JP2009123608A - Lighting control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting control system which can improve a visibility environment at night while improving an energy saving efficiency. <P>SOLUTION: The lighting control system includes lighting apparatuses 8A-8F arranged for each of a plurality of lighting areas A-F, human detection sensors 6A-6F which are arranged to meet each of the lighting areas and detects an existence of a human, and a lighting controller 2 which, in accordance with a detection result of the human detection sensor, controls a lighting output of the lighting apparatus provided in the lighting area for which the human detection sensor is arranged and, moreover, changes a range of the lighting area for which the human detection sensor is arranged. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting control system that controls the light output of a lighting fixture.

Conventionally, as an example of this type of lighting control system, human sensors are provided in each of a plurality of lighting areas each provided with a lighting fixture, and are arranged in each lighting area according to a human detection result of each human sensor. It is known that each lighting device is controlled to be individually turned on (ON) or turned off (OFF) (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 5-81572

  However, in such a conventional lighting control system, the lighting area controlled according to the detection result of the human sensor is fixed one-to-one with the human sensor, and the lighting fixtures are individually turned on for each lighting area. , For example, lighting fixtures only in lighting areas where the presence sensor detects the presence of a person is turned on, and the presence sensor detects the presence of a person in the adjacent lighting area around it. Therefore, the lighting fixture is turned off, and the difference in brightness between adjacent illumination areas increases.

  Such a lighting environment is particularly noticeable at night when the amount of external light is low, and the occupants who are present in the lighting area where the luminaire is lit are likely to feel uncomfortable and the work efficiency is reduced. There is.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an illumination control system capable of improving the visual environment while achieving energy saving efficiency.

  A lighting control system according to claim 1 includes: a lighting fixture arranged for each of a plurality of lighting areas; a human sensor for detecting presence or absence of a person arranged in association with each lighting area; Control means for controlling the light output of the luminaire arranged in the illumination area in association with the human sensor, while changing the range of the illumination area in correspondence with the human sensor according to the detection result of And characterized by comprising:

  The illumination control system according to claim 2 is characterized in that the control means changes the range of the illumination area associated with the human sensor according to time.

  The illumination control system according to claim 3 has an illuminance sensor that detects illuminance, and the control means changes the range of the illumination area associated with the human sensor according to the illuminance level detected by the illuminance sensor. It is characterized by that.

  In the illumination control system according to claim 4, when the control means cannot control the light output of the luminaire arranged in the required illumination area so that the illuminance of the required illumination area reaches a predetermined value, the illumination area The light control means which controls so that the illumination intensity of a required illumination area may become predetermined value by controlling the light output of the lighting fixture arrange | positioned in the illumination area adjacent to is characterized by the above-mentioned.

  According to the illumination control system of the first aspect, since the range of the illumination area associated with the human sensor can be changed by the control means, for example, the range of the illumination area is reduced to a narrow illumination area by the control means. Can be changed. In this case, the area of the luminaire that is turned on according to the detection result of the human sensor is also narrowed, so that power can be saved accordingly.

  On the other hand, when the lighting area is changed to a wide area, the lighting area where the lighting fixture is lit is enlarged, so the range of the difference in brightness produced between this lighting area that is lit and the adjacent lighting area that is not lit. Can be reduced.

  For this reason, it is possible to reduce the sense of incongruity caused by the difference in brightness felt by the person in the lighting area that is lit, thereby improving the visual environment.

  According to the illumination control system of the second aspect, at the time when the amount of collected external light is generally large, such as during the daytime, the range of the illumination area associated with the human sensor is changed to a narrow area by the control means. As a result, the area where the luminaire is lit can be narrowed, so that power can be saved.

  In addition, at the time of daytime or the like, the illumination area that is turned off is also relatively brighter than the nighttime due to external light or the like, and therefore there is less difference in brightness from the neighboring area that is lit than at nighttime. For this reason, it is possible to reduce the sense of incongruity caused by the difference in brightness of the person in the lighting area that is lit, and to improve the visual environment.

