KR101164006B1 - LED Lighting Device for Plant Cultivation and thereby Cultivation Method - Google Patents

Abstract

According to a first embodiment of the present invention, an LED combination package in which at least one non-visible light emitting device having infrared and ultraviolet wavelength bands and at least one light emitting device in red, blue, green, and yellow visible light wavelength bands are combined to emit light Wow; Sensing unit for detecting the amount of ambient light, temperature, humidity and time; A storage unit for storing growth condition information including growth time, light quantity, wavelength band, temperature and humidity of each plant; The growth condition data including the growth time and the amount of light for each growing period of the plant stored in the storage unit by receiving the information of the growth time for each growing period of the plant stored in the storage unit and the ambient light quantity, temperature, humidity and time detection signal of the detection unit And a control unit for controlling the LED combination package to selectively turn on and off and the amount of light.

Lighting device, light emitting device, artificial light source for plant cultivation

Description

Intelligent lighting device and method for plant cultivation {LED Lighting Device for Plant Cultivation and thereby Cultivation Method}

The present invention relates to an intelligent plant cultivation lighting apparatus and control method for promoting plant growth, and more particularly, light emitting devices in the visible wavelength range of red life, blue, yellow, and green, and light emission in the invisible wavelength range to prevent pests. The lighting device equipped with the element is automatically illuminated to the plant under cultivation according to the growth data required according to the growth conditions, such as the amount of light required for the flowering time of each plant, and intelligent to promote the growth of the plant by manual operation by the user. It relates to a plant cultivation lighting device and a control method.

Light Emitting Diode is a semiconductor device that emits light for electronic control and has the advantages of low power consumption, long life, small size, high illuminance effect, and low heat generation when compared to other lighting devices. . For this reason, light emitting devices are known as environmentally friendly materials that save energy and dramatically reduce carbon emissions.

Therefore, the lighting device using the light emitting device as described above is expected to grow rapidly in the market for eco-friendly lighting device that saves energy while focusing on green growth in the world.

At present, the use of the light emitting device (LED) is used as an electric sign (advertising or subtitle), fluorescent lamps, street lights, various electronic product indicator lights, vehicle signal lights, televisions, flashing vessels or aircraft, lanterns, and the like. In addition, the light emitting device (LED) can implement 460nm blue and 660nm red, which are wavelengths used for photosynthesis of plants, with lighting, thereby enabling plant cultivation.

In addition, the lighting device using the light emitting device can selectively use the UV wavelength band that can increase the content of the functional material and 600 nm, which is a pest avoiding wavelength, so that the use of the light using the light emitting device in plant cultivation can save energy and promote growth. It can be used as lighting for multi-purpose plant cultivation such as improvement and pest avoidance. Therefore, it is expected that there is a need for a lighting device capable of efficiently controlling the growth of plants grown indoors or indoors using such lighting devices and a control method of such devices.

Therefore, the present invention has been made to solve the conventional problems as described above, the object of the present invention is to increase the photosynthetic efficiency of the plant to promote plant growth and improve the functional components of the plant and have the function of insect avoidance and horticultural plants It is an object of the present invention to provide an intelligent plant cultivation lighting device and control method suitable for artificial light sources that can promote the growth of the plant.

It is another object of the present invention to complete at the start of plant cultivation with at least one light emitting device having invisible light wavelength and light emitting device having visible light wavelength including red (630 nm to 700 nm) and blue (420 nm to 480 nm) wavelength ranges. Providing an intelligent plant cultivation lighting apparatus and control method for storing growth data of light quantity and cultivation time corresponding to each growth step up to and automatically promoting plant growth using the growth data classified by each plant. For the purpose of

Another object of the present invention is to enable unmanned cultivation using the set growth data and at the same time can adjust the amount of light and lighting time of the artificial light source by the user's manual operation intelligent plant cultivation lighting device capable of automatic and manual selective conversion And a control method.

The present invention includes the following embodiments in order to achieve the above object.

According to a first embodiment of the present invention, an LED combination package in which at least one non-visible light emitting device having infrared and ultraviolet wavelength bands and at least one light emitting device in red, blue, green, and yellow visible light wavelength bands are combined to emit light Wow; Sensing unit for detecting the amount of ambient light, temperature, humidity and time; A storage unit for storing growth condition information including growth time, light quantity, wavelength band, temperature and humidity of each plant; The growth condition data including the growth time and the amount of light for each growing period of the plant stored in the storage unit by receiving the information of the growth time for each growing period of the plant stored in the storage unit and the ambient light quantity, temperature, humidity and time detection signal of the detection unit And a control unit for controlling the LED combination package to selectively turn on and off and the amount of light.

According to a second embodiment of the present invention, in the first embodiment, the lighting apparatus includes an input unit for setting a ratio of plant cultivation conditions, growth periods, and light quantity of each light emitting element in the LED combination package, and the Internet or wired or wireless connection. It further comprises a communication unit connected to the communication network.

According to a third embodiment of the present invention, in the second embodiment, the lighting apparatus is a cultivation time of a previous cultivated plant and a currently cultivated plant in the storage unit, and a kind, time and light quantity of a light emitting element to be driven during cultivation. Characterized in that the growth data including the information is stored.

In a third embodiment according to the present invention, in the third embodiment, the lighting apparatus further includes a display unit for displaying growth data stored in the storage unit and data input by the input unit.

According to a fifth embodiment of the present invention, in the fourth embodiment, the lighting apparatus further includes LED driving means for emitting light by applying driving power to each light emitting device of the LED combination package under the control of the control unit. do.

According to a sixth embodiment of the present invention, in the fifth embodiment, drive means for outputting a light emitting element drive signal pulse-width modulated by a control signal applied from the controller, and pulse width modulation applied from the drive means. And output means for applying a power corresponding to the light emitting device driving signal to the driving device and preventing back electromotive force.

In the seventh embodiment according to the present invention, in the first or second embodiment, the light quantity ratio of the red light emitting device is 40 to 70% of the total light quantity (unit: umol / m ² ~ s) at the time of plant growth It is characterized by.

In the eighth embodiment according to the present invention, in the first or second embodiment, the light quantity ratio of the blue light emitting element is 10 to 40% of the total light quantity (unit: umol / m ² ~ s) at the time of plant growth It is characterized by.

