Method for temperature compensation of measured values of a turbidity sensor in an automatic washing machine or diswasher
US5889192A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1997 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Jun 17, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2103/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A turbidity sensor is built in at a location being reachable by washing fluid in an automatic washing machine having a microprocessor for process control, a light transmitter and a light receiver for transmitting light through the washing fluid in a measurement path. A method for temperature compensation of measured values of the turbidity sensor includes calculating a temperature coefficient of the turbidity sensor for each operating point and storing the temperature coefficient in memory as a correction value in software for evaluating measurement results of the turbidity sensor. A respective measurement result is corrected by using the temperature coefficient as a function of a temperature being present and measured at the turbidity sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.