JP2017068896A - Dimming system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dimming system capable of setting brightness by an illuminating device for each of a plurality of areas, by a simple configuration, and lightening each illuminating device at the maximum luminance in a case where a failure or interruption of service occurs at a control device.SOLUTION: A dimming system is configured by: at least one illuminating devices 11-14 arranged so as to correspond to areas A-D to be illuminated, respectively; terminal units 31-34 respectively connected with the illuminating devices and that control luminances of the illuminating devices; and one control unit that performs dimming control of each terminal unit. The control unit is configured to set the luminance for each individual illuminating device, and to send to each terminal unit a control signal that includes a luminance instruction signal corresponding to the set luminance. The terminal unit is configured to send the luminance instruction signal to the corresponding illuminating devices 11-14 on the basis of the control signal from the control unit, to make the illuminating devices emit light at the predetermined luminances.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a light control system for an illuminating device that illuminates a large area by area.

  Conventionally, when illuminating a large area such as a gymnasium, a factory, a warehouse, etc., it is divided into areas of appropriate areas, and lighting devices are arranged for each area, and each lighting device is driven and controlled by a common control device. There is a light control system that emits light.

  Various light control systems such as these are normally used and are normally turned off. When a person enters the area, the sensor detects the lighting device in the area with the maximum brightness or the set brightness. It is configured to light up.

However, in such a dimming system, the area where people are present is brighter by the corresponding lighting device, but the lighting device is turned off in areas where there are no people, so the surrounding situation is not known, and safety is There was also a problem that there was a safety problem and anxiety was given to the user.
On the other hand, if lighting devices in all areas are turned on without relying on sensors, areas without people will always be illuminated, resulting in wasted power consumption and from the viewpoint of energy saving. Is also not preferred.

  Further, when a control signal is transmitted from the control device to each lighting device using, for example, a local area LAN, etc., when a local area LAN failure or a node failure occurs, If the control signal is not input even if the power is supplied, the lighting device remains off and control becomes impossible, and depending on the faulty part of the LAN, it may be necessary to reset the system. The problem of cost is also inherent.

  In addition, the lighting devices arranged in each area are turned off when the driving control is stopped due to a failure of the control device or the like. For this reason, in an emergency or the like, the field of view in each area cannot be secured, which is a very big problem for safety.

  In view of the above, the present invention can set the brightness of the lighting device for each of a plurality of areas with a simple configuration, and at the same time, if each control device has a failure or a power failure, An object of the present invention is to provide a dimming system that is lit with brightness.

  According to the present invention, at least one illumination device arranged corresponding to each area to be illuminated, a terminal unit connected to each illumination device and controlling the luminance of the illumination device, and each terminal And a control unit that performs dimming control of the unit. The control unit sets the brightness for each lighting device, and each control signal includes a brightness instruction signal corresponding to the set brightness. A dimming device, wherein the terminal unit sends a luminance instruction signal to a corresponding lighting device based on a control signal from the control unit to cause the lighting device to emit light at a predetermined luminance; Achieved by the system.

According to the above configuration, each terminal unit transmits the luminance instruction signal to the corresponding illumination device based on the control signal including the luminance instruction signal corresponding to the luminance set by the control unit. Emits light at the set brightness to illuminate the corresponding area.
As a result, the control unit sets the brightness for each lighting device in each area, so that a large area such as a gymnasium, factory, warehouse, or office space that spans several floors is set for each area. Will be illuminated.
Therefore, illumination is performed with optimum brightness in each area.

The dimming system according to the present invention is preferably characterized in that the control unit includes a selection unit that selects a lighting device to be dimmed and a luminance adjustment unit that adjusts the luminance of the selected lighting device. And
According to this configuration, with respect to the lighting device selected by the selection unit, the set luminance is adjusted by the luminance adjusting unit, and the control signal including the luminance instruction signal corresponding to the adjusted set luminance is transmitted to the terminal corresponding to the lighting device. Since it is sent to the unit, the lighting devices corresponding to each area emit light at the set brightness.