In the ninth embodiment according to the present invention, in the first or second embodiment, the light quantity ratio of the green light emitting device is 10 to 20% in the total light quantity (unit: umol / m ² ~ s) at the time of plant growth It is characterized by.

In the tenth embodiment according to the present invention, in the first or second embodiment, the amount of light of the yellow light emitting device is 5 to 10% of the total amount of light (unit: umol / m ² ~ s) at the time of plant growth It features.

In the eleventh embodiment according to the present invention, in the first or second embodiment, the invisible light emitting device includes an ultraviolet light emitting device of 200 nm to 410 nm and an infrared light emitting device of 700 nm to 900 nm, respectively.

In the twelfth embodiment according to the present invention, in the eleventh embodiment, the light quantity of the infrared light emitting device is characterized in that 10 to 20% of the total light amount (unit: umol / m ² ~ s) at the time of plant growth. .

According to a thirteenth embodiment according to the present invention, in the eleventh embodiment, the amount of light of the ultraviolet light emitting device is 5 to 10% of the total amount of light (unit: umol / m ² s) at the time of plant growth. .

According to a fourteenth embodiment of the present invention, in the control method of an intelligent plant cultivation lighting apparatus for promoting plant growth, the cultivation period according to the cultivated plant, the amount of light for each growth stage, and the type and emission time of the driven light emitting elements are set. Setting step; An illumination step of illuminating the plant according to the cultivation period set in the setting step, the amount of light and the type of the light emitting device to be driven; A cultivation condition change determining step of determining whether a change request signal for data set in the setting step is applied; And a cultivation completion step of determining whether the cultivation period set in the setting step has elapsed and displaying cultivation completion.

According to a fifteenth embodiment of the present invention, in the fourteenth embodiment, the setting step includes: a cultivation determining step of checking whether the lighting device is being grown while the lighting device is turned on; A plant and a cultivation period setting step of setting a cultivation period of the cultivated plant and the target plant to be cultivated, if the lighting device is not being cultivated in the cultivation determination step; And a cultivation condition setting step of setting a cultivation condition according to the type and cultivation period of the inputted plant.

In a sixteenth embodiment of the present invention, in the fifteenth embodiment, the plant and cultivation period setting step includes: a plant type group display step of displaying a kind group of cultivable plants; A selection judgment step of determining which one of the plants displayed in the plant type group display step is selected; A cultivation period display step of displaying a cultivation period of the plant selected in the selection judging step; A cultivation period selection judging step of determining whether a selection signal of a cultivation period is applied among the information output in the cultivation period display step; And a loading step of loading cultivation condition information of the plant selected in the selection step.

According to the seventeenth embodiment of the present invention, in any one of the fourteenth to sixteenth embodiments, at least one of the setting step and the cultivation condition changing step is performed by the data set when the manual operation selection signal is applied. The control of the lighting device is stopped and the lighting device is operable in real time according to a control signal input by a manual operation.

The lighting apparatus according to the embodiment of the present invention as described above can be used as a low-luminance high brightness light emitting device lighting device for cultivating plants in the room without natural light. To this end, by controlling the illumination of the light emitting device to promote the growth of the target plant to determine the wavelengths for maximizing plant growth, it is possible to set the optimal light intensity of the light emitting device for each target plant and to radiate light uniformly to the plant. Therefore, despite the shortening of the cultivation period and the influence of the seasonal environment and the surrounding environment on the cultivation of horticultural plants, many harvests can be expected, which is economically beneficial.

In addition, the intelligent plant cultivation lighting apparatus and control method according to the present invention is to illuminate the gardening plants with the illumination and the light intensity and emission wavelength range is automatically adjusted based on the growth data secured for each plant to facilitate the user, Since it is possible to switch to the manual mode during the automatic mode, it is possible to control the appropriate lighting according to the situation, so it is very easy to cope with the sudden situation.

In addition, the lighting device and control method for intelligent plant cultivation according to the present invention can be utilized as a lighting device using environmentally friendly functional power LED combination package using the lighting device and the LED combination package for indoor plants using insect avoiding clean power LED combination package As it can be used as a lighting device, there is an effect that can expand the business field.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference numerals as possible. Further, the detailed description of well-known functions and constructions that may obscure the gist of the present invention will be omitted.

Figure 1a is a diagram showing the spectral structure of natural light (sunlight) to explain the wavelength and role of the LED combination package configured in the intelligent plant cultivation lighting device.

Referring to FIG. 1A, the natural light may be ultraviolet rays having a wavelength of 100 nm to 380 nm, visible rays having a wavelength of 380 nm to 700 nm, and infrared rays having a wavelength of 700 nm or more. consist of. The ultraviolet rays may be classified into UV-C, UV-B, and UV-A according to wavelengths, and the visible rays may be classified into purple, indigo blue, blue, green, yellow, orange, red, and the like, and the infrared rays are near infrared rays. (near infrared) and far infrared (far infrared) can be divided into. And such sunlight affects plant growth in light of a specific wavelength. Table 1 below shows wavelengths in which the ultraviolet rays, visible rays and infrared rays affect the growth of plants.

Wavelength (nm) Ray type Main Operation UV-rays 100-280 UV-A Disinfecting utensils, harmful to human body 280-315 UV-B Plant Growth Suppression and Morphological Change 315-380 UV-C Enhanced antioxidants, pigment formation Thorn
beam 380-400 purple Shortest visible light, no visible action 400-420 Indigo No special action 420-470 blue Influence on crop form and growth, suppressing overgrowth
Flowering induction, photosynthesis effective 470-570 green Safety light, photosynthesis effective 570-610 yellow Photosynthesis effective, pest avoidance 610-650 Orange Growth promoting effect, photosynthesis effect 650-700 Red Growth Promotion, Photosynthesis Effectiveness infrared ray 700-800 Near infrared ray Laugh growth (stem height), germination inhibition More than 800 Far Infrared thermic rays

As shown in Table 1, it can be seen that UV-C (hereinafter referred to as ultraviolet light), blue, green, yellow, red, and near infrared light (hereinafter referred to as infrared light) affect the growth of plants. Therefore, when cultivating a plant indoors, the light having an appropriate wavelength according to the growth of the plant can be efficiently grown.

