JP6994892B2 - Lighting control device and program - Google Patents

Description

The present invention relates to a lighting control device and a program for controlling the emission color of lighting.

Conventionally, in a broadcasting production site, a plurality of lighting fixtures that irradiate light of the same color as the environment color are used in order to create an environment of a unified hue for the entire predetermined area. In general, a predetermined color temperature is specified in advance for a lighting fixture, and by using a plurality of lighting fixtures having the same specified color temperature, it is possible to realize an environment with a unified hue as a whole.

Further, a system has been proposed in which the emission color of each luminaire is controlled by remotely controlling a plurality of luminaires (see, for example, Patent Document 1). The system comprises a remote controller, an equipment control unit connected to the remote controller via a wireless network, and a plurality of luminaires connected to the equipment control unit via a wireless or wired network. ..

The remote controller transmits a control signal for adjusting the emission color to the equipment control unit, and the equipment control unit transmits a command corresponding to the control signal to the luminaire to be controlled. Then, the luminaire is controlled in its emission color so as to have a desired hue by adjusting the output current of each drive circuit of the multicolor LED light source according to the received command.

Japanese Unexamined Patent Publication No. 2012-195286

As mentioned above, at the production site of broadcasting, an environment of a unified color tone is created as a whole by using a plurality of lighting fixtures having the same color temperature specified in advance.

However, even if the predetermined color temperature is the same, the actual color temperature differs between the luminaires because there is an error depending on the luminaire. This is not so problematic when using a plurality of luminaires provided by the same manufacturer, but is particularly remarkable when using a plurality of luminaires provided by different manufacturers. For this reason, there is a problem that even if a plurality of lighting fixtures having the same color temperature are used, it may not be possible to realize an environment with a unified hue as a whole.

In order to deal with this, the operator determines the color temperature of each of the plurality of luminaires by directly determining the emission color of the lighting with the eyes or indirectly by the camera image. It was necessary to manually adjust multiple parameters to set. However, with this method, it is difficult and time-consuming to precisely adjust a plurality of parameters for a plurality of lighting fixtures.

Further, by using the method of Patent Document 1 described above, it is possible to set a predetermined color temperature set by a remote controller as a set value and match each color temperature of a plurality of lighting fixtures with the set value. it is conceivable that. However, as described above, since there is a color temperature error depending on the luminaire, even if the color temperature is controlled to the same set value, the color temperature will be slightly different in a plurality of luminaires, and as a result, the color temperature will be slightly different. , It is not possible to realize a unified color environment as a whole.

Therefore, the present invention has been made to solve the above-mentioned problems, and an object thereof is to realize an environment of a unified hue as a whole by controlling the emission color of each of a plurality of lighting fixtures. To provide lighting control devices and programs.

In order to solve the above-mentioned problems, the lighting control device according to claim 1 is a lighting control device for controlling the emission color of a plurality of lighting fixtures, in which a setting unit for setting a predetermined color value as a reference value and the plurality of lightings. A subtraction unit for each system corresponding to each of the fixtures and a control unit for each system corresponding to each of the plurality of lighting fixtures are provided, and the setting unit measures the color of ambient light in a predetermined area. Set to the reference value, or set the measurement result of the emission color in one of the plurality of lighting fixtures to the reference value, set a new reference value based on the reference value, and set the system. The subtraction unit for each unit calculates the difference between the new reference value set by the setting unit and the measurement result of the emission color of the luminaire in the system, and the control unit for each system calculates the difference between the system. When the operation amount is calculated so that the difference calculated by the subtraction unit of the above becomes 0 or becomes small, the emission color of the lighting equipment of the system is operated by the operation amount, and the difference is the minimum. The operation amount is determined to be a fixed operation amount .

Further, in the lighting control device according to claim 1 , the lighting control device according to claim 2 uses the operation amount as a hue (hue) and saturation (saturation), or a hue (hue), saturation (saturation) and. It is characterized in that it is an intensity, or a color temperature, or a color temperature and a green component, or an RGB value, or an RGB value and an intensity.

Further, the lighting control device according to claim 3 corresponds to a setting unit that sets a predetermined color value as a reference value in a lighting control device that controls emission colors of a plurality of lighting fixtures, and each of the plurality of lighting fixtures. A subtraction unit for each system and a control unit for each system corresponding to each of the plurality of lighting fixtures are provided, and the subtraction unit for each system has the reference value set by the setting unit and the reference value in the system. The difference between the measurement result of the emission color of the lighting equipment and the measurement result is calculated, and the control unit for each system operates so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. Is calculated, the emission color of the luminaire of the system is manipulated by the operation amount, the operation amount when the difference is the minimum is determined as the fixed operation amount, and the hue (hue) is applied to the plurality of luminaires. ) And a luminaire whose emission color is controlled by saturation (saturation), and the control unit of the system of the luminaire determines the emission color of the luminaire at a predetermined value of the saturation (saturation). In the operating state, the hue is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, and the hue (hue) when the difference is the minimum ( Hugh) is determined to be a fixed hue, and the difference calculated by the subtraction unit of the system is set to 0 in a state where the emission color of the lighting fixture is operated by the fixed hue. The saturation is calculated so as to be small or small, and the saturation when the difference is the minimum is determined as the fixed saturation, and the fixed hue and the above are determined. It is characterized in that the emission color of the luminaire is controlled by a fixed saturation.

Further, the lighting control device according to claim 4 corresponds to a setting unit that sets a predetermined color value as a reference value in a lighting control device that controls emission colors of a plurality of lighting fixtures, and each of the plurality of lighting fixtures. A subtraction unit for each system and a control unit for each system corresponding to each of the plurality of lighting fixtures are provided, and the subtraction unit for each system has the reference value set by the setting unit and the reference value in the system. The difference between the measurement result of the emission color of the lighting equipment and the measurement result is calculated, and the control unit for each system operates so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. Is calculated, the emission color of the luminaire of the system is operated by the operation amount, the operation amount when the difference is the minimum is determined as the fixed operation amount, and the color temperature and the color temperature and the plurality of luminaires are used. A luminaire whose emission color is controlled by a green component is included, and the control unit of the system of the luminaire operates the luminescence color of the luminaire with a predetermined value of the green component. The color temperature is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, the color temperature when the difference is the minimum is determined as the fixed color temperature, and the fixed color temperature is determined. While operating the emission color of the luminaire at the color temperature, the green component is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes smaller, and the green component is calculated. It is characterized in that the green component when the difference is the minimum is determined as a fixed green component, and the emission color of the luminaire is controlled by the fixed color temperature and the fixed green component.

Further, the lighting control device according to claim 5 corresponds to a setting unit that sets a predetermined color value as a reference value in a lighting control device that controls emission colors of a plurality of lighting fixtures, and each of the plurality of lighting fixtures. A subtraction unit for each system and a control unit for each system corresponding to each of the plurality of lighting fixtures are provided, and the subtraction unit for each system has the reference value set by the setting unit and the reference value in the system. The difference between the measurement result of the emission color of the lighting equipment and the measurement result is calculated, and the control unit for each system operates so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. Is calculated, the emission color of the luminaire of the system is manipulated by the operation amount, the operation amount when the difference is the minimum is determined as the fixed operation amount, and the plurality of luminaires are based on the RGB value. A luminaire whose emission color is manipulated is included, and each of the three component values constituting the RGB value is set as a first operation amount, a second operation amount, and a third operation amount, and the luminaire Calculated by the subtraction unit of the system while the control unit of the system is operating the emission color of the luminaire with the predetermined value of the second operation amount and the predetermined value of the third operation amount. The first operation amount is calculated so that the difference becomes 0 or becomes smaller, and the first operation amount when the difference is the minimum is determined as the first fixed operation amount. In a state where the emission color of the luminaire is operated by the predetermined values of the first fixed operation amount and the third operation amount, the difference calculated by the subtraction unit of the system becomes 0. Alternatively, the second operation amount is calculated so as to be smaller, the second operation amount when the difference is the minimum is determined as the second fixed operation amount, and the first fixed operation amount and the second operation amount are determined. While the emission color of the luminaire is being operated with the fixed operation amount of 2, the third operation is such that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. The amount is calculated, the third operation amount when the difference is the minimum is determined as the third fixed operation amount, and the first fixed operation amount, the second fixed operation amount, and the third fixed operation amount are determined. It is characterized in that the emission color of the lighting fixture is manipulated by the amount of operation.

Further, the lighting control device according to claim 6 corresponds to a setting unit for setting a predetermined color value as a reference value and each of the plurality of lighting devices in the lighting control device for controlling the emission color of the plurality of lighting devices. A subtraction unit for each system and a control unit for each system corresponding to each of the plurality of lighting fixtures are provided, and the subtraction unit for each system has the reference value set by the setting unit and the reference value in the system. The difference from the measurement result of the emission color of the lighting equipment is calculated, and the control unit for each system operates so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. Is calculated, the emission color of the lighting fixture of the system is operated by the operation amount, the operation amount when the difference is the minimum is determined as the fixed operation amount, and the reference value and the measurement result are RGB values, respectively. The plurality of lighting fixtures include a lighting fixture in which the emission color is controlled by hue (hue), saturation (saturation), and intensity (intensity), and the control unit of the system of the lighting fixture is used. , The maximum value among the values of each component constituting the RGB value of the reference value is set as the reference component value of the first component, and the predetermined value of the hue (hue) and the predetermined value of the saturation (saturation) are used. While operating the emission color of the lighting equipment, the intensity is decremented, and the difference between the value of the first component and the reference component value of the first component in the measurement result is the minimum. The intensity is determined to be a fixed operation amount, and the minimum value among the values of each component constituting the RGB value of the reference value is the reference component value of the third component. The saturation is incremented while the emission color of the lighting fixture is being operated with a predetermined value of the hue (hue) and a fixed operation amount of the intensity (intensity). The saturation that minimizes the difference between the value of the third component and the reference component value of the third component in the measurement result is obtained, and the saturation is determined as a fixed operation amount. Of the values of each component constituting the RGB value of the reference value, the remaining values other than the maximum value and the minimum value are set as the reference component value of the second component, and the fixed operation amount of the intensity and the intensity are fixed. The initial value of hue is set based on the fixed operation amount of the saturation, and the illumination is set by the fixed operation amount of the intensity and the fixed operation amount of the saturation. While operating the emission color of the instrument, the above color The phase (hue) is incremented from the initial value to obtain the hue (hue) that minimizes the difference between the value of the second component and the reference component value of the second component in the measurement result, and the hue is obtained. (Hugh) is determined as a fixed operation amount, and the emission color of the luminaire is determined by the fixed operation amount of the intensity, the fixed operation amount of the saturation, and the fixed operation amount of the hue. It is characterized by operating.

Further, the lighting control device according to claim 7 corresponds to a setting unit that sets a predetermined color value as a reference value in a lighting control device that controls emission colors of a plurality of lighting fixtures, and each of the plurality of lighting fixtures. A subtraction unit for each system and a control unit for each system corresponding to each of the plurality of lighting fixtures are provided, and the subtraction unit for each system has the reference value set by the setting unit and the reference value in the system. The difference between the measurement result of the emission color of the lighting equipment and the measurement result is calculated, and the control unit for each system operates so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. Is calculated, the emission color of the lighting equipment of the system is operated by the operation amount, the operation amount when the difference is the minimum is determined as the fixed operation amount, and the reference value and the measurement result are RGB values, respectively. The plurality of luminaires include a luminaire whose emission color is controlled by an RGB value, and a control unit of the luminaire system controls the value of each component constituting the RGB value of the reference value. The maximum value is set as the reference component value of the first component, and the emission color of the luminaire is operated with the predetermined value of each component for the remaining two components other than the first component. The operation amount of the first component is decremented, and the first operation amount that minimizes the difference between the value of the first component and the reference component value of the first component in the measurement result is obtained, and the first operation amount is obtained. The operation amount of 1 is determined as a fixed operation amount, the minimum value among the values of the components constituting the RGB value of the reference value is set as the reference component value of the third component, and the fixed operation amount of the first component and the fixed operation amount of the first component are set. While the emission color of the lighting fixture is being operated with the remaining predetermined values of the second component, the operation amount of the third component is incremented, and the value of the third component and the third component of the measurement result are used. The operation amount of the third component that minimizes the difference from the reference component value of the above is obtained, the operation amount of the third component is determined as a fixed operation amount, and each component constituting the RGB value of the reference value is determined. Of the values, the maximum value and the remaining values other than the minimum value are set as the reference component values of the second component, and the first component is fixed based on the fixed operation amount of the first component and the fixed operation amount of the third component. In a state where the initial value of the operation amount of the two components is set and the emission color of the luminaire is operated by the fixed operation amount of the first component and the fixed operation amount of the third component, the second component The operation amount is incremented from the initial value, and the operation amount of the second component that minimizes the difference between the value of the second component and the reference component value of the second component of the measurement result is obtained, and the operation amount is obtained. The operation amount of 2 components is decided as a fixed operation amount It is characterized in that the emission color of the luminaire is controlled by the fixed operation amount of the first component, the fixed operation amount of the second component, and the fixed operation amount of the third component.

Further, the lighting control device according to claim 8 corresponds to a setting unit that sets a predetermined color value as a reference value in a lighting control device that controls emission colors of a plurality of lighting fixtures, and each of the plurality of lighting fixtures. A subtraction unit for each system and a control unit for each system corresponding to each of the plurality of lighting fixtures are provided, and the subtraction unit for each system has the reference value set by the setting unit and the reference value in the system. The difference between the measurement result of the emission color of the lighting equipment and the measurement result is calculated, and the control unit for each system operates so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. Is calculated, the emission color of the lighting equipment of the system is operated by the operation amount, the operation amount when the difference is the minimum is determined as the fixed operation amount, and the reference value and the measurement result are RGB values, respectively. The first process is a process in which the new control unit for each system calculates the absolute value of the difference as the absolute difference value for the difference for each RGB component calculated by the subtraction unit in the system. The second step is to set the operation amount of the component in order so that the difference absolute value is within the predetermined allowable range for each component, and to operate the emission color of the lighting equipment of the system with the operation amount. The process is characterized in that the first process and the second process are repeated for six combinations in which the order of each component of RGB in the second process is changed.

Further, the lighting control device according to claim 9 is the lighting control device according to claim 8 , when the operation amount of the component is the lower limit value when the operation amount of the component is reduced in the second process. If the manipulated variable of at least one of the other two components is increased and the manipulated variable of the component is the upper limit when the manipulated variable of the component is increased, the manipulated variable of at least one of the other two components is increased. It is characterized in that it is a process of reducing.

Further, the lighting control program according to claim 10 is characterized in that the computer functions as the lighting control device according to any one of claims 1 to 9 .

As described above, according to the present invention, by controlling the emission color of each of a plurality of lighting fixtures, it is possible to realize an environment of a unified hue as a whole.

