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KR-20260066521-A - SYSTEM FOR PLANT CULTIVATION AND METHOD THEREOF

KR20260066521AKR 20260066521 AKR20260066521 AKR 20260066521AKR-20260066521-A

Abstract

A plant cultivation system and a method thereof are disclosed. A plant cultivation system according to one aspect of the present invention is characterized by comprising: a sensor provided inside a plant cultivation facility for measuring at least one of the PPFD (Photosynthetic Photon Flux Density) of sunlight and the PPFD of an artificial light source; a concentrating plate including at least one concentrating device that concentrates sunlight and irradiates it onto a plant cultivated in the plant cultivation facility; an artificial light source unit provided inside the plant cultivation facility for irradiating artificial light onto the plant; and a control device that compares the PPFD of sunlight measured through the sensor with a target PPFD of the plant, and if the PPFD of sunlight is less than the target PPFD, controls the artificial light source unit to make it equal to the target PPFD to adjust the PPFD provided to the plant.

Inventors

  • 권기태
  • 김정수
  • 정희석
  • 천석희

Assignees

  • 재단법인 키엘연구원

Dates

Publication Date
20260512
Application Date
20241104

Claims (10)

  1. A sensor provided inside a plant cultivation facility for measuring at least one of the PPFD (Photosynthetic Photon Flux Density) of sunlight and the PPFD of an artificial light source; A concentrating plate comprising at least one concentrating device that concentrates sunlight and irradiates it onto plants grown in the plant cultivation facility; An artificial light source unit provided inside the above-mentioned plant cultivation facility and irradiating artificial light onto the plant; and A control device that compares the PPFD of sunlight measured through the sensor with the target PPFD of the plant, and if the PPFD of the sunlight is less than the target PPFD, controls the artificial light source to make it equal to the target PPFD to adjust the PPFD provided to the plant; A plant cultivation system characterized by including
  2. In paragraph 1, The above-mentioned light-concentrating device is, A light-collecting unit that collects the above sunlight; A diffuser spaced apart from the above-mentioned light-collecting unit to diffuse and irradiate sunlight onto the above-mentioned plant; A transmission unit connected to the above-mentioned light-collecting unit and diffusion unit, which transmits sunlight from the above-mentioned light-collecting unit to the above-mentioned diffusion unit; and A plant cultivation system characterized by including a reflector that covers the periphery of the transmission unit to increase the transmission efficiency of the sunlight when the transmission unit transmits sunlight.
  3. In paragraph 2, A plant cultivation system characterized by the above-mentioned light-collecting unit, diffusion unit, transmission unit, and reflection unit being formed as a single unit.
  4. In paragraph 1, The above control device is, A plant cultivation system characterized by identifying the growth period of the above-mentioned plant and determining the target PPFD of the above-mentioned plant based on target PPFD information for each growth period for the previously stored plant.
  5. In paragraph 1, The above control device is, A plant cultivation system characterized by calculating a deficit PPFD based on the difference between the above-mentioned PPFD of sunlight and the above-mentioned target PPFD, and controlling the brightness and wavelength of the above-mentioned artificial light source to satisfy the above-mentioned deficit PPFD.
  6. In paragraph 1, The above control device is, A plant cultivation system characterized by identifying the optimal spectrum of the plant based on optimal spectrum information set for each plant, and selectively driving only the artificial light source having the optimal spectrum in the artificial light source unit so that the artificial light having the optimal spectrum is irradiated onto the plant.
  7. In paragraph 1, The above control device is, A plant cultivation system characterized by collecting at least one of weather forecast data and past weather data based on location information from an external device, predicting the PPFD of sunlight based on at least one of the collected weather forecast data and past weather data, comparing the predicted PPFD of sunlight with the target PPFD, and controlling the artificial light source unit to become the target PPFD when the PPFD of sunlight is less than the target PPFD.
  8. A step in which a control device receives the PPFD of sunlight measured through a sensor; The above control device compares the PPFD of the sunlight with the target PPFD of the plant being grown in the plant cultivation facility; and The above control device controls the artificial light source to adjust the PPFD provided to the plant so that, when the PPFD of the sunlight is less than the target PPFD, it becomes the target PPFD; A method for cultivating plants characterized by including
  9. In paragraph 8, In the step of controlling the PPFD provided to the above plant, A method for cultivating plants characterized by the above-described control device calculating a deficit PPFD based on the difference between the above-described solar PPFD and the above-described target PPFD, and controlling the lighting of the above-described artificial light source to satisfy the deficit PPFD.
  10. In paragraph 8, In the step of controlling the PPFD provided to the above plant, A method for cultivating plants, characterized in that the above-described control device identifies the optimal spectrum of the plant based on optimal spectrum information set for each plant, and selectively drives only the artificial light source having the optimal spectrum in the above-described artificial light source unit so that the artificial light having the optimal spectrum is irradiated onto the plant.