However, lamps currently used in facilities or indoors do not generate all the wavelengths of sunlight (natural light) as shown in FIG. 1B shows the spectral characteristics of a normal fluorescent lamp. Such a fluorescent lamp cannot generate light of all wavelengths necessary for plant growth, such as sunlight, and must use high power for illumination.

Therefore, the lighting apparatus proposed in the embodiment of the present invention is capable of cultivating various kinds of plants having a spectrum similar to that of natural light by combining a plurality of light emitting devices to generate light having a wavelength that greatly affects plants.

1C is a diagram illustrating the spectral characteristics of the LED combination package according to an embodiment of the present invention.

Referring to FIG. 1C, the present invention generates light having a wavelength required for plant growth when a plurality of light emitting devices having different wavelengths are used. To this end, the intelligent plant cultivation lighting apparatus according to the present invention will be described assuming a case using six light emitting elements (ultraviolet, blue, green, yellow, red, infrared). However, the lighting apparatus may be manufactured by adding light emitting devices having different wavelengths as needed, and may also be manufactured by removing some of the six light emitting elements.

2 is an embodiment of the present invention is composed of a PCB and a light diffusion lens 13 designed to illuminate a plurality of wavelengths consisting of a light case 11 and a plurality of light emitting elements, circuit for controlling a plurality of constituent light emitting elements for each wavelength Is provided with an LED driver (light emitting device drive circuit) 12, the control signal of the light emitting device is received through the controller of FIG.

In the first case, the intelligent plant cultivation lighting apparatus according to an embodiment of the present invention may be a lighting device using a dedicated LED combination package for plant cultivation having a wavelength band effective for plant growth and development. In other words, the plant requires a different light source depending on the type of growth stage of the plant. To this end, the light emitting device configuration according to an embodiment of the present invention operates by combining red light, blue light, green light, UV light, super red light, and the like, and thus generates light having a wavelength (light emitting device wavelength) required for the plant type and growth stage. Can be. Therefore, it can be used as a lighting device using the LED combination package of the plant lighting for individually controlling the emission wavelength for growth and suppression required for plant cultivation.

In the second case, the intelligent plant cultivation lighting apparatus according to an embodiment of the present invention can be an LED combination package having excellent heat dissipation reliability in a high temperature environment due to the plant growth characteristics. That is, the present invention is designed so that heat generated by driving the light emitting device does not affect the driving of the light emitting device.

Intelligent plant cultivation lighting apparatus according to an embodiment of the present invention as described above can meet all wavelength bands required for the light emitting wavelength of the whole plant, and because the light emitting device uses a small size of the lighting device, low power consumption, In addition, it is possible to effectively control heat generation by adding a heat dissipation function.

In general, the photon energy and the photon flux can be obtained as in <Equation 1> and <Equation 2>, respectively.

One photon energy (E) with wavelength λ (nm) = hc / λ (nm) (h: Frank's constant, 6.626 * 10E-34Js)

Photon flux at wavelength λ (nm) χ (mW) = χ (mW) * λ (nm) / 119,500 (umol / s)

The light emitting devices of the LED combination package of the present invention have a photon flux as shown in Table 2 below. The wavelengths λ (nm) of the light emitting devices described in Table 2 are described as representative wavelengths for each of the lights, and in addition to the wavelengths described in Table 2, any wavelength may be selected and used.

wavelength
λ (nm) Light emitting element Visibility
V (λ) 1W light flux
(Im) 1W light flux
(umol / s) 1 Im light flux
(umol / s) mW / Im 380 UV 0.000039   0.03  3.1799 119.380 37,541.77 450 B 0.038000  25.95  3.7657    0.145     38.53 520 G 0.710000 484.93  4.3515    0.009     2.06 580 Y 0.870000 594.21  4.8536    0.008    1.68 660 R 0.061000  41.66 5.523    0.133    24.00 730 IR 0.000520   0.36  6.1088   17.200 2,815.63

The wavelength, photon flux, and light conversion efficiency of each light emitting device 11-16 having the photon flux as shown in Table 2 are shown in Table 3 below.

color
color wavelength
λ (nm) Photon flux / 1mW
(umol / s) Light flux
/ 1 W
(umol / s) input
power
(mW) Light conversion efficiency
(%) Print
power
(m / W) Light flux
(umol / s) Equivalent Light Emitting Device Requirement Equivalent Power Consumption
(W) UV 380 0.0032 3.18 100 10% 10.00 0.0032 1155 115.5 Blue 450 0.0038 3.77  80 30% 24.00 0.0090  406  32.5 Green 520 0.0044 4.35  60 15% 9.00 0.0039  938  56.3 Yellow 580 0.0049 4.85  46 22% 10.12 0.0049  748  34.4 Red 660 0.0055 5.52  40 25% 10.00 0.005  665  26.6 Far red 730 0.0061 6.11  36 30% 10.08 0.0066  557  20.0

In Table 3, input power is power * current, light conversion efficiency is light / electric conversion rate, output power is light energy, photon flux is power * λ (nm) / 119500, and photon flux constant is 119500, equivalent The required amount of light emitting element is the fluorescent light photon flux / one light emitting element photon flux, and the equivalent power consumption is the light emitting element requirement * power consumption. In this case, assuming that the light conversion efficiency of 40W fluorescent lamp 20%, the light energy is 8W, the photon flux incident on the plant = 4.59 * 8 = 36.72 (umol / s).

Intelligent plant cultivation lighting apparatus according to the present invention as described above has a spectrum similar to natural light, it can be a lighting device using a multi-functional bio LED combination package capable of growing various kinds of plants. Therefore, the lighting device using the LED combination package is apt to be applied to various horticultural plants, the light emitting elements can be provided by selecting the wavelength of growth stages as needed. That is, when the UV light emitting device needs antioxidant or pigment formation, the blue light emitting device induces flowering and photosynthesis, the green light emitting device needs photosynthesis, the yellow light emitting device needs photosynthesis and pest avoidance, and the red light emitting device promotes growth. In addition, photosynthesis can drive infrared rays when stem elongation is needed, and thus, the light emitting elements of the LED combination package device can be selectively driven to control one or two light emitting elements to control light quantity according to plant growth rate (sprout to seedling stage). It can be controlled selectively.

