WO1991014935A1 - Procede et appareil de controle du nettoyage - Google Patents

Procede et appareil de controle du nettoyage Download PDF

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Publication number
WO1991014935A1
WO1991014935A1 PCT/DK1991/000086 DK9100086W WO9114935A1 WO 1991014935 A1 WO1991014935 A1 WO 1991014935A1 DK 9100086 W DK9100086 W DK 9100086W WO 9114935 A1 WO9114935 A1 WO 9114935A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
dust
adhesive foil
adhesive
exposed
Prior art date
Application number
PCT/DK1991/000086
Other languages
English (en)
Inventor
Ole Holm Petersen
Original Assignee
Abk Bygge- Og Miljøteknik A/S
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 Abk Bygge- Og Miljøteknik A/S filed Critical Abk Bygge- Og Miljøteknik A/S
Publication of WO1991014935A1 publication Critical patent/WO1991014935A1/fr
Priority to NO923521A priority Critical patent/NO923521D0/no
Priority to FI924223A priority patent/FI924223A/fi

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • A47L9/281—Parameters or conditions being sensed the amount or condition of incoming dirt or dust
    • A47L9/2815—Parameters or conditions being sensed the amount or condition of incoming dirt or dust using optical detectors
    • 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
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
    • G01N15/0612—Optical scan of the deposits

Definitions

  • a method and an apparatus for cleaning control are provided.
  • the invention relates to a method of cleaning control by measuring the degree of dirt on a surface by means of a dust collecting adhesive foil, in which an optical measuring is effected of an area of adhesive foil exposed to dust and a comparison of the obtained measuring value with a reference value, and a mesuring apparatus for carrying out the method.
  • the method according to the invention is characterized in that the area of the adhesive foil exposed to dust is placed substantially perpendicular to the radiation axis of a laser beam emitted from a laser beam source which laser beam after passage through the adhesive foil is focused on an intensity measuring photodetector, the output signal of which is fed to a measuring instrument the display of which is compared to the reference value.
  • the measuring apparatus is characterized by comprising a laser beam source with associated optical members for the generation of a beam of substantially parallel laser rays, a holder designed to arrange an adhesive foil dust probe and means for positioning said holder in said parallel beams with the adhesive foil substantially perpendicular to the axis of radiation and means for focusing the beam passing through the adhesive foil holder on an intensity measuring photodetector and a measuring instrument for measuring the output signal of the detector and comparing it to a reference value.
  • the simplification is obtained by merely measuring the quantity of directly transmitted (laser) light, i.e. light that is neither absorbed nor scattered by the dust particles on the adhesive tape.
  • Fig. 1 illustrates a dust-absorbing adhesive tape
  • Fig. 2 is a side elevation of the adhesive tape
  • Fig. 3 is a sketch of a measuring apparatus according to the invention.
  • Fig. 4 illustrates a holder, disposed on a vacuum cleaner pipe, for the exposure of the adhesive foil by measuring the dirt degree of a shaggy surface.
  • the adhesive foil illustrated in Figs 1 and 2 Prior to use the adhesive foil illustrated in Figs 1 and 2 is provided on its adhesive surface with a cover sheet, not shown. Immediately before the exposure of the adhesive foil the cover sheet is removed and a reference measurement of the unexposed adhesive tape is either effected at once, or part of the adhesive tape is maintained unexposed (see Figs 1 and 2) for effecting the reference measurement later on.
  • the exposure on a smooth surface is obtained by pressing the adhesive foil against the surface, the adhesive side facing downwards; on a shaggy surface by arranging the adhesive foil in a holder, illustrated in Fig. 4, inserted in a vacuum cleaner pipe, and subsequent vacuum cleaning of the shaggy surface for a predetermined period.
  • said holder may have a turbulence forming, conical contraction as illustrated in Fig. 4.
  • the adhesive tape After exposure, the adhesive tape is placed in measuring position within the measuring apparatus in Fig. 3, in which laser beams from a laser diode LD by means of lenses L 1 and L 2 are made to impinge on the adhesive foil in a parallel beam at the measuring position S. Part of the incident laser light will then be scattered and part of the light will be absorbed by the dust particles on the adhesive foil, while the remainder by means of a lens L 3 with relatively large focal length (f) will be focused, preferably through a pinhole diaphragm P s , on a detector D s , for measuring the transmitted intensity whose output signal is fed to the measuring instrument M for displaying a measuring figure.
  • a lens L 3 with relatively large focal length (f) preferably through a pinhole diaphragm P s , on a detector D s , for measuring the transmitted intensity whose output signal is fed to the measuring instrument M for displaying a measuring figure.
  • E is the extinction coefficient and A is the area of the projection of dust perpendicular to the light beam.
  • E depends on the ratio between the par ticle size and the wavelength of the light and is close to 2 when this ratio is large (Broomhead et al, 1960). In practice E is an average value determined by the optical properties and the actual size of the particles.
  • Scattered light within 3° from the main beam is by and large merely due to diffraction.
  • ⁇ (pinhole) 0.2 mm, 0.3 mm, 0.6 mm, 1.0 mm, 2.0 mm and 3.0 mm, corresponding to detection angles of 0,024°, 0,036°, 0,072°, 0,12°, 0,24° and 0,36°, respectively, be obtained numeric values giving a rough description of the particle size distribution.
  • the radiation source is preferably a laser diode and the photodetector a photodiode and the apparatus has been made portable by accommodating a battery for power supply to the measuring circuitry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • 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)