  On the other hand, in general, at times such as nighttime when the amount of ambient light is less than that of daytime, the range of the illumination area is widely changed by the control means, thereby reducing the sense of incongruity caused by the brightness difference and improving the visual environment. be able to.

  According to the illumination control system according to the third aspect, when the illumination level of the illumination area is generally high, such as in the daytime, the range of the illumination area associated with the human sensor can be changed to a narrow area.

  In this case, since the range of the lighting fixtures to be lit is narrow, power saving can be achieved.

  On the other hand, when the illuminance level is generally low, such as at night, by changing the range of the illumination area associated with the human sensor widely, the brightness difference between the illuminated illumination area and the unlit adjacent illumination area It is possible to improve the visual environment by reducing the sense of discomfort caused.

  In the illumination control system according to claim 4, when the illuminance of the required illumination area does not reach the required illuminance value, the illumination control system of the illumination area adjacent to the illumination area is configured to reach the illuminance value of the illumination area. By controlling the light output, the illuminance of the required illumination area can be set to a required value.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the part which is the same or it corresponds in a some attached drawing.

  FIG. 1 is a block diagram showing a part of an illumination control system 1 according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing a layout example of a plurality of illumination areas of the illumination control system 1 in plan view. is there.

  As shown in FIGS. 1 and 2, the illumination control system 1 is electrically connected to an illumination controller 2 which is an example of a control unit, and the illumination controller 2 via, for example, a two-wire transmission signal line 3. A plurality of illumination areas A, B, C, D, E, F and a wall switch 4 are provided.

  In each of the illumination areas A to F, control terminals 5A, 5B, ..., 5F, human sensors 6A, 6B, ..., 6F and illuminance sensors 7A, 7B, ..., 7F are electrically connected to the transmission signal line 3, respectively. Connected. In addition, a plurality of lighting fixtures 8A to 8F are electrically connected to the control terminals 5A to 5F, respectively.

  Each of the illumination areas A to F indicates an area to be illuminated, such as a plurality of offices, for example, at a company, etc. There are cases where the conditions for collecting external light such as areas where the amount of collected light is small are different.

  For this reason, each illumination area AF comprises at least one lighting fixture 8A-8F that can be dimmed. Each of these lighting fixtures 8A to 8F includes, for example, a fluorescent lamp, an LED (light emitting diode), a light bulb, and the like as a light source.

  Each of the human sensors 6A to 6F is, for example, a pyroelectric infrared sensor, and is disposed on, for example, the ceiling of each of the illumination areas A to F, and is associated with each of the illumination areas A to F. Each of the human sensors 6 </ b> A to 6 </ b> F detects the presence / absence of a person, and the presence / absence (presence / absence) detection signal of the person is transmitted to the illumination controller 2 via the transmission signal line 3.

  Each illuminance sensor 7 </ b> A to 7 </ b> F detects the illuminance of each of the illumination areas A to F, and transmits the illuminance detection signal to the illumination controller 2 via the transmission signal line 3.

  The illumination controller 2 is composed of a microprocessor, for example, and includes a CPU, RAM, and ROM (not shown). A program for controlling the CPU is recorded in the ROM, and the CPU reads detection signals from the human sensors 6A, 6B,... And the illuminance sensors 7A, 7B,. Control signals processed as necessary while giving and receiving are given to the required control terminals 5A, 5B to 5F, and the lighting fixtures 8A to 8F are turned on or off (or dimmed to the required brightness). To do.

  In the RAM, for example, each address of each illumination area A to F shown in FIG. 2, each human sensor 6A, 6B, 6C, 6D, 6E, 6F, and illuminance sensors 7A, 7B, 7C of these illumination areas A to F are stored. , 7D, 7E, 7F, and addresses of the control terminals 5A, 5B-5F, respectively.

  Further, the RAM is recorded with the control data table 9 for each time zone shown in FIG. 3, and the CPU refers to the control data table 9 and the lighting fixtures 8A of the respective lighting areas A to F according to the time. Control is performed to turn on or off -8F (or dimm to a predetermined brightness).

