JP2007184181A - Lighting control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting control system capable of achieving lighting allowing a required location to have appropriate illuminance with the minimum energy. <P>SOLUTION: An human attendance detection means to a work desk 5 installed indoors, and an operation detection means of a desk-top luminaire 7 are provided. An indoor illuminance distribution calculation means is prepared. An overall luminaire 3 is controlled so that the luminance distribution calculated by the indoor luminance distribution calculation means becomes optimum illuminance distribution conforming to the human attendance situation and operation situation of the desk-top luminaire, thus obtaining an optimum lighting environment with the minimum energy. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lighting control system.

  In recent years, energy conservation in buildings has progressed, and office lighting control systems also input daylight obtained by light sensors and information on the presence of people obtained by human sensors into lighting control panels. In this case, the general lighting apparatus as the base light is turned on and off, or the output is controlled so that the set illuminance is achieved.

For example, Patent Documents 1 and 2 describe illumination control technology using human sensors.
JP-A-8-329730 JP 2001-143877 A

1. Conventional lighting control using human sensors is to turn on / off lighting equipment based on information on whether or not there are people in the target area, and is not controlled in consideration of the position and number of people. . Therefore, if there is even one person in the target area, the lighting equipment in that area is turned on, and wasteful energy is consumed.
2. Some lighting devices have a human sensor function installed for each device, but the human detection range of human sensors is wide, for example, 2 meters in diameter when the ceiling height is 2.8 m. In practice, it cannot be controlled for each lighting device. Also, since lighting fixtures, in this case general lighting fixtures, are not arranged for each person, in order to turn them off, it must be detected that there is no person in the target area, When there are many people, the number of general lighting fixtures that are turned off is small. Therefore, the energy saving effect is only produced when there are few people, such as at night or on holidays.
3. In the office, a desk lamp, ie a task light, is installed to illuminate the desk locally. Some of these desk lamps are equipped with human sensors. It is a single control that is turned on when a person is detected by, and no interlocking control with general lighting equipment is performed.
The present invention aims to solve the above problems.

  In order to achieve the above-described object, the present invention allows a plurality of general lighting fixtures to be individually controlled in a room in which a plurality of general lighting fixtures are arranged on the ceiling and a desk lighting fixture is arranged on each of a plurality of work desks. In accordance with each work desk, it constitutes a human presence detection means and a lighting detection means for a desk lamp, and a control device capable of individually controlling the general lighting fixture from the detection means. An input unit for inputting a signal, a control output unit for outputting a control signal to each of the above general lighting fixtures, an optimal illuminance distribution derivation unit for deriving an optimal illuminance distribution in the room, and an illuminance distribution calculation unit in the room, The control output unit derives the optimum illuminance distribution corresponding to the person's presence state detected by the presence detection means by the optimum illuminance distribution derivation unit, and detects the lighting state of the general lighting equipment and the motion detection means. Desk lamp An illumination control system configured to derive the illuminance distribution in the room from the lighting state by the illuminance distribution calculation unit, and to control each general lighting fixture by outputting a control signal so that the illuminance distribution matches the optimal illuminance distribution. suggest.

  Further, in the present invention, in the above-described configuration, it is proposed that the person presence detection means is configured by a position detection system using RFID or the like, or configured to detect by the operating state of the device installed on the work desk. To do.

  In the present invention, it is proposed to arrange a plurality of light sensors on the ceiling in the above configuration.

  Further, in the present invention, in the above configuration, it is proposed that the optimum illuminance distribution derivation unit includes a storage unit that stores the optimum illuminance distribution in the schedule control.

  In the lighting control system of the present invention, the presence detection means detects whether or not a person is present at the work desk, so that the illuminance of the area including the work desk present is set to a bright brightness set in advance. Deriving the optimal illuminance distribution in the room where the illuminance is not present and the working desk area is not less than the illuminance, and the control output unit outputs the control output to each general lighting apparatus according to the optimal illuminance distribution. By doing so, it is possible to achieve illumination with a minimum energy where a necessary place has an appropriate illuminance.

  In this case, in the present invention, the illuminance distribution calculating unit calculates the illuminance distribution in the room from the lighting state of the general lighting fixture and the lighting status of the desk lighting fixture detected by the motion detection means, and this is calculated as the optimum illuminance distribution. The control lighting unit outputs a control signal so as to match the calculated illuminance distribution with the optimal illuminance distribution, thereby controlling the general lighting apparatus.

  By performing such control, for the work desk area where the desk lamp is lit, the corresponding general lighting fixture is turned off or dimmed, and the set illuminance is obtained on the work surface of the work desk. Energy consumption can be reduced.

  In the present invention, daylight control can be used in combination by arranging a plurality of light sensors on the ceiling. That is, when calculating the illuminance distribution in the room by the illuminance distribution calculation unit described above, the general lighting equipment can be turned off or dimmed by the amount corresponding to daylight by adding the illuminance by daylight detected by the light sensor. Thus, energy consumption can be further reduced.