Abstract

On décrit un procédé et un appareil de contrôle du nettoyage par la mesure de la quantité de saletés présentes sur une surface au moyen d'une feuille adhésive réceptrice de poussières. On mesure par des moyens optiques une zone de la feuille adhésive exposée aux poussières et on compare la valeur mesurée à une valeur de référence. La mesure optique est réalisée par une source de faisceau laser avec des éléments optiques associés afin de générer un faisceau de rayons laser essentiellement parallèles. On envoie lesdits rayons à travers la feuille adhésive de façon sensiblement perpendiculaire, et on les focalise ensuite sur un détecteur en vue de leur affichage sur un instrument de mesure. L'appareil peut être construit sous une forme portative grâce à la simplicité de ce procédé et de la conception dudit apareil.
PCT/DK1991/000086 1990-03-22 1991-03-20 Procede et appareil de controle du nettoyage WO1991014935A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO923521A NO923521D0 (no) 1990-03-22 1992-09-10 Fremgangsmaate og apparat for rengjoeringskontroll
FI924223A FI924223A (fi) 1990-03-22 1992-09-21 Foerfarande och apparat foer rengoeringskontroll

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK74390A DK163538C (da) 1990-03-22 1990-03-22 Fremgangsmaade og maaleapparat til rengoeringskontrol
DK743/90 1990-03-22

Publications (1)

Publication Number Publication Date
WO1991014935A1 true WO1991014935A1 (fr) 1991-10-03

Family

ID=8097027

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1991/000086 WO1991014935A1 (fr) 1990-03-22 1991-03-20 Procede et appareil de controle du nettoyage

Country Status (3)

Country Link
DK (1) DK163538C (fr)
FI (1) FI924223A (fr)
WO (1) WO1991014935A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000039566A1 (fr) * 1998-12-17 2000-07-06 Act - Advanced Cleaning Technics Ab Instrument et procede de mesure du degre de poussiere et de salete sur une surface
US6850328B1 (en) * 1997-04-18 2005-02-01 Lasse Leirfall Monitoring dust deposition
WO2012007376A1 (fr) * 2010-07-13 2012-01-19 Krämer Ag, Bassersdorf Procédé d'évaluation de particules adhérant à un corps
DE102010040069A1 (de) * 2010-08-31 2012-03-01 GLOBALFOUNDRIES Dresden Module One Ltd. Liability Company & Co. KG Verfahren und System zum Extrahieren von Proben nach der Strukturierung von Mikrostrukturbauelementen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896574A (en) * 1956-05-15 1959-07-28 Larsen Johannes Peter Milking claw for a milking machine
DK172219B1 (da) * 1994-09-23 1998-01-05 Peter Vinzents Støvprøvetagningsudstyr

