area where the light emitting means provides illuminance. There is a problem in that an error occurs in overshoot or response speed in actual implementation due to various causes, including. Accordingly, in order to solve such an error, the control coefficient is periodically updated, but any one of a difference, a delay time, a time constant, or a combination of the difference between the illuminance value and the target illuminance value (target value) measured by the illuminance sensor 20 It is desirable to update the control coefficient in consideration of. At this time, the update period is to update the daily (24 hours) period to set the updated control coefficient in consideration of the overshoot and response speed compared to the illuminance value between the illuminance value and the target value measured by the illuminance sensor 20 during the day. desirable.

Article 5 Example

On the other hand, the lighting control device according to an embodiment of the present invention, as shown in Figure 2, the gateway 11, the lighting controller 12, one of the interface unit 13 and the communication unit 140 or their Combinations.

The gateway 11 is a means for performing overall control, such as controlling on/off operation of power or controlling dimming for some or all of the light emitting means 31 to 43 to be.

Meanwhile, devices such as an air conditioner and a showcase may be connected to the gateway 11, and the user is connected to the gateway 11 through the interface unit 13, so that the air conditioner and/or remotely and/or remotely It is possible to perform control of temperature, air volume, and blowing for the showcase.

The lighting controller 12 is communicatively connected between the gateway 11 and the light emitting means 31 to 43 and/or the illuminance sensor 20, so that the gateway 11 and the light emitting means 31 to 43 and/or the illuminance sensor are connected. It is a means of transferring data between (20).

That is, the lighting controller 12 is wired or wirelessly connected to the light emitting means 31 to 43 to receive a control command transmitted from the gateway 11, and can be transmitted to the light emitting means 31 to 43, and also emits light. Response or event information from the means 31 to 43 can be received and transmitted to the gateway 11.

PSDN (Public Switching Data Network), ISDN (Integrated Services Digital Network) between the gateway 11 and the lighting controller 12, and between the lighting controller 12 and the illuminance sensor 20 and/or light emitting means 31 to 43 , Wired communication such as ADSL (Asymmetric Digital Subscriber Line), VDSL (Very-high-data rate Digital Subscriber Line), Ethernet, PLC (Power Line Communication), or WiBRO (WIBRO), HSDPA (High Speed) Downlink Packet Access (WCDMA), Zigbee, Ultra Wide Band (UWB), Wireless Fidelity, World Interoperability for Microwave Access (IRMAX), Infrared Data Association (IRDA), Radio Frequency (RF), It may be connected by wireless communication such as Bluetooth, Mobile Computing, Trunked Radio System (TRS), and IEEE1394.

The interface unit 13 is a means for receiving a control command for directly controlling the light emitting means 31 to 43 from a user, or for outputting the state of the current light emitting means 31 to 43 (power on/off state, illuminance, etc.). .

The interface unit 13 is a means for receiving a control command from a user or outputting status information, and may generally include a computer terminal or a control touch panel.

Furthermore, the interface unit 13 is a protocol for exchanging XML-based messages over a network using HTTP (HyperText Transfer Protocol), HTTPS (HyperText Transfer Protocol over Secure Socket Layer), and SMTP (Simple Mail Transfer Protocol). Using SOAP or BACnet, which is a communication protocol for building automation, a control command is input from a remote user, or various status information (illuminance value measured by the illuminance sensor 20, light emitting means 31 to 43) as a remote user )'S current illuminance value, target illuminance value, etc.).

As described above, the communication unit 14 is a means for transmitting and receiving data to and from an external device, and is communicatively connected to the weather station server to receive sunrise sunset time information from the weather station server.

Lighting control method

8 is a flowchart illustrating a lighting control method according to an embodiment of the present invention in a step-by-step flowchart.

The lighting control method according to an embodiment of the present invention includes a step (S10) of controlling the illuminance of the light emitting means, as shown in FIG. 8.

Hereinafter, with reference to Figures 1 to 7 will be described in detail, but overlapping with the preceding description will be replaced with it, and detailed description will be omitted.

Controlling the illuminance of the light emitting means (S10) is a step of controlling the illuminance of the plurality of light emitting means 31 to 43 based on the illuminance value measured by the illuminance sensor 20, the illuminance sensor 20 and the light emitting means It is characterized by controlling the illuminance of the light emitting means (31 to 43) according to the relative position between (31 to 43).

