KR20130077636A - Plant cultivation smart led illuminating system - Google Patents

Abstract

PURPOSE: A smart LED lighting apparatus for plant cultivation is provided to control optical environment in an optimum condition during a cultivation process, and to maximize the optical usage efficiency by the growth of plants. CONSTITUTION: A light source unit (100) includes an LED module (110) and an LED controller (120). A power supply connector (200) is capable of supplying power and transmitting data through power line communications. A sensor (300) detects surrounding temperature, carbon dioxide density, humidity, light quantity, and photosynthesis photon flux density (PPFD) of surrounding optical environment. A memory unit (400) stores growth information including sunrise and sunset time information by region and season, growth stages and kinds of plants, light quantity, temperature, carbon dioxide density, humidity, and PPFD. A controller (500) compares surrounding environment data detected from the sensor with the information stored in the memory unit for controlling the light quantity of the light source unit. [Reference numerals] (110) LED module; (120) LED controller; (210) First power connector; (220) Second power connector; (310) Light quantity sensor; (320) Carbon dioxide sensor; (330) Humidity sensor; (340) Temperature sensor; (400) Memory unit; (500) Controller; (AA) External PC; (BB) External power source

Description

Plant cultivation smart LED illuminating system

The present invention relates to an LED lighting device for plant cultivation, and more particularly, based on a microcomputer, power line communication device, environmental sensor, and light output profile database inputted in a memory, the type of crop, growth stage, and light. It relates to a plant cultivation smart LED lighting device that is automatically adjusted according to the fuzzy control algorithm to effectively control the output and light irradiation pattern of the plant cultivation LED light according to environmental changes.

It is well known that the wavelength of light in a specific band affects plant cultivation. For example, blue light (450 nm) inhibits growth and promotes flower bud formation, while blue light (500 nm) is absorbed by carotenoid photoreceptors to protect the photosynthetic reaction system. And red light (660nm) stimulates the growth of leaves and stems to produce chlorophyll and act on photosynthesis. In addition, infrared light (730 nm) plays an important role in the activity and loss of phytochrome photoreceptors involved in germination and axial growth. Acts on receptors and is involved in substance synthesis and physiological function

As described above, each plant has various forms of using light according to its type and growth stage, and by controlling the light environment of the plant, it is possible to control the growth pattern of the plant, the deletion of flowering, and the synthesis of functional substances. However, plants have a completely different form of light use than humans, and most lighting devices are manufactured based on the human sense of view, and thus are not effective for plant cultivation.

As described above, in the past, incandescent lamps, fluorescent lamps, sodium, etc. were used to compensate for the insufficient amount of light or to provide suitable growth conditions for flowering control, coloring, and the like. When the light is mixed and the wavelength of the specific band is needed, the unnecessary wavelength is irradiated together.

However, LEDs can selectively emit only the wavelengths needed for plant cultivation among red, blue, green, yellow, infrared and ultraviolet light, resulting in lower power consumption, higher energy efficiency, and longer lifespan than conventional light sources such as fluorescent and incandescent bulbs. This has a very long advantage.

Because of these characteristics, the use of LED as a plant cultivating lighting device is greatly expanded. In particular, it is expected that the use of power-efficient LED lighting devices will be gradually expanded in large facility cultivation complexes.

For example, the Republic of Korea Patent Publication No. 10-2011-0092151 (Application No .: 10-2010-0011657) discloses a LED lighting management system for plant cultivation, LED lighting device to the command or reservation program by communication It is known to drive according to, and to detect the brightness of each wavelength by a color sensor to maintain the brightness of the lighting device equal to a predetermined value.

However, the color sensor used in the LED lighting management system for plant cultivation is a sensor that outputs the red, blue, and green degree of visible light as an electrical signal proportional to the brightness of the color. IR) and ultraviolet light (UV) are measured and cannot be used as control information.

In addition, since electric signals proportional to brightness are adapted to human visibility, there is a large difference from the useful photon flux density felt by plants. In particular, infrared (UV) and ultraviolet (UV) light cannot be perceived by color sensors or the human eye, but plants are sensitive to light at these wavelengths, but conventional techniques measure and control light at these wavelengths. It has a problem that is difficult to do.

