KR20170141122A - Indoor and outdoor fine dust compared measurable device of interlocking smart device - Google Patents

Indoor and outdoor fine dust compared measurable device of interlocking smart device Download PDF

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Publication number
KR20170141122A
KR20170141122A KR1020170073109A KR20170073109A KR20170141122A KR 20170141122 A KR20170141122 A KR 20170141122A KR 1020170073109 A KR1020170073109 A KR 1020170073109A KR 20170073109 A KR20170073109 A KR 20170073109A KR 20170141122 A KR20170141122 A KR 20170141122A
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South Korea
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measuring member
measuring
fine dust
air
indoor
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KR1020170073109A
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Korean (ko)
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황윤식
김학용
고근호
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황윤식
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/94—Investigating contamination, e.g. dust
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

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  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Signal Processing (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Air Conditioning Control Device (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention relates to an indoor / outdoor fine dust measuring device for interfacing with a smart device, the indoor / outdoor fine dust measuring device comprising: a main measuring member installed in a room for measuring minute dust and ultrafine dust contained in room air separately; And a sub-measurement member separately provided from the main measurement member for separately measuring fine dust and ultrafine dust contained in the outdoor air, wherein the main measurement member and the sub-measurement member measure A display lamp for displaying the measured fine dust and the ultrafine dust in proportion to the concentration, and a short range wireless communication device for transmitting the measured values to the smart device interlocked with the respective measuring members to compare the indoor / The indoor air is cleanly and continuously maintained by controlling the operation of the air conditioner or the air cleaner by comparing and measuring the indoor and outdoor fine dust concentrations measured simultaneously in real time It is a smart device that provides fine dust concentration information in real time. It may be used as the correspondence information according to the going out.

Description

Technical Field [0001] The present invention relates to an indoor / outdoor fine dust measuring device,

The present invention relates to a technique for measuring fine dusts or ultrafine dusts in indoor and outdoor environments, and more particularly, to a method and system for measuring indoor dust concentration and outdoor dust concentration, To the indoor / outdoor fine dust measuring device interlocked with the smart device.

As is known, the abrupt increase in the use of fossil fuels increases the concentration of suspended dust in the atmosphere, causing problems of visibility disorders and human respiratory diseases.

On the other hand, in order to measure the air quality, fine dust measuring devices manufactured mainly for industrial use are used to measure fine dust in the atmosphere, but it is still expensive and there is an inconvenience to secure a sufficient installation space.

Accordingly, there is a need for a technique that can measure fine dust or ultrafine dust in a living environment of an individual other than an industrial site in real time, can be easily installed, and can easily access the user's fine dust information.

Korean Patent Publication No. 10-2015-0070692 (June 25, 2015) Korean Registered Patent No. 10-1168948 (July 20, 2012)

The object of the present invention is to solve the above-described problems, and it is an object of the present invention to provide a smart device which can easily separate and measure indoor and outdoor fine dust concentrations, transmit measured values to a smart device, Which can be maintained and managed in a clean environment.

In order to achieve the above-mentioned object, the present invention provides an indoor / outdoor fine dust measuring device for interfacing with a smart device, comprising: a main measuring member installed in a room for measuring minute dust and ultrafine dust contained in room air; And a sub-measurement member separately provided from the main measurement member for separately measuring fine dust and ultrafine dust contained in the outdoor air, wherein the main measurement member and the sub-measurement member measure A display lamp for displaying the measured fine dust and the ultrafine dust in proportion to the concentration, and a short range wireless communication device for transmitting the measured values to the smart device interlocked with the respective measuring members to compare the indoor / Communication module.

Preferably, the main measuring member and the sub measuring member each include an inlet and a duct for introducing air, a fine dust sensor module disposed inside the tube for measuring a fine dust concentration, and a fine dust sensor module disposed at a rear end of the fine dust sensor module A dust sensor module disposed at a rear end of the filter for measuring an ultrafine dust concentration; an air intake fan disposed at a rear end of the duct for drawing outside air through the air outlet to the outside through an outlet; A control circuit unit for controlling the short range wireless communication module, each sensor module and the intake fan, and a power supply unit for supplying power for the operation.

Preferably, each sensor module may include a laser diode or an infrared diode disposed laterally opposite to the channel, and a light receiving sensor receiving the light from the diode.