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402607A (en) * 1980-05-16 1983-09-06 Gca Corporation Automatic detector for microscopic dust on large-area, optically unpolished surfaces
GB2119506A (en) * 1982-03-23 1983-11-16 Canon Kk Inspecting photomasks for dust
US4598997A (en) * 1982-02-15 1986-07-08 Rca Corporation Apparatus and method for detecting defects and dust on a patterned surface
WO1987007024A1 (fr) * 1986-05-05 1987-11-19 Hughes Aircraft Company Procede et appareil d'identification d'une matiere particulaire
DE3626724A1 (de) * 1986-08-07 1988-02-11 Siemens Ag Anordnung zur oberflaechenpruefung
US4767213A (en) * 1986-02-05 1988-08-30 Interlava Ag Optical indication and operation monitoring unit for vacuum cleaners

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402607A (en) * 1980-05-16 1983-09-06 Gca Corporation Automatic detector for microscopic dust on large-area, optically unpolished surfaces
US4598997A (en) * 1982-02-15 1986-07-08 Rca Corporation Apparatus and method for detecting defects and dust on a patterned surface
GB2119506A (en) * 1982-03-23 1983-11-16 Canon Kk Inspecting photomasks for dust
US4767213A (en) * 1986-02-05 1988-08-30 Interlava Ag Optical indication and operation monitoring unit for vacuum cleaners
WO1987007024A1 (fr) * 1986-05-05 1987-11-19 Hughes Aircraft Company Procede et appareil d'identification d'une matiere particulaire
DE3626724A1 (de) * 1986-08-07 1988-02-11 Siemens Ag Anordnung zur oberflaechenpruefung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 11, No. 203, P591; & JP,A,62 025 244, (23-02-1987), HITACHI LTD. *
PATENT ABSTRACTS OF JAPAN, Vol. 12, No. 51, P667; & JP,A,62 197 751, (01-09-1987), TOSHIBA CORP. *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6850328B1 (en) * 1997-04-18 2005-02-01 Lasse Leirfall Monitoring dust deposition
WO2000039566A1 (fr) * 1998-12-17 2000-07-06 Act - Advanced Cleaning Technics Ab Instrument et procede de mesure du degre de poussiere et de salete sur une surface
WO2012007376A1 (fr) * 2010-07-13 2012-01-19 Krämer Ag, Bassersdorf Procédé d'évaluation de particules adhérant à un corps
EP2410317A1 (fr) * 2010-07-13 2012-01-25 Krämer AG Bassersdorf Procédé d'évaluation de particules adhérant à un corps
DE102010040069A1 (de) * 2010-08-31 2012-03-01 GLOBALFOUNDRIES Dresden Module One Ltd. Liability Company & Co. KG Verfahren und System zum Extrahieren von Proben nach der Strukturierung von Mikrostrukturbauelementen
US20120052601A1 (en) * 2010-08-31 2012-03-01 Globalfoundries Inc. Method and System for Extracting Samples After Patterning of Microstructure Devices
US8435885B2 (en) * 2010-08-31 2013-05-07 GlobalFoundries, Inc. Method and system for extracting samples after patterning of microstructure devices

Also Published As

Publication number Publication date
DK163538B (da) 1992-03-09
DK163538C (da) 1992-08-03
DK74390D0 (da) 1990-03-22
FI924223A0 (fi) 1992-09-21
FI924223A (fi) 1992-09-21
DK74390A (da) 1991-09-23

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