JP6884340B2 - Multi-wavelength light source control system - Google Patents

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, techniques using artificial light have long been used, such as electric lighting cultivation in the production of chrysanthemums and supplementary light to suppress quality deterioration of sweet pea in bad weather.

In recent years, the operation of plant factories has been expanding as a production facility for leafy vegetables such as lettuce. Above all, in a fully controlled plant factory where stable planned production can be performed throughout the year, the environment is controlled by using an artificial light source to irradiate the cultivated crops with light. When an artificial light source is used in a plant factory in this way, it is necessary to take measures such as suppressing the influence of heat radiation from the light source on the room temperature and the increase in power cost. Therefore, it is important to efficiently increase productivity and produce high-quality vegetables with a small amount of light energy, so 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 components of agricultural crops, such as promoting the growth of crops, increasing yields, and enhancing functional components, by irradiating light with a specific component. Research on its use is widespread.

As for the light response reaction of plants, it is generally said that light in the red region is particularly effective for photosynthesis, and that light in the blue region acts on morphogenesis and photosynthesis. For this reason, as a light source device for plant cultivation, one that emits red light or one that emits red light and blue light at a certain ratio is 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 the red wavelength region of 650 to 660 nm, and the light energy in this red wavelength region. Is characterized by 20 to 30% of the total light energy.

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

Patent Document 3 is a lighting device for growing plants, which is a light source of white light for viewing and red light having a peak wavelength of 600 to 700 nm for growing plants, or red light and a peak wavelength of 430 to 490 nm. It is equipped with a light source of mixed light with blue light.

In addition, as a light source device for research, for example, one having three peak wavelengths of red, green, and blue has already been commercialized. It has three primary colors of light, red, green, and blue, and by adjusting and synthesizing the light intensity of each color, it is possible to realize light of all colors visually by humans. In reality, there is no energy in the middle wavelength range of each peak wavelength. For example, consider a case where an experimental object is to be irradiated with light in the yellow wavelength region near 590 nm. Although it is possible to produce an apparently yellow emission color by synthesizing green light with a peak wavelength of 520 to 530 nm and red light with a peak wavelength of 650 to 660 nm, 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 not possible to actually carry out an experiment of light irradiation in the yellow wavelength region.

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

Japanese Unexamined Patent Publication No. 2008-245554 Japanese Unexamined Patent Publication No. 2008-118957 Japanese Unexamined Patent Publication No. 2007-323848 Japanese Unexamined Patent Publication No. 2010-157454

As described above, since there is no effective light source device that has many wavelength ranges that can emit light and can realize various light environments, when conducting an experiment by irradiating light in a specific wavelength range, the light source device is used. It is necessary to make it specially.

For example, suppose you want to perform a supplementary light experiment on sweet pea. Here, when attempting to test irradiation with mixed light of red light having a peak wavelength of 660 nm and near-infrared light having a peak wavelength of 730 nm, there is no light source device capable of emitting light by setting such light conditions. It is necessary to specially manufacture a light source device for use in the test. Further, every time an attempt is made to irradiate light with a different peak wavelength, it is necessary to manufacture a new light source device, and there is a problem that an efficient experiment cannot be carried out.

