JP2018125237A - Multiwavelength light source control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light source control system in a simple structure, capable of controlling a plurality of light sources in which a peak wavelength is different at high precisely.SOLUTION: A multiwavelength light source control system includes: a plurality of light source units (106a to 106c) on which a plurality of light sources alternately having a different peak wavelength is mounted; a control terminal (101) that transmits a lighting control signal that designate the light source that turns the light of the plurality of light sources having the different peak wavelength in each light source unit; a controller (102) that receives the lighting control signal, receives a supple of an AC power supply voltage through a first power supply code, divides a lighting control command and overlaps to an AC power supply voltage on the basis of the lighting control signal, and transmits to a second power supply code; and a plurality of power supply devices (104a to 104c) that receives the lighting control command, outputs a driving signal to the plurality of light source units in accordance with the lighting control command, and independently turns on the plurality of light source units.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a multi-wavelength light source control system, and more particularly to a multi-wavelength light source control system having a plurality of light source units.

  In the field of agriculture, technologies using artificial light have been used for a long time, such as electric cultivation in the production of chrysanthemum and supplementary light for suppressing deterioration in quality when sweet peas have bad weather.

  In recent years, the operation of plant factories has expanded as a production facility for leafy vegetables such as lettuce. Above all, in a fully-controlled plant factory that can carry out stable planned production throughout the year, the light to cultivate crops is controlled using an artificial light source. Thus, when an artificial light source is used in a plant factory, it is necessary to take measures such as suppressing the influence on the room temperature due to heat radiation from the light source and the increase in power cost. For this reason, it is important to improve productivity and produce high-quality vegetables with less light energy. Special light control technologies such as light irradiation in a specific wavelength range such as monochromatic light and pulse lighting are also used. ing.

  In addition to these, recently, artificial light aimed at controlling the productivity and ingredients of crops, such as promoting the growth of crops, increasing yields, and enhancing functional ingredients, by irradiating light with certain components. Research on usage is widely conducted.

  As a photoresponsive reaction of a plant, in general, light in a red region is considered to be particularly effective for photosynthesis, and light in a blue region is supposed to act on morphogenesis and photosynthesis. For this reason, as a light source device for plant cultivation, what emits red light, and what emits red light and blue light at a certain ratio are common.

  For example, Patent Document 1 is a three-dimensional multi-stage plant cultivation apparatus used in a plant factory, and its light source has one emission peak in a red wavelength region of 650 to 660 nm, and light energy in this red wavelength region. Is 20-30% of the total light energy.

  Patent Document 2 uses a fluorescent lamp and a light emitting diode in a red wavelength region of 650 to 660 nm as a light source to be arranged on a multistage cultivation bed for a plant factory, and the light quantity ratio between the light emitting diode and the fluorescent lamp is 1: It is characterized by being 3: 1: 4.

  Patent Document 3 is an illumination device for plant growth, which is a white light source for viewing and a red light having a peak wavelength for plant growth of 600 to 700 nm, or a red light and a peak wavelength of 430 to 490 nm. A light source of mixed light with blue light is provided.

  In addition, as light source devices for research, for example, those having three peak wavelengths of red, green, and blue have already been commercialized. It is equipped with light of three primary colors, red, green, and blue, and by adjusting the light intensity of each color and combining it, humans can realize light of all colors visually, In practice, there is no energy in the middle wavelength range of each peak wavelength. For example, let us consider a case where a certain experimental object is to be irradiated with light in the yellow wavelength range near 590 nm. By combining green light with a peak wavelength of 520 to 530 nm and red light with a peak wavelength of 650 to 660 nm, an apparently yellow emission color can be created, but the spectrum has energy in the green light region and the red light region. Since there is no energy in the vicinity of 590 nm, it is actually impossible to conduct an experiment of light irradiation in the yellow wavelength region.

  Patent Document 4 also includes three types of LEDs that emit red, green, and blue light. In addition, control signal communication is characterized by the power line carrier system, but it is shown as a general technique, and mentions a high-quality power line communication method that takes noise suppression into consideration. Absent.

JP 2008-245554 A JP 2008-118957 A JP 2007-323848 A JP 2010-157454 A

  As described above, since there is no effective light source device that has many wavelength regions that can emit light and can realize various light environments, the light source device is used when performing an experiment by light irradiation in a specific wavelength region. Special production is required.

  For example, assume that an experiment of supplementary light for sweet pea is performed. Here, when trying to test irradiation with mixed light of red light near the peak wavelength of 660 nm and near infrared light near the peak wavelength of 730 nm, there is no light source device that can emit light by setting such light conditions. A light source device for use in the test needs to be specially manufactured. Furthermore, when light irradiation with a different peak wavelength is attempted, there is a problem that a new light source device must be manufactured each time, and an efficient experiment cannot be performed.

  An object of the present invention is to provide a multi-wavelength light source control system that can control a plurality of light sources having different peak wavelengths with high accuracy and various condition settings with a simple configuration.

  The multi-wavelength light source control system of the present invention includes a plurality of light source units each equipped with a plurality of light sources having different peak wavelengths, and one or more of the light sources having different peak wavelengths for each light source unit. A control terminal for transmitting a lighting control signal designating a light source having a plurality of peak wavelengths, and receiving the lighting control signal, receiving an AC power supply voltage via a first power cord, and lighting based on the lighting control signal A controller that divides the control command and superimposes it on the AC power supply voltage and transmits it to the second power supply cord; and receives the lighting control command superimposed on the AC power supply voltage via the second power supply cord; In response to the lighting control command, by outputting a drive signal to each of the plurality of light source units, the light sources of the plurality of light source units are independent of each other. And having a plurality of power supplies for lighting.