  The data table 9 for each time zone control shows one day, for example, from 4:00:00 to 17:00, 17: 0 to 19:00, 19: 0 to 24:00, 24: 0 to 8:00 in four time zones. The lighting fixtures 8A to 8F are controlled to be turned on and off by the individual control mode, the middle group control mode, and the large group control mode according to these time zones.

  The individual control mode is the smallest unit of the lighting / extinguishing control range when the lighting devices 8A to 8F in the respective lighting areas A to F are detected by the human sensors 6A to 6F in the respective lighting areas A to F. For each of the lighting areas A to F, all the lighting fixtures 8A to 8F or the required number are turned on, while the lighting fixtures 8A to 8F are turned on by the human sensors of the lighting areas A to F. When 6A to 6F detect the absence of a person, the illumination areas A to F are turned off or dimmed to a required brightness.

  Therefore, on / off control of the lighting fixtures 8A, 8A,. Absent.

  In the middle group control mode, for example, all the illumination areas A to F are divided into two middle groups A to C and D to F, and human sensors 6A to 6C corresponding to these middle groups A to C and D to F, for example. , 6D to 6F, when the presence of a person is detected, the lighting fixtures 8A to 8C or 8D to 8F for each of the middle groups A to C or D to F to which the human sensor that has detected the presence of the person belongs. All the units or the required number are turned on for each of the middle groups A to C and D to F. On the other hand, in these lighting fixtures 8A to 8C and 8D to 8F, all of the human sensors 6A to 6C or all of 6D to 6F for each of the middle groups A to C or D to F detected the absence of a person, respectively. Sometimes, each of the middle groups A to C and D to F to which the human sensors 6A to 6C or 6D to 6F that have detected the absence of a person are turned off or dimmed to a required brightness.

  In the large group control mode, for example, all the illumination areas A to F are configured as one large group A to F, and at least one of the human sensors 6A to 6F of the large groups A to F indicates the presence of a person. When detected, all or a required number of the lighting fixtures 8A to 8F of the large groups A to F are turned on. On the other hand, the lighting fixtures 8A to 8F that are turned on are turned off or dimmed to the required brightness when all the human sensors 6A to 6F in the large groups A to F detect the absence of a person.

  The lighting controller 2 includes a clock (not shown) for measuring time every day and a timer (not shown). That is, in general, the human sensors 6A to 6F of the pyroelectric infrared sensor detect the presence of a person by detecting the amount of change in infrared rays caused by the movement of an object such as a person having a temperature difference from the surroundings. Therefore, if the person does not move, the amount of change in the infrared rays cannot be detected, and it is determined that the person does not exist, that is, is absent.

  Therefore, when the lighting controller 2 receives detection signals from the human sensors 6A to 6F that detect the presence (attended) of the person, the lighting controller 2 starts a timer for each address of the human sensors 6A to 6F. Each predetermined set time is counted. If no presence detection signal is input from the human sensors 6A to 6F having the same address within the set time, the lighting controller 2 determines that the lighting area A has the same address as the human sensors 6A to 6F. It is determined that the person of ~ F is absent. On the other hand, when a detection signal is received from the human sensors 6A to 6F having the same address within the set time, it is determined that a person is still present in the same lighting area A to F as the address, and the lighting is performed. The lighting fixtures 8A to 8F in the areas A to F are continuously turned on, the timer at the address is cleared to the initial state, and then the time measurement is started again.

  Next, the operation of the illumination control system 1 will be described.

  First, when the lighting controller 2 receives detection signals from the human sensors 6A to 6F, the lighting controller 2 searches for the addresses of the human sensors 6A to 6F and starts timers for the respective addresses.

  The lighting controller 2 reads the current time from the clock, refers to the time zone control data table 9 shown in FIG. 3, determines which time zone the current time belongs to, and the time zone is 8:00. In the case of ˜17: 00 and 24:00 to 8:00, each of the illumination areas A to F is controlled in the individual control mode.

