JP2020068137A - Converter and illumination system using the same - Google Patents

Abstract

To provide a converter and the like capable of changing color produced by an illumination appliance in a good-looking manner.SOLUTION: A converter 2 is used for an illumination system 100 comprising: a controller 1 for transmitting an illumination control signal including color information for identifying color of light in a predetermined period; the converter 2 that when receiving the illumination control signal from the controller 1, transmits a series of illumination presentation signals, each of which includes a set of color data corresponding to the color information, in a specific period shorter than the predetermined period; and an illumination appliance 4 for emitting light according to the series of illumination presentation signals received from the converter 2. The set of color data is used for interpolating between color identified using the last color information and color identified using the current color information so that a change in color of light to be emitted by the illumination appliance 4 from the color identified using the last color information and the color identified using the current color information is a color change along a black body locus.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to converters and lighting systems in which they are used.

  Conventionally, a lighting system including a lighting fixture and a controller that controls the lighting fixture has been developed (see Patent Document 1). In general, in communication between a lighting fixture and a controller, two types of communication standards are used, which are a communication standard for performing low speed communication and a communication standard for performing high speed communication.

  Specifically, in a lighting system that is used in an office space or the like and has a low frequency of changes in the color of emitted light, and a controller that controls the lighting device, a communication standard that executes low-speed communication Is used. On the other hand, in a lighting system that is used in a social space or the like and has a high frequency of changes in emission color, and a controller that controls the lighting device, a communication standard for performing high-speed communication is used. There is.

JP, 2011-238564, A

  There is a need to control a lighting device that uses a high speed communication standard by using a controller that uses a low speed communication standard. In this case, it is necessary to connect a controller that uses the low speed communication standard and a lighting device that uses the high speed communication standard through a converter that changes the communication standard. In this lighting system, the color change of the light emitted by the luminaire is interpolated from the less frequent color change instructed by the low speed communication to the more frequently color change instructed by the high speed communication.

  However, when the color change is linearly interpolated by the above-mentioned converter, the interpolated color may be a color largely deviated from the black body locus in the middle of the color change. In this case, the luminaire emits unsightly light in the middle of the color change. Therefore, there is a need for a lighting system that can make the change in the color of the light emitted by the lighting fixture look good.

  The present disclosure has been made in view of the problems of the related art. Then, an object of the present invention is to provide a converter and a lighting system using the same, which can make a change in color of light emitted from a lighting device look good when converting low-speed communication to high-speed communication.

  In order to solve the problems described above, a converter according to a first aspect of the present disclosure includes a controller that transmits an illumination control signal including color information that specifies a color of light at a predetermined cycle, and the controller from the controller, When receiving a lighting control signal, a series of lighting effect signals each including a set of color data corresponding to the color information in a specific cycle shorter than the predetermined cycle within the period of the predetermined cycle. A converter for use in a lighting system comprising a converter for transmitting and a luminaire that emits light according to a series of lighting effect signals received from the converter, wherein the set of color data is The previous color so that the color change of the light emitted by the lighting device from the color specified by the color information to the color specified by the color information this time becomes a change along the black body locus. By information And interpolating the color specified by the color and the current of the color information specified Te.

  A lighting system according to a second aspect of the present disclosure, in a predetermined cycle, a controller that transmits a lighting control signal including color information that specifies a color of light, and a case where the lighting control signal is received from the controller, A converter for transmitting a series of lighting effect signals each including a set of color data corresponding to the color information at a specific cycle shorter than the predetermined cycle within the period of the predetermined cycle, and the converter. A lighting fixture that emits light in accordance with a series of lighting effect signals received from, and the set of color data is from a color specified by the previous color information to a color specified by the color information this time. The color specified by the previous color information and the color specified by the current color information are interpolated so that the change in the color of the light emitted from the luminaire changes along the black body locus. The .

  According to the present disclosure, when the low speed communication is converted to the high speed communication, it is possible to make the change in the color of the light emitted by the lighting fixture look good.

