JPH10275685A - Illumination control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control illumination without increase in traffic of a transmission line by comparing the specified illumination intensity reference value with a measured value with a terminal unit, controlling a luminaire based on the difference, and controlling illumination based on manual setting when a signal from a main control device is judged as manual. SOLUTION: When an illumination control data is inputted through a receiving circuit 12, a manual control part 13 judges whether it is manual or not, and when manual switching is detected, its information is sent to a central processing unit 15. When an illumination control level based on manual setting is detected, its level is sent to the central processing unit 15. During automatic illumination control, the central processing unit 15 inputs the measured value of an illumination sensor 54 through an illumination intensity measuring part 14, compares it with a setting value (a reference value) of a terminal unit 11, and outputs a controlled illumination control signal based on the result obtained. An output circuit 16 generates an illumination control signal based on the controlled illumination control signal from the central processing unit 15 or an illumination control setting signal, and outputs the signal to a luminaire 55.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control system for controlling dimming of a lighting fixture.

[0002]

2. Description of the Related Art Conventionally, an apparatus for remotely controlling the illuminance of a lighting apparatus is disclosed in, for example, JP-A-8-45672. FIG. 10 is a system block diagram using the dimming device of the lighting apparatus disclosed in the publication, FIG. 11 is a flowchart showing the operation of a terminal as a dimming device, and FIG. 12 is a sequence diagram in this system.

[0003] A master unit 51 is connected to a terminal device 52 and a switch unit 53 of a light control device via a transmission line 50, respectively.
It is configured to transmit and receive control data and monitoring data to control the terminal device 52. The terminal device 52 is connected to an illuminance sensor 54, generates a control signal based on a detection value of the illuminance sensor 54, and performs dimming control on the lighting device 55. Also, the terminal device 52 is configured as shown in FIG.
As shown in the figure, the current illuminance value sent from the illuminance sensor 54 is compared with the target illuminance value sent from the master unit 51, and a dimming signal is output to the lighting fixture 55 so that the current illuminance value becomes equal to the target illuminance value. doing.

In the illumination control device thus configured, when increasing the illuminance, the operator operates the UP portion of the switch 53 as shown in FIG. 12 to notify that the UP operation has been performed. In this case, the parent device 51 sets the switch 5
3 and transmits the UP level data to the corresponding terminal device 52. The terminal device 52 that has received the UP level data increases the target illuminance value based on the data, and controls the illuminator 55 to control the illuminance UP.

[0005]

In the above-mentioned conventional lighting control device, automatic light control by the illuminance sensor 54 and light control by remote control can be performed. However, when it is desired to control a plurality of circuits with the same output, each terminal 52
Transmits the output state to the parent device 51 as the current level data, and the parent device 51 manages the current level data.
2 to generate the UP level data, and
Is sending to. In such a case, there is a problem that the current level data is frequently transmitted to the transmission path 50 and the traffic increases.

Further, since the illuminance sensor 54 is required for each terminal 52, there is a problem that the number of illuminance sensors 54 increases when the number of terminals 52 increases.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and even in a system having a plurality of terminals, the number of illuminance sensors is not increased, and the traffic on the transmission line is increased. It is an object of the present invention to provide a lighting control system capable of controlling the dimming of a lighting fixture without any need.

[0008]

The lighting control system according to the present invention comprises a main control device for transmitting a signal based on a manual operation, a lighting device connected thereto, and a terminal having an illuminance sensor. The terminal device compares the measured illuminance sensor value with a predetermined illuminance as a reference value, controls dimming of the luminaire in accordance with the difference, and performs manual switching when a signal from the main control device is received. Determine whether
At the time of manual switching, a dimming control unit for setting dimming of the lighting fixture based on the manual setting is provided.

