SE9000039D0 - DEVICE FOR THE DETECTION OF PARTICLES IN STREAMING MEDIA - Google Patents

DEVICE FOR THE DETECTION OF PARTICLES IN STREAMING MEDIA

Info

Publication number
SE9000039D0
SE9000039D0 SE9000039A SE9000039A SE9000039D0 SE 9000039 D0 SE9000039 D0 SE 9000039D0 SE 9000039 A SE9000039 A SE 9000039A SE 9000039 A SE9000039 A SE 9000039A SE 9000039 D0 SE9000039 D0 SE 9000039D0
Authority
SE
Sweden
Prior art keywords
light
rings
detector
particles
channel
Prior art date
Application number
SE9000039A
Other languages
Swedish (sv)
Other versions
SE465338B (en
SE9000039L (en
Inventor
L Leonardsson
Original Assignee
Abb Stal Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abb Stal Ab filed Critical Abb Stal Ab
Priority to SE9000039A priority Critical patent/SE465338B/en
Publication of SE9000039D0 publication Critical patent/SE9000039D0/en
Priority to AU70572/91A priority patent/AU7057291A/en
Priority to CA 2072743 priority patent/CA2072743A1/en
Priority to EP19910902809 priority patent/EP0509045A1/en
Priority to PCT/SE1990/000858 priority patent/WO1991010123A1/en
Priority to JP91502575A priority patent/JPH05502943A/en
Publication of SE9000039L publication Critical patent/SE9000039L/en
Publication of SE465338B publication Critical patent/SE465338B/en
Priority to FI923094A priority patent/FI923094A0/en

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • G01N2015/0238—Single particle scatter
    • 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
    • G01N2021/4704—Angular selective
    • G01N2021/4711—Multiangle measurement
    • G01N2021/4716—Using a ring of sensors, or a combination of diaphragm and sensors; Annular sensor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Glass Compositions (AREA)
  • Optical Measuring Cells (AREA)

Abstract

A laser (1) is applied on the side of a channel which is traversed by a medium. The light beam from the laser (1) passes across the channel. Particles (5) in the medium within the measuring volume are hit by light and deflect this, thus creating forwardly-directed light cones. These light cones are refracted outside the channel by a lens (6) and thereafter hit a detector plate (8). The light which hits the detector plate (8) occurs in the form of light rings which have arisen by light diffraction. On the detector plate (8) at least two detector rings are arranged, consisting of light-sensitive elements adapted to measure the light power in those light rings which fall onto the light-sensitive elements. In an electronic differentiating unit (9) a difference is created between the measured light power values from two of these detector rings. This results in a difference signal which can be related to the size distribution of particles occurring in the flowing medium.
SE9000039A 1990-01-05 1990-01-05 SET AND DEVICE FOR THE DETECTION OF PARTICLES IN STREAMING MEDIA SE465338B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE9000039A SE465338B (en) 1990-01-05 1990-01-05 SET AND DEVICE FOR THE DETECTION OF PARTICLES IN STREAMING MEDIA
AU70572/91A AU7057291A (en) 1990-01-05 1990-12-20 Method and device for detection of particles in flowing media
CA 2072743 CA2072743A1 (en) 1990-01-05 1990-12-20 Method and device for detection of particles in flowing media
EP19910902809 EP0509045A1 (en) 1990-01-05 1990-12-20 Method and device for detection of particles in flowing media
PCT/SE1990/000858 WO1991010123A1 (en) 1990-01-05 1990-12-20 Method and device for detection of particles in flowing media
JP91502575A JPH05502943A (en) 1990-01-05 1990-12-20 Method and apparatus for detecting particles in a fluid medium
FI923094A FI923094A0 (en) 1990-01-05 1992-07-03 PROOF OF ORIGINATION DETECTING FROM PARTICULAR I AND FLYTAND MEDIUM.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9000039A SE465338B (en) 1990-01-05 1990-01-05 SET AND DEVICE FOR THE DETECTION OF PARTICLES IN STREAMING MEDIA

Publications (3)

Publication Number Publication Date
SE9000039D0 true SE9000039D0 (en) 1990-01-05
SE9000039L SE9000039L (en) 1991-07-06
SE465338B SE465338B (en) 1991-08-26

Family

ID=20378173

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000039A SE465338B (en) 1990-01-05 1990-01-05 SET AND DEVICE FOR THE DETECTION OF PARTICLES IN STREAMING MEDIA

Country Status (6)

Country Link
EP (1) EP0509045A1 (en)
AU (1) AU7057291A (en)
CA (1) CA2072743A1 (en)
FI (1) FI923094A0 (en)
SE (1) SE465338B (en)
WO (1) WO1991010123A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9301446A (en) * 1993-08-20 1995-03-16 Univ Delft Tech Method and device for measuring shape properties of particles.
US5831730A (en) * 1996-12-06 1998-11-03 United Sciences, Inc. Method for monitoring particulates using beam-steered solid-state light source
DE19912911C2 (en) * 1999-03-22 2001-07-19 Schako Metallwarenfabrik Device for detecting smoke
DE10136555A1 (en) 2001-07-27 2003-02-13 Boehringer Ingelheim Int Method for determining the size distribution of particles in an aerosol, especially particles of a medicament involves mixing of a carrier medium with the medicament to produce an appropriately conditioned aerosol
CN107941662B (en) * 2017-11-10 2020-01-21 吉林大学 Device and method for detecting distribution of particles in flame by using intense field laser
EP3588055A1 (en) 2018-06-21 2020-01-01 Koninklijke Philips N.V. Laser sensor module with indication of readiness for use

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595291A (en) * 1982-10-15 1986-06-17 Tokyo Shibaura Denki Kabushiki Kaisha Particle diameter measuring device
DE3575470D1 (en) * 1985-06-07 1990-02-22 Fritsch Gmbh DEVICE FOR DETERMINING GRAIN SIZES.
GB8624587D0 (en) * 1986-10-14 1986-11-19 North Sea Instr Ltd Particle analysis apparatus
GB2204678A (en) * 1987-03-26 1988-11-16 Joshua Swithenbank Size and velocity measuring instrument for multiphase flows
GB2203542A (en) * 1987-04-14 1988-10-19 Secr Defence Measuring particle size distribution

Also Published As

Publication number Publication date
SE465338B (en) 1991-08-26
WO1991010123A1 (en) 1991-07-11
FI923094A (en) 1992-07-03
AU7057291A (en) 1991-07-24
SE9000039L (en) 1991-07-06
FI923094A0 (en) 1992-07-03
EP0509045A1 (en) 1992-10-21
CA2072743A1 (en) 1991-07-06

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