In the light control system according to the present invention, preferably, the control unit includes switching means for switching between the collective adjustment mode and the individual adjustment mode. When the switching means is in the individual adjustment mode, the brightness adjusting means is selected by the selection means. Adjusting the set brightness of the lighting device selected by the above, and sending a control signal including a brightness instruction signal to the terminal unit corresponding to the lighting device, and when in the batch adjustment mode, the brightness adjusting means While invalidating, the brightness | luminance of all the illuminating devices is adjusted uniformly, and the control signal containing a brightness | luminance instruction | indication signal is each sent to all the terminal units, It is characterized by the above-mentioned.
According to this configuration, in the collective adjustment mode, all the illumination devices collectively emit light with the same set luminance, so that all areas are illuminated with the same brightness.

In the dimming system according to the present invention, preferably, when the switching means is switched from the individual adjustment mode to the batch adjustment mode, the brightness adjustment means returns the set brightness of all the lighting devices to the set brightness in the previous batch adjustment mode. Or the currently set brightness.
According to this configuration, when the individual adjustment mode is switched to the batch adjustment mode by the switching unit, all the lighting devices emit light with the same set brightness as the previous batch adjustment mode or the current set brightness. There is no difference in brightness.

In the dimming system according to the present invention, preferably, when the switching unit is switched from the collective adjustment mode to the individual adjustment mode, the luminance adjustment unit adjusts the set luminance only for the illumination device selected by the selection unit, and the remaining illumination devices The set brightness is maintained at the set brightness in the batch adjustment mode before switching.
According to this configuration, when the switching unit is switched from the collective adjustment mode to the individual adjustment mode, the illumination device selected by the selection unit is adjusted in brightness by the luminance adjustment unit and is not selected by the selection unit. Since the device is lit at the set brightness in the batch adjustment mode before switching, the brightness does not fluctuate.

In the dimming system according to the present invention, preferably, when the switching unit is in the individual adjustment mode, the luminance adjusting unit holds the set luminance before the deselection as the set luminance of the lighting device that the selection unit has deselected. It is characterized by.
According to this configuration, in the individual adjustment mode, the lighting device emits light with the set luminance before the selection is canceled with respect to the lighting device whose selection is canceled by the selection unit. Therefore, by sequentially selecting each lighting device by the selection unit, the set brightness can be individually adjusted for each lighting device.

The dimming system according to the present invention preferably further includes a sensor that detects the presence of a person or the like in an area to be illuminated by each lighting device and sends a detection signal to a corresponding terminal unit. The sensor mode setting means for setting sensor mode information corresponding to each lighting device is provided, and the brightness adjustment means adds the sensor mode information set by the sensor mode setting means to the control signal including the brightness instruction signal. When the sensor information is in the off mode, or when the sensor information is in the on mode and there is no detection signal from the sensor, the corresponding lighting device emits light with the set brightness. When the sensor information is in the on mode and there is a detection signal from the sensor, The lighting device is characterized in that emit light at the maximum luminance.
According to this configuration, when a detection signal is input from the sensor, the terminal unit corresponding to the area in which the sensor is disposed has a luminance instruction signal with the maximum luminance when the sensor information is in the on mode. To emit light at the maximum brightness, but when the sensor information is in the off mode and when the sensor information is in the on mode and there is no detection signal from the sensor, the corresponding illumination apparatus is instructed to set the brightness of the set brightness. A signal is sent to keep the lighting device emitting light at the set brightness.

In the dimming system according to the present invention, preferably, when the control unit transmits control information using an information communication technique, a control signal is sent to each terminal unit at predetermined time intervals. However, when the control signal from the control unit cannot be received for a certain time, the corresponding lighting device is caused to emit light at the maximum luminance.
According to this configuration, each terminal unit transmits a luminance instruction signal with the maximum luminance to the corresponding lighting device when the control signal from the control unit is not input for a certain period of time, and emits the lighting device with the maximum luminance. Let As a result, when an abnormality such as cable disconnection or power failure occurs in the control unit, the lighting device in the failure target area emits light at the maximum brightness, and the lighting device is turned off due to a failure of the control unit or the like. It is possible to avoid the said safety problem.