A main control unit for transmitting a signal based on a manual operation, a first terminal connected to a lighting device and having an illuminance sensor, and a second terminal connected to the lighting device. The first terminal device compares the measured illuminance sensor value with a predetermined illuminance as a reference value, controls dimming of the luminaire in accordance with the difference, and transmits the control dimming as data. When the signal from the main controller is received, it is determined whether or not manual switching is performed. When manual switching is performed, dimming of the lighting fixture is set based on the manual setting, and the set dimming is performed as data. The second terminal includes a dimming control unit that controls dimming of the lighting fixture based on the data.

The dimming control section of the first terminal transmits the dimming when the automatic dimming changes by a predetermined value or more to the second terminal as data, and when the dimming is manual, the dimming by manual setting is performed. Unless the light changes, the set dimming is transmitted as data to the second terminal every time a predetermined time elapses.

Further, a plurality of the first and second terminals are provided as a set, and the main controller transmits a signal based on a manual operation to each of the first terminals. .

The main controller has a transmission switching unit for transmitting a signal based on a manual operation to the second terminal when a failure of the first terminal is detected.

Further, the main control device transmits a signal requesting a model determination to the terminal, and determines either the first terminal or the second terminal according to a response to the signal. And a dimming control unit of the first and second terminals determines presence or absence of an illuminance sensor when the request signal is received, and performs the main control based on a result thereof. It is responsive to the device.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a block diagram of a lighting control system according to a first embodiment of the present invention, FIG. 2 is a flowchart showing an operation of a manual control unit of the terminal according to the first embodiment, and FIG. 3 is a central processing unit of the terminal. 6 is a flowchart showing the operation of the first embodiment.

In FIG. 1, reference numeral 1 denotes a main controller,
Is connected to the terminal device 11 through the
It has an operation unit for switching the dimming to manual, an operation unit for setting the dimming level, and the like, and transmits the dimming control data based on the setting of each operation unit. Reference numeral 11 denotes a terminal, which receives a receiving circuit 12 for receiving the dimming control data transmitted from the main control device 1, a manual control unit 13, and the detected illuminance of the illuminance sensor 54, and performs sensor measurement based on the detected illuminance. It comprises an illuminance measuring unit 14 for outputting a value, a central processing unit 15, and an output circuit 16, for example, 4 to 10 units.
The lighting devices 55 are controlled by the same light control. The manual control unit 13, the illuminance measurement unit 14, and the central processing unit 15 described above.
Constitutes the dimming control unit according to the present invention.

When the dimming control data is input via the receiving circuit 12, the manual control section 13 determines whether or not manual switching has been performed. When manual switching has been detected, the manual processing section 13 notifies the central processing section 15 of the fact. When a dimming level based on the manual setting is detected, the level is notified, and when automatic switching due to manual release is detected, the fact is notified.

The central processing unit 15 inputs a sensor measurement value through the illuminance measurement unit 14 for automatic light control, for example.
When comparing with a set value (reference value) by setting a volume (not shown) provided in the terminal device 11, outputting a dimming control signal based on the comparison result, and receiving a notification of manual switching Outputs a dimming setting signal based on the dimming level input via the manual control unit 13.
Further, when a notification of manual release is received, a sensor measurement value is input and control of automatic light control is started. Output circuit 16
Generates a dimming signal based on the dimming control signal or the dimming setting signal from the central processing unit 15 and outputs the signal to the lighting fixture 55.

The operation of the terminal of the lighting control system configured as described above will be described with reference to FIGS. For convenience of explanation of the operation, it is assumed that the terminal device is executing automatic light control. In this case, the manual control unit 13 of the terminal device 11 determines whether or not the dimming control data is input as shown in FIG. 2 (S1), and performs this operation until the input of the dimming control data is detected. repeat. On the other hand, the central processing unit 15 inputs the sensor measurement value of the illuminance sensor 54 via the illuminance measurement unit 14 because there is no notification of manual switching from the manual control unit 13 and compares the sensor measurement value with a preset setting value. (S11, S12, S13), when the sensor measured value is smaller than the set value (dark), the illuminance UP control is started (S14), and when the sensor measured value is equal to the set value, the illuminance maintaining control is started (S15). If the sensor measured value is larger than the set value (bright), the illuminance DOWN control is started (S16), and a dimming control signal is output to the output circuit 16 according to each control (S17). Then, it is determined again whether or not the manual switching has been notified (S1).
1) Repeat this series of operations. At this time, the output circuit 16 generates a dimming signal based on the input of the dimming control signal from the central processing unit 15 and outputs it to the lighting fixture 55.

