DK163538B - PROCEDURE AND CLEANING CONTROL MEASUREMENT - Google Patents

PROCEDURE AND CLEANING CONTROL MEASUREMENT Download PDF

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Publication number
DK163538B
DK163538B DK74390A DK74390A DK163538B DK 163538 B DK163538 B DK 163538B DK 74390 A DK74390 A DK 74390A DK 74390 A DK74390 A DK 74390A DK 163538 B DK163538 B DK 163538B
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DK
Denmark
Prior art keywords
dust
adhesive film
measuring
adhesive
reference value
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Application number
DK74390A
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Danish (da)
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DK74390D0 (en
DK74390A (en
DK163538C (en
Inventor
Ole Holm Petersen
Original Assignee
Abk Bygge & Miljoeteknik
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Application filed by Abk Bygge & Miljoeteknik filed Critical Abk Bygge & Miljoeteknik
Priority to DK74390A priority Critical patent/DK163538C/en
Publication of DK74390D0 publication Critical patent/DK74390D0/en
Priority to PCT/DK1991/000086 priority patent/WO1991014935A1/en
Publication of DK74390A publication Critical patent/DK74390A/en
Publication of DK163538B publication Critical patent/DK163538B/en
Application granted granted Critical
Publication of DK163538C publication Critical patent/DK163538C/en
Priority to NO923521A priority patent/NO923521D0/en
Priority to FI924223A priority patent/FI924223A/en

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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

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  • 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)

Description

DK 163538 BDK 163538 B

Opfindelsen angår en fremgangsmåde til rengøringskontrol ved måling af tilsmudsningsgraden af en overflade ved hjælp af en støvoptagende klæbefolie, ved hvilken der foretages en optisk måling af et støvekspo-5 neret område på klæbefolien og en sammenligning af den herved opnåede måleværdi med en referenceværdi, og et måleapparat til udøvelse af fremgangsmåden.The invention relates to a method of cleaning control by measuring the degree of soiling of a surface by means of a dust-absorbing adhesive film, in which an optical measurement of a dust-exposed area of the adhesive film and a comparison of the measured value obtained with a reference value is made. measuring apparatus for carrying out the method.

Der kendes fremgangsmåder og måleapparater af den nævnte art, hvor den optiske måling sædvanligvis 10 baserer sig på måling af diffust-transmitteret lys og hvor der foretages en analyse af størrelsen og mængden af partikler på klæbefolien ofte ved hjælp af avanceret billeddataanalyseudstyr. Disse typer måleapparater er imidlertid dyre og udpræget stationære, således at en 15 måling af rengøringskvaliteten ikke kan foretages på stedet, hvor klæbefolien eksponeres.Methods and measuring devices of the kind known are known, in which the optical measurement is usually based on the measurement of diffusely transmitted light and where the size and amount of particles on the adhesive film are often carried out by means of advanced image data analysis equipment. However, these types of metering devices are expensive and distinctly stationary, so that a cleaning quality measurement cannot be made at the location where the adhesive film is exposed.

Fremgangsmåden ifølge opfindelsen er ejendommelig ved, at det støveksponerede område af klæbefolien anbringes i det væsentlige vinkelret på strålingsaksen 20 i et fra en laserstrålingskilde udsendt laserstrålebundt, som efter passagen gennem klæbefolien fokuseres på en intensitetsmålende fotodetektor, hvis udgangssignal føres til et måleinstrument, hvis visning sammenlignes med referenceværdien.The method of the invention is characterized in that the dust-exposed area of the adhesive film is disposed substantially perpendicular to the radiation axis 20 in a laser beam beam emitted from a laser radiation source, which, after passing through the adhesive film, is focused on an intensity measuring photodetector whose output signal is fed to a measuring signal, with the reference value.

25 Herved opnås en væsentlig forenkling af målingen uden nævneværdige tab i nøjagtighed og reproducerbarhed af målingerne.25 This results in a substantial simplification of the measurement without significant losses in the accuracy and reproducibility of the measurements.