At this time, the relative position between the illuminance sensor 20 and the light emitting means 31 to 43 is based on the direction and distance of each of the light emitting means 31 to 43 based on the position of the illuminance sensor 20, and each light emitting means The displacement amount based on the reference target roughness value for (31 to 43) may be preset by user input or the like.

Meanwhile, the control unit 10 may set individual target illuminance values for the light emitting means 31 to 43, but as shown in FIG. 3, the light emitting means 31 to 43 disposed in the light providing area are installed. Accordingly, by grouping into at least one group, the illuminance of the light emitting means 31 to 43 can be controlled for each group. At this time, one group may include at least one light emitting means (31 to 43).

As described above, the grouping of the plurality of light emitting means 31 to 43 may be arbitrarily determined by the user, but as illustrated in FIG. 3, in the indoor light providing area, the light emitting means 31 to 43 are disposed. It is preferred to be grouped accordingly.

For example, one of the surfaces of the indoor area may be grouped according to a relative distance from the position of the illuminance sensor 20 based on the surface to which light is incident from the external light source 1 such as sunlight. That is, as illustrated in FIG. 3, the light emitting means of reference numerals 31 and 41 sequentially located in the Z1 area toward the inner side based on the surface where the window W is located is a first group, and the reference number located in the Z2 area The light emitting means of 32 and 42 may be set as the second group, and the light emitting means of 33 and 43 located in the Z3 area may be set as the third group.

The light emitting means (31 to 43) belonging to each group divided by grouping the light emitting means (31 to 43) in this way is based on the reference target illuminance value according to the relative position according to the direction and distance with the illuminance sensor 20 It is preferable that one displacement amount is set differently. At this time, the specific point for calculating the direction and distance with the illuminance sensor 20 is the light emitting means (31 ~ 43) is any one light emitting means belonging to a group or the direction and distance calculated for each light emitting means belonging to a group It can be the average point for or a differently specified point. In this way, the light emitting means for each group 31 to 43 are set differently based on the reference target illuminance value according to the relative position according to the direction and distance from the illuminance sensor 20, and each light emitting means 31 to 31 in the illumination providing area 43) It is preferable that they are collectively controlled according to the set target illumination value.

On the other hand, when the control unit 10 controls the illuminance of the light emitting means 31 to 43 individually or by group, when the light emitting means 31 to 43 set a target illumination value higher or lower than the reference target illumination value, specific Of course, it can be set by adding or subtracting by the amount of displacement, or by multiplying or dividing a specific weight.

As described above, the problem of causing eye fatigue and/or wasting energy that may occur when collectively controlling the illuminance of the light emitting means 31 to 43 in the illumination providing area without considering the relative position with the illuminance sensor 20 is a lighting providing area In can be solved by controlling the illuminance individually or in groups for the light emitting means according to the relative position of the light emitting means based on the position of the illuminance sensor.

According to another embodiment of the present invention, the step of controlling the illuminance of the light emitting means (S10), as illustrated in FIG. 8, the illuminance value measured by one illuminance sensor 20 is preset target illuminance It may include a step (S140) of controlling the illuminance of the light emitting means (31 to 43) to a value.

Specifically, controlling the illuminance of the light emitting means 31 to 43 such that the illuminance value measured by the illuminance sensor 20 becomes a preset target illuminance value (S140), according to an embodiment, the control unit 10 When controlling the light emitting means (31 to 43) to control the illuminance of the light emitting means (31 to 43) in accordance with the target illumination value is set differently when the target illumination value is changed, the illuminance of the light emitting means (31 to 43) step by step It can be adjusted by increasing or decreasing by the illuminance (see Fig. 6(b)).

However, when the control unit 10 controls the output of the light emitting means 31 to 43 to be lowered or increased stepwise, there is a problem in that the response time for the indoor illumination value to reach the target value is long, and thus, In order to have a short response time, the control unit 10 preferably controls the illuminance of the light emitting means 31 to 43 to be one of proportional control, differential control and integral control, or a combination thereof.

At this time, when the control unit 10 controls the illuminance of the light emitting means 31 to 43, the control coefficient is periodically updated to prevent errors such as overshoot or response speed, but the illuminance sensor 20 is used. It is preferable to update and set the control coefficient in consideration of any one of the difference between the illuminance value measured through and the target illuminance value (target value), delay time, time constant, or a combination thereof. At this time, the update period is to update the daily (24 hours) period to set the updated control coefficient in consideration of the overshoot and response speed compared to the illuminance value between the illuminance value and the target value measured by the illuminance sensor 20 during the day. desirable.