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

In the multi-wavelength light source control system of the present invention, a plurality of light source units each equipped with a plurality of light sources having different peak wavelengths and one or a plurality of light sources having different peak wavelengths are lit for each of the light source units. A control terminal that transmits a lighting control signal that specifies light sources with a plurality of peak wavelengths, receives the lighting control signal, receives an AC power supply voltage via a first power cord, and lights based on the lighting control signal. The 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. depending on the lighting control command by outputting respective driving signals to the plurality of light source units, have a plurality of power supplies for lighting the light source of the plurality of light source units independently, the controller, the It was detected by the first filter circuit that removes the noise of the AC power supply voltage supplied via the first power supply cord, the zero cross detection circuit that detects the zero cross point of the AC power supply voltage, and the zero cross detection circuit. It has a first coupler that superimposes the divided lighting control command on the AC power supply voltage output by the first filter circuit at a timing near a plurality of zero cross points, and has a plurality of power supply devices. Each has a second coupler that extracts the lighting control command from the AC power supply voltage supplied via the second power supply cord, and the AC power supply voltage supplied via the second power supply cord. It has a conversion circuit for converting an AC power supply voltage and a second filter circuit for removing a ripple component of the DC power supply voltage converted by the conversion circuit, and each of the plurality of light source units is ultraviolet light and visible. A light source having a different peak wavelength in the region of light and near-infrared light is mounted, and each of the plurality of power supply devices independently lights and controls the light source for each channel of the plurality of light source units. The power supply device is connected in parallel to the second power supply cord, each has its own unique identifier, and the controller transmits the lighting control command including the unique identifier to the second power supply cord. Each of the plurality of power supply devices receives 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 the first The lighting control frame transmitted to the power cord of 2 If the unique identifier included in the screen does not match its own unique identifier, the lighting control command is not accepted, and the control terminal receives the light intensity for pulse-lighting the light source of the light source unit for each light source unit. , Duty ratio, lighting time and extinguishing time are set, and the lighting control signal corresponding to the setting is transmitted, and the plurality of light source units have the light intensity, duty ratio, lighting time and the light intensity set for each light source unit. The pulse lighting is performed according to the extinguishing time, and the light source unit uses the light source that emits white light and the light source of the white light in order to improve the color playability of the light source of the white light by controlling the lighting of the power supply device. On the other hand, by lighting in combination with one or a plurality of light sources having different peak wavelengths, light close to natural light is emitted, and the control terminal is used to pulse-light the light source of the light source unit for each light source unit. The duty ratio is set, and the lighting control signal corresponding to the set duty ratio is transmitted in synchronization with the timing near the zero cross point detected by the zero cross detection circuit, and the power supply device performs the lighting control. The signal is received, the pulse drive signal of the duty ratio is output, and the light source unit performs pulse lighting of the duty ratio in synchronization with the timing near the zero cross point detected by the zero cross detection circuit. It is a feature.

According to the present invention, a plurality of light sources having different peak wavelengths can be controlled with high accuracy and various condition settings with a simple configuration.

It is a figure which shows the whole structure example of the multi-wavelength light source control system by 1st Embodiment. It is a figure which shows an example of the structure of the light source mounted on the light source unit. It is a figure which shows an example of a power line communication carrier wave and code data. It is a figure explaining the communication timing superposed on the AC power supply voltage. It is a timing chart explaining the procedure of controlling a light source unit from a control terminal. It is a figure explaining the configuration example of a controller. It is a figure explaining the configuration example of the power supply device. It is a figure which shows the whole structure example of the multi-wavelength 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 104b. 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, and first It has 3 light source units 106c. The AC power cord 103 is the first power cord, and the AC power cord 105 is the second power cord.

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

Each of the plurality of light source units 106a to 106c mounts a plurality of light sources having different peak wavelengths from each other. The first power supply device 104a has, for example, the first unique identification ID (unique identifier), and supplies the first light source unit 106a to a plurality of light sources according to the control signal received via the AC power cord 105. Control the power to be used. The second power supply device 104b has, for example, the second unique identification ID, and controls the power supplied to the plurality of light sources of the second light source unit 106b according to the control signal received via the AC power cord 105. To do. The third power supply device 104c has, for example, the 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 supply cord 105 and have their own unique identification IDs. 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 of a desired wavelength by the light source units 106a to 106c. The light source units 106a to 106c can irradiate plants in different test groups with light having different peak wavelengths. The multi-wavelength light source control system 100 is used for research aimed at controlling crop productivity, components, etc., such as promoting crop growth, increasing yield, and enhancing functional components by irradiating light with a specific peak wavelength. It can be used. The multi-wavelength light source control system 100 has a large number of wavelength ranges in which light can be emitted, and can irradiate light by arbitrarily setting light characteristics such as a spectrum and a lighting pattern.

The light conditions required for plant research using artificial light are not limited to the above spectral problems. When conducting an experiment by irradiating light 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 irradiating light. Therefore, the multi-wavelength light source control system 100 has a feature that not only the emission wavelength for testing but also illumination light close to natural light can be irradiated so that the state of the sample can be appropriately confirmed visually by a human.