It is a schematic diagram which shows the configuration example of the whole system which controls the emission color of lighting in a broadcasting production site. It is a flowchart which shows the processing example of a lighting control device. It is a block diagram which shows the structural example of the lighting control apparatus of Example 1 which operates in an ambient light measurement mode. It is a block diagram which shows the structural example of the lighting control apparatus of Example 2 which operates in an instrument light measurement mode. It is a flowchart which shows the processing example of HS (hue and saturation) control by a control unit. It is a flowchart which shows the processing example of K (color temperature) control by a control unit. It is a flowchart which shows the processing example of KG (color temperature and green component) control by a control unit. It is a flowchart which shows the processing example of RGB control by a control unit. It is a block diagram which shows the structural example of a lighting processing apparatus. It is a flowchart which shows the specific example of HSI (hue, saturation and intensity) control. It is a flowchart which shows the specific example of RGB control. It is a flowchart which shows the other specific example of RGB control. It is a flowchart which shows the detail of the RGB value input and the update process such as a difference. It is a flowchart which shows the detail of the R processing routine. It is a flowchart which shows the detail of R subtraction processing. It is a flowchart which shows the detail of R addition processing. It is a flowchart which shows the detail of a G processing routine. It is a flowchart which shows the detail of G subtraction processing. It is a flowchart which shows the detail of G addition processing. It is a flowchart which shows the detail of B processing routine. It is a flowchart which shows the detail of the B subtraction process. It is a flowchart which shows the detail of B addition processing.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
[Overall system]
FIG. 1 is a schematic diagram showing a configuration example of an overall system for controlling the emission color of lighting at a broadcasting production site. This system realizes a unified hue environment for the entire predetermined area by making the emission colors of a plurality of lighting fixtures follow the reference ambient light or the like at the production site where a drama or the like is recorded.

This system includes a lighting control device 1, an ambient light measuring device 2, a lighting processing device 3-1 to 3-N, and a lighting fixture 4-1 to 4-N corresponding to the lighting processing device 3-1 to 3-N. Is configured with. N is a positive integer greater than or equal to 2. The ambient light measuring device 2 and the lighting control device 1 are both portable devices and are possessed by the operator OP.

The lighting control device 1, the ambient light measuring device 2, and the lighting processing devices 3-1 to 3-N are connected by a wireless communication path such as Wi-Fi (Wi-Fi, registered trademark) and Bluetooth (Bluetooth, registered trademark). ..

The operator OP is a process of measuring ambient light with respect to the lighting control device 1 by moving the ambient light measuring device 2 to a measurement location of the ambient light while possessing it and operating a switch (not shown) in the production site. To execute. Further, by operating the lighting control device 1 while possessing the lighting control device 1, the operator OP causes the lighting control device 1 to perform various initial settings such as an operation amount described later, follow-up control to ambient light, and the like. , Manually fine-tune the emission color of the lighting fixtures 4-1 to 4-N.

The lighting control device 1 is, for example, a tablet-type operation terminal, and is possessed by the operator OP. The lighting control device 1 inputs the measurement result of the color of the ambient light (hereinafter referred to as the measurement result of the ambient light) from the ambient light measuring device 2. Further, the lighting control device 1 inputs the measurement result of the emission color of the lighting fixtures 4-1 to 4-N (hereinafter, referred to as the measurement result of the fixture light) from the lighting processing devices 3-1 to 3-N. The lighting control device 1 sets a preset measurement result among the measurement result of ambient light and the measurement result of a plurality of fixture lights as a reference value.

The lighting control device 1 calculates the respective operation amounts so that the difference between the reference value and the measurement results of the plurality of fixture lights to be controlled becomes 0, and the lighting processing devices 3-1 to 3- Send to N.

As a result, it is possible to control a plurality of fixture lights to be controlled, and the measurement results of the plurality of fixture lights follow the reference value, and as a result, the production site becomes an environment of a unified hue as a whole.

The ambient light measuring device 2 is, for example, a handy type device, and is possessed by the operator OP. The ambient light measuring device 2 measures the color of the ambient light and transmits the measurement result of the ambient light to the lighting control device 1.

The lighting processing devices 3-1 to 3-N are provided corresponding to the lighting fixtures 4-1 to 4-N, measure the color of the fixture light, and transmit the measurement result of the fixture light to the lighting control device 1. Further, the lighting processing devices 3-1 to 3-N receive the operation amount from the lighting control device 1, and irradiate the lighting fixtures 4-1 to 4-N with the fixture light corresponding to the operation amount.

The lighting fixtures 4-1 to 4-N are fixtures configured by, for example, LEDs, are provided corresponding to the lighting processing devices 3-1 to 3-N, and are operated from the lighting processing devices 3-1 to 3-N. Enter the amount and irradiate the instrument light corresponding to the operation amount.

The lighting processing devices 3-1 to 3-N may be installed outside the lighting fixtures 4-1 to 4-N, or may be installed inside the lighting fixtures 4-1 to 4-N. You may do it. The same applies to FIGS. 3, 4, and 9 described later.

[Processing of lighting control device 1]
Next, the processing of the lighting control device 1 shown in FIG. 1 will be described. FIG. 2 is a flowchart showing a processing example of the lighting control device 1. The lighting control device 1 performs initial settings according to the key operation of the operator OP (step S201). As initial settings, the lighting control device 1 has, for example, lighting fixtures 4-1 to 4-N to be controlled and the order of control, types of operation amounts of lighting fixtures 4-1 to 4-N, initial values of operation amounts, and so on. Set the lighting fixture 4-n, etc., which is the reference in the fixture light measurement mode. n is a numerical value of any one of 1 to N.

The types of operations of the lighting fixtures 4-1 to 4-N include, for example, HS (hue and saturation), HSI (hue, saturation and intensity), K (color temperature (Kelvin)), and KG (color temperature). (Kelvin) and green component), RGB (red component, green component and blue component), and RGBI (red component, green component, blue component and intensity).

HS is an operation amount when the emission color of the illumination is controlled by hue (Hue) and saturation (Saturation), and HSI is the operation amount when the emission color of the illumination is controlled by hue, saturation and intensity (Intensity:). It is the amount of operation when controlling by intensity). K is an operation amount when the emission color of the illumination is controlled by the color temperature. Further, KG is an operation amount when the emission color of the illumination is controlled by the color temperature and the green component. The color is determined by this green component. Further, RGB is an operation amount when the emission color of the illumination is controlled by the R component, the G component and the B component, and RGBI controls the emission color of the illumination by the R component, the G component, the B component and the intensity. It is the amount of operation when doing.

Hereinafter, control when HS is used as an operation amount, control when HSI is used as an operation amount, control when K is used as an operation amount, control when KG is used as an operation amount, and when RGB is used as an operation amount. For convenience of explanation, control and control when RGBI is used as an operation amount are referred to as HS control, HSI control, K control, KG control, RGB control, and RGBI control.

The lighting control device 1 applies an operation amount (HS, HSI, K, KG, RGB, RGBI) according to the specifications of the lighting fixtures 4-1 to 4-N for each of the lighting fixtures 4-1 to 4-N. It is calculated and one of HS control, HSI control, K control, KG control, RGB control and RGBI control is performed.

The lighting control device 1 determines whether the mode is the ambient light measurement mode or the instrument light measurement mode according to the key operation of the operator OP (step S202). When the lighting control device 1 determines in step S202 that the mode is the ambient light measurement mode (step S202: ambient light measurement mode), the lighting control device 1 measures the color of the ambient light using the ambient light measuring device 2 (step S203). ). The lighting control device 1 receives the measurement result (environmental color value) of the ambient light from the ambient light measuring device 2.

On the other hand, when the lighting control device 1 determines in step S202 that the mode is the instrument light measurement mode (step S202: instrument light measurement mode), the illumination that becomes the reference in the instrument light measurement mode set in step S201. Using the lighting processing device 3-n corresponding to the fixture 4-n, the fixture light of the lighting fixture 4-n is measured (step S204). The lighting control device 1 receives the measurement result (value of the emission color) of the fixture light of the lighting fixture 4-n from the lighting processing device 3-n.

The lighting control device 1 sets the measurement result of the ambient light measured in step S203 as a reference value in the ambient light measurement mode, and sets the fixture light of the lighting fixture 4-n measured in step S204 in the fixture light mode. The measurement result is set as a reference value (step S205). As a result, a standard value of a unified hue is set at the production site as a whole.

The lighting control device 1 selects the first lighting fixture 4-1 to be controlled, which is set in step S201 (step S206). Then, the lighting control device 1 calculates and outputs the operation amount so that the difference between the reference value set in step S205 and the measurement result of the fixture light of the lighting fixture 4-1 becomes 0 (the operation amount is calculated and output. Step S207). As a result, the lighting fixture 4-1 changes the emission color based on the operation amount output by the lighting control device 1.

The lighting control device 1 determines whether or not the difference between the reference value and the measurement result of the fixture light of the lighting fixture 4-1 is the minimum value (step S208). Then, when the lighting control device 1 determines in step S208 that the difference is not the minimum value (step S208: N), the lighting control device 1 proceeds to step S207 and performs the process of step S207. By such feedback control, the processes of steps S207 and S208 are repeated, and the measurement result of the fixture light of the lighting fixture 4-1 approaches the reference value.

When the lighting control device 1 determines in step S208 that the difference is the minimum value (step S208: Y), the lighting control device 1 determines the output level of the manipulated variable (step S209). As a result, the lighting control device 1 continues to output a fixed operation amount (fixed operation amount) at the output level determined in step S209, and operates the emission color of the lighting fixture 4-1. Then, the luminaire 4-1 becomes the illumination of the emission color based on the fixed operation amount, and the measurement result of the luminaire light of the luminaire 4-1 becomes a constant value.

The lighting control device 1 is described in steps S207 to S209 for all the lighting fixtures 4-1 to 4-N (in the case of the fixture light measurement mode, the lighting fixtures 4-1 to 4-N excluding the lighting fixture 4-n). It is determined whether or not the process is completed (step S210).

When the lighting control device 1 determines in step S210 that the processing of all the lighting fixtures 4-1 to 4-N has not been completed (step S210: N), the second lighting fixture 4-to be controlled. 2 is selected (step S211), and the process proceeds to step S207. Then, the lighting control device 1 performs the processes of steps S207 to S209 for the lighting fixture 4-2.

In this way, the processes of steps S207 to S209 are performed for all the lighting fixtures 4-1 to 4-N to be controlled, and the operation amount is output for each of the lighting fixtures 4-1 to 4-N. The level is decided.

As a result, the fixture light of the lighting fixtures 4-1 to 4-N to be controlled is controlled, and the measurement result of each fixture light follows the reference value. As a result, the production site has a unified color tone as a whole. It becomes the environment of.

When the lighting control device 1 determines in step S210 that the processing of all the lighting fixtures 4-1 to 4-N is completed (step S210: Y), the operator OP fine-tunes the operation amount (step). S212). Specifically, the lighting control device 1 changes the operation amount at the output level determined in step S209 for each of the lighting fixtures 4-1 to 4-N according to the operation of the operator OP, and manually operates the amount. Output. As a result, the luminaires 4-1 to 4-N change the emission color based on the amount of manual operation by the operator OP. In this case, feedback control is not performed.

In the processing example shown in FIG. 2, the lighting control device 1 sequentially performs feedback control for each of the lighting fixtures 4-1 to 4-N to be controlled, and determines the output level of the operation amount. I did it. On the other hand, the lighting control device 1 may simultaneously perform feedback control on all of the lighting fixtures 4-1 to 4-N to be controlled to determine the output level of the operation amount.

[Lighting control device 1 / Ambient light measurement mode]
Next, in FIG. 1, the lighting control device 1 that operates in the ambient light measurement mode will be described. FIG. 3 is a block diagram showing a configuration example of the lighting control device 1 of the first embodiment operating in the ambient light measurement mode. The lighting control device 1-1 includes a setting unit 10, a subtraction unit 11-1 to 11-N, a control unit 12-1 to 12-N, and a communication unit 13-0, 13-1 to 13-N. .. The subtraction units 11-1 to 11-N, the control units 12-1 to 12-N, and the communication units 13-0, 13-1 to 13-N constitute the first to Nth systems.

The lighting control device 1-1 is a switching unit 14-1 to 14- between the control units 12-1 to 12-N and the communication units 13-1 to 13-N in the first to Nth systems. N is provided, but it is omitted for convenience of explanation. The switching units 14-1 to 14-N switch between the output of the automatic operation amount and the output of the manual operation amount in each system.

The setting unit 10 performs the initial setting shown in step S201 of FIG. 2 according to the operation of the operator OP. Further, the setting unit 10 sets the initial value of the operation amount to the control unit 12- in order to obtain the fixture light of the initial emission color for each of the lighting fixtures 4-1 to 4-N according to the operation of the operator OP. Output to 1-12-N. The initial value of the operation amount is transmitted to the lighting processing devices 3-1 to 3-N via the switching units 14-1 to 14-N and the communication units 13-1 to 13-N (not shown). Then, the lighting fixtures 4-1 to 4-N change to a light emitting color according to the initial value of the manipulated variable.

The setting unit 10 sets a switching unit (not shown) for manually setting the operation amount in order to make the lighting fixture light of the manual emission color for each of the lighting fixtures 4-1 to 4-N according to the operation of the operator OP. Output to 14-1 to 14-N. The manually set operation amount is transmitted to the lighting processing devices 3-1 to 3-N via the switching units 14-1 to 14-N and the communication units 13-1 to 13-N (not shown). Then, the lighting fixtures 4-1 to 4-N change to a light emitting color according to the amount of operation.

In the ambient light measurement mode, the setting unit 10 inputs the RGB value of the ambient light measured by the ambient light measuring device 2 from the communication unit 13-0 in order to measure the ambient light according to the operation of the operator OP. Then, the setting unit 10 sets the RGB value of the ambient light to the reference value RGB_S, and outputs the reference value RGB_S to the subtraction units 11-1 to 11-N.

The setting unit 10 sequentially outputs control signals (not shown) to the control units 12-1 to 12-N in order to operate the first to Nth systems in order. Specifically, as shown in the flowchart of FIG. 2, the setting unit 10 outputs a control signal to the control unit 12-1 in order to operate the first system. Then, the setting unit 10 controls the control signal 12-2 in order to operate the second system when the output level of the operation amount is determined by the control unit 12-1 (step S209 in FIG. 2). Output to. In this way, the first to Nth systems are operated in order, and the output levels of the respective operation amounts are determined by the control units 12-1 to 12-N.

The subtraction unit 11-1 inputs the reference value RGB_S from the setting unit 10, and also inputs the RGB value of the fixture light of the lighting fixture 4-1 measured by the lighting processing device 3-1 from the communication unit 13-1. .. Then, the subtraction unit 11-1 subtracts the RGB value of the instrument light from the reference value RGB_S, and outputs the difference ΔRGB which is the subtraction result to the control unit 12-1.

Similar to the subtraction unit 11-1, the subtraction units 11-2 to 11-N control the difference ΔRGB between the reference value RGB_S and the RGB value of the fixture light of the corresponding lighting fixtures 4-2 to 4-N. Output to units 12-2 to 12-N.

The control unit 12-1 inputs the difference ΔRGB between the reference value RGB_S and the RGB value of the instrument light from the subtraction unit 11-1, calculates the operation amount so that the difference ΔRGB becomes 0, and calculates the operation amount. Output to communication unit 13-1. Further, when the control unit 12-1 determines that the difference ΔRGB is the minimum, the control unit 12-1 outputs the operation amount at the minimum as a fixed operation amount to the communication unit 13-1.

The reference value RGB_S indicates the reference value of each component of RGB, the RGB value of the instrument light indicates the value of each component of RGB, and the difference ΔRGB indicates the difference value of each component of RGB. To calculate the operation amount so that the difference ΔRGB becomes 0 means to calculate the operation amount so that the difference value of each component of RGB becomes 0. Further, determining that the difference ΔRGB is the minimum means, for example, determining that the difference of the first component of RGB is the minimum, determining that the difference of the second component is the minimum, and the third. It means that it is determined that the difference between the components of is the minimum. In this case, the control unit 12-1 may determine, for example, whether or not the sum of the difference values in each component of RGB (or the sum of the absolute values of the difference values in each component of RGB) is the minimum. good.

Similar to the control unit 12-1, the control units 12-2 to 12-N calculate the operation amount so that the difference ΔRGB between the reference value RGB_S and the RGB value of the fixture light becomes 0, and the communication unit 13 It is output to -2 to 13-N, and the operation amount when the difference ΔRGB is the minimum is output as a fixed operation amount. The details of the processing of the control units 12-1 to 12-N will be described later.

The control units 12-1 to 12-N determine the start of control when a control signal is input from the setting unit 10, and at the start of control, the initial value of the operation amount initially set in step S201 of FIG. Is input from the setting unit 10 and output. Further, the control units 12-1 to 12-N calculate the operation amount corresponding to the reference value RGB_S using a preset calculation formula or table, and output this as the initial value of the operation amount. May be good. The preset arithmetic expression or table defines the relationship between the values of the R component, the G component, and the B component constituting the reference value RGB_S and the manipulated variable.

When performing HS control, for example, the control units 12-1 to 12-N calculate Hugh H and saturation S corresponding to the reference value RGB_S, and use these as the initial value of the operation amount of Hugh H and the operation amount of saturation S. Output as the initial value. Further, when the control units 12-1 to 12-N perform RGB control, for example, the values of the R component, the G component, and the B component constituting the reference value RGB_S are set to the initial value of the operation amount of the R component and the G component, respectively. It is output as the initial value of the operation amount of and the operation amount of the B component. In this case, the control units 12-1 to 12-N may multiply each initial value by each preset coefficient and output the multiplication result as the initial value.

The communication unit 13-0 receives the RGB value of the ambient light measured by the ambient light measuring device 2 from the ambient light measuring device 2 via the wireless communication path, and outputs the RGB value of the ambient light to the setting unit 10. ..

The communication unit 13-1 transmits and receives a lighting control signal to and from the communication unit 30 provided in the lighting processing devices 3-1 to 3-N. Specifically, the communication unit 13-1 inputs an operation amount from the control unit 12-1, converts the operation amount into a lighting control signal, and converts the lighting control signal into a lighting processing device 3- via a wireless communication path. Send to 1. Further, the communication unit 13-1 receives the RGB value of the fixture light of the lighting fixture 4-1 measured by the lighting processing device 3-1 from the lighting processing device 3-1 via the wireless communication path, and receives the fixture light. The RGB value of is output to the subtraction unit 11-1.

Similar to the communication unit 13-1, the communication units 13-2 to 13-N input the operation amount from the control units 12-2 to 12-N, and send the lighting control signal to the lighting processing device via the wireless communication path. Send to 3-2-3-N. Further, the communication units 13-2 to 13-N, like the communication unit 13-1, are connected to the lighting fixtures 4-2 to 4-N from the lighting processing devices 3-2-3 to N via the wireless communication path. The RGB value of the instrument light is received, and the RGB value of the instrument light is output to the subtraction units 11-2 to 11-N.

As a result, the fixture light of the lighting fixtures 4-1 to 4-N to be controlled is controlled, and the RGB value of each fixture light follows the reference value RGB_S, and as a result, the production site is unified as a whole. It becomes an environment of shades.

[Lighting control device 1 / Instrument light measurement mode]
Next, in FIG. 1, the lighting control device 1 that operates in the instrument light measurement mode will be described. FIG. 4 is a block diagram showing a configuration example of the lighting control device 1 of the second embodiment that operates in the fixture light measurement mode. Similar to the lighting control device 1-1 shown in FIG. 3, the lighting control device 1-2 is composed of the first to Nth N systems, and has a setting unit 10', a subtraction unit 11-1, ... ..., 11-n, ..., 11-N, control unit 12-1, ... 12-n, ..., 12-N, communication unit 13-0, 13-1, ..., 13 -N, ..., 13-N and a switching unit 14-n are provided. The solid line in the component indicates that it operates in the instrument light measurement mode, and the dotted line indicates that it does not operate in the instrument light measurement mode.

Further, the lighting fixture 4-n is used as a reference fixture in the fixture light measurement mode. Therefore, the switching unit 14-n is explicitly shown in the nth system of the lighting control device 1-2. The lighting control device 1-2 is located between the control units 12-1 to 12-N and the communication units 13-1 to 13-N in the first to Nth systems, similarly to the lighting control device 1-1. The switching units 14-1 to 14-N are provided, but the parts other than the switching units 14-n are omitted for convenience of explanation.

The setting unit 10'performs the same processing as the setting unit 10 shown in FIG. Here, the setting unit 10'outputs a switching signal * n indicating manual operation to the switching unit 14-n when the emission color is manually changed for the luminaire 4-n according to the operation of the operator OP. After that, the manually set manual operation amount #n is output to the switching unit 14-n. The manually set manual operation amount #n is transmitted to the lighting processing device 3-n via the switching unit 14-n and the communication unit 13-n. Then, the lighting fixture 4-n changes to a light emitting color according to the amount of operation. The same applies to the lighting fixtures 4-1 to 4-N excluding the lighting fixture 4-n.

In the fixture light measurement mode, the setting unit 10'manually changes the emission color of the lighting fixture 4-n, and then measures the fixture light of the reference lighting fixture 4-n according to the operation of the operator OP. do. Specifically, the setting unit 10'inputs the RGB value of the fixture light of the lighting fixture 4-n measured by the lighting processing device 3-n from the communication unit 13-n. Then, the setting unit 10'sets the RGB value of the fixture light of the lighting fixture 4-n to the reference value RGB_S, and outputs the reference value RGB_S to the subtraction units 11-1 to 11-N excluding the subtraction unit 11-n. do.

The setting unit 10'sends a control signal (not shown) to the control units 12-1 to 12-N excluding the control unit 12-n in order to operate the first to Nth systems excluding the nth system in order. Output sequentially.

The subtraction units 11-1 to 11-N, the control units 12-1 to 12-N, and the communication units 13-0, 13-1 to 13-N are the same as the respective components shown in FIG. The description is omitted here.

As a result, the fixture light of the lighting fixtures 4-1 to 4-N to be controlled except for the lighting fixture 4-n is controlled. Then, the RGB value of each fixture light follows the reference value RGB_S with the measurement result of the fixture light of the reference lighting fixture 4-n as the reference value RGB_S. As a result, the production site as a whole becomes an environment with a uniform hue.

[Control unit 12]
Next, the processing of the control units 12-1 to 12-N (collectively referred to as the control unit 12) shown in FIGS. 3 and 4 will be described in detail. The control unit 12 processes according to the type of operation amount (HS, HSI, K, KG, RGB, RGBI) of the lighting fixtures 4-1 to 4-N (collectively referred to as the lighting fixture 4), that is, lighting. Perform processing according to the specifications of the fixtures 4-1 to 4-N. The type of processing is determined in the initial setting according to the type of operation amount of the lighting fixture 4. The subtraction units 11-1 to 11-N are collectively referred to as the subtraction unit 11, the communication units 13-1 to 13-N are collectively referred to as the communication unit 13, and the lighting processing devices 3-1 to 3-N are collectively referred to as the communication unit 13. Let it be the lighting processing device 3. Hereinafter, five types of processing of the control unit 12, HS control, HSI control, K control, KG control, and RGB control will be described as examples.

(HS control)
First, HS control will be described. As described above, the HS control is a method of controlling the emission color of the illumination by using the Hugh H and the saturation S. The manipulated variables are Hugh H and Saturation S. This HS control is applicable to the luminaire 4 having a specification with Hugh H and saturation S as input parameters.

FIG. 5 is a flowchart showing an example of HS control processing by the control unit 12. The control unit 12 outputs the initially set operation amount (predetermined value of Hugh H and predetermined value of saturation S) to the communication unit 13 (step S501). As a result, the predetermined value of Hugh H and the predetermined value of saturation S are transmitted from the lighting control device 1 to the lighting processing device 3 via the wireless communication path, and are transmitted from the lighting processing device 3 to the lighting fixture 4. Then, the lighting fixture 4 emits light with a light emitting color corresponding to a predetermined value of Hugh H and a predetermined value of saturation S, and the RGB value of the light emitting color is a lighting control device from the lighting processing device 3 via a wireless communication path. It is sent to 1.

The control unit 12 calculates Hugh H so that the difference ΔRGB = 0 between the reference value RGB_S and the RGB value (RGB value of the measurement result) received from the lighting processing device 3. Then, the control unit 12 outputs the calculated Hugh H to the communication unit 13 (step S502). In this case, the control unit 12 outputs the predetermined value of saturation S as a fixed value to the communication unit 13.

For example, when the difference ΔRGB is positive, that is, when the reference value RGB_S> the RGB value of the measurement result, the control unit 12 has a positive predetermined value according to the magnitude of the difference ΔRGB so that the RGB value of the measurement result becomes large. Is added to Hugh H, and Hugh H as a result of the addition is output to the communication unit 13. On the other hand, when the difference ΔRGB is negative, that is, when the reference value RGB_S <the RGB value of the measurement result, the control unit 12 has a positive predetermined value according to the magnitude of the difference ΔRGB so that the RGB value of the measurement result becomes small. Is subtracted from Hugh H, and Hugh H as a subtraction result is output to the communication unit 13. The same applies to step S505, which will be described later, step S602 of FIG. 6, and the like.

The control unit 12 determines whether or not the absolute value | ΔRGB | of the difference ΔRGB is the minimum (whether or not the difference ΔRGB is closest to 0) (step S503). When the control unit 12 determines in step S503 that the absolute value of the difference ΔRGB is not the minimum (step S503: N), the control unit 12 proceeds to step S502 and repeats the processes of steps S502 and S503.

When the control unit 12 determines in step S503 that the absolute value of the difference ΔRGB is the minimum (step S503: Y), the control unit 12 determines the output level in Hugh H at that time to a fixed output level (step S504). Then, the control unit 12 outputs the Hugh H of the output level to the communication unit 13 as a fixed value.

For example, the control unit 12 stores the difference ΔRGB for each sampling for which the determination in step S503 is performed, and determines whether or not there is a minimum value of the absolute value | ΔRGB | of the difference ΔRGB. The control unit 12 determines that the absolute value of the difference ΔRGB is not the minimum when the minimum value does not exist, and determines that the absolute value of the difference ΔRGB is the minimum when the minimum value exists. The same applies to step S506, which will be described later, step S603 of FIG. 6, and the like.

After step S504, the control unit 12 calculates the saturation S so that the difference ΔRGB = 0 between the reference value RGB_S and the RGB value (RGB value of the measurement result) received from the lighting processing device 3. Then, the control unit 12 outputs the calculated saturation S to the communication unit 13 (step S505). In this case, the control unit 12 outputs the Hugh H of the output level determined in step S504 to the communication unit 13 as a fixed value.

The control unit 12 determines whether or not the absolute value | ΔRGB | of the difference ΔRGB is the minimum (step S506). When the control unit 12 determines in step S506 that the absolute value of the difference ΔRGB is not the minimum (step S506: N), the control unit 12 proceeds to step S505 and repeats the processes of steps S505 and S506.

When the control unit 12 determines in step S506 that the absolute value of the difference ΔRGB is the minimum (step S506: Y), the control unit 12 determines the output level in the saturation S at that time to be a fixed output level (step S507). Then, the control unit 12 outputs the saturation S of the output level to the communication unit 13 as a fixed value.

When the control unit 12 shifts from step S504 to step S505 and the difference ΔRGB = 0, the control unit 12 does not perform the processes of steps S505 and S506. Then, in step S507, the control unit 12 determines the output level at the predetermined value of the saturation S output in step S501 to a fixed output level, and outputs the saturation S of the output level to the communication unit 13 as a fixed value. ..

Further, although the control unit 12 controls the Hugh H first and then controls the saturation S, the control unit 12 may control the saturation S first and then control the Hugh H.

In this way, the HS control shown in FIG. 5 controls the fixture light of the lighting fixture 4 having the specifications with Hugh H and saturation S as input parameters, so that the RGB value of the fixture light follows the reference value RGB_S. Become.

(Specific example of HSI control)
Next, a specific example of the HS control shown in FIG. 5 will be described by taking as an example the HSI control in which the intensity I, which is the strength, is added to the HS control. As described above, the HSI control is a method of controlling the emission color of the illumination by using Hugh H, saturation S, and intensity I. The manipulated variables are Hugh H, Saturation S and Intensity I. This HSI control is applicable to a luminaire 4 having specifications with Hugh H, saturation S, and intensity I as input parameters.

FIG. 10 is a flowchart showing a specific example of HSI control. Hereinafter, the range of the reference component values x1t, x2t, x3t, the measurement result values x1m, x2m, x3m, the intensity I and the saturation S is 0 to 255, and the range of the Hugh H is 0 to 360 degrees.

The control unit 12 inputs the reference value RGB_S from the setting units 10 and 10'. Then, the control unit 12 sets the maximum value among the reference value of the R component, the reference value of the G component, and the reference value of the B component constituting the reference value RGB_S to the reference component value x1t (step S1001).

In step S1001, the control unit 12 replaces the reference value of the R component, the reference value of the G component, and the reference value of the B component constituting the reference value RGB_S with the instrument light, which is the measurement result for the initial value of the manipulated variable. The value of the R component, the value of the G component, and the value of the B component that constitute the RGB value of the above may be used. The initial value of the operation amount in this case is a value preset by the key operation of the operator or a reference value RGB_S.

The control unit 12 sets the intensity I to 255 (step S1002: I = 255), and outputs the operation amount of the intensity I. As a result, the luminaire 4 emits light with the initially set predetermined value of Hugh H, the predetermined value of saturation S, and the intensity I = 255 as the operation amount.

The control unit 12 inputs the difference Δ between the reference value RGB_S and the RGB value of the measurement result from the subtraction unit 11, and among the differences Δ, whether or not the difference of the same component as the reference component value x1t is 0. To judge. That is, the control unit 12 determines whether or not the measurement result value x1 m and the reference component value x1t are the same for the same component as the reference component value x1t (step S1003).

In this case, the control unit 12 may determine whether or not the difference between the measurement result value x1m and the reference component value x1t is the minimum. The same applies to step S1007 and step S1011 described later.

When the control unit 12 determines in step S1003 that the value x1m of the measurement result and the reference component value x1t are not the same (step S1003: N), the intensity I is decremented (step S1004: I = I-1). .. Then, the control unit 12 outputs the manipulated variable of the intensity I after decrementing, and repeats the processes of steps S1003 and S1004. As a result, the luminaire 4 emits light with the initially set predetermined value of Hugh H, the predetermined value of saturation S, and the intensity I after decrement as the operation amount.

When the control unit 12 determines in step S1003 that the value x1m of the measurement result and the reference component value x1t are the same (step S1003: Y), the control unit 12 outputs the intensity I at that time as a fixed value.

The control unit 12 sets the smaller reference value (minimum value) to the reference component value x3t with respect to the reference values of the remaining two components other than the component of the reference component value x1t set in step S1001 (step S1005).

The control unit 12 sets the saturation S to 0 (step S1006: S = 0), and outputs the operation amount of the saturation S. As a result, the luminaire 4 emits light with the initially set predetermined value of Hugh H, saturation S = 0, and the fixed value of intensity I as the operation amount.

The control unit 12 inputs the difference Δ between the reference value RGB_S and the RGB value of the measurement result from the subtraction unit 11, and among the differences Δ, whether or not the difference of the same component as the reference component value x3t is 0. To judge. That is, the control unit 12 determines whether or not the measurement result value x3m and the reference component value x3t are the same for the same component as the reference component value x3t (step S1007).

When the control unit 12 determines in step S1007 that the value x3m of the measurement result and the reference component value x3t are not the same (step S1007: N), the saturation S is incremented (step S1008: S = S + 1). Then, the control unit 12 outputs the operation amount of the saturation S after the increment, and repeats the processing of step S1007 and step S1008. As a result, the luminaire 4 emits light with the initially set predetermined value of Hugh H, the incremented saturation S, and the fixed value of the intensity I as the operation amount.

When the control unit 12 determines in step S1007 that the value x3m of the measurement result and the reference component value x3t are the same (step S1007: Y), the control unit 12 outputs the saturation S at that time as a fixed value.

The control unit 12 sets the reference value of the remaining components other than the reference component values x1t and x3t set in steps S1001 and S1005 to the reference component value x2t (step S1009).

The control unit 12 sets an initial value H0 based on the types of the reference component values x1t and x3t set in steps S1001 and S1005, sets this to Hugh H (step S1010: H = H0), and sets the initial value H0. The operation amount of Hugh H is output. As a result, the luminaire 4 emits light with Hugh H = H0, a fixed value of saturation S, and a fixed value of intensity I as the operation amount.

Specifically, when the component (maximum component) of the reference component value x1t is G and the component (minimum component) of the reference component value x3t is B, the control unit 12 sets Hugh H = 60 as the initial value H0 = 60. do. Then, the control unit 12 compares the measurement result value x2m with the reference component value x2t for the R component in the process described later, and obtains a fixed value of Hugh H. Assuming that the maximum component of the R component, the G component and the B component is the G component, the Hugh H corresponding to the colors of the R component, the G component and the B component has a value of H = 60 to 180 degrees. And, assuming that the B component is small among the remaining R component and B component, Hugh H takes any value of H = 60 to 120 degrees.

Further, when the component (maximum component) of the reference component value x1t is G and the component (minimum component) of the reference component value x3t is R, the control unit 12 sets Hugh H = 120 as the initial value H0 = 120. Then, the control unit 12 compares the measurement result value x2m and the reference component value x2t with respect to the B component in the process described later, and obtains a fixed value of Hugh H. Assuming that the maximum component of the R component, the G component and the B component is the G component, the Hugh H corresponding to the colors of the R component, the G component and the B component has a value of H = 60 to 180 degrees. And, assuming that the R component is smaller among the remaining R component and B component, Hugh H takes any value of H = 120 to 180 degrees.

The initial value H0 of Hugh H is summarized as follows. When the component (maximum component) of the reference component value x1t is R and the component (minimum component) of the reference component value x3t is B, the initial value H0 = 0 is set, and the component (maximum component) of the reference component value x1t is R. When the component (minimum component) of the reference component value x3t is G, the initial value H0 = 300 is set.

When the component (maximum component) of the reference component value x1t is G and the component (minimum component) of the reference component value x3t is R, the initial value H0 = 120 is set and the component (maximum component) of the reference component value x1t is set. When G and the component (minimum component) of the reference component value x3t are B, the initial value H0 = 60 is set.

When the component (maximum component) of the reference component value x1t is B and the component (minimum component) of the reference component value x3t is R, the initial value H0 = 180 is set, and the component (maximum component) of the reference component value x1t is set. When B, the component (minimum component) of the reference component value x3t is G, the initial value H0 = 240 is set.

The control unit 12 shifts from step S1010, inputs the difference Δ between the reference value RGB_S and the RGB value of the measurement result from the subtraction unit 11, and among the differences Δ, the difference of the same component as the reference component value x2t. Is 0 or not. That is, the control unit 12 determines whether or not the measurement result value x2m and the reference component value x2t are the same for the same component as the reference component value x2t (step S1011).

When the control unit 12 determines in step S1011 that the value x2m of the measurement result and the reference component value x2t are not the same (step S1011: N), the Hugh H is incremented (step S1012: H = H + 1). Then, the control unit 12 outputs the operation amount of Hugh H after the increment, and repeats the processing of step S1011 and step S1012. As a result, the luminaire 4 emits light with the incremented Hugh H, the fixed value of saturation S, and the fixed value of intensity I as the operation amount.

When the control unit 12 determines in step S1011 that the value x2m of the measurement result and the reference component value x2t are the same (step S1011: Y), the Hugh H at that time is output as a fixed value. As a result, the luminaire 4 emits light with the fixed value of Hugh H, the fixed value of saturation S, and the fixed value of intensity I as the operation amount.

In this way, according to the specific example of HSI control shown in FIG. 10, the fixture light of the lighting fixture 4 having the specifications with Hugh H, saturation S and intensity I as input parameters is controlled, and the RGB value of the fixture light is the reference. It comes to follow the value RGB_S.

(K control)
Next, K control will be described. As described above, the K control is a method of controlling the emission color of the illumination by using the color temperature K. The operation amount is the color temperature K. This K control is applicable to the luminaire 4 having a specification in which the color temperature K is used as an input parameter.

FIG. 6 is a flowchart showing an example of K control processing by the control unit 12. The control unit 12 outputs the initially set operation amount (predetermined value of the color temperature K) to the communication unit 13 (step S601). As a result, the predetermined value of the color temperature K is transmitted from the lighting control device 1 to the lighting processing device 3 via the wireless communication path, and is transmitted from the lighting processing device 3 to the lighting fixture 4. Then, the lighting fixture 4 emits light with a light emitting color corresponding to a predetermined value of the color temperature K, and the RGB value of the light emitting color is transmitted from the lighting processing device 3 to the lighting control device 1 via the wireless communication path. ..

The control unit 12 calculates the color temperature K so that the difference ΔRGB = 0 between the reference value RGB_S and the RGB value (RGB value of the measurement result) received from the lighting processing device 3. Then, the control unit 12 outputs the calculated color temperature K to the communication unit 13 (step S602).

The control unit 12 determines whether or not the absolute value | ΔRGB | of the difference ΔRGB is the minimum (whether or not the difference ΔRGB is closest to 0) (step S603). When the control unit 12 determines in step S603 that the absolute value of the difference ΔRGB is not the minimum (step S603: N), the control unit 12 proceeds to step S602 and repeats the processes of steps S602 and S603.

When the control unit 12 determines in step S603 that the absolute value of the difference ΔRGB is the minimum (step S603: Y), the control unit 12 determines the output level at the color temperature K at that time to be a fixed output level (step S604). , The color temperature K of the output level is output to the communication unit 13 as a fixed value.

As described above, the K control shown in FIG. 6 controls the fixture light of the lighting fixture 4 having the specification with the color temperature K as the input parameter, and the RGB value of the fixture light follows the reference value RGB_S.

(KG control)
Next, KG control will be described. As described above, the KG control is a method of controlling the emission color of the illumination by using the color temperature K and the green component G, and the tint is determined by the green component G. The operation amount is the color temperature K and the green component G. This KG control is applicable to the luminaire 4 having a specification in which the color temperature K and the green component G are input parameters.

FIG. 7 is a flowchart showing an example of KG control processing by the control unit 12. The control unit 12 outputs the initially set operation amount (predetermined value of the color temperature K and predetermined value of the green component G) to the communication unit 13 (step S701). As a result, the predetermined value of the color temperature K and the predetermined value of the green component G are transmitted from the lighting control device 1 to the lighting processing device 3 via the wireless communication path, and are transmitted from the lighting processing device 3 to the lighting fixture 4. Then, the lighting fixture 4 emits light with a light emitting color corresponding to a predetermined value of the color temperature K and a predetermined value of the green component G, and the RGB value of the light emitting color is illuminated from the lighting processing device 3 via the wireless communication path. It is transmitted to the control device 1.

The control unit 12 calculates the color temperature K so that the difference ΔRGB = 0 between the reference value RGB_S and the RGB value (RGB value of the measurement result) received from the lighting processing device 3. Then, the control unit 12 outputs the calculated color temperature K to the communication unit 13 (step S702). In this case, the control unit 12 outputs the predetermined value of the green component G as a fixed value to the communication unit 13.

The control unit 12 determines whether or not the absolute value | ΔRGB | of the difference ΔRGB is the minimum (whether or not the difference ΔRGB is closest to 0) (step S703). When the control unit 12 determines in step S703 that the absolute value of the difference ΔRGB is not the minimum (step S703: N), the control unit 12 proceeds to step S702 and repeats the processes of steps S702 and S703.

When the control unit 12 determines in step S703 that the absolute value of the difference ΔRGB is the minimum (step S703: Y), the control unit 12 determines the output level at the color temperature K at that time to be a fixed output level (step S704). .. Then, the control unit 12 outputs the color temperature K of the output level to the communication unit 13 as a fixed value.

After step S704, the control unit 12 calculates the green component G so that the difference ΔRGB = 0 between the reference value RGB_S and the RGB value (RGB value of the measurement result) received from the lighting processing device 3 is obtained. The calculated green component G is output to the communication unit 13 (step S705). In this case, the control unit 12 outputs the color temperature K of the output level determined in step S704 as a fixed value to the communication unit 13.

The control unit 12 determines whether or not the absolute value | ΔRGB | of the difference ΔRGB is the minimum (step S706). When the control unit 12 determines in step S706 that the absolute value of the difference ΔRGB is not the minimum (step S706: N), the control unit 12 proceeds to step S705 and repeats the processes of steps S705 and S706.

When the control unit 12 determines in step S706 that the absolute value of the difference ΔRGB is the minimum (step S706: Y), the control unit 12 determines the output level in the green component G at that time to be a fixed output level (step S707). .. Then, the control unit 12 outputs the green component G of the output level to the communication unit 13 as a fixed value.

When the control unit 12 shifts from step S704 to step S705, if the difference ΔRGB = 0, the control unit 12 does not perform the processes of steps S705 and S706. Then, in step S707, the control unit 12 determines the output level of the green component G output in step S701 at the predetermined value to a fixed output level, and sets the green component G of the output level as a fixed value to the communication unit 13. Output.

Further, although the control unit 12 controls the color temperature K first and then controls the green component G, the control unit 12 may control the green component G first and then control the color temperature K.

In this way, the KG control shown in FIG. 7 controls the fixture light of the lighting fixture 4 having the specifications with the color temperature K and the green component G as input parameters, and the RGB value of the fixture light follows the reference value RGB_S. It will be like.

(RGB control)
Next, RGB control will be described. As described above, the RGB control is a method of controlling the emission color of the illumination by using the R component, the G component and the B component. The manipulated variable is an R component value, a G component value, and a B component value. This RGB control is applicable to the luminaire 4 having a specification in which the R component, the G component and the B component are input parameters.

FIG. 8 is a flowchart showing an example of RGB control processing by the control unit 12. The control unit 12 outputs the initially set operation amount (predetermined value of R component, predetermined value of G component, and predetermined value of B component) to the communication unit 13 (step S801). As a result, the predetermined value of the R component, the predetermined value of the G component, and the predetermined value of the B component are transmitted from the lighting control device 1 to the lighting processing device 3 via the wireless communication path, and are transmitted from the lighting processing device 3 to the lighting fixture 4. Will be sent. Then, the lighting fixture 4 emits light with a light emitting color corresponding to a predetermined value of the R component, a predetermined value of the G component, and a predetermined value of the B component, and the RGB value of the light emitting color is the wireless communication path from the lighting processing device 3. It is transmitted to the lighting control device 1 via.

The control unit 12 calculates the B component value so that the difference ΔRGB = 0 between the reference value RGB_S and the RGB value (RGB value of the measurement result) received from the lighting processing device 3. Then, the control unit 12 outputs the calculated B component value to the communication unit 13 (step S802). In this case, the control unit 12 outputs the predetermined value of the R component and the predetermined value of the G component as operation quantities to the communication unit 13.

The control unit 12 determines whether or not the absolute value | ΔRGB | of the difference ΔRGB is the minimum (whether or not the difference ΔRGB is closest to 0) (step S803). When the control unit 12 determines in step S803 that the absolute value of the difference ΔRGB is not the minimum (step S803: N), the control unit 12 proceeds to step S802 and repeats the processes of step S802 and step S803.

When the control unit 12 determines in step S803 that the absolute value of the difference ΔRGB is the minimum (step S803: Y), the control unit 12 determines the output level of the B component value at that time to be a fixed output level (step S804). , The B component value of the output level is output to the communication unit 13 as a fixed value (fixed operation amount).

After step S804, the control unit 12 calculates the R component value so that the difference ΔRGB = 0 between the reference value RGB_S and the RGB value (RGB value of the measurement result) received from the lighting processing device 3. The calculated R component value is output to the communication unit 13 (step S805). In this case, the control unit 12 outputs the B component value of the output level determined in step S804 to the communication unit 13 as a fixed operation amount, and outputs the predetermined value of the G component to the communication unit 13 as the operation amount.

The control unit 12 determines whether or not the absolute value | ΔRGB | of the difference ΔRGB is the minimum (step S806). When the control unit 12 determines in step S806 that the absolute value of the difference ΔRGB is not the minimum (step S806: N), the control unit 12 proceeds to step S805 and repeats the processes of step S805 and step S806.

When the control unit 12 determines in step S806 that the absolute value of the difference ΔRGB is the minimum (step S806: Y), the control unit 12 determines the output level of the R component value at that time to be a fixed output level (step S807). , The R component value of the output level is output to the communication unit 13 as a fixed operation amount.

When the control unit 12 shifts from step S804 to step S805, if the difference ΔRGB = 0, the control unit 12 does not perform the processes of steps S805 and S806. Then, in step S807, the control unit 12 determines the output level of the R component output in step S801 at the predetermined value to a fixed output level, and sets the R component value of the output level as a fixed operation amount to the communication unit 13. Output to.

After step S807, the control unit 12 calculates and calculates the G component value so that the difference ΔRGB = 0 between the reference value RGB_S and the RGB value (RGB value of the measurement result) received from the lighting processing device 3. The G component value is output to the communication unit 13 (step S808). In this case, the control unit 12 outputs the B component value of the output level determined in step S804 to the communication unit 13 as a fixed operation amount, and the R component value of the output level determined in step S807 is a fixed operation. It is output to the communication unit 13 as an amount.

The control unit 12 determines whether or not the absolute value | ΔRGB | of the difference ΔRGB is the minimum (step S809). When the control unit 12 determines in step S809 that the absolute value of the difference ΔRGB is not the minimum (step S809: N), the control unit 12 proceeds to step S808 and repeats the processes of step S808 and step S809.

When the control unit 12 determines in step S809 that the absolute value of the difference ΔRGB is the minimum (step S809: Y), the control unit 12 determines the output level of the G component value at that time to be a fixed output level (step S810). , The G component value of the output level is output to the communication unit 13 as a fixed operation amount.

When the control unit 12 shifts from step S807 to step S808, if the difference ΔRGB = 0, the control unit 12 does not perform the processes of steps S808 and S809. Then, in step S810, the control unit 12 determines the output level of the G component output in step S801 at the predetermined value to be a fixed output level, and the communication unit 13 uses the G component value of the output level as a fixed operation amount. Output to.

Further, the control unit 12 controls the B component, the R component, and the G component in this order to determine the output level of each, but this order is arbitrary.

In this way, the RGB control shown in FIG. 8 controls the fixture light of the lighting fixture 4 having the specifications with the B component, the R component, and the G component as input parameters, and the RGB value of the fixture light follows the reference value RGB_S. Will come to do.

(Specific example of RGB control)
Next, a specific example of the RGB control shown in FIG. 8 will be described. FIG. 11 is a flowchart showing a specific example of RGB control. Hereinafter, the range of the reference component values x1t, x2t, x3t, the measurement result values x1m, x2m, x3m and the manipulated variable x1, x2, x3 is defined as 0 to 255.

The control unit 12 inputs the reference value RGB_S from the setting units 10 and 10'. Then, the control unit 12 sets the maximum value among the reference value of the R component, the reference value of the G component, and the reference value of the B component constituting the reference value RGB_S to the reference component value x1t (step S1101).

The control unit 12 sets 255 for the operation amount x1 of the same component as the reference component value x1t (step S1102: x1 = 255), and outputs the operation amount x1 of the first component. As a result, the lighting fixture 4 emits light by the operation amount x1 = 255 of the first component and the operation amounts x2 and x3 initially set for the second and third components other than the first component.

The control unit 12 inputs the difference Δ between the reference value RGB_S and the RGB value of the measurement result from the subtraction unit 11, and among the differences Δ, whether or not the difference of the same component as the reference component value x1t is 0. To judge. That is, the control unit 12 determines whether or not the measurement result value x1 m and the reference component value x1t are the same for the same component as the reference component value x1t (step S1103).

In this case, the control unit 12 may determine whether or not the difference between the measurement result value x1m and the reference component value x1t is the minimum. The same applies to step S1107 and step S1111 described later.

When the control unit 12 determines in step S1103 that the value x1m of the measurement result and the reference component value x1t are not the same (step S1103: N), the control unit 12 decrements the manipulated variable x1 (step S1104: x1 = x1-1). .. Then, the control unit 12 outputs the operation amount x1 after decrementing, and repeats the processes of steps S1103 and S1104. As a result, the lighting fixture 4 emits light according to the operation amount x1 after decrementing and the initially set operation amounts x2 and x3.

When the control unit 12 determines in step S1103 that the value x1m of the measurement result and the reference component value x1t are the same (step S1103: Y), the control unit 12 outputs the operation amount x1 at that time as a fixed operation amount.

The control unit 12 sets the smaller reference value (minimum value) to the reference component value x3t with respect to the reference values of the remaining two components other than the reference component value x1t component set in step S1101 (step S1105).

The control unit 12 sets 0 to the manipulated variable x3 of the same component as the reference component value x3t (step S1106: x3 = 0), and outputs the manipulated variable x3 of the third component. As a result, the lighting fixture 4 emits light due to the fixed operation amount x1, the initially set operation amount x2, and the operation amount x3 = 0.

The control unit 12 inputs the difference Δ between the reference value RGB_S and the RGB value of the measurement result from the subtraction unit 11, and among the differences Δ, whether or not the difference of the same component as the reference component value x3t is 0. To judge. That is, the control unit 12 determines whether or not the measurement result value x3m and the reference component value x3t are the same for the same component as the reference component value x3t (step S1107).

When the control unit 12 determines in step S1107 that the value x3m of the measurement result and the reference component value x3t are not the same (step S1107: N), the control unit 12 increments the operation amount x3 (step S1108: x3 = x3 + 1). Then, the control unit 12 outputs the operation amount x3 after the increment, and repeats the processing of step S1107 and step S1108. As a result, the lighting fixture 4 emits light due to the fixed operation amount x1, the initially set operation amount x2, and the incremented operation amount x3.

When the control unit 12 determines in step S1107 that the value x3m of the measurement result and the reference component value x3t are the same (step S1107: Y), the control unit 12 outputs the operation amount x3 at that time as a fixed operation amount.

The control unit 12 sets the reference value of the remaining components other than the reference component values x1t and x3t set in steps S1101 and S1105 to the reference component value x2t (step S1109).

The control unit 12 sets the smaller of the fixed operation amount x1 in step S1103 and the fixed operation amount x3 in step S1107 to the operation amount x2 (step S1110: x2 = min (x1, x3)), and the operation amount. Output x2. As a result, the lighting fixture 4 emits light due to the fixed operation amount x1, the operation amount x2 = min (x1, x3), and the fixed operation amount x3.

The control unit 12 inputs the difference Δ between the reference value RGB_S and the RGB value of the measurement result from the subtraction unit 11, and among the differences Δ, whether or not the difference of the same component as the reference component value x2t is 0. To judge. That is, the control unit 12 determines whether or not the measurement result value x2m and the reference component value x2t are the same for the same component as the reference component value x2t (step S1111).

When the control unit 12 determines in step S1111 that the value x2m of the measurement result and the reference component value x2t are not the same (step S1111: N), the operation amount x2 is incremented (step S1112: x2 = x2 + 1). Then, the control unit 12 outputs the operation amount x2 after the increment, and repeats the processing of step S1111 and step S1112. As a result, the lighting fixture 4 emits light due to the fixed operation amount x1, the operation amount after incrementing x2, and the fixed operation amount x3.

When the control unit 12 determines in step S1111 that the value x2m of the measurement result and the reference component value x2t are the same (step S1111: Y), the control unit 12 outputs the operation amount x2 at that time as a fixed operation amount. As a result, the lighting fixture 4 emits light due to the fixed operation amount x1, the fixed operation amount x2, and the fixed operation amount x3.

In this way, according to the specific example of RGB control shown in FIG. 11, the fixture light of the lighting fixture 4 having the specifications with the R component, the G component, and the B component as input parameters is controlled, and the RGB value of the fixture light is a reference value. It comes to follow RGB_S.

(Other specific examples of RGB control)
Next, another specific example of RGB control shown in FIG. 8 will be described. FIG. 12 is a flowchart showing another specific example of RGB control.

The subtraction unit 11 and the control unit 12 input reference values RGB_S (reference values Rm, Gm, Bm) from the setting units 10 and 10'(step S1201). The reference value of the R component constituting the reference value RGB_S is Rm, the reference value of the G component is Gm, and the reference value of the B component is Bm.

Further, the measurement result of the R component constituting the RGB value of the measurement result of the instrument light measured by the color sensor 33 or the like described later of the lighting processing device 3 is Rt, the measurement result of the G component is Gt, and the measurement result of the B component is. Let it be Bt. Further, the difference obtained by subtracting the measurement result Rt from the reference value Rm of the R component is measured from Rd, and the difference obtained by subtracting the measurement result Gt from the reference value Gm of the G component is measured from Gd and the reference value Bm of the B component. Let Bd be the difference that is the result of subtracting the result Bt. Further, the absolute difference value which is the absolute value of the difference Rd of the R component is ARd, the absolute difference value which is the absolute value of the difference Gd of the G component is AGd, and the absolute value difference which is the absolute value of the difference Bd of the B component is ABd. do. With respect to the reference values Rm, Gm, Bm, the measurement results Rt, Gt, Bt, and the manipulated variables of the R, G, B components, the range in which these values can be taken is 0 to 255.

The processing of steps S1202 to S1213, which will be described later, consists of two steps: steps S1202 and S1203, steps S1204 and S1205, steps S1206 and S1207, steps S1208 and S1209, steps S1210 and S1211, and steps S1212 and S1213. It consists of 6 combinations with the unit of. The number 6 of this combination is the number when the order of processing of each component is changed with respect to the RGB component. For each of these combinations, RGB value input processing and difference updating processing are performed in advance.

Steps S1202 and S1203 are processes performed in the order of R, G, B, steps S1204 and S1205 are processes performed in the order of R, B, G, and steps S1206 and S1207 are performed in the order of G, R, B. It is a process. Further, steps S1208 and S1209 are processes performed in the order of G, B and R, steps S1210 and S1211 are processes performed in the order of B, R and G, and steps S1212 and S1213 are processes performed in the order of B, G and R. It is a process to be performed in order.

The reason why the processing is performed for each combination in which the order of each RGB component is changed is that if the operation amount of any one of the RGB components is changed, not only the relevant component but also the measurement results of the other two components change. be. For example, when the manipulated amount of the R component is changed, the measurement result Rt changes and the measurement results Gt and Bt also change. Further, when the manipulated amount of the G component is changed, the measurement result Gt changes and the measurement results Rt and Bt also change. When the manipulated amount of the B component is changed, the measurement result Bt changes and the measurement results Rt and Gt change. Also changes.

Therefore, in another specific example of RGB control shown in FIG. 12, by sequentially performing processing for each combination in which the order of each component of RGB is changed, the other 2 that occur with the change of the manipulated variable of one component. The influence of one component on the measurement result was gradually reduced.

The subtraction unit 11 and the control unit 12 perform RGB value input and update processing such as difference (step S1202). Details of step S1202 and RGB value input and difference update processing in steps S1204, S1206, S1208, S1210, and S1212, which will be described later, will be described later.

The control unit 12 shifts from step S1202 and performs RGB processing (step S1203). The RGB processing is a processing in which the R (red) processing routine, the G (green) processing routine, and the B (blue) processing routine are executed in this order. That is, the control unit 12 executes the G processing routine after executing the R processing routine, and executes the B processing routine after executing the G processing routine. Details of the R processing routine, the G processing routine, and the B processing routine of steps S1203 and steps S1205, S1207, S1209, S121, and S1213, which will be described later, will be described later.

The subtraction unit 11 and the control unit 12 shift from step S1203 and perform RGB value input and difference update processing (step S1204). Then, the control unit 12 shifts from step S1204 and performs RBG processing (step S1205). The RBG process is a process of executing the R process routine, the B process routine, and the G process routine in this order. That is, the control unit 12 executes the B processing routine after executing the R processing routine, and executes the G processing routine after executing the B processing routine.

The subtraction unit 11 and the control unit 12 shift from step S1205 to perform RGB value input and difference update processing (step S1206). Then, the control unit 12 shifts from step S1206 and performs GRB processing (step S1207). The GRB process is a process of executing the G process routine, the R process routine, and the B process routine in this order. That is, the control unit 12 executes the R processing routine after executing the G processing routine, and executes the B processing routine after executing the R processing routine.

The subtraction unit 11 and the control unit 12 shift from step S1207 to perform RGB value input and difference update processing (step S1208). Then, the control unit 12 shifts from step S1208 and performs the GBR process (step S1209). The GBR process is a process of executing the G process routine, the B process routine, and the R process routine in this order. That is, the control unit 12 executes the B processing routine after executing the G processing routine, and executes the R processing routine after executing the B processing routine.

The subtraction unit 11 and the control unit 12 shift from step S1209 to perform RGB value input and difference update processing (step S1210). Then, the control unit 12 shifts from step S1210 and performs BRG processing (step S1211). The BRG process is a process of executing the B process routine, the R process routine, and the G process routine in this order. That is, the control unit 12 executes the R processing routine after executing the B processing routine, and executes the G processing routine after executing the R processing routine.

The subtraction unit 11 and the control unit 12 shift from step S1211 to perform RGB value input and difference update processing (step S1212). Then, the control unit 12 shifts from step S1212 and performs BGR processing (step S1213). The BGR process is a process of executing the B process routine, the G process routine, and the R process routine in this order. That is, the control unit 12 executes the G processing routine after executing the B processing routine, and executes the R processing routine after executing the G processing routine.

The control unit 12 proceeds from step S1213 and determines whether or not all of the difference absolute value ARd of the R component, the difference absolute value AGd of the G component, and the difference absolute value ABd of the B component are within a predetermined error range. (Step S1214). Specifically, the control unit 12 determines whether or not all the flags Rflg, Gflg, and Bflg described later are true. The flags Rflg, Gflg, and Bflg are set to true if the absolute difference values ARd, AGd, and ABd are within the permissible range, and false if they are not within the permissible range (if they are out of the permissible range). Details will be described later.

When the control unit 12 determines in step S1214 that one or more of the absolute difference values ARd, AGd, and ABd is not within a predetermined error range (step S1214: N), the control unit 12 proceeds to step S1202 and performs processing. repeat. On the other hand, when the control unit 12 determines in step S1214 that all of the absolute difference values ARd, AGd, and ABd are within a predetermined error range (step S1214: Y), the control unit 12 ends the process.

The control unit 12 determines that one or more of the absolute difference values ARd, AGd, and ABd is not within a predetermined error range, and repeats the processes of steps S1202 to S1214, for example, when 30 seconds have elapsed. , Or when the process is repeated a predetermined number of times, the process ends.

FIG. 13 is a flowchart showing details of RGB value input and difference update processing in steps S1202, S1204, S1206, S1208, S1210, and S1212 shown in FIG.

The subtraction unit 11 inputs the RGB value of the measurement result of the instrument light from the communication unit 13 (step S1301), and adds 1 to the number of samples (number of inputs). Then, the subtraction unit 11 adds the R, G, B input values which are the values of the R, G, B components constituting the RGB value to each of the RGB values by the following formula, and adds a new R, G, B input value. The G and B values are obtained (step S1302).
[Number 1]
R value = R value + R input value G value = G value + G input value B value = B value + B input value ... (1)

The subtraction unit 11 determines whether or not the number of samples of the RGB value is smaller than 3 (step S1303), and when it is determined that the number of samples is smaller than 3 (step S1303: Y), the process is terminated and the step is performed. Move to S1301.

On the other hand, when the subtraction unit 11 determines in step S1303 that the number of samples is not smaller than 3 (step S1303: N), that is, when the number of samples is 3, the subtraction unit 11 proceeds to step S1304. As a result, the R value is the result of adding the R input value of the sample count 3, the G value is the result of adding the G input value of the sample count 3, and the B value is the result of adding the B input value of the sample count 3. The result is.

The subtraction unit 11 divides the R value by 3 to obtain the measurement result Rt, subtracts the measurement result Rt from the reference value Rm to obtain the difference Rd, and the control unit 12 uses the subtraction unit 11 to obtain the difference Rd. The absolute value of the obtained difference Rd is calculated, and the difference absolute value ARd is obtained (step S1304).
[Number 2]
Rt = R value / 3
Rd = Rm-Rt
ARd = | Rd | ... (2)

The subtraction unit 11 divides the G value by 3 to obtain the measurement result Gt, subtracts the measurement result Gt from the reference value Gm to obtain the difference Gd, and the control unit 12 uses the subtraction unit 11 to obtain the difference Gd. The absolute value of the obtained difference Gd is calculated, and the difference absolute value AGd is obtained (step S1305).
[Number 3]
Gt = G value / 3
Gd = Gm-Gt
AGd = | Gd | ... (3)

The subtraction unit 11 divides the B value by 3 to obtain the measurement result Bt, subtracts the measurement result Bt from the reference value Bm to obtain the difference Bd, and the control unit 12 uses the subtraction unit 11 to obtain the difference Bd. The absolute value of the obtained difference Bd is calculated, and the difference absolute value ABd is obtained (step S1306).
[Number 4]
Bt = B value / 3
Bd = Bm-Bt
ABd = | Bd | ... (4)

The subtraction unit 11 clears the R value, the G value, and the B value (step S1307), and also clears the number of samples of the RGB values.

As a result, the absolute difference values ARd, AGd, and ABd are obtained. As the difference absolute values ARd, AGd, and ABd obtained in step S1202 of FIG. 12, the same values are used in the R processing routine, the G processing routine, and the B processing routine described later in step S1203. Similarly, the difference absolute values ARd, AGd, and ABd obtained in steps S1204, S1206, S1208, S1210, and S1212 are the R processing routine, G processing routine, and B described later in steps S1205, S1207, S1209, S1211, and S1213, respectively. The same value is used in the processing routine.

(R processing routine)
FIG. 14 is a flowchart showing the details of the R processing routine in steps S1203, S1205, S1207, S1209, S1211, and S1213 shown in FIG. The control unit 12 determines whether or not the difference absolute value ARd is smaller than 2 (within the allowable range) (step S1401). The numerical value 2 as a reference for determining the allowable range is an example, and another numerical value may be used depending on the error of the measurement result Rt. The same applies to step S1701 of FIG. 17 and step S2001 of FIG. 20.

When the control unit 12 determines in step S1401 that the difference absolute value ARd is smaller than 2 (step S1401: Y), the control unit 12 sets the flag Rflg = true assuming that the difference absolute value ARd of the R component is within the permissible range. (Step S1402), the process is terminated.

On the other hand, when the control unit 12 determines in step S1401 that the difference absolute value ARd is not smaller than 2 (step S1401: N), it is assumed that the difference absolute value ARd of the R component is not within the allowable range, and the flag Rflg = false. Is set (step S1403).

The control unit 12 shifts from step S1403 and determines whether or not the difference Rd is smaller than 0, that is, whether or not the reference value Rm is smaller than the measurement result Rt (step S1404). When the control unit 12 determines in step S1404 that the difference Rd is smaller than 0 (step S1404: Y), the control unit 12 performs an R subtraction process for reducing the measurement result Rt (step S1405), and ends the process. The details of the R subtraction process in step S1405 will be described later.

On the other hand, when the control unit 12 determines in step S1404 that the difference Rd is not smaller than 0 (step S1404: N), the control unit 12 performs an R addition process for increasing the measurement result Rt (step S1406), and performs the process. finish. The details of the R addition process in step S1406 will be described later.

(R subtraction process)
FIG. 15 is a flowchart showing the details of the R subtraction process of step S1405 shown in FIG. The control unit 12 determines whether or not the manipulated variable of the R component is larger than 0 (step S1501).

When the control unit 12 determines in step S1501 that the operation amount of the R component is larger than 0 (step S1501: Y), the control unit 12 subtracts 1 from the operation amount of the R component to set a new operation amount (step). S1502), the process is terminated.

On the other hand, when the control unit 12 determines in step S1501 that the manipulated variable of the R component is not greater than 0 (step S1501: N), the control unit 12 determines whether or not the manipulated variable of the G component is smaller than 255 (step S1501: N). Step S1503).

When the control unit 12 determines in step S1503 that the operation amount of the G component is smaller than 255 (step S1503: Y), the control unit 12 adds 1 to the operation amount of the G component to set a new operation amount (step). S1504), the process proceeds to step S1505.

On the other hand, when the control unit 12 determines in step S1503 that the manipulated variable of the G component is not smaller than 255 (step S1503: N), the control unit 12 proceeds to step S1505.

The control unit 12 shifts from step S1503 or step S1504 and determines whether or not the manipulated variable of the B component is smaller than 255 (step S1505).

When the control unit 12 determines in step S1505 that the operation amount of the B component is smaller than 255 (step S1505: Y), the control unit 12 adds 1 to the operation amount of the B component to set a new operation amount (step). S1506), the process is terminated.

On the other hand, when the control unit 12 determines in step S1505 that the manipulated variable of the B component is not smaller than 255 (step S1505: N), the control unit 12 ends the process.

In this way, in the R subtraction process, when the manipulated variable of the R component is larger than 0, the manipulated variable of the R component can be reduced, so 1 is subtracted from the manipulated variable of the R component to obtain a new manipulated variable. Set. As a result, the measurement result Rt of the R component can be reduced.

On the other hand, when the manipulated variable of the R component is not larger than 0, the manipulated variable is the minimum 0, so that the manipulated variable of the R component cannot be reduced. Therefore, instead of decreasing the manipulated amount of the R component, the manipulated amount of the G component and / or the B component is increased. As a result, the measurement result Rt of the R component can be reduced. This is because the RGB values are calculated relative values as shown in the formula (5) described later. Specifically, when the manipulated variable of the G component and / or the B component increases and the sensor values IG and IB of the B component increase, the value R of the R component decreases, and as a result, the measurement result Rt decreases. be.

The operation amount of the R component, the operation amount of the G component, and the operation amount of the B component set in this way are transmitted to the lighting processing device 3 via the communication unit 13. Then, an RGB value reflecting the operation amount of the R component, the operation amount of the G component, and the operation amount of the B component can be obtained.

(R addition processing)
FIG. 16 is a flowchart showing the details of the R addition process of step S1406 shown in FIG. The control unit 12 determines whether or not the manipulated variable of the R component is smaller than 255 (step S1601).

When the control unit 12 determines in step S1601 that the manipulated variable of the R component is smaller than 255 (step S1601: Y), the control unit 12 adds 1 to the manipulated variable of the R component to set a new manipulated variable (step). S1602), the process is terminated.

On the other hand, when the control unit 12 determines in step S1601 that the manipulated variable of the R component is not smaller than 255 (step S1601: N), the control unit 12 determines whether or not the manipulated variable of the G component is larger than 0 (step S1601: N). Step S1603).

When the control unit 12 determines in step S1603 that the operation amount of the G component is larger than 0 (step S1603: Y), the control unit 12 subtracts 1 from the operation amount of the G component to set a new operation amount (step). S1604), the process proceeds to step S1605.

On the other hand, when the control unit 12 determines in step S1603 that the manipulated variable of the G component is not larger than 0 (step S1603: N), the control unit 12 proceeds to step S1605.

The control unit 12 shifts from step S1603 or step S1604 and determines whether or not the manipulated variable of the B component is larger than 0 (step S1605).

When the control unit 12 determines in step S1605 that the operation amount of the B component is larger than 0 (step S1605: Y), the control unit 12 subtracts 1 from the operation amount of the B component to set a new operation amount (step). S1606), the process is terminated.

On the other hand, when the control unit 12 determines in step S1605 that the operation amount of the B component is not larger than 0 (step S1605: N), the control unit 12 ends the process.

As described above, in the R addition process, when the operation amount of the R component is smaller than 255, the operation amount of the R component can be increased. Therefore, 1 is added to the operation amount of the R component to obtain a new operation amount. Set. As a result, the measurement result Rt of the R component can be increased.

On the other hand, when the manipulated amount of the R component is not smaller than 255, the manipulated amount of the R component is the maximum 255, so that the manipulated amount of the R component cannot be increased. Therefore, instead of increasing the manipulated amount of the R component, the manipulated amount of the G component and / or the B component is decreased. As a result, the measurement result Rt of the R component can be increased. This is because the RGB values are calculated relative values as shown in the formula (5) described later. Specifically, when the manipulated variable of the G component and / or the B component decreases and the sensor values IG and IB become smaller, the value R of the R component becomes larger, and as a result, the measurement result Rt becomes larger.

The operation amount of the R component, the operation amount of the G component, and the operation amount of the B component set in this way are transmitted to the lighting processing device 3 via the communication unit 13. Then, an RGB value reflecting the operation amount of the R component, the operation amount of the G component, and the operation amount of the B component can be obtained.

(G processing routine)
FIG. 17 is a flowchart showing details of the G processing routine in steps S1203, S1205, S1207, S1209, S1211, and S1213 shown in FIG. The control unit 12 determines whether or not the difference absolute value AGd is smaller than 2 (within the allowable range) (step S1701).

When the control unit 12 determines in step S1701 that the difference absolute value AGd is smaller than 2 (step S1701: Y), the control unit 12 sets the flag Gflg = true assuming that the difference absolute value AGd of the G component is within the allowable range. (Step S1702), the process is terminated.

On the other hand, when the control unit 12 determines in step S1701 that the difference absolute value AGd is not smaller than 2 (step S1701: N), it is assumed that the difference absolute value AGd of the G component is not within the allowable range, and the flag Gflg = false. Is set (step S1703).

The control unit 12 shifts from step S1703 and determines whether or not the difference Gd is smaller than 0, that is, whether or not the reference value Gm is smaller than the measurement result Gt (step S1704). When the control unit 12 determines in step S1704 that the difference Gd is smaller than 0 (step S1704: Y), the control unit 12 performs a G subtraction process for reducing the measurement result Gt (step S1705), and ends the process. The details of the G subtraction process in step S1705 will be described later.

On the other hand, when the control unit 12 determines in step S1704 that the difference Gd is not smaller than 0 (step S1704: N), the control unit 12 performs a G addition process for increasing the measurement result Gt (step S1706), and performs the process. finish. The details of the G addition process in step S1706 will be described later.

(G subtraction process)
FIG. 18 is a flowchart showing the details of the G subtraction process in step S1705 shown in FIG. The control unit 12 determines whether or not the manipulated variable of the G component is larger than 0 (step S1801).

When the control unit 12 determines in step S1801 that the operation amount of the G component is larger than 0 (step S1801: Y), the control unit 12 subtracts 1 from the operation amount of the G component to set a new operation amount (step). S1802), the process is terminated.

On the other hand, when the control unit 12 determines in step S1801 that the manipulated variable of the G component is not greater than 0 (step S1801: N), the control unit 12 determines whether or not the manipulated variable of the R component is smaller than 255 (step S1801: N). Step S1803).

When the control unit 12 determines in step S1803 that the operation amount of the R component is smaller than 255 (step S1803: Y), the control unit 12 adds 1 to the operation amount of the R component to set a new operation amount (step). S1804), the process proceeds to step S1805.

On the other hand, when the control unit 12 determines in step S1803 that the manipulated variable of the R component is not smaller than 255 (step S1803: N), the control unit 12 proceeds to step S1805.

The control unit 12 shifts from step S1803 or step S1804 to determine whether or not the manipulated variable of the B component is smaller than 255 (step S1805).

When the control unit 12 determines in step S1805 that the operation amount of the B component is smaller than 255 (step S1805: Y), the control unit 12 adds 1 to the operation amount of the B component to set a new operation amount (step). S1806), the process is terminated.

On the other hand, when the control unit 12 determines in step S1805 that the manipulated variable of the B component is not smaller than 255 (step S1805: N), the control unit 12 ends the process.

As described above, in the G subtraction process, when the operation amount of the G component is larger than 0, the operation amount of the G component can be reduced. Therefore, 1 is subtracted from the operation amount of the G component to obtain a new operation amount. Set. As a result, the measurement result Gt of the G component can be reduced.

On the other hand, when the manipulated variable of the G component is not larger than 0, the manipulated variable is the minimum 0, so that the manipulated variable of the G component cannot be reduced. Therefore, instead of decreasing the manipulated amount of the G component, the manipulated amount of the R component and / or the B component is increased. As a result, the measurement result Gt of the G component can be reduced. This is because the RGB values are calculated relative values as shown in the formula (6) described later. Specifically, when the manipulated variable of the R component and / or the B component increases and the sensor values IR and IB increase, the value G of the G component decreases, and as a result, the measurement result Gt decreases.

The operation amount of the G component, the operation amount of the R component, and the operation amount of the B component set in this way are transmitted to the lighting processing device 3 via the communication unit 13. Then, an RGB value reflecting the operation amount of the R component, the operation amount of the G component, and the operation amount of the B component can be obtained.

(G addition processing)
FIG. 19 is a flowchart showing the details of the G addition process in step S1706 shown in FIG. The control unit 12 determines whether or not the manipulated variable of the G component is smaller than 255 (step S1901).

When the control unit 12 determines in step S1901 that the operation amount of the G component is smaller than 255 (step S1901: Y), the control unit 12 adds 1 to the operation amount of the G component to set a new operation amount (step). S1902), the process is terminated.

On the other hand, when the control unit 12 determines in step S1901 that the manipulated variable of the G component is not smaller than 255 (step S1901: N), the control unit 12 determines whether or not the manipulated variable of the R component is larger than 0 (step S1901: N). Step S1903).

When the control unit 12 determines in step S1903 that the operation amount of the R component is larger than 0 (step S1903: Y), the control unit 12 subtracts 1 from the operation amount of the R component to set a new operation amount (step). S1904), the process proceeds to step S1905.

On the other hand, when the control unit 12 determines in step S1903 that the manipulated variable of the R component is not larger than 0 (step S1903: N), the control unit 12 proceeds to step S1905.

The control unit 12 shifts from step S1903 or step S1904 and determines whether or not the manipulated variable of the B component is larger than 0 (step S1905).

When the control unit 12 determines in step S1905 that the operation amount of the B component is larger than 0 (step S1905: Y), the control unit 12 subtracts 1 from the operation amount of the B component to set a new operation amount (step). S1906), the process is terminated.

On the other hand, when the control unit 12 determines in step S1905 that the manipulated variable of the B component is not larger than 0 (step S1905: N), the control unit 12 ends the process.

As described above, in the G addition process, when the operation amount of the G component is smaller than 255, the operation amount of the G component can be increased. Therefore, 1 is added to the operation amount of the G component to obtain a new operation amount. Set. Thereby, the measurement result Gt of the G component can be increased.

On the other hand, when the manipulated amount of the G component is not smaller than 255, the manipulated amount of the G component is the maximum 255, so that the manipulated amount of the G component cannot be increased. Therefore, instead of increasing the manipulated amount of the G component, the manipulated amount of the R component and / or the B component is decreased. Thereby, the measurement result Gt of the G component can be increased. This is because the RGB values are calculated relative values as shown in the formula (6) described later. Specifically, when the manipulated variable of the R component and / or the B component decreases and the sensor values IR and IB become smaller, the value G of the G component becomes larger, and as a result, the measurement result Gt becomes larger.

The operation amount of the G component, the operation amount of the R component, and the operation amount of the B component set in this way are transmitted to the lighting processing device 3 via the communication unit 13. Then, an RGB value reflecting the operation amount of the R component, the operation amount of the G component, and the operation amount of the B component can be obtained.

(B processing routine)
FIG. 20 is a flowchart showing the details of the B processing routine in steps S1203, S1205, S1207, S1209, S1211, and S1213 shown in FIG. The control unit 12 determines whether or not the difference absolute value ABd is smaller than 2 (within the allowable range) (step S2001).

When the control unit 12 determines in step S2001 that the difference absolute value ABd is smaller than 2 (step S2001: Y), the control unit 12 sets the flag Bflg = true assuming that the difference absolute value ABd of the B component is within the allowable range. (Step S2002), the process is terminated.

On the other hand, when the control unit 12 determines in step S2001 that the difference absolute value ABd is not smaller than 2 (step S20011: N), it is assumed that the difference absolute value ABd of the B component is not within the allowable range, and the flag Bflg = false. Is set (step S2003).

