Sensor for measuring moisture and salinity
US7884620B2 · kind B2 · utility
4Cited by
11References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 2009 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | May 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/246
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor for measuring the moisture and salinity of a material is disclosed herein. The sensor preferably includes a soil moisture circuit, a soil salinity circuit and a probe structure. The soil moisture circuit includes a high frequency oscillator, a voltage meter and a reference capacitor. The soil salinity circuit includes a low frequency oscillator, a voltage meter and a reference resistor. A third voltage meter allows for voltage outputs to be measured to calculate soil moisture and soil salinity values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.