JPH11144882A - Automatic luminance setting method in illumination control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic luminance setting method in an illumination control system requiring no operation of an adjustment operation circuit for correcting the effect of reflectivity by manually turning the volume even if external light affects at the time of installation. SOLUTION: This automatic luminance setting method is constituted of an luminaire 9, a luminance sensor 6 for measuring luminance in the illuminating space of the luminaire 9, and a controller 1 connected with the luminance sensor 6 and sending a light modulating control signal to the luminaire as to automatically keep the luminance constant in the illuminated space based on the measured value of the luminance sensor 6. The controller 1 measures the degree of the alteration of the measured value of the luminance sensor in relation to the output alteration of the luminance and estimates the reflectivity in the illuminated space from the difference from the measured value of the sensor to adjust the gain of the luminance sensor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an automatic illuminance setting method in a lighting control system.

[0002]

2. Description of the Related Art Conventionally, the output of a lighting fixture is controlled by using an illuminance sensor so that the illuminance on a surface to be illuminated is constant, as disclosed in Japanese Patent Application Laid-Open No. 58-53187 shown in FIG. There was an automatic dimmer. That is, the control device 3
The gain of the illuminance sent from the illuminance detector 31 to 0;
The comparison circuit 33 determines the magnitude of the reference signal created based on the adjustment operation circuit 32 for manually turning and adjusting the volume or the like, and based on the comparison result of the comparison circuit 33, the control signal generation circuit 34 By controlling the control circuit 35 and, as a result, dimming the lamp lighting device 36, control is performed so that the illuminance on the surface to be irradiated is constant.

As an apparatus for automatically adjusting an input signal from an illuminance sensor to an optimum value, there is a lighting control apparatus described in Japanese Patent Application No. 8-256488 shown in FIG. That is, when the controller 41 adjusts the gain of the illuminance sensor 42, the controller 41 presses a push switch or the like to operate the power supply switching unit 43 to switch to the adjustment mode. A predetermined dimming signal is output and the illuminance sensor 42
Is notified of the adjustment mode. The illuminance sensor 42 is
Upon receiving the notification of the adjustment mode, the gain of the illuminance sensor 42 is optimized by changing its own amplification factor so that the sensor output becomes a constant value.

[0004]

The conventional illumination control device is configured as described above, and is capable of automatic dimming by an illuminance sensor. However, because the reflectance of the floor of the room greatly differs depending on the installation location, the level of the sensor input with respect to the lamp output greatly differs from room to room,
When the control device was installed, it was necessary to manually operate an adjustment operation circuit for correcting the influence of the reflectance by manually turning a volume or the like. In addition, different conventional lighting control devices can be adjusted automatically by simply pressing a push switch, etc., but because of the effects of external light, lower the nighttime and blinds to reduce the effects of external light and adjust. Had to do. In addition, when installing in a plurality of areas and adjusting the volume by turning the volume, it is difficult to suppress the variation in illuminance between the areas, and it is necessary to use a measuring instrument such as an illuminometer.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and even when there is an influence of external light, an adjustment for correcting the influence of the reflectance by manually turning a volume or the like during installation. There is no need to operate the operation circuit, and when installed in multiple areas, there is no need to use devices such as illuminometers to make adjustments for each area. The purpose is to obtain an illuminance setting method.

[0006]

A lighting control system according to the present invention includes a lighting fixture, an illuminance sensor for measuring the illuminance of the lighting fixture and outputting a sensor signal, and automatically controlling an illumination space based on the sensor signal. A controller that outputs a dimming control signal to the lighting device so that the illuminance is constant.In the automatic illuminance setting method in the lighting control system, the controller corresponds to an output change of the dimming signal. The gain of the illuminance sensor is adjusted based on the rate of change in the output of the sensor signal.

[0007] Also, a lighting fixture, an illuminance sensor for measuring the illuminance of the lighting fixture and outputting a sensor signal, and the lighting fixture so that the illuminance of the irradiation space is automatically constant based on the sensor signal. A controller for outputting a dimming control signal, wherein the controller is configured to irradiate the illumination space estimated from a ratio of an output change of the sensor signal corresponding to an output change of the dimming signal. The gain of the illuminance sensor is adjusted based on the reflectance in the above.

Further, the controller has an adjustment mode switch for setting an adjustment mode for adjusting the gain of the illuminance sensor, and the controller adjusts the gain of the illuminance sensor when the adjustment mode switch is operated.

A lighting apparatus, an illuminance sensor for measuring the illuminance of the lighting apparatus and outputting a sensor signal, and the illuminating apparatus so that the illuminance of an irradiation space is automatically fixed based on the sensor signal. A controller that outputs a dimming control signal, in the automatic illuminance setting method in a lighting control system including the controller, when the sensor signal is larger than a predetermined value, after reducing the gain of the illuminance sensor, The gain of the illuminance sensor is adjusted based on the ratio of the output change of the sensor signal corresponding to the output change of the dimming signal.

