GB2422202A - A device for determining dust accumulation - Google Patents
A device for determining dust accumulation Download PDFInfo
- Publication number
- GB2422202A GB2422202A GB0500330A GB0500330A GB2422202A GB 2422202 A GB2422202 A GB 2422202A GB 0500330 A GB0500330 A GB 0500330A GB 0500330 A GB0500330 A GB 0500330A GB 2422202 A GB2422202 A GB 2422202A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- dust
- data
- data storage
- camera
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 239000000428 dust Substances 0.000 title claims abstract description 14
- 238000009825 accumulation Methods 0.000 title abstract description 3
- 238000013500 data storage Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 6
- 239000011236 particulate material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229920005439 Perspex® Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013481 data capture Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- 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
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
-
- 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
- G01N2015/0096—Investigating consistence of powders, dustability, dustiness
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/9506—Optical discs
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/062—LED's
Landscapes
- Chemical & Material Sciences (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)
- Dispersion Chemistry (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
A device is disclosed to determine dust accumulation in an environment. The device has a glass disc 11 for collecting the dust and a camera (12) recording the amount collected. A digital camera means (12) captures an image of the accumulated dust which image is stored on suitable data storage means. Illumination to facilitate the making of and improve the quality of the image is also included. The illumination can be provided by an array of one or more light emitting diodes 13. Power for the device can be by means of a battery, held in a suitable holder (18), from the mains electricity supply, or a combination thereof. The data can be stored on the device itself, or the data storage unit can be removable to enable central processing to take place. Dust accumulates on a surface 11A of a transparent element 11 typically disc-shaped.
Description
A DEVICE FOR DETERMINING DUST ACCUMULATION
The present invention relates to a device for providing a measurement of the amount of dust or other particulate matter accumulating in an area. The device is particularly suited for use in environments such as museums, art galleries and the like.
* : . Modern museums and art galleries often include a high degree of climate control **.* * *.* within the rooms in order to minimise damage to the exhibits. The parameters controlled are normally temperature and humidity as they can cause severe problems if they are allowed outside certain values, the values depending on the exhibits. a. *
S S...
Occasionally however it is useful to monitor and control the extent to which fine *..
particulate material is present as such particulate material can also have a detrimental effect on exhibits. This effect arises primarily because the visual impression made by the exhibit on the visitor is diminished by a layer of dust, but there is also the risk that the particulate material will cause physical damage. The exhibits will therefore require cleaning on a regular basis. However, even if the cleaning method used is gentle it will inevitably, over time, cause perceptible damage to the exhibits and there is always a risk that an accident during the cleaning will occur, which will cause damage.
It would be useful therefore if a means were available to indicate when the cleaning is actually required. Such a means could also be used to monitor the effectiveness of the climate control. Should the rate at which cleaning is required show an increase, then this can be used as an indicator that the control may not be functioning effectively.
The present invention therefore seeks to address the above problems and provides accordingly; a dust determination device, the device comprising an optically transparent surface formed from material such as glass or perspex, on which particulate material can accumulate; one or more light sources directed to illuminate the surface; digital camera means operable to capture an image of the surface and any accumulated material; * : control means to govern when an image is captured and data storage means on *..* * * * * which the image is stored.
*..: The transparent surface is preferably substantially disc-shaped which provides both for ease of manufacture and for a flat surface on which the material can * 15 accumulate. The or each light source is preferably a light emitting diode (LED), S...
* **** arrayed particularly preferably radially about the radial edge of the surface. *..
Power for the device is conveniently supplied by a battery, although a mains supply, modified with a suitable transformer can also be used. The data storage means can be removable so that data can be collected and processed centrally.
Alternatively, the device itself can include processing means to give a direct local read-out of the conditions. Additionally or alternatively, the data can be transmitted to a remote source for processing.
Brief Description of the Drawings
The invention will be described with reference to the accompanying drawings, which show by way of example only one embodiment of a determination device.