Preferably, each of the bottom surfaces of the main measuring member and the bottom measuring member may further include an attaching member for adhering to the building wall surface or the inner and outer surfaces of the glass window by suction or adhesion.

Preferably, the main and sub measuring members are each hemispherical. The main and sub measuring members may each include a wireless recharging tray on which the measuring member is seated to charge the power supply of the measuring member by an induced current.

Preferably, the sub-measuring member is seated on the upper portion of the main measuring member and the matched seating portion is drawn in. The main measuring member is formed in the shape of a cochlea, And comparing the concentration value measured by the main measuring member with the concentration value measured by the sub measuring member so that the sensor module and the intake fan fail or malfunction Can be calibrated.

Preferably, the sub-measuring member may further include a waterproof member surrounding the entire outer surface excluding the inlet and the outlet.

Preferably, the measuring member is interlocked with an air purifier having a short-range wireless communication module installed in the room, so that the control circuit unit operates the interlocked air conditioner or the air purifier when the outdoor measured value is equal to or greater than a reference value And if it is lower than the reference value, the air conditioner or the air cleaner may be stopped to ventilate the outside air.

The apparatus may further include a carbon dioxide sensor module disposed on a channel of the main measuring member to measure a carbon dioxide concentration.

Preferably, an area outside the suction port of the main measuring member may be formed in a concave shape.

According to the present invention, it is possible to maintain indoor air cleanly and continuously by controlling the operation of the air conditioner or the air cleaner by comparing and determining the indoor / outdoor fine dust concentration measured simultaneously in real time , It is possible to provide the fine dust concentration information in real time with the interlocked smart device, so that the user can utilize it as correspondence information on whether or not the user goes out or goes out.

Therefore, there is an effect that the indoor air conditioner or the air cleaner can be operated or ventilated by grasping in real time the pollution degree of indoor and outdoor air of a child, a senior citizen, or a nursing home, a primary school, a hospital, .

FIGS. 1A and 1B schematically illustrate an indoor / outdoor fine dust measuring device for interfacing with a smart device according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a measuring member of the indoor / outdoor fine particle measurement device of the smart appliance interlocking system of FIGS. 1A and 1B.
FIGS. 3A and 3B are schematic views illustrating an apparatus for measuring indoor / outdoor fine particles connected to a smart device according to a second embodiment of the present invention.
FIG. 4 illustrates a configuration of a main measuring device of the indoor / outdoor fine dust measuring device of FIG. 3 a and FIG. 3 b.
FIG. 5 illustrates a configuration of a sub-measurement device of the indoor / outdoor fine particle measurement device of the smart device interlocking device of FIGS. 3A and 3B.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1A and 1B, a smart device interlocking indoor / outdoor fine dust measuring device according to the present invention includes a main measuring member 110 installed in a room for separately measuring fine dust and ultrafine dust contained in indoor air, ; And a sub measuring member 120 which is separately installed from the main measuring member 110 and separately for fine dust and ultrafine dust contained in the outdoor air. The main measuring member and the sub measuring members 110 and 120 (118a, 118b, 128a, 128b) for displaying the fine dust measurement value and the ultrafine dust measurement value measured by each of them in proportion to the concentration, and a smart device (Not shown) for comparing indoor / outdoor air fine dusts by transmitting the indoor / outdoor air /

Referring to FIGS. 1A to 2, a smart device interlocking indoor / outdoor fine dust measuring device according to a first embodiment having the above-described configuration will be described in detail as follows.

The indoor / outdoor fine dust measuring device according to the first embodiment of the present invention includes a main measuring member 110 formed in a hemispherical shape for measuring the concentration of fine and ultrafine dust in a room, A sub-measuring member 120 for measuring the concentration of fine and ultrafine dusts outdoors and a matched main and sub measuring members 110 and 120 are seated on the measuring member 110 and 120, And a wireless recharging tray 130 for recharging.