Further, the controller is provided with an error display lamp for displaying a gain adjustment error when the gain of the illuminance sensor cannot be adjusted.

In addition, the controller manages the cause of the case where the gain adjustment of the illuminance sensor cannot be performed depending on the condition of the external light and the case where the illumination sensor or the wiring for the illuminance sensor is used. When the cause of the case where the gain adjustment cannot be performed is an external light condition, the gain of the illuminance sensor is set to the smallest gain among predetermined gains. The lighting device is controlled such that the dimming output is the maximum output among predetermined outputs without performing the lighting control.

[0012] Also, a lighting fixture, an illuminance sensor that measures the illuminance of the lighting fixture and outputs a sensor signal, and the lighting fixture so that the illuminance of the irradiation space is automatically fixed based on the sensor signal. A controller for outputting a dimming control signal, wherein the controller changes three or more types of outputs of the lighting fixture and responds to the output change of the dimming signal. A plurality of signal output change ratios are obtained, and an adjustment mode process for adjusting the gain of the illuminance sensor based on the change ratios is performed.

Further, the controller is provided with a gain adjustment display lamp for displaying that the gain of the illuminance sensor is being adjusted.

A plurality of lighting fixtures are arranged in a range in which the illuminance due to natural light entering the room can be regarded as substantially constant.
The controller controls each lighting control unit as a lighting control unit.

Further, the controller has means for notifying the other controller that the gain of the illuminance sensor is being adjusted.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a block diagram showing a lighting control system according to Embodiment 1 of the present invention, FIG. 2 is a flowchart showing an operation of an adjustment mode in a central processing unit 2 of the lighting control system shown in FIG. 1, and FIG. 6 is a graph for supplementing the operation of FIG.

In FIG. 1, reference numeral 1 denotes a controller for controlling the illumination space 9 so that the illumination intensity is constant by sending a dimming signal to the lighting equipment 9 based on the sensor signal from the illumination intensity sensor 6. Amplifying circuit 4 for amplifying the sensor signal to a predetermined level, a constant illuminance level setting circuit 3 for setting a target level, a sensor signal amplified by amplifying circuit 4, a microcomputer, etc. The level setting circuit 3 compares the control signal with a preset target level, changes the level of the control signal based on the comparison result, and outputs the control signal. The control signal from the central processing unit 2 controls the lighting fixture 9. It comprises a dimming signal output unit 5 for outputting a dimming signal.

The illuminance sensor 6 includes a light receiving circuit 8 that converts light from artificial light (not shown) such as a lighting fixture 9 and the sun into an electric signal, and an amplifying circuit 7 that amplifies the electric signal from the light receiving circuit 8. It is configured.

The operation of the automatic illuminance setting method in the illumination control system thus configured will be described with reference to FIGS. First, in the adjustment mode before the normal operation, the central processing unit 2 performs initial processing such as initial setting of a memory at startup (step 1). Next, as a gain adjustment process, first, the central processing unit 2 outputs a control signal corresponding to 100% dimming output, and the dimming signal output unit 5
Then, a dimming signal having a 100% dimming output is output (step 2).

At this time, the central processing unit 2 includes the illuminance sensor 6
Read the sensor signal from the controller and output it as 100% dimming output.
The time is used as a sensor signal (step 3). Next, the central processing unit 2 outputs a control signal corresponding to the 70% dimming output, and the dimming signal output unit 5 outputs a dimming signal having a 70% dimming output to the lighting fixture 9 (step). 4). At this time, the central processing unit 2 reads the sensor signal from the illuminance sensor 6 and uses it as the sensor signal at the time of the dimming output of 70% (step 5). The central processing unit 2 estimates the reflectance from the sensor signal when the dimming output is 100% and the sensor signal when the dimming signal is 70%.

The estimation of the reflectance will be described with reference to FIG. In the figure, the horizontal axis represents the level of the dimming signal, the vertical axis represents the level of the sensor signal, the solid line represents the characteristic before gain adjustment,
The two-dot chain line shows the characteristic after the gain is adjusted to remove the influence of daylight. The sensor signal corresponding to the dimming signal depends on the reflectance of the irradiation space, and the reflectance can be obtained from the ratio of the sensor signal change to the change of the dimming signal. In the present embodiment, the dimming signal is 100% and 70%.
% And the ratio of the difference between the output level of the sensor when the dimming signal is 100% and the output level of the sensor when the dimming signal is 70%, thereby obtaining an estimated value of the reflectance. The reason for using the difference in this way is that the reflectance can be obtained even under the influence of daylight (step 6).