Further, the multi-wavelength light source control system 100 has a pulse lighting function in order to suppress the power cost or because pulse lighting may be more suitable for plant growing conditions than continuous lighting of the light source. The multi-wavelength light source control system 100 has a feature that the period of pulse lighting, the pulse width, and the like can be adjusted in order to verify the optimum conditions for pulse lighting under the control of the control terminal 101.

As a result, in 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 kind of lighting pattern affects the response reaction of the plant. Can be verified experimentally.

The light source units 106a to 106c each have a plurality of light sources having different peak wavelengths, and can flexibly adjust light characteristics such as spectrum and color rendering properties, and also provide lighting such as pulse lighting cycle and pulse width. The pattern can be controlled arbitrarily. Here, the plurality of light sources mounted on the light source units 106a to 106c each having different peak wavelengths have different rated specifications such as voltage, current, and efficiency. Therefore, in general, it is difficult to uniformly control the power supply for all the light sources, and the configuration and control system for controlling the light source units 106a to 106c become complicated. Therefore, the multi-wavelength light source control system 100 is provided with the controller 102 and the power supply devices 104a to 104c to operate a plurality of light source units 106a to 106c equipped with a large number of types of light sources having different rated specifications in a complicated setting. The control can be performed with high accuracy only by connecting the AC power cord 105 without complicating the configuration. The 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 has a plurality of white LEDs, a plurality of UV (ultraviolet or ultraviolet light) LEDs having a peak wavelength of 370 nm, a plurality of UV LEDs having a peak wavelength of 390 nm, and a peak wavelength of 410 nm. Purple LEDs, blue LEDs with a peak wavelength of 450 nm, blue LEDs with a peak wavelength of 460 nm, green LEDs with a peak wavelength of 525 nm, and yellow with a peak wavelength of 560 nm. Multiple green LEDs, multiple yellow LEDs with a peak wavelength of 590 nm, multiple orange LEDs with a peak wavelength of 605 nm, multiple red LEDs with a peak wavelength of 624 nm, and red with a peak wavelength of 660 nm. An LED including a plurality of LEDs, a plurality of red LEDs having a peak wavelength of 730 nm, a plurality of IR (infrared or infrared light) LEDs having a peak wavelength of 810 nm, and a plurality of IR LEDs having a peak wavelength of 940 nm. Has a chip. As described above, the light source units 106a to 106c each have LEDs of a total of 15 types of light sources having different peak wavelengths in the regions of ultraviolet light, visible light, and infrared light, and are appropriately visible to the human eye. It also has a white LED to ensure the property.

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 UV 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. Is set to a plurality of green LEDs having a peak wavelength of 525 nm, a fourth channel CH4 is set to a plurality of yellow-green LEDs having a peak wavelength of 560 nm, and a fifth channel CH5 is set to a plurality of yellow LEDs having 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 LEDs of the IR having a peak wavelength of 940 nm.

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

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

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

Each of the plurality of light source units 106a to 106c is equipped with a light source having different peak wavelengths of 6 channels CH1 to CH6 or more in the regions of ultraviolet light, visible light, and near infrared light. The plurality of power supply devices 104a to 104c independently control the lighting of the light sources 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 that combines a blue or purple LED with a phosphor) and a white light light source, respectively, by controlling the lighting of the power supply devices 104a to 104c. By lighting a combination of one or more light sources having different peak wavelengths with respect to a white light source in order to improve the color rendering property, it is possible to irradiate light having a color rendering property Ra = 90 to 100, which is close to natural light. ..

The light source units 106a to 106c may be equipped with more types and different light sources having different specifications. Further, the light source units 106a to 106c are 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 whose light emission can be controlled.

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

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

FIG. 3B is a diagram showing an example of a power line communication carrier wave and code data transmitted by the power supply devices 104a to 104c 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-mentioned FSK frequencies), and the coding method is NRZ (1 is a carrier wave, 0 is no carrier wave). 16 waves of 422 kHz are 1 bit (1 eu). The data of 1eu with a carrier wave of 422 kHz is "1". The data of 1eu without a signal without a carrier wave is "0".

FIG. 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. Is. The AC power supply voltage 401 has a zero cross point 403 where 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 by superimposing it on the AC power supply voltage 401 with the vicinity of the zero crossing point 403 as the communication section 402. The communication section 402 has a length of 1/5 or less of the cycle of the AC power supply voltage 401, and preferably 1/10 or less of the cycle of the AC power supply voltage 401.

