KR200363865Y1 - A particle sensor which distinguishes the size and kind of the particles. - Google Patents

A particle sensor which distinguishes the size and kind of the particles. Download PDF

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Publication number
KR200363865Y1
KR200363865Y1 KR20040019719U KR20040019719U KR200363865Y1 KR 200363865 Y1 KR200363865 Y1 KR 200363865Y1 KR 20040019719 U KR20040019719 U KR 20040019719U KR 20040019719 U KR20040019719 U KR 20040019719U KR 200363865 Y1 KR200363865 Y1 KR 200363865Y1
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South Korea
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light
particles
receiving unit
unit
scattered
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KR20040019719U
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Korean (ko)
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김경우
구본주
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(주)니즈
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
    • G01N15/0211—Investigating a scatter or diffraction pattern
    • 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • 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
    • G01N21/85—Investigating moving fluids or granular solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N2015/0096—Investigating consistence of powders, dustability, dustiness
    • 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
    • G01N21/85—Investigating moving fluids or granular solids
    • G01N2021/8592—Grain or other flowing solid samples

Abstract

본 고안은 꽃가루 및 대기중의 부유 입자가 가지고 있는 빛에 대한 고유의 흡수 스펙트럼 특성을 이용하여, 검출하고자 하는 입자에 의해 산란된 빛과 투과된 빛에 의한 출력 파형의 적분치를 마이컴으로 처리하여, 대기중에 부유하는 꽃가루 및 부유 입자의 크기와 종류의 구분이 가능한 파티클 센서에 관한 것이다.The present invention uses the inherent absorption spectrum characteristic of the light of the pollen and the suspended particles in the air, by processing the integral value of the output waveform by the light scattered and transmitted by the particles to be detected by a microcomputer, The present invention relates to a particle sensor capable of distinguishing the size and type of pollen and suspended particles suspended in the atmosphere.

이에 따른 본 고안은, 검출할 입자(10)에 자외선 파장의 빛을 조사하는 발광부(1), 발광부의 빛을 집광하는 렌즈 1(2), 입자에 의한 산란광을 검출하는 수광부 1(3), 수광부 1에 들어가는 빛을 집광하는 렌즈 2(4), 입자에 의해 흡수 및 산란이 이루어진 후 투과광을 검출하는 수광부 2(5), 수광부 2에 들어가는 빛을 집광하는 렌즈 3(6), 이러한 광학부를 포함한 기구물(20), 수광부 1과 수광부 2에서 감지된 빛을 데이터화 하여 그 신호를 검출하고, 노이즈의 필터링 및 신호를 증폭하는 검출 및 증폭부(30), 증폭된 2종류의 아날로그 신호를 받아 적분치를 계산하고 출력을 내주는 마이컴(40) 으로 구성된 것이다.According to the present invention, the light emitting unit 1 for irradiating light of ultraviolet wavelength to the particle 10 to be detected, the lens 1 (2) for collecting light of the light emitting unit, and the light receiving unit 1 (3) for detecting scattered light by the particles A lens 2 (4) for collecting light entering the light receiving unit 1, a light receiving unit 2 (5) for detecting transmitted light after being absorbed and scattered by particles, a lens 3 (6) for collecting light entering the light receiving unit 2, and such optical Receiving the signal 20 and the light detected by the light receiving unit 1 and the light receiving unit 2, including the unit to detect the signal, filtering and amplifying unit 30 for filtering and amplifying the signal, and receives the amplified two kinds of analog signals It is composed of a microcomputer 40 for calculating the integral value and giving an output.

Description

입자의 크기 및 종류 구분이 가능한 파티클 센서 {A particle sensor which distinguishes the size and kind of the particles.}A particle sensor which distinguishes the size and kind of the particles.

본 고안은 대기중에 존재하는 꽃가루 및 부유입자를 감지하여, 크기 및 종류, 대기중의 농도를 판별하는 파티클 센서에 관한 것이다.The present invention relates to a particle sensor that detects pollen and suspended particles present in the atmosphere, and determines the size and type, the concentration in the atmosphere.