4 is a view showing the configuration of an intelligent plant cultivation lighting apparatus for growing a plant for each growth stage using the lighting apparatus using the LED combination package as described above according to an embodiment of the present invention. FIG. 5 is a diagram illustrating an example of a database structure stored in the storage unit 220 of FIG. 4. 6A and 6B are views showing the configuration of the LED driver of FIG. 4.

4 to 6B, the intelligent plant cultivation lighting apparatus according to the present invention includes an LED combination package 200 having a plurality of light emitting elements, a control unit 210 for controlling each component, and a communication unit performing communication. 280, a display unit 260 for outputting plant and cultivation data, an LED driver 230 for outputting a drive signal of the LED combination package 200, and an output signal of the LED driver 230. The detection unit 240, the detection unit 270 for detecting the temperature and humidity of the cultivation environment, the manual input of the cultivation conditions and period or the input unit 250 for selecting each cultivation plant and cultivation conditions, and each cultivation plant It includes a storage unit 220 for storing the type and the amount and period of cultivation data of each plant.

The LED combination package 200 may have a configuration as shown in FIGS. 2 to 3 and may include a light emitting device having a plurality of wavelengths. Herein, the light emitting devices may be configured as light emitting devices that generate visible, ultraviolet and / or infrared wavelengths as described above, and the light generated by the light emitting devices may have different growth energy in the growth stage of the plant. Have wavelengths that can provide.

The control unit 210 performs a function of controlling the apparatus according to the embodiment of the present invention, which drives the plant selected by the user to the necessary light amount by selecting the light emitting elements required for each plant step.

The storage unit 220 stores data for driving light emitting devices in each growth stage of the plant. That is, the storage unit 220 is a plant type group, the cultivation period (growth stage) of the plants, and the light type (light emitting elements that must be driven in the cultivation period) for driving the light emitting elements in the cultivation periods, respectively; The amount of light of the light emitting element is stored.

The storage unit 220 is a cultivated plant type data, plants and light (wavelength) response data, required light amount data for each plant type, growth rate data for each plant type, cultivation conditions (temperature, humidity, natural light, nutrient solution, etc.) and growth Store data of velocity data.

The LED driver 230 converts the light emitting device driving signal PWM output from the controller 210 into a signal suitable for a light emitting device under the control of the controller 210 and transmits the converted LED signal to the LED combination package 200. To perform. The LED driver 230 is provided as many as the number of light emitting elements of the light emitting device package 200, and converts the drive signal output from the controller 210 into a drive signal of the corresponding light emitting device and outputs the same. The LED driver 230 controls light type (by light emitting device) and light amount of the light emitting device package 200.

6A and 6B are diagrams showing the configuration of the LED driver 230.

6A and 6B, the driving signal of the light emitting device may be a pulse width modulation (PWM) signal whose pulse width is changed according to the amount of driving light of the light emitting device so as to drive the light emitting device by the controller 210. have.

Accordingly, the driving means 310 converts the PWM driving signal into a driving voltage (Vpp) of the corresponding light emitting device, and the output means 320 is an electrode of the corresponding light emitting device (which may be an anode electrode). The signal output from the means 310 is smoothed and output to the light emitting device. Accordingly, the LED driver 230 generates a driving signal for controlling the amount of light of the corresponding light emitting device of the light emitting device 200 according to the light emitting device driving signal output to the controller 210.

Referring to FIG. 6B, a detailed circuit diagram of the LED driver 230 illustrates an example in which six LED drivers having the same configuration are illustrated in FIG. 6A. The light emitting devices of the LED combination package 200 may be operated by different driving voltages. When the LED combination package 200 having the configuration as shown in FIG. 2 is configured, the driving voltage of the yellow, blue, and green light emitting devices may be 3.3V, and the red light emitting device may be 2.0V, and the ultraviolet and infrared light emitting devices may be used. The device can be 2.5V. Therefore, the driving voltages Vpp1-Vpp2 of the respective driving means may be driving voltages of light emitting devices to be connected to each other.

In this case, the PWM signal of the control unit 210 applied to the driving unit 310 and the output unit 320 may be the driving voltage Vcc of the control unit 210, and the driving unit 310 and the output unit 320 may be The driving voltage of the input Vcc level is converted into the driving voltage Vpp of the corresponding light emitting element.

The output means 310 converts the PWM signal of the Vpp level output from the driving means into a light emitting device driving power of an analog type, and includes a diode to prevent back EMF.

The current detector 240 detects a driving current applied to each corresponding light emitting device in the LED driver 230, and applies the current to the controller 210 to the controller 210 to store the 220 in the controller 210. The state of the light emitting device package 200 may be detected by comparing the reference current value of the light emitting device stored in the device and the actual driving current value of the light emitting device.

That is, the controller 210 compares the actual driving current values of the light emitting devices detected by the detection unit 240 with a reference value to determine whether the corresponding light emitting devices are normal or not. The input terminal of the detection unit 240 may be connected in parallel with any one terminal between both ends of the coil (coil) of the output means in the LED driver 230 as shown in FIG.

The input unit 250 may generate a key input signal for setting a plant and plant growth conditions for controlling growth in an operation control or a cultivation mode of the lighting apparatus according to an embodiment of the present invention.

The display unit 260 displays a menu and the like when setting the operation state and the cultivation mode of the lighting apparatus. The sensing unit 270 is an optical sensor, and detects the amount of ambient light in a facility or a room where an illumination device is located and transmits the amount of ambient light to the control unit 210. Then, the controller 210 may variably generate a signal for driving the light emitting device 200 according to the amount of ambient light.

The communication unit 280 performs a function of interfacing the communication function between the lighting device and the external device according to the embodiment of the present invention. Herein, the communication unit 280 may be a wired and / or wireless communication unit. Here, in the case of wired communication, the communication unit may be the same as that of RS-485. In the case of a wireless communication unit, the communication unit may be a Zigbee or a Bluetooth type communication unit.

