Particulate matter detection device
US8366813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2010 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Jun 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/0656
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A particulate matter detection device (100) includes a first electrode (10) that includes a conductive section (12) and a dielectric (14) that covers the conductive section (12), and a second electrode (20) that is disposed opposite to the first electrode (10) at an interval of 0.3 to 3.0 mm. Charged particulate matter contained in a fluid that passes through the space between the first electrode (10) and the second electrode (20), or particulate matter that is contained in a fluid and charged by a discharge that occurs due to application of a voltage between the electrodes (10) and (20) is electrically adsorbed on at least one of the electrodes (10) and (20), and the particulate matter adsorbed on the electrodes (10) and (20) is detected by measuring a change in electrical properties of the first electrode (10), or a change in electrical properties of the electrodes (10) and (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.