When the manual control section 13 detects the input of the dimming control data by the manual operation of the main controller 1 during the execution of the automatic dimming (S1), it determines whether or not the manual switching is performed (S2). If the manual switching is not detected, it is determined whether or not the automatic switching is performed by canceling the manual operation (S6). If the manual switching is detected, the fact is notified to the central processing unit 15 (S3), and the dimming level is determined. It is determined whether or not is input (S4).
If the light control level is not set by manual operation, the input of light control data is detected again (S
1) When the dimming level is detected from the input data, the dimming level is notified to the central processing unit 15 (S5).

Upon receiving the manual switching notification, the central processing unit 15 switches the dimming from automatic to manual and determines whether or not a dimming level has been input (S11). If the input of the dimming level cannot be confirmed, it is determined whether or not the manual switching has been canceled (S18). If the input of the dimming level is confirmed, the dimming setting signal corresponding to the dimming level is output. The output is output to the output circuit 16 (S19), and the process returns to step S11. When the manual switching is continued, the dimming of the lighting fixture 55 is set to follow the change of the dimming level due to the manual operation.

As described above, when the dimming level for changing the illuminance is set by the main controller 1, the central processing unit 15 of the terminal device 11 sets the dimming of the lighting fixture 55 based on the dimming level. Therefore, the parent device 51 and the terminal device 52
The dimming of the lighting fixture 55 can be set without transmitting / receiving data between the transmission line 2 and the transmission line 2, and an increase in traffic on the transmission line 2 can be suppressed.

In the first embodiment, the manual control unit 13 and the illuminance measurement unit 14 which are the main components of the terminal device 11 are used.
Although the central processing unit 15 and the central processing unit 15 are respectively illustrated as being independent components, the control of each unit may be controlled by, for example, one microcomputer. Also, the main control device 1 and the terminal device 11 have been described one-to-one,
The same effect is obtained even if two or more terminals 11 are installed.

Embodiment 2 FIG. FIG. 4 is a block diagram of a lighting control system according to a second embodiment of the present invention, and FIG. 5 is a sequence diagram in the lighting control system of the present embodiment.
The description of the same or corresponding portions as those of the first embodiment described with reference to FIG. 1 will be omitted.

In FIG. 1, reference numeral 21 denotes a main terminal, which comprises a transmitting / receiving circuit 22, a manual control unit 23, an illuminance measuring unit 24 to which an illuminance sensor 54 is connected, a central processing unit 25, and an output circuit 26. ing. The main terminal 21 corresponds to a first terminal of the present invention, and a manual control unit 23,
The illuminance measuring unit 24 and the central processing unit 25 constitute a dimming control unit of the first terminal. The above-described manual control unit 23 transmits a signal to the main control device 1 or a slave terminal 31 described below based on a report request from the central processing unit 25 in addition to the function of the manual control unit 13 of the first embodiment. It has become.

The central processing unit 25, in addition to the function of the central processing unit 15 of the first embodiment, requests the manual control unit 23 to report reception completion when the dimming control data is input through the manual control unit 23. Further, the dimming state of the lighting device 55 in the main terminal 21 is transmitted as dimming data to the slave terminal 31 through the manual control unit 23. The transmission of the dimming data is performed every time the dimming level changes in the automatic mode.
The adjustment is performed every time the dimming level is changed based on the manual setting, or at predetermined intervals when the dimming level is constant.