The dimming system according to the present invention preferably corresponds to when each terminal unit is supplied with power from the control unit and each lighting device is supplied with power individually, and when power supply to each terminal unit is cut off. A luminance instruction signal having a maximum luminance is transmitted to the lighting device so that the lighting device emits light with the maximum luminance.
According to this configuration, even if the power supply to each terminal unit is interrupted, the lighting device corresponding to the terminal unit emits light with the maximum luminance. Thereby, it is possible to avoid turning off the lighting device due to a failure of the control unit or a power failure limited to the control part.

The dimming system according to the present invention is preferably configured such that each lighting device emits light at the maximum luminance when the luminance instruction signal input from the corresponding terminal unit is open or has a high impedance. However, when power supply is cut off, the luminance instruction signal to the corresponding lighting device is configured to be open or have a high impedance.
According to this configuration, since each illumination device is configured to open the luminance instruction signal or to have a high impedance when no power is supplied, it is assumed that the luminance instruction signal from the corresponding terminal unit is interrupted by power-off. In addition, the lighting device emits light with the maximum luminance because it is powered independently. Thereby, the lighting device can be prevented from being turned off due to a power failure.

According to another configuration of the present invention, the above object includes a plurality of sets of dimming systems having any of the above-described configurations, and a master control unit for controlling the control unit of each dimming system. This is achieved by a large-scale dimming system.
In addition, according to still another configuration of the present invention, the above object includes a plurality of sets of dimming systems having any of the above-described configurations, and control units in each dimming system are connected to each other, This is achieved by a large-scale dimming system, characterized in that a control unit or any one control unit controls another control unit.
According to the large-scale dimming system having such a configuration, a large-scale large-scale facility having a larger number of areas to be illuminated by combining a plurality of dimming systems and using the control unit or the master control unit. It is possible to perform dimmed lighting for each area.

  In this way, according to the present invention, the brightness by the lighting device can be set for each of a plurality of areas with a simple configuration, and when a failure, a power failure, a disconnection of a connection cable, or the like occurs in the control device Can provide a dimming system in which each lighting device is lit at the maximum brightness.

It is the schematic which shows the structure of one Embodiment of the light modulation system by this invention. It is a block diagram which shows the terminal unit, illuminating device, and sensor corresponding to one area in the light modulation system of FIG. It is a partial circuit diagram which shows the structure of the output part in the terminal unit of FIG. It is a block diagram which shows the structure of the control unit in the light modulation system of FIG. It is a schematic front view which shows the external appearance of the control unit of FIG.

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.
FIG. 1 shows a configuration of an embodiment of a dimming system according to the present invention.
In FIG. 1, a dimming system 10 includes lighting devices 11, 12, 13, 14 and sensors arranged for a plurality of (four in the illustrated example) areas A, B, C, D to be illuminated. 21, 22, 23, 24, terminal units 31, 32, 33, 34 connected to each of the lighting devices 11-14, and one control unit 40 for dimming control of each terminal unit 31-34, , Is composed of.

The areas A to D are floors of, for example, a gymnasium, a factory, a warehouse, etc. In this case, the floor is divided into four areas, and the divided areas are defined as areas A to D.
The illuminating devices 11 to 14 have the same configuration, and conventionally known illuminating devices, for example, LED illuminating devices in the case of illustration, are used.
Here, the illuminating devices 11 to 14 are independently supplied with power by an external power source provided separately from the terminal units 31 to 34 and the control unit 40.
And the illuminating devices 11-14 are driven based on the brightness | luminance instruction | indication signal sent from the corresponding terminal units 31-34, respectively, and light-emits with predetermined brightness | luminance by an internal control circuit.

  The sensors 21 to 24 all have the same configuration. For example, an infrared sensor or the like is used, and when a person or the like enters the corresponding area A to D, this is detected and a detection signal is output.

The terminal units 31 to 34 have the same configuration, and for example, the terminal unit 31 corresponding to the area A will be described below.
The terminal unit 31 is connected to the corresponding lighting device 11 and receives a detection signal from the sensor 21.
Further, the terminal unit 31 is operated by power feeding from a control unit 40 described later, and a control signal from the control unit 40 is input.