더욱 상세하게는 꽃가루 및 부유물질이 가지고 있는 자외선에 대한 고유의 흡수율에 의하여 투과되는 빛의 변화를 감지하고, 입자 크기에 따라 산란광에 의한 고유의 출력 신호를 마이컴으로 적분하여 부유물질의 종류 및 크기, 대기중 부유 농도를 검출하는 파티클 센서에 관한 것이다.More specifically, it detects the change of light transmitted by the intrinsic absorption rate to the ultraviolet rays of pollen and the suspended solids, and integrates the unique output signal of the scattered light with a microcomputer according to the particle size, and the type and size of the suspended solids. It relates to a particle sensor for detecting the suspended concentration in the atmosphere.

일반적으로 대기중에 부유하는 입자는 미세먼지(10㎛미만의 크기)와 계절마다 변화되는 꽃가루와 황사로 크게 구분된다. 종래의 입자를 감지하는 장치는 대기중이나 또는 실내의 미세 먼지에 의해 산란되는 빛을 감지하여 정량적인 농도를 제공해 준다.In general, particles suspended in the atmosphere are classified into fine dust (size less than 10㎛) and pollen and yellow sand that change with each season. Conventional particle sensing devices provide quantitative concentration by detecting light scattered by fine dust in the atmosphere or in the room.

하지만 이러한 입자 감지기는 입자의 종류에 대한 판별이 불가능하므로 봄에 발생하는 송화가루 및 황사에 의한 대기중 부유물질의 변화 원인을 판별할 수 없다. 또한 종래의 입자를 감지하는 장치는 매우 고가의 장치로 가전제품으로 사용이 어려운 문제점을 가지고 있다.However, these particle detectors cannot determine the type of particles, so it is not possible to determine the cause of the change of suspended solids in the air caused by calendula and yellow dust in spring. In addition, the conventional device for detecting particles has a problem that is difficult to use as a home appliance as a very expensive device.

따라서, 본 고안은 상기의 제반 문제를 해결하기 위해 창출된 것으로서 그 목적은 꽃가루나 부유입자의 크기 및 종류, 부유 농도를 판별함으로서 대기중이나 실내의 부유물에 의한 오염원과 오염 수위를 알려주는 저가의 파티클 센서를 제공하는데 있다.Therefore, the present invention was created to solve the above problems, and its purpose is to determine the size and type of pollen or suspended particles, and the concentration of suspended particles, thereby informing the source and level of pollution caused by airborne or indoor suspended solids. To provide a sensor.

도 1은 본 고안에 따른 파티클 센서의 광학부이다.1 is an optical part of a particle sensor according to the present invention.

도 2는 본 고안에 따른 광학부의 단면도이다.2 is a cross-sectional view of the optical unit according to the present invention.

도 3는 본 고안에 따른 신호 처리부 구성도이다.3 is a block diagram of a signal processor according to the present invention.

도 4는 파티클 센서의 수광부 1(3)과 수광부 2(5)의 증폭된 아나로그 신호 파형이다.4 is an amplified analog signal waveform of the light receiving unit 1 (3) and the light receiving unit 2 (5) of the particle sensor.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1 : 발광부1: light emitting unit

2 : 발광부 집광렌즈2 light condensing lens

3 : 수광부 13: light receiver 1

4 : 수광부 1 집광렌즈4: light-receiving part 1 condenser lens

5 : 수광부 25: light receiver 2

6 : 수광부 2 집광렌즈6: light-receiving part 2 condenser lens

10 : 검출 입자10: detection particle

20 : 광학부 기구물20: optical unit

30 : 증폭회로부30: amplification circuit part

40 : 신호처리부(마이컴)40: signal processing unit (microcomputer)

50 : PCB50: PCB

60 : 입자 유입구60: particle inlet

상기 목적을 달성하기 위한 본 고안에 따른 파티클 센서는, 검출하고자 하는 입자에 파장이 300~400nm의 자외선의 빛을 조사해주는 UV 램프로 구성된 발광부(1)와 발광부의 빛을 집광하여 보내주는 집광렌즈 1(2)과;Particle sensor according to the present invention for achieving the above object, the light condensing unit 1 consisting of a UV lamp for irradiating the light of ultraviolet rays of 300 ~ 400nm wavelength to the particles to be detected and condensing light Lens 1 (2);

유입구(60)를 통하여 기구물(20) 내로 유입된 입자에 의해 산란된 빛을 검출하는 포토다이오드로 구성된 수광부 1(3), 수광부 1로 들어오는 빛을 집광시켜주는 집광렌즈 2(4)와;A light receiving unit 1 (3) consisting of a photodiode for detecting light scattered by particles introduced into the apparatus 20 through the inlet 60, and a light collecting lens 2 (4) for condensing the light entering the light receiving unit 1;

유입구(60)를 통하여 기구물(20)내로 유입된 입자에 의해 흡수 및 산란된 빛을 제외하고 직접 투과되는 빛을 검출하는 포토다이오드로 구성된 수광부 2(5), 수광부 2로 들어오는 빛을 집광시켜주는 집광렌즈 3(6)과;Condensing the light entering the light receiving unit 2 (5), consisting of a photodiode for detecting the light directly transmitted except the light absorbed and scattered by the particles introduced into the apparatus 20 through the inlet (60), Condenser lens 3 (6);

상기 광학부를 포함하는 기구물(20), 기구물과 이어져 광학 부품 및 회로부 부품이 조립되는 PCB(50)와, 산란 및 투과된 빛에 의해 포토다이오드에서 감지되는 출력신호를 증폭하는 증폭부(30), 증폭된 신호를 받아 적분 및 연산으로 신호처리 하는 마이컴(40)으로 구성된 것을 특징으로 한다.The apparatus 20 including the optical unit, a PCB 50 to which the optical unit and the circuit unit parts are assembled, and an amplifying unit 30 amplifying an output signal detected by the photodiode by scattered and transmitted light; It is characterized by consisting of a microcomputer 40 for receiving the amplified signal and processing the signal by integration and operation.

이하 본 고안의 실시예를 첨부한 도면에 의거 보다 상세하게 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 고안에 따른 파티클 센서의 광학부이다.1 is an optical part of a particle sensor according to the present invention.

도 2는 파티클 센서 광학부의 단면도이다.2 is a cross-sectional view of the particle sensor optics.

도 3은 파티클 센서의 신호처리부의 구성도이다.3 is a block diagram of a signal processing unit of a particle sensor.

도 4는 파티클 센서의 수광부 1(3)과 수광부 2(5)의 증폭된 아나로그 신호 파형이다.4 is an amplified analog signal waveform of the light receiving unit 1 (3) and the light receiving unit 2 (5) of the particle sensor.

상기 파티클 센서에 입자가 유입되지 않은 상태에서, 산란광을 검출하는 수광부 1(3)의 포토다이오드 출력파형은 도 4처럼 오프셋(offset) 전압을 나타내고, 센서 내부로 입자가 유입되어 산란광이 수광부 1(3)의 포토다이오드에 의해 검출되면 출력피크치 H와 출력 폭(W)를 갖는 출력파형이 감지된다. 마이컴(40)은 산란광에 의해 검출된 출력파형을 적산하여 면적 A를 계산한다.In the state where the particles do not flow into the particle sensor, the photodiode output waveform of the light receiver 1 (3) for detecting the scattered light exhibits an offset voltage as shown in FIG. When detected by the photodiode of 3), an output waveform having an output peak value H and an output width W is detected. The microcomputer 40 calculates the area A by integrating the output waveform detected by the scattered light.

파티클 센서에 입자가 유입되지 않은 상태에서, 투과광을 검출하는 수광부 2(5)의 포토다이도드 출력 파형은 도 4처럼 오프셋(offset) 전압을 나타내고, 센서 내부로 입자가 유입되어 투과광이 변화하게 되면 수광부 2(5)의 포토 다이오드에 의해 검출된 출력파형은 도 4처럼 나타난다. 마이컴(40)은 투과광 변화에 의해 검출된 출력파형을 적산하여 면적 A'를 계산한다.When the particles do not flow into the particle sensor, the photodiode output waveform of the light receiving unit 2 (5) detecting the transmitted light shows an offset voltage as shown in FIG. 4, and when the particles enter the sensor and the transmitted light changes. The output waveform detected by the photodiode of the light receiving portion 2 (5) is shown in FIG. The microcomputer 40 calculates the area A 'by integrating the output waveform detected by the transmitted light change.