Reference numeral 31 denotes a transmission line 2 as a lower order of the main terminal 21.
, A transmission / reception circuit 32, a manual control unit 33, a central processing unit 34, and an output circuit 35. The slave terminal 31 corresponds to a second terminal of the present invention, and the manual control unit 33 and the central processing unit 34 constitute a dimming control unit of the second terminal.

The manual control unit 33 decodes the dimming level based on the dimming data from the main terminal 21 and notifies the central processing unit 34 of the dimming level. The signal is transmitted to the main terminal 21. The central processing unit 34 requests the above-described notification to the manual control unit 33 when the dimming level is input through the manual control unit 33, and sends a dimming setting signal to the output circuit 35 based on the input dimming level. Output.

Next, the operation will be described with reference to the sequence diagram of FIG. For convenience of explanation of the operation, the operation at the time of switching to the manual mode will be described first, and then the operation at the time of automatic switching by manual release will be described.

When the dimming control data based on the manual switching is transmitted from the main controller 1 (S31), the main terminal 2
One transmission / reception circuit 22 receives the signal and transmits it to the manual control unit 23. At this time, the manual control unit 23 determines whether or not manual switching is performed, decodes the dimming level, and notifies the central processing unit 25. The central processing unit 25 requests the manual control unit 23 to report the completion of reception, and causes the manual control unit 23 to transmit a reception completion signal (S32). Then, the mode is switched to manual according to the notification, a dimming setting signal based on the dimming level is output to the output circuit 26, and the dimming level is transmitted from the manual control unit 23 to the slave terminal 31 as dimming data ( S33). Thereafter, unless the change data (dimming level) from the main controller 1 is received, the same dimming data is transmitted to the slave terminal 31 every predetermined time (S
35).

On the other hand, when the light control data from the main terminal 21 is received, the slave terminal 31 decodes the manual control section 33 and notifies the central processing section 34 of the decoded light control data.
When the notification is received, the manual control section 33 transmits a reception completion signal to the main terminal 21 (S34), and outputs a dimming setting signal to the output circuit 35 based on the input dimming level. When the dimming data is received at predetermined time intervals, the manual control unit 33 sends a reception completion signal in accordance with the instruction of the central processing unit 34 every time the main terminal 2 receives the light control data.
1 (S36).

When main controller 1 transmits dimming control data relating to automatic switching by manual release (S4)
1), the transmission / reception circuit 22 of the main terminal 21 receives the data, the manual control unit 23 makes a determination, and notifies the central processing unit 25 of the result. At this time, the central processing unit 25 causes the main control device 1 to transmit a reception completion signal from the manual control unit 23 (S42), and switches from manual to automatic. Then, dimming control is performed so that the preset setting value and the sensor measurement value of the illuminance sensor 54 become the same, and the manual control unit 23 transmits the setting value as dimming data to the slave terminal 31. (S43). Thereafter, the dimming level changed by the automatic dimming is transmitted to the slave terminal 31 as dimming data (S45).

When the dimming data from the main terminal 21 is received, the manual control unit 33 decodes and notifies the central processing unit 34 of the dimming data. Upon receiving the notification, the manual control unit 33 transmits a reception completion signal (S44), and outputs a dimming control signal to the output circuit 35 based on the input dimming level. Then, when the light control data of the change based on the automatic light control is received, the manual control unit 33 transmits a reception completion signal to the main terminal 21 according to the instruction of the central processing unit 34 (S46), and The dimming of the lighting device 55 is controlled so as to have the same illuminance as the 21 side.

In the second embodiment, the main terminal 21
However, in the case of automatic dimming, transmission is performed to the terminal 31 every time the dimming level changes, but transmission may be performed only when the dimming level changes by a predetermined value or more.