In addition, the communication unit 280 may be connected to an external lighting server and the like to download data (cultivated plant type, cultivation period, cultivation conditions) for driving the LED combination package, and also for controlling the operation of the lighting device. Data can be downloaded, and information on the state of the lighting apparatus (plant cultivation situation, etc.) and operation abnormalities (information of the corresponding error in case of normal or error or error) can be uploaded. .

Looking at the operation of the intelligent plant cultivation lighting apparatus according to an embodiment of the present invention as described above, the light quantity data for each plant is stored in the storage unit 220, the control unit 210 is the input unit 250 or communication unit 280 The plant cultivation is controlled according to the user's selection. That is, after accessing the light quantity control information according to the type and growth stage of the plant selected by the user in the storage unit 220, the plant cultivation conditions are set. Thereafter, light emitting device driving data for controlling the light amount of each light emitting device of the LED combination package 200 is output to the LED driver 230 according to the plant cultivation conditions.

Table 4 below shows an example of light quality data required for plant-based cultivation.

Item unit rice Strawberry Lettuce tomato Cultivation period Work 100 90 30 90 PPFD (photon) μmolm²s¹ 800 300 200 600 Daily lighting time hour / day 12 16 16 12 Daily photosynthesis μmolm² / day 34.6 17.3 11.5 25.9 Required mineral quality (magnification) R (6), B (4) R, B,
IR, Y R, G, B, R, B,
IR, Y

As shown in Table 4, it can be seen that the growth period, growth stage, wavelength (light) required by the plant, and amount of light required vary depending on the type of plant. Such data can be obtained by experiments and then stored in a database in the storage unit 220. In addition, the optical quality as shown in Table 4 is stored in the storage unit 220 by database driving data for each wavelength (light emitting device) in order to control by time according to the cultivation step.

Therefore, the light quantity data for each plant are stored in a database in the storage unit 200, and the controller 210 generates a light emitting element driving signal that is parallax in order to adjust the light quantity of the corresponding light emitting device with the light amount of the selected mode. Output to the driver 230. Here, the light emitting device driving signal is a PWM signal, and the driving ratio (that is, the amount of light) of the light emitting device can be adjusted. That is, by adjusting the duty ratio of the PWM signal, it is possible to adjust the amount of current applied to the light emitting device, thereby controlling the amount of light of the light emitting device.

The light emitting device driving signal is a signal applied to each of the light emitting elements of the LED combination package 200 independently. When the LED combination package 200 has a structure as shown in FIG. Six light emitting element driving signals are generated independently. The light emitting device driving signal is databased according to the plant selected by the user and the growing season, and the controller 210 accesses the corresponding light emitting device driving data from the storage unit 220 according to the growth stage of the corresponding plant. A light emitting device driving signal for controlling the light amount of each light emitting device is generated in a corresponding growth step.

 The LED driver 230 is configured by the number of light emitting devices and includes the driving means 310 and the output means 320. The driving means 310 converts the light emitting device driving signal (PWM signal) applied from the control unit 210 to the driving power of the corresponding light emitting device, and the output means 320 is output from the driving means 310. The signal is converted into an analog signal (current) and applied to the corresponding light emitting device of the light emitting device. At this time, the output means 320 has an inrush current protection circuit in preparation for the instantaneous driving power when the light emitting device is turned on.

In addition, the LED driver 230 generates a light emitting device driving current capable of independently controlling the driving signals of the light emitting devices output from the controller 210 according to the growth stage, and thus, each of the light emitting devices 200 The light emitting devices are dimmed under the control of the controller 210 and the LED driver 230. That is, the LED combination package 200 determines the light emitting devices to be driven for each growth stage set according to the selected plant type and cultivation period, and is also dimmed according to the set amount of light.

In addition, a driving current applied to each light emitting device of the light emitting device 200 by the LED driver 230 is fed back to the detection unit 240. The detection unit 240 is a light emitting device driving signal (reference current data for driving the light emitting device: can be obtained by averaging PWM data) output from the control unit 210 and the drive current value applied to the actual light emitting device ( The LED driver 230 compares the value obtained by feeding back the driving current of the light emitting device of the light emitting device 200 to digital data to determine whether the LED is abnormal.

The detector 230 compares the output signal of the controller 210 with the signal output from the LED driver 230 to monitor at all times so as not to be overloaded, and detects an abnormal state of the light emitting device. Do this. In this case, when an abnormality occurs in the light emitting device due to the detection signal of the detector, the controller detects the abnormality in the actual driving current fed back through the light emitting device or when an overload current is applied to the light emitting device 200. Can be detected through.

The communication unit 280 configures a communication port (wireless or wired), receives information such as an external device, a control mode, an ON / OFF cycle, and the like through the communication port under the control of the controller 210, and operates the light emitting device module. Report the status and send the data to the external device when the event occurs to configure the information sharing system to solve the problem quickly.

In addition, the detector 270 detects an external light amount and applies the detected light amount data to the controller 210. Then, the controller 210 compares and analyzes the external light amount data applied by the detector 270 and the light emitting device driving data accessed by the storage 220. When the amount of light detected from the outside exceeds the required light amount, the controller 210 appropriately controls the corresponding light emitting device driving signal of the light emitting device 200.

7 is a flowchart illustrating an operating procedure of the lighting device for plant cultivation according to the embodiment of the present invention.

Referring to FIG. 7, a control method of a plant cultivation lighting apparatus according to the present invention includes a setting step (411 to 419) of setting a cultivation period according to a cultivated plant, a light quantity for each growth stage, a type and a light emitting time of a light emitting device to be driven; An illumination control step 421 for illuminating the plant according to the cultivation period, the light quantity and the type of the light emitting device driven in the setting steps 411 to 419, and the change request signal for the data set in the setting steps 411 to 419. A cultivation condition change determination step 423 for determining whether the application is approved and a cultivation completion steps 425 and 427 for indicating cultivation completion by determining whether the cultivation period set in the setting steps 411 to 419 have elapsed.

Herein, the setting steps 411 to 419 include an on state checking step 411 in which the control unit 210 checks whether the power of the lighting device is turned on, and the lighting device is turned on in the on state checking step 411. When the control unit 210 is set-up step 413 to perform the set-up operation and the cultivation determination step 415 to determine whether the cultivation state, the plant and the cultivation period to set the type and cultivation period of the plant Setting 417 and a cultivation condition setting step 419 in which the plant sets cultivation conditions according to the type and growing period.