It is a schematic diagram which shows the structure of the illumination system of embodiment. 5 is a timing chart of signals when converting from low speed communication to high speed communication in the lighting system of the embodiment. FIG. 6 is a graph in which a black body locus is drawn on a colorimetric color temperature diagram and an arrow showing a path of a color change when the color change is linearly interpolated is further overlapped. It is a graph in which a blackbody locus is drawn on a colorimetric color temperature diagram, and arrows showing the paths of color changes when color changes are interpolated along the blackbody locus are further drawn. . It is a figure for demonstrating a set of color data extracted from a group of color data memorize | stored as a data table in the converter of the illumination system of embodiment. It is a block diagram for demonstrating the internal structure of the converter of the illumination system of embodiment. 7 is a flowchart for explaining light adjustment color processing performed by the converter of the illumination system of the embodiment.

  As shown in FIG. 1, the lighting system 100 includes a controller 1, a converter 2, a normal lighting fixture 3, a lighting fixture 4 for performance, and an operation terminal 5.

  The controller 1 and the normal lighting equipment 3 communicate using a communication standard that executes low-speed communication. Therefore, the controller 1 directly controls the normal lighting fixture 3 by low speed communication. On the other hand, the staging lighting fixture 4 communicates using a communication standard for performing high-speed communication.

  A converter 2 is provided between the controller 1 and the production lighting fixture 4. The converter 2 converts low speed communication into high speed communication. Therefore, the controller 1 indirectly controls the lighting device 4 for performance via the converter 2 through high-speed communication. Therefore, with only the controller 1 that uses the communication standard that executes low-speed communication, a normal lighting device 3 that uses the communication standard that executes low-speed communication and a lighting device for performance that uses the communication standard that executes high-speed communication Both of the four can be controlled.

  The normal lighting device 3 is a lighting device in which the frequency of the emitted color change is relatively low. For example, the normal lighting device 3 is used for an office space or the like. On the other hand, the production lighting device 4 is a lighting device that has a relatively high frequency of color changes. For example, the lighting device 4 for production is used in a social space or the like.

  As shown in FIG. 2, the controller 1 transmits a lighting control signal including color information specifying the color of light to each of the normal lighting fixture 3 and the converter 2 in a predetermined cycle. The above-mentioned predetermined cycle is used in the communication standard for executing low speed communication.

  As shown in FIG. 2, when the converter 2 receives the lighting control signal from the controller 1, the converter 2 transmits a series of lighting effect signals to the lighting device 4 for effect. The series of lighting effect signals each include a set of color data transmitted in a specific cycle shorter than a predetermined cycle. The set of color data corresponds to the above-mentioned color information. The above-mentioned specific cycle is used in the communication standard for executing high-speed communication. The lighting device 4 for performance emits light according to a series of lighting performance signals received from the converter 2.

  As shown in FIG. 2, the lighting control signal is a signal transmitted from the controller 1 to each of the converter 2 and the normal lighting fixture 3 in a predetermined cycle. The illumination control signal includes a dimming signal including light brightness data, a toning signal including color information, and a fade time signal. In the present embodiment, the color information included in the illumination control signal is a color temperature value. However, the color information may be any information as long as it can identify the color of the light emitted by the normal lighting fixture 3 and the staging lighting fixture 4.

  As shown in FIG. 2, a series of lighting effect signals are triggered by the reception of the lighting control signal, and from the reception of the lighting control signal of the last time to the reception of the lighting control signal of this time, from the cycle of the lighting control signal. Is a signal transmitted from the converter 2 to the illuminating device 4 for performance in a shorter cycle. The lighting effect signal includes a dimming signal including light brightness data, a toning signal including color data, and a fade time signal. The lighting effect signal is a signal transmitted from the converter 2 to the lighting device 4 for effecting. In the present embodiment, the color data included in the lighting effect signal is an RGB value, but any value such as a CMYK value can be used as long as it can specify the color of the light emitted by the lighting device 4 for effecting. May be

  In general, if the change in color temperature of the lighting device for production 4 is small, for example, from 2000K to 3000K, the lighting device for production 4 largely deviates from the black body miracle during the color change. It does not emit color. However, as shown in FIG. 3, when changing the color of the light emitted by the lighting device 4 for effect, if the change of the color of the light is linearly interpolated by the converter 2, the change of the color of The color of the interpolated light may be a color largely deviated from the black body locus. In this case, the production lighting device 4 emits light of an unsightly color while the color of the light emitted by the production lighting device 4 changes. For example, if the color temperature greatly changes from 2500 ° C. to 6500 ° C., the color changes from orange to light reddish purple to yellow. Light reddish-purple is a color that feels uncomfortable when it occurs during the change from orange to yellow.