Måleapparatet ifølge opfindelsen er ejendommelig ved, at det omfatter en laserstrålingskilde med tilhø-30 rende optiske elementer til frembringelse af et i det væsentlige parallelt bundt af laserstråler, en til anbringelse af en støvoptagende klæbefolie udformet holder og midler til anbringelse af denne i nævnte parallelle strålebundt med klæbefolien i det væsentlige vin-35 kelret på strålingsaksen samt midler til fokusering af det gennem klæbefolieholderen passerede strålebundt påThe measuring apparatus according to the invention is characterized in that it comprises a laser radiation source with associated optical elements for producing a substantially parallel bundle of laser beams, a holder for forming a dust-absorbing adhesive film and means for placing it in said parallel beam of radiation. with the adhesive film substantially angular to the radiation axis as well as means for focusing the beam of radiation passing through the adhesive film holder onto the

DK 163538 BDK 163538 B

2 en intensitetsmålende fotodetektor og et måleinstrument til måling af detektorens udgangssignal og sammenligning af dette med en referenceværdi.2 shows an intensity measuring photodetector and a measuring instrument for measuring the detector's output signal and comparing this with a reference value.

Herved gøres det muligt at udforme måleapparatet 5 i en billig, enkelt fungerende, bærbar udgave, således at rengøringskontrollen kan foretages hurtigt og på stedet.This makes it possible to design the measuring apparatus 5 in a cheap, simple-to-operate, portable version, so that the cleaning check can be done quickly and on site.

Forenklingen opnås ved, at man i stedet for at foretage en grundig analyse af mængden og størrelsen af 10 støvpartikler på klæbefolien blot foretager en måling af mængden af direkte transmitteret (laser-) lys, dvs. lys, der hverken absorberes eller spredes af støvpartiklerne på klæbefolien.The simplification is achieved by the fact that instead of a thorough analysis of the amount and size of 10 dust particles on the adhesive film, one simply measures the amount of direct transmitted (laser) light, ie. light that is neither absorbed nor scattered by the dust particles on the adhesive film.

Opfindelsen og dens foretrukne udførelsesformer 15 forklares nærmere i det følgende under henvisning til tegningen, hvor fig. 1 viser en støvoptagende klæbefolie, fig. 2 klæbefolien set fra siden, fig. 3 en skitse af et måleapparat ifølge opfin-20 delsen, og fig. 4 en holder til eksponering af klæbefolien ved måling af tilsmudsningsgraden af en lådden overflade, anbragt på et støvsugerrør.The invention and its preferred embodiments 15 will be explained in more detail below with reference to the accompanying drawing, in which: FIG. 1 shows a dust-absorbing adhesive film; FIG. 2 is a side view of the adhesive film; FIG. 3 is a sketch of a measuring apparatus according to the invention; and FIG. 4 shows a holder for exposing the adhesive film by measuring the degree of soiling of a laminated surface, placed on a vacuum cleaner tube.

Den på fig. 1 og 2 viste klæbefolie er indtil 25 den tages i brug forsynet med en ikke vist dækfolie på klæbesiden. Umiddelbart før eksponering af klæbefolien fjernes dækfolien og der foretages enten straks en referencemåling af den ueksponerede klæbefolie, eller en del af klæbefolien bibeholdes ueksponeret (se fig. l og 30 2) for senere referencemåling.The FIG. The adhesive film shown in paragraphs 1 and 2 is provided with a cover film not shown on the adhesive side until it is used. Immediately prior to exposure of the adhesive film, the cover film is removed and either a reference measurement of the unexposed adhesive film is performed immediately or a portion of the adhesive film is left unexposed (see Figs. 1 and 30 2) for later reference measurement.

På en glat overflade foretages eksponeringen ved at presse klæbefolien mod overfladen, med klæbesiden nedad; på en lådden overflade ved at anbringe klæbefolien i en holder, vist i fig. 4, der indsættes i et støv-35 sugerrør, og efterfølgende støvsugning af den lådne overflade i en forudbestemt tid. Denne holder kan, forOn a smooth surface, the exposure is made by pressing the adhesive film against the surface, with the adhesive side down; on a boxed surface by affixing the adhesive film to a holder, shown in FIG. 4, which is inserted into a dust suction tube, and subsequently vacuumed the laminated surface for a predetermined time. This holder can, for

DK 163538 BDK 163538 B

3 at få en jævn fordeling af støvpartiklerne over klæbefolien, have en turbulensdannende, konisk forsnævring som vist i fig. 4.3 to obtain an even distribution of the dust particles over the adhesive film, having a turbulence-forming conical narrowing as shown in FIG. 4th