  Further, in the present invention, the optimum illuminance distribution deriving unit is configured with a storage unit for storing the optimum illuminance distribution in the schedule control, so that the schedule control, that is, conditions such as weekdays, holidays, daytime, nighttime, and the like can be set. Control with consideration can be used in combination.

Next, an embodiment of a lighting control system according to the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view schematically showing the overall configuration of the illumination control system of the present invention, and FIG. 2 is a schematic ceiling plan view of the room shown in FIG.
Reference numeral 1 denotes a room such as an office. The room 1 has a grid system ceiling 2, and a plurality of general lighting fixtures 3 (3a, 3b,...) And a light sensor 4 (4a, 4b,. …) Are arranged vertically and horizontally. The layout of these arrangements is appropriate in addition to the example shown in FIG.

  Reference numeral 5 (5a, 5b,...) Denotes a plurality of work desks arranged on the floor 6 of the room 1, and a desk lamp 7 (7a, 7b,...) Is arranged on each of these work desks 5. . These desk lamps 7 are also configured to be individually controllable, and the desk lamps 7 can be operated to output whether their own operating state, that is, an ON state or an OFF state, depending on, for example, an energized state. It constitutes a detection means.

  Reference numeral 8 (8a, 8b,...) Indicates a person, and these persons 8 carry RFID 9 (9a, 9b,...), Respectively, and have their reader / writer 10 (10a, 10b,...). Installed in the vicinity of each work desk 5, these RFID 9 and reader / writer 10 constitute an occupancy detection means.

  Next, in FIG. 1, reference numeral 11 denotes a control device capable of individually controlling the general lighting fixture 3. The control device 11 includes an illuminance signal from the light sensor 4, an operation state signal from the desk lighting fixture 7, and a reader / writer. An input unit 12 for inputting a human detection signal from the writer 10, a control output unit 13 for outputting a control signal to each general lighting apparatus 3, an optimal illuminance distribution deriving unit 14 for deriving an optimal illuminance distribution in the room 1, An illuminance distribution calculation unit 15 that calculates the illuminance distribution in the room 1 is configured.

  Here, the optimum illuminance distribution deriving unit 14 includes, for example, a storage unit 16 that stores the set illuminance for each unit area obtained by dividing the work surface of the room 1 into a plurality of vertical and horizontal directions using a data table or the like. The optimum illuminance distribution is configured as a set of set illuminances for each.

  The set illuminance for each unit area stored in the storage unit 16 of the optimum illuminance distribution derivation unit 14, particularly the point of interest that changes the set illuminance between when the person 8 is present and when there is no person, such as the work desk 5. For the corresponding unit area, both set illuminances are stored and selected.

  Furthermore, the set illuminance for each unit area stored in the storage unit 16 of the optimal illuminance distribution deriving unit 14 corresponds to the optimal illuminance distribution in the schedule control, and is varied depending on conditions such as weekdays, holidays, daytime, and nighttime. The set illuminance is stored and selected in schedule control.

  Further, the illuminance distribution calculation unit 15 determines, for example, each point from the positions of the plurality of general lighting fixtures 3 and the desk lighting fixtures 7 and other lighting fixtures whose arrangements are known in advance and the setting conditions such as the lighting rate and the room index. The calculation is performed using a method such as law.

  In the above configuration, as shown in FIG. 1, since the person 9 is away from the work desk 5a on the left side in the drawing, the reader / writer 10a does not detect the RFID 9, so the reader / writer 10a Is output to the input unit 12 of the control device 11. In addition, the desk lamp 7a of the left work desk 5a is in an extinguished state, and the operation detecting means outputs an extinguished signal to the input unit 12 of the control device 11. On the other hand, since the person 8 is seated on the work desk 5b on the right side in the figure, the reader / writer 10b detects the RFID 9 and outputs a presence signal to the input unit 12 of the control device 11. In addition, the desk lamp 7b of the work desk 5b on the right side is in a lighting state, and the operation detecting unit outputs a signal of the lighting state to the input unit 12 of the control device 11.

  Thus, since the work desk 5 in which the person 8 is present in the room 1 is detected by the presence detection means comprising the RFID 9 and the reader / writer 10a, the optimum illuminance distribution deriving unit 14 is stored in the storage unit 16. The set illuminance in each area is selected on the condition that the user is present, and the optimum illuminance distribution is configured by the set.

  Next, the illuminance distribution calculation unit 15 selects the lighting state of the general lighting fixture 3 corresponding to the optimum illuminance distribution derived by the optimum illuminance distribution deriving unit 14 and also determines the lighting condition of the desktop lighting fixture 7 detected by the operation detecting means. From the lighting state, the illuminance distribution calculation unit 15 calculates the illuminance distribution in the room 1. The calculated illuminance distribution is collated with the optimum illuminance distribution, and the control output unit 13 outputs a control signal to each general luminaire 3 so that the calculated illuminance distribution matches the optimal illuminance distribution, thereby controlling the general luminaire. To do.

  In the present invention, by controlling the general lighting device 3 as described above, the illuminance of the area including the work desk 5b in which the person 8 is present is set to the bright illuminance set in advance, and the work that is not present. The area of the desk 5a is set to be equal to or lower than the illuminance. Further, the lighting of the optimal illumination distribution in the room is obtained after the general lighting fixture 3 is dimmed or turned off for the area of the work desk 5b in which the desk lighting fixture 7b is turned on. Can be realized with minimum energy.