Next, based on the estimation result of the reflectance, when there is no influence of daylight or the like, the sensor signal level is set to a predetermined sensor signal level when the dimming signal is 100% (the target level shown in FIG. 3). ), The central processing unit 2 sends a gain switching signal to the amplifier circuit 4 to perform gain switching (step 7). Then, after the gain switching is completed, the operation shifts to the normal mode operation, and the control of the constant illuminance is restarted.

The reflectivity and the gain and the like obtained based on the reflectivity are stored in the memory of the central processing unit 2. Also, in consideration of the case where the brightness of the lighting equipment is reduced during use, the brightness is initially set to be 30% higher than the required brightness, so that the output of the lighting equipment is not affected by daylight. Is generally 70%.

In the normal mode operation, the sensor signal sent from the sensor 6 by the controller is amplified to a predetermined level by the amplifier circuit 4 and sent to the central processing unit 2. In the central processing unit 2, the amplified sensor signal is compared with a target level preset by the constant illuminance level setting circuit 3, and based on the comparison result, if the sensor signal is small, the lighting fixture 9 is brightened. Then, the level of the control signal is increased. On the other hand, when the comparison result indicates that the sensor signal is large, the level of the control signal is reduced in order to reduce the lighting fixture 9. The dimming signal output unit 5 having received the control signal from the central processing unit 2 converts the control signal into a predetermined signal level for controlling the lighting fixture 9 and outputs a dimming signal to the lighting fixture 9. .

As described above, by switching the gain,
For example, when there is no influence of daylight, the output of the lighting
The sensor signal when trying to maintain the illuminance obtained in% is the level input to the central processing unit 2 after passing through the amplifier circuit 4, and is substantially constant regardless of the reflectance of the room. Therefore, even if there is the influence of external light, it is necessary to adjust the constant illuminance level setting circuit 3 to a predetermined level, and to adjust the reflectivity by turning the volume or the like at the installation location. Disappears.

In this embodiment, 100% and 70%
However, the measurement may be performed at any other two points.

Embodiment 2 FIG. In the present embodiment, a mode can be selected. FIG. 4 is a block diagram showing a lighting control system according to a second embodiment of the present invention.
FIG. 5 is a flowchart showing the operation of the controller of the lighting control system according to the second embodiment of the present invention.

In FIG. 4, the same or corresponding parts as those in FIG. 1 shown in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 10 denotes an adjustment mode switch for selecting between a normal mode operation and a gain adjustment mode operation.

The operation of the lighting control system thus configured will be described with reference to FIG. First, when the controller starts to operate by turning on the power, the central processing unit 2
Performs initial processing (step 1). Next, the same gain adjustment as in the first embodiment is performed (step 2). If there is no operation of the adjustment mode switch 10, the normal mode operation is repeated (step 3). When the adjustment mode switch 10 is operated, the same gain adjustment as in the first embodiment is performed, and after the adjustment, the mode is shifted to the normal mode (step 4). (The gain adjustment in step 4 is performed when the reflectivity changes due to a change in the room pattern or the like. (The gain adjustment in step 2 is always performed in the initial stage.

As described above, since the mode can be adjusted,
There is an effect that adjustment can be easily performed even when the reflectance changes due to room remodeling or the like.

Embodiment 3 In the present embodiment, in the adjustment mode, when the sensor signal of the illuminance sensor 6 is large in the adjustment mode, the gain is reduced before adjustment, and the system configuration is the same as that of the second embodiment. Yes, the operation will be described.

FIG. 6 is a flowchart showing the operation of the controller of the lighting control system according to Embodiment 3 of the present invention. The operation will be described with reference to FIG.

First, the memory is checked (step 1). When there is no gain data obtained from the reflectance (step 2) or when the adjustment mode switch 10 is operated (step 3), the central processing unit 2 determines the operation of the adjustment mode switch and switches to the adjustment mode. Then, the central processing unit 2 outputs a control signal corresponding to the 100% dimming output, and the dimming signal output unit 5 outputs a dimming signal having a 100% dimming output to the lighting fixture 9 (step 5). ).

At this time, the central processing unit 2 reads the sensor signal from the illuminance sensor 6 and outputs it to the dimming output 100.
% (Step 5). It is determined whether or not the sensor signal is below a predetermined level (step 6).
The central processing unit 2 sends a switching signal with a gain of 1/2 to the amplifier circuit 4 to reduce the gain to 1/2 (step 7).

After that, the central processing unit 2 reads the sensor signal from the illuminance sensor 6 again, and
A sensor signal at 0% is set (step 5). When the sensor signal becomes equal to or less than the predetermined level by the processing of steps 5, 6, 7, and 5, the central processing unit 2 outputs a control signal corresponding to the 70% dimming output,
The dimming signal output unit 5 outputs a dimming signal having a 70% dimming output to the lighting fixture 9 (step 8).

