KR20120045721A - Real-time supplementary lighting control system by using a lux sensor inside a greenhouse - Google Patents

Abstract

PURPOSE: A real-time supplement control system is provided to promote the growth of crops by constantly maintaining an artificial light source using an illumination sensor and a timer. CONSTITUTION: A lighting device(200) emits light to crops. An illumination sensor measures indoor illumination in real time. An input device(400) receives a preset illumination value. A control device(300) controls the operation of the lighting device according to the measured illumination. A timer(500) controls the on/off of the lighting device.

Description

REAL-TIME SUPPLEMENTARY LIGHTING CONTROL SYSTEM BY USING A LUX SENSOR INSIDE A GREENHOUSE}

The present invention relates to a light control system, and more particularly, using an illuminance sensor that can maintain and control the constant day and night light intensity in the facility to maintain and promote crop growth in the light beam using artificial light sources in the facility. It relates to a real-time light control system in the facility.

In general, in the case of plant cultivated crops, the degree of growth is determined by the amount of sunlight that enters the facility, and the effect of light intensity has a great effect on the nutrient growth period in which the crops are actively grown. In the short seasons of nature such as spring, autumn, and winter, the artificial light sources such as incandescent lamps, light emitting diodes, metal halide lamps, and high-pressure sodium lamps are used to extend the working hours in the plant cultivation. Replenish your workday to help your crops grow.

However, in the facility cultivation, in addition to the lack of seasonal sunshine, the natural sun is short due to the decrease of solar incidence in the facility due to weather changes such as yellow dust, rainfall and snowfall during the day and multiple coatings of the facility for warming in winter facilities. In addition, the lack of daytime sunlight is an important factor that causes huge income damages to farmers in farming facilities due to reduced crop yields, poor pigmentation, poor fruiting, and delayed flowering. There is a situation.

Conventional light compensation methods for extending the natural length helped to grow crops by extending the length of the day, but there are limitations in solving the lack of sunshine due to the lack of sunlight in the facility due to weather changes during the day. have.

Accordingly, the present invention has been made in view of the above problems, and the problem to be solved by the present invention is to maintain and control the intensity of day and night constant light in the facility to maintain and promote crop growth in the light beam using artificial light source in the facility. It is to provide a real-time light control system.

The light control system according to an embodiment of the present invention is installed in a facility, the illumination device for irradiating light to the plant cultivation crops, an illuminance sensor for measuring the illuminance in the facility in real time, night light time from the user, daytime light time and setting It includes an input device for receiving an illumination value, and a control device for controlling the operation of the lighting device. The control device controls the operation of the lighting device in the night operation mode and the daytime operation mode, respectively, in response to the nighttime and daytime luminous time transmitted from the input device, and in the daytime operation mode is transmitted from the input device. The operation of the lighting apparatus is controlled by comparing the set illuminance value and the measured illuminance value measured by the illuminance sensor.

The control device turns on the lighting device when the measured illuminance value is lower than the set illuminance value in the daytime operation mode, and turns off the illuminating device when the measured illuminance value reaches the set illuminance value.

The light compensation control system may include a first timer for controlling the lighting and turning off time of the lighting apparatus in response to the night light keeping time in the night operation mode, and the measured illumination value and the set illumination value in the daytime operation mode. Further comprising a second timer for controlling the lighting and turning off time of the lighting device by comparison.

The control device controls to store at least one of the irradiation date, illumination in the facility, irradiation time, and the number of irradiation times of the lighting device in the storage device, and calculates an average illumination value irradiated in the facility for each day or time zone based on the storage device. have. The control device turns on the lighting device when the measured illuminance value is lower than the average illuminance value, and turns off the illuminating device when the measured illuminance value reaches the average illuminance value.

According to such a light control system, it can be used as a lighting device for extending the natural work in the light for facility cultivated crop growth, not only can control the night light, but also can control the light to solve the lack of sunshine during the day. In addition, it is easy to set the light compensation using the illumination sensor and timer, so that it can control the light intensity for the growth of facility-cultivated crops in real time all year by solving the lack of sunshine during the four seasons in addition to spring, autumn, and winter, which shorten the natural sun. .

