EP0589244B1 - Method for monitoring and controlling the programme progress of a household apparatus - Google Patents
Method for monitoring and controlling the programme progress of a household apparatus Download PDFInfo
- Publication number
- EP0589244B1 EP0589244B1 EP93113863A EP93113863A EP0589244B1 EP 0589244 B1 EP0589244 B1 EP 0589244B1 EP 93113863 A EP93113863 A EP 93113863A EP 93113863 A EP93113863 A EP 93113863A EP 0589244 B1 EP0589244 B1 EP 0589244B1
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- EP
- European Patent Office
- Prior art keywords
- controlling
- monitoring
- programme
- during
- section
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
Definitions
- the invention relates to a method for monitoring and controlling the program flow of a household appliance, e.g. a washing machine, the measurement data ascertained by sensors being evaluated by electronics for influencing the program sequence and in each case only recorded during one or more time-limited sections within a program process.
- a household appliance e.g. a washing machine
- Such a method is specified in FR-A 2 412 638.
- conductivity measured values are recorded and evaluated, for example, in time intervals in order not to unnecessarily extend the duration of the washing process of a washing machine or corresponding machine.
- Another method is e.g. made known from DE-OS 39 04 222.
- This is a method for controlling washing programs running in a washing machine with control electronics, the specific electrical conductivity of the water entering the washing machine and the specific electrical conductivity of the water running out of the washing machine being measured by means of temperature-compensated flow measuring cells arranged in the flow path are, the differential conductivity measured value is calculated from the determined measured conductivity values, including the temperature compensation values for the incoming and outgoing water, and this differential conductivity measured value is supplied to the control electronics as the electrical signal influencing the washing program sequence.
- EP-PS 0 030 602 has disclosed a method for washing laundry washed in a program-controlled washing machine in several rinses in succession depending on output signals from a measuring device which determines the rinsing water pollution and which causes the program control device to terminate the program when determining a permissible rinsing water pollution . It is provided that the measuring device is activated for a limited period of time at the end of each rinse cycle, which is characterized by moving the drum and then pumping off the washing liquor, and that to end the program, the program control device for overriding the program steps until pumping out before last rinse is set.
- the known designs are based on the fact that changes in certain parameters are measured there by means of a target-actual comparison and that the washing program is influenced accordingly on the basis of these changes.
- the cleaning and / or rinsing processes can be qualified and thus also optimized in their sequence by changing the physical parameters describing them over time.
- the realization of such optimizations by measuring pH, conductance, turbidity or the like is prevented to a considerable extent by the fact that the measured values can easily be influenced and falsified by changing measuring conditions, without this being preventable in many cases.
- Such changing measuring conditions are e.g. Temperature fluctuations, different cleaning agent properties etc.
- the measured values can be falsified in that the sensor used changes due to contamination, aging or the like.
- the invention has for its object to simplify and improve a method of the type mentioned.
- This object is achieved according to the invention in that only the rate of change of the data supplied by the sensors is detected and evaluated during a period of time mentioned above.
- Cleaning and / or rinsing processes in a given and thus determined household appliance correspond to a pattern given by the device properties. It is therefore not necessary to know or measure the entire process or, for example, its end point or the distance of the end point from the start point. Rather, it is sufficient to assess the overall process, to define one or more sections. It is also absolutely sufficient that Measuring rate of change of the measurement data of a sensor (sensor), for example its voltage and / or current change behavior, in order to define the process state. This means that during a partial section of a certain process, only the rate of change of an existing measured value, for example the voltage or the current, is measured.
- the measurement data are acquired during two sections of a process, of which one section is placed at the beginning and the other section approximately in the middle of the process being carried out. It has been found that in many cases two such measurements are sufficient to measure the optimally adapt the running process to the existing conditions.
- the measured values are plotted in accordance with a pH value, a conductivity in mS, a turbidity factor or value (TF) or a temperature ( ⁇ ) as a function of time.