The main measuring member 110 measures the fine and ultrafine dust concentrations of the room air as described above. The main measuring member 110 includes a suction port 111 through which external air (outside air) flows and a pipeline 112 as a flow path, Fine dust sensor modules 113a and 113b disposed inside the pipeline 112 for measuring the fine dust concentration and a filter 114 disposed downstream of the fine dust sensor modules 113a and 113b for filtering fine dust, An ultrafine dust sensor module 115a and 115b disposed at the rear end of the filter 114 to measure the concentration of ultrafine dust that has passed through the filter 114, An air intake fan 116 for sucking air into the duct 112 and exhausting the air to the outside through an outlet 117 and a control for controlling the short range wireless communication module and the sensor modules 113a, 113b, 115a, and 115b and the air intake fan 116 A circuit part (not shown), and a power supply part (battery) for supplying power for the overall operation of the above- .

Each of the sensor modules includes a laser diode or infrared diodes 113a and 115a disposed laterally opposite to the pipeline 112 and a light receiving sensor 113b or 115b receiving the light from the diodes 113a and 115a .

The bottom surface of the main measuring member 110 further includes an attaching member 119 for adhering to the inner wall surface of the building or the inner surface of the window by adsorption (adsorption by pneumatic pressure or by magnetic force) . Here, in the case of attraction by magnetic force, a metal pad (not shown) may first be attached to the inner surface of the window, and then the attachment member (e.g., ND magnet) 119 may be attached to the metal pad and fixed.

The first and second display lamps 118a and 118b can visually measure the fine dust measurement values and the ultrafine dust measurement values measured by the sensor modules 113a and 113b in proportion to their concentrations, Change, change in length, or in combination.

Meanwhile, the main measuring member 110 may further include a carbon dioxide sensor module (not shown) disposed in the channel 112 to measure the carbon dioxide concentration.

The sub measuring member 120 has substantially the same constitution as the main measuring member 110 and measures the fine and ultrafine dust concentrations of the outside air as described above. In this configuration, external air (outside air) Fine dust sensor modules 123a and 123b disposed in the pipeline 122 to measure the fine dust concentration and a plurality of fine dust sensor modules 123a and 123b disposed at the rear end of the fine dust sensor modules 123a and 123b, An ultrafine dust sensor module 125a, 125b disposed at the rear end of the filter 124 for measuring the concentration of ultrafine dust that has passed through the filter 124, An intake fan 126 disposed at a rear end of the intake port 122 and sucking outside air into the duct 122 through an intake port 121 and exhausting the air to the outside through an exhaust port 127; A control circuit (not shown) for controlling the intake fans 126 and 125a and the intake fan 126, It may include a power supply (not shown) for supplying power for the copper.

Each of the sensor modules includes a laser diode or infrared diodes 123a and 125a disposed laterally opposite to the channel 122 and light receiving sensors 123b and 125b receiving the light from the diodes 123a and 125a .

The bottom surface of the sub measuring member 120 may further include an attaching member 129 that is attached to the outer wall surface of the building or the outer surface of the window by adsorption (adsorption by pneumatic pressure or by magnetic force) . Here, in the case of attraction by magnetic force, a metal pad (not shown) may first be attached to the outer surface of the glass window, and then an attachment member (e.g., ND magnet) 129 may be attached to the metal pad and fixed.

The first and second display lamps 128a and 128b can visually measure the fine dust measurement value and the ultrafine dust measurement value measured by the sensor modules 123a and 123b in proportion to the concentration thereof, Change, change in length, or in combination.

The sub measuring member 120 further includes a waterproof member (silicon material) that surrounds the entire outer surface except for the suction port 121 and the discharge port 127 so that fine dust and ultrafine dust can be continuously measured even in the event of rain .

As shown, the main and minor measuring members 110 and 120 are each configured to be opposed hemispherical, in which the matched main and auxiliary measuring members 110 and 120 are seated to guide the measuring members 110 and 120 It charges wirelessly by current. On the other hand, the main and sub measuring members 110 and 120 can be turned on and off by pushing the power button P, and visually display the power residual amount due to the color change.

The main and sub measuring members 110 and 120 are interlocked with an air conditioner or an air purifier having a short range wireless communication module installed in the room so that the control circuit unit can control the indoor air conditioner or the air conditioner, The air conditioner or the air cleaner is stopped and the outside air is ventilated. If the indoor measured value is equal to or higher than the outdoor measured value, the air conditioner or the air cleaner can be shut down. In addition, the main and sub measuring members 110 and 120 communicate with a smart device (not shown) linked through a near field wireless communication module by using WiFi (when transmitting a high capacity data) or Bluetooth (when transmitting a low capacity data) And may control the above-described operations of the control circuit portion by the smart device.

Therefore, according to the smart device interlocking indoor / outdoor fine dust measuring device of the first embodiment as described above, it is possible to compare indoor and outdoor fine dust concentrations measured simultaneously in real time to control whether the air conditioner or the air cleaner is in operation, And the fine dust concentration information can be provided in real time by the interlocked smart device, so that the user can utilize it as corresponding information on whether or not the user goes out or goes out.

Referring to FIGS. 3A to 5, a smart device interlocking indoor / outdoor fine dust measuring device according to a second embodiment having the above-described configuration will be described in detail as follows.

The indoor / outdoor fine dust measuring device according to the second embodiment of the present invention includes a main measuring member 210 for measuring fine and ultra fine dust concentration in the room, and a shape drawn in the upper part of the main measuring member 110 And a sub measuring member 220 for measuring the concentration of fine and ultrafine dust outside the main measuring member 210. The main measuring member 210 includes a function of wirelessly charging the sub measuring member 220 which is seated on the top by induction current .

The main measuring member 210 measures the fine and ultrafine dust concentrations of the room air as described above. The main measuring member 210 has a suction port 211 through which external air (outside air) flows and a pipeline 212 as a flow path, A fine dust sensor module 213a or 213b disposed inside the pipeline 212 for measuring a fine dust concentration and a filter disposed at a rear end of the fine dust sensor module 213a or 213b for filtering fine dust, An ultrafine dust sensor module (not shown) disposed at the rear end of the filter for measuring the concentration of ultrafine dust that has passed through the filter, and an ultrafine dust sensor module (not shown) disposed at the rear end of the duct 212, A control circuit (not shown) for controlling the short range wireless communication module, the respective sensor modules 213a and 213b and the intake fan 216, and the control circuit A power supply (external power supply) (214) that supplies power for the overall operation of the configuration ).

Here, each sensor module may be composed of a laser diode or an infrared diode 213a arranged laterally opposite to the cochlear duct 212 in the form of a cochlea, and a light receiving sensor 213b receiving the light from the diode 213a.

In addition, the first and second display lamps (not shown) can visually measure the fine dust measurement value and the ultrafine dust measurement value measured by the sensor modules 213a and 213b in proportion to the concentration thereof, , Or by changing the length, or by combining.

Meanwhile, the main measuring member 210 may further include a carbon dioxide sensor module 215 disposed on the channel 212 to measure the concentration of carbon dioxide.

The main measuring member 210 is formed in a concave shape U so that dusts having a predetermined size or more of the outside air can be stacked on the outside area without being introduced into the inlet 211 .

In addition, the main measuring member 210 may further include a USB connection terminal (USB) capable of downloading measurement data or transmitting data for upgrading the OS of the measurement members 210 and 220.

The sub-measuring member 220 measures the fine and ultrafine dust concentrations of the outdoor air as described above. The suction member 221 and the channel 222, which are flow paths, Fine dust sensor modules 223a and 223b disposed inside the pipeline 222 for measuring the concentration of fine dust particles and a filter (not shown) disposed downstream of the fine dust sensor modules 223a and 223b for filtering fine dust, An ultrafine dust sensor module disposed at the rear end of the filter for measuring the ultrafine dust concentration through the filter, and a super fine dust sensor module disposed at the rear end of the duct 222 for sucking the outside air into the duct 222 through the suction port 221, A control circuit (not shown) for controlling the short-range wireless communication module, each of the sensor modules 223a and 223b and the intake fan 226, and an overall operation of the above-described configuration And a power supply unit 224 for supplying power for power supply.

Each of the sensor modules includes a laser diode or infrared diodes 123a and 125a disposed laterally opposite to the channel 122 and light receiving sensors 123b and 125b receiving the light from the diodes 123a and 125a .

On the other hand, the bottom surface of the sub measuring member 220 further includes an attaching member 229 for attaching to the outer wall of the building or the outer surface of the window by adsorption (suction by pneumatic pressure or suction by magnetic force) . Here, in the case of attraction by magnetic force, a metal pad (not shown) may be first attached to the outer surface of the window, and then an attachment member (e.g., ND magnet) 229 may be attached to the metal pad and fixed.