In the drawings; Figure 1 is a top view of a power supply and controller; Figure 2 shows the underside of a lid for a monitor unit; Figure 3 is a top view of a monitor unit; Figure 4 is a side view of a monitor lid; Figures 5A and B are side views of a camera assembly.
Detailed Description of the Invention
In broad terms, the device is located within the room in which dust levels are to be : *** monitored. After a pre-set period of time, during which dust particles are S...
collected in the device, a monitor unit of the device is activated and an image of S...
the accumulated dust is made. In order to facilitate the making of the image, *..: illumination is provided, which serves as a contrast against which a digital image is captured by means of a camera, generally referenced 12. The camera 12 * captures a digital image at a number of pre-set time intervals during the day.
Depending on the size of the data storage unit within the device, the device can function for a number of days before any action needs to he taken by an operator.
In more detail, the device includes a glass or perspex disc Ii, one surface 1 1A of which is exposed to the environment and on which particulate material from that environment can accumulate. Illumination is provided by six bright clear white light emitting diodes 13 set in a radial pattern parallel to the glass disc surface and fitted to a custom built circuit board 14. The lighting array is fixed under a metal lid with a machined circular hole, allowing the glass surface to be exposed for sampling.
In order to capture an image, a digital camera 12 having a generic fixed non-zoom lens and with a 4 mega pixel capability, is used as the image capture device.
The camera is coupled to an astronomical telescope eyepiece lens 15 having a 25mm focal length, orthoscopic. The lens 15 is attached to the camera 1 2 by a custom machined plastic sleeve 16. Tn use, the lens provides the required focusing and magnification to enable a reasonable image to be generated. A S custom machined plastic block 17 in the base of the monitor casing holds the camera into position; the mounting of the camera within the block being of a push-fit type.
In order to supply power to the elements within the device, a power supply unit 20 includes means 21 for connection to the mains power supply 220 Volts. The power from the mains supply goes directly to a programmable controller 22 and also to a power regulation unit 23, via a mains transformer 24. Power for the monitor unit is provided by standard batteries contained in one or more battery holders 18. Typically, each battery holder will contain eight standard AA dry cells. I...
"** 15 In use, the camera will typically sample an area having dimensions 1 8x 14 mm.
: Although capturing four images a day has been found to be sufficient for most purposes, the number of images taken will obviously depend on the use to which the device is put. Normally sufficient storage space will be provided to enable the * . : device to function for over a month before action needs to be taken by an * S..
20 operator.
When capturing an image, the programmable controller 22 communicates with the monitor through the multi-way socket points 19 and activates the light emitting diodes. The camera is powered up so that it is ready to take an image of dust accumulated on the disc. The shutter on the camera is then activated and the data from the camera's pixels is saved to a card. The image can then be processed either within a processing element contained within the device or remotely.
Power to the camera and to the light emitting diode is switched off. Processing of the data can be by, for example, a publicly available programme ImageJ, which is available from http://rsb.info.nih. gov/nihimage/index.html. Once the analysis of the saved data has taken place then the analysis can be processed and graphically displayed using a written Java, VisualBasic.NET or an extended Java Macro for ImageJ.
It is envisaged, that the battery power unit can comprise rechargeable batteries, the monitor unit then including an external charging port. Data transmission and receipt can be via an external USB port access. Where required, an on board chip programmable unit can be included to allow more sample times and easy programming of the device via an external connector port. in order to provide better image capture an offset rotary or sliding cover can be included within the monitor unit to cover the disc and so black out stray background light from the monitor during the data capture by the camera.
Although the power supply and control unit and the monitor unit are shown as being separate, they can be combined into a single unitary article.
:.:::. It will of course be understood that the invention is not limited to the specific e..
S. details described herein, which are given by way of example only, and that * : 15 various modifications and alterations are possible with the scope of the appended claims. *
S S... S...
S S...