In addition, since the user can arbitrarily set and control the light intensity of each crop, growth stage and time of the crop, it is possible to improve the light utilization efficiency of the plant-cultivated crops, and in particular, farmhouses using artificial light sources such as light emitting diodes. In addition to light intensity, light quality control is possible and energy saving effect can be expected according to light irradiation method.

1 is a block diagram showing a light control control system according to an embodiment of the present invention.
2 is a flowchart illustrating an operation process of a light control control system according to an exemplary embodiment of the present invention.
3 is a flowchart illustrating an operation process of a light control control system according to another exemplary embodiment of the present invention.
Figure 4 is a graph showing the results of performing a cut flower cultivation test in actual facilities.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present 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 this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and that one or more other features It should be understood that it does not exclude in advance the possibility of the presence or addition of numbers, steps, actions, components, parts or combinations thereof.

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

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 the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

1 is a block diagram showing a light control control system according to an embodiment of the present invention.

Referring to FIG. 1, the light control control system according to the present embodiment includes an illumination sensor 100, an illumination device 200, a control device 300, an input device 400, a timer 500, a storage device 600, and the like. The display device 700 is included.

The lighting device 200 irradiates light to crops grown in the facility. The facility in which the lighting device 200 is installed is to provide a suitable environment for the growth of the crop is planted therein, it may be installed on the ground. For example, the facility may include a plurality of supports installed on the ground, a plurality of frames disposed on the supports and connecting the supports to each other, and a cover part covering the frames. The cover part may be formed of a material, for example, vinyl or glass, which is transparent and is easily incident light. As a result, sunlight may enter the facility through the cover part, and crops grown in the facility may be grown using the sunlight that has entered the facility.

The lighting device 200 may be configured of, for example, an incandescent lamp, a light emitting diode, a metal halide lamp, a high pressure sodium lamp, or the like. The lighting device 200 may be installed in a plurality of spaced apart from each other at a predetermined interval on the top of the crop in order to easily irradiate the light generated by the lighting device 200 to the crop.

The illuminance sensor 100 is installed at least one in the facility to measure the illuminance in the facility. For example, the illuminance sensor 100 may be installed on the supports or the frames. The illuminance sensor 100 measures the illuminance of the sunlight incident into the facility, and transmits the measured illuminance value to the control device 300 to be described later.

The input device 400 receives a night light keeping time, a day light keeping time and a set illuminance value from the user and transmits it to the control device 300. For example, the input device 400 may include an up / down button, and may receive the night light time, the day light time and the set illumination value from the user through the up / down button. The night light keeping time is a time for extending the natural sun, for example, means a light keeping time of about 1 hour or more before sunrise and after sunset. The daytime supplementary time means the time required for supplementary light during the day, and the remaining time zone except the nightly supplementary light time can be regarded as the daytime supplementary time. The set illuminance value means the illuminance value required in the facility, and the illuminance value required for each type of crop grown in the facility, for each growth stage and time of the crop may vary, and thus the user is currently growing The set illuminance value may be input in consideration of the type of crop, the growth stage and time of the crop, and the like.

The control device 300 controls the operation of the lighting device 200 in the night operation mode and the daytime operation mode, respectively, in response to the night light retention time and daytime light retention time transmitted from the input device 400. That is, the control device 300 controls the lighting and turning off of the lighting device 200 for night supplementary light for extending the natural work in response to the night supplementary light time inputted through the input device 400. In addition, the control device 300 controls the lighting and turning off of the lighting device 200 for the daytime supplementation to compensate for the lack of daylight in response to the daytime supplementary time input through the input device 400. do. Particularly, in the daytime operation mode, the control device 300 turns on the illumination device 200 when the measured illuminance value of the facility measured by the illuminance sensor 100 is lower than the set illuminance value, and the measured illuminance When the value reaches the set illuminance value, the lighting device 200 is turned off.

The illuminance in the facility may not be easily maintained constant by the environment external to the facility. For example, when a weather change such as yellow sand, rainfall or snowfall occurs, the intensity of sunlight incident into the facility may be weakened, and thus the illumination in the facility may be reduced. Therefore, the illuminance in the facility is measured by the illuminance sensor 100 to maintain the illuminance in the facility at a level necessary for the growth of the crop, and compares the measured illuminance value and the set illuminance value to the illumination device ( By controlling the lighting and turning off of the light 200, it is possible to solve the lack of daylight and increase the light utilization efficiency of crops.

