KR20230066228A - AI glass greenhouse vacuum cleaner - Google Patents
AI glass greenhouse vacuum cleaner Download PDFInfo
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- KR20230066228A KR20230066228A KR1020210151860A KR20210151860A KR20230066228A KR 20230066228 A KR20230066228 A KR 20230066228A KR 1020210151860 A KR1020210151860 A KR 1020210151860A KR 20210151860 A KR20210151860 A KR 20210151860A KR 20230066228 A KR20230066228 A KR 20230066228A
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- 239000011521 glass Substances 0.000 title claims abstract 8
- 239000000428 dust Substances 0.000 claims abstract description 60
- 230000002265 prevention Effects 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000007791 dehumidification Methods 0.000 claims abstract description 10
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000003670 easy-to-clean Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
- A47L9/2852—Elements for displacement of the vacuum cleaner or the accessories therefor, e.g. wheels, casters or nozzles
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/009—Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
- A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
- G05D1/0255—Control of position or course in two dimensions specially adapted to land vehicles using acoustic signals, e.g. ultra-sonic singals
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G2009/1484—Glazing apparatus
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G2009/1492—Cleaning apparatus
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
- A47L2201/04—Automatic control of the travelling movement; Automatic obstacle detection
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- G05D2201/0215—
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electric Vacuum Cleaner (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
Description
본 발명은 AI 유리온실 청소기에 관한 것으로서,The present invention relates to an AI glasshouse cleaner,
더욱 상세하게는 로봇청소기에 있어서,More specifically, in the robot vacuum cleaner,
제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 3개의 버튼으로 구성한 작동선택버튼, 본체가 이동할 수 있게 모터가 내장된 바퀴로 구성한 이동바퀴, 먼지를 흡입할 수 있게 노즐형으로 구성한 먼지흡입구, 먼지를 안전하게 저장할 수 있게 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성한 먼지통, 경사를 감지할 수 있게 본체와 중력방향과의 각도를 측정하도록 구성한 경사도감지센서, 전방의 물체를 감지할 수 있게 초음파 거리감지센서를 이용하여 구성한 전방감지센서로 구성 하여서,Operation selection button composed of three buttons to select dehumidification mode, dust suction mode, and dust prevention coating mode, moving wheel composed of wheels with built-in motor so that the main body can move, dust composed of nozzle type to suck dust A suction port, a dust bin constructed by attaching a backflow prevention filter with a certain volume of space to safely store dust, a tilt sensor configured to measure the angle between the main body and the direction of gravity to detect an inclination, and an object in front to be detected. It is composed of a front detection sensor configured using an ultrasonic distance detection sensor so that it can be
로봇형 청소기에 의하여 기존의 수동 노즐 청소기가 닿지 않는 곳까지 원활히 청소를 하는 데 용이하도록 함을 목적으로 한 것이다.Its purpose is to make it easy for a robot-type cleaner to smoothly clean a place where conventional manual nozzle cleaners cannot reach.
일반적으로 로봇청소기는 물을 멀리 있는 물체를 향해 발사하는 것이다.In general, a robot vacuum cleaner shoots water toward a distant object.
상기한 바와 같이 로봇청소기는 물탱크, 압축기, 밸브, 핸들파이프, 노즐으로 구성된 것이다.As described above, the robot cleaner is composed of a water tank, a compressor, a valve, a handle pipe, and a nozzle.
이상과 같은 로봇청소기는 물탱크를 통하여 물을 보관하고, 압축기를 통하여 공기를 압축하고, 밸브를 통하여 물 분사를 조절하고, 핸들파이프를 통하여 물 분사 방향을 조절하고, 노즐을 통하여 물을 분사 함으로써 물을 멀리 있는 물체를 향해 발사하는 것이다.The robot cleaner as described above stores water through a water tank, compresses air through a compressor, controls water injection through a valve, controls the direction of water injection through a handle pipe, and injects water through a nozzle. It is to project water towards a distant object.
그러나 상기한 바와 같은 종래의 로봇청소기는 지근거리 청소는 용이하나 원거리의 청소가 용이하지 않은 문제점이 있었다.However, the conventional robot cleaner as described above has a problem in that close-distance cleaning is easy, but long-distance cleaning is not easy.
이에 본 발명은 종래의 로봇청소기가 지근거리 청소는 용이하나 원거리의 청소가 용이하지 않은 문제점을 해결하기 위한 것이다.Therefore, the present invention is to solve the problem that the conventional robot cleaner is easy to clean at a short distance but not easy to clean at a long distance.