In addition, the prior art has a problem that it is difficult to reflect the change of the sunrise and sunset time according to the season, the light environment according to the region and altitude in the lighting control by constantly controlling the brightness of the lamp according to a preset reservation program.

In addition, the conventional technology sets the lighting range on the assumption that the plant is fully grown, so that most of the light irradiated from the lamps illuminates the place where the plant is not grown while the plant is growing in a young state. Have.

The present invention is to solve the above problems, the problem to be solved by the present invention is to control the light intensity based on human visibility in controlling the LED light, instead of feeding back to the control variable, the light utilization characteristics of the plant Photoynthetic Photon Flux Density (PPFD) based on the photosynthetic photon Flux Density (PPFD) is measured so that it can be fed back to the control parameters of the LED light. According to the purpose of cultivation, it is possible to control the light environment optimally during the cultivation process by actively responding to the external light environment to effectively use the electrical characteristics of the LED for crop cultivation, and to change the light irradiation range according to the growth of plants It is to provide an LED lighting device for smart plant cultivation that can maximize the use efficiency.

Smart LED lighting device for plant cultivation according to the present invention comprises a light source unit including an LED module and an LED controller for controlling the LED module; A power connection unit capable of supplying power and transmitting data through power line communication; A detector for detecting ambient temperature, CO 2 concentration, humidity, light quantity, photosynthetic photon flux density (PPFD) of the ambient light environment; A memory unit for storing growth information including sunrise and sunset time information according to regions and seasons, crop types and growth stages, light quantity, temperature, CO2 concentration, humidity, and photosynthetic photon flux density (PPFD); A control unit which controls the amount of light in the light source unit according to the change of the surrounding environment by comparing the surrounding environment data detected by the sensing unit with information stored in the memory unit; It includes a dimming angle control device for controlling the irradiation range of the light source according to the growth of the crop.

The light emitting device of the LED module is characterized in that the ratio of the red light emitting device, blue light emitting device, infrared light emitting device, ultraviolet light emitting device is arranged in a ratio of 6: 3: 0.5: 0.5.

The dimming angle adjusting device includes a body portion formed such that two LED modules are arranged in a V shape; First through grooves formed in a vertical direction at both ends of the body portion; And second through-grooves formed in a horizontal direction at both end side surfaces of the body portion; first and second protrusions formed at both ends of the LED module and first through-holes and second through-holes at both ends of the body portion. When the first protrusion of the LED module coupled to the groove and arranged in a 'V' shape is moved along the vertical direction of the first through groove, the second protrusion inserted into the second through groove is horizontal along the second through groove. It is characterized in that by adjusting the dimming angle so that the arrangement of the LED module is changed to the '-' shape by moving in the direction.

The dimming angle control device is characterized in that the control range and the motor can automatically control the irradiation range of the light according to the growth of the crop.

The power connection unit includes a first power connection unit for connecting power from the outside and a second power connection unit connected in parallel with the main power connection unit to connect a plurality of LED lighting device using a second type of power supply chain light fixture It is characterized by having an extension structure.

The memory unit may be connected to an external PC or a database by power line communication to receive growth data and environmental data of a plant.

The control unit controls the light source unit to generate the maximum amount of light according to the type of plant and the surrounding environment according to the photosynthetic maximum efficiency table and the photosynthetic effective photon flux density (PPFD) measurement value according to ambient temperature, humidity, and CO 2 concentration. Characterized in that.

When the control unit emits light of one kind of light emitting element at a constant on / off interval, the other kind of light emitting element may be irradiated to be on when the other light emitting element is turned off.

The control unit may calculate a deviation between the sunrise time and the sunset time according to the region stored in the memory, the altitude, the location of the region, and the time according to the season from the external PC or the database, as necessary, and reflect the deviation in the light beam profile.

The smart LED lighting device for plant cultivation has the effect of effectively controlling the growth and flowering of crops through the light environment control to contribute to the improvement of agricultural income by controlling the production and shipping of high quality agricultural products.

In addition, high light conversion efficiency, optional spectrum configuration, and control of the flashing cycle can reduce power costs by more than 60%.

In addition, it can reduce the management cost with the light lifespan of about 10 times or more and intelligent dimming algorithm that can automatically control by environmental recognition through the sensor can significantly reduce the management effort.