  According to the present invention, it is possible to control a plurality of light sources having different peak wavelengths with high accuracy and various condition settings with a simple configuration.

It is a figure which shows the example of whole structure of the multiwavelength light source control system by 1st Embodiment. It is a figure which shows an example of a structure of the light source mounted in a light source unit. It is a figure which shows an example of a power line communication carrier wave and code | symbol data. It is a figure explaining the communication timing superimposed on AC power supply voltage. It is a timing chart explaining the procedure which controls a light source unit from a control terminal. It is a figure explaining the structural example of a controller. It is a figure explaining the structural example of a power supply device. It is a figure which shows the example of whole structure of the multiwavelength light source control system by 2nd Embodiment. It is a figure which shows an example of the light emission control condition setting by 2nd Embodiment.

(First embodiment)
FIG. 1 is a diagram showing a configuration example of a multi-wavelength light source control system 100 according to the first embodiment of the present invention. The multi-wavelength light source control system 100 includes a control terminal 101, a controller 102, an AC (alternating current) power cord 103, an AC power cord 105, a first power supply device 104a, a second power supply device 104b, and a third power supply device. Power supply device 104c, first unit connection cable 107a, second unit connection cable 107b, third unit connection cable 107c, first light source unit 106a, second light source unit 106b, 3 light source units 106c. The AC power cord 103 is a first power cord, and the AC power cord 105 is a second power cord.

  The control terminal 101 is a tablet terminal device, for example, and wirelessly transmits a control signal to the controller 102. The AC power cord 103 is connected to the controller 102 and supplies an AC power supply voltage to the controller 102 by being plugged into a commercial power outlet. The controller 102 receives the supply of the AC power supply voltage via the AC power supply cord 103 and supplies the AC power supply voltage to the three power supply devices 104 a to 104 c via the AC power supply cord 105. In addition, the controller 102 wirelessly receives a control signal from the control terminal 101 and transmits the control signal to the three power supply devices 104 a to 104 c via the AC power cord 105.

  The plurality of light source units 106a to 106c are each mounted with a plurality of light sources having different peak wavelengths. The first power supply device 104 a has, for example, the first unique identification ID (unique identifier), and supplies the plurality of light sources of the first light source unit 106 a according to the control signal received via the AC power cord 105. To control the power. The second power supply device 104b has, for example, a second unique identification ID, and controls power supplied to the plurality of light sources of the second light source unit 106b according to a control signal received via the AC power cord 105. To do. The third power supply device 104c has, for example, a third unique identification ID, and controls the power supplied to the plurality of light sources of the third light source unit 106c according to the control signal received via the AC power cord 105. To do. The plurality of power supply devices 104a to 104c are connected in parallel to the AC power cord 105 and have their own unique identification ID. The light source units 106a to 106c emit light according to the power control of the power supply devices 104a to 104c, respectively. The light source of the light source units 106a to 106c is, for example, an LED (light emitting diode), a laser diode, or an organic EL (electroluminescence).

  For example, the multi-wavelength light source control system 100 can irradiate a plant with light having a desired wavelength by the light source units 106a to 106c. Each of the light source units 106a to 106c can irradiate light of different peak wavelengths to plants in different test sections. The multi-wavelength light source control system 100 is used for research aimed at controlling the productivity and ingredients of crops by irradiating light of a specific peak wavelength, such as promoting the growth of crops, increasing yields, and enhancing functional ingredients. Can be used. The multi-wavelength light source control system 100 has a large number of wavelength ranges that can emit light, and can irradiate with light characteristics such as spectrum and lighting patterns set arbitrarily.

  The light conditions required in plant research using artificial light are not limited to the above spectrum problems. When conducting an experiment using light irradiation in a specific wavelength range, there is a problem that the state of the target plant becomes difficult to see depending on the color of the irradiated light. For this reason, the multi-wavelength light source control system 100 has a feature that it can irradiate not only a test emission wavelength but also illumination light close to natural light so that the state of the sample can be appropriately confirmed by human eyes.

  In addition, the multi-wavelength light source control system 100 has a pulse lighting function because it may be suitable for plant growth conditions in order to reduce the power cost or in some cases the pulse lighting is more suitable than the continuous lighting of the light source. The multi-wavelength light source control system 100 has a feature that, under the control of the control terminal 101, the pulse lighting cycle, the pulse width, and the like can be adjusted in order to verify the optimum conditions for pulse lighting.

  Thus, in the plant research, by using the multi-wavelength light source control system 100, what kind of peak wavelength light is combined and how it is irradiated with what lighting pattern affects the response response of the plant. Can be experimentally verified.

  Each of the light source units 106a to 106c includes a plurality of light sources having different peak wavelengths, and can flexibly adjust light characteristics such as spectrum and color rendering, and can also be turned on such as a pulse lighting period and a pulse width. The pattern can be controlled arbitrarily. Here, the plurality of light sources having different peak wavelengths mounted in each of the light source units 106a to 106c have different rated specifications such as voltage, current, and efficiency. For this reason, it is generally difficult to perform power supply control uniformly for all light sources, and the configuration and control system for controlling the light source units 106a to 106c are complicated. Therefore, the multi-wavelength light source control system 100 is provided with the controller 102 and the power supply devices 104a to 104c, so that a plurality of light source units 106a to 106c equipped with a large number of types of light sources having different rated specifications can be operated with complicated settings. The control can be performed with high accuracy only by connecting the AC power cord 105 without complicating the configuration. Details will be described below.