Efter eksponering anbringes klæbefolien i måle-5 positionen i måleapparatet i fig. 3, hvor et laserstrålebundt fra en laserdiode LD ved hjælp af linser L-l og L2 bringes til at ramme klæbefolien i et parallelt strålebundt ved målepositionen S. Herved vil en del af det indfaldende laserlys spredes og en del vil absorbe-10 res af støvpartiklerne på klæbefolien, medens resten ved hjælp af en linse L3 med relativt stor brændvidde (f) fokuseres, fortrinsvis via en pinholeblænde Ps, på en detektor Ds, til måling af den transmitterede intensitet, hvis udgangssignal føres til et måleinstru-15 ment M til fremvisning af et måletal.After exposure, the adhesive film is placed in the measuring position in the measuring apparatus of FIG. 3, where a laser beam bundle from a laser diode LD by means of lenses L1 and L2 is caused to strike the adhesive film in a parallel beam bundle at the measurement position S. while the remainder is focused, by means of a lens L3 of relatively large focal length (f), preferably via a pinhole aperture Ps, on a detector Ds, to measure the transmitted intensity whose output signal is fed to a measuring instrument M to display a measurement figures.

Når den støveksponerede klæbefolieflade med et areal A(o) rammes af lys med en intensitet I(o), vil en del af lyset fjernes ved absorption i støvpartiklerne og en anden del fjernes ved spredning. Den mængde lys 20 I(fjernet), der fjernes af støvet er givet ved det effektive areal af støvet A(eff), dvs.When the dust-exposed adhesive film surface having an area A (o) is hit by light of an intensity I (o), part of the light will be removed by absorption into the dust particles and another part removed by scattering. The amount of light 20 L (removed) removed by the dust is given by the effective area of the dust A (eff), ie.

I(fjernet) _ A(eff) _ E * AI (removed) _ A (eff) _ E * A

I(o) A(o) A(o)I (o) A (o) A (o)

Hvor E er ekstinktionskoefficienten og A er 25 arealet af støvets projektion vinkelret på lysstrålen.Where E is the extinction coefficient and A is the area of the projection of the dust perpendicular to the light beam.

E afhænger af forholdet mellem partikelstørrelse og bølgelængden for lyset, og er tæt på 2 når dette forhold er stort (Broomhead et al. 1960). I praksis er E en middelværdi, bestemt af de optiske egenskaber og den 30 aktuelle størrelse for partiklerne.E depends on the ratio of particle size to the wavelength of light, and is close to 2 when this ratio is large (Broomhead et al. 1960). In practice, E is a mean, determined by the optical properties and the actual size of the particles.

Idet der måles transmitterede lysintensiteter med og uden støv på klæbefolien (I(støv), I(ref)) fås: I(fjernet) _ I(støv) _ måletal(støv) I(o) I(ref) måletal(ref), 35 hvor I (støv) er den af måleinstrumentet M målte signalstrøm fra detektoren i forbindelse med en støvekspo-Measuring transmitted light intensities with and without dust on the adhesive film (I (dust), I (ref)) is obtained: I (removed) _ I (dust) _ target number (dust) I (o) I (ref) target number (ref) , Where I (dust) is the signal current measured by the measuring instrument M from the detector in connection with a dust expo.

Claims (13)