1 is a perspective view showing an external configuration of a smart LED lighting device for plant growth according to an embodiment of the present invention.
Figure 2 is a block diagram illustrating a smart LED lighting device for plant growth according to an embodiment of the present invention.
Figure 3 is a right side view for explaining the dimming control device of the plant-cultivated smart LED lighting apparatus according to an embodiment of the present invention.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

1 is a perspective view showing an external configuration of a smart LED lighting device for plant growth according to an embodiment of the present invention, Figure 2 is a block diagram illustrating a smart LED lighting device for plant growth according to an embodiment of the present invention, Figure 3 is a right side view for explaining the dimming control device of the plant-cultivated smart LED lighting apparatus according to an embodiment of the present invention.

1 to 2, in one embodiment of the present invention plant smart LED lighting device, the LED module 110 and the LED controller 120 is equipped with a light source unit 100, the power supply through power line communication And a power connection unit 200 capable of data transmission, a sensing unit 300 for detecting ambient light quantity, temperature, CO2 concentration, humidity, and photosynthetic effective photon flux density (PPFD), types of crops, growth stage, light quantity, And a memory unit 400 that stores growth information including temperature, CO 2 concentration, and humidity, and a controller 500 that adjusts the light amount of the light source unit according to the change of the information data and the surrounding environment stored in the memory unit. .

The component is formed inside the lamp body to constitute one lighting device.

The light source unit 100 is composed of the LED module 110 and the LED controller 120, the light emitting device of the LED module 110 is a plurality of light emitting devices of different wavelengths are arranged at a constant ratio in a certain area. For example, a red light emitting device, a blue light emitting device, an infrared light emitting device, and an ultraviolet light emitting device may be provided in a predetermined area so that the ratio is arranged at a ratio of 6: 3: 0.5: 0.5, and the arrangement area is repeated one by one. By configuring the LED module, the amount of light of the required wavelength can be adjusted. However, the LED module 110 may be manufactured by adding light emitting devices having different wavelengths as needed, and the ratio may be freely adjusted as necessary. In addition, the arrangement area of the light emitting element may use a rectangular or circular area as necessary.

On the other hand, the LED module 110 by using the LED module consisting of only one light emitting element in one row LED module to improve the efficiency of the production of the LED module 110, and the efficiency when controlling the LED module 110 It can increase. In addition, the ratio of the light emitting devices may be adjusted by adjusting the number of light emitting devices of the LED module 110. In the case of using such a single-line LED module, it is convenient to produce the module, and in order to control the amount of light, it is advantageous to control the amount of light because only one row of LED modules using one type of light emitting device is controlled.

The LED controller 120 receives the light quantity control signal from the controller 500 to control the light amount by turning on and off the light emitting device of the LED module 110.

Meanwhile, the light source unit 100 may be combined with a dimming angle adjusting device 130 for adjusting the dimming angle of the LED module 100. The dimming angle adjusting device 130 has a body portion 133 formed so that the two LED modules are arranged in a 'V' shape, and a first through groove formed in a vertical direction at both end centers of the body portion 133. 131 and the second through hole 132 formed in the horizontal direction at both end side portions of the body portion 133 are formed.

The LED module 110 has a first protrusion 111 and a second protrusion 112 are formed at both ends to be fitted into the first through hole 131 and the second through hole 132, respectively. have.

The first protrusion 111 and the second protrusion 112 are fitted into the first through hole 131 and the second through hole 132 at both ends of the body 133. At this time, as shown in (a) of FIG. 4, when the first protrusion 111 is coupled to be positioned below the first through hole 131, the two LED modules 110 are arranged in a 'V' shape. Then, as shown in (b) of FIG. 4, when the first protrusion 111 of the LED module is moved along the vertical direction of the first through hole 131, the second protrusion 112 inserted into the second through hole 132 is formed. ) Is naturally moved along the second through hole 132 in the horizontal direction, the arrangement of the LED module 110 is a '-' shaped arrangement. When adjusted as described above, the dimming angle is different when the 'V' form and the '-' form.

On the other hand, the dimming angle control device 131 can be automatically controlled by a motor, the control of the operation and dimming angle of the motor can also be controlled by the controller 500.

Looking at the case where there is a need to adjust the dimming angle as described above through the embodiment as follows.