  The set of color data shown in FIG. 4 interpolates the color specified by the previous color information and the color specified by the current color information. As a result, the change in the color of the light emitted from the lighting device 4 for effect from the color specified by the previous color information to the color specified by the current color information becomes a change along the black body locus. The color information of the previous time and the color information of this time respectively specify the color of the light emitted by the lighting device 4 for production. As shown in FIG. 2, the previous color information is the color temperature value extracted from the previous illumination control signal, and the current color information is the color temperature value extracted from the current illumination control signal. is there.

  According to the converter 2 of the lighting system 100 of the present embodiment described above, it is possible to make the change in the color of the light emitted by the lighting device 4 for presentation look good. For example, when the color temperature value as the color information changes from 2500 ° C. to 6500 ° C., it changes from orange to yellow via light orange. This color change feels natural.

  The configuration of the data table DT (see FIG. 6) built in the converter 2 will be described with reference to FIG.

  The data table DT (see FIG. 6) of the present embodiment stores a group of color information (color temperature values) and a group of color data (RGB values) in a one-to-one relationship. The group of color data is a group of color data arranged so as to be transmitted every a specific period, for example, 0.025 seconds. Each of the RGB data forming the group of color data is data designating the type of color represented by the RGB color model. As shown in FIG. 4, the group of color data is a set of color data arranged so that the color change along the black body locus is realized.

  FIG. 5 shows a set of color data extracted from the group of color data stored in the data table DT. The set of color data shown in FIG. 5 interpolates the color specified by the previous color information and the color specified by the current color information. As a result, the change in the color of the light emitted from the lighting device 4 for effect from the color specified by the previous color information to the color specified by the current color information becomes a change along the black body locus.

  The internal configuration of the converter 2 will be described with reference to FIG.

  As shown in FIG. 6, the converter 2 includes a data table DT, a reception unit 21, a timer T, and a transmission unit 23. The data table DT corresponds to a group of color information (values of color temperature) and a group of color data (RGB values) corresponding to the values of the group of color information to configure a color change along a black body locus. I remember it in a relationship. Specifically, the data table DT stores a group of color data within a color temperature range of 2000K to 20000K in a mode that realizes a color change along a black body locus for every 1K. The color data is numerical data represented by DMX-RGB values. That is, the numerical data represented by the DMX-RGB values is created every 1K from 2000K to 20000K.

  The receiving unit 21 of the converter 2 receives the illumination control signal from the controller 1 and extracts color information, that is, the value of color temperature from the illumination control signal. The illumination control signal is a signal transmitted by the controller 1 at a predetermined cycle, for example, every one second. The determining unit 22 determines whether the receiving unit 21 has received the lighting control signal. The timer T measures time and transmits a time signal to the determination unit 22. The transmission unit 23 may determine that the determination unit 22 has received the lighting control signal. In this case, the transmission unit 23 produces a series of lighting effect signals every time the timer T measures a specific cycle shorter than the predetermined cycle, for example, 0.025 seconds, within the period of the predetermined cycle. To the lighting equipment 4 of FIG. Each of the series of lighting effect signals includes a set of color data extracted from a group of color data so as to interpolate the color specified by the previous color information and the color specified by the current color information. There is. The set of color data is a predetermined number of color data extracted from the group of color data stored in the data table DT based on the previous color information and the current color information.

  Specifically, the data table DT stores, for example, a group of color data respectively corresponding to a group of color temperatures of 2000K to 20000K. A set of color data from the color data corresponding to the color temperature (2500K) of the color specified by the previous color information to the color data corresponding to the color temperature (6500K) of the color specified by the current color information, It is extracted from the group of color data of the above-mentioned data table DT. For example, a set of 40 color data is extracted from the group of color data stored in the data table DT.

  The converter 2 transmits a set of color data extracted from this group of color data to the illuminating device 4 for rendering in the order along the black body miracle. As a result, the production lighting fixture 4 emits light so as to realize a color change along the black body locus.

  According to the converter 2 of the present embodiment, it is possible to realize the color change along the black body locus with a simple structure of the data table DT. However, instead of the data table DT that stores a group of color data, the converter 2 interpolates the previous color information and the current color information so as to realize the color change along the black body locus. May be stored. In this case, a set of color data is determined by calculation by substituting the previous color information and the current color information into the calculation formula.