1. Fremgangsmåde til rengøringskontrol ved må-30 ling af tilsmudsningsgraden af en overflade ved hjælp af en støvoptagende klæbefolie, ved hvilken der foretages en optisk måling af et støveksponeret område på klæbefolien og en sammenligning af den herved opnåede måleværdi med en referenceværdi, kendetegnet 35 ved, at det støveksponerede område af klæbefolien anbringes i det væsentlige vinkelret på strålingsaksen i DK 163538 B 5 et fra en laserstrålingskilde udsendt laserstrålebundt, som efter passagen gennem klæbefolien fokuseres på en intensitetsmålende fotodetektor, hvis udgangssignal føres til et måleinstrument, hvis visning sammenlignes 5 med referenceværdien.A method of cleaning control by measuring the degree of soiling of a surface by means of a dust-absorbing adhesive film, by which an optical measurement of a dust-exposed area of the adhesive film is made and a comparison of the measured value obtained with a reference value, characterized by that the dust-exposed area of the adhesive film is positioned substantially perpendicular to the radiation axis of a laser beam beam emitted from a laser radiation source, which, after passing through the adhesive film, is focused on an intensity measuring photodetector whose output signal is fed to a measuring instrument 5, the reference being shown . 2. Fremgangsmåde ifølge krav l, kendetegnet ved, at referenceværdien frembringes ved måling af et ikke støveksponeret område af nævnte klæbefolie.Method according to claim 1, characterized in that the reference value is generated by measuring a non-dust exposed area of said adhesive film. 3. Fremgangsmåde ifølge krav 2, kende tegnet ved, at der til prøvetagningen benyttes et klæbefolieemne, hvoraf kun en del benyttes til støveksponering, hvorefter der i samme måleoperation foretages måling på både den støveksponerede del og den 15 til frembringelse af referenceværdien tjenende ikke støveksponerede del af klæbefolieemnet.3. A method according to claim 2, characterized in that an adhesive foil blank is used for sampling, only a portion of which is used for dust exposure, after which, in the same measurement operation, both the dust-exposed part and the non-dust-exposed portion for the reference value are produced. of the adhesive foil blank. 4. Fremgangsmåde ifølge krav 2, kendetegnet ved, at referenceværdien kalibreres ved inden støvprøvetagningen at foretage måling på den del 20 af klæbefolien, som efterfølgende benyttes til støvprøvetagningen .Method according to claim 2, characterized in that the reference value is calibrated by measuring before the dust sampling the part 20 of the adhesive film which is subsequently used for the dust sampling. 5. Fremgangsmåde ifølge et af de foregående krav til måling af tilsmudsningsgraden af en glat overflade, kendetegnet ved, at en støvprøve tages fra 25 overfladen ved hjælp af et klæbefolieemne.Method according to one of the preceding claims for measuring the degree of soiling of a smooth surface, characterized in that a dust sample is taken from the surface by means of an adhesive foil blank. 6. Fremgangsmåde ifølge ethvert af kravene 1-4 til måling af tilsmudsningsgraden af en lådden overflade, kendetegnet ved, at en støvprøve tages fra overfladen ved støvsugning i en forudbestemt tid 30 gennem et rør, hvori der er anbragt et klæbefolieemne, hvorved en del af det opsugede støv afsættes på klæbefolien.A method according to any one of claims 1-4 for measuring the degree of soiling of a laminated surface, characterized in that a dust sample is taken from the surface by vacuuming for a predetermined time 30 through a tube in which is placed an adhesive foil blank, the absorbed dust is deposited on the adhesive film. 7. Fremgangsmåde ifølge krav 6, kendetegnet ved, at luftstrømmen gennem nævnte rør 35 bibringes turbulens i området for klæbefolieemnet, hvorved der sker en jævn fordeling af støvet over klæbefolien. DK 163538 B 6Method according to claim 6, characterized in that the air flow through said tube 35 is imparted to turbulence in the region of the adhesive film blank, whereby the dust is evenly distributed over the adhesive film. DK 163538 B 6 8. Fremgangsmåde ifølge et af de foregående krav, kendetegnet ved, at laserstrålebundtet fokuseres på fotodetektoren ved hjælp af en linse med forholdsvis stor brændvidde og gennem en pinholeblænde 5 med en sådan apertur, at strålingsdetekteringsvinklen er mindre end 0,12°.Method according to one of the preceding claims, characterized in that the laser beam bundle is focused on the photodetector by means of a lens of relatively focal length and through a pinhole aperture 5 with such aperture that the radiation detection angle is less than 0.12 °. 9. Måleapparat til udøvelse af fremgangsmåden ifølge et af de foregående krav, kendetegnet ved, at det omfatter en laserstrålingskilde med tilhø- 10 rende optiske elementer til frembringelse af et i det væsentlige parallelt bundt af laserstråler, en til anbringelse af en klæbefoliestøvsonde udformet holder og midler til anbringelse af denne i nævnte parallelle strålebundt med klæbefolien i det væsentlige vinkelret 15 på strålingsaksen samt midler til fokusering af det gennem klæbefolieholderen passerede strålebundt på en intensitetsmålende fotodetektor og et måleinstrument til måling af detektorens udgangssignal og sammenligning af dette med en referenceværdi. 20Measuring apparatus for carrying out the method according to any one of the preceding claims, characterized in that it comprises a laser radiation source with associated optical elements for producing a substantially parallel bundle of laser beams, a holder for applying an adhesive film dust probe and means for placing this in said parallel beam of beam with the adhesive film substantially perpendicular to the radiation axis and means for focusing the beam of beam passed through the adhesive film holder on an intensity measuring photodetector and a measuring instrument for measuring the output of the detector and comparing it with a reference value. 20 10. Måleapparat ifølge krav 9, kendeteg ne t ved, at strålingskilden er en laserdiode og fotodetektoren en fotodiode.The measuring apparatus according to claim 9, characterized in that the radiation source is a laser diode and the photodetector is a photodiode. 11. Måleapparat ifølge krav 10, kende tegnet ved, at der foran fotodioden er anbragt en 25 pinholeblænde og bagved klæbefolieholderen en linse med forholdsvis stor brændvidde.Measuring apparatus according to claim 10, characterized in that a pin pin aperture is arranged in front of the photodiode and a relatively large focal length lens behind the adhesive film holder. 12. Måleapparat ifølge krav 11, kende tegnet ved, at pinholeblændens apertur er valgt, så strålingsdetekteringsvinklen er mindre end 0,12°. 3012. Measuring apparatus according to claim 11, characterized in that the aperture of the pinhole aperture is selected so that the radiation detection angle is less than 0.12 °. 30 13. Måleapparat ifølge krav 9, 10, 11, 12 eller 13, kendetegnet ved, at det er bærbart.Measuring apparatus according to claim 9, 10, 11, 12 or 13, characterized in that it is portable.
DK74390A 1990-03-22 1990-03-22 PROCEDURE AND CLEANING CONTROL MEASUREMENT DK163538C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK74390A DK163538C (en) 1990-03-22 1990-03-22 PROCEDURE AND CLEANING CONTROL MEASUREMENT
PCT/DK1991/000086 WO1991014935A1 (en) 1990-03-22 1991-03-20 A method and an apparatus for cleaning control
NO923521A NO923521D0 (en) 1990-03-22 1992-09-10 PROCEDURE AND CLEANING CONTROL APPARATUS
FI924223A FI924223A (en) 1990-03-22 1992-09-21 FOERFARANDE OCH APPARAT FOER RENGOERINGSKONTROLL

