JP2009231071A - Lighting control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting control system capable of controlling a whole lighting area constantly at a given illuminance, controlling a specific area constantly at a proper illuminance, and with also an energy-saving effect expected. <P>SOLUTION: The lighting control system 1 is provided with a control means 5 which outputs a lighting control signal corresponding to each illuminance target value of a fixed illuminance sensor 3 and a radio illuminance sensor 4 to an illumination apparatus 2 as being each control object, and at the same time, if lighting control is carried out based on detection of illuminance of both the fixed illuminance sensor 3 and the radio illuminance sensor 4, executes lighting control based on detection of the illuminance of the radio illuminance sensor 4 in priority to that of the fixed illuminance sensor 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an illumination control system that performs illumination control of an illumination area using an illuminance sensor.

Conventionally, the illuminance of an irradiated surface such as a desk surface or a floor surface is controlled to be constant using an illuminance sensor. For example, the illuminance is controlled to be constant by detecting reflected light reflected on the floor or wall surface by an illuminance sensor installed on the ceiling surface. However, since the reflected light is detected, the target illuminance is difficult to obtain unlike the target illuminance on the actual desk surface or work surface. As one means for solving such inconvenience, an attempt has been made to manipulate and correct the measured illuminance by the illuminance sensor so that the actual illuminance of the illumination area matches the measured illuminance by the illuminance sensor (Patent Document 1). reference).
JP 2002-75664 A

  However, the technique disclosed in Patent Document 1 relates to the illuminance of the entire illumination area, and has a problem that the work efficiency is low because an operator's manual correction work is involved during system construction and maintenance. Arise. On the other hand, in order to obtain the target illuminance on the desk surface or work surface, it is conceivable to use a wireless illuminance sensor that can be placed on the desk surface or work surface. Therefore, it is difficult to properly control the illuminance of the entire illumination area. In addition, a problem of erroneous detection occurs when an obstacle is placed on the illuminance sensor.

  The present invention has been made in view of the above problems. By using a fixed illuminance sensor and a wireless illuminance sensor in combination, the entire illumination area can be dimmed and controlled to a predetermined illuminance, and a specific area can be appropriately controlled. An object of the present invention is to provide a lighting control system that can control the light intensity to a certain level and can expect an energy saving effect.

  The lighting control system according to claim 1, a plurality of lighting fixtures; a fixed illuminance sensor that controls the plurality of lighting fixtures and detects the illuminance of an illumination area of the plurality of lighting fixtures; A wireless illuminance sensor that detects a specific illuminance in the illumination area and controls a dimming control signal corresponding to each illuminance target value of the fixed illuminance sensor and the wireless illuminance sensor. When dimming control is performed based on detection of illuminance of both the fixed illuminance sensor and the wireless illuminance sensor, the dimming based on detection of the illuminance of the wireless illuminance sensor is performed for the fixed illuminance sensor. And a control means for preferentially executing the control. The illuminance target values of the fixed illuminance sensor and the wireless illuminance sensor may be set to the same value or different values.

  The illumination control system according to claim 2 is the illumination control system according to claim 1, wherein the illuminance target value of the fixed illuminance sensor and the wireless illuminance sensor is equal to the illuminance target value of the fixed sensor. It is characterized by being set high.

  The illumination control system according to claim 3 is the illumination control system according to claim 2, wherein the control means changes the initial illuminance target value of the fixed illuminance sensor so as to approach the illuminance target value of the wireless illuminance sensor. And

  According to the first aspect of the present invention, by using the fixed illuminance sensor and the wireless illuminance sensor in combination, the entire illumination area can be dimmed and controlled to a predetermined illuminance, and the specific area can be made constant to an appropriate illuminance. There is an effect that light control can be performed.

  According to the second aspect of the invention, the entire illumination area can be dimmed and controlled with a predetermined illuminance, and the dimming can be controlled with an appropriate illuminance in a specific area, and the entire illumination area has a predetermined illuminance. On the other hand, it is possible to ensure the required illuminance and perform dimming control at the required place, and an energy saving effect can be expected.

  According to the invention described in claim 3, in addition to the invention described in claim 2, it is possible to provide an illumination control system capable of eliminating a sense of incongruity and discomfort due to a difference in illuminance.

  A lighting control system according to a first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic configuration diagram of a lighting control system, FIG. 2 is a layout diagram of lighting fixtures and illuminance sensors, FIG. 3 is a block diagram of the lighting control system, and FIG. 4 is a flowchart showing operations.