Before the plants to be grown grow many, the height of the plants is small so that even if the dimming angle of the light source is narrowed, the plants can receive all the light. Therefore, at this time, by adjusting the dimming angle to suit the area of the plant cultivation house, there is no light leaking to the outside to prevent waste of energy. However, as the plant continues to grow, the plants at the end of the cultivation house are out of control. At this time, by using the dimming angle control device to widen the dimming angle of light so that all plants can receive light. For this reason, when a lighting device with a fixed dimming angle is used, when the plant grows, and the light is illuminated at a wide dimming angle from the beginning, the amount of light leaking to the outside when the plant is small wastes energy. There is an effect that can solve the problem.

The power connection unit 200 is to be connected to the external power source to supply power to the light source unit 100 and the control unit 500. In particular, the power line communication can be used to transmit data at the same time as supplying power, thereby eliminating the inconvenience of connecting and using a communication line separately.

Meanwhile, the power connection unit 200 includes a first power connection unit 210 for connecting power input from the outside, and a second power connection unit 220 that is internally connected in parallel with the main power connection unit. This is to connect a plurality of LED lighting device to have a chain-type lamp extension structure by connecting to the first power connector of the other LED lighting device using the second power connector 220. For example, when a plurality of lighting devices are to be connected and used, an external power source is connected to the first power connection unit of the first lighting device, and the second power connection unit and the first power connection unit of the second lighting device are connected to each other. Will be supplied. This is different from the conventional method of drawing power to each lighting device from a single power line, which is convenient for connecting and releasing power, which is convenient for installation of lighting devices.

The detection unit 300 detects ambient environment data such as ambient light quantity, CO 2 concentration, humidity, and temperature, and detects the light quantity sensor 310, the carbon dioxide sensor 320, the humidity sensor 330, and the temperature sensor 340. Include. Using the ambient light quantity, CO2 concentration, humidity, and temperature data detected by the sensor of the sensing unit 300 to calculate the photosynthetic flux photon flux density (PPFD), or immediately measure and readjust the signal to the required amount of light LED controller ( 120 to adjust the amount of light to match the current environment. That is, the optimum amount of light is analyzed and calculated according to the change of the current environment and the type of plant, and then the amount of light is controlled accordingly.

The memory unit 400 stores data for driving light emitting devices in each growth stage of the plant. That is, the memory unit 400 is a kind of plants, the growth period of the plants (growth stage), flowering and fruiting, the synthesis of functional materials and the light type for driving the light emitting elements for each of the above conditions (in the corresponding growing period Light emitting elements to be driven) and the light quantity of the corresponding light emitting element. In addition, the memory unit 400 is a cultivated plant type data, plants and light (wavelength) response data, required light quantity and photosynthetic effective photon flux density (PPFD) data for each plant type, growth rate data for each plant type, cultivation conditions (temperature , Humidity, natural light, nutrient solution) and growth rate data.

Meanwhile, the memory unit 400 may further receive and store sunrise time and sunset time according to a region from an external PC or a database, as necessary, and the sunrise time and sunset time may correspond to an altitude, a location, and a season. The deviation is calculated by the control unit and reflected in the light beam profile.

The memory unit 400 is connected to an external PC or a database by power line communication, and receives and stores growth data and environmental data of a plant, thereby allowing for peripheral purposes according to other purposes such as plant growth, flowering and fruiting, and synthesis of functional substances. Can receive and store data on environment elements.

The control unit 500 refers to the maximum efficiency according to the photosynthesis maximum efficiency table referring to the growth data of the plant stored in the memory unit 400 and the ambient temperature, humidity, and CO 2 concentration measured by the detection unit 300. To control the light source unit 100 to generate a light amount.

That is, the photosynthetic effective photon flux density (PPFD) is measured using the surrounding environment data sensed by the sensing unit 300, and the ambient environmental data and the photon flux density measurement amount are compared with the information stored in the memory unit to change the change. Accordingly, the light amount of the light source unit is controlled. The photosynthetic effective photon flux density (PPFD) represents the visibility of a plant and indicates a unit on which the plant receives light. Unlike plants, plants receive light so that the amount of LED light can be adjusted to meet plant standards.

