Apparatus for controlling washer

• US 5,419,163 A
• Filed: 10/07/1993
• Issued: 05/30/1995
• Est. Priority Date: 06/19/1993
• Status: Expired due to Fees

• Current Assignee: Goldstar Jewellery LLC
• Original Assignee: Goldstar Jewellery LLC
• Inventors: Lee, Byeong H., Kim, Hyung S., Roh, Young H., Kim, Jung H., Chung, Hae Y.
• Primary Examiner(s): Coe, Philip R.
• Application Number:
  US08/133,525
• Time in Patent Office: 600 Days
• Field of Search: 68/12.01, 68/12.02, 68/12.04, 68/12.05
• US Class Current: 68/12.02
• CPC Class Codes: D06F 2103/04 Quantity, e.g. weight or variation of weight
• CPC Class Codes: D06F 2103/06 Type or material
• CPC Class Codes: D06F 2103/18 Washing liquid level
• CPC Class Codes: D06F 2103/20 Washing liquid condition, e.g. turbidity
• CPC Class Codes: D06F 2103/22 Content of detergent or additives
• CPC Class Codes: D06F 2105/00 Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
• CPC Class Codes: D06F 2105/46 Drum speed; Actuation of motors, e.g. starting or interrupting
• CPC Class Codes: D06F 33/32 Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
• CPC Class Codes: D06F 34/08 Control circuits or arrangements thereof
• CPC Class Codes: D06F 34/28 Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress

Abstract

A method of and an apparatus for controlling a washer capable of reducing errors of information required to control the washer to precisely control the washer and preventing a malfunction of the washer to improve a reliance of the washer, by analyzing various and complex data, deriving a correlation coefficient of the data according to the result of the analysis, and determining information required to control the washer, based on the correlation coefficient. The control apparatus includes a sensing unit having sensors for outputting data about various operation conditions of the washer such as a water level, a clothes quality and the kind of a detergent, a clothes amount, and a polluted degree of a washing water. A correlation coefficient operating unit is connected to the sensing unit. The correlation coefficient operating unit serves to analyze the data outputted from the sensors so as to operate correlation coefficients of the data. To the correlation coefficient operating unit, a microprocessor is connected which serves to compare each of the correlation coefficients obtained by the correlation coefficient operating unit with corresponding reference data experimentally obtained and determine information required to control the washer, based on the result of the comparison.

Claims

1. An apparatus for controlling a washer comprising:

sensing means for sensing a plurality of operation conditions of said washer;

correlation coefficient operating means for analyzing data outputted from said sensing means and deriving correlation coefficients of said data; and

a microprocessor for comparing each of said correlation coefficients supplied from said correlation coefficient operating means with corresponding reference data experimentally obtained and determining various information required to control washing time and operation of other operating conditions of the washer, based on the result of said comparison.

2. Apparatus in accordance with claim 1, wherein the correlation coefficient operating means includes:

a switching circuit for switching the data to be analyzed;

a data selecting circuit for receiving data from the switching circuit, for deriving vectors of such data and for selecting desired vectors from the derived vectors;

a distance calculating circuit for calculating a distance Rij based on the selected vectors;

a correlation sum calculating circuit for receiving the distance Rij, comparing the distance Rij with a distance index di and for outputting a correlation sum C(r) corresponding to the distance index di which meets a given distance condition;

inflection point discriminating circuit for discriminating appreciable inflection points of the correlation sum C(r); and

a slope calculating circuit for calculating the slope of a line connecting the inflection points outputted from the inflection point discriminating circuit and outputting a correlation coefficient.