  That is, in this case, the lighting controller 2 transmits the lighting command signal to the human sensor that outputs the received detection signal, for example, the control terminal 5A in the lighting area A having the same address as 6A via the transmission signal line 3. .

  For this purpose, the control terminal 5A turns on all or a predetermined number of lighting fixtures 8A, 8A,.

  When the lighting controller 8 receives the detection signal from the human sensor 6A having the same address within the required setting time counted by the timer while the lighting fixtures 8A, 8A,. It is determined that the timer has been turned on, the lighting is continued, the timer is cleared to the initial state, and the time measurement is started again.

  On the other hand, if the lighting controller 2 does not receive a detection signal from the human sensor 6A in the lighting area A within the set time of the timer, for example, while the lighting fixtures 8A, 8A,. It is determined that there is a light extinction (or dimming) command signal to the control terminal 5A in the lighting area A, and the lighting fixtures 8A, 8A,... That are lit are extinguished or dimmed to a predetermined brightness.

  Such lighting and turning-off control of the lighting fixtures 8A to 8F is performed for each of the lighting areas B to F for the other lighting areas B to F.

  Therefore, according to this individual control, the lighting control is performed for each lighting area A to F, which is the smallest area to be controlled, and only the lighting areas A to F in which people are present are lit. Power can be saved. In addition, this time zone is 9 hours, which is longer than other time zones, so that power saving can be promoted accordingly.

  In addition, in the time zone in which the control is performed in this individual control mode, 8: 00 to 17:00, since the amount of incident light such as sunlight entering the illumination areas A to F is relatively large, for example, the illumination area Even when the B lighting fixture 8B is turned on and the lighting fixtures 8A, 8C, 8E in the lighting areas A, C, E adjacent to the lighting area B are turned off, the difference in brightness is relatively small.

  For this reason, the uncomfortable feeling of the person working in the lighting area B is not necessarily large, and the visual environment is not bad, so it is possible to suppress a decrease in work efficiency.

  In the middle group control mode from 17:00 to 19:00 and the large group control mode from 19:00 to 24:00, the lighting fixtures 8A to 8F are detected by the detection signals of the human sensors 6A to 6F. The control to turn on or turn off the lighting fixtures 8A to 8F based on the time measured by the timer that is turned on and the detection signal is basically the same as the individual control mode. The target range is wider than individual control.

  That is, in the middle group control mode, for example, based on at least one detection signal of the human sensors 6A to 6C in one middle lighting group A to C, one middle lighting group A to C, that is, three illuminations It is different in that the lighting fixtures 8A to 8C in the areas A to C are all turned on or the required number is turned off. That is, in the middle group control mode, for example, for every three lighting areas A to C or D to F, all or a required number of lighting fixtures 8A to 8C and 8D to 8F are turned on and off.

  In the large group control mode, all illumination areas A to F, that is, six illumination areas A to F based on the detection signal of at least one human sensor of all illumination areas A to F, for example, 6A, are provided. The lighting fixtures 8 </ b> A to 8 </ b> F are characterized in that they are all or a required number of points, and that the lighting is controlled.

  Therefore, among these, according to the large group control mode, there is almost no daylight such as sunlight in both time periods of 17:00 to 19:00 and 19: 0 to 24:00. When the human sensor, for example, 6B detects the presence of a person, not only the lighting device 7B in the lighting area B having the same address as that of the human sensor 6B is turned on. Since the lighting fixtures 8A, 8C, and 8D to 8F in the three lighting areas D to F in the lower stage in FIG. Differences in brightness from the surrounding illumination areas A, C, D, and F can be substantially eliminated or reduced.

  For this reason, the uncomfortable feeling resulting from the brightness difference between the adjacent illumination areas A to F can be reduced, and the deterioration of the visual environment can be improved.

