Washing machine having optical sensor for detecting light permea

Details Washing machine having optical sensor for detecting light permea Washing machine having optical sensor for detecting light permea

1991-09-06

1992-08-25

Coe, Philip R.

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

D06F 3302

Patent

active

051408422

ABSTRACT:
A washing machine apparatus includes an optical sensor for detecting a light permeability of a liquid contained in a washer tank. The time duration of a washing cycle is determined in accordance with two variables. The first variable is a saturating time in which the detected light permeability becomes relatively constant. The second variable is the overall light permeability change during the washing cycle at the saturation time. The saturating time period and the light permeability change are fuzzy processed to obtain a remaining time duration of the washing cycle.

REFERENCES:
patent: 4222250 (1980-09-01), Torita
patent: 4372134 (1983-02-01), Matsuo
patent: 4653294 (1987-03-01), Akinaga
patent: 5048139 (1991-09-01), Matsumi et al.

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