  FIG. 2 is a diagram for explaining a plurality of light sources mounted on the light source units 106a to 106c. Each of the light source units 106a to 106c includes a plurality of white LEDs, a plurality of UV (ultraviolet light or ultraviolet light) LEDs having a peak wavelength of 370 nm, a plurality of LEDs having a peak wavelength of 390 nm, and a peak wavelength of 410 nm. A plurality of purple LEDs, a plurality of blue LEDs having a peak wavelength of 450 nm, a plurality of blue LEDs having a peak wavelength of 460 nm, a plurality of green LEDs having a peak wavelength of 525 nm, and a yellow having a peak wavelength of 560 nm Green LEDs, yellow LEDs with a peak wavelength of 590 nm, orange LEDs with a peak wavelength of 605 nm, red LEDs with a peak wavelength of 624 nm, and red LEDs with a peak wavelength of 660 nm A plurality of LEDs, a plurality of red LEDs having a peak wavelength of 730 nm, and an IR (peak wavelength of 810 nm) A plurality of LED and the peak wavelength of the external or infrared light) having an LED chip and a plurality of LED of the IR of 940 nm. As described above, each of the light source units 106a to 106c has a total of 15 types of light source LEDs having different peak wavelengths in the ultraviolet light, visible light, and infrared light regions, and is appropriately viewed by the human eye. It also has a white LED for ensuring safety.

  Six channels CH1 to CH6 can be set in the light source units 106a to 106c, respectively. In the first light source unit 106a, for example, the first channel CH1 is set to a plurality of UV LEDs having a peak wavelength of 370 nm, and the second channel CH2 is set to a plurality of LEDs having a peak wavelength of 390 nm, The third channel CH3 is set to a plurality of purple LEDs having a peak wavelength of 410 nm, the fourth channel CH4 is set to a plurality of blue LEDs having a peak wavelength of 450 nm, and the fifth channel CH5 has a peak wavelength of 460 nm. The sixth channel CH6 is set to a plurality of green LEDs having a peak wavelength of 525 nm.

  In the second light source unit 106b, for example, the first channel CH1 is set to a plurality of white LEDs, the second channel CH2 is set to a plurality of blue LEDs having a peak wavelength of 460 nm, and the third channel CH3. Is set to a plurality of green LEDs with a peak wavelength of 525 nm, the fourth channel CH4 is set to a plurality of yellow-green LEDs with a peak wavelength of 560 nm, and the fifth channel CH5 is a plurality of yellow with a peak wavelength of 590 nm The sixth channel CH6 is set to a plurality of red LEDs having a peak wavelength of 660 nm.

  In the third light source unit 106c, for example, the first channel CH1 is set to a plurality of orange LEDs having a peak wavelength of 605 nm, and the second channel CH2 is set to a plurality of red LEDs having a peak wavelength of 624 nm, The third channel CH3 is set to a plurality of red LEDs having a peak wavelength of 660 nm, the fourth channel CH4 is set to a plurality of red LEDs having a peak wavelength of 730 nm, and the fifth channel CH5 has a peak wavelength of 810 nm. The sixth channel CH6 is set to a plurality of IR LEDs having a peak wavelength of 940 nm.

  For example, when the control terminal 101 wirelessly transmits a control signal indicating lighting of the first channel CH1 of the first light source unit 106a, the peak wavelength set for the first channel CH1 is 370 nm in the first light source unit 106a. A plurality of UV LEDs emit light.

  Further, when the control terminal 101 wirelessly transmits a control signal indicating lighting of the first channel CH1 of the second light source unit 106b, the second light source unit 106b transmits a plurality of white colors set to the first channel CH1. LED emits light.

  Further, when the control terminal 101 wirelessly transmits a control signal indicating lighting of the first channel CH1 of the third light source unit 106c, the peak wavelength set to the first channel CH1 is 605 nmn in the third light source unit 106c. A plurality of orange LEDs emit light.

  Each of the plurality of light source units 106a to 106c is equipped with light sources having different peak wavelengths of 6 channels CH1 to CH6 or more in the region of ultraviolet light, visible light, and near infrared light. Each of the plurality of power supply devices 104a to 104c controls lighting of the light source independently for each of the channels CH1 to CH6 of the plurality of light source units 106a to 106c.

  The light source units 106a to 106c are a light source that emits white light (for example, a white LED in which a phosphor is combined with a blue or purple LED) and a light source that emits white light by controlling lighting of the power supply devices 104a to 104c, respectively. In order to improve the color rendering properties, light with a color rendering property Ra = 90 to 100 close to natural light can be irradiated by lighting in combination with one or a plurality of light sources having different peak wavelengths with respect to a white light source. .

  Note that the light source units 106a to 106c may be mounted with light sources having more types and different specifications. Further, the number of light source units 106a to 106c is not limited to three, and more light source units with different combinations of light emitting light sources may be provided to increase the types of light sources that can be controlled to emit light.

  FIG. 3A is a diagram illustrating an example of a power line communication carrier wave and code data that the controller 102 transmits to the power supply apparatuses 104 a to 104 c via the AC power cord 105. The carrier wave and the modulation method of the controller 102 are, for example, the FSK (400 KHz / 444 KHz) NRZI method. The transmission of the controller 102 is performed by FSK modulation. The FSK frequency uses two frequencies of 400 kHz and 444 kHz.

  Next, code data will be described. 16 waves of 400 kHz or 444 kHz are 1 bit (1 etu (element time unit)). One bit of 16 waves of 400 kHz is 40 μs. One bit of 16 waves of 444 kHz is 36 μs. The bit rate is about 25 kbps. When the frequency changes between the preceding and succeeding 1 bits (1 etu), the data is “1”. For example, the data is “1” when transitioning from a 400 kHz bit to a 444 kHz bit, and the data is also “1” when transitioning from a 444 kHz bit to a 400 kHz bit. When the frequency does not change between the preceding and succeeding 1 bits (1 etu), the data is “0”. For example, the data is “0” when transitioning from a 400 kHz bit to 400 kHz, and the data is also “0” when transitioning from a 444 kHz bit to a 444 kHz bit. The frame format has 1 start bit, 8 bits data, 1 bit even parity, and 1 stop bit.