At this time, the central processing unit 2 includes the illuminance sensor 6
Is read, and this is used as the sensor signal when the dimming output is 70% (step 9). Central processing unit 2
Is the sensor signal when the dimming output is 100% and the dimming signal is 70%
The reflectance is estimated from the sensor signal at the time (step 8). Based on the estimation result of the reflectance, when there is no influence by daylight or the like, the central processing unit 2 controls the amplifying circuit 4 so that the level of the sensor signal becomes a predetermined level when the dimming signal is 100%. A gain switching signal is sent to perform gain switching (step 11).

As described above, when the influence of daylight is large and the input of the illuminance sensor 6 is large, the central processing is performed by switching the gain so that the sensor signal at the time of 100% dimming becomes equal to or less than a predetermined level. It is possible to prevent the input of the device 2 from being saturated. For example, in general, when reading a sensor signal using an A / D input terminal of a microcomputer, the input terminal is saturated with a power supply voltage. If the sensor signal at the time of 100% dimming exceeds the power supply voltage of the microcomputer, correct processing cannot be performed. Therefore, by adjusting and reading the gain so that the sensor signal becomes equal to or lower than a predetermined level, it is possible to prevent a problem due to saturation.

In this embodiment, the gain is set to 1/2, but if the sensor signal exceeds the upper limit of the AD input, the central processing unit cannot read the signal. Therefore, the gain may be set to 1/3.

Embodiment 4 FIG. 7 is a block diagram showing a lighting control system according to a fourth embodiment of the present invention, and FIG. 8 is a controller of the lighting control system according to the fourth embodiment of the present invention. 6 is a flowchart showing the operation of the first embodiment.

In FIG. 7, the same or corresponding parts as those in FIG. 4 shown in the second embodiment are denoted by the same reference numerals, and description thereof will be omitted. An error display lamp 11 displays an error such as gain adjustment.

The operation of the illumination control system thus configured will be described with reference to FIG. First, the adjustment mode switch 1
When 0 is operated, the central processing unit 2 judges the operation of the adjustment mode switch and switches to the adjustment mode (step 1). Then, the central processing unit 2 outputs a control signal corresponding to the 100% dimming output, and the dimming signal output unit 5 outputs a dimming signal having a 100% dimming output to the lighting fixture 9 (step 2). ). At this time, the central processing unit 2 reads the sensor signal from the illuminance sensor 6 and
A sensor signal at 0% is set (step 3). Next, the central processing unit 2 outputs a control signal corresponding to the 70% dimming output, and the dimming signal output unit 5 outputs a dimming signal having a 70% dimming output to the lighting fixture 9 (step). 4).

At this time, the central processing unit 2 includes the illuminance sensor 6
And reads it as a sensor signal when the dimming output is 70% (step 5). Central processing unit 2
Is the sensor signal when the dimming output is 100% and the dimming signal is 70%
The reflectance is estimated from the sensor signal at the time (step 6). Next, for example, an error is determined such that the sensor signal when the dimming output is 100% and the sensor signal when the dimming output is 70% are both 0 (step 7). If there is an error,
The central processing unit 2 turns on the error display lamp 11 and terminates the adjustment mode (step 8). If there is no error, the adjustment mode is ended after switching the gain (step 9).

As described above, by providing the lamp for displaying the gain adjustment error and displaying when the gain of the illuminance sensor cannot be adjusted, the user can easily understand the cause of the improper operation. .

Embodiment 5 FIG. In the present embodiment, when an error is displayed, the cause of the error is determined and control is performed according to the cause of the error. The system configuration is the same as that of the fourth embodiment, and the operation will be described. .

FIG. 9 is a flowchart showing the operation of the controller of the lighting control system according to Embodiment 5 of the present invention. The operation will be described with reference to FIG.

First, when the adjustment mode switch 10 is operated, the central processing unit 2 judges the operation of the adjustment mode switch and switches to the adjustment mode (step 1). Then
The central processing unit 2 outputs a control signal corresponding to 100% dimming output, and the dimming signal output unit 5
A dimming signal having a dimming output of 00% is output (step 2).
At this time, the central processing unit 2 reads the sensor signal from the illuminance sensor 6 and uses it as the sensor signal when the dimming output is 100% (step 3). Next, the central processing unit 2
A control signal corresponding to the 0% dimming output is output, and the dimming signal output unit 5 outputs a dimming signal having a 70% dimming output to the lighting fixture 9 (step 4).

At this time, the central processing unit 2 reads the sensor signal from the illuminance sensor 6 and converts it into a dimming output of 70%.
The time is used as a sensor signal (step 5). Central processing unit 2
Is the sensor signal when the dimming output is 100% and the dimming signal is 70%
The reflectance is estimated from the sensor signal at the time (step 6). Next, for example, an error is determined such that the sensor signal when the dimming output is 100% and the sensor signal when the dimming output is 70% are both 0 (step 7). If there is an error, the central processing unit 2 turns on the error display lamp 11 (step 8).