On the other hand, the light control system according to an embodiment of the present invention may include the timer 500 for controlling the operation time of the lighting device 200 in accordance with the control of the control device 300. The timer 500 may include a first timer that controls the lighting and turning off time of the lighting apparatus 200 in response to the night light keeping time in order to control the extended time in the night operation mode. In addition, the timer 500 compares the measured illuminance value measured by the illuminance sensor 100 with the set illuminance value input by the user in the daytime operation mode to control the illuminance in the facility in time. It may include a second timer for controlling the lighting and turning off of the lighting device 200 through.

The light control system may include the storage device 600 for storing various data input by a user, operation result data of the lighting device 200, data calculated by the control device 300, and the like. have. The storage device 600 stores the nighttime light keeping time, the daytime light keeping time, and the set illuminance value input through the input device 400 under the control of the control device 300. In addition, the storage device 600 stores, according to the control of the control device 300, the record of the irradiation date, the illumination in the facility, the irradiation time, the number of irradiation, and the like, which are the operation results of the lighting device 200. In addition, the storage device 600 may store data processed by the control device 300 and calculated data. The storage device 600 includes a setting content storage device for storing the setting data input by the user and a data storage device such as an SD card, a USB, etc., in which the operation result data of the lighting device 200 is stored and can be moved separately. can do.

When the measured illuminance value measured by the illuminance sensor 100 is input, the control device 300 starts the control of the illuminating device 200 according to time and illuminance to control the power switch of the illuminating device 200. It transmits a signal, and controls to store the operation result of the irradiation date of the illumination device 200, the illumination in the facility, the irradiation time, the number of irradiation, etc. in the storage device 600. In addition, the control device 300 calculates an average illuminance value for each day or time zone based on an operation result of the lighting device 200 stored in the storage device 600, and stores the average illuminance value in the storage device 600. To control. In addition, the control device 300 may be controlled to receive the temperature and humidity data in the facility from the temperature sensor and humidity sensor installed in the facility and to store it in the storage device 600.

On the other hand, the light control system is the display device 700 for displaying the measured illuminance value measured by the illuminance sensor 100 and the set illuminance value input by the user, night light time and daytime light time, etc. It may include.

2 is a flowchart illustrating an operation process of a light control control system according to an exemplary embodiment of the present invention.

1 and 2, when the light control control system starts to operate, the control device 300 determines whether the current time is night light keeping time (S100). As a result of the determination, when the current time is determined to be the night light keeping time, the control device 300 is operated in the night operation mode to turn on the lighting device 200 for a set time set to the night light keeping time (S110). For example, the night light keeping time is different for each farm, crop, but is set to approximately 1 hour or more before sunrise and after sunset, accordingly, the control device 300 is set to night light holding time at night without sunlight Prolong the natural time of day.

On the other hand, if it is determined that the current time is not the night light holding time, the control device 300 determines whether the current time is the day light holding time (S120). As a result of the determination, if it is determined that the current time is not the daytime light keeping time, the control device 300 turns off the lighting device 200 or keeps it off (S130).

On the contrary, if it is determined that the current time is the daylight maintenance time, the control device 300 operates in the daytime operation mode, and the measured illuminance value measured by the illuminance sensor 100 and the set illuminance set by the user Compare the values (S140). When the measured illuminance value is lower than the set illuminance value as a result of the comparison of the illuminance value, the control device 300 transmits a control signal to the power switch of the illuminating device 200 to turn on the illuminating device 200 ( S150). In addition, the control device 300 continuously checks the measured illuminance value measured by the illuminance sensor 100, and when the measured illuminance value reaches the set illuminance value, the power of the lighting apparatus 200 is maintained. The lighting device 200 is turned off by transmitting a control signal to a switch (S160).

As such, the control device 300 operates the lighting device 200 until the measured illuminance value reaches the set illuminance value input by the user, thereby preventing the effect of lack of sunshine due to a change in the external environment during the day. Instead, it is possible to promote the growth of facility-cultivated crops by keeping the illumination in the facility at a level suitable for the growth of crops. In addition, since the lighting device 200 is operated only when the measured illuminance value is smaller than the set illuminance value, it is possible to improve the economics by saving the cost and energy required to operate the lighting device 200.