  In this embodiment, since the light sensor 4 is arranged on the ceiling, when the illuminance distribution calculation unit 15 calculates the illuminance distribution in the room, the illuminance by the daylight detected by the light sensor 4 is added to the daylight distribution. The general lighting fixture 3 can be dimmed by the amount corresponding to light, and thus energy consumption can be further reduced.

  Here, by storing the optimal illuminance distribution in the schedule control in the storage unit 16 of the optimal illuminance distribution deriving unit 14, the above control takes into account the schedule control, that is, the conditions such as weekdays, holidays, daytime, nighttime, etc. Control can be used together.

  In the embodiment described above, the presence detection means is composed of the RFID 9 and the reader / writer 10, but detects the presence based on the operating state of the device 17 installed on the work desk 5. It can be configured. For example, when the device 17 is a device constituting a wired or wireless LAN, the operation status of the device 17 is detected via the LAN, and, for example, the absence is detected when the operation is not performed for a predetermined time or more. can do.

The lighting control system according to the present invention is as described above, and has the following advantages and is highly industrially applicable.
a. In the lighting control system of the present invention, the presence detection means detects whether or not a person is present at the work desk, so that the illuminance of the area including the work desk present is set to a bright brightness set in advance. Deriving the optimal illuminance distribution in the room where the illuminance is not present and the working desk area is not less than the illuminance, and the control output unit outputs the control output to each general lighting apparatus according to the optimal illuminance distribution. By doing so, it is possible to achieve illumination with a minimum energy where a necessary place has an appropriate illuminance.
b. In the lighting control system of the present invention, the illuminance distribution calculating unit calculates the illuminance distribution in the room from the lighting state of the general lighting fixtures and the lighting status of the desk lighting fixtures detected by the motion detecting means, and this is calculated as described above. By comparing the illuminance distribution and outputting the control signal from the control output unit so that the calculated illuminance distribution matches the optimal illuminance distribution, the general lighting equipment is controlled, so that the area of the work desk where the desk lighting equipment is lit In contrast, it is possible to obtain a set illuminance on the work surface of the work desk after the corresponding general lighting fixture is turned off or dimmed, and energy consumption can be reduced.
c. By arranging multiple light sensors on the ceiling, daylight control can be used together. That is, when calculating the illuminance distribution in the room by the illuminance distribution calculation unit described above, the general lighting fixture can be turned off or dimmed by the amount corresponding to daylight by adding the illuminance by daylight detected by the light sensor. Thus, energy consumption can be further reduced.
d. By configuring the optimal illuminance distribution derivation unit to store the optimal illuminance distribution in schedule control, the above control is combined with schedule control, that is, control that takes into account conditions such as weekdays, holidays, daytime, and nighttime. can do.

It is explanatory drawing which shows typically the whole structure of the illumination control system which concerns on this invention. It is a typical ceiling plan of the room shown in FIG.

Explanation of symbols

1 Room 2 Ceiling (Grid system ceiling)
3 (3a, 3b, ...) General lighting equipment 4 (4a, 4b, ...) Light sensor 5 (5a, 5b, ...) Work desk 6 Floor 7 (7a, 7b, ...) Desk lighting equipment 8 (8a, 8b, ...) ...) Person 9 (9a, 9b, ...) RFID
10 (10a, 10b,...) Reader / Writer 11 Control device 12 Input unit 13 Control output unit 14 Optimal illuminance distribution derivation unit 15 Illuminance distribution calculation unit 16 Storage unit 17 (17a, 17b,...)

Claims (5)

A plurality of general lighting fixtures are arranged on the ceiling, and a plurality of general lighting fixtures are configured to be individually controllable in a room where a desk lighting fixture is arranged on each of the plurality of work desks. And an input unit for inputting a signal from the detection means to a control device capable of individually controlling the general lighting apparatus, and each general lighting apparatus. A control output unit that outputs a control signal, an optimal illumination distribution deriving unit that derives an optimal illumination distribution in the room, and an indoor illumination distribution calculation unit, and the control output unit is detected by the presence detection means. The optimum illuminance distribution corresponding to the person's presence state is derived by the optimum illuminance distribution deriving unit, and the illuminance distribution calculating unit is obtained from the lighting state of the general lighting fixture and the lighting state of the desk lighting fixture detected by the motion detection means. By the room Lighting control system derives the illuminance distribution, the illuminance distribution is characterized by being configured to control the output to the general lighting fixtures and control signals to match the optimum illuminance distribution. 2. The lighting control system according to claim 1, wherein the human presence detection means is constituted by a position detection system using RFID or the like. 2. The lighting control system according to claim 1, wherein the human presence detection means is configured to detect based on an operating state of a device installed on the work desk. The lighting control system according to claim 1, wherein a plurality of light sensors are arranged on the ceiling. The illumination control system according to claim 1, wherein the optimum illuminance distribution derivation unit includes a storage unit that stores the optimum illuminance distribution in the schedule control.

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