  FIG. 3B is a diagram illustrating an example of a power line communication carrier wave and code data that the power supply apparatuses 104 a to 104 c transmit to the controller 102 via the AC power cord 105. The modulation method is, for example, ASK modulation. The frequency of the carrier wave is 422 kHz (center frequencies of 444 kHz and 400 kHz, which are the above FSK frequencies), and the encoding method is NRZ (1 is a carrier wave, 0 is a carrier wave). 16 waves of 422 kHz are 1 bit (1 etu). One etu having a carrier wave of 422 kHz has data “1”. The no-signal 1 etu with no carrier wave has data “0”.

  4A corresponds to FIG. 3A and shows a waveform of the AC power supply voltage 401 of the AC power supply cord 105 when the controller 102 transmits to the power supply devices 104a to 104c via the AC power supply cord 105. FIG. It is. The AC power supply voltage 401 has a zero cross point 403 at which the AC power supply voltage 401 is 0V. Within one cycle of the AC power supply voltage 401, there are two zero cross points 403. The controller 102 transmits the code data of the control signal superimposed on the AC power supply voltage 401 with the vicinity of the zero cross point 403 as the communication section 402. The communication section 402 has a length that is 1/5 or less of the cycle of the AC power supply voltage 401, and is preferably 1/10 or less of the cycle of the AC power supply voltage 401.

  FIG. 4B is an enlarged view of the zero cross point 403 of the AC power supply voltage 401 of FIG. The controller 102 transmits the transmission data 404 superimposed on the AC power supply voltage 401 near the zero cross point 403 of the AC power supply voltage 401. Transmission data 404 is code data of FSK modulation having carrier waves of 400 kHz and 444 kHz in FIG.

  As described above, transmission from the controller 102 to the power supply devices 104 a to 104 c is performed near the zero cross point 403. The zero cross point 403 refers to a point at which the AC power supply voltage 401 becomes 0V. Each of the power supply devices 104a to 104c includes a rectifier circuit and a switch for converting an AC voltage into a DC voltage, and various noises are generated by the operation of the rectifier circuit, the ON / OFF operation of the switch, the load fluctuation, and the like. In particular, noise is likely to occur near the peak of the AC power supply voltage 401, and this noise causes a communication failure. Therefore, the controller 102 performs transmission near the zero-cross point 403 in order to avoid the influence of noise near the peak of the AC power supply voltage 401. The communication section 402 is 2 milliseconds before and after the zero cross point 403.

  FIG. 5 is a flowchart showing a control method of the multi-wavelength light source control system 100. First, in step S501, the control terminal 101 wirelessly transmits a lighting control command to the controller 102 in response to an operation instruction on the touch screen on the screen by the user. The lighting control command includes a unique identification ID indicating one of the power supply devices 104a to 104c corresponding to each of the light source units 106a to 106c, and information on the pulse lighting cycle and pulse width of each channel. For example, the unique identification ID of the power supply device 104a corresponding to the first light source unit 106a is No. 1, the unique identification ID of the power supply device 104b corresponding to the second light source unit 106b is No. 2, and the third light source The unique identification ID of the power supply device 104c corresponding to the unit 106c is No. 3. The control terminal 101 transmits, for each of the light source units 106a to 106c, a lighting control command (lighting control signal) designating one or a plurality of light sources having peak wavelengths to be turned on among a plurality of light sources having different peak wavelengths.

  Next, in step S502, when the controller 102 wirelessly receives the lighting control command from the control terminal 101, the controller 102 supplies an ID designation command for designating a unique identification ID and participating in communication via the AC power cord 105. It transmits to 104a-104c. The ID designation command includes the same unique identification ID as the unique identification ID in the lighting control command received from the control terminal 101. This transmission is the transmission of the FSK modulation shown in FIGS. 3A, 4A, and 4B.

  In step S <b> 503, each of the power supply devices 104 a to 104 c receives an ID designation command from the controller 102. Then, each of the power supply devices 104a to 104c performs an ID designation command / response process according to the ID designation command when the received ID designation command includes its own unique identification ID, Response data indicating reception is transmitted to the controller 102. When the ID designation command includes the first unique identification ID, the first power supply device 104 a transmits response data to the controller 102. When the ID designation command includes the second unique identification ID, the second power supply device 104 b transmits response data to the controller 102. When the ID designation command includes the third unique identification ID, the third power supply device 104 c transmits response data to the controller 102. This transmission is the transmission of the ASK modulation shown in FIG.

  Next, in step S504, when the controller 102 receives the response data from any of the power supply devices 104a to 104c, the power supply devices 104a to 104 are connected via the AC power cord 105 according to the lighting control command received from the control terminal 101. A dimming command is transmitted to 104c. This dimming command includes the same information as the lighting control command received from the control terminal 101. This transmission is the transmission of the FSK modulation shown in FIGS. 3A, 4A, and 4B. The controller 102 divides the dimming command (lighting control command) based on the lighting control command (lighting control signal) and superimposes it on the communication section 402 of the AC power supply voltage 401 and transmits it to the AC power cord 105.

  In step S <b> 505, each of the power supply apparatuses 104 a to 104 c receives a dimming command from the controller 102 via the AC power cord 105. Then, each of the power supply devices 104a to 104c performs a dimming command / response process in accordance with the dimming command when the received dimming command includes its own unique identification ID. Response data indicating reception is transmitted to the controller 102. This transmission is the transmission of the ASK modulation shown in FIG.