  Here, the terminal unit 31 extracts a luminance instruction signal S1 related to the terminal unit 31 from the control signal S from the control unit 40 based on identification information described later, and based on the luminance instruction signal S1, the lighting device 11 Is controlled so as to cause the illumination device 11 to emit light with the luminance indicated by the luminance instruction signal S1.

In addition, when the sensor setting information included in the control signal S is in the on mode when the detection signal from the sensor 21 is input, the terminal unit 31 does not depend on the luminance instruction signal included in the control signal S. A luminance instruction signal with the maximum luminance is sent to the lighting device 11 to cause the lighting device 11 to emit light with the maximum luminance.
The terminal unit 31 is included in the control signal S regardless of the detection signal when the sensor setting information included in the control signal S is in the off mode when the detection signal from the sensor 21 is input. The luminance instruction signal S1 is sent to the illumination device 11, and the illumination device 11 is caused to emit light at the set luminance indicated by the luminance instruction signal S1.

  When the control unit 40 sends a control signal to the terminal unit 31 using an information communication method, when the control signal S from the control unit 40 is not sent for a certain time, the lighting device 11 has the maximum luminance. A luminance instruction signal is transmitted to cause the lighting device 11 to emit light at the maximum luminance.

Further, when the power supply from the control unit 40 is cut off, the terminal unit 31 sends a luminance instruction signal with the maximum luminance to the lighting device 11 to emit light with the maximum luminance.
For example, when the power supply is interrupted, the terminal unit 31 opens or sets the luminance instruction signal to the lighting device 11 to high impedance.
Correspondingly, the illumination device 11 is configured to emit light at the maximum luminance, assuming that the luminance instruction signal is at a high level when the luminance instruction signal is open or high impedance.

More specifically, for example, as shown in FIG. 3, the terminal unit 31 is configured such that the power supply voltage from the control unit 40 is applied to the light emitting element 31b of the photocoupler 31a, and the light emitting element 31b emits light, whereby the photocoupler The light receiving element 31c of 31a is turned on.
Therefore, when power is supplied from the control unit 40 to the terminal unit 31, the light receiving element 31c of the photocoupler 31a is turned on, and the control circuit input 11a of the lighting device 11 becomes the ground potential, so that the lighting device 11 is turned on. Is inputted with the luminance instruction signal S1, and emits light with the set luminance.
On the other hand, when the power supply from the control unit 40 to the terminal unit 31 is cut off, the light emitting element 31b of the photocoupler 31a stops emitting light, and the light receiving element 31c of the photocoupler 31a is opened, resulting in high impedance.
Accordingly, the luminance instruction signal input 11a of the illuminating device 11 is only the pull-up resistor 11b from the internal power supply, and thus becomes a high level. Therefore, the illuminating device 11 emits light with the maximum luminance.

The control unit 40 is configured as shown in FIG.
In FIG. 4, the control unit 40 adjusts the setting brightness | luminance of the selection apparatus 41 which selects the illuminating devices 11-14 which should be dimmed, and the illuminating devices 11-14, and produces | generates the control signal containing the brightness | luminance instruction | indication signal S1. A brightness adjusting unit 42, a switching unit 43 for switching between batch adjustment and individual adjustment, and a sensor mode setting unit 44 for turning on / off each of the sensors 21 to 24 are provided.
Here, the selection means 41 and the sensor mode setting means 44 are provided with selection means 41a, 41b, 41c, 41d and sensor mode setting means 44a, 44b, 44c, 44d, respectively, corresponding to the areas A to D. The outputs of 41a and 44a, 41b and 44b, 41c and 44c, 41d and 44d are connected as control signals to the corresponding terminal units.

The selection means 41, that is, 41a to 41d is arranged on the front panel of the control unit 40 as shown in FIG. 5, for example, and is configured as a push-type momentary switch in the illustrated case, and pushes the switch. Is turned on by pressing the switch again.
In order to visually display the operation states of the selection means 41a to 41d, light emitting display portions 45a, 45b, 45c, and 45d made of, for example, LEDs are provided adjacent to the selection means 41a to 41d. When the selection means 41a to 41d are in the on state, the luminance adjustment means 42 is configured so that the corresponding light emission display portions 45a to 45d emit light.
These selection means 41a to 41d are connected to the brightness adjustment means 42, respectively.