즉, 본 발명은 제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 3개의 버튼으로 구성한 작동선택버튼, 본체가 이동할 수 있게 모터가 내장된 바퀴로 구성한 이동바퀴, 먼지를 흡입할 수 있게 노즐형으로 구성한 먼지흡입구, 먼지를 안전하게 저장할 수 있게 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성한 먼지통, 경사를 감지할 수 있게 본체와 중력방향과의 각도를 측정하도록 구성한 경사도감지센서, 전방의 물체를 감지할 수 있게 초음파 거리감지센서를 이용하여 구성한 전방감지센서로 구성한 것이다.That is, the present invention is an operation selection button composed of three buttons to select a dehumidification mode, a dust suction mode, and an anti-dust coating mode, a moving wheel composed of a wheel with a built-in motor so that the main body can move, and a dust suction A nozzle-shaped dust inlet, a dust bin configured with a backflow prevention filter installed in a space of a certain volume to safely store dust, a tilt sensor configured to measure the angle between the main body and the direction of gravity to detect tilt, and a front It is composed of a front detection sensor configured using an ultrasonic distance detection sensor to detect an object of .
따라서 본 발명은 제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 3개의 버튼으로 구성한 작동선택버튼, 본체가 이동할 수 있게 모터가 내장된 바퀴로 구성한 이동바퀴, 먼지를 흡입할 수 있게 노즐형으로 구성한 먼지흡입구, 먼지를 안전하게 저장할 수 있게 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성한 먼지통, 경사를 감지할 수 있게 본체와 중력방향과의 각도를 측정하도록 구성한 경사도감지센서, 전방의 물체를 감지할 수 있게 초음파 거리감지센서를 이용하여 구성한 전방감지센서로 구성 함으로써, 로봇형 청소기에 의하여 기존의 수동 노즐 청소기가 닿지 않는 곳까지 원활히 청소를 하는 데 용이하도록 한 효과를 갖는 것이다.Therefore, the present invention is an operation selection button composed of three buttons to select a dehumidification mode, a dust suction mode, and an anti-dust coating mode, a moving wheel composed of a wheel with a built-in motor so that the main body can move, and a nozzle to suck dust A molded dust inlet, a dust bin configured with a backflow prevention filter in place with a certain volume of space to safely store dust, a tilt sensor configured to measure the angle between the main body and the direction of gravity to detect the inclination, and the front By configuring the front detection sensor configured using the ultrasonic distance detection sensor to detect the object, it has the effect of facilitating the cleaning by the robot cleaner to the place where the conventional manual nozzle cleaner cannot reach.
도 1: 본 발명의 개요도Figure 1: schematic diagram of the present invention
즉, 본 발명은 제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 3개의 버튼으로 구성한 (1)작동선택버튼, 본체가 이동할 수 있게 모터가 내장된 바퀴로 구성한 (2)이동바퀴, 먼지를 흡입할 수 있게 노즐형으로 구성한 (3)먼지흡입구, 먼지를 안전하게 저장할 수 있게 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성한 (4)먼지통, 경사를 감지할 수 있게 본체와 중력방향과의 각도를 측정하도록 구성한 (5)경사도감지센서, 전방의 물체를 감지할 수 있게 초음파 거리감지센서를 이용하여 구성한 (6)전방감지센서로 구성 된 것이다.That is, the present invention consists of three buttons to select a dehumidification mode, a dust suction mode, and an anti-dust coating mode (1) an operation selection button, (2) a moving wheel composed of a wheel with a built-in motor so that the main body can move, (3) Dust inlet configured in a nozzle type to suck in dust, (4) Dust bin configured with a backflow prevention filter in place with a certain volume of space to safely store dust, Main body and gravity direction to detect inclination It is composed of (5) a gradient sensor configured to measure the angle of an object, and (6) a front sensor configured using an ultrasonic distance sensor to detect an object in front.
여기서, (1)작동선택버튼은 제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 3개의 버튼으로 구성한 것이다.Here, (1) the operation selection button consists of three buttons to select a dehumidification mode, a dust suction mode, and an anti-dust coating mode.
여기서, (2)이동바퀴는 본체가 이동할 수 있게 모터가 내장된 바퀴로 구성한 것이다.Here, (2) the moving wheel is composed of a wheel with a built-in motor so that the main body can move.