The manual control unit 23, the illuminance measurement unit 24, and the central processing unit 2 which are main components of the main terminal 21
5. Further, the manual control unit 33 and the central processing unit 34 of the slave terminal 31 are illustrated as being composed of independent components, but the control of each unit may be controlled by, for example, one microcomputer. Good.

The main terminal 21 is composed of one slave terminal 31.
Has been described, but the present invention is not limited to this, and a plurality of slave terminals 31 may be controlled.

As described above, according to the second embodiment, the main terminal 21 informs the slave terminal 31 of the dimming state of the luminaire 55 being managed. The illuminance sensor 54 is no longer provided, and furthermore, the notification is made every predetermined time in the manual mode, every time the dimming level changes in the automatic mode, or when the light control level changes by a predetermined value or more. This has the effect of eliminating the need to transmit data.

Embodiment 3 FIG. 6 is a block diagram of a lighting control system according to the third embodiment of the present invention. Note that the same or corresponding parts as those of the second embodiment described with reference to FIG. In the present embodiment, a main terminal 21 and a slave terminal 31 are set as one set, and a plurality of these are provided on the transmission line 2 connected to the main control device 1. In this case, the main controller 1 transmits the dimming control data based on the manual operation to the respective main terminals 21. Each main terminal 21
When the dimming control data is received, a reception completion signal is transmitted to main controller 1. And each main terminal 21
The dimming control of the lighting equipment 55 is controlled based on the same dimming control data, and the dimming data is transmitted to the slave terminal 31 so that the same illuminance is obtained.

In such a system, the brightness of the room can be finely adjusted as compared with the second embodiment, so that the brightness of the lighting fixture 55 on the main terminal 21 side and the brightness of the lighting fixture 55 on the slave terminal 31 side can be improved. Since the difference in length can be minimized and the number of data transmission / reception is smaller than in the conventional case, there is an effect that the traffic on the transmission line 2 can be reduced.

Embodiment 4 FIG. In the fourth embodiment, in the lighting control system according to the third embodiment, when the main control device 1 detects a failure of the main terminal 21, the sub-terminal 31 below the main terminal 21 is utilized. FIG. 7 is a sequence diagram of the lighting control system according to the embodiment.

In the present embodiment, the main controller 1
The dimming control data based on the manual operation is transmitted to the main terminal 21.
When the reception completion signal is not detected even after a predetermined time elapses, for example, the transmission switching unit is provided for transmitting the dimming control data to the slave terminal 31 below the master terminal 21. .

When the dimming control data is transmitted to the slave terminal 31 below the failed main terminal 21 by the transmission switching unit, the slave terminal 31 sends a reception completion signal to the main controller 1. Then, the dimming of the lighting device 55 is set based on the dimming control data (dimming level). When dimming control data is transmitted from the main control device 1 after the failed main terminal device 21 recovers, the main terminal device 21 receives the dimming control data and transmits a reception completion signal to the main control device 1. Then, similarly to the third embodiment, the dimming of the lighting device 55 is started based on the received data, and the data is transmitted to the slave terminal 3.
Send to 1. On the other hand, the slave terminal device 31 transmits a reception completion signal to the main terminal device 21 when receiving the data, and starts the setting of dimming of the lighting equipment 55.

As described above, the main control device 1 includes the main terminal 2
When the failure of No. 1 is detected, the dimming control data is transmitted to the subordinate terminal 31 below the main terminal 21 so that the dimming of the lighting device 55 on the subordinate terminal 31 side can be set. There is an effect that the illuminance based on the setting can be almost obtained.

Embodiment 5 FIG. FIG. 8 is a block diagram of a lighting control system showing a fifth embodiment of the present invention, and FIG. 9 is a sequence diagram in the lighting control system of the present embodiment.
The same or corresponding parts as those in the second embodiment described with reference to FIG.

In the figure, reference numeral 1a denotes a main control device, which transmits a request signal for discriminating a model when, for example, transmitting dimming control data, and as a main terminal device when receiving a notification indicating that the terminal device has a sensor. A model discriminating unit is provided for recognizing and receiving a notification indicating a sensorless terminal as a slave terminal.