FIG. 4B is an enlarged view of the zero crossing point 403 of the AC power supply voltage 401 of FIG. 4A. The controller 102 superimposes the transmission data 404 on the AC power supply voltage 401 and transmits the transmission data 404 in the vicinity of the zero crossing point 403 of the AC power supply voltage 401. The transmission data 404 is FSK-modulated code data having carriers of 400 kHz and 444 kHz in FIG. 3 (A).

As described above, the transmission from the controller 102 to the power supply devices 104a to 104c is performed near the zero cross point 403. The zero cross point 403 refers to a point where the AC power supply voltage 401 becomes 0V. The power supply devices 104a to 104c have 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 transmits in the vicinity of the zero crossing 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 msec 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 of the touch screen on the screen by the user. The lighting control command includes a unique identification ID indicating any 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 a lighting control command (lighting control signal) for each of the light source units 106a to 106c, which specifies a light source having one or a plurality of peak wavelengths to be turned on among the 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 wirelessly receives an ID designation command for designating the unique identification ID and participating in the communication via the AC power cord 105 as the power supply device. It is transmitted to 104a to 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 of FIGS. 3 (A) and 4 (A), (B).

Next, in step S503, each of the power supply devices 104a to 104c receives an ID designation command from the controller 102. Then, when the received ID designation command includes its own unique identification ID, each of the power supply devices 104a to 104c normally performs the ID designation command / response process in response to the ID designation command. The response data indicating that it has been received is transmitted to the controller 102. When the ID designation command includes the first unique identification ID, the first power supply device 104a transmits the response data to the controller 102. When the ID designation command includes the second unique identification ID, the second power supply device 104b transmits the response data to the controller 102. When the ID designation command includes the third unique identification ID, the third power supply device 104c transmits the response data to the controller 102. This transmission is the transmission of the ASK modulation of FIG. 3 (B).

Next, in step S504, when the controller 102 receives the response data from any of the power supply devices 104a to 104c, the controller 102 responds to the lighting control command received from the control terminal 101 via the power supply device 104a to the AC power supply code 105. A dimming command is sent 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 of FIGS. 3 (A) and 4 (A), (B). The controller 102 divides the dimming command (lighting control command) based on the lighting control command (lighting control signal), superimposes it on the communication section 402 of the AC power supply voltage 401, and transmits it to the AC power supply code 105.

Next, in step S505, each of the power supply devices 104a to 104c receives a dimming command from the controller 102 via the AC power cord 105. Then, when the received dimming command includes its own unique identification ID, each of the power supply devices 104a to 104c normally performs dimming command / response processing in response to the dimming command. The response data indicating that it has been received is transmitted to the controller 102. This transmission is the transmission of the ASK modulation of FIG. 3 (B).

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. The voltage of the pulse lighting cycle and 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 has a period and a pulse width corresponding to the dimming command for the light sources of each channel of the first light source unit 106a. Supply the voltage of. When the dimming command includes the second unique identification ID, the second power supply device 104b has a cycle corresponding to the dimming command for the light sources of each channel of the second light source unit 106b. Supply a pulse width voltage. When the dimming command includes the third unique identification ID, the third power supply device 104c has a cycle corresponding to the dimming command for the light sources of each channel of the third light source unit 106c. Supply a pulse width voltage.

Each of the plurality of power supply devices 104a to 104c accepts the dimming command when the unique identification ID included in the dimming command received from the AC power cord 105 matches its own unique identification ID, and receives the dimming command from the AC power cord 105. If the unique identification ID included in the received dimming command does not match its 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, in response to the dimming command.

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

In step S507, when the controller 102 receives the response data from any of the power supply devices 104a to 104c, the controller terminal 101 outputs a lighting processing result indicating that any of the power supply devices 104a to 104c has normally received the dimming command. Send wirelessly to.

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

FIG. 6 is a diagram showing 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 the first filter circuit, and the AC power supply voltage is input from the AC power supply cord 103 via the fuse 609 and the varistor 610, and the noise of the AC power supply voltage is removed to remove the noise. 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 by the filter circuit 602, generates a pulse signal of 2 msec before and after the zero-cross point 403, and outputs the pulse signal of 2 msec to the control circuit 606. To do. This pulse signal shows the communication section 402 of FIG. 4 (A).