Specifically, by repeatedly updating one or a combination of delay time (L), time constant (T), and gain (K), the control unit 10 may occur when controlling the light emitting means (31 to 43). You can reduce overshoot or response time.

On the other hand, according to an embodiment of the present invention, the step of controlling the illuminance of the light emitting means (31 to 43) (S10), as shown in Figure 7, setting the target illumination value according to the divided time zone (S130) may be further included. The control unit 10 controls the illuminance of the light emitting means 31 to 43 so that the illuminance value measured by the illuminance sensor 20 follows a preset target illuminance value (S140), but classifies the time zones, and according to the divided time zones. It is preferable to set the target illuminance value so that the light emitting means 31 to 43 are controlled. Because, by setting the target illuminance value dynamically according to the change in the environment caused by the external light source 1, the control unit 10 extends the control width of the light emitting means 31 to 43 of the control unit 10. This is because the power consumption for the light emitting means 31 to 43 can be reduced while controlling to provide more appropriate lighting.

In this case, the setting of the target illuminance value (S130) uses the illuminance table in which the target illuminance value according to the time stored in the storage unit (not shown) is set according to an embodiment (S111) to distinguish the target illuminance value. It can be set according to the time zone (S130). At this time, the target illuminance value stored in the illuminance table is set differently with time, as indicated by reference numeral S in FIG. 4. Preferably, the illuminance table stored in the storage unit (not shown) may store a target illuminance value according to time according to season or month.

According to another embodiment of the present invention, as a day for classifying the time zone, it may be based on the time of sunrise mall, determining the time of sunrise mall, and further comprising the step of classifying the time zone based on this (S120) Can be.

At this time, the sunrise mall time can receive sunrise sunset time information from the weather station server (not shown) through the communication unit 14 connected to the control unit 10 (S112), and the target illumination value according to the time zone divided based on this. By setting (S130), it is possible to control the light emitting means (31 to 43) based on this (S140).

At this time, since the Meteorological Agency server (not shown) provides sunrise mall time for each region, the sunrise mall time may differ for each store, so the controller 10 uses the illuminance sensor 20 to illuminate the sensor 20. The time zone is divided based on the sunrise sunset time determined based on the illuminance value for the external light source measured in (S113) (S120), and the target illuminance value is set according to the divided time zone (S130), and the light emitting means 31 to 43) is preferably controlled (S140).

When determining the sunrise mall time using the illuminance value measured by the illuminance sensor 20, the control unit 10 determines the sunrise time within a predetermined time range based on a case greater than the preset first illuminance value according to an embodiment. The time of the sunset may be determined within a predetermined time range based on the case of determining or smaller than the preset second illuminance value, and the time zone may be distinguished based on the determined sunrise mall time (S120).

At this time, the first and second illuminance values may be set to arbitrary illuminance values, but the illuminance values measured at the time of the smallest change in illuminance of the day are calculated (not shown) as a base illuminance value, and thus a certain size or a certain range. It is preferable to determine the first and second illuminance values with the values within.

The time zones are classified based on the sunrise time determined accurately for each lighting area, and the target illumination values are dynamically set according to the divided time zones so that the light emitting means 31 to 43 are controlled. By providing lighting, it is possible to control the illuminance of the light emitting means so as to reduce power consumption and at the same time make people feel less tired of the eyes.

However, if the sunrise time is determined by this method, as shown in FIG. 4, the illuminance value measured by the illuminance sensor 20 is instantaneous due to the reflection of the external light source by an obstacle or blocking of the external light source by the cloud. It is difficult to determine the correct sunrise mall time.

Accordingly, in the determining of the sunrise time by using the illuminance sensor 20 (S113 ), according to another embodiment, the controller 10 calculates the illuminance change amount using the illuminance value measured for a predetermined time and illuminates Using the amount of change, it is possible to determine the time of sunrise mall.

As another embodiment, the control unit 10 may calculate the slope of the illuminance value measured during the first time through the illuminance sensor 20, and whether the slope of the calculated illuminance value is greater than or equal to 0 or a predetermined size Whether or not the sunrise mall time can be determined.