In addition, the first and second display lamps can display the fine dust measurement value and the ultrafine dust measurement value measured by the respective sensor modules 223a and 223b visually in proportion to the concentration thereof, for example, Or may be combined and displayed.

The sub measuring member 220 further includes a waterproof member (not shown) that surrounds the entire outer surface except for the suction port 221 and the discharge port 227 so that fine dust and ultrafine dust can be continuously measured even in rainy weather .

In addition, the secondary measurement member 220 may further include a USB connection terminal (USB) capable of downloading the measurement data or transmitting data for upgrading the OS of the measurement members 210 and 220.

The main and sub measuring members 210 and 220 may be interlocked with an air conditioner or an air purifier having a short-range wireless communication module installed in the room so that the control circuit unit can be connected to the indoor air conditioner or the air conditioner if the outdoor measured value is equal to or higher than a specific reference value The air conditioner or the air cleaner is stopped and the outside air is ventilated. If the indoor measured value is equal to or higher than the outdoor measured value, the air conditioner or the air cleaner can be shut down. The main and sub measuring members 210 and 220 can communicate with a smart device (not shown) linked through a local wireless communication module by using WiFi (when transmitting a high capacity data) or Bluetooth (when transmitting a low capacity data) And may control the above-described operations of the control circuit portion by the smart device.

On the other hand, the ultrafine dust sensor module of the main and sub measuring members 210 and 220 in the second embodiment may not be necessary as an optional configuration.

In addition, the main measuring member 210 is configured such that the sub measuring member 220 is received and seated, so that the mounted sub measuring member 220 can be charged by induction current. On the other hand, the main measuring member 210 can be turned on and off by pushing the power button P, and the power residual amount can be visually displayed by the color change.

3B, a seating part M to which the sub measuring member 220 is seated and is fitted is formed in the upper part of the main measuring member 210, and the channel 212 of the main measuring member 210 And the control circuit part is formed in a cochlier shape so that the control circuit part is introduced into the calibration space S between the matched main measuring member 210 and the sub measuring member 220 in the same space, And the density values measured by the sub measuring member 220 are compared with each other to correct erroneous or malfunctions of the sensor modules 213a, 213b, 223a, 223b and the intake fans 216, 226 when they do not coincide with each other within the error range .

At the same time, the control circuit unit controls the sensor modules 213a, 213b (or 213b) and the sensor modules 213a, 213b , 223a, 223b and the intake fans 216, 226 can be corrected.

Therefore, according to the smart device interlocking indoor / outdoor fine dust measuring device of the second embodiment as described above, the concentration of indoor / outdoor fine dusts measured at the same time in real time is compared to judge whether the air cleaner or the air cleaner is in operation, And the fine dust concentration information can be provided in real time by the interlocked smart device, so that the user can utilize it as corresponding information on whether or not the user goes out or goes out.

The embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention and therefore various equivalents It should be understood that water and variations may be present.

110, 210: main measuring member 120, 220:
130: Wireless charging tray

Claims (10)