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK74390 1990-03-22
DK74390A DK163538C (en) 1990-03-22 1990-03-22 PROCEDURE AND CLEANING CONTROL MEASUREMENT

Publications (4)

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DK74390D0 DK74390D0 (en) 1990-03-22
DK74390A DK74390A (en) 1991-09-23
DK163538B true DK163538B (en) 1992-03-09
DK163538C DK163538C (en) 1992-08-03

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DK (1) DK163538C (en)
FI (1) FI924223A (en)
WO (1) WO1991014935A1 (en)

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WO1996009527A1 (en) * 1994-09-23 1996-03-28 Vinzents Peter S A dust sampling equipment

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US2896574A (en) * 1956-05-15 1959-07-28 Larsen Johannes Peter Milking claw for a milking machine
NO307675B1 (en) * 1997-04-18 2000-05-08 Lasse Leirfall Use of a measuring device to indicate a contaminated, soiled or flammable state
SE521948C2 (en) * 1998-12-17 2003-12-23 Act Ab Measuring instruments and method for measuring the degree of dust and dirt coating on a surface
EP2410317A1 (en) * 2010-07-13 2012-01-25 Krämer AG Bassersdorf Method for assessing particles attached to a body
DE102010040069A1 (en) * 2010-08-31 2012-03-01 GLOBALFOUNDRIES Dresden Module One Ltd. Liability Company & Co. KG Method and system for extracting samples after structuring of microstructure devices

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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
JPS58162038A (en) * 1982-03-23 1983-09-26 Canon Inc Pattern defect detection apparatus
EP0231419A1 (en) * 1986-02-05 1987-08-12 Interlava AG Indicating and function controlling optical unit for a vacuum cleaner
WO1987007024A1 (en) * 1986-05-05 1987-11-19 Hughes Aircraft Company Method and apparatus for identifying particulate matter
DE3626724C2 (en) * 1986-08-07 1994-06-16 Siemens Ag Arrangement for surface inspection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009527A1 (en) * 1994-09-23 1996-03-28 Vinzents Peter S A dust sampling equipment

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WO1991014935A1 (en) 1991-10-03
DK74390D0 (en) 1990-03-22
DK74390A (en) 1991-09-23
FI924223A0 (en) 1992-09-21
FI924223A (en) 1992-09-21
DK163538C (en) 1992-08-03

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