  Further, each of the power supply devices 104a to 104c, when the received dimming command includes its own unique identification ID, with respect to the light source of each channel of the light source unit 106a to 106c corresponding to itself. A voltage of a pulse lighting period and a pulse width of each channel indicated by the dimming command is supplied. When the dimming command includes the first unique identification ID, the first power supply device 104a applies the period and pulse width corresponding to the dimming command to the light source of each channel of the first light source unit 106a. Supply a voltage of. Further, when the dimming command includes the second unique identification ID, the second power supply device 104b applies the period corresponding to the dimming command to the light source of each channel of the second light source unit 106b. Supply voltage with pulse width. When the dimming command includes the third unique identification ID, the third power supply device 104c applies the period corresponding to the dimming command to the light source of each channel of the third light source unit 106c. Supply voltage with pulse width.

  Each of the plurality of power supply devices 104 a to 104 c receives the dimming command when the unique identification ID included in the dimming command received from the AC power cord 105 matches the own unique identification ID. When the unique identification ID included in the received dimming command does not match the own unique identification ID, the dimming command is not accepted. The plurality of power supply devices 104a to 104c output drive signals to the plurality of light source units 106a to 106c, respectively, according to the dimming command.

  In step S506, the light source units 106a to 106c independently turn on the light sources of the respective channels in accordance with the voltage pulses (pulse drive signals) supplied from the power supply devices 104a to 104c. The pulse period and pulse width can be varied for each channel. Further, by setting the pulse width to 0, the light source of a specific channel can be turned off. In addition, by making the pulse width and the pulse period the same, the light source of a specific channel can be always turned on.

  In step S507, when the controller 102 receives response data from any of the power supply devices 104a to 104c, the controller 102 displays a lighting process result indicating that any of the power supply devices 104a to 104c has received the dimming command normally. Wirelessly transmit to.

  By performing the above processing, the control terminal 101 can perform lighting control on each of the light source units 106a to 106c.

  FIG. 6 is a diagram illustrating a configuration example of the controller 102. The controller 102 includes a power supply circuit 601, a filter circuit 602, a zero-cross detection circuit 603, a coupler 604, an I / F (interface) circuit 605, a control circuit 606, a transmission circuit 607, a reception circuit 608, and a fuse 609. And a varistor 610.

  The filter circuit 602 is a first filter circuit, and an AC power supply voltage is input from the AC power supply cord 103 via the fuse 609 and the varistor 610, noise of the AC power supply voltage is removed, and the AC from which the noise has been removed. The power supply voltage is output to the zero cross detection circuit 603.

  The zero cross detection circuit 603 detects the zero cross point 403 of the AC power supply voltage 401 output from the filter circuit 602, generates a 2 msec pulse signal before and after the zero cross point 403, and outputs the 2 msec pulse signal to the control circuit 606. To do. This pulse signal indicates the communication section 402 in FIG.

  The power supply circuit 601 receives an AC power supply voltage from the AC power cord 103 via the fuse 609 and the varistor 610, converts the AC power supply voltage into a DC power supply voltage, and converts the DC power supply voltage to the I / F circuit 605 and the control. The data is supplied to the circuit 606, the transmission circuit 607, and the reception circuit 608.

  The I / F circuit 605 wirelessly receives the lighting control command and wirelessly transmits the lighting processing result to the control terminal 101. The control circuit 606 interprets the lighting control command received by the I / F circuit 605 and instructs the transmission circuit 607 to transmit the ID designation command in the communication section 402 indicated by the pulse signal from the zero cross detection circuit 603. The transmission circuit 607 performs 400 kHz and 444 kHz FSK modulation on the ID designation command, and transmits the modulated ID designation command to the combiner 604. The coupler 604 superimposes the ID designation command transmitted from the transmission circuit 607 on the AC power supply voltage output from the filter circuit 602 and outputs the superimposed command to the AC power supply code 105.

  The receiving circuit 608 enters a reception waiting state for response data corresponding to the ID designation command. The coupler 604 extracts response data from the AC power supply voltage in the AC power cord 105 and outputs the response data to the receiving circuit 608. The reception circuit 608 receives the response data, demodulates the received response data, and outputs it to the control circuit 606.

  Then, in response to the lighting control command received by the I / F circuit 605, the control circuit 606 divides the dimming command into the communication section 402 indicated by the pulse signal from the zero cross detection circuit 603 and transmits it to the transmission circuit 607. Instruct. The transmission circuit 607 performs 400 kHz and 444 kHz FSK modulation on the dimming command, and transmits the modulated dimming command to the coupler 604. The coupler 604 superimposes the dimming command transmitted by the transmission circuit 607 on the AC power supply voltage output by the filter circuit 602 and outputs the superimposed light control command to the AC power cord 105. Specifically, the combiner 604 is a first combiner, and the above-described division into the AC power supply voltage output by the filter circuit 602 at the timing near the plurality of zero cross points 403 detected by the zero cross detection circuit 603. Each of the dimming commands is superimposed.

  The receiving circuit 608 enters a standby state for receiving response data corresponding to the dimming command. The coupler 604 extracts response data from the AC power supply voltage in the AC power cord 105 and outputs the response data to the receiving circuit 608. The reception circuit 608 receives the response data, demodulates the received response data, and outputs it to the control circuit 606. Then, the control circuit 606 wirelessly transmits the lighting process result to the control terminal 101 via the I / F circuit 605.

  FIG. 7 is a diagram illustrating a configuration example of the first power supply device 104a. Since the second power supply device 104b and the third power supply device 104c have the same configuration as the first power supply device 104a, the configuration of the first power supply device 104a will be described below as an example. The first power supply device 104a includes a control power supply circuit 701, a microcomputer 702, a filter circuit 703, a dimming driver 704, a dimming driver 705, a dimming control circuit 706, a transmitting circuit 707, and a receiving circuit. 708, sensor I / F circuit 709, connection terminal 710, fuse 711, varistor 712, and coupler 713. A sensor circuit 714 can be connected to the connection terminal 710 of the first power supply device 104a. The sensor circuit 714 is a pyroelectric sensor circuit that detects light, a temperature sensor circuit that detects temperature, and / or a humidity sensor circuit that detects humidity.