The power supply circuit 601 inputs an AC power supply voltage from the AC power supply cord 103 via the fuse 609 and the varistor 610, converts the AC power supply voltage into a DC power supply voltage, and controls the DC power supply voltage by the I / F circuit 605. It supplies to the circuit 606, the transmission circuit 607, and the reception circuit 608.

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

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

Then, 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 according to the lighting control command received by the I / F circuit 605, and transmits the dimming command to the transmission circuit 607. To instruct. The transmission circuit 607 performs FSK modulation of 400 kHz and 444 kHz for the dimming command, and transmits the dimming command after the modulation 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 it to the AC power supply code 105. Specifically, the coupler 604 is the first coupler, and the above 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. Superimpose each of the dimming commands.

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

FIG. 7 is a diagram showing 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 transmission circuit 707, and a reception circuit. It has a 708, a sensor I / F circuit 709, a connection terminal 710, a fuse 711, a varistor 712, and a 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 for detecting light, a temperature sensor circuit for detecting temperature, and / or a humidity sensor circuit for detecting humidity.

The control power supply circuit 701 inputs an AC power supply voltage from the AC power supply cord 105 via 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. It is supplied to the 703, the dimming control circuit 706, the transmission circuit 707, the reception circuit 708, and the sensor I / F circuit 709. The filter circuit 703 is a second filter circuit, and removes the ripple component of the DC power supply voltage output from the control power supply circuit 701 and outputs the ripple component 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 receiving circuit 708. The receiving circuit 708 receives the ID designation command, demodulates the received ID designation command, and outputs the received ID designation command to the microcomputer 702.

Then, the microcomputer 702 instructs the transmission circuit 707 to transmit the response data corresponding to the ID designation command. The transmission circuit 707 ASK-modulates the response data and transmits the modulated response data to the coupler 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 the response data to the AC power supply cord 105.

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

Then, the microcomputer 702 instructs the transmission circuit 707 to transmit the response data corresponding to the dimming command. The transmission circuit 707 ASK-modulates the response data and transmits the modulated response data to the coupler 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 the response data to the AC power supply cord 105.

Further, 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 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. Is output to the first light source unit 106a via. 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.

The first power supply device 104a 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 showing 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 in an experiment for investigating how different light irradiation affects the generated mushroom traits. The basic configuration of this embodiment is the same as that of the first embodiment. Hereinafter, the points that the present embodiment differs 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, and six unit connection cables 107a to 107f. It has six light source units 106a to 106f.

The mushroom generator 801 is provided with first to seventh test plots and control plots. The first test plot is covered with a first light-shielding sheet 802a, and the first light source unit 106a irradiates the first fungus bed 803a with light. The second test plot is covered with a 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 plots are covered with the third to sixth light-shielding sheets 802c to 802f, respectively, and the third to sixth light source units 106c to 106f are the third to sixth fungal beds. Irradiate 803c to 803f with light. The seventh test plot is covered with 802 g of the seventh light-shielding sheet, and the seventh fungus bed 803 g is placed in a light-shielded state without a light source unit. In the control section, the eighth fungus bed 803h is placed without a light-shielding sheet and a light source unit.

The mushroom generation storage 801 is a storage for cultivating mushrooms, and is provided with first to seventh test plots partitioned by seven light-shielding sheets 802a to 802g. The light source units 106a to 106f each have a light source of 6 channels CH1 to CH6, and are equipped with LED light sources having different peak wavelengths. In the first to sixth test groups, the first to sixth light source units 106a to 106f, which are set to light at different peak wavelengths, are attached. In the seventh test group, the light source unit is not attached and the environment is dark. Outside the first to seventh test plots, a control plot of the light environment of the conventional cultivation style by turning on the interior light (fluorescent lamp) of the mushroom generator 801 is provided. In these seven test plots and one control plot, fungal beds 803a to 803h in which mushroom inoculum is cultivated are arranged, and at the same time, fungal beds 803a to 803h are cultivated, and the fungus beds 803a to 803h occur. By evaluating mushrooms, it is possible to verify how light environments with different peak wavelengths affect mushroom yields and traits.