여기서, (3)먼지흡입구는 먼지를 흡입할 수 있게 노즐형으로 구성한 것이다.Here, (3) the dust inlet is configured in the form of a nozzle to suck in dust.
여기서, (4)먼지통은 먼지를 안전하게 저장할 수 있게 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성한 것이다.Here, (4) the dust bin is configured by requesting a backflow prevention filter with a space of a certain volume so as to safely store dust.
여기서, (5)경사도감지센서는 경사를 감지할 수 있게 본체와 중력방향과의 각도를 측정하도록 구성한 것이다.Here, (5) the inclination sensor is configured to measure the angle between the main body and the direction of gravity so as to detect the inclination.
여기서, (6)전방감지센서는 전방의 물체를 감지할 수 있게 초음파 거리감지센서를 이용하여 구성한 것이다.Here, (6) the front sensor is configured using an ultrasonic distance sensor to detect an object in front.
이하, 본 발명의 사용과정에 대하여 설명하면 다음과 같다.Hereinafter, the use process of the present invention will be described.
상기한 바와 같이 본 발명은 로봇청소기에 있어서 제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 3개의 버튼으로 구성한 (1)작동선택버튼, 본체가 이동할 수 있게 모터가 내장된 바퀴로 구성한 (2)이동바퀴, 먼지를 흡입할 수 있게 노즐형으로 구성한 (3)먼지흡입구, 먼지를 안전하게 저장할 수 있게 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성한 (4)먼지통, 경사를 감지할 수 있게 본체와 중력방향과의 각도를 측정하도록 구성한 (5)경사도감지센서, 전방의 물체를 감지할 수 있게 초음파 거리감지센서를 이용하여 구성한 (6)전방감지센서로 구성된 본 발명을 적용하여 실시하게 되면, 지근거리 청소는 용이하나 원거리의 청소가 용이하지 않은 문제점을 해소하도록 한 것이다.As described above, the present invention consists of (1) an operation selection button composed of three buttons to select a dehumidification mode, a dust suction mode, and an anti-dust coating mode in a robot cleaner, and a wheel with a built-in motor so that the main body can move (2) Moving wheels, nozzle-shaped to suck in dust (3) dust inlet, space of a certain volume to safely store dust, and backflow prevention filter (4) dust bin configured to detect inclination (5) a gradient sensor configured to measure the angle between the main body and the direction of gravity, and (6) a front sensor configured using an ultrasonic distance sensor to detect an object in front. When done, it is to solve the problem that close-distance cleaning is easy but long-distance cleaning is not easy.
또한 본 발명의 실시에 있어, 3개의 버튼으로 구성한 (1)작동선택버튼으로 구성한 본 발명을 적용하여 실시하게 되면, 제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 될 것이다.In addition, in the practice of the present invention, when the present invention composed of (1) operation selection button composed of three buttons is applied and practiced, it will be possible to select a dehumidification mode, a dust suction mode, and an anti-dust coating mode.
또한 본 발명의 실시에 있어, 모터가 내장된 바퀴로 구성한 (2)이동바퀴로 구성한 본 발명을 적용하여 실시하게 되면, 본체가 이동할 수 있게 될 것이다.In addition, in the practice of the present invention, when the present invention composed of (2) moving wheels composed of wheels with built-in motors is applied and practiced, the main body will be able to move.
또한 본 발명의 실시에 있어, 노즐형으로 구성한 (3)먼지흡입구로 구성한 본 발명을 적용하여 실시하게 되면, 먼지를 흡입할 수 있게 될 것이다.In addition, in the practice of the present invention, when the present invention consisting of (3) a dust inlet configured in a nozzle type is applied and practiced, it will be possible to inhale dust.
또한 본 발명의 실시에 있어, 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성한 (4)먼지통으로 구성한 본 발명을 적용하여 실시하게 되면, 먼지를 안전하게 저장할 수 있게 될 것이다.In addition, in the practice of the present invention, if the present invention consisting of (4) a dust box configured by requesting a backflow prevention filter with a space of a certain volume is applied and implemented, dust can be safely stored.
또한 본 발명의 실시에 있어, 본체와 중력방향과의 각도를 측정하도록 구성한 (5)경사도감지센서로 구성한 본 발명을 적용하여 실시하게 되면, 경사를 감지할 수 있게 될 것이다.In addition, in the practice of the present invention, when the present invention consisting of (5) a tilt sensor configured to measure the angle between the main body and the direction of gravity is applied and implemented, it will be possible to detect the tilt.