  In the middle and large group control modes, when at least one of the human sensors 6A to 6F detects the presence of a person, the illumination area including the human sensors 6A to 6F that detect the presence of the person. You may comprise so that AF may be lighted and its adjacent area.

  According to this, the brightness difference between any one of the illumination areas A to F where the person is present and the adjacent illumination area can be reduced, so that the visual environment around the occupant can be improved.

  FIG. 4 is an illuminance range control data table 10, which is recorded in the RAM of the lighting controller 2 in place of the time zone control data table 9 shown in FIG. 3, and the lighting fixtures 8A to 8F in the lighting areas A to F are shown. This is used when controlling turning on and off.

  That is, the illuminance range-specific control data table 10 is different from the time-zone-specific control data table 9 in that it estimates the amount of external light collected per day according to the time zone of the day. Based on the illuminance range detected by (not shown), there is a feature in that the individual control, medium and large group control are executed, and other than this, it is the same as the control according to the time zone, and the redundant description thereof. Is omitted.

  That is, in this illuminance range-specific control, since there is a large amount of external light such as daytime, when the illuminance detection value of the external light sensor is high, for example, when the illuminance detection value is 750 lx or more, each illumination area A to F The above-described individual control is performed, and when the amount of collected external light is small or absent, for example, the middle group control is performed in the case of 250 lx to 500 lx, and the large group control is performed in the case of 0 to 250 lx.

  Therefore, also in this case, substantially the same effect as the time zone control can be obtained. That is, in the case of a high illuminance range (750 lx or more) such as in the daytime, power control can be achieved because each lighting area A to F, which is the area with the smallest point-off control range, is individually controlled.

  Further, in the case of a low illuminance range (250 lx500 lx, 0 to 250 lx) such as at night, the middle and large group control is performed, so that the uncomfortable feeling caused by the difference in brightness between the adjacent illumination areas A to F is reduced, and the visual environment Can improve the deterioration.

  In the present invention, the lighting controller 2 may be provided with an adjacent area dimming means (not shown).

  FIG. 5 shows a flowchart of the adjacent area dimming means, which is recorded in the ROM. In the figure, reference numerals with numbers added to S indicate the steps of the flowchart.

  This adjacent area dimming means is used when the light output is reduced due to aging or dirt of a required lighting area, for example, the B lighting fixture 8B, or when the adjacent lighting area, for example, A is turned off, Even if the lighting fixture 8B in the lighting area B is turned on with all light at a dimming level of 100%, for example, when the illuminance of the required lighting area B cannot be controlled to reach a predetermined value, the lighting of the adjacent lighting area A It is a dimming means for controlling the illuminance of the illumination area B to a predetermined value by increasing the dimming degree of the fixture 8A step by step by a predetermined value.

  That is, as shown in the flowchart of FIG. 5, the adjacent area dimming unit of the lighting controller 2 first outputs a turn-off (dimming) command signal to the lighting area A when the timer detects, for example, the absence of a person in the lighting area A in S1. To the control terminal 5A.

  Then, in S2, the control terminal 5A that has received the turn-off command signal performs control to turn off the lighting fixtures 8A, 8A,... By the control terminal 5A in the lighting area A.

  Next, in S3, the detected illuminance value detected by the illuminance sensor 7B in the illumination area B is read. In next S4, the detected illuminance value is compared with the set illuminance value, and the difference between the two is eliminated. The dimming level to be calculated is calculated, and the dimming level signal is given to the control terminal 5B in the illumination area B in S5 to perform dimming control.

  After this dimming, the detected illuminance value detected by the illuminance sensor 7B in the illumination area B is read again in S6, and the new detected illuminance value after dimming is compared with the set illuminance value again in S7. , The lighting fixtures 8B, 8B,... In the lighting area B are supplied with a dimming signal having a dimming level of 100% to the control terminal 5B in the lighting area B.

  For this purpose, in S8, the control terminal 5B turns on the luminaires 8, 8B,... In the illumination area B all at a dimming level of 100%.