3 is a flowchart illustrating an operation process of a light control control system according to another exemplary embodiment of the present invention.

1 and 3, when the measured illuminance value exceeds the set illuminance value, the control device 300 transmits a control signal to a power switch of the illumination device 200 to provide the illumination device 200. Turn off (S160). Thereafter, the control device 300 compares the measured illuminance value and the average illuminance value calculated using the measured illuminance value (S200). As a result of the comparison, when the measured illuminance value is lower than the average illuminance value, the control device 300 transmits a control signal to a power switch of the illumination device 200 to turn on the illumination device 200 (S210). .

The average illuminance value is a value calculated using the measured illuminance value measured by the illuminance sensor 100 and is based on information such as the irradiation date of the illumination device 200, the illuminance in the facility, the irradiation time and the number of irradiation times. The average roughness value for each day or time zone. For example, the first measured illuminance value measured from 6 am to 9 am in the illuminance sensor 100 is 10,000 lux, and the second measured illuminance value measured from 9 am to 12 pm is 11,000 lux If the third measured illuminance value measured from 12 pm to 3 pm is 13,000 lux and the fourth measured illuminance value measured from 3 pm to 6 pm is 11,000 lux, the average illuminance value is the first measured illuminance It can be calculated by adding the value from the value to the fourth measured roughness value and dividing by 4, that is, 11,250 lux.

On the other hand, if the measured illuminance value reaches the average illuminance value, the control device 300 transmits a control signal to the power switch of the illumination device 200 to turn off the illumination device 200 (S220).

In this manner, in addition to the set illuminance value input by the user, the average illuminance value stored as the average illuminance average data is compared with the measured illuminance value to control the operation of the lighting device 200, thereby allowing Precise illuminance control is possible, thereby providing a cultivation environment optimized for plant cultivation crops.

Figure 4 is a graph showing the results of performing a cut flower cultivation test in actual facilities.

Referring to FIG. 4, as a result of comparing daytime beaming using the above-described light beam control system with the case of not performing daylight beaming, when daylight beaming is performed, compared to the case where daylight beaming is not performed. It was confirmed that the cut length is increased by about 10 cm or more, and through this, it can be confirmed that the growth of facility-cultivated crops is promoted when daytime beaming is performed using the beam control system according to the present invention.

On the other hand, the light beam control system according to the present embodiment can control not only the light intensity in the facility, but also the light quality through the control device 300 when the lighting device 200 includes a new material light source such as a light emitting diode. .

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 apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Therefore, the above description and the drawings below should be construed as illustrating the present invention, not limiting the technical spirit of the present invention.

100: light sensor 200: lighting device
300: control device 400: input device
500: timer 600: storage device
700: display device

Claims (5)

An illumination device installed in the facility to irradiate light on the plant cultivation crops;
An illuminance sensor measuring illuminance in the facility in real time;
An input device for receiving a night light keeping time, a day light keeping time, and a set illuminance value from a user; And
The operation of the lighting apparatus is controlled in the night operation mode and the daytime operation mode, respectively, in response to the night light keeping time and the day light keeping time transmitted from the input device, and the set illuminance value transmitted from the input device in the day operation mode. And a control device for controlling the operation of the lighting device by comparing the measured illuminance value measured by the illuminance sensor. The method of claim 1,
The control device turns on the lighting device when the measured illuminance value is lower than the set illuminance value in the daytime operation mode, and turns off the illuminating device when the measured illuminance value reaches the set illuminance value. Light control system. The method of claim 1,
A first timer configured to control a lighting time and an off time of the lighting apparatus in response to the night light keeping time in the night operation mode; And
And a second timer in the daytime operation mode to control the lighting and turning off time of the lighting apparatus by comparing the measured illuminance value with the set illuminance value. The method of claim 1,
The control device controls to store at least one of the irradiation date of the lighting device, the illumination in the facility, the irradiation time, and the number of irradiation times in the storage device, and calculates an average illumination value irradiated in the facility for each day or time zone based on this. The light control system characterized in that. The method of claim 4, wherein
And the control device turns on the illuminating device when the measured illuminance value is lower than the average illuminance value, and turns off the illuminating device when the measured illuminance value reaches the average illuminance value.

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