  As shown in FIG. 1, the lighting control system 1 includes a plurality of lighting fixtures 2, a fixed illuminance sensor 3, a wireless illuminance sensor 4, and a central control device 5 as control means. The lighting fixture 2 includes a fluorescent lamp 2a and a lighting device 2b, and is disposed on the ceiling surface 10. The lighting fixture 2 illuminates each illumination area A.

  A fixed illuminance sensor 3 is installed on the ceiling surface 10. The fixed illuminance sensor 3 is a photoelectric conversion element composed of a phototransistor, a photodiode, or the like, and has a function of generating a current or a voltage according to the amount of light emitted from the fluorescent lamp 2a. It is prepared for. The fixed illuminance sensor 3 is associated with a plurality of luminaires 2 as control targets, and the illuminance of the entire illuminating area A is reflected by reflected light from the floor surface or desk surface in the illuminating area A illuminated by the luminaire 2. It is configured to detect indirectly and send the detection signal to the central controller 5. Further, the target illuminance of the fixed illuminance sensor 3 is set by a remote control setting device. The target illuminance may be set in the central controller 5.

  The wireless illuminance sensor 4 is movable and, like the fixed illuminance sensor 3, is a photoelectric conversion element, and includes an operation unit, a wireless transmission unit, a display unit, a control unit, a memory, and a battery. The wireless illuminance sensor 4 is placed at a predetermined position on the desk 12 placed on the floor 11, and the desk 12 is placed in the illumination area A of the lighting fixture 2. Accordingly, the wireless illuminance sensor 4 is associated with a specific lighting fixture 2 among the plurality of lighting fixtures 2 as a control object, and the specific illumination in the lighting area A, that is, the actual illuminance on the top surface of the desk 12 is determined. It is designed to detect directly. Then, the detection signal is transmitted to the central control device 5 wirelessly. Note that the wireless illuminance sensor 4 and the luminaire 2 are associated with each other by using the irradiation light of the luminaire 2 and transmitting the ID of the luminaire 2 to the wireless illuminance sensor 4 through visible light communication. 4 is performed by receiving and storing. Of course, the association between the wireless illuminance sensor 4 and the luminaire 2 may be performed by manually inputting from the operation unit of the wireless illuminance sensor 4.

  The operation unit is provided with a power switch, a target illuminance input switch, and the like. The wireless transmission unit is configured to be able to transmit the detected illuminance, the ID of the lighting fixture 2 to be controlled, and the target illuminance. The display unit and the memory display and store the detected illuminance, the ID of the lighting fixture 2 and the target illuminance.

  The central control device 5 has a function of performing signal processing of the entire system, and is connected to the fixed illuminance sensor 3 and the luminaire 2 via the signal line 6. The central control device 5 is installed with its main body embedded in the wall so that the surface side on which a display unit, an operation unit, etc. (not shown) are provided is exposed on the wall surface.

  Next, referring to FIG. 2, an example of the arrangement of lighting fixtures and illuminance sensors in the office will be described. Desks 12 are arranged in two rows, and four cabinets 13 are arranged on one side. It is divided into a plurality of illumination areas A1 to A4 (the actual illumination area is wider than the dividing line in the figure), and a plurality of lighting fixtures 2 are arranged in each illumination area A1 to A4. In addition, a fixed illuminance sensor 3 that detects the illuminance of the illumination area and controls the luminaire 2 in the section is installed. And ID is provided to the some lighting fixture 2, respectively. In addition, in the illumination areas A1 and A3, the specific illumination areas B1 and B3 in the illumination areas A1 and A3, that is, the wireless illuminance sensor 4 for detecting the actual illuminance on the top surface of the desk 12 is arranged. Further, the wireless illuminance sensor 4 is in the illumination areas A1 and A3, and the specific illumination fixtures 2 in the illumination areas B1 and B3 in the section are controlled.

  Specifically, for example, in the illumination area A3, lighting fixtures 2-1 to 2-6 (fluorescent lamps 1 to 6) are disposed, and the fixed illuminance sensor 3 is configured of these lighting fixtures 2-1 to 2. -6 (fluorescent lamps 1 to 6) is the control target. A wireless illuminance sensor 4 is disposed on the top surface of the desk 12 in the illumination area B3, and the wireless illuminance sensor 4 controls the lighting fixtures 2-1, 2-2 (lamps 1, 2).

