Method and system for detecting soot and ash concentrations in a filter
US7157919B1 · kind B1 · utility
38Cited by
11References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2005 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Jul 26, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for detecting soot and or ash loading within a filter is provided. The method comprises the steps of transmitting a source RF signal through a filter, measuring a reflected RF signal, measuring a transmitted RF signal, calculating reflected power by comparing the source RF signal with the reflected RF signal, calculating attenuated power by comparing the source RF signal with the transmitted RF signal, and determining soot loading based on reflected power and transmitted power. The system and method may also determine ash loading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.