Processing

Please wait...

Settings

Settings

Goto Application

1. WO2016105555 - PORTABLE AIRBORNE PARTICLE COUNTING SYSTEMS AND METHODS

Publication Number WO/2016/105555
Publication Date 30.06.2016
International Application No. PCT/US2015/000432
International Filing Date 28.12.2015
IPC
G01N 21/53 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
47Scattering, i.e. diffuse reflection
49within a body or fluid
53within a flowing fluid, e.g. smoke
G01N 15/02 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
02Investigating particle size or size distribution
G01N 15/14 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
10Investigating individual particles
14Electro-optical investigation
CPC
G01N 15/0205
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
02Investigating particle size or size distribution
0205by optical means, e.g. by light scattering, diffraction, holography or imaging
G01N 15/1459
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
10Investigating individual particles
14Electro-optical investigation, e.g. flow cytometers
1456without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals
1459the analysis being performed on a sample stream
G01N 2015/1493
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
10Investigating individual particles
14Electro-optical investigation, e.g. flow cytometers
1493Particle size
Applicants
  • THE REGENTS OF THE UNIVERSITY OF CALIFORNIA [US]/[US]
Inventors
  • PAULOS, Eric
  • TIAN, Rundong
  • DIERK, Christie
  • MYERS, Chris
Agents
  • GRAY, Gerald, T.
Priority Data
62/096,37123.12.2014US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) PORTABLE AIRBORNE PARTICLE COUNTING SYSTEMS AND METHODS
(FR) SYSTÈMES ET PROCÉDÉS DE COMPTAGE DE PARTICULES EN SUSPENSION DANS L'AIR PORTABLES
Abstract
(EN) Particle counting devices and methods. A particle counting device includes a housing structure defining an enclosed flow path and having an air inlet region and an air outlet region, a light source that emits a beam of light, and a photodetector having a sensing region that intersects the beam of light. In operation, an air flow received at the inlet region is directed (pushed or pulled) towards the outlet region through the sensing region, wherein particles in the air flow scatter the beam of light when in the sensing region, and wherein the photodetector detects scattered light and produces a detection signal representative of airborne particles detected, such as sizes and counts.
(FR) L'invention concerne des dispositifs et des procédés de comptage de particules. Un dispositif de comptage de particules comprend une structure de boîtier définissant un trajet d'écoulement fermé et comportant une zone d'admission d'air et une zone de sortie d'air, une source de lumière qui émet un faisceau de lumière, et un photodétecteur comportant une région de détection qui coupe le faisceau de lumière. En fonctionnement, un flux d'air reçu au niveau de la zone d'entrée est dirigé (poussé ou tiré) vers la zone de sortie à travers la région de détection, des particules dans l'écoulement d'air diffusant le faisceau de lumière lorsqu'il se trouve dans la région de détection et le photodétecteur détectant la lumière diffusée et produisant un signal de détection représentatif des particules en suspension dans l'air détectées, tel que leur taille et leur nombre.
Latest bibliographic data on file with the International Bureau