The lighting control step 421 is a step of driving control the lighting device according to the conditions set in the setting step (411 ~ 419). Here, the lighting device has the configuration as shown in FIG. 5, and the light emitting device will be described on the assumption that it has the structure as shown in FIG. 2. In this case, the set-up operation may be a system initialization, a detector output access, a power check, a cultivation mode check, or the like.

The cultivation condition change determination step 423 is a step of determining whether a cultivation condition is changed during lighting control and continuing the cultivation or stopping the cultivation to store data to date.

The cultivation completion step (425 ~ 427) includes a cultivation completion determination step 425 for determining whether the cultivation of the plant is completed, and a cultivation result display step 427 for displaying the cultivation results.

In addition, the setting step (411 ~ 419, 431 ~ 437) of the present invention is a stop device for checking the cause of the stop and check the current cultivation state if the lighting device was stopped during the cultivation step 415 of the cultivation step 415 A cultivation state checking step 431, a cultivation decision step 433 for determining whether the cultivation command is continued, and a cultivation setting the cultivation condition when the cultivation command is continued in the continuation cultivation decision step 433 The condition setting step 435 and the result of the cultivation result display step 437 which displays the result of the cultivation so far if the cultivation stop command is applied in the continuation cultivation determination step 433.

In the cultivation determination step 415, when the setup is completed in the set-up step 413, it is determined whether the control unit 210 has been in the previous cultivation state. That is, the controller 210 checks whether the power is turned off by a user or an abnormal state in the previously cultivated state and then turned on. At this time, the control unit 210 stores information such as the type of plant being grown at the time of power-off, the growing period, and the result of the cultivation up to the storage unit 220.

If the plant and the cultivation period setting step 417 is not being cultivated in the cultivation determination step 415, the control unit 210 determines that a new cultivation mode is input and stores information of the plant to be input. In this case, the plant information that may be input may be a plant type group, a cultivation period, a cultivation selection light quantity, a cultivation selection light type, and the like. The plant information to be cultivated may be received through the input unit 250 or the communication unit 280. That is, when the user starts planting the plant, the user may select the plant type, the growing period, and the light quantity and the light type (light emitting device) to be grown through the external device or the input unit 250.

The planting condition setting step 419 is to output to the menu through the display unit 260 to set the lighting conditions of the plant according to the plant and the plant information input in the planting setting step 417 in the control unit 210 To control. Therefore, when the user selects the desired conditions through the input unit 250, the control unit 210 sets the cultivation plant and the growing period. In addition, when the cultivation information of the desired plant is received through the communication unit 280, the control unit 210 may set the plant and the cultivation period in the plant and cultivation setting period 417.

That is, according to the present invention, when the user selects a cultivated plant, the cultivation data of the selected cultivated plant is output, so that it is possible to set a cultivation condition suitable for growing conditions of the cultivated plant.

Alternatively, as described above, it is also possible to set cultivation conditions by selecting cultivated plants, but it is also preferable to set cultivation conditions of each plant by manual operation according to natural growth conditions such as weather or temperature. In brief, the controller 210 stores an input selection signal of a type, a cultivation period, and a light quantity of a cultivated plant by a manual operation input through the input unit 250 or the communication unit 280 and stores it in the storage unit. And control the LED combination package.

FIG. 8 is a flowchart illustrating an operation procedure of an example of the plant and growing period setting step of FIG. 7.

Referring to FIG. 8, the plant and cultivation period setting step 417 may include a plant type group display step 511 for displaying a kind group of cultivable plants and a plant type displayed in the plant type group display step 511. A selection determination step 513 for determining whether one is selected, a cultivation period display step 515 for displaying a cultivation period of the plant selected in the selection determination step 513, and the cultivation period display step 515 Cultivation period selection determination step 517 to determine the plant, and the loading step 519 for loading the cultivation conditions data of the plant selected in the selection determination step 517.

The plant type group display step 511 is a step in which the control unit 210 controls the display unit 260 to display a plant type group that can be grown. Here, the plant type group may be classified according to its characteristics, such as leafy plants such as lettuce, flowers such as roses, root plants such as potatoes, and plants edible fruits such as tomatoes. When the user selects a list of plant type groups output through the display unit 260, the controller 210 detects this and displays plants belonging to the corresponding plant type group stored in the storage unit 220.

The selection determination step 513 is a step in which the control unit 210 detects any one selection signal of the displayed plant group among the plant type group displayed in the plant type group display step.

The cultivation period display step 515 is a step in which the control unit 210 reads cultivation period information from the information of the plant selected in the selection determination step 513 and outputs it to the display unit 260. At this time, the display unit outputs the cultivation period from the stored cultivation information of each plant, the user can also set the cultivation period arbitrarily.

The selection judging step 517 is a step in which the control unit 210 determines whether a selection signal of the cultivation period is applied from the information output in the cultivation period display step 515. The controller determines which one of the cultivation periods of each plant output in the cultivation period display step 515 is selected. Here, the control unit 210 may set a basic cultivation period stored in the storage unit 220 when the selection signal of the cultivation period is not applied.

The loading step 519 is a step of receiving the selection signal of the cultivation period setting input in the selection determination step 517 and loading the cultivation condition information for the selected plant from the storage unit 220. The cultivation condition information loaded here is a cultivation condition of the selected plant, and includes information on a growth stage, light type, and light quantity.

When the cultivation period is set in this way, the controller 210 proceeds to the cultivation condition setting step 419.

In the cultivation condition setting step 419, the cultivation condition is set by the control unit 210 according to the information loaded from the storage unit 220. At this time, the cultivation conditions may be the growth step as described above, the light type and the amount of light in the growth step. That is, the selected plant has a plurality of growth stages, and in each growth stage, a light emitting device for lighting and a signal (ie, duty ratio of PWM signal) for driving the light emitting device are set.