The degree of photosynthesis according to the ambient temperature, the ambient CO2 concentration, and the amount of light does not increase even if the amount of light is increased between the constant temperature or the constant CO2 concentration. Therefore, if the temperature is increased or the CO2 concentration is increased, thereby increasing the amount of light linearly, photosynthetic efficiency is inferior to the amount of light. Therefore, if you examine the amount of light that can produce the maximum efficiency according to the surrounding environment (temperature, CO2 concentration, humidity, external light quantity) by referring to the data on photosynthesis degree, you can get the maximum efficiency in crop cultivation without wasting power. It is.

On the other hand, the control unit 500 generates a pulse width modulation (PWM) signal whose pulse width is varied according to the driving light quantity of the light emitting device in order to control the LED module 1-10. The PWM signal is transmitted to the LED controller 120 is converted into a signal that can be turned on / off the light emitting device to periodically turn on / off the light emitting device of the LED module 100 and to control the amount of light of the light emitting device.

On the other hand, the PWM control is a non-linearity of the dimming intensity by the duty ratio control when the dimming intensity is adjusted by the duty ratio control to solve the problem of light control resolution and precision degradation LED controller 120 receives the PWM control signal LED The problem can be solved by directly controlling the amount of light in the module.

Meanwhile, the controller 500 may minimize heat generation and minimize power capacity by using a multi-band LED alternating irradiation method in controlling the amount of light of various light emitting devices. In the multi-band LED alternating irradiation method, when one type of light emitting device emits light at a constant on / off interval, the other type of light emitting device emits light so as to be turned on when the other light emitting device is turned off. For example, assuming that the red light emitting element is turned on / off by a certain duty ratio, the blue light emitting element is controlled to be turned on during the time when the red light emitting element is turned off. In this way, it is possible to prevent the concentration of power by controlling the light emitting devices to not overlap on time, thereby minimizing heat generation and minimizing power capacity.

Again, referring to Figures 1 to 3 look at the operation and effect of the plant LED smart plant lighting apparatus according to an embodiment according to the present invention.

First of all, a smart LED lighting device for plant cultivation is connected by using a daisy chain-type light extension structure to connect a plurality of plants, and then enter the data according to the growth stage by judging the growth stage of the plant. The data is input to the memory unit 400 through power line communication, and the type of data may be a kind of plant, a cultivation period, a cultivation condition, and the like. The control unit 500 may be a smart LED module for plant cultivation based on the input data. 110).

When the cultivation of the plant starts, the sensing unit 300 continuously measures the change in the surrounding environment, and according to the measured value, the control unit 500 sends a control signal to the LED controller 120 to adjust the amount of light. For example, in the case of light quantity control for photosynthesis, the maximum photosynthesis amount is changed by ambient light quantity, temperature, humidity, and CO2 concentration, so that photosynthesis with maximum efficiency can be performed according to ambient light quantity, temperature, humidity, and CO2 concentration. The amount of light is controlled to compensate for the appropriate amount of light. In addition, the control unit 500 may adjust the amount of light of the LED to maintain the optimum amount of photosynthesis according to the type of plants using the photosynthetic effective photon flux density (PPFD) measured by the sensing unit 300.

At this time, in order to minimize the heat generation and power capacity in controlling the light quantity of the LED uses a multi-band LED alternating irradiation method. Plants can feel that they are receiving continuous light even if a certain amount of light is not applied continuously. By using this, LEDs can be turned on and off at regular frequency intervals to reduce the power efficiency of the LEDs. However, if all LED modules are temporarily turned on / off, the LED module generates heat and power needs to be temporarily applied, thereby increasing power consumption.

In order to solve this problem, the multi-band LED alternating irradiation method emits light of one type of light emitting element at a constant on / off interval, and the other type of light emitting element is turned on when the other light emitting element is turned off. To intersect. For example, assuming that the red light emitting element is turned on / off by a certain duty ratio, the blue light emitting element changes the viewpoint so as to be turned on during the time when the red light emitting element is turned off. In this way, it is possible to prevent the concentration of power by controlling the light emitting devices to not overlap on time, thereby minimizing heat generation and minimizing power capacity.

On the other hand, when cultivating the plant to adjust the dimming angle using the dimming angle adjusting device 130 so that the plants receive the maximum amount of light without light leaking to the outside, the dimming angle adjusting device (as the plant grows) 130) to adjust the dimming angle to obtain the maximum efficiency.