Reference numerals 21a and 21b denote terminals, each of which comprises a transmission / reception circuit 22, a manual control unit 23, an illuminance measurement unit 24, a central processing unit 25a, and an output circuit 26, similarly to the main terminal 21 of the second embodiment. I have. Central processing unit 2
The following is added to 5a. For example, when the power is turned on, it is determined whether or not the illuminance sensor 54 is connected through the illuminance measurement unit 24, and when the connection of the illuminance sensor 54 is detected, the terminal is managed as a sensor-equipped terminal. The terminal is managed as a sensorless terminal, and when a model determination request signal is received, a reception completion signal is transmitted and the model of the terminal is notified.

Next, the operation according to the present embodiment will be described with reference to the sequence diagram of FIG. When the main controller 1a first transmits a model determination request signal to the terminal 21a (S5).
1) The terminal device 21a transmits a reception completion signal and notifies the model (terminal device with sensor) recognized when the power is turned on (S52, S53). At this time, the main controller 1
a recognizes the terminal 21a as the main terminal in accordance with the notification, and transmits a reception completion signal (S54). And
A model determination request signal is transmitted to the terminal 21b (S
55). Upon receiving the model determination request signal, the terminal device 21b transmits a reception completion signal as described above (S56),
The model (terminal without sensor) recognized at power-on is notified (S57). Main controller 1a that has received the notification,
The terminal 21b is recognized as a slave terminal, and the terminal 21b is recognized.
b, and transmits a reception completion signal (S58). Then, it transmits the dimming control data based on the manual operation to the terminal 21a according to the recognition result.

Note that also in the fifth embodiment, the terminal 2
1a, 21b manual control unit 23, illuminance measurement unit 24
Instead of the central processing unit 25a, a single microcomputer may be used.

As described above, the main terminal is determined from the plurality of terminals 21a and 21b connected to the transmission line 2 before transmitting the dimming control data, so that an increase in traffic on the transmission line 2 is prevented. There is an effect that can be.

In the above-described embodiment, the setting value of the automatic light control is set on the terminal device side. However, the setting value may be set on the main control device side. In addition, switching between automatic and manual was performed on the main controller side.
A switch may be provided on the terminal to switch between automatic and manual.

[0050]

As described above, according to the present invention, the terminal device compares the measured illuminance sensor value with the predetermined illuminance as a reference value, and controls the dimming of the luminaire according to the difference. When a signal from the control device is received, the dimming of the lighting fixture is set based on the manual setting, so that the lighting fixture of the lighting fixture does not need to transmit and receive data between the master unit and the terminal device as in the related art. There is an effect that dimming can be set and an increase in traffic on the transmission line can be suppressed.

Further, according to the present invention, the first terminal device comprises:
Since the dimming state of the lighting equipment being managed is reported to the second terminal, there is an effect that it is not necessary to provide an illuminance sensor for each terminal.

Also, when the first terminal notifies the second terminal of the dimming state, the dimming is performed every predetermined time in manual mode and when the dimming level changes by a predetermined value or more in automatic mode. Therefore, there is an effect that it is not necessary to frequently transmit data.

In a system in which a first terminal and a second terminal are provided as a set and a plurality of the terminals are provided on a transmission line to which the main controller is connected, the main controller is connected to the first terminal. Since the signal is transmitted only to the first embodiment, the brightness of the room can be finely adjusted as compared with the second embodiment.
The difference between the brightness of the lighting equipment on the side of the terminal and the brightness of the lighting equipment on the side of the second terminal can be minimized, and since data transmission and reception are smaller than before, the main control unit and There is an effect that the traffic on the transmission path between the two can be reduced.