또한 본 발명의 실시에 있어, 초음파 거리감지센서를 이용하여 구성한 (6)전방감지센서로 구성한 본 발명을 적용하여 실시하게 되면, 전방의 물체를 감지할 수 있게 될 것이다.In addition, in the practice of the present invention, when the present invention composed of (6) front detection sensor configured using an ultrasonic distance sensor is applied and implemented, it will be possible to detect an object in front.
1: 작동선택버튼, 2: 이동바퀴, 3: 먼지흡입구, 4: 먼지통, 5: 경사도감지센서, 6: 전방감지센서1: operation selection button, 2: moving wheel, 3: dust inlet, 4: dust box, 5: inclination sensor, 6: front sensor
Claims (7)
제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 3개의 버튼으로 구성한 (1)작동선택버튼, 본체가 이동할 수 있게 모터가 내장된 바퀴로 구성한 (2)이동바퀴, 먼지를 흡입할 수 있게 노즐형으로 구성한 (3)먼지흡입구, 먼지를 안전하게 저장할 수 있게 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성한 (4)먼지통, 경사를 감지할 수 있게 본체와 중력방향과의 각도를 측정하도록 구성한 (5)경사도감지센서, 전방의 물체를 감지할 수 있게 초음파 거리감지센서를 이용하여 구성한 (6)전방감지센서로 구성 된 것을 특징으로 하는 AI 유리온실 청소기.In the robot vacuum cleaner,
(1) operation selection button composed of three buttons to select dehumidification mode, dust suction mode, and dust-proof coating mode; (3) Dust inlet configured in a nozzle-type, with a certain volume of space to safely store dust, and (4) dust bin configured by requesting a backflow prevention filter, measuring the angle between the main body and the direction of gravity to detect the inclination AI glass greenhouse cleaner, characterized in that it consists of (5) a gradient sensor configured to detect an object in front and (6) a front sensor configured using an ultrasonic distance sensor to detect an object in front.
(1)작동선택버튼을 통하여 제습모드, 먼지흡입모드, 먼지방지코팅모드를 선택할 수 있게 3개의 버튼으로 구성함을 특징으로 하는 AI 유리온실 청소기.According to claim 1,
(1) AI glass greenhouse cleaner characterized in that it consists of three buttons so that dehumidification mode, dust suction mode, and dust prevention coating mode can be selected through the operation selection button.
(2)이동바퀴를 통하여 본체가 이동할 수 있게 모터가 내장된 바퀴로 구성함을 특징으로 하는 AI 유리온실 청소기.According to claim 1,
(2) AI glass greenhouse cleaner characterized in that it consists of wheels with built-in motors so that the body can move through the moving wheels.
(3)먼지흡입구를 통하여 먼지를 흡입할 수 있게 노즐형으로 구성함을 특징으로 하는 AI 유리온실 청소기.According to claim 1,
(3) AI glass greenhouse cleaner characterized in that it is configured in a nozzle type to suck dust through a dust inlet.
(4)먼지통을 통하여 먼지를 안전하게 저장할 수 있게 일정 부피의 공간을 두고 역류 방지 필터를 부탁하여 구성함을 특징으로 하는 AI 유리온실 청소기.According to claim 1,
(4) AI glass greenhouse cleaner characterized in that it is composed of a backflow prevention filter with a certain volume of space so that dust can be safely stored through the dust bin.
(5)경사도감지센서를 통하여 경사를 감지할 수 있게 본체와 중력방향과의 각도를 측정하도록 구성함을 특징으로 하는 AI 유리온실 청소기.According to claim 1,
(5) AI glass greenhouse cleaner characterized in that it is configured to measure the angle between the main body and the direction of gravity so that the inclination can be detected through the inclination sensor.
(6)전방감지센서를 통하여 전방의 물체를 감지할 수 있게 초음파 거리감지센서를 이용하여 구성함을 특징으로 하는 AI 유리온실 청소기.According to claim 1,
(6) An AI glasshouse cleaner characterized in that it is configured using an ultrasonic distance sensor to detect an object in front through a front sensor.
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KR20020023323A (en) | 2002-01-16 | 2002-03-28 | 신승윤 | Event-service system of Online and Offline Bringing-simulation game |
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KR20020023323A (en) | 2002-01-16 | 2002-03-28 | 신승윤 | Event-service system of Online and Offline Bringing-simulation game |
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