FIG. 9 is a diagram showing an example of setting control conditions of the light environment of 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 of the first to sixth test groups, respectively, and are lit with different emission colors. Further, the first to sixth light source units 106a to 106f are adjusted to an intensity such that the photon flux density on the surface of the fungus beds 803a to 803f is ^{about 10 μmol / m 2 / s.} Further, the first to sixth light source units 106a to 106f are set to pulse-light from 6:00 to 18:00 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 group according to a user's touch screen operation instruction, and photon flux density. The (light intensity) ^{is set to 10 μmol / m 2} / s, the duty ratio of pulse lighting 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 group according to an operation instruction of the user's touch screen, and photon flux density. The (light intensity) ^{is set to 10 μmol / m 2} / s, the duty ratio of pulse lighting 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 group according to an operation instruction of the user's touch screen, and photon flux density. The (light intensity) ^{is set to 10 μmol / m 2} / s, the duty ratio of pulse lighting 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 group according to an operation instruction of the user's touch screen, and photon flux density. The (light intensity) ^{is set to 10 μmol / m 2} / s, the duty ratio of pulse lighting 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 group according to an operation instruction of the user's touch screen, and photon flux density. The (light intensity) ^{is set to 10 μmol / m 2} / s, the duty ratio of pulse lighting 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 group according to the operation instruction of the user's touch screen, and the photon flux density. The (light intensity) ^{is set to 10 μmol / m 2} / s, the duty ratio of pulse lighting 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 the light intensity, the duty ratio, the lighting time, and the extinguishing time for pulse-lighting the light sources of the light source units 106a to 106f for each of the light source units 106a to 106f, and sets the zero cross detection circuit 603. A lighting control command corresponding to the setting is transmitted in synchronization with the timing near the zero crossing 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 duty ratio. The plurality of light source units 106a to 106f are synchronized with the timing near 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 of the light source units 106a to 106f are set. Pulse lighting is performed according to the above. As a result, the zero cross point 403 can be maintained in a state with less noise, so that the risk of communication error can be reduced.

The seventh test section has no light source unit and is shielded from light. In the control group, a fluorescent lamp having a photon flux density (light intensity) of 10 μmol / m ² / s is lit from 6:00 to 18:00.

As described above, the first to sixth light source units 106a to 106f irradiate the first to sixth bacterial beds 803a to 803f with light having different peak wavelengths from each other. By evaluating the 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 uses power line communication via the AC power cord 105 to transmit ultraviolet light, visible light, and near-infrared light without complicating the configuration. It is possible to control the light emission of a plurality of light source units 106a to 106f equipped with a large number of light sources having different peak wavelengths in the region. At that time, the multi-wavelength light source control system 100 can independently specify the light source units 106a to 106f and the channels CH1 to CH6 and control them with high accuracy.

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

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. The power supply devices 104a to 104f have dimming drivers 704 and 705 that generate pulse drive signals, respectively. The dimming drivers 704 and 705 are pulse generators that 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 with 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 crossing point 403 of the AC power supply voltage 401, they can generate pulse drive signals synchronized with each other. As a result, the plurality of light source units 106a to 106f can perform pulse lighting in synchronization with each other. Further, since the controller 102 communicates in the communication section 402 near the two zero cross points 403 existing in one cycle of the AC power supply voltage 401, even if the plug of the AC power supply cord 103 is inserted into the outlet in a different direction. , The timing of the zero crossing point 403, which occurs twice in the cycle of the AC power supply voltage 401, is synchronized, and the synchronization of the pulse lighting of the plurality of light source units 106a to 106f is not disrupted.

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 and an evaluation light source in an artificial light type plant factory. In addition, it is not limited to applications for these plants, but can also be used in various fields such as industry, healthcare, etc., such as experiments on photocatalysts using ultraviolet light and research on biometrics using near-infrared light. It is possible and has high industrial applicability.

It should be noted that all of the above embodiments merely show examples of embodiment in carrying out the present invention, and the technical scope of the present invention should not be construed in a limited manner by these. That is, the present invention can be implemented in various forms without departing from the technical idea or its main features.