Further, according to the present invention, the main control device comprises:
When a failure of the first terminal is detected, a signal is transmitted to a second terminal below the first terminal so that the dimming of the lighting equipment on the second terminal can be set. Therefore, there is an effect that the illuminance based on the manual setting can be almost obtained.

Further, according to the present invention, the main control device transmits a signal for requesting the terminal device to determine the model, and the first terminal device or the second terminal device according to the response to the signal. Is determined, and when transmitting a signal based on a manual operation, the signal is transmitted to the determined first terminal device.
This has the effect of preventing an increase in traffic on the transmission line between the main controller and the first terminal.

[Brief description of the drawings]

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

FIG. 2 is a flowchart illustrating an operation of a manual control unit of the terminal device according to the first embodiment.

FIG. 3 is a flowchart illustrating an operation of a central processing unit of the terminal device.

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

FIG. 5 is a sequence diagram in a lighting control system according to a second embodiment.

FIG. 6 is a block diagram of a lighting control system according to a third embodiment of the present invention.

FIG. 7 is a sequence diagram of a lighting control system according to a fourth embodiment of the present invention.

FIG. 8 is a block diagram of a lighting control system according to a fifth embodiment of the present invention.

FIG. 9 is a sequence diagram in a lighting control system according to a fifth embodiment.

FIG. 10 is a system block diagram using a light control device of a conventional lighting apparatus disclosed in, for example, Japanese Patent Application Laid-Open No. 8-45672.

FIG. 11 is a flowchart showing an operation of a terminal device which is a conventional light control device.

FIG. 12 is a sequence diagram in a conventional system.

[Explanation of symbols]

1 main control device, 2 transmission line, 11 terminal device, 12 receiving circuit, 13 manual control unit, 14 illuminance measurement unit,
15 central processing unit, 16 output circuit, 54 illuminance sensor, 55 lighting equipment.

Claims (6)

[Claims] 1. A main control device for transmitting a signal based on a manual operation, and a terminal connected to a lighting fixture and having an illuminance sensor, wherein the terminal uses an illuminance sensor with a predetermined illuminance as a reference value. Control the dimming of the luminaire in accordance with the difference, determine whether or not manual switching when the signal from the main control device is received, to manual setting when manual switching An illumination control system, comprising: a dimming control unit that sets dimming of a lighting apparatus based on the dimming control. 2. A main control device for transmitting a signal based on a manual operation, a first terminal connected to a lighting device and having an illuminance sensor, and a second terminal connected to the lighting device. The first terminal device compares the measured illuminance sensor value with a predetermined illuminance as a reference value, controls the dimming of the lighting fixture according to the difference, and transmits the control dimming as data. And
When a signal from the main controller is received, it is determined whether or not manual switching is performed, and when manual switching is performed, dimming of the lighting fixture is set based on the manual setting, and
A light control unit that transmits the set light control as data; and the second terminal device includes a light control unit that controls light control of the lighting fixture based on the data. Lighting control system. 3. The dimming control unit of the first terminal transmits the dimming by the automatic dimming to the second terminal as data when the dimming has changed by a predetermined value or more. 3. The illumination control system according to claim 2, wherein the set dimming is transmitted as data to the second terminal every time a predetermined time elapses, unless the dimming by the control is changed. 4. A plurality of the first and second terminals according to claim 2 or 3 are provided as a set, and the main control device comprises:
An illumination control system for transmitting a signal based on a manual operation to each of the first terminals. 5. The transmission control unit according to claim 2, wherein the main control device includes a transmission switching unit that transmits a signal based on a manual operation to the second terminal device when a failure of the first terminal device is detected. The lighting control system according to claim 3, 3 or 4. 6. The main controller transmits a signal requesting a model determination to a terminal, and determines either the first terminal or the second terminal according to a response to the signal. The light control controllers of the first and second terminals determine the presence or absence of an illuminance sensor when the request signal is received, and provide the main control device with the result based on the result. The lighting control system according to claim 2, 3 or 4, wherein the lighting control system responds.