  In FIG. 3, the central control device 5 includes a main control unit 7, illumination sensor receiving units 5a and 5b, a storage unit 5c, a display unit 5d, and a dimming control signal output unit 5e. And the fixed illumination intensity sensor 3 and the lighting fixture 2 are connected to the central control apparatus 5 with the signal wire | line, and the wireless illumination intensity sensor 4 is wirelessly connected.

  When the illuminance detection signal and the target illuminance signal are transmitted from the fixed illuminance sensor 3, the illuminance sensor receiver 5 a receives the illuminance detection signal and the target illuminance signal, and inputs them to the main controller 7. The main control unit 7 compares the illuminance detection signal with the target illuminance signal, generates a dimming control signal, for example, a PWM dimming signal so as to match the target illuminance, and stores it in the storage unit 5c. It transmits to the light control signal output part 5e with ID of the lighting fixture 2. FIG. Subsequently, a dimming control signal is transmitted from the dimming control signal output unit 5e to the lighting device 2b of the lighting fixture 2, and the lighting fixture 2 is controlled to a constant target illuminance.

  On the other hand, when the illuminance detection signal, the ID of the lighting fixture 2 to be controlled, and the target illuminance signal are transmitted from the wireless transmitter of the wireless illuminance sensor 4, the illuminance sensor receiver 5 b receives the illuminance detection signal and inputs it to the main controller 7. The Similarly, the main control unit 7 compares the illuminance detection signal with the target illuminance signal, generates a PWM dimming signal so as to match the target illuminance, and controls the dimming control signal output unit together with the ID of the lighting fixture 2. 5e, a dimming control signal is transmitted from the dimming control signal output unit 5e to the lighting device 2b of the specific lighting fixture 2, and the lighting fixture 2 is controlled to a constant target illuminance.

  Here, the target illuminance of the fixed illuminance sensor 3 and the wireless illuminance sensor 4 is the same, but the control means 7 is configured to preferentially execute the process of the dimming signal based on the illuminance detection of the wireless illuminance sensor 4. Therefore, it is possible to appropriately control the illuminance on the top surface of the desk 12 as a work surface. The display unit 5d displays the lighting state of the lighting fixture 2 and the like. The fixed illuminance sensor 3 and the wireless illuminance sensor 4 have only a function of detecting illuminance and transmitting the detected illuminance signal to the central control device 5, and various data processing such as ID of the lighting fixture 2 and target illuminance May be configured so as to be borne by the central controller 5.

  Next, based on the flowchart of FIG. 4, the operation will be described with the illumination area A3 (see FIG. 2) as a representative. When the power is turned on, the fluorescent lamps 1 to 6 of the lighting fixtures 2-1 to 2-6 are turned on with the set target illuminance (S1). Next, it is determined whether or not the wireless illuminance sensor 4 is placed on the top surface of the desk 12, that is, whether or not there is an illuminance detection output of the wireless illuminance sensor 4 (S2). When there is no illuminance detection output of the wireless illuminance sensor 4, dimming control is performed on the fluorescent lamps 1 to 6 by the illuminance detection output of the fixed illuminance sensor 3 (S3). Therefore, dimming control of the entire illumination area based on the illuminance detection of the fixed illuminance sensor 3 is performed. Subsequently, the illuminance detection output value of the fixed illuminance sensor 3 and the stored target illuminance value, that is, the dimming target value are compared and calculated (S4), the comparison calculation result (difference) is added to the dimming target value, As a result, the comparison calculation result (difference) is corrected by adding it to the PWM dimming signal of the dimming target value (S5), and a corrected dimming control signal is generated (S6). -1 to 2-6, and dimming control of lamps 1 to 6 to a constant target illuminance.