Next, the error is caused by, for example, a wiring in which the sensor signal does not change even if the dimming output is changed, and the error is caused by the fact that the external light is too strong to properly estimate the reflectance. It is estimated whether the condition is outside light (step 9). In addition,
If the external light is too strong to properly estimate the reflectance,
Even when the dimming output is 70%, the sensor signal may exceed 5V.

If the wiring has an error, the central processing unit 2
A control signal cannot be output because the signal of the illuminance sensor 6 cannot be read. However, as an exception, a control signal corresponding to 100% dimming output is output, and the dimming signal output unit 5 adjusts the lighting fixture 9 to 100%. Outputs dimming signal of optical output. Further, in this case, the operation in the normal mode cannot be performed correctly, so that the operation is not shifted to the operation in the normal mode (step 1).
0).

If the reflectance cannot be estimated correctly due to the external light conditions, the reflectance is temporarily changed to the smallest gain among the predetermined gains assuming the smallest reflectance (step 11). Is performed (step 11). Switching to the lowest gain means, for example, 1 time, 3 times, 5 times, and 3 times.
In the case of a stage circuit, it is a circuit of 1 time.

As described above, by dividing the cause of the error according to the wiring relationship and the external light condition, it is possible to turn on all the light when there is a wiring defect, and to perform the operation when the error occurs under the external light condition. Although the accuracy decreases, it is possible to provisionally control the constant illuminance.

Embodiment 6 FIG. This embodiment is to adjust the gain of the illuminance sensor by changing the output of the luminaire by two or more types, obtaining a plurality of ratios of the change of the illuminance sensor to the output change of the luminaire, estimating the reflectance, and adjusting the gain. Is the same as FIG. 1 of the first embodiment, and the operation will be described.

FIG. 10 is a flowchart showing the operation of the controller of the lighting control system according to Embodiment 6 of the present invention. The operation will be described with reference to FIG. First, when the adjustment mode switch 10 is operated, the central processing unit 2 determines the operation of the adjustment mode switch and switches to the adjustment mode (step 1). Then, the central processing unit 2
A control signal corresponding to the 0% dimming output is output, and the dimming signal output unit 5 outputs a dimming signal having a 100% dimming output to the lighting fixture 9. The central processing unit 2 includes an illuminance sensor 6
Read the sensor signal from the controller and output it as 100% dimming output.
It is a sensor signal at the time.

Next, the central processing unit 2 outputs a control signal corresponding to the 90% dimming output, and the dimming signal output unit 5 outputs a dimming signal having a 90% dimming output to the luminaire 9. I do.
Further, the central processing unit 2 reads a sensor signal from the illuminance sensor 6 and uses it as a sensor signal at the time of a dimming output of 90%. The sensor signal at the time of 100% dimming output and 90%
The reflectance is estimated from the sensor signal at the time of dimming output (step 2). Next, the central processing unit 2 similarly controls the dimming output 8
The sensor signal at 0% is read, and the reflectance is estimated together with the sensor voltage at 90% dimming output (step 3).
The average of the two reflectances is obtained (step 4), and the central processing unit 2 sends a gain switching signal to the amplifier circuit 4 based on the average reflectance to switch the gain (step 5).

As described above, the controller changes the output of the lighting fixture by two or more types, measures the input of the illuminance sensor for each output, obtains a plurality of degrees of change in the measured value, and calculates a plurality of degrees of change in the measured values. By providing an adjustment mode for estimating the reflectance in the irradiation space and adjusting the gain of the illuminance sensor, the accuracy of the reflectance can be further improved.

In this embodiment, the case where two reflectances are estimated and the average is used for control is described. However, the present invention is not limited to this, and an average of three or more is adopted. Alternatively, a central value may be adopted.

Embodiment 7 FIG. In the present embodiment, display during gain adjustment is performed. FIG. 11 is a block diagram showing an illumination control system according to Embodiment 7 of the present invention.
15 is a flowchart showing the operation of the controller of the lighting control system according to Embodiment 7 of the present invention.

In FIG. 4, the same or corresponding parts as those in FIG. 1 shown in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 12 denotes a gain-adjustment display lamp for displaying a display indicating that the gain is being adjusted.

The operation of the illumination control system thus configured will be described with reference to FIG. First, when the adjustment mode switch 10 is operated, the central processing unit 2 determines the operation of the adjustment mode switch and switches to the adjustment mode (step 1). Then, the central processing unit 2 turns on the gain adjusting display lamp 12 (step 2). Next, the central processing unit 2 adjusts the gain (Step 3). When the gain adjustment is completed, the central processing unit 2 turns off the gain adjusting display lamp and performs the operation in the normal mode (step 4).