As another embodiment, the control unit 10 may average the illuminance value measured within the first time to remove noise caused by an instantaneous environmental change and/or weather change, but as another example, the control The sunrise sunset time may be determined by determining whether the illuminance value increases or decreases within the first time by using two or more changes in illuminance of 2 hours.

As another embodiment, the controller 10 sets a certain time range moving based on the current, and whether the average value increases or decreases by using a moving average of a certain number of illuminance values within the set time range. By determining whether or not, it is possible to determine the time of the sunrise mall. If there is a new measured illuminance value, the average value may be calculated using a certain number of illuminance values within a predetermined time range based on the new measured illuminance value, except for calculating the average value of the first measured illuminance value. . At this time, the sample illuminance value used to determine the sunrise time may be set to an optimal interval and/or range by experiment, but as an example, the illuminance value is repeated in units of 1 minute through the illuminance sensor 20. It is possible to measure, but calculate a moving average value based on the previously measured illuminance value for 30 minutes and determine the trend of the change in illuminance value from the average value.

Computer-readable recording media

The lighting control method according to an embodiment of the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, or the like alone or in combination. The program instructions recorded on the computer-readable recording medium may be specially designed and configured for the present invention or may be known and available to those skilled in the computer software field. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs, DVDs, and magneto-optical media such as floptical disks. optical media), and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes produced by a compiler, but also high-level language codes executable by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform processing according to the present invention, and vice versa.

The preferred embodiments of the present invention described above are disclosed to solve the technical problems, and those skilled in the art to which the present invention pertains may make various modifications, changes, additions, etc. within the spirit and scope of the present invention. However, such modifications and changes should be considered as belonging to the following claims.

1: External light source 10: Control unit
11: Gateway 12: Lighting controller
13: interface unit 14: communication unit
20: illuminance sensor 31, 32, 33, 41, 42, 43: light emitting means
100: light control system W: window

Claims (27)