Claims (9)
- Claims 1. A dust determination device, the device comprising an opticallytransparent clement formed from material such as glass or perspex, the element having a surface on which particulate material can accumulate; one or more light sources directed to illuminate the surface; digital camera means operable to capture an image of the surface and any accumulated material; control means to govern when an image is captured and data storage means on which the image is stored.: *. 10
- 2. A device according to Claim 1, wherein the element is substantially disc- shaped.
- 3. A device according to Claim 1 or Claim 2, wherein the or each light source is a light emitting diode (LED). S. S
- 4. A device according to any preceding claim, wherein the or each light source is arrayed radially about the radial edge of the surface.
- 5. A device according to any preceding claim, wherein power for the device is supplied by a battery.
- 6. A device according to Claims 1 to 4, wherein the power for the device is a mains supply, modified with a suitable transformer.
- 7. A device according to any preceding claim, wherein the data storage means is removable so that data can be collected and processed centrally.
- 8. A device according to Claims I to 6, wherein the device itself includes processing means to give a direct local read-out of the conditions.
- 9. A device according to any preceding claim, wherein data is transmitted to a remote source for processing.1 0. A device substantially as herein described with reference to and as illustrated by the accompanying drawings. * ** * * * S... S.. * S I... S.. . I...S S... S * *S5*
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0500330A GB2422202A (en) | 2005-01-10 | 2005-01-10 | A device for determining dust accumulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0500330A GB2422202A (en) | 2005-01-10 | 2005-01-10 | A device for determining dust accumulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0500330D0 GB0500330D0 (en) | 2005-02-16 |
| GB2422202A true GB2422202A (en) | 2006-07-19 |
Family
ID=34203774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0500330A Withdrawn GB2422202A (en) | 2005-01-10 | 2005-01-10 | A device for determining dust accumulation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2422202A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1039263C2 (en) * | 2011-12-23 | 2013-06-26 | Zevenaar Elektronica & Sensoren B V | DEVICE AND METHOD FOR COUNTING AND MEASURING PARTICLES. |
| FR3032036A1 (en) * | 2015-01-27 | 2016-07-29 | Cnrs - Centre Nat De La Rech Scient | METHODS AND DEVICES FOR DETECTING SURFACE CONTAMINATION BY FREE-AIR EVOLVING PARTICLES |
| GB2553830A (en) * | 2016-09-16 | 2018-03-21 | Scient Instruments Limited | A dust detector and method |
| CN109374645A (en) * | 2018-12-27 | 2019-02-22 | 山东建筑大学 | Photovoltaic panel dust detection system and method |
| WO2023028194A1 (en) * | 2021-08-25 | 2023-03-02 | Industrial Intelligence, Inc. | System, device and method for effective deployment of a dust accumulation sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10221040A (en) * | 1997-01-31 | 1998-08-21 | Olympus Optical Co Ltd | Macroinspection apparatus and process monitoring method |
| JPH1164237A (en) * | 1997-08-26 | 1999-03-05 | Toshiba Corp | Method and device for inspecting liquid crystal cell |
| JP2000097868A (en) * | 1998-09-28 | 2000-04-07 | Central Glass Co Ltd | Defect detecting device for transparent plate-like body |
| JP2003215726A (en) * | 2002-01-25 | 2003-07-30 | Canon Inc | Image reader and lighting unit |
| GB2391937A (en) * | 2002-08-17 | 2004-02-18 | Paul Anthony Kendall | Mail screening unit for powders |
| US6804386B1 (en) * | 1995-06-07 | 2004-10-12 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical member inspecting apparatus and method of inspection thereof |
-
2005
- 2005-01-10 GB GB0500330A patent/GB2422202A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6804386B1 (en) * | 1995-06-07 | 2004-10-12 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical member inspecting apparatus and method of inspection thereof |
