Method of determining a moisture content of textile goods in a l

Details Method of determining a moisture content of textile goods in a l Method of determining a moisture content of textile goods in a l

1999-03-15

2000-05-30

Oen, William

Measuring and testing

Moisture content or absorption characteristic of material

34524, 34528, 34532, G01N 502, F26B 1310

Patent

active

060678453

ABSTRACT:
The electrical conductivity of laundry in a laundry drum is measured and the moisture content is determined from the measured quantity. A polarization voltage, which corrupts the measurement result, is formed at the electrodes. In order to compensate for this disturbing influence, as well as for other material and aging effects, the conductivity measurement is briefly interrupted and the polarization voltage which is present across the electrodes and has formed during the conductivity measurement is measured. The measured error voltage is used to compensate the laundry voltage measured during the previous conductivity measurement. This improves the determination of the conductivity, and thus of the moisture content, considerably. The method is particularly suitable for a microcontroller.

REFERENCES:
patent: 3758959 (1973-09-01), Karklys
patent: 3818603 (1974-06-01), Marcade
patent: 5737852 (1998-04-01), Shukla et al.

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