As described above, the LED for display during gain adjustment is provided.
Is provided and the display is performed during the gain adjustment of the illuminance sensor, so that the convenience of the user can be improved.

Embodiment 8 FIG. In the present embodiment, an illumination control unit is determined based on a range in which the illuminance by natural light can be regarded as substantially constant. FIG. 13 is a layout diagram of an illumination control system according to an eighth embodiment of the present invention.

In the figure, reference numeral 9 denotes luminaires arranged in eight rows each of five units so as to be parallel to the window 13. Reference numeral 17 denotes luminaires 9 arranged in two rows, two rows from the window side in consideration of the illuminance by natural light. A control unit 6 divided into three in four rows is an illuminance sensor provided at a position that can be regarded as the center of each control unit 17 for each control unit 17. The controller 1 (not shown) is installed on a distribution board or the like corresponding to each illuminance sensor 6.

The lighting control system having such a configuration is used in a room where natural light from the sun or the like enters through a window.
A control unit 17 for which the illuminance by natural light can be considered to be substantially constant is determined, and the controller 1 controls each of these illumination control units 17.

As described above, since the controller 1 automatically adjusts the gain for each control unit, it is not necessary to adjust the volume for each area, and the convenience of the user can be improved. Since a plurality of areas are automatically adjusted, unlike a case where the user adjusts the volume, variations among devices can be reduced without using a device such as an illuminometer.

Embodiment 9 FIG. In the present embodiment, gain adjustment is not performed while another controller is performing gain adjustment. FIG. 14 is a block diagram showing an illumination control system according to Embodiment 9 of the present invention, and FIG. 33 is a flowchart showing the operation of the controller of the lighting control system according to the ninth embodiment.

In FIG. 14, the same or corresponding parts as those in FIG. 11 shown in the seventh embodiment are denoted by the same reference numerals.
Description is omitted. 16a and 16b are controllers which are connected by the transmission line 15. Each of the controllers 16a and 16b has the transmission / reception circuit 14, and has a function of transmitting information on the current gain adjustment and receiving information on the current gain adjustment sent from another controller.

The operation of the illumination control system thus configured will be described with reference to FIG. First, when the adjustment mode switch 10 is operated, the central processing unit 2 determines the operation of the adjustment mode switch and switches to the adjustment mode (step 1). Then, the central processing unit 2 checks whether the gain of another device is being adjusted, and if it is being adjusted, proceeds to the normal mode without performing the gain adjustment (step 2). If the other devices are not adjusting the gain, the central processing unit 2 transmits / receives the transmission / reception circuit 1
By using the transmission line 4 to perform transmission while the gain is being adjusted to the transmission line 15, the other controller is notified that the gain is being adjusted (step 3).

When the notification is made, the central processing unit 2
Performs gain adjustment (step 4). When the gain adjustment is completed, the central processing unit 2 transmits the gain adjustment end to the transmission line 15 using the transmission / reception circuit 14,
The other controller is notified that the gain adjustment is completed (step 5).

As described above, the controller is provided with the function of notifying the other controller that the gain is being adjusted to the other controller, and when the information on the gain adjustment is received from the other controller, the controller on the receiving side adjusts the gain. Is not performed, it is possible to prevent the influence of other areas at the time of adjusting the gain and improve the accuracy of the adjustment.

Although the controllers 1 and 16a and the illuminance sensor 6 have been described as independent devices, the present invention is not limited to this, and may be configured as an integrated device.

Further, the notification during the gain adjustment of the controller 16 has been described in the case where the notification is made directly between the controllers 16. However, the present invention is not limited to this case. It goes without saying that the same effect can be obtained even if the notification is made via the terminal.

Also, the case where the communication of the controller 16 is performed using the transmission line 15 has been described, but the present invention is not limited to this, and the communication is performed using a wireless communication method such as infrared rays. Needless to say, the same effect can be obtained.

[0073]

Since the present invention is configured as described above, it has the following effects.

A lighting control system according to the present invention includes a lighting fixture, an illuminance sensor that measures the illuminance of the lighting fixture and outputs a sensor signal, and automatically maintains the illuminance of an irradiation space constant based on the sensor signal. And a controller that outputs a dimming control signal to the lighting fixture.In the automatic illuminance setting method in the lighting control system, the controller changes an output change of the sensor signal corresponding to an output change of the dimming signal. Since the gain of the illuminance sensor is adjusted based on the ratio, even if there is an influence of external light, at the time of installation, the adjustment operation circuit for manually turning the volume and the like to correct the influence of the reflectance is operated. There is an effect that there is no need to do this.