- the diagram shows e.g. the typical course of a rinsing process. This can e.g. can be shortened or lengthened depending on the measured rate of change of the associated sensor output. The diagram shows that only the individual rinsing process is controlled and thus also optimized and thus adapted to the real conditions.
- the rinsing time is a further parameter for determining subsequent rinsing processes, since the rinsing time is a measure of the degree of contamination of the items to be rinsed. Takes e.g. the first rinse is long, there is a high degree of contamination and the subsequent rinses can be adjusted accordingly. This adjustment can e.g. by a larger amount of water per wash cycle or by one or more additional wash cycles. Accordingly, a reversal is also possible with a low level of contamination, which then saves time and water.
Description
Die Erfindung bezieht sich auf ein Verfahren zur Überwachung und Steuerung des Programmablaufes eines Haushaltsgerätes, z.B. einer Waschmaschine, wobei die von Meßwertgebern ermittelten Meßdaten von einer Elektronik zwecks Beeinflussung des Programmablaufes ausgewertet und jeweils nur während eines oder mehrerer zeitlich begrenzter Abschnitte innerhalb eines Programmprozesses erfaßt werden.The invention relates to a method for monitoring and controlling the program flow of a household appliance, e.g. a washing machine, the measurement data ascertained by sensors being evaluated by electronics for influencing the program sequence and in each case only recorded during one or more time-limited sections within a program process.
Ein derartiges Verfahren ist in der FR-A 2 412 638 angegeben. Bei diesem bekannten Verfahren werden beispielsweise in Zeitintervallen Leitfähigkeitsmeßwerte erfaßt und ausgewertet, um die Dauer des Spülvorganges einer Waschmaschine oder entsprechender Maschine nicht unnötig zu verlängern.Such a method is specified in FR-A 2 412 638. In this known method, conductivity measured values are recorded and evaluated, for example, in time intervals in order not to unnecessarily extend the duration of the washing process of a washing machine or corresponding machine.
Ein weiteres Verfahren ist z.B. aus der DE-OS 39 04 222 bekannt geworden. Dabei handelt es sich um ein Verfahren zur Steuerung von in einer Waschmaschine mit Steuerelektronik ablaufenden Waschprogrammen, wobei die spezifische elektrische Leitfähigkeit des in die Waschmaschine einlaufenden Wassers und die spezifische elektrische Leitfähigkeit des aus der Waschmaschine ablaufenden Wassers mittels jeweils im Fließweg angeordneter, temperaturkompensiert arbeitender Durchflußmeßzellen gemessen werden, wobei aus den ermittelten Leitfähigkeitsmeßwerten unter Einrechnung der Temperaturkompensationswerte für das einlaufende und das ablaufende Wasser der Differenzleitfähigkeitsmeßwert errechnet wird und wobei dieser Differenzleitfähigkeitsmeßwert der Steuerelektronik als den Waschprogrammablauf beeinflussendes elektrisches Signal zugeführt wird.Another method is e.g. made known from DE-OS 39 04 222. This is a method for controlling washing programs running in a washing machine with control electronics, the specific electrical conductivity of the water entering the washing machine and the specific electrical conductivity of the water running out of the washing machine being measured by means of temperature-compensated flow measuring cells arranged in the flow path are, the differential conductivity measured value is calculated from the determined measured conductivity values, including the temperature compensation values for the incoming and outgoing water, and this differential conductivity measured value is supplied to the control electronics as the electrical signal influencing the washing program sequence.