Description

System for Plant Cultivation and Method Thereof The present invention relates to a plant cultivation system and a method thereof, and more specifically, to a plant cultivation system and a method thereof that combines sunlight and artificial light in indoor plant cultivation to optimally provide the photosynthetic effective magnetic flux density (PPFD) required for plant growth while improving energy efficiency. Recently, technologies for smart farms, which are intelligent farms combining agriculture and information and communication technology, are being actively developed. The development of smart farms can lead to increased agricultural production as well as reduced labor hours. Furthermore, smart farms offer the advantage of improving crop quality by providing an optimized growing environment, and also allow for the calculation of harvest timing and yields by predicting crop growth. Another advantage of smart farms is that they can be operated indoors. Specifically, providing artificial light sources using various types of lighting to cultivate crops in facilities such as indoors or greenhouses can also be considered a smart farm technology. However, providing indoor light equivalent to the amount supplied to crops by sunlight outdoors can require a significant amount of power. Therefore, there is a need to develop a crop cultivation device capable of providing a light source to crops with optimal efficiency using minimal power. The background technology of the present invention is disclosed in Korean Published Patent No. 10-2014-0030812 (published on March 12, 2014, temperature and humidity control system for a greenhouse and method for controlling the same). FIG. 1 is an illustrative diagram for explaining a plant cultivation system according to one embodiment of the present invention. FIG. 2 is a block diagram schematically showing the configuration of a plant cultivation system according to one embodiment of the present invention. FIG. 3 is an illustrative diagram for explaining a light-collecting plate according to one embodiment of the present invention. FIG. 4 is an illustrative diagram for explaining a light-collecting device according to one embodiment of the present invention. FIG. 5 is a block diagram schematically showing the configuration of a control device according to one embodiment of the present invention. FIG. 6 is a flowchart illustrating a method for cultivating plants in a plant cultivation facility according to one embodiment of the present invention. Hereinafter, a plant cultivation system and method according to an embodiment of the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation. Additionally, the implementations described herein may be implemented, for example, as methods or processes, devices, software programs, data streams, or signals. Even if discussed only in the context of a single form of implementation (e.g., discussed only as a method), implementations of the discussed features may also be implemented in other forms (e.g., devices or programs). Devices may be implemented in appropriate hardware, software, and firmware, etc. Methods may be implemented in devices such as processors, which generally refer to processing devices including, for example, computers, microprocessors, integrated circuits, or programmable logic devices. Processors also include communication devices such as computers, cell phones, portable/personal digital assistants ("PDAs"), and other devices that facilitate the communication of information between end-users. Furthermore, the terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Terms such as "first," "second," etc., may be used to describe various components, but the components should not be limited by these terms. These terms are used solely for the purpose of distinguishing one component from another. Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. FIG. 1 is an illustrative diagram for explaining a plant cultivation system according to an embodiment of the presen