For example, as shown in FIG. 5, the switching means 43 is disposed on the front panel of the control unit 40. In the illustrated case, the switching means 43 is configured as a momentary switch, and is turned on by pushing the switch, and the switch is turned on again. Turns off by pushing.
Note that the switching means 43 uses a so-called self-illuminating switch, and is configured such that the front surface is back illuminated when turned on.
Here, the switching means 42 switches between the batch adjustment mode and the individual adjustment mode. In this case, the switching means 42 is set to be in the batch adjustment mode when turned off and in the individual adjustment mode when turned on.
The switching unit 42 is connected to the brightness adjusting unit 42.

The brightness adjusting means 42 is provided with an adjusting knob 42a provided on the front panel of the control unit 40 and operates as follows, and these display and operate with a computer program by combining a liquid crystal display and a touch panel. The equivalent function may be realized by a method such as performing. It goes without saying that the same applies to the switches described above.
Note that the following operation may also be realized by a logic circuit or a computer program.

When the switching unit 43 is on, that is, in the individual adjustment mode, the luminance adjustment unit 42 adjusts and adjusts the set luminance by operating the adjustment knob 42a for the illumination devices 11 to 14 selected by the selection unit 41. While holding the set brightness, a brightness instruction signal S1 corresponding to the set brightness is generated.
Note that the set luminance can be held by, for example, a register or by storage means.
Further, when the switching unit 43 is off, that is, in the collective adjustment mode, the luminance adjustment unit 42 disables the selection units 41a to 41d, and the adjustment luminance 42 is adjusted by the adjustment knob 42a for all the illumination devices 11 to 14 to adjust the luminance adjustment unit 42. A luminance instruction signal S1 corresponding to the set luminance is generated.
Here, the luminance instruction signal S <b> 1 includes information regarding the set luminance and identification information regarding the related illumination devices 11 to 14.
That is, in the collective adjustment mode, the brightness adjusting unit 42 generates the brightness instruction signal S1 for all the lighting devices 11 to 14, respectively.

For example, as shown in FIG. 5, the sensor mode setting means 44a to 44d are arranged on the right side of the selection means 41a to 41d described above on the front panel of the control unit 40. When the knob is moved to the right, the off mode is set, and when the knob is moved to the left, the on mode is set.
The sensor mode setting units 44a to 44d are connected to the brightness adjusting unit 42, respectively.

  As a result, the brightness adjustment means 42 sends the sensor mode setting means 44a to 44a to the brightness instruction signals S1 related to the illumination devices 11 to 14 in the corresponding areas A to D according to the on / off states of the sensor mode setting means 44a to 44d. The sensor mode information S2 indicating the off mode or the on mode of 44d is added and sent as a control signal S to each terminal unit 31-34.

Here, the luminance adjusting unit 42 switches the set luminance of the lighting devices 11 to 14 as follows when the switching unit 43 is switched.
That is, when the switching unit 43 is switched from the individual adjustment mode to the batch adjustment mode, the brightness adjustment unit 42 changes the set brightness of all the lighting devices 11 to 14 to the set brightness in the previous batch adjustment mode, or The set brightness of the lighting device is set to the currently set brightness.

  In addition, when the switching unit 43 is switched from the collective adjustment mode to the individual adjustment mode, the luminance adjustment unit 42 adjusts the set luminance for the lighting devices 11 to 14 selected by the selection units 41a to 41d using the adjustment knob 42a. For the remaining lighting devices 11 to 14 that are not selected by the selection means 41a to 41d, the set brightness in the batch adjustment mode before switching the set brightness is held.

  Further, when the switching unit 43 is in the individual adjustment mode, the selection units 41a to 41d are turned off, and the selection of the corresponding illumination devices 11 to 14 is released, the brightness adjustment unit 42 The set brightness of 14 before the selection cancellation is held.