  When the illuminance detection output of the wireless illuminance sensor 4 is present, the wireless illuminance sensor 4 is placed on the top surface of the desk 12 and the dimming control is performed on the work surface of the specific area with an appropriate illuminance. In this case, the specific illumination fixtures 2-1 and 2-2 (fluorescent lamps 1 and 2) to be controlled by the fixed illuminance sensor 3 and the wireless illuminance sensor 4 are overlapped. The dimming control of the lighting fixtures 2-1 and 2-2 (fluorescent lamps 1 and 2) to be controlled is preferentially performed. First, the fluorescent lamps 1 and 2 are lit at the target illuminance of the wireless illuminance sensor 4 (S7). The dimming control of the fluorescent lamps 1 and 2 is performed by the illuminance detection output of the wireless illuminance sensor 4 (S8). Subsequently, the illuminance detection output value of the wireless illuminance sensor 4 and the stored target illuminance value, that is, the dimming target value are compared and calculated (S9), and the comparison calculation result (difference) is added to the dimming target value. As a result, the comparison calculation result (difference) is corrected by adding it to the PWM dimming signal of the dimming target value (S10), and a corrected dimming control signal is generated (S11). -1, 2-2, and dimming control of lamps 1 and 2 to a constant target illuminance.

  On the other hand, for the lighting fixtures 2-3 to 2-6 (fluorescent lamps 3 to 6), the fluorescent lamps 3 to 6 are lit at the target illuminance of the fixed illuminance sensor 3 (S15). Dimming control is performed so as to coincide with (S16 to S19).

  As described above, according to the present embodiment, the entire illumination area can be dimmed and controlled with a predetermined illuminance, and the dimming can be controlled with an appropriate illuminance in a specific area such as the top surface of the desk 12. That is, it is possible to place the wireless illuminance sensor 4 in a place where appropriate illuminance is required while ensuring predetermined illuminance in the entire illumination area, and to perform dimming control while ensuring appropriate illuminance. .

  Next, a second embodiment of the illumination control system of the present invention will be described with reference to FIG. FIG. 5 is a flowchart showing the operation with the illumination area A3 as a representative. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 1st Embodiment, or an equivalent part, and the detailed description is abbreviate | omitted. In the first embodiment, the case where the target illuminances of the fixed illuminance sensor 3 and the wireless illuminance sensor 4 are set to be the same has been described, but in the present embodiment, the case where each target illuminance is set to a different value will be described.

  For example, when the target illuminance of the fixed illuminance sensor 3 is set to be lower than the target illuminance of the wireless illuminance sensor 4, only the work surface such as the top surface of the desk 12 is required illuminance (for example, the upper surface of the desk 12 while suppressing the entire illumination area to low illuminance (for example, 300 lux)). 750 lux), and an energy saving effect can be expected. In this case, when the wireless illuminance sensor 4 is activated, the lighting fixtures 2-1 and 2-2 to be controlled by the wireless illuminance sensor 4 are brightly controlled. It becomes higher than the value (detected as 550 lux during 300 lux control, etc.), and the lighting fixtures 2-3 to 2-6 may be dimmed. In order to avoid this, when a specific area is brightly controlled with the wireless illuminance sensor 4, the illuminance value detected by the fixed illuminance sensor 3 is set as a new target illuminance value of the fixed illuminance sensor 3. Therefore, it is possible to eliminate the light control of the lighting fixtures 2-3 to 2-6 due to the influence of the wireless illuminance sensor 4. That is, it is possible to eliminate the mutual influence due to the combined use of the fixed illuminance sensor 3 and the wireless illuminance sensor 4.

  5, the dimming control of the lighting fixtures 2-3 to 2-6 (fluorescent lamps 3 to 6) in the case where there is an illuminance detection output of the wireless illuminance sensor 4 is different from the first embodiment (FIG. 4). . First, the fluorescent lamps 3 to 6 are lit at the target illuminance of the fixed illuminance sensor 3 (S12). The illuminance detection output of the fixed illuminance sensor 3 is sent out (S13). A target illuminance value, that is, a dimming target value is set based on the illuminance detection output, and the initial dimming target value is changed (S14). Thereafter, dimming control is performed in accordance with the changed new dimming target value (S15 to S19).

  As described above, according to the present embodiment, the entire illumination area can be dimmed and controlled with a predetermined illuminance, and the dimming can be controlled with an appropriate illuminance in a specific area, and the entire illumination area has a predetermined illuminance. However, it is possible to perform dimming control while ensuring necessary illuminance at necessary places. Therefore, an energy saving effect can be expected, and the mutual influence due to the combined use of the fixed illuminance sensor 3 and the wireless illuminance sensor 4 can be eliminated.

  Next, a third embodiment of the illumination control system of the present invention will be described with reference to FIG. FIG. 6 is a flowchart showing the operation with the illumination area A3 as a representative. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 2nd Embodiment, or an equivalent part, and the detailed description is abbreviate | omitted.

