Plant cultivation apparatus

Patent metadata

Field	Value
Publication number	US-12364211-B2
Application number	US-202118269116-A
Country	US
Kind code	B2
Filing date	Dec 21, 2021
Priority date	Dec 22, 2020
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

A plant cultivation apparatus is disclosed. The plant cultivation apparatus includes a cabinet, a bed, a cultivation unit, a photographing unit, and a control unit. The bed is provided inside of the cabinet. The cultivation unit is seated on the bed and accommodates a medium in which at least a portion of a plant is embedded. The photographing unit is provided inside of the cabinet and captures an image of the cultivation unit. The control unit is configured to receive a captured image from the photographing unit. The cultivation unit includes a cultivation container and a cover unit. The cultivation container is seated on the bed, is provided to have an open upper portion, and accommodates the medium therein. The cover unit shields the open tipper portion of the cultivation container and includes a cover through-hole provided at a position corresponding to the medium. The image captured by the photographing unit includes a first area including the cover through-hole, and a second area surrounding the first area. The control unit is configured to determine, through the image, an abnormal state of the plant according to a ratio of an area occupied by the plant in at least one of the first area or the second area.

First claim

The invention claimed is:

1. A plant cultivation apparatus, comprising:
a cabinet;
at least one bed provided inside of the cabinet;
a cultivation portion provided on the at least one bed;
a medium accommodated in the cultivation portion and in which at least a portion of a plant is embedded;
a camera provided in the cabinet and configured to create an image by photographing the cultivation portion; and
a controller configured to receive the image created by the camera, wherein the cultivation portion includes:
a cultivation container seated on the at least one bed, having an open top, and configured to accommodate the medium therein; and
a cover configured to shield the open top of the cultivation container and having at least one cover through-hole formed at a position corresponding to the medium, wherein the image from the camera includes a first region including the at least one cover through-hole and a second region surrounding the first region and positioned inside of the cover through-hole, and wherein the controller is configured to determine an abnormal state of the plant according to a region ratio occupied by the plant in at least one of the first region or the second region.

2. The plant cultivation apparatus of claim 1 , wherein the controller is configured to perform a first position determination mode for defining the first region using a color difference between the cover portion and the at least one cover through-hole in the image.

3. The plant cultivation apparatus of claim 2 , wherein the controller is configured to define the second region extending in a radial direction from the first region by a predetermined distance in the first position determination mode.

4. The plant cultivation apparatus of claim 1 , wherein the cover portion includes a display provided to determine a position of the at least one cover through-hole by using a preset relative position with respect to the at least one cover through-hole, wherein the image of the camera includes the display, and wherein the controller is configured to perform a second position determination mode for defining the first region by identifying a position of the display in the image and reflecting the relative position.

5. The plant cultivation apparatus of claim 1 , wherein the controller is configured to perform a germination determination mode for determining whether the plant has germinated based on the region ratio occupied by the plant in at least one of the first region or the second region.

6. The plant cultivation apparatus of claim 5 , wherein the controller identifies the region ratio occupied by the plant in at least one of the first region or the second region through a color difference between the cover portion, the at least one cover through-hole, and the plant identified in the image in the germination determination mode.

7. The plant cultivation apparatus of claim 1 , wherein the controller is configured to perform a hardness determination mode for determining whether the plant has fallen through the region ratio occupied by the plant in at least one of the first region or the second region.

8. The plant cultivation apparatus of claim 7 , wherein the controller is configured to determine that the plant is in a fallen state when the region ratio occupied by the plant in the first region is equal to or less than 3% and the region ratio occupied by the plant in the second region is equal to or greater than 5%.

9. The plant cultivation apparatus of claim 8 , wherein the second region is divided into a plurality of zones along a circumference of the first region, and wherein the controller is configured to determine a falling direction of the plant by identifying a region ratio occupied by the plant for each of the plurality of zones.

10. The plant cultivation apparatus of claim 7 , wherein a cultivation space in which the plant is cultivated is formed inside of the cabinet, wherein the plant cultivation apparatus further comprises a blower including a blower fan provided in the cabinet to circulate air in the cultivation space, and wherein the controller is configured to perform a plurality of blowing modes for adjusting an amount of air circulation in the cultivation space by controlling the blower when the fallen state of the plant is determined in the hardness determination mode.

11. The plant cultivation apparatus of claim 10 , wherein the controller is configured to perform a first blowing mode in which a rotational speed of the blower fan is reduced to prevent falling of the plant.

12. The plant cultivation apparatus of claim 11 , wherein the controller is configured to perform a second blowing mode in which an operation of the blower fan is stopped to increase a quality of the image photographed by the camera.

13. The plant cultivation apparatus of claim 7 , further comprising:
a light emitting portion including a light emitting body provided inside of the cabinet and that irradiates light toward the cultivation portion, wherein when the controller determines that the plant is in the fallen state in the hardness determination mode, the controller controls the light emitting portion to increase a light amount of the light emitting body so that a light amount adjustment mode for inducing recovery of the plant in the fallen state is performed.

14. The plant cultivation apparatus of claim 1 , wherein the controller is configured to perform a growth abnormality determination mode for determining whether the plant is in a growth abnormality state by identifying a color of the plant in the image of the camera.

15. The plant cultivation apparatus of claim 14 , wherein the image of the camera includes a third region corresponding to a region other than the first region and the second region of an upper surface of the cover portion, and wherein the controller is configured to determine that the plant is in a growth abnormality state when the color is identified from the plant in the second region and the third region in the growth abnormality determination mode.

16. The plant cultivation apparatus of claim 14 , further comprising:
a light emitting portion including a light emitting body provided inside of the cabinet and that irradiates light toward the cultivation portion, wherein when the plant is determined to be in the growth abnormality state in the growth abnormality determination mode, the controller controls the light emitting portion to reduce a light amount of the light emitting body so that a light amount adjustment mode inducing recovery of the plant in the growth abnormality state is performed.

17. The plant cultivation apparatus of claim 14 , further comprising:
a water supply portion provided inside of the cabinet and configured to supply a nutrient solution to the cultivation portion, wherein the controller performs a flow rate adjustment mode for adjusting the nutrient solution supplied to the cultivation portion by controlling the water supply portion when the controller determines that the plant is in the growth abnormality state in the growth abnormality determination mode.

18. A plant cultivation apparatus, comprising:
a cabinet;
at least one bed provided inside of the cabinet;
a cultivation portion provided on the at least one bed;
a medium accommodated in the cultivation portion and in which at least a portion of a plant is embedded;
a camera provided in the cabinet and configured to create an image by photographing the cultivation portion; and
a controller configured to receive the image created by the camera and determine a status of the plant b

Assignees

• Lg Electronics Inc

Inventors

• Choi Minhwan

Classifications

• G05B15/02

  electric · CPC title

• A01G9/247

  Watering arrangements · CPC title

• A01G9/246

  Air-conditioning systems · CPC title

• A01G9/249

  Lighting means (with special arrangements for promoting growth A01G7/045) · CPC title

• H04N7/18

  Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast · CPC title