  Thereafter, in S9, the detected illuminance value of the illuminance sensor 7B in the illumination area B is read again, and when it is detected in S10 that there is a difference between the detected illuminance value and the set value, the adjacent illuminated area A that is not illuminated. Are lit at a dimming level of 10%, for example, to send a lighting dimming signal to the control terminal 5A in the lighting area A.

  As a result, the control terminal 5A turns on the lighting fixtures 8A, 8A,... In the illumination area A at 10% dimming level in S11.

  Thereafter, in S12, the detected illuminance value is read again from the illuminance sensor 7B in the illumination area B. In S13, the detected illuminance value is again compared with the set illuminance value in the illumination area B. Are again transmitted to the control terminal 5A in the adjacent lighting area A by lighting the lighting fixtures 8A, 8A,...

  Thereby, the lighting fixtures 8A, 8A,... Are now dimmed at a dimming level of 20% by the control terminal 5A in the adjacent lighting area A in S14.

  As described above, even when the illuminance of a required lighting area, for example, the B lighting fixtures 8B, 8B,... Does not reach the required set value even when all the lights are turned on at a dimming level of 100%, it is adjacent to the lighting area B. The lighting fixtures 8A, 8A,... In the lighting area A being turned off are gradually raised stepwise at a dimming level of 10%, for example, so that the set value of the required lighting area B is adjusted to the required set value. can do.

  And the wall switch 4 is arrange | positioned for each illumination area AF, or at least any one area etc., and the lighting fixture 8A-8F in the illumination area AF by the manual on / off operation is carried out. Can be forcibly turned on and off (dimmed) regardless of the presence or absence of the automatic control. For these automatic control and manual control, a post-priority is adopted in which the later operation is prioritized over the previous operation.

  In the above embodiment, the case where the timer is provided in the illumination controller 2 has been described. However, the present invention is not limited to this, and for example, the control terminals 5A, 5B to 5F and the human sensors 6A, 6B to 6F and illuminance sensors 7A, 7B to 7F may be provided. Moreover, the arrangement | positioning number of the said illumination areas AF and the lighting fixtures 8A-8F can be changed suitably. Further, any one of the illuminance sensors 7A to 7F may be shared as an external light sensor.

The figure which abbreviate | omits and shows the structure of the illumination control system which concerns on the 1st Embodiment of this invention. The schematic diagram which shows the example of arrangement | positioning of the several illumination area shown in FIG. The figure which shows the control data table classified by time zone currently recorded on the illumination controller shown in FIG. The figure which shows the control data table according to the illumination intensity range recorded on an illumination controller instead of the control data table according to time slot | zone shown in FIG. The flowchart of the program for control of the adjacent area light control means which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Lighting control system, 2 ... Lighting controller, 3 ... Transmission line, 4 ... Wall switch, 5A-5F ... Control terminal, 6A-6F ... Human sensor, 7A-7F ... Illuminance sensor, 8A-8F ... Lighting fixture , 9... Control data table by time zone, 10... Control data table by illuminance range.

Claims (4)

Lighting fixtures arranged in a plurality of lighting areas;
A human sensor for detecting the presence or absence of a person associated with each lighting area;
According to the detection result of the human sensor, while controlling the light output of the luminaire arranged in the illumination area in association with the human sensor, the range of the illumination area associated with the human sensor is changed. Control means for causing;
A lighting control system comprising: The illumination control system according to claim 1, wherein the control unit changes a range of an illumination area associated with the human sensor according to time. It has an illuminance sensor that detects illuminance,
The illumination control system according to claim 1, wherein the control unit changes a range of an illumination area associated with the human sensor according to an illuminance level detected by the illuminance sensor. The control means is disposed in the lighting area adjacent to the lighting area when the light output of the lighting fixture disposed in the required lighting area cannot be controlled so that the illuminance of the required lighting area reaches a predetermined value. A dimming means for controlling the illuminance of a required illumination area to be a predetermined value by controlling the light output of the luminaire,
The illumination control system according to any one of claims 1 to 3, further comprising:

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