  The control power supply circuit 701 receives an AC power supply voltage from the AC power supply cord 105 through the fuse 711 and the varistor 712, converts the AC power supply voltage into a DC power supply voltage, and converts the DC power supply voltage into the microcomputer 702 and the filter circuit. 703, a dimming control circuit 706, a transmission circuit 707, a reception circuit 708, and a sensor I / F circuit 709. The filter circuit 703 is a second filter circuit, removes a ripple component of the DC power supply voltage output from the control power supply circuit 701, and outputs it to the dimming drivers 704 and 705.

  The coupler 713 extracts an ID designation command from the AC power supply voltage in the AC power supply cord 105 and outputs it to the reception circuit 708. The receiving circuit 708 receives the ID designation command, demodulates the received ID designation command, and outputs it to the microcomputer 702.

  Then, the microcomputer 702 instructs the transmission circuit 707 to transmit response data corresponding to the ID designation command. The transmission circuit 707 performs ASK modulation on the response data, and transmits the modulated response data to the combiner 713. The coupler 713 superimposes the response data transmitted by the transmission circuit 707 on the AC power supply voltage in the AC power supply cord 105 and outputs it to the AC power supply cord 105.

  The receiving circuit 708 enters a dimming command reception standby state. The coupler 713 extracts a dimming command from the AC power supply voltage in the AC power cord 105 and outputs the dimming command to the receiving circuit 708. The receiving circuit 708 receives the dimming command, demodulates the received dimming command, and outputs it to the microcomputer 702.

  Then, the microcomputer 702 instructs the transmission circuit 707 to transmit response data corresponding to the dimming command. The transmission circuit 707 performs ASK modulation on the response data, and transmits the modulated response data to the combiner 713. The coupler 713 superimposes the response data transmitted by the transmission circuit 707 on the AC power supply voltage in the AC power supply cord 105 and outputs it to the AC power supply cord 105.

  The microcomputer 702 interprets the dimming command and outputs a control signal corresponding to the dimming command to the dimming control circuit 706. Then, the dimming control circuit 706 outputs a control signal corresponding to the dimming command to the dimming drivers 704 and 705. Then, the dimming drivers 704 and 705 receive the supply of the DC power supply voltage from the filter circuit 703, and send the drive signal of each channel for pulse lighting or constant lighting according to the dimming command to the first unit connection cable 107a. To the first light source unit 106a. The first light source unit 106a inputs a drive signal for each channel, and performs pulse lighting or constant lighting of the light source for each channel.

  Note that the first power supply device 104 a can receive a sensor command from the control terminal 101 via the controller 102. In that case, the microcomputer 702 inputs sensor information such as light, temperature, or humidity detected by the sensor circuit 714 via the sensor I / F circuit 709. The transmission circuit 707 transmits sensor information to the control terminal 101 via the controller 102 under the control of the microcomputer 702. The control terminal 101 can display the sensor information.

(Second Embodiment)
FIG. 8 is a diagram illustrating a configuration example of the multi-wavelength light source control system 100 according to the second embodiment of the present invention. The present embodiment shows an example in which the multi-wavelength light source control system 100 is used for an experiment for investigating how different kinds of light irradiation affect the mushroom character generated. The basic configuration of this embodiment is the same as that of the first embodiment. Hereinafter, the points of the present embodiment different from the first embodiment will be described.

  The multi-wavelength light source control system 100 includes a control terminal 101, a controller 102, an AC power cord 103, an AC power cord 105, six power supply devices 104a to 104f, six unit connection cables 107a to 107f, 6 light source units 106a to 106f.

  The mushroom generation box 801 is provided with first to seventh test zones and a control zone. The first test section is covered with the first light shielding sheet 802a, and the first light source unit 106a irradiates the first fungus bed 803a with light. The second test section is covered with the second light shielding sheet 802b, and the second light source unit 106b irradiates the second fungus bed 803b with light. Similarly, the third to sixth test sections are respectively covered with the third to sixth light shielding sheets 802c to 802f, and the third to sixth light source units 106c to 106f are provided to the third to sixth fungus beds. Light is irradiated to 803c to 803f. The seventh test section is covered with a seventh light shielding sheet 802g, and is placed in a state where the seventh fungus bed 803g is shielded from light without a light source unit. In the control group, the eighth fungus bed 803h is placed without the light shielding sheet and the light source unit.

  The mushroom generation store | warehouse | chamber 801 is a store | warehouse | chambering which grows a mushroom, and provides the 1st-7th test section divided with seven light-shielding sheets 802a-802g. The light source units 106a to 106f have light sources of 6 channels CH1 to CH6, respectively, and are mounted with LED light sources having different peak wavelengths. In the first to sixth test sections, the first to sixth light source units 106a to 106f set so as to be lit at mutually different peak wavelengths are attached. In the seventh test section, a light source unit is not attached and a dark environment is set. Outside the first to seventh test zones, a control zone for the light environment of the conventional cultivation style by lighting the interior lamp (fluorescent lamp) of the mushroom generation warehouse 801 is provided. In these seven test plots and one control plot, fungus beds 803a to 803h in which mushroom inoculums are cultured are arranged, and at the same time, the fungus beds 803a to 803h are cultivated, and the fungus beds 803a to 803h are generated. By evaluating mushrooms, it is possible to verify how the light environment of different peak wavelengths affects the yield and traits of mushrooms.