The lighting control step 421 is a step of controlling the illumination of the LED combination package 200 by outputting a light emitting device driving signal to the LED driver 230 in the control unit 210. At this time, the control unit 210 generates a light emitting device driving signal at the light emitting element set in the corresponding growth stage of the plant, and the light emitting device driving signal is output as a PWM signal having a duty ratio determined by the amount of light. . That is, the controller 210 dims the selected light emitting devices of the light emitting device 200 in the lighting control step 421.

The cultivation condition change determination step 423 is a step of determining whether the cultivation condition is changed by the controller 210. Herein, the change of the cultivation condition means a state in which the change of the growth stage occurs and the amount of light and the kind of light must be changed. Therefore, the control unit 210 detects the change in the cultivation condition changing decision 423 and proceeds to the cultivation condition setting step 419 to select the light quantity and the light type of the next growth step.

The cultivation completion determination step 425 is the cultivation completion (that is, when the lighting control is completed in the last growth stage) when the cultivation conditions are not changed in the cultivation condition change determination step 423 It is the step of judging cognition.

As described above, the controller 210 repeats the cultivation condition setting step 419 to the cultivation completion determination step 425, while controlling the amount of light proportional to the growth rate of the selected plant (that is, changing the cultivation condition according to the growth step). Lighting control).

When the lighting control is finished during the cultivation period while the above operation is performed, that is, when the cultivation is completed, the control unit 210 displays on the display unit 260 that the cultivation is completed and controls the light control of the LED combination package. Maintain lighting with cultivation complete.

For example, look at the lighting control operation according to an embodiment of the present invention taking the case of the lettuce of the cultivated plant, the cultivation conditions of the lettuce as shown in Table 5 below.

Growth stage Cultivation period step Quantity of light Light type (ratio) Germination (Step 1) 4 days seed 40% B: 80%, R: 20% Germination (Step 2) 5 days Cotyledon 60% B: 50%, R: 50% Growth (stage 1) 5 days Main leaf 70% B: 30%, R: 60%, G = UV: 5% Growth (stage 2) 20 days Main leaf growth 100% B: 20%, R: 60%, Y = G = IR = UV = 5% Growth (3 stages) 1 day harvesting 60% B = R = 10%, G = Y = IR = UV = 20%

Referring to <Table 5>, the lettuce may be composed of five stages of growth stage germination stage 2 and growth stage 3, the cultivation period may be a total of 35 days. The amount of light refers to the total amount of light to be illuminated by each of the light emitting devices of the light emitting device 200. In this case, the type of light driven refers to the light emitting devices driven in the corresponding step. For example, in the first germination stage, the light amount of the light emitting device 200 becomes 40%, and the light emitting devices driven are blue and red light emitting devices. In this case, the blue and red light emitting devices are driven with 80% blue and red. This means that it runs at a rate of 20%.

In the case of <Table 5>, the control unit 210 sets the cultivation conditions of the first germination stage in the cultivation condition setting step 419, and the germination one stage of the germination stage for four days in the lighting control step 421. Lighting is controlled according to the amount of light and the type of light. After 4 days, the control unit 210 detects this in the cultivation condition change determination step 423 and sets the light quantity and the light type of the second germination step in the cultivation condition setting step 419.

In the lighting control step 421, the lighting of the second germination stage is controlled for five days by the control of the controller 210. Then, after 5 days, the controller 210 detects that the growth condition change step 423 has to enter the growth stage 1, and in the cultivation conditions (419) the growth conditions of the growth stage ( That is, after setting the light quantity and light type), the lighting control step 421 controls the lighting of the first stage of growth. After 5 days, the control unit 210 determines the cultivation conditions are changed in the cultivation condition change determination step 423 and enters the growth stage 2.

The control unit 210 performs the lighting of the second stage of growth in the lighting control step 421 for 20 days after setting the cultivation conditions of the second stage of growth in the cultivation condition setting step 419. After the 20 days have passed, the control unit 210 determines whether it is the third stage of growth, which is the final stage of growth in the cultivation completion determination stage 425.

Therefore, the control unit 210 displays the cultivation result in the cultivation result display step 427 when it is determined as the growth stage 3 in the cultivation completion determination step. At this time, the lighting control maintains the three stages of lighting until the end of the three stages of growth (the user can set manually at the end of the harvest).

When the power is turned off due to a power failure or other operation during the operation as described above, the control unit 210 stores the cultivation results (cultivation plants, growth stages, cultivation period, etc.) until the power off. Store in

In the cultivation state checking step 431, when the power is turned on after the power is turned off as described above, the storage unit 220 detects that the cultivation state is in the cultivation determination step 415 by the control unit 210. Identify the plants, growth stages and growing seasons that were previously grown.

The continued cultivation confirmation step 433 determines whether the selection signal for continued cultivation is applied in the cultivation state checking step. The continuous cultivation selection signal is input through the input unit 250 and applied to the control unit.

The cultivation condition setting step 435 is a cultivation while setting the cultivation conditions according to the growth step and the cultivation period identified in the continuous growing determination step 433 in the control unit 210 and performing the lighting control step 421 Resume operation.

In the cultivation result display step 437, when the end selection signal is applied in the continuous cultivation determination step 433 (or when there is no cultivation input for a predetermined time or more), the control unit 210 cultivates at the power-off time point. Displaying the result and ending the cultivation operation.

As described above, the lighting device for plant cultivation according to the embodiment of the present invention may generate light of various wavelengths by combining red light, blue light, green light, UV light, IR light, and the like. Accordingly, the lighting apparatus according to the embodiment of the present invention can control the amount of light by driving only the light source required for the growth of the plant according to the cultivated plant and growth stage, and to adjust the cultivated plant and cultivation conditions by menu type to facilitate selection by plant type. It is possible to provide a light emitting device lighting device for plant cultivation that can determine, and can control the optimal state of growth and growth, including the function of managing the plant plant air condition.

As described above, the lighting apparatus according to the embodiment of the present invention includes the agricultural high efficiency high output light emitting device 200. The light emitting device 200 may include a plurality of light emitting devices having a wavelength combination (assuming 6 light emitting devices in the embodiment of the present invention), and the light emitting devices may include one or more visible rays and one or more ratios. It can be composed of visible light. That is, the wavelength generated by the light emitting device 200 may selectively or simultaneously generate wavelengths in the visible light band and the non-visible light band according to the growth stage of the selected cultivated plant. In addition, specific wavelengths generated by the light emitting device 200 may be used as microbial suppression light and pest control light, so that the microorganisms may control the pest during the growth stage.