In another embodiment, in the case of precursor cultivation that changes the timing of flowering and fruiting of crops, a night-break method is used in which the plant recognizes the night as a day by lighting, wherein the memory unit includes a region and a season. The sunset time and sunrise time information and the altitude of the current area are stored. The controller 500 checks the sunset time and the sunrise time information, calculates the change time of the sunrise time and the sunset time according to the altitude and the season, and controls accordingly.

On the other hand, in the case of precursor cultivation, the crop is constantly lit during the night to recognize the night as a day after receiving a certain time or light. However, if the light is only received for 2-3 hours after the start of the night, there is no big difference from the case of continuously generating light during the night even if there is no light thereafter. In order to save power by controlling the lighting off.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: light source unit 110: LED module
111: first protrusion 112: second protrusion
120: LED controller 130: dimming angle control device
131: first through groove 132: second through groove
133: body 200: power connection
210: first power connection portion 220: second power connection portion
300: detection unit 310: light amount sensor
320: carbon dioxide sensor 330: humidity sensor
340: temperature sensor 400: memory
500:

Claims (9)

A light source unit including an LED module and an LED controller;
A power connection unit capable of supplying power and transmitting data through power line communication;
A detector for detecting ambient temperature, CO 2 concentration, humidity, light quantity, photosynthetic photon flux density (PPFD) of the ambient light environment;
A memory unit for storing growth information including sunrise and sunset time information according to regions and seasons, crop types and growth stages, light quantity, temperature, CO2 concentration, humidity, and photosynthetic photon flux density (PPFD);
A control unit which controls the amount of light in the light source unit according to the change of the surrounding environment by comparing the surrounding environment data detected by the sensing unit with information stored in the memory unit; And
Dimming angle control device for controlling the irradiation range of the light source according to the growth of the crop. The method of claim 1,
As the light emitting device of the LED module, a red light emitting device, a blue light emitting device, an infrared light emitting device, and an ultraviolet light emitting device are used, and the planting ratio of smart plant lighting is characterized in that the arrangement ratio is 6: 3: 0.5: 0.5. Device. The method of claim 1,
The dimming angle adjusting device includes a body portion formed such that two LED modules are arranged in a V shape;
First through grooves formed in a vertical direction at both ends of the body portion; And
Second through grooves formed in a horizontal direction on both end side portions of the body portion;
The first and second protrusions formed at both ends of the LED module are coupled to the first through holes and the second through holes at both ends of the body portion, and the first protrusions of the LED module are arranged in a 'V' shape. When moving along the vertical direction of the first through groove, the second projection inserted into the second through groove moves horizontally along the second through groove, and then adjusts the dimming angle so that the arrangement of the LED module is changed to a '-' shape. Smart LED lighting device for plant cultivation characterized in that it can be. The method of claim 3, wherein
The dimming angle control device is a smart LED lighting device for plant cultivation, characterized in that the control range and the motor can automatically control the irradiation range of the light according to the growth of the crop. The method of claim 1,
The power connection unit includes a first power connection unit for connecting power from the outside and a second power connection unit connected in parallel with the main power connection unit to connect a plurality of LED lighting device using a second type of power supply chain light fixture Smart LED lighting device for plant cultivation, characterized in that to have an extended structure. The method of claim 1,
The memory unit is a smart LED lighting device for plant cultivation, characterized in that connected to the external PC or database by power line communication to receive the growth data and environmental data of the plant. The method of claim 1,
The control unit compares the data stored in the memory unit with the amount of light, temperature, CO 2 concentration, humidity data and photosynthetic effective photon flux density (PPFD) detected by the sensing unit, and re-adjusts the signal to an appropriate amount of light. Smart LED lighting device for plant cultivation, characterized in that by transmitting to the controller to adjust the amount of light according to the current environment. The method of claim 1,
When the control unit emits light of one type of light by a constant on / off interval, the other type of light emitting device uses an alternating irradiation method to irradiate the light to turn on when the other light emitting device is turned off. Smart LED lighting device for planting. The method of claim 1,
The control unit calculates the deviation of the sunrise time and sunset time according to the area stored in the memory from the external PC or database, and the time according to the altitude and location, the season and reflects in the light beam profile as necessary LED lighting equipment.

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