System and method for sensing and analyzing gases
US7763208B2 · kind B2 · utility
8Cited by
13References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Sep 15, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0031
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein is a device and method for converting the resistances of an array of metal oxide sensors into digital signals, wherein the sensors respond to the concentration of gases surrounding the sensor array. The device includes an electronic excitation device that provides an excitation voltage to the sensors; analog-to-digital signal conversion devices that convert the resistances of the sensors to digital signals; and means for calculating gas concentrations from the digital signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.