FIG. 9 is a diagram showing an example of setting the control conditions of the light environment in the first to seventh test groups and the control group in this experiment. The first to sixth light source units 106a to 106f are light source units in the first to sixth test sections, respectively, and are lit with different emission colors. The first to sixth light source units 106a to 106f are adjusted to such an intensity that the photon flux density on the surface of the fungus bed 803a to 803f is about 10 μmol / m ² / s. The first to sixth light source units 106a to 106f are set so as to be lit in a pulse from 6 o'clock to 18 o'clock every day with a pulse drive signal having a duty ratio of 0.5.

The control terminal 101 sets a UV LED light source having a peak wavelength of 370 nm as a lighting light source for the first light source unit 106a in the first test section according to a user's operation instruction on the touch screen, and the photon flux density (Light intensity) is set to 10 μmol / m ² / s, the pulse lighting duty ratio is set to 0.5, the lighting time is set to 6 o'clock, and the extinguishing time is set to 18:00. Then, the control terminal 101 transmits the set information to the first power supply device 104a via the controller 102. The first power supply device 104a turns on the light source of the first light source unit 106a according to the set information.

The control terminal 101 sets a blue LED light source having a peak wavelength of 450 nm as a lighting light source for the second light source unit 106b in the second test section in accordance with a user's operation instruction on the touch screen. (Light intensity) is set to 10 μmol / m ² / s, the pulse lighting duty ratio is set to 0.5, the lighting time is set to 6 o'clock, and the extinguishing time is set to 18:00. Then, the control terminal 101 transmits the set information to the second power supply device 104b via the controller 102. The second power supply device 104b turns on the light source of the second light source unit 106b according to the set information.

The control terminal 101 sets a green LED light source having a peak wavelength of 525 nm as a lighting light source for the third light source unit 106c in the third test section according to a user's touch screen operation instruction, and the photon flux density (Light intensity) is set to 10 μmol / m ² / s, the pulse lighting duty ratio is set to 0.5, the lighting time is set to 6 o'clock, and the extinguishing time is set to 18:00. Then, the control terminal 101 transmits the set information to the third power supply device 104c via the controller 102. The third power supply device 104c turns on the light source of the third light source unit 106c according to the set information.

The control terminal 101 sets a yellow LED light source having a peak wavelength of 590 nm as a lighting light source for the fourth light source unit 106d in the fourth test section according to a user's operation instruction on the touch screen, and the photon flux density (Light intensity) is set to 10 μmol / m ² / s, the pulse lighting duty ratio is set to 0.5, the lighting time is set to 6 o'clock, and the extinguishing time is set to 18:00. Then, the control terminal 101 transmits the set information to the fourth power supply device 104d via the controller 102. The fourth power supply device 104d turns on the light source of the fourth light source unit 106d according to the set information.

The control terminal 101 sets a red LED light source having a peak wavelength of 660 nm as a lighting light source for the fifth light source unit 106e in the fifth test section according to a user's operation instruction on the touch screen, and the photon flux density (Light intensity) is set to 10 μmol / m ² / s, the pulse lighting duty ratio is set to 0.5, the lighting time is set to 6 o'clock, and the extinguishing time is set to 18:00. Then, the control terminal 101 transmits the set information to the fifth power supply device 104e via the controller 102. The fifth power supply device 104e turns on the light source of the fifth light source unit 106e according to the set information.

The control terminal 101 sets an IR LED light source having a peak wavelength of 730 nm as a lighting light source for the sixth light source unit 106f in the sixth test section according to a user's operation instruction on the touch screen, and the photon flux density (Light intensity) is set to 10 μmol / m ² / s, the pulse lighting duty ratio is set to 0.5, the lighting time is set to 6 o'clock, and the extinguishing time is set to 18:00. Then, the control terminal 101 transmits the set information to the sixth power supply device 104f via the controller 102. The sixth power supply device 104f turns on the light source of the sixth light source unit 106f according to the set information.

  As described above, the control terminal 101 sets, for each of the light source units 106a to 106f, the light intensity, the duty ratio, the turn-on time, and the turn-off time for pulse-lighting the light sources of the light source units 106a to 106f, and the zero-cross detection circuit 603. The lighting control command corresponding to the setting is transmitted in synchronization with the timing in the vicinity of the zero cross point 403 detected by. The power supply devices 104a to 104f receive the lighting control command and output a pulse drive signal having the above-described duty ratio. The plurality of light source units 106a to 106f are synchronized with the timing in the vicinity of the zero cross point 403 detected by the zero cross detection circuit 603, and the light intensity, duty ratio, lighting time and extinguishing time set for each light source unit 106a to 106f. Perform pulse lighting according to As a result, the zero-cross point 403 can be maintained in a state with less noise, and the risk of communication errors can be reduced.

The seventh test section has no light source unit and is shielded from light. In the control group, a fluorescent lamp with a photon flux density (light intensity) of 10 μmol / m ² / s lights from 6 o'clock to 18 o'clock.

  As described above, the first to sixth light source units 106a to 106f irradiate the first to sixth fungus beds 803a to 803f with light having different peak wavelengths, respectively. By evaluating mushrooms generated in the first to eighth fungal beds 803a to 803h, it is possible to verify how the light environment of different peak wavelengths affects the yield and traits of mushrooms.

  According to the first and second embodiments, the multi-wavelength light source control system 100 can transmit ultraviolet light, visible light, and near-infrared light by power line communication via the AC power cord 105 without complicating the configuration. Light emission control of a plurality of light source units 106a to 106f equipped with a number of light sources having different peak wavelengths in the region can be performed. At that time, the multi-wavelength light source control system 100 can specify the light source units 106a to 106f and the channels CH1 to CH6 independently and control them with high accuracy.