  The dimming and toning process executed by the converter 2 will be described with reference to FIG. 7.

  The receiving unit 21 of the converter 2 receives the illumination control signal every predetermined period, in this embodiment, every one second. When receiving the illumination control signal, the receiving unit 21 extracts color information, that is, a color temperature value from the illumination control signal. Under this precondition, in step S1, the determination unit 22 determines whether or not the reception unit 21 has received the illumination control signal from the controller 1. If it is determined in step S1 that the receiving unit 21 has not received the illumination control signal, the determining unit 22 repeats the process of step S1. If it is determined in step S1 that the receiving unit 21 has received the lighting control signal, the determining unit 22 starts the timer T in step S2.

  Then, in step S3, it is determined whether or not 0.025 seconds has elapsed from the time when a specific cycle of 0.25 seconds shorter than the predetermined cycle has elapsed in the previous step S3. If it is determined in step S3 that the specific cycle has not elapsed, the determination unit 22 repeats the process of step S3. In step S3, it may be determined that the above-described specific cycle has elapsed. In this case, in step S4, the transmission unit 23 includes the color data (RGB value) corresponding to the k (= 1 to 40) th color information (color temperature value) of the set of color data. An illumination effect signal is transmitted to the illumination device 4 for effect. In step S5, the transmitting unit 23 increments k = k + 1, that is, k, which is counted by the internal counter, by 1. That is, in a specific cycle, that is, every time 0.025 seconds elapse, the transmission unit 23 transmits one effect illumination signal to the effect illumination device 4.

  Then, in step S6, the determination unit 22 determines whether k = 41, that is, whether the current color data is the last color data in the set of color data. If k = 41 is not satisfied in step S6, the determination unit 22 executes the process of step S3 again. If k = 41 in step S6, the determining unit 22 resets the illumination control signal received by the receiving unit 21, the time counted by the timer T, and the counted value of k in step S7, that is, The timer T is reset to zero, and the value of the counter k is reset to 1. Then, the processes of steps S1 to S7 are repeated.

  In the present embodiment, converter 2 is provided structurally separated from both controller 1 and lighting device 4 for performance. However, the converter 2 may be structurally integrated with the lighting fixture 4 for performance, or may be structurally integrated with the controller 1.

  The data table DT containing the group of color data for extracting the set of color data shown in FIG. 5 is incorporated in the converter 2 before the converter 2 is connected to the lighting system 100. Good. However, the converter 2 receives the above-mentioned data table DT from the operation terminal 5 of the lighting device 4 for presentation, a group of color data is transmitted to the controller 1, and the group of color data is received via the controller 1. Good. Thereby, the converter 2 forms the above-mentioned data table DT. Moreover, the converter 2 may form the above-described data table DT by directly receiving from the operation terminal 5 of the lighting device 4 for presentation. This allows the set of color data stored in the converter 2 to be set or changed after connecting the converter 2 to the lighting system 100.

  In the present embodiment, it is assumed that the converter 2 is retrofitted to the communication path between the lighting fixture 4 of the existing lighting system 100 and the controller 1. However, the converter 2 may be connected to the communication path between the lighting fixture 4 and the controller 1 when the lighting system 100 is newly installed.

  Hereinafter, characteristic configurations of the illumination system 100 and the converter 2 according to the embodiment and effects obtained by the configuration will be described.

  (A) The lighting system 100 includes a controller 1, a converter 2, and a lighting fixture 4. The controller 1 transmits an illumination control signal including color information that specifies the color of light at a predetermined cycle. When the converter 2 receives the illumination control signal from the controller 1, the converter 2 includes a series of color data corresponding to the color information at a specific cycle shorter than the predetermined cycle within a predetermined cycle period. The lighting effect signal of is transmitted. The lighting fixture 4 emits light according to a series of lighting effect signals received from the converter 2. The set of color data interpolates the color specified by the previous color information and the color specified by the current color information. As a result, the color change of the light emitted from the lighting device 4 from the color specified by the previous color information to the color specified by the current color information becomes the color change along the black body locus. According to this, the change in the color emitted by the lighting fixture 4 can be made to look good.