  In the second embodiment, since the entire illumination area is suppressed to a low illuminance and only the work surface is set to a required illuminance, the target illuminance of the fixed illuminance sensor 3 is set low and the target illuminance of the wireless illuminance sensor 4 is set higher than that. When set, there is a problem that the difference in illuminance between the place where the wireless illuminance sensor 4 is arranged and the surrounding space is large, which is visually unnatural and causes discomfort and discomfort. In order to solve this problem, when the wireless illuminance sensor 4 is used, the luminaires 2-1 and 2-2 to be controlled by the wireless illuminance sensor 4 are controlled so that the illuminance difference does not cause discomfort. The target illuminance of the fixed illuminance sensor 3 that controls the illumination area including the illuminance is changed so as to approach the target illuminance of the wireless illuminance sensor 4.

  In FIG. 6, the dimming control of the lighting fixtures 2-3-2-6 (fluorescent lamps 3-6) in the case where there is an illuminance detection output of the wireless illuminance sensor 4 is different from the second embodiment (FIG. 5). . First, the fluorescent lamps 3 to 6 are lit at the target illuminance of the fixed illuminance sensor 3 (S20). The target illuminance of the fixed illuminance sensor 3 and the wireless illuminance sensor 4, that is, the dimming target value is compared (S21). It is determined whether or not the difference between the dimming target values is large (S22). When the difference is large, the initial dimming target value is changed so as to approach the target value of the wireless illuminance sensor 4. That is, the illuminance difference is filled to such an extent that it does not cause discomfort (S23). Thereafter, dimming control is performed in accordance with the changed new dimming target value (S24 to S28).

  On the other hand, in the determination of whether or not the difference between the dimming target values is large (S22), if it is determined that the difference is not large, the fluorescent lamps 3 to 6 have the target illuminance of the fixed illuminance sensor 3. The light is turned on (S29), and dimming control is performed so as to coincide with the initial target illuminance (S30 to S33).

  As shown in FIG. 2, suppose that the lighting fixtures 2-7 and 2-8 adjacent to the lighting fixtures 2-1 and 2-2 to be controlled by the wireless illumination sensor 4 are controlled by the wireless illumination sensor 4. When it is included in the illumination area A-1 of the fixed illuminance sensor 4-1, which is different from the fixed illuminance sensor 4-3 including the lighting fixtures 2-1, 2-2 to be different, the fixed illuminance sensor 4-1. By changing the target illuminance, it is possible to more naturally suppress the illuminance difference from the surroundings.

  As described above, according to the present embodiment, in addition to the same effects as the effects of the second embodiment, it is possible to eliminate a sense of discomfort and discomfort due to a difference in illuminance.

It is a schematic block diagram of 1st Embodiment of the illumination control system of this invention. It is an arrangement plan of the luminaire and illuminance sensor. It is a block diagram of the illumination control system. It is a flowchart which shows the operation | movement. It is a flowchart which shows the operation | movement of the 2nd Embodiment of this invention. It is a flowchart which shows the operation | movement of the 3rd Embodiment of this invention.

Explanation of symbols

2 ... Lighting equipment, 3 ... Fixed illuminance sensor, 4 ... Wireless illuminance sensor,
5 ... Control means (central control unit)

Claims (3)

Multiple lighting fixtures;
A fixed illuminance sensor that controls the plurality of lighting fixtures and detects the illuminance of the lighting areas of the plurality of lighting fixtures;
A wireless illuminance sensor that controls a specific luminaire out of the plurality of luminaires and detects the illuminance of the specific area in the illumination area;
Dimming control based on detection of the illuminance of both the fixed illuminance sensor and the wireless illuminance sensor, while outputting a dimming control signal corresponding to each illuminance target value of the fixed illuminance sensor and the wireless illuminance sensor to the lighting fixtures to be controlled Control means for preferentially executing dimming control based on detection of the illuminance of the wireless illuminance sensor with respect to the fixed illuminance sensor;
A lighting control system comprising:   2. The illumination control system according to claim 1, wherein the illuminance target value of the fixed illuminance sensor and the wireless illuminance sensor is set higher than the illuminance target value of the fixed sensor.   3. The illumination control system according to claim 2, wherein the control unit changes the initial illuminance target value of the fixed illuminance sensor so as to approach the illuminance target value of the wireless illuminance sensor.

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