  In addition, since the multi-wavelength light source control system 100 can drive a large number of power supply devices 104a to 104f connected by an AC power cord 105, the light source units 106a to 106f with different types of light sources to be mounted are combined to emit light. It can be controlled, can set an arbitrary spectrum, color rendering property and lighting pattern with a high degree of freedom, and can provide various light environments.

  The controller 102 transmits a dimming command including information on the pulse lighting cycle and the duty ratio to the power supply devices 104a to 104f. Each of the power supply apparatuses 104a to 104f includes dimming drivers 704 and 705 that generate pulse drive signals. The dimming drivers 704 and 705 are pulse generators, and generate pulse drive signals according to the pulse lighting cycle and duty ratio received from the controller 102. The light source units 106a to 106f are pulse-lit at a period and a duty ratio corresponding to the pulse drive signals generated by the power supply devices 104a to 104f, respectively. Since the power supply devices 104a to 104f receive the dimming command in the communication section 402 synchronized with the zero cross point 403 of the AC power supply voltage 401, they can generate pulse drive signals synchronized with each other. Thereby, the some light source units 106a-106f can perform the pulse lighting synchronized mutually. Further, since the controller 102 performs communication in the communication section 402 in the vicinity of the two zero cross points 403 existing within one cycle of the AC power supply voltage 401, the AC power cord 103 may be plugged into the outlet in a different direction. In synchronization with the timing of the zero cross point 403 that is twice in the cycle of the AC power supply voltage 401, the pulse lighting synchronization of the plurality of light source units 106a to 106f is not lost.

  Since the multi-wavelength light source control system 100 can provide various light environments, it can be expected to be widely used as a light source for plant research using artificial light or an evaluation light source in an artificial light type plant factory. In addition to applications for these plants, they can also be used in various fields such as industry and healthcare, such as experiments on photocatalysts using ultraviolet light and research on biological measurements using near-infrared light. Yes, the industrial applicability is high.

  The above-described embodiments are merely examples of implementation in carrying out the present invention, and the technical scope of the present invention should not be construed in a limited manner. That is, the present invention can be implemented in various forms without departing from the technical idea or the main features thereof.

DESCRIPTION OF SYMBOLS 101 Control terminal 102 Controller 103 AC power cord 104a-104f Power supply device 105 AC power cord 106a-106f Light source unit 107a-107f Unit connection cable

Claims (8)

A plurality of light source units each equipped with a plurality of light sources having different peak wavelengths,
For each light source unit, a control terminal that transmits a lighting control signal designating one or a plurality of peak wavelength light sources to be lit among a plurality of light sources having different peak wavelengths;
The lighting control signal is received, supplied with an AC power supply voltage via a first power cord, a lighting control command based on the lighting control signal is divided and superimposed on the AC power supply voltage to generate a second power cord A controller to send to
By receiving the lighting control command superimposed on the AC power supply voltage via the second power cord and outputting a drive signal to each of the plurality of light source units according to the lighting control command, A multi-wavelength light source control system comprising: a plurality of power supply devices that individually turn on the light sources of the light source unit. The controller is
A first filter circuit for removing noise of the AC power supply voltage supplied via the first power cord;
A zero cross detection circuit for detecting a zero cross point of the AC power supply voltage;
A first coupler that superimposes the divided lighting control commands on the AC power supply voltage output by the first filter circuit at a timing near a plurality of zero cross points detected by the zero cross detection circuit. The multi-wavelength light source control system according to claim 1. Each of the plurality of light source units is equipped with light sources having different peak wavelengths of 6 channels or more in the region of ultraviolet light, visible light, and near infrared light,
3. The multi-wavelength light source control system according to claim 1, wherein each of the plurality of power supply devices controls lighting of the light source independently for each channel of the plurality of light source units. The plurality of power supply devices are connected in parallel to the second power cord, each having its own unique identifier,
The controller transmits the lighting control command including the unique identifier to the second power cord;
Each of the plurality of power supply devices accepts the lighting control command when the unique identifier included in the lighting control command transmitted to the second power cord matches its own unique identifier, and 4. The lighting control command is not accepted when the unique identifier included in the lighting control command transmitted to the power cord is not identical to its own unique identifier. 5. The multi-wavelength light source control system described in 1. The control terminal sets, for each light source unit, a light intensity, a duty ratio, a turn-on time and a turn-off time for pulse-lighting the light source of the light source unit, and transmits the turn-on control signal according to the setting,
5. The light source unit according to claim 1, wherein the plurality of light source units perform pulse lighting according to a light intensity, a duty ratio, a lighting time, and a lighting time set for each of the light source units. Multi-wavelength light source control system.   The light source unit includes a light source that emits white light by controlling lighting of the power supply device, and one or a plurality of peak wavelengths different from those of the white light source in order to improve the color rendering of the white light source. 6. The multi-wavelength light source control system according to claim 1, wherein the multi-wavelength light source control system according to claim 1, which emits light having a color rendering property Ra = 90 to 100 that is close to natural light by being turned on in combination with a light source.   The light source of the light source unit includes at least one of an LED (light emitting diode), a laser diode, and an organic EL (electroluminescence), according to any one of claims 1 to 6. Wavelength light source control system. The control terminal sets a duty ratio for pulse-lighting the light source of the light source unit for each light source unit, and is set in synchronization with a timing near a zero cross point detected by the zero cross detection circuit. Transmitting the lighting control signal according to the duty ratio,
The power supply device receives the lighting control signal, outputs a pulse drive signal of the duty ratio,
The multi-wavelength light source control system according to claim 2, wherein the light source unit performs pulse lighting of the duty ratio in synchronization with a timing near a zero cross point detected by the zero cross detection circuit.

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