Electrochemical impedance measurement system and method for use thereof
US7504835B2 · kind B2 · utility
21Cited by
28References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2007 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | May 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method and apparatus for an electrochemical impedance measurement, and in particular circuitry and components employed for such measurements. The system employs an injected broadband AC signal to produce an associated response signal. The subsequent analysis of injected and response signals, considering both magnitude and phase, gives broadband impedance and therefore fluid characteristic information. An embodiment described is relative to a smart oil sensor system suitable for sensing, analyzing and reporting the condition of oil or other liquids used in equipment and machinery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.