1A is a diagram showing a spectral structure of natural light (sunlight);

1B is a diagram showing the spectral characteristics of a general fluorescent lamp;

1C is a diagram showing spectral characteristics of a light emitting package according to an embodiment of the present invention;

Figure 2 is an exploded perspective view showing an example of an intelligent plant cultivation lighting apparatus according to the present invention,

Figure 3 is a perspective view showing a controller of the intelligent plant cultivation lighting apparatus according to the present invention,

4 is a control block diagram of an intelligent plant cultivation lighting apparatus according to the present invention

5 is a view for explaining the data stored in the storage unit in the intelligent plant cultivation lighting apparatus according to the present invention,

 6a and 6b is a view showing the configuration of the drive means in the intelligent plant cultivation lighting apparatus according to the present invention

7 is a flowchart illustrating a control method of an intelligent plant cultivation lighting apparatus of an embodiment according to the present invention;

8 is a flowchart illustrating an operation procedure for an example of setting a cultivation condition in a control method of an intelligent plant cultivation lighting apparatus of an embodiment according to the present invention.

Claims (17)

delete delete At least one non-visible light emitting device having infrared and ultraviolet wavelength bands, and an LED combination package for combining and emitting at least one light emitting device in visible light wavelength bands of red, blue, green, and yellow colors; Sensing unit for detecting the amount of ambient light, temperature, humidity and time; A storage unit for storing growth condition information including growth time, light quantity, wavelength band, temperature and humidity of each plant; The growth condition data including the growth time and the amount of light for each growing period of the plant stored in the storage unit by receiving the information of the growth time for each growing period of the plant stored in the storage unit and the ambient light quantity, temperature, humidity and time detection signal of the detection unit A control unit for selectively controlling the LED combination package on and off and light amount in comparison; An input unit configured to set plant growth conditions, growth periods, and light quantity ratios of respective light emitting devices in the LED combination package; And A communication unit connected to the Internet or a wired or wireless communication network; The storage unit is configured to store the growth data including the cultivation time of the previous cultivated plant and the currently cultivated plant and the type, time and light quantity information of the light emitting element to be driven during cultivation. The method of claim 3, wherein the lighting device Intelligent display device for growing plants further comprising a display unit for displaying the growth data stored in the storage unit and the data input by the input unit. The method of claim 4, wherein the lighting device Intelligent plant cultivation lighting apparatus further comprises an LED driving unit for emitting light by applying a driving power to each light emitting device of the LED combination package under the control of the controller. The method of claim 5, wherein the LED drive unit Driving means for outputting a light emitting element driving signal pulse-width modulated by a control signal applied from the controller; And output means for applying a power corresponding to the pulse width modulated light emitting device driving signal applied from the driving means to the driving device and preventing back electromotive force. According to claim 3, wherein the amount of light of the red light emitting device is intelligent plant cultivation lighting apparatus, characterized in that 40 to 70% of the total light amount (unit: umol / m ² ~ s) at the time of plant growth. The intelligent plant cultivation lighting apparatus according to claim 3, wherein the light quantity ratio of the blue light emitting device is 10 to 40% of the total light quantity (unit: umol / m ² s) during plant growth. According to claim 3, wherein the light quantity ratio of the green light emitting device is intelligent plant cultivation lighting apparatus, characterized in that 10 to 20% in the total light quantity (unit: umol / m ² ~ s) at the time of plant growth. 4. The intelligent plant cultivation lighting apparatus according to claim 3, wherein the light quantity ratio of the yellow light emitting device is 5 to 10% of the total light quantity (unit: umol / m ² s) at the time of plant growth. The method of claim 3, wherein the invisible light emitting device Intelligent plant cultivation lighting apparatus, characterized in that the ultraviolet light emitting device of 200nm ~ 410nm and infrared light emitting device of 700nm ~ 900nm, respectively. The intelligent plant cultivation lighting apparatus according to claim 11, wherein the light quantity ratio of the ultraviolet light emitting element is 5 to 10% of the total light quantity (unit: umol / m ² s) at the time of plant growth. The intelligent plant cultivation lighting apparatus according to claim 11, wherein the light quantity ratio of the infrared light emitting element is 10 to 20% of the total light quantity (unit: umol / m ² s) at the time of plant growth. In the control method of the intelligent plant cultivation lighting device for promoting the growth of plants, A setting step of setting a cultivation period according to the cultivated plant, the amount of light for each growth stage, and the type and emission time of the light emitting device driven; An illumination step of illuminating the plant according to the cultivation period set in the setting step, the amount of light and the type of the light emitting device to be driven; A cultivation condition change determining step of determining whether a change request signal for data set in the setting step is applied; And And a cultivation completion step of displaying cultivation completion by determining whether the cultivation period set in the setting step has elapsed. The method of claim 14, wherein the setting step A cultivation determination step of checking whether the lighting apparatus is being grown while the lighting apparatus is turned on;  A plant and a cultivation period setting step of setting a cultivation period of the cultivated plant and the target plant to be cultivated, if the lighting device is not being cultivated in the cultivation determination step; And And a cultivation condition setting step of setting a cultivation condition according to the type of plant and the cultivation period of the inputted plant. The method of claim 15, wherein the plant and cultivation period setting step A plant type group displaying step of displaying a kind group of cultivable plants; A selection judgment step of determining which one of the plants displayed in the plant type group display step is selected; A cultivation period display step of displaying a cultivation period of the plant selected in the selection judging step; A cultivation period selection judging step of determining whether a selection signal of a cultivation period is applied among the information output in the cultivation period display step; And And a loading step of loading the cultivation condition information of the plant selected in the selection plate step. 17. The method according to any one of claims 14 to 16, wherein at least one of the setting step or the cultivation condition changing step stops the control of the lighting apparatus by the set data when the manual operation selection signal is applied and stops the manual operation. The control method of the intelligent plant cultivation lighting apparatus, characterized in that the lighting device is operable in real time according to the control signal input by the.

Images