Method for soil content prediction based on a limited number of mid-infrared absorbances
US7671336B2 · kind B2 · utility
2Cited by
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18Claims
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Key dates
| Filing date | Sep 14, 2006 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Jul 10, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A single absorbance value was found in the mid infrared (mid-IR) region that correlated directly to soil nitrate content while not being influenced by other components in the soil, such as carbonate and organic matter. Using one or two absorbance values, at which interference from other ions is a minimum, to predict a component's concentration as opposed to the conventional method of using a continuous spectrum allows for an in-situ real-time soil nitrate content sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.