| JPH10221040A (en) * | 1997-01-31 | 1998-08-21 | Olympus Optical Co Ltd | Macroinspection apparatus and process monitoring method |
| JPH1164237A (en) * | 1997-08-26 | 1999-03-05 | Toshiba Corp | Method and device for inspecting liquid crystal cell |
| JP2000097868A (en) * | 1998-09-28 | 2000-04-07 | Central Glass Co Ltd | Defect detecting device for transparent plate-like body |
| JP2003215726A (en) * | 2002-01-25 | 2003-07-30 | Canon Inc | Image reader and lighting unit |
| GB2391937A (en) * | 2002-08-17 | 2004-02-18 | Paul Anthony Kendall | Mail screening unit for powders |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1039263C2 (en) * | 2011-12-23 | 2013-06-26 | Zevenaar Elektronica & Sensoren B V | DEVICE AND METHOD FOR COUNTING AND MEASURING PARTICLES. |
| FR3032036A1 (en) * | 2015-01-27 | 2016-07-29 | Cnrs - Centre Nat De La Rech Scient | METHODS AND DEVICES FOR DETECTING SURFACE CONTAMINATION BY FREE-AIR EVOLVING PARTICLES |
| WO2016120276A1 (en) * | 2015-01-27 | 2016-08-04 | Aix-Marseille Universite (Amu) | Methods and devices for detecting surface contamination by particles in free air |
| GB2553830A (en) * | 2016-09-16 | 2018-03-21 | Scient Instruments Limited | A dust detector and method |
| WO2018051101A1 (en) * | 2016-09-16 | 2018-03-22 | Scientific Instruments Limited | A dust detector and method |
| GB2553830B (en) * | 2016-09-16 | 2020-02-12 | Scient Instruments Limited | A dust detector and method |
| CN109374645A (en) * | 2018-12-27 | 2019-02-22 | 山东建筑大学 | Photovoltaic panel dust detection system and method |
| WO2023028194A1 (en) * | 2021-08-25 | 2023-03-02 | Industrial Intelligence, Inc. | System, device and method for effective deployment of a dust accumulation sensor |
| US11841305B2 (en) | 2021-08-25 | 2023-12-12 | Industrial Intelligence, Inc. | System, device and method for effective deployment of a dust accumulation sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0500330D0 (en) | 2005-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2422202A (en) | A device for determining dust accumulation | |
| JP6691040B2 (en) | Culture observation device | |
| CN102540651B (en) | Image picking system and image pick up equipment | |
| CN101952762B (en) | High numerical aperture telemicroscopy apparatus | |
| US20120133756A1 (en) | Compact, high-resolution fluorescence and brightfield microscope and methods of use | |
| CN104797925B (en) | Container and system for not needing optical lens and optical analysis sample | |
| EP3567096B1 (en) | Cell observation system | |
| JP2016077226A (en) | Culture observation apparatus and culture observation system | |
| JP6514832B2 (en) | Observation device | |
| US20120140056A1 (en) | Sample imaging system and method for transmitting an image of cells or tissues located in a culturing space to data prcessing means | |
| CN208353445U (en) | A kind of monitoring camera with dust reduction capability | |
| US8265352B1 (en) | Photographic fingerprint collection and imaging system | |
| KR200467844Y1 (en) | Camera Module | |
| JP2018515802A (en) | Method and apparatus for microscopy | |
| KR20070033613A (en) | Portable Digital Microscopes for Mobile Phones | |
| JP2021151257A (en) | Cell observation system and cell observation method | |
| JP7424698B1 (en) | Sensor devices and sensing systems | |
| JP2004317377A (en) | Foreign matter detection tool, camera body, and foreign matter detection system for lens replacing type digital camera | |
| CN202183820U (en) | Electronic shooting device | |
| JP7033796B2 (en) | A system for simultaneous videographic or photographic capture of multiple images | |
| CA2639722C (en) | Image sensor inspection and cleaning device | |
| US9778450B2 (en) | Microscope accessory | |
| CN203037567U (en) | Novel gel imaging analyzer | |
| CN101281120A (en) | Rock debris fluorescent / general light digitization imaging acquiring instrument and analyze management system | |
| Churgin et al. | An imaging system for monitoring C. elegans behavior and aging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |