JP5489962B2 - 粒子計数方法 - Google Patents
粒子計数方法 Download PDFInfo
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- JP5489962B2 JP5489962B2 JP2010266699A JP2010266699A JP5489962B2 JP 5489962 B2 JP5489962 B2 JP 5489962B2 JP 2010266699 A JP2010266699 A JP 2010266699A JP 2010266699 A JP2010266699 A JP 2010266699A JP 5489962 B2 JP5489962 B2 JP 5489962B2
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- 239000002245 particle Substances 0.000 title claims description 119
- 238000000034 method Methods 0.000 title claims description 19
- 238000001514 detection method Methods 0.000 claims description 29
- 238000005070 sampling Methods 0.000 description 16
- 230000005855 radiation Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
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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
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N15/1429—Electro-optical investigation, e.g. flow cytometers using an analyser being characterised by its signal processing
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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
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N15/1456—Electro-optical investigation, e.g. flow cytometers without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals
- G01N15/1459—Electro-optical investigation, e.g. flow cytometers without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals the analysis being performed on a sample stream
-
- 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
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N2015/1486—Counting the particles
Description
また、特許文献2に記載の粒子計数器においては、浮遊粒子について考慮されず、発生頻度から予測した値を測定値から減算するので、実際と異なることがある。
Claims (4)
- 試料気体に光を照射し、この光が試料気体に含まれる粒子に当たって生じる散乱光を光電変換器で検出し、この光電変換器の出力電圧波形により、粒径区分毎に粒子数を計数する粒子計数方法であって、前記出力電圧波形のピークとなる時点(T1)と立下り検知閾値(A)となる時点(Ta)から時間差(Ta−T1)を求め、この時間差(Ta−T1)が計数キャンセル時間(B)を超えた場合には、前記出力電圧波形を粒子として計数しないことを特徴とする粒子計数方法。
- 試料気体に光を照射し、この光が試料気体に含まれる粒子に当たって生じる散乱光を光電変換器で検出し、この光電変換器の出力電圧波形により、粒径区分毎に粒子数を計数する粒子計数方法であって、前記出力電圧波形にピークが複数ある場合には、夫々のピーク(Px)とその直前のディップ(Dx-1)との電圧差が所定電圧値(C)を超えるピークのなかで、立下り検知閾値(A)となる時点(Ta)と立下り検知閾値(A)の直前のピーク(Pxm)の時点(Txm)から時間差(Ta−Txm)を求め、この時間差(Ta−Txm)が計数キャンセル時間(B)を超えると、前記出力電圧波形を粒子として計数しないことを特徴とする粒子計数方法。
- 請求項2に記載の粒子計数方法において、前記直前のディップ(Dx-1)とピーク(Px)の電圧差が所定電圧値(C)を超えない場合には、前記ピーク(Px)を識別対象にしないことを特徴とする粒子計数方法。
- 請求項1乃至請求項3のいずれかに記載の粒子計数方法において、前記立下り検知閾値(A)、前記計数キャンセル時間(B)、前記所定電圧値(C)は夫々変更可能であることを特徴とする粒子計数方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010266699A JP5489962B2 (ja) | 2010-11-30 | 2010-11-30 | 粒子計数方法 |
US13/307,318 US8497989B2 (en) | 2010-11-30 | 2011-11-30 | Particle counting method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010266699A JP5489962B2 (ja) | 2010-11-30 | 2010-11-30 | 粒子計数方法 |
Publications (2)
Publication Number | Publication Date |
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JP2012117882A JP2012117882A (ja) | 2012-06-21 |
JP5489962B2 true JP5489962B2 (ja) | 2014-05-14 |
Family
ID=46126440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010266699A Active JP5489962B2 (ja) | 2010-11-30 | 2010-11-30 | 粒子計数方法 |
Country Status (2)
Country | Link |
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US (1) | US8497989B2 (ja) |
JP (1) | JP5489962B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9857284B1 (en) * | 2013-07-15 | 2018-01-02 | Stratedigm, Inc. | Method and apparatus for detection and measurement of particles with a wide dynamic range of measurement |
JP6233711B2 (ja) * | 2014-04-25 | 2017-11-22 | パナソニックIpマネジメント株式会社 | 粒子測定装置 |
JP2016128795A (ja) * | 2015-01-09 | 2016-07-14 | パナソニックIpマネジメント株式会社 | 粒子測定装置、空気清浄機、及び、粒子測定方法 |
JP6030740B1 (ja) * | 2015-12-03 | 2016-11-24 | リオン株式会社 | パーティクルカウンタ |
JP6954800B2 (ja) * | 2016-11-22 | 2021-10-27 | リオン株式会社 | 生物粒子計数システムおよび生物粒子計数方法 |
JP6571709B2 (ja) * | 2017-03-17 | 2019-09-04 | 日立グローバルライフソリューションズ株式会社 | 粒子測定装置及び空気清浄機 |
JP7208468B2 (ja) | 2018-08-01 | 2023-01-19 | 株式会社Jvcケンウッド | 分析装置及び分析方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63149541A (ja) * | 1986-12-12 | 1988-06-22 | Kowa Co | 流体中の粒子計測装置 |
JPH05209822A (ja) * | 1992-01-30 | 1993-08-20 | Hitachi Ltd | 粒子計数装置 |
US5246002A (en) * | 1992-02-11 | 1993-09-21 | Physio-Control Corporation | Noise insensitive pulse transmittance oximeter |
JPH0735678A (ja) * | 1993-07-20 | 1995-02-07 | Ushio Inc | パーティクルセンサーヘッド |
JP3265080B2 (ja) * | 1993-10-05 | 2002-03-11 | 株式会社日立製作所 | パルス信号測定方法 |
US5870190A (en) * | 1997-11-25 | 1999-02-09 | Venturedyne, Ltd. | Particle sensor and related method offering improved particle discrimination |
US6563585B1 (en) * | 1999-11-24 | 2003-05-13 | University Of Maryland Biotechnology Institute | Ratiometric fluorometer |
ITTO20010588A1 (it) * | 2001-06-18 | 2002-12-18 | Infm Istituto Naz Per La Fisi | Procedimento per la misurazione di proprieta' di particelle immerse in un corpo, e relativa apparecchiatura. |
US6678049B1 (en) * | 2001-07-16 | 2004-01-13 | Art, Advanced Research Technologies Inc. | Optical detection system and method |
JP3995684B2 (ja) | 2004-12-21 | 2007-10-24 | リオン株式会社 | 粒子計数器 |
JP2006189337A (ja) * | 2005-01-06 | 2006-07-20 | Fuji Electric Systems Co Ltd | 微粒子測定装置 |
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2010
- 2010-11-30 JP JP2010266699A patent/JP5489962B2/ja active Active
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2011
- 2011-11-30 US US13/307,318 patent/US8497989B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2012117882A (ja) | 2012-06-21 |
US20120133936A1 (en) | 2012-05-31 |
US8497989B2 (en) | 2013-07-30 |
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