The control unit 12 shifts from step S2003 and determines whether or not the difference Bd is smaller than 0, that is, whether or not the reference value Bm is smaller than the measurement result Bt (step S2004). When the control unit 12 determines in step S2004 that the difference Bd is smaller than 0 (step S2004: Y), the control unit 12 performs a B subtraction process for reducing the measurement result Bt (step S2005), and ends the process. The details of the B subtraction process in step S2005 will be described later.

On the other hand, when the control unit 12 determines in step S2004 that the difference Bd is not smaller than 0 (step S2004: N), the control unit 12 performs a B addition process for increasing the measurement result Bt (step S2006), and performs the process. finish. The details of the B addition process in step S2006 will be described later.

(B subtraction process)
FIG. 21 is a flowchart showing the details of the B subtraction process in step S2005 shown in FIG. 20. The control unit 12 determines whether or not the manipulated variable of the B component is larger than 0 (step S2101).

When the control unit 12 determines in step S2101 that the operation amount of the B component is larger than 0 (step S2101: Y), the control unit 12 subtracts 1 from the operation amount of the B component to set a new operation amount (step). S2102), the process is terminated.

On the other hand, when the control unit 12 determines in step S2101 that the manipulated variable of the B component is not greater than 0 (step S2101: N), the control unit 12 determines whether or not the manipulated variable of the R component is smaller than 255 (step S2101: N). Step S2103).

When the control unit 12 determines in step S2103 that the operation amount of the R component is smaller than 255 (step S2103: Y), the control unit 12 adds 1 to the operation amount of the R component to set a new operation amount (step). S2104), the process proceeds to step S2105.

On the other hand, when the control unit 12 determines in step S2103 that the manipulated variable of the R component is not smaller than 255 (step S2103: N), the control unit 12 proceeds to step S2105.

The control unit 12 shifts from step S2103 or step S2104 to determine whether or not the manipulated variable of the G component is smaller than 255 (step S2105).

When the control unit 12 determines in step S2105 that the operation amount of the G component is smaller than 255 (step S2105: Y), the control unit 12 adds 1 to the operation amount of the G component to set a new operation amount (step). S2106), the process is terminated.

On the other hand, when the control unit 12 determines in step S2105 that the manipulated variable of the G component is not smaller than 255 (step S2105: N), the control unit 12 ends the process.

In this way, in the B subtraction process, when the operation amount of the B component is larger than 0, the operation amount of the B component can be reduced. Therefore, 1 is subtracted from the operation amount of the B component to obtain a new operation amount. Set. As a result, the measurement result Bt of the B component can be reduced.

On the other hand, when the manipulated variable of the B component is not larger than 0, the manipulated variable is the minimum 0, so that the manipulated variable of the B component cannot be reduced. Therefore, instead of decreasing the manipulated amount of the B component, the manipulated amount of the R component and / or the G component is increased. As a result, the measurement result Bt of the B component can be reduced. This is because the RGB values are calculated relative values as shown in the formula (7) described later. Specifically, when the manipulated variable of the R component and / or the G component increases and the sensor values IR and IG increase, the value B of the B component decreases, and as a result, the measurement result Bt decreases.

The operation amount of the B component, the operation amount of the R component, and the operation amount of the G component set in this way are transmitted to the lighting processing device 3 via the communication unit 13. Then, an RGB value reflecting the operation amount of the R component, the operation amount of the G component, and the operation amount of the B component can be obtained.

(B addition processing)
FIG. 22 is a flowchart showing the details of the B addition process in step S2006 shown in FIG. 20. The control unit 12 determines whether or not the manipulated variable of the B component is smaller than 255 (step S2201).

When the control unit 12 determines in step S2201 that the operation amount of the B component is smaller than 255 (step S2201: Y), the control unit 12 adds 1 to the operation amount of the B component to set a new operation amount (step). S2202), the process is terminated.

On the other hand, when the control unit 12 determines in step S2201 that the manipulated variable of the B component is not smaller than 255 (step S2201: N), the control unit 12 determines whether or not the manipulated variable of the R component is larger than 0 (step S2201: N). Step S2203).

When the control unit 12 determines in step S2203 that the operation amount of the R component is larger than 0 (step S2203: Y), 1 is subtracted from the operation amount of the R component to set a new operation amount (step). S2204), the process proceeds to step S2205.

On the other hand, when the control unit 12 determines in step S2203 that the manipulated variable of the R component is not larger than 0 (step S2203: N), the control unit 12 proceeds to step S2205.

The control unit 12 shifts from step S2203 or step S2204 to determine whether or not the manipulated variable of the G component is larger than 0 (step S2205).

When the control unit 12 determines in step S2205 that the operation amount of the G component is larger than 0 (step S2205: Y), the control unit 12 subtracts 1 from the operation amount of the G component to set a new operation amount (step). S2206), the process is terminated.

On the other hand, when the control unit 12 determines in step S2205 that the manipulated variable of the G component is not larger than 0 (step S2205: N), the control unit 12 ends the process.

As described above, in the B addition process, when the operation amount of the B component is smaller than 255, the operation amount of the B component can be increased. Therefore, 1 is added to the operation amount of the B component to obtain a new operation amount. Set. As a result, the measurement result Bt of the B component can be increased.

On the other hand, when the manipulated amount of the B component is not smaller than 255, the manipulated amount of the B component is the maximum 255, so that the manipulated amount of the B component cannot be increased. Therefore, instead of increasing the manipulated amount of the B component, the manipulated amount of the R component and / or the G component is decreased. As a result, the measurement result Bt of the B component can be increased. This is because the RGB values are calculated relative values as shown in the formula (7) described later. Specifically, when the manipulated variable of the R component and / or the G component decreases and the sensor values IR and IG become smaller, the value B of the B component becomes larger, and as a result, the measurement result Bt becomes larger.

The operation amount of the B component, the operation amount of the R component, and the operation amount of the G component set in this way are transmitted to the lighting processing device 3 via the communication unit 13. Then, an RGB value reflecting the operation amount of the R component, the operation amount of the G component, and the operation amount of the B component can be obtained.

As described above, the control unit 12 has the difference absolute value ARd, AGd, ABd between the reference value Rm, Gm, Bm and the measurement result Rt, Gt, Bt for each combination in which the order of each component of RGB is changed. The manipulated variables of the R, G, and B components are set so that each of them is within the permissible range.

As a result, the difference absolute values ARd, AGd, and ABd are allowed in response to the characteristic that when the operation amount of any one of the RGB components is changed, not only the component but also the measurement results of the other two components are changed. It can be guided within the range in a short time. That is, by sequentially performing the processing for each combination in which the order of each component of RGB is changed, the influence on the measurement result of the other two components caused by the change in the operation amount of one component is gradually reduced. As a result, the difference absolute values ARd, AGd, and ABd can be converged within an allowable range.

Further, when the manipulated variable of one component is the upper limit value or the lower limit value and cannot be increased or decreased any more, the control unit 12 sets the manipulated variable of the other two components in the opposite direction to the one component. I tried to increase or decrease.

As a result, even if the manipulated variable of the component cannot be increased or decreased, the RGB value is relatively determined by the calculation of the equations (5), (6) and (7) described later, and the component is used. The value of can be changed in a desired direction.

Therefore, according to another specific example of RGB control shown in FIG. 12, the fixture light of the lighting fixture 4 having the specifications with the R component, the G component, and the B component as input parameters is controlled, and the RGB value of the fixture light is a reference value. It comes to follow RGB_S.

In another specific example of RGB control shown in FIG. 12, the control unit 12 performs processing of 6 combinations in which the order of each component of RGB is changed in steps S1203, S1205, S1207, S1209, S1211, S1213. I tried to do it in the order of. On the other hand, the control unit 12 may perform the processing of these combinations in any order.

[Lighting processing device 3]
Next, the lighting processing devices 3-1 to 3-N shown in FIG. 1 will be described. FIG. 9 is a block diagram showing a configuration example of the lighting processing device 3. The lighting processing device 3 includes a communication unit 30, a processing unit 31, a communication unit 32, and a color sensor 33.

The communication unit 30 receives the illumination control signal of the operation amount from the illumination control device 1 via the wireless communication path, and outputs the illumination control signal of the operation amount to the processing unit 31. Further, the communication unit 30 inputs the RGB value of the fixture light of the lighting fixture 4 from the processing unit 31, and transmits the RGB value of the fixture light to the lighting control device 1 via the wireless communication path.

The processing unit 31 inputs the illumination control signal of the operation amount from the communication unit 30, and outputs the illumination control signal of the operation amount to the communication unit 32. Further, the processing unit 31 inputs a color sensor signal of the fixture light of the lighting fixture 4 from the color sensor 33, converts it into an RGB value of the fixture light of the lighting fixture 4, and outputs it to the communication unit 30.

For example, assuming that the sensor value of the R component in the color sensor signal is IR, the sensor value of the G component is IG, and the sensor value of the B component is IB, the converted RGB value is expressed by the following equation. The converted R component value is R, the G component value is G, and the B component value is B. The range of R, G and B is 0 to 255.
[Number 5]
R = {IR / √ (IR ² + IG ² + IB ² )} × 255 ・ ・ ・ (5)
[Number 6]
G = {IG / √ (IR ² + IG ² + IB ² )} × 255 ・ ・ ・ (6)
[Number 7]
B = {IB / √ (IR ² + IG ² + IB ² )} × 255 ・ ・ ・ (7)

The communication unit 32 converts between the illumination control signal by RS232C from the processing unit 31 and the DMX signal of RS485. It is assumed that the processing unit 31 and the communication unit 32 are connected by RS232C, and the communication unit 32 and the DMX device 40 are connected by a DMX cable.

The communication unit 32 inputs the illumination control signal of the operation amount from the processing unit 31, converts the illumination control signal by RS232C into the DMX signal of RS485, and provides the DMX signal of the operation amount after conversion to the DMX provided in the luminaire 4. It is transmitted to the device 40.

The color sensor 33 detects the emission color emitted by the lighting fixture 4 and outputs it to the processing unit 31 as a color sensor signal of the fixture light.

The color sensor 33 is installed in a place close to the light emitting portion of the lighting fixture 4 and capable of receiving the irradiation without impairing the irradiation of the lighting fixture 4. Further, the color sensor 33 may be installed inside the luminaire 4 or may be installed outside the luminaire 4.

The DMX device 40 provided in the lighting fixture 4 receives a DMX signal according to the DMX communication standard with the lighting processing device 3. The DMX device 40 receives the DMX signal of the manipulated variable from the communication unit 32 of the lighting processing device 3, and the lighting fixture 4 emits light in a light emitting color according to the manipulated variable.

As described above, according to the lighting control device 1-1 operating in the ambient light measurement mode of the first embodiment shown in FIG. 3, the setting unit 10 is the RGB value of the ambient light measured by the ambient light measuring device 2. Is set to the reference value RGB_S. Further, according to the lighting control device 1-2 that operates in the fixture light measurement mode of the second embodiment shown in FIG. 4, the setting unit 10'is the reference lighting fixture 4 measured by the lighting processing device 3-n. The RGB value of the fixture light of -n is set to the reference value RGB_S.

The control units 12-1 to 12-N control the operation amount so that the difference ΔRGB between the reference value RGB_S and the RGB value of the fixture light of the corresponding lighting fixtures 4-1 to 4-N becomes 0, respectively. calculate. Then, when the control units 12-1 to 12-N determine that the absolute value of the difference ΔRGB is the minimum, the output level of the manipulated variable at that time is determined to be a fixed output level. Each operation amount determined to be a fixed output level is transmitted to the lighting processing devices 3-1 to 3-N, and the luminaires 4-1 to 4-N emit light in the emission color according to the operation amount. do.

Here, the fixture light of the luminaires 4-1 to 4-N is detected by the color sensor 33 provided in the luminaires 3-1 to 3-N, and the luminaires 3-1 to 3-N are common. Since it is a device, it can be said that the detection performance of each color sensor 33 is the same.

As a result, even if there is an error in the emission color emitted between the lighting fixtures 4-1 to 4-N according to the same operation amount, the respective feedback control by the control units 12-1 to 12-N In, each emission color can be made to follow the reference value RGB_S. Further, even if the input parameter specifications differ between the lighting fixtures 4-1 to 4-N, the control units 12-1 to 12-N control HS control, HSI control, K control, and KG according to the specifications. Each emission color can be made to follow the reference value RGB_S by control, RGB control or RGBI control. That is, it is possible to control so that the RGB values of the light of each of the lighting fixtures 4-1 to 4-N are the same.

Therefore, by controlling the emission color of each of the plurality of lighting fixtures 4-1 to 4-N, it is possible to realize an environment of a unified hue as a whole.

In a conventional broadcast production site, the operator manually determines the emission color of the lighting with the eyes or indirectly by the camera image to manually set the parameters of multiple lighting fixtures 4-1 to 4-N. It was adjusted at. In the first and second embodiments, such a processing load can be eliminated, the fixture light can be easily and precisely adjusted in a short time, and the operation at the broadcasting production site can be improved. ..

As the hardware configuration of the lighting control devices 1-1 and 1-2 according to the first and second embodiments, a normal computer can be used. The lighting control devices 1-1 and 1-2 are composed of a volatile storage medium such as a CPU and RAM, a non-volatile storage medium such as a ROM, and a computer provided with an interface and the like. Functions of setting unit 10, subtraction unit 11-1 to 11-N, control unit 12-1 to 12-N, communication unit 13-0, 13-1 to 13-N, etc. provided in the lighting control device 1-1. Is realized by causing the CPU to execute a program describing these functions. Further, the setting unit 10'provided in the lighting control device 1-2, the subtraction units 11-1 to 11-N, the control units 12-1 to 12-N, the communication units 13-0, 13-1 to 13-N, and the communication unit 13-1 to 13-N. Each function such as the switching unit 14-n is also realized by causing the CPU to execute a program describing these functions.

These programs are stored in the storage medium, read by the CPU, and executed. In addition, these programs can be stored and distributed in storage media such as magnetic disks (floppy (registered trademark) disks, hard disks, etc.), optical disks (CD-ROM, DVD, etc.), semiconductor memories, etc., and can be distributed via a network. You can also send and receive.

Although the present invention has been described above with reference to embodiments, the present invention is not limited to the above-described embodiment and can be variously modified without departing from the technical idea. For example, in the above embodiment, as shown in FIG. 1 and the like, the lighting control device 1, the ambient light measuring device 2, and the lighting processing devices 3-1 to 3-N are connected by a wireless communication path. .. On the other hand, instead of the wireless communication path, it may be connected by a wired communication path.

Further, in the above embodiment, the communication unit 32 provided in the lighting processing devices 3-1 to 3-N and the DMX device 40 provided in the lighting fixtures 4-1 to 4-N are DMX according to the DMX communication standard. Although the signal is transmitted and received, the signal may be transmitted and received according to other communication standards.

Further, in the above-described embodiment, the lighting control device 1 uses ambient light or a predetermined fixture light as a reference light, and causes the fixture light of the lighting fixtures 4-1 to 4-N to be controlled to follow the reference light. On the other hand, the lighting control device 1 sets a new reference light based on the reference light (for example, a new reference light having a color temperature of 300 kelvin higher than that of the ambient light), and the lighting fixtures 4-1 to be controlled. The 4-N instrument light may be made to follow the new reference light.