본 고안의 광학부에 검출된 입자의 흡수율은 마이컴(40)에 의해 상기 수광부에 의해 검출된 산란광의 적산치 A와 투과광의 적산치 A'의 비(A/A')로 연산된다.The absorption rate of the particles detected by the optical unit of the present invention is calculated by the ratio (A / A ') of the integrated value A of the scattered light and the integrated value A' of the transmitted light detected by the light receiving unit by the microcomputer 40.

본 고안의 광학부에 검출된 입자의 크기는 산란광에 의해 검출된 출력파형의 폭(W)과 높이(H)에 의해 마이컴(40)에 의해 연산된다.The size of the particle detected by the optical unit of the present invention is calculated by the microcomputer 40 by the width W and the height H of the output waveform detected by the scattered light.

본 고안의 광학부 의해 검출된 입자의 부유농도는 산란광에 의해 검출된 출력파형의 적산치(A)의 합으로 마이컴(40)에 의해 연산된다.The suspended concentration of the particles detected by the optical unit of the present invention is calculated by the microcomputer 40 by the sum of the integrated values A of the output waveforms detected by the scattered light.

본 고안은 상기와 같이 검출된 신호와 마이컴 내부에 입력되어 있는 특정 부유 입자의 데이터 값을 비교처리하여 검지된 입자에 대한 크기, 종류, 농도를 판단하는 파티클 센서에 관한 것이다.The present invention relates to a particle sensor for determining the size, type, and concentration of the detected particles by comparing the signal detected as described above and the data values of the specific suspended particles input into the microcomputer.

이상에서 설명한 바와 같이 본 고안은, 대기중 부유하는 입자에 의해 검출된 산란광과 투과광의 출력신호를 처리하여 입자의 크기, 종류, 농도를 판단하는 파티클 센서로서, 광학부를 구성하는 기구물과, 기구물에 연결되어 회로부를 구성하는 PCB를 포함하는 간단한 구조로서 실내 및 대기중에 부유하는 입자에 대한 정보를 쉽게 판별 할 수 있어 가전 및 환경산업로 응용이 용이한 파티클 센서이다.As described above, the present invention is a particle sensor that processes the output signals of scattered light and transmitted light detected by particles suspended in the air, and determines particle size, type, and concentration. It is a simple structure that includes a PCB that is connected to constitute a circuit part. It is a particle sensor that can be easily identified as information on particles suspended in indoors and the air and is easily applied to home appliances and environmental industries.

Claims (2)

대기중 부유하는 입자를 검출하기 위하여 구성된 자외선 발광부(1), 입자에 의해 산란된 빛을 검출하는 포토다이오드로 구성된 수광부 1(3), 입자에 의해 산란 및 흡수된 후 투과된 빛을 검출하는 포토다이오드로 구성된 수광부 2(5),Ultraviolet light emitting unit 1 configured to detect particles suspended in the atmosphere, light receiving unit 1 (3) composed of photodiodes for detecting light scattered by the particles, and detecting light transmitted after being scattered and absorbed by the particles. Light-receiving unit 2 (5) consisting of a photodiode, 수광부에서 검출된 신호의 노이즈를 제거하고, 증폭하는 증폭부(30), 증폭된 아나로그 신호를 연산처리하는 마이컴(40),An amplification unit 30 which removes noise of the signal detected by the light receiving unit and amplifies, a microcomputer 40 which performs arithmetic processing on the amplified analog signal, 입자의 유입구(60)와 함께 광학부를 포함하는 기구물(20), 기구물과 연결되어 회로부를 포함하는 PCB(50)로 구성되는 것을 특징으로 하는 파티클 센서.Particle sensor, characterized in that consisting of a device (20) comprising an optical portion with an inlet (60) of the particles, the PCB (50) connected to the device and comprises a circuit portion. 제 1항에 있어서,The method of claim 1, 부유 입자에 의한 산란광과 투과광에 의해 검출된 신호를 마이컴으로 연산처리하여 입자의 크기, 종류, 농도를 판별하는 것을 특징으로 하는 파티클 센서.Particle sensor, characterized in that the size, type, and concentration of the particles are determined by arithmetic processing the signal detected by the scattered light and transmitted light by the suspended particles.
KR20040019719U 2004-07-12 2004-07-12 A particle sensor which distinguishes the size and kind of the particles. KR200363865Y1 (en)

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