A control unit for controlling the illuminance of the plurality of light emitting means based on the illuminance value measured by the illuminance sensor;
Including,
The control unit,
At least one of the result of comparing the change in illuminance calculated by the illuminance value measured for a certain time through the illuminance sensor, the illuminance value and the set base illuminance value, and comparing the magnitude of the slope calculated with the illuminance value. Lighting control characterized by determining the sunrise sunset time based on the sunrise, and controlling the illuminance of the light emitting means with a target illuminance value set in a time zone divided according to the relative position between the illuminance sensor and the light emitting means based on the sunrise sunset time Device. According to claim 1,
The control unit,
The lighting control device, characterized in that by grouping the light emitting means into at least one group according to the installed position, to control the illuminance of the light emitting means for each group. According to claim 1,
The control unit,
And a target illumination value based on the direction and distance in which the light emitting means is located based on the position of the light sensor relative to the light emitting means. The method of claim 3,
The control unit,
Lighting control device characterized in that for controlling the illuminance of the light emitting means so that the illuminance value measured by the one illuminance sensor is a predetermined target illuminance value. delete According to claim 1,
A storage unit storing an illuminance table in which the target illuminance value is set for each time zone;
Including more,
The control unit, the lighting control device, characterized in that for controlling the light emitting means according to the target illumination value using the illumination table. According to claim 1,
A communication unit that receives sunrise mall time information from a weather station server;
Including more,
The control unit, the lighting control device, characterized in that for controlling the light emitting means according to the time zone divided based on the sunrise time and the sunrise time determined by the illuminance value received from the weather station server. delete According to claim 1,
The control unit,
The illuminance value measured at the time of the smallest change in illuminance of the day through the illuminance sensor is used as a base illuminance value, and the illuminance value measured through the illuminance sensor is compared with the base illuminance value to determine the sunrise time Lighting control device, characterized in that. The method of claim 9,
The control unit,
When the average value of a predetermined number of illuminance values measured by the illuminance sensor is greater than or equal to a certain magnitude than the base illuminance value, and when the average value increases with time, determine the sunrise time, or the average value passes over time When it decreases according to the lighting control device, characterized in that for determining the sunset time. According to claim 1,
The control unit,
Illumination control device for calculating the amount of change in the illumination for a certain period of time based on the value of the illumination measured by the illumination sensor, and using the amount of illumination change to determine the sunrise time. The method of claim 4,
The control unit,
Lighting control device characterized in that the control of the light emitting means by any one or a combination of proportional control, differential control and integral control. Illuminance sensor;
A plurality of light emitting means; And
A control unit for controlling the illuminance of the light emitting means based on the illuminance value measured by the illuminance sensor;
Including,
The control unit,
At least one of the result of comparing the change in illuminance calculated by the illuminance value measured for a certain time through the illuminance sensor, the illuminance value and the set base illuminance value, and comparing the magnitude of the slope calculated with the illuminance value. Lighting control characterized by determining the sunrise sunset time based on the sunrise, and controlling the illuminance of the light emitting means with a target illuminance value set in a time zone divided according to the relative position between the illuminance sensor and the light emitting means based on the sunrise sunset time system. Controlling the illuminance of the light emitting means based on the illuminance value measured by the illuminance sensor;
Including,
Controlling the illuminance of the light emitting means,
At least one of the result of comparing the change in illuminance calculated by the illuminance value measured for a certain time through the illuminance sensor, the illuminance value and the set base illuminance value, and comparing the magnitude of the slope calculated with the illuminance value. Lighting control characterized by determining the sunrise sunset time based on the sunrise, and controlling the illuminance of the light emitting means with a target illuminance value set in a time zone divided according to the relative position between the illuminance sensor and the light emitting means based on the sunrise sunset time Way. The method of claim 14,
Controlling the illuminance of the light emitting means,
Lighting control method characterized in that by grouping the light emitting means into at least one group according to the installed position, to control the illuminance of the light emitting means for each group. The method of claim 14,
Controlling the illuminance of the light emitting means,
Lighting control method for the light emitting means, characterized in that for setting the target illuminance value based on the direction and distance of the light emitting means based on the position of the illuminance sensor. The method of claim 16,
Controlling the illuminance of the light emitting means,
Controlling the illuminance of the light emitting means so that the illuminance value measured by one illuminance sensor is a preset target illuminance value; Lighting control method comprising a. The method of claim 17,
Controlling the illuminance of the light emitting means,
Setting the target illuminance value according to the divided time zone;
Lighting control method further comprising a. The method of claim 18,
Controlling the illuminance of the light emitting means,
Reading an illuminance table in which the target illuminance value is set over time; The method of claim 1, further comprising: controlling the illuminance of the light emitting means according to the target illuminance value using the illuminance table. The method of claim 18,
Controlling the illuminance of the light emitting means,
At least one of an illuminance change amount calculated as an illuminance value measured for a predetermined time through the illuminance sensor, a result of comparing the illuminance value with a set base illuminance value, and a result of comparing the magnitude of the gradient calculated with the illuminance value. Determining a time of sunrise mall based on the steps, and classifying a time zone based on the time of sunrise mall;
Lighting control method further comprising a. The method of claim 20,
Controlling the illuminance of the light emitting means,
Receiving sunrise time information from a meteorological agency server;
Including more,
Setting the target illumination value,
And setting the target illumination value according to the time zone divided according to the sunrise sunset time based on the received sunrise sunset time information and the sunrise sunset time determined by the illuminance value. The method of claim 20,
Measuring illuminance for an external light source using an illuminance sensor;
Including more,
Setting the target illumination value,
Lighting control method characterized in that the target illumination value is set according to a time zone divided based on a sunrise time determined based on the illumination value measured by the illumination sensor. The method of claim 22,
Measuring an illuminance value in a time period during which the illuminance change is least in the day through the illuminance sensor, and calculating a base illuminance value;
Including more,
The step of distinguishing the time zone,
Lighting control method, characterized in that for comparing the illuminance value measured by the illuminance sensor and the base illuminance value, to determine the sunrise time. The method of claim 23,
The step of distinguishing the time zone,
When the average value of a certain number of illuminance values measured by the illuminance sensor is greater than or equal to a certain magnitude than the base illuminance, and when the average value increases over time, determine the sunrise time, or the average value over time If it decreases according to the lighting control method characterized in that to determine the sunset time. The method of claim 22,
The step of distinguishing the time zone,
Lighting control method characterized in that for calculating a change in illuminance over a period of time based on the illuminance value measured by the illuminance sensor, and determining the sunrise time by using the variation in illuminance. The method of claim 17,
Controlling the illuminance of the light emitting means to be the target illuminance value,
Lighting control method characterized in that the control of the light emitting means by any one or a combination of proportional control, differential control and integral control. A computer-readable recording medium recording a computer program for executing the lighting control method according to any one of claims 14 to 26.

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