For example, the setting unit 10 of the lighting control device 1-1 adds or subtracts a predetermined value to the RGB value of the ambient light to obtain a new reference value RGB_S, and subtracts the new reference value RGB_S from the subtraction units 11-1 to 11-. Output to N. Further, the setting unit 10'of the lighting control device 1-2 obtains a new reference value RGB_S by adding or subtracting a predetermined value to the RGB value of the fixture light of the lighting fixture 4-n, and obtains a new reference value RGB_S. Output to the subtraction units 11-1 to 11-N excluding the subtraction unit 11-n.

Further, in the above embodiment, the reference value RGB_S and the measurement results of the plurality of instrument lights to be controlled are used as RGB values, but Hugh H and saturation S may be used instead of the RGB values. Further, Hugh H, saturation S and intensity I may be used, color temperature K may be used, color temperature K and green component G may be used, and RGB values and intensity I may be used. In this case, instead of receiving the RGB values as the measurement results from the ambient light measuring device 2 and the lighting processing devices 3-1 to 3-N, the lighting control device 1 receives Hugh H and saturation S, or Hugh H, saturation S and. Receives intensity I, or color temperature K, or color temperature K and green component G, or RGB values and intensity I.

Further, in the lighting control device 1-1 of FIG. 3 and the lighting control device 1-2 of FIG. 4, the subtraction units 11-1 to 11-N input the RGB values of the fixture light from the communication units 13-1 to 13-N. I tried to enter it. On the other hand, the lighting control devices 1-1 and 1-2 may be provided with a multiplier between the subtraction units 11-1 to 11-N and the communication units 13-1 to 13-N, respectively. .. The multiplier inputs the RGB values of the instrument light from the communication units 13-1 to 13-N, multiplies the RGB values of the instrument light by a preset coefficient, and subtracts the RGB values after multiplication from the subtraction units 11-1 to 11-1 to. Output to 11-N. The preset coefficient is a value for absorbing the individual difference of the color sensor 33 provided in each of the lighting processing devices 3-1 to 3-N. As a result, the subtraction units 11-1 to 11-N can input the RGB values of the instrument light excluding the individual differences of the color sensor 33, and the control units 12-1 to 12-N can operate with high accuracy. The amount can be calculated. Therefore, it is possible to further realize an environment with a unified hue as a whole. The same applies to the case where a multiplier is provided between the setting unit 10 and the communication unit 13-0.

Further, in FIGS. 3 and 4, the lighting control devices 1-1 and 1-2 are described so as to include the communication units 13-0 to 13-N, but for convenience of explanation, the communication units 13- It only shows that 0 to 13-N correspond to the ambient light measuring device 2 and the lighting processing device 3-1 to 3-N, respectively. The lighting control devices 1-1 and 1-2 as actual hardware do not individually include communication units 13-0 to 13-N, but include one communication unit, and the communication unit and ambient light. Communication is performed between the measuring device 2 and the lighting processing devices 3-1 to 3-N.

Further, in the control units 12-1 to 12-N of the lighting control devices 1-1 and 1-2, the difference ΔRGB between the reference value RGB_S and the RGB value of the instrument light becomes 0 (matches 0). Although the operation amount is calculated, the operation amount may be calculated so that the difference ΔRGB becomes small. Further, the control units 12-1 to 12-N may calculate the operation amount so that the difference ΔRGB is close to 0, or the operation amount is calculated so that the difference ΔRGB matches a predetermined value other than 0. You may try to do it.

1 Lighting control device 2 Ambient light measurement device 3 Lighting processing device 4 Lighting equipment 10, 10'Setting unit 11 Subtraction unit 12 Control unit 13, 30, 32 Communication unit 14 Switching unit 31 Processing unit 33 Color sensor 40 DMX equipment

Claims (10)

In a lighting control device that controls the emission color of multiple lighting fixtures,
A setting unit that sets the value of a predetermined color as a reference value, and
A subtraction unit for each system corresponding to each of the plurality of lighting fixtures,
A control unit for each system corresponding to each of the plurality of lighting fixtures is provided.
The setting unit is
The measurement result of the ambient light color in the predetermined area is set to the reference value, or the measurement result of the emission color of one of the plurality of lighting fixtures is set to the reference value and set to the reference value. Set a new reference value based on
The subtraction part for each system is
The difference between the new reference value set by the setting unit and the measurement result of the emission color of the lighting equipment in the system is calculated .
The control unit for each system
The operation amount is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, and the emission color of the lighting equipment of the system is operated by the operation amount, and the difference is the minimum. A lighting control device characterized in that the operation amount at the time of is determined to be a fixed operation amount. In the lighting control device according to claim 1 ,
Hue and saturation, or hue, saturation and intensity, or color temperature, or color temperature and green component, or RGB values, or A lighting control device characterized by having an RGB value and an intensity. In a lighting control device that controls the emission color of multiple lighting fixtures,
A setting unit that sets the value of a predetermined color as a reference value, and
A subtraction unit for each system corresponding to each of the plurality of lighting fixtures,
A control unit for each system corresponding to each of the plurality of lighting fixtures is provided.
The subtraction part for each system is
The difference between the reference value set by the setting unit and the measurement result of the emission color of the lighting equipment in the system is calculated.
The control unit for each system
The operation amount is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, and the emission color of the lighting equipment of the system is operated by the operation amount, and the difference is the minimum. The operation amount at the time of is determined to be a fixed operation amount,
The plurality of luminaires include luminaires whose emission color is manipulated by hue (hue) and saturation (saturation).
The control unit of the system of the lighting equipment is
While operating the emission color of the lighting fixture with a predetermined value of the saturation, the difference calculated by the subtraction unit of the system is set to 0 or reduced. The hue (hue) is calculated, and the hue (hue) when the difference is the minimum is determined as the fixed hue (hue).
While operating the emission color of the luminaire with the fixed hue, the saturation (saturation) so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. Saturation) is calculated, and the saturation when the difference is the minimum is determined as the fixed saturation.
A lighting control device characterized in that the emission color of the luminaire is operated by the fixed hue (hugh) and the fixed saturation (saturation). In a lighting control device that controls the emission color of multiple lighting fixtures,
A setting unit that sets the value of a predetermined color as a reference value, and
A subtraction unit for each system corresponding to each of the plurality of lighting fixtures,
A control unit for each system corresponding to each of the plurality of lighting fixtures is provided.
The subtraction part for each system is
The difference between the reference value set by the setting unit and the measurement result of the emission color of the lighting equipment in the system is calculated.
The control unit for each system
The operation amount is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, and the emission color of the lighting equipment of the system is operated by the operation amount, and the difference is the minimum. The operation amount at the time of is determined to be a fixed operation amount,
The plurality of luminaires include a luminaire whose emission color is controlled by a color temperature and a green component.
The control unit of the system of the lighting equipment is
While operating the emission color of the luminaire with a predetermined value of the green component, the color temperature is set so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. Calculate and determine the color temperature when the difference is the minimum as the fixed color temperature.
While operating the emission color of the luminaire at the fixed color temperature, the green component is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small. , The green component when the difference is the minimum is determined as the fixed green component.
A lighting control device characterized in that the emission color of the lighting fixture is operated by the fixed color temperature and the fixed green component. In a lighting control device that controls the emission color of multiple lighting fixtures,
A setting unit that sets the value of a predetermined color as a reference value, and
A subtraction unit for each system corresponding to each of the plurality of lighting fixtures,
A control unit for each system corresponding to each of the plurality of lighting fixtures is provided.
The subtraction part for each system is
The difference between the reference value set by the setting unit and the measurement result of the emission color of the lighting equipment in the system is calculated.
The control unit for each system
The operation amount is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, and the emission color of the lighting equipment of the system is operated by the operation amount, and the difference is the minimum. The operation amount at the time of is determined to be a fixed operation amount,
The plurality of luminaires include a luminaire whose emission color is manipulated by an RGB value, and each of the three component values constituting the RGB value is subjected to a first manipulated amount, a second manipulated amount, and a second manipulated amount. As the third operation amount,
The control unit of the system of the lighting equipment is
The difference calculated by the subtraction unit of the system is 0 in a state where the emission color of the lighting fixture is operated by the predetermined value of the second operation amount and the predetermined value of the third operation amount. The first operation amount is calculated so as to be large or small, and the first operation amount when the difference is the minimum is determined as the first fixed operation amount.
In a state where the emission color of the luminaire is operated by the predetermined values of the first fixed operation amount and the third operation amount, the difference calculated by the subtraction unit of the system is set to 0. , Or the second operation amount is calculated so as to be smaller, and the second operation amount when the difference is the minimum is determined as the second fixed operation amount.
In a state where the emission color of the luminaire is operated by the first fixed operation amount and the second fixed operation amount, the difference calculated by the subtraction unit of the system is set to 0 or. The third operation amount is calculated so as to be small, and the third operation amount when the difference is the minimum is determined as the third fixed operation amount.
A lighting control device characterized in that the emission color of the lighting fixture is operated by the first fixed operation amount, the second fixed operation amount, and the third fixed operation amount. In a lighting control device that controls the emission color of multiple lighting fixtures,
A setting unit that sets the value of a predetermined color as a reference value, and
A subtraction unit for each system corresponding to each of the plurality of lighting fixtures,
A control unit for each system corresponding to each of the plurality of lighting fixtures is provided.
The subtraction part for each system is
The difference between the reference value set by the setting unit and the measurement result of the emission color of the lighting equipment in the system is calculated.
The control unit for each system
The operation amount is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, and the emission color of the lighting equipment of the system is operated by the operation amount, and the difference is the minimum. The operation amount at the time of is determined to be a fixed operation amount,
The reference value and the measurement result are taken as RGB values, respectively, and the plurality of luminaires include a luminaire whose emission color is controlled by hue (hue), saturation (saturation), and intensity (intensity). Ori,
The control unit of the system of the lighting equipment is
The maximum value among the values of each component constituting the RGB value of the reference value is set as the reference component value of the first component.
The intensity is decremented while operating the emission color of the luminaire with the predetermined value of the hue (hue) and the predetermined value of the saturation (saturation), and the measurement result is the first. The intensity that minimizes the difference between the value of one component and the reference component value of the first component is obtained, and the intensity is determined as a fixed operation amount.
The minimum value among the values of each component constituting the RGB value of the reference value is set as the reference component value of the third component.
The saturation is incremented while the emission color of the luminaire is being manipulated with a predetermined value of the hue and the fixed operation amount of the intensity, and the measurement result is described as described above. The saturation that minimizes the difference between the value of the third component and the reference component value of the third component is obtained, and the saturation is determined as a fixed operation amount.
Of the values of each component constituting the RGB value of the reference value, the remaining values other than the maximum value and the minimum value are set as the reference component values of the second component.
The initial value of hue (hue) is set based on the fixed operation amount of the intensity and the fixed operation amount of the saturation.
While the emission color of the luminaire is being operated by the fixed operation amount of the intensity and the fixed operation amount of the saturation, the hue is incremented from the initial value. The hue (hue) that minimizes the difference between the value of the second component and the reference component value of the second component in the measurement result is obtained, and the hue (hue) is determined as a fixed operation amount.
Illumination control characterized in that the emission color of the luminaire is manipulated by the fixed operation amount of the intensity (intensity), the fixed operation amount of the saturation (saturation), and the fixed operation amount of the hue (hue). Device. In a lighting control device that controls the emission color of multiple lighting fixtures,
A setting unit that sets the value of a predetermined color as a reference value, and
A subtraction unit for each system corresponding to each of the plurality of lighting fixtures,
A control unit for each system corresponding to each of the plurality of lighting fixtures is provided.
The subtraction part for each system is
The difference between the reference value set by the setting unit and the measurement result of the emission color of the lighting equipment in the system is calculated.
The control unit for each system
The operation amount is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, and the emission color of the lighting equipment of the system is operated by the operation amount, and the difference is the minimum. The operation amount at the time of is determined to be a fixed operation amount,
The reference value and the measurement result are each set to RGB values, and the plurality of lighting fixtures include a lighting fixture whose emission color is manipulated by the RGB values.
The control unit of the system of the lighting equipment is
The maximum value among the values of each component constituting the RGB value of the reference value is set as the reference component value of the first component.
The operation amount of the first component is decremented while the emission color of the luminaire is controlled by the predetermined value of each component for the remaining two components other than the first component, and the measurement result is described. The first operation amount that minimizes the difference between the value of the first component and the reference component value of the first component is obtained, and the first operation amount is determined as a fixed operation amount.
The minimum value among the values of each component constituting the RGB value of the reference value is set as the reference component value of the third component.
In a state where the emission color of the lighting fixture is operated by the fixed operation amount of the first component and the predetermined value of the remaining second component, the operation amount of the third component is incremented, and the first of the measurement results. The operation amount of the third component that minimizes the difference between the value of the three components and the reference component value of the third component is obtained, and the operation amount of the third component is determined as a fixed operation amount.
Of the values of each component constituting the RGB value of the reference value, the remaining values other than the maximum value and the minimum value are set as the reference component values of the second component.
Based on the fixed operation amount of the first component and the fixed operation amount of the third component, the initial value of the operation amount of the second component is set.
While the emission color of the lighting fixture is being operated by the fixed operation amount of the first component and the fixed operation amount of the third component, the operation amount of the second component is incremented from the initial value and the measurement is performed. The manipulated variable of the second component that minimizes the difference between the value of the second component and the reference component value of the second component as a result is obtained, and the manipulated variable of the second component is determined as the fixed manipulated variable. ,
A lighting control device characterized in that the emission color of the lighting fixture is controlled by the fixed operation amount of the first component, the fixed operation amount of the second component, and the fixed operation amount of the third component. In a lighting control device that controls the emission color of multiple lighting fixtures,
A setting unit that sets the value of a predetermined color as a reference value, and
A subtraction unit for each system corresponding to each of the plurality of lighting fixtures,
A control unit for each system corresponding to each of the plurality of lighting fixtures is provided.
The subtraction part for each system is
The difference between the reference value set by the setting unit and the measurement result of the emission color of the lighting equipment in the system is calculated.
The control unit for each system
The operation amount is calculated so that the difference calculated by the subtraction unit of the system becomes 0 or becomes small, and the emission color of the lighting equipment of the system is operated by the operation amount, and the difference is the minimum. The operation amount at the time of is determined to be a fixed operation amount,
The reference value and the measurement result are taken as RGB values, respectively.
The new control unit for each system is
Regarding the difference for each RGB component calculated by the subtraction unit in the system, the process of calculating the absolute value of the difference as the absolute difference is defined as the first process.
For each component of RGB, the operation amount of the component is set in order so that the difference absolute value is within a predetermined allowable range, and the processing of operating the emission color of the lighting equipment of the system with the operation amount is performed. As the second process,
The first process and the second process are repeated for six combinations in which the order of each component of RGB in the second process is changed.
A lighting control device characterized by that. In the lighting control device according to claim 8 ,
When the operation amount of the component is the lower limit when the operation amount of the component is decreased in the second treatment, the operation amount of at least one of the other two components is increased and the operation amount of the component is increased. A lighting control device, characterized in that, when the operation amount of the component is the upper limit value when the amount is increased, the processing is performed to decrease the operation amount of at least one of the other two components. A lighting control program for operating a computer as the lighting control device according to any one of claims 1 to 9 .

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