A main measuring member which is installed indoors and separately measures fine dust contained in the room air and ultrafine dust; And
And a sub-measuring member provided separately from the main measuring member for separately measuring fine dust contained in the outdoor air and ultrafine dust,
Wherein each of the main measuring member and the sub measuring member includes a display lamp for displaying the fine dust measurement value and the ultrafine dust measurement value measured by each in proportion to the concentration thereof, And a short-range wireless communication module for comparing the indoor / outdoor air fine dusts by transmitting the indoor / outdoor air / fine dusts.
The method according to claim 1,
The main measuring member and the sub measuring member, respectively,
A fine dust sensor module disposed on the inner side of the duct for measuring a fine dust concentration; a filter disposed at a rear end of the fine dust sensor module; An air intake fan disposed at a rear end of the duct for exhausting outside air to the outside through an exhaust port by sucking the outside air into the duct through the inlet port and an air intake fan for controlling the remote wireless communication module, And a power supply unit for supplying power for the operation of the smart device.
3. The method of claim 2,
Wherein each of the sensor modules comprises a laser diode or an infrared diode disposed laterally opposite to the channel and a light receiving sensor for receiving the light from the diode.
The method according to claim 1,
Wherein each of the bottom surfaces of the main measuring member and the bottom measuring member further comprises an attaching member which is attached to the building wall surface or the inner and outer surfaces of the windshield by a suction or an adhesive manner, .
3. The method of claim 2,
Wherein the main and sub measuring members are each formed in a hemispherical shape and further comprise a wireless charging tray for receiving the measuring member and charging the power supply unit of the measuring member by induction current, Measuring device.
3. The method of claim 2,
Wherein the main measuring member has an upper portion on which the sub-measuring member is seated and a matching seating portion is inserted and formed, the channel of the main measuring member is formed into a cochlear shape,
Wherein the control circuit portion compares the concentration value measured by the main measuring member with the concentration value measured by the sub-measuring member, which is introduced into the calibration space between the matched main measuring member and the sub measuring member in the same space, , And corrects an error or malfunction of the sensor module and the intake fan.
The method according to claim 5 or 6,
Wherein the sub-measuring member further comprises a waterproof member surrounding the entire outer surface excluding the inlet and the outlet.
The method according to claim 5 or 6,
Wherein the measuring member is interlocked with an air purifier having a short-range wireless communication module installed in the room,
The control circuit unit activates the air conditioner or the air cleaner interlocked when the outdoor measured value is equal to or greater than a reference value relative to the indoor measured value and stops the air conditioner or the air cleaner when the measured value is lower than the reference value, And the air conditioner or the air cleaner is stopped when the measured value is equal to or greater than the measured value.
The method according to claim 6,
Further comprising a carbon dioxide sensor module disposed in a channel of the main measuring member to measure a concentration of carbon dioxide.
The method according to claim 6,
Wherein the main measuring member is formed in a concave shape in an area outside the suction port.
KR1020170073109A 2016-06-14 2017-06-12 Indoor and outdoor fine dust compared measurable device of interlocking smart device KR20170141122A (en)

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KR1020160073514 2016-06-14

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200486786Y1 (en) * 2018-01-05 2018-06-28 문진기 Deck of wood bridge
KR200486788Y1 (en) * 2018-01-05 2018-06-28 문진기 Deck of wood bridge
KR200486787Y1 (en) * 2018-01-05 2018-06-28 문진기 Deck of wood bridge
KR101909589B1 (en) * 2018-04-23 2018-10-18 (주)이노셈코리아 The apparatus and method of the electric display for inforing and display of the concentration of fine dust
KR101991059B1 (en) 2018-03-29 2019-06-20 한국기계연구원 Dust sensor calibrating method and Dust sensor
KR20190097913A (en) 2018-02-13 2019-08-21 (주)포인트엔지니어링 Mobile electro device
KR102088992B1 (en) * 2018-12-12 2020-03-13 주식회사 좋은사람들 Smart clothe having fine dust measuring function
KR102145731B1 (en) * 2020-02-04 2020-08-19 한밭대학교 산학협력단 Mobile fine dust removal equipment for hair loss prevention
WO2021210844A1 (en) * 2020-04-17 2021-10-21 엘지전자 주식회사 Dust sensor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200486786Y1 (en) * 2018-01-05 2018-06-28 문진기 Deck of wood bridge
KR200486788Y1 (en) * 2018-01-05 2018-06-28 문진기 Deck of wood bridge
KR200486787Y1 (en) * 2018-01-05 2018-06-28 문진기 Deck of wood bridge
KR20190097913A (en) 2018-02-13 2019-08-21 (주)포인트엔지니어링 Mobile electro device
KR101991059B1 (en) 2018-03-29 2019-06-20 한국기계연구원 Dust sensor calibrating method and Dust sensor
KR101909589B1 (en) * 2018-04-23 2018-10-18 (주)이노셈코리아 The apparatus and method of the electric display for inforing and display of the concentration of fine dust
KR102088992B1 (en) * 2018-12-12 2020-03-13 주식회사 좋은사람들 Smart clothe having fine dust measuring function
KR102145731B1 (en) * 2020-02-04 2020-08-19 한밭대학교 산학협력단 Mobile fine dust removal equipment for hair loss prevention
WO2021210844A1 (en) * 2020-04-17 2021-10-21 엘지전자 주식회사 Dust sensor

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