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

Claims (4)

Multiple light source units equipped with multiple light sources with different peak wavelengths and
A control terminal that transmits a lighting control signal that specifies a light source having one or a plurality of peak wavelengths to be lit among a plurality of light sources having different peak wavelengths for each light source unit.
The lighting control signal is received, the AC power supply voltage is supplied via the first power supply cord, and the lighting control command based on the lighting control signal is divided and superimposed on the AC power supply voltage to superimpose the second power supply cord. With the controller to send to
By receiving the lighting control command superimposed on the AC power supply voltage via the second power supply cord and outputting drive signals to the plurality of light source units in response to the lighting control command, the plurality of light sources are output. the light source unit of the light source have a plurality of power supplies for lighting each independently
The controller
A first filter circuit that removes noise from the AC power supply voltage supplied via the first power supply cord, and a first filter circuit.
A zero-crossing detection circuit that detects the zero-crossing point of the AC power supply voltage,
It has a first coupler that superimposes the divided lighting control command on the AC power supply voltage output by the first filter circuit at the timing near the plurality of zero cross points detected by the zero cross detection circuit. And
Each of the plurality of power supply devices
A second coupler that extracts the lighting control command from the AC power supply voltage supplied via the second power supply cord, and
A conversion circuit that converts the AC power supply voltage supplied via the second power supply cord into a DC power supply voltage, and
It has a second filter circuit that removes the ripple component of the DC power supply voltage converted by the conversion circuit.
Each of the plurality of light source units is equipped with a plurality of light sources having different peak wavelengths in the regions of ultraviolet light, visible light, and near infrared light.
Each of the plurality of power supply devices independently lights and controls a plurality of light sources of the plurality of light source units.
The plurality of power supply devices are connected in parallel to the second power supply cord, and each has 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 supply cord matches its own unique identifier, and receives the lighting control command. If the unique identifier included in the lighting control command transmitted to the power cord of is not the same as its own unique identifier, the lighting control command is not accepted and the lighting control command is not accepted.
The control terminal sets the light intensity, duty ratio, lighting time, and extinguishing time for pulse-lighting the light source of the light source unit for each light source unit, and transmits the lighting control signal according to the settings.
The plurality of light source units perform pulse lighting according to the light intensity, duty ratio, lighting time, and extinguishing time set for each light source unit.
The light source unit has one or a plurality of light sources having different peak wavelengths from the light source that emits white light and the light source of white light in order to improve the color rendering property of the light source of white light by controlling the lighting of the power supply device. By lighting in combination with a light source, it irradiates light close to natural light.
The control terminal sets a duty ratio for pulse-lighting the light source of the light source unit for each light source unit, and sets the duty ratio in synchronization with the timing near the zero cross point detected by the zero cross detection circuit. The lighting control signal corresponding to the duty ratio is transmitted, and the lighting control signal is transmitted.
The power supply device receives the lighting control signal, outputs the pulse drive signal of the duty ratio, and outputs the pulse drive signal.
The light source unit is a multi-wavelength light source control system characterized in that pulse lighting of the duty ratio is performed in synchronization with a timing near a zero cross point detected by the zero cross detection circuit. The multi-wavelength light source control system according to claim 1 , wherein 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). The multi-wavelength light source control system according to claim 2, wherein the multi-wavelength light source control system is a multi-wavelength light source control system for plant research. Each of the plurality of light source units includes a plurality of white LEDs, a plurality of UV (ultraviolet or ultraviolet light) LEDs having a peak wavelength of 370 nm, a plurality of UV LEDs having a peak wavelength of 390 nm, and a peak wavelength of 410 nm. Purple LEDs, blue LEDs with a peak wavelength of 450 nm, blue LEDs with a peak wavelength of 460 nm, green LEDs with a peak wavelength of 525 nm, and yellow with a peak wavelength of 560 nm. Multiple green LEDs, multiple yellow LEDs with a peak wavelength of 590 nm, multiple orange LEDs with a peak wavelength of 605 nm, multiple red LEDs with a peak wavelength of 624 nm, and red with a peak wavelength of 660 nm. Having a plurality of LEDs, a plurality of red LEDs having a peak wavelength of 730 nm, a plurality of IR (infrared or infrared light) LEDs having a peak wavelength of 810 nm, and a plurality of IR LEDs having a peak wavelength of 940 nm. The multi-wavelength light source control system according to claim 3.

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