Further, the lighting fixture, an illuminance sensor for measuring the illuminance of the lighting fixture and outputting a sensor signal, and the lighting fixture so that the illuminance of the irradiation space is automatically constant based on the sensor signal. A controller for outputting a dimming control signal, wherein the controller is configured to irradiate the illumination space estimated from a ratio of an output change of the sensor signal corresponding to an output change of the dimming signal. Since the gain of the illuminance sensor is adjusted based on the reflectance in the above, even if there is an influence of external light, at the time of installation, an adjustment operation circuit for manually turning the volume or the like to correct the effect of the reflectance is provided. This has the effect of eliminating the need for operation.

Further, the controller is provided with an adjustment mode switch for setting an adjustment mode for adjusting the gain of the illuminance sensor. When the controller operates the adjustment mode switch, the controller adjusts the gain of the illuminance sensor.
There is an effect that adjustment can be easily performed even when the room is redesigned.

Further, the lighting fixture, an illuminance sensor for measuring the illuminance of the lighting fixture and outputting a sensor signal, and the lighting fixture so that the illuminance of the irradiation space is automatically constant based on the sensor signal. A controller that outputs a dimming control signal, in the automatic illuminance setting method in a lighting control system including the controller, when the sensor signal is larger than a predetermined value, after reducing the gain of the illuminance sensor, Since the gain of the illuminance sensor is adjusted based on the ratio of the output change of the sensor signal corresponding to the output change of the dimming signal, the gain can be automatically adjusted even when the influence of daylight is large. There is an effect that can be.

Further, since the controller is provided with an error display lamp for displaying a gain adjustment error when the gain of the illuminance sensor cannot be adjusted, it is possible to provide a device that allows the user to easily understand the cause of the improper operation. is there.

The controller manages the cases where the gain of the illuminance sensor cannot be adjusted depending on the condition of the external light and the case of wiring with the lighting fixture or the illuminance sensor. When the cause of the case where the gain adjustment cannot be performed is an external light condition, the gain of the illuminance sensor is set to the smallest gain among predetermined gains. Since the lighting device is controlled with the dimming output being the maximum output among the predetermined outputs without performing the above operation, there is an effect of reducing problems for the user when a problem occurs.

Further, the luminaire, an illuminance sensor for measuring the illuminance of the luminaire and outputting a sensor signal, and the luminaire so that the illuminance of the irradiation space is automatically constant based on the sensor signal. A controller for outputting a dimming control signal, wherein the controller changes three or more types of outputs of the lighting fixture and responds to the output change of the dimming signal. Since a plurality of signal output change ratios are obtained and the gain of the illuminance sensor is adjusted based on these change ratios, there is an effect that the accuracy of the reflectance is further improved.

Further, since the controller is provided with a gain adjustment display lamp for displaying that the gain of the illuminance sensor is being adjusted, there is an effect that user convenience is improved.

Further, a plurality of lighting fixtures are arranged in a range where the illuminance due to natural light entering the room can be regarded as substantially constant.
Since the controller is used as a lighting control unit and the controller performs control for each lighting control unit, there is no need to perform adjustment by volume or the like for each area, and this has the effect of improving user convenience. In addition, since the adjustment is automatically performed for a plurality of areas, there is an effect that, unlike the case where the user adjusts the volume, variation between the devices can be reduced without using a device such as an illuminometer.

Since the controller is provided with a means for notifying the other controller that the gain of the illuminance sensor is being adjusted, the effect of other areas is prevented when the gain is adjusted, thereby improving the accuracy of the adjustment. This has the effect.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a lighting control system according to a first embodiment of the present invention.

FIG. 2 is a flowchart of the lighting control system shown in FIG.

FIG. 3 is a graph for supplementing the operation of FIG. 2;

FIG. 4 is a block diagram showing a lighting control system according to a second embodiment of the present invention.

FIG. 5 is a flowchart of a lighting control system according to a second embodiment of the present invention.

FIG. 6 is a flowchart of a lighting control system according to Embodiment 3 of the present invention.

FIG. 7 is a block diagram showing a lighting control system according to Embodiment 4 of the present invention.

FIG. 8 is a flowchart of a lighting control system according to Embodiment 4 of the present invention.

FIG. 9 is a flowchart of a lighting control system according to Embodiment 5 of the present invention.

FIG. 10 is a flowchart of a lighting control system according to Embodiment 6 of the present invention.

FIG. 11 is a block diagram showing a lighting control system according to a seventh embodiment of the present invention.

FIG. 12 is a flowchart of a lighting control system according to a seventh embodiment of the present invention.

FIG. 13 is a layout diagram of a lighting control system according to an eighth embodiment of the present invention.

FIG. 14 is a block diagram showing a lighting control system according to Embodiment 9 of the present invention.

FIG. 15 is a flowchart of a lighting control system according to Embodiment 9 of the present invention.