  (B) The converter 2 may include a data table DT, a reception unit 21, a timer T, a determination unit 22, and a transmission unit 23. The data table DT stores a group of color information and a group of color data respectively corresponding to the group of color information in a correspondence relationship that constitutes a color change along a black body locus. The receiving unit 21 receives the lighting control signal and extracts color information from the lighting control signal. The determining unit 22 determines whether the receiving unit 21 has received the lighting control signal. The timer T measures time. When the determination unit 22 determines that the illumination control signal has been received, the transmission unit 23 sequentially transmits a series of illumination effect signals each time the timer T measures a specific period within a period of a predetermined period. . The series of lighting effect signals each include a set of color data extracted from a group of color data so as to interpolate the color specified by the previous color information and the color specified by the current color information. According to this, it is possible to realize the color change along the black body locus with a simple configuration of the data table DT.

  (C) The converter 2 forms a data table DT by receiving a group of color data from the operation terminal 5 of the luminaire 4 via the controller 1 or directly from the operation terminal 5 of the luminaire 4. May be. This allows the group of color data to be changed after connecting the converter 2 to the lighting system 100.

  (D) The color information may be a color temperature value.

  (E) The color data may be RGB values.

DESCRIPTION OF SYMBOLS 1 controller 2 converter 4 lighting fixture 21 for performance 21 receiver 22 determination unit 23 transmitter 100 lighting system DT data table T timer

Claims (10)

A controller that transmits a lighting control signal including color information that specifies the color of light in a predetermined cycle,
When the lighting control signal is received from the controller, a series of a set of color data corresponding to the color information is provided within a period of the predetermined period at a specific period shorter than the predetermined period. A converter for transmitting a lighting effect signal, and a converter used in a lighting system comprising: a lighting fixture that emits light according to a series of lighting effect signals received from the converter,
The set of color data includes a color change of the light emitted by the lighting fixture from a color specified by the previous color information to a color specified by the current color information, which is a color along a black body locus. A converter that interpolates a color specified by the previous color information and a color specified by the current color information so as to change. A data table that stores a group of the color information and a group of color data respectively corresponding to the group of color information in a correspondence relationship that constitutes a color change along the black body locus;
A receiving unit that receives the lighting control signal and extracts the color information from the lighting control signal;
A determining unit that determines whether the receiving unit has received the lighting control signal,
A timer that keeps time
When the determination unit determines that the lighting control signal has been received, the transmission of sequentially transmitting the series of lighting effect signals each time the timer measures the specific cycle within the period of the predetermined cycle. Part and including,
The series of lighting effect signals, respectively, of the set of color data extracted from the group of color data so as to interpolate a color specified by the previous color information and a color specified by the current color information. The converter of claim 1 including color data.   The converter forms the data table by receiving the group of color data from an operation terminal of the luminaire via the controller or directly from the operation terminal of the luminaire. 2. The converter according to 2.   The converter according to claim 1, wherein the color information is a color temperature value.   The converter according to claim 1, wherein the color data is an RGB value. A controller that transmits a lighting control signal including color information that specifies the color of light in a predetermined cycle,
When the lighting control signal is received from the controller, a series of a set of color data corresponding to the color information is provided within a period of the predetermined period at a specific period shorter than the predetermined period. A converter that sends a lighting effect signal,
A lighting fixture that emits light according to a series of lighting effect signals received from the converter,
The set of color data includes a color change of the light emitted by the lighting fixture from a color specified by the previous color information to a color specified by the current color information, which is a color along a black body locus. An illumination system interpolating a color specified by the previous color information and a color specified by the current color information so as to change. The converter is
A data table that stores a group of the color information and a group of color data respectively corresponding to the group of color information in a correspondence relationship that constitutes a color change along the black body locus;
A receiving unit that receives the lighting control signal and extracts the color information from the lighting control signal;
A determining unit that determines whether the receiving unit has received the lighting control signal,
A timer that keeps time
When the determination unit determines that the lighting control signal has been received, the transmission of sequentially transmitting the series of lighting effect signals each time the timer measures the specific cycle within the period of the predetermined cycle. Part and including,
The series of lighting effect signals, respectively, of the set of color data extracted from the group of color data so as to interpolate a color specified by the previous color information and a color specified by the current color information. 7. The lighting system of claim 6, including color data.   The converter forms the data table by receiving the group of color data from an operation terminal of the luminaire via the controller or directly from the operation terminal of the luminaire. The illumination system according to 7.   The illumination system according to claim 6, wherein the color information is a value of color temperature. The illumination system according to claim 6, wherein the color data are RGB values.