  Then, the luminance adjusting means 42 holds the set luminance set in this way, and at the same time, sets the luminance instruction signal S1 corresponding to the set luminance and the sensor mode information S2 as the control signal S for each predetermined time. Send to terminal units 31-33.

The dimming system 10 according to the embodiment of the present invention is configured as described above and operates as follows.
First, when the switching unit 43 of the control unit 40 is off and in the batch adjustment mode, the luminance adjusting unit 42 adjusts the set luminance related to all the lighting devices 11 to 14 by operating the adjustment knob 42a. can do.
Then, the brightness adjusting unit 42 generates a brightness instruction signal S1 corresponding to the adjusted set brightness.
At the same time, the brightness adjusting unit 42 generates sensor mode information S2 indicating the off mode or the on mode of the sensors related to each of the lighting devices 11 to 14 in accordance with the on / off states of the sensor mode setting units 44a to 44d.
Thereby, the brightness adjusting means 42 generates the control signal S by adding the identification information for each of the lighting devices 11 to 14 to the brightness instruction signal S1 and the sensor mode information S2, and for each terminal unit 31 to 34. And send it out. Of course, when the control information is sent using an information communication technique, the control information is sent every predetermined time.

Receiving this, each terminal unit 31-34 takes out the control signal S regarding each corresponding area AD, and sends a brightness | luminance instruction | indication signal to the corresponding illuminating devices 11-14 as follows.
That is, each of the terminal units 31 to 34 has the sensor mode information S2 included in the control signal S in the off mode, or the sensor mode information S2 is in the on mode and there is no detection signal from the sensors 21 to 24. Sends a luminance instruction signal S1 to the illuminating devices 11 to 14, and causes these illuminating devices 11 to 14 to emit light at a set luminance, respectively.
Further, each of the terminal units 31 to 34 has the maximum luminance in the lighting devices 11 to 14 regardless of the luminance instruction signal S1 when the sensor mode information S2 is in the on mode and there is a detection signal from the sensors 21 to 24. Is transmitted to cause each of the lighting devices 11 to 14 to emit light with the maximum luminance.

On the other hand, when the switching unit 43 of the control unit 40 is turned on and switched from the collective adjustment mode to the individual adjustment mode, the luminance adjustment unit 42 is selected because the selection units 41a to 41d are on. With respect to the lighting devices 11 to 14, the set brightness can be adjusted by operating the adjustment knob 42a.
Here, if the plurality of selection units 41a to 41d among the selection units 41a to 41d are on, the luminance adjustment unit 42 adjusts the set luminance with respect to the plurality of selected lighting devices 11 to 14; Holds the adjusted set brightness.
In addition, for the lighting devices 11 to 14 in which the selection units 41a to 41d are off and are not selected, the luminance adjustment unit 42 holds the set luminance in the batch adjustment mode before switching.
The luminance adjusting unit 42 generates a luminance instruction signal S1 related to each of the lighting devices 11 to 14 based on the set luminance held in this way, and based on the on / off states of the sensor mode setting units 45a to 45d. Similarly, by generating the sensor mode information S2, the control signal S is generated and sent to the terminal units 31 to 34. When the control signal S is sent using an information communication method, the control signal S is sent to each terminal unit 31 to 34 every predetermined time.

In response to this, each of the terminal units 31 to 34 takes out the control signal S for the corresponding areas A to D in the same manner as in the collective adjustment mode, and sends the luminance instruction signals to the corresponding lighting devices 11 to 14 respectively. Send S1.
That is, each of the terminal units 31 to 34 has the sensor mode information S2 included in the control signal S in the off mode, or the sensor mode information S2 is in the on mode and there is no detection signal from the sensors 21 to 24. Transmits a luminance instruction signal S1 to the lighting devices 11 to 14 based on the luminance instruction signal S1, and causes the lighting devices 11 to 14 to emit light at a set luminance.
Further, each of the terminal units 31 to 34 has the maximum luminance in the lighting devices 11 to 14 regardless of the luminance instruction signal S1 when the sensor mode information S2 is in the on mode and there is a detection signal from the sensors 21 to 24. Are transmitted, and each of these illumination devices 11 to 14 is caused to emit light with the maximum luminance.