FIG. 16 is a block diagram showing a conventional automatic light control device.

FIG. 17 is a block diagram showing a conventional lighting control device.

[Explanation of symbols]

Reference Signs List 1 controller, 2 central processing unit, 3 constant illuminance level setting circuit, 4 amplifier circuit, 5 dimming signal output section, 6
Illuminance sensor, 7 amplifier circuit, 8 light receiving circuit, 9 lighting fixture, 10 adjustment mode switch, 11 error display lamp, 12 gain adjustment display lamp, 13 window, 14
Transmission / reception circuit, 15 transmission line, 16 controller, 1
7 lighting control unit, 30 control device, 31 illuminance detector, 32 adjustment operation circuit, 33 comparison circuit, 34 control signal generation circuit, 35 phase control circuit, 36 lamp lighting device, 41 controller, 42 illuminance sensor, 43 power switch Department.

Claims (10)

[Claims] 1. An illuminator, an illuminance sensor that measures the illuminance of the illuminator and outputs a sensor signal, and the illuminator so that the illuminance of an irradiation space automatically becomes constant based on the sensor signal. A controller for outputting a dimming control signal, wherein the controller controls the illuminance based on a ratio of an output change of the sensor signal corresponding to an output change of the dimming signal. An automatic illuminance setting method in a lighting control system characterized by adjusting a sensor gain. 2. An illuminator, an illuminance sensor for measuring the illuminance of the illuminator and outputting a sensor signal, and the illuminator so that the illuminance of the irradiation space is automatically constant based on the sensor signal. And a controller that outputs a dimming control signal. In the automatic illuminance setting method in the lighting control system, the controller is configured to irradiate the illumination space estimated from a ratio of an output change of the sensor signal corresponding to an output change of the dimming signal. An automatic illuminance setting method in an illumination control system, wherein a gain of the illuminance sensor is adjusted based on a reflectance in the illumination control system. 3. The controller includes an adjustment mode switch for setting an adjustment mode for adjusting a gain of the illuminance sensor,
3. The automatic illuminance setting method in the illumination control system according to claim 1, wherein the controller adjusts a gain of the illuminance sensor when the controller operates the adjustment mode switch. 4. An illuminator, an illuminance sensor that measures the illuminance of the illuminator and outputs a sensor signal, and the illuminator so that the illuminance of the illumination space is automatically constant based on the sensor signal. A controller that outputs a dimming control signal, in the automatic illuminance setting method in the illumination control system, wherein the controller reduces the gain of the illuminance sensor when the sensor signal is larger than a predetermined value, An automatic illuminance setting method in an illumination control system, wherein a gain of the illuminance sensor is adjusted based on a ratio of an output change of the sensor signal corresponding to an output change of a dimming signal. 5. The illumination control according to claim 1, further comprising an error display lamp for displaying a gain adjustment error when the gain of the illuminance sensor cannot be adjusted by the controller. Automatic illumination setting method in the system. 6. The controller manages the cause of the case where the gain of the illuminance sensor cannot be adjusted depending on the condition of the external light and the case of the illumination device or the wiring to the illuminance sensor. When the cause of the case where the gain adjustment cannot be performed is an external light condition, the gain of the illuminance sensor is set to the smallest gain among predetermined gains. 6. The automatic illuminance setting in the lighting control system according to claim 1, wherein the luminaire is controlled by setting a dimming output as a maximum output among predetermined outputs without performing the lighting control. method. 7. An illuminator, an illuminance sensor that measures illuminance of the illuminator and outputs a sensor signal, and the illuminator is configured to automatically maintain a constant illuminance in an irradiation space based on the sensor signal. An automatic illuminance setting method in a lighting control system including a controller that outputs a dimming control signal, wherein the controller changes at least three types of outputs of the lighting fixture, and the sensor corresponding to an output change of the dimming signal. An automatic illuminance setting method in an illumination control system, wherein a plurality of signal output change ratios are obtained, and a gain of the illuminance sensor is adjusted based on the change ratios. 8. The automatic lighting control system according to claim 1, further comprising a gain adjustment display lamp for displaying that the gain of the illuminance sensor is being adjusted in the controller. Illuminance setting method. 9. A method in which a plurality of luminaires are arranged in a range in which the illuminance due to natural light entering the room can be regarded as substantially constant, and are used as a control unit of the light, and the controller performs control for each control unit of the light. Claims 1 to 8 as features.
An automatic illuminance setting method in the lighting control system according to any one of the above. 10. The controller includes means for notifying the other controller that the gain of the illuminance sensor is being adjusted to another controller, and upon receiving information on the gain being adjusted from the other controller, the controller on the receiving side adjusts the gain. 10. The automatic illuminance setting method in the illumination control system according to claim 1, wherein the automatic illuminance setting is not performed.