Patent · US Expired

Device for the measurement of moisture of harvested crop

US6437582B1 · kind B1 · utility

15Cited by

9References

21Claims

0Family size

Assignee

Deere & Company · US

Inventors

Hans-Jürgen Rode · Harrislee, DE
Arnold Rutz · Ludwigshafen, DE

Key dates

Filing date	Jul 18, 2000
Grant date	Aug 20, 2002
Priority date	—
Expiry date	Jul 18, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/025
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for the measurement of the moisture of harvested crop including a measurement capacitor (52) with two spaced electrodes (78, 80, 82), between which harvested crop can be introduced. The capacitor (52) is connected to an inductance (104) of a resonance circuit (106). For improved precision, it is proposed that the resonance circuit (106) be supplied with a measurement signal in the form of an alternating voltage with variable frequency and that a parameter of the resonance circuit (106), preferably resonant frequency dependent upon the capacitance of the capacitor (52), be detected at various frequencies and used for the determination of the moisture.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.