Here, when each terminal unit 31-34 is not able to receive the control signal S from the control unit 40 using a method of information communication for a certain period of time, the terminal units 31-34 are connected to the corresponding lighting devices 11-14. A luminance instruction signal having the maximum luminance is transmitted to cause each of the lighting devices 11 to 14 to emit light with the maximum luminance.
As a result, when the control unit 40 becomes unable to send out the control signal S due to a failure or the like, the lighting devices 11 to 14 emit light at the maximum luminance, so that the lighting devices 11 to 14 are turned off as in the past. It never shines at low brightness.

In addition, each terminal unit 31 to 34 is operated by being supplied with power from the control unit 40, but when this power supply is cut off, each of the terminal units 31 to 34 is respectively associated with the corresponding lighting devices 11 to 14. A luminance instruction signal having the maximum luminance is sent to the lighting devices 11 to 14 to emit light at the maximum luminance.
In this case, the terminals 31 to 34 are not supplied with power, and the luminance instruction signals sent to the corresponding lighting devices 11 to 14 are released or become high impedance. Accordingly, each of the lighting devices 11 to 14 emits light at the maximum luminance assuming that the luminance instruction signal is at a high level. At this time, if each of the lighting devices 11 to 14 is powered independently, the light is reliably emitted with the maximum luminance without being affected by the power failure of the terminal units 31 to 34 or the control unit 40.

The present invention can be implemented in various forms without departing from the spirit of the present invention.
For example, in the above-described embodiment, the dimming system 10 is configured to perform dimming of the lighting devices 11 to 14 in the four areas A to D by one control unit 40, but is not limited thereto. First, it is possible to arrange lighting devices, terminal units, and sensors in one to three or five or more areas, respectively, and to adjust the lighting devices individually or individually.

  In the embodiment described above, each of the terminal units 31 to 34 is configured to be supplied with power from the control unit 40. However, the present invention is not limited to this, and each of the terminal units 31 to 34 corresponds to the corresponding lighting devices 11 to 14. It is obvious that the power may be supplied independently as well as.

  In the embodiment described above, the control signal S is sent from the control unit 40 to the terminal units 31 to 34. The control signal S is a digital signal even if it is an analog signal. Further, the wiring from the control unit 40 to each of the terminal units 31 to 34 is not particularly limited, and the switch state may be sent as it is, and after the switch state can be handled as information. The information may be sent using an information communication technique. The communication may be wired communication or wireless communication, and may be configured as a LAN.

  In the embodiment described above, the selection means 41a to 41d, the switching means 43, and the sensor mode setting means 44a to 44d provided in the control unit 40 are each composed of a switch. Any touch panel method may be used.

In the embodiment described above, the control unit 40 is configured such that the selection means 41a to 41d, the brightness adjustment means 42, the switching means 43, and the sensor mode setting means 45a to 45d are manually operated. Not limited to this, for example, control information may be input to the control unit 40 from the outside such as a server to adjust the set luminance for each of the lighting devices 11 to 14.
In this case, a plurality of sets of light control systems 10 are prepared, and control information is input to the control unit 40 of each light control system 10 from the outside of a server or the like to control the lighting device of each light control system 10. Is also possible.
Alternatively, a plurality of sets of light control systems 10 may be prepared, the control units 40 in each light control system 10 may be connected to each other, and the other control units 40 may be controlled by one control unit 40.

  In the above-described embodiment, LED lighting devices are used as the lighting devices 11 to 14. However, the present invention is not limited to this, and it is obvious that lighting devices using other light sources other than LEDs may be used. .

DESCRIPTION OF SYMBOLS 10 Light control system 11-14 Illuminating device 11a Luminance instruction | indication signal input 11b Pull-up resistance 21-24 Sensor 31-34 Terminal unit 31a Photocoupler 31b Light emitting element 31c Light receiving element 40 Control unit 41, 41a, 41b, 41c, 41d Selection means 42 brightness adjustment means 42a adjustment knob 43 switching means 44, 44a, 44b, 44c, 44d sensor mode setting means S control signal S1 brightness instruction signal S2 sensor mode information

Claims (12)

At least one illuminating device arranged corresponding to each area to be illuminated, a terminal unit connected to each illuminating device and controlling the luminance of the illuminating device, and one control unit for dimming control of each terminal unit And consists of
The brightness of the lighting device is set for each area in the control unit, and a control signal including a brightness instruction signal corresponding to the set brightness is sent to each terminal unit,
The light control system, wherein the terminal unit sends out the luminance instruction signal to a corresponding lighting device based on a control signal from a control unit to cause the lighting device to emit light with a predetermined luminance.   2. The light control according to claim 1, wherein the control unit includes a selection unit that selects a lighting device to be dimmed, and a luminance adjustment unit that adjusts the luminance of the selected lighting device. system. The control unit comprises switching means for switching between a batch adjustment mode and an individual adjustment mode;
When the switching unit is in the individual adjustment mode, the luminance adjusting unit adjusts the set luminance of the lighting device selected by the selecting unit, and sends a control signal including a luminance instruction signal to the terminal corresponding to the lighting device. When it is sent to the unit and in the batch adjustment mode, the brightness adjusting means invalidates the selection means and uniformly adjusts the brightness of all the lighting devices, and all the control signals including the brightness instruction signal are sent. The light control system according to claim 2, wherein the light control system is sent to each of the terminal units.   When the switching means is switched from the individual adjustment mode to the batch adjustment mode, the brightness adjustment means returns the set brightness of all the lighting devices to the set brightness in the previous batch adjustment mode, or the currently set brightness. The light control system according to claim 3, wherein:   When the switching means is switched from the batch adjustment mode to the individual adjustment mode, the brightness adjustment means adjusts the set brightness only for the lighting device selected by the selection means, and the set brightness of the remaining lighting devices is the batch before switching. The dimming system according to claim 3, wherein the set luminance in the adjustment mode is maintained.   The brightness adjustment means holds the set brightness before deselection as the set brightness of the lighting device that has been deselected by the selection means when the switching means is in the individual adjustment mode. Dimming system as described. Furthermore, each lighting device includes a sensor that detects the presence of a person or the like in an area to be illuminated and sends a detection signal to the corresponding terminal unit.
The control unit includes sensor mode setting means for setting sensor mode information corresponding to each lighting device,
The brightness adjusting means adds the sensor mode information set by the sensor mode setting means to a control signal including a brightness instruction signal, and sends it to each terminal unit.
When the sensor information is in the off mode, or when the sensor information is in the on mode and there is no detection signal from the sensor, the terminal unit causes the corresponding lighting device to emit light at the set brightness, and the sensor information is in the on mode and the sensor. The dimming system according to claim 2, wherein when there is a detection signal from, the corresponding illumination device emits light at the maximum luminance. When the control unit transmits control information using a method of information communication, a control signal is sent to each terminal unit every predetermined time,
8. The light control according to claim 1, wherein each of the terminal units causes the corresponding lighting device to emit light at the maximum luminance when the control signal from the control unit cannot be received for a certain period of time. system. Each terminal unit is powered from the control unit, and each lighting device is individually powered,
The light control system according to any one of claims 1 to 7, wherein when the power supply to each terminal unit is cut off, the corresponding lighting device emits light with the maximum luminance. Each of the lighting devices is configured to emit light at the maximum luminance when the luminance instruction signal input from the corresponding terminal unit is open or high impedance,
The dimming system according to claim 9, wherein each terminal unit is configured to open or set a high-impedance luminance instruction signal to a corresponding lighting device when power supply is interrupted.   A large-scale dimming system comprising a plurality of sets of dimming systems according to any one of claims 1 to 10 and a master control unit for controlling a control unit of each dimming system. system.   A plurality of sets of light control systems according to any one of claims 1 to 10, wherein control units in each light control system are connected to each other, and each control unit or any one control unit is connected to another control unit. Large-scale dimming system characterized by controlling the unit.

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