Durch die EP-PS 0 030 602 ist ein Verfahren zum Spülen von in einer programmgesteuerten Waschmaschine gewaschener Wäsche in mehreren Spülgängen nacheinander in Abhängigkeit von Ausgangssignalen einer die Spülwasserverschmutzung ermittelnden Meßeinrichtung bekannt geworden, die beim Ermitteln einer bestimmungsgemäß zulässigen Spülwasserverschmutzung die Programmsteuereinrichtung zum Beenden des Programmes veranlaßt. Dabei ist vorgesehen, daß die Meßeinrichtung am Ende eines jeden Spülganges für einen begrenzten Zeitabschnitt wirksam geschaltet wird, der durch Bewegen der Trommel und anschließendes Abpumpen der Spüllauge gekennzeichnet ist, und daß zum Beenden des Programms die Programmsteuereinrichtung zum Überfahren der Programmschritte bis zum Abpumpen vor dem letzten Spülgang eingestellt wird.EP-PS 0 030 602 has disclosed a method for washing laundry washed in a program-controlled washing machine in several rinses in succession depending on output signals from a measuring device which determines the rinsing water pollution and which causes the program control device to terminate the program when determining a permissible rinsing water pollution . It is provided that the measuring device is activated for a limited period of time at the end of each rinse cycle, which is characterized by moving the drum and then pumping off the washing liquor, and that to end the program, the program control device for overriding the program steps until pumping out before last rinse is set.
Die bekannten Bauarten beruhen im Prinzip darauf, daß dort durch einen Soll-lst-Vergleich Veränderungen bestimmter Parameter gemessen werden und daß aufgrund dieser Veränderungen das Waschprogramm entsprechend beeinflußt wird.In principle, the known designs are based on the fact that changes in certain parameters are measured there by means of a target-actual comparison and that the washing program is influenced accordingly on the basis of these changes.
Dabei sind die Reinigungs- und/oder Spülprozesse in ihrem Ablauf durch die zeitliche Veränderung der sie beschreibenden physikalischen Parameter qualifizierbar und damit auch optimierbar. Die Realisierung derartiger Optimierungen durch Messung von pH-Wert, Leitwert, Trübung oder dgl. wird jedoch in einem erheblichen Maß dadurch gehindert, daß die Meßwerte leicht durch sich ändernde Meßbedingungen beeinflußt und verfälscht werden können, ohne daß dies in vielen Fällen verhindert werden kann. Derartige, sich ändernde Meßbedingungen sind z.B. Temperaturschwankungen, unterschiedliche Reinigungsmitteleigenschaften usw. Ferner können die Meßwerte dadurch verfälscht werden, daß sich der verwendete Meßfühler durch Verschmutzung, Alterung oder dgl. ändert.The cleaning and / or rinsing processes can be qualified and thus also optimized in their sequence by changing the physical parameters describing them over time. However, the realization of such optimizations by measuring pH, conductance, turbidity or the like is prevented to a considerable extent by the fact that the measured values can easily be influenced and falsified by changing measuring conditions, without this being preventable in many cases. Such changing measuring conditions are e.g. Temperature fluctuations, different cleaning agent properties etc. Furthermore, the measured values can be falsified in that the sensor used changes due to contamination, aging or the like.
Die genannten Nachteile und Probleme sind zwar prinzipiell z.B. durch Kompensationsschaltungen oder Eichpunktmessungen zu beherrschen. Dies führt aber zu sehr komplexen und damit teuren Ausführungen.The disadvantages and problems mentioned are in principle e.g. to be mastered by compensation circuits or calibration point measurements. However, this leads to very complex and therefore expensive designs.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art zu vereinfachen und zu verbessern.The invention has for its object to simplify and improve a method of the type mentioned.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß während eines einleitend genannten Zeitabschnittes jeweils nur die Änderungsgeschwindigkeit der von den Meßwertgebern gelieferten Daten erfaßt und ausgewertet wird. Reinigungs- und/oder Spülprozesse in einem vorgegebenen und damit bestimmten Haushaltsgerät entsprechen einem durch die Geräteeigenschaften vorgegebenen Muster. Es ist somit gar nicht notwendig, den gesamten Prozeß oder z.B. dessen Endpunkt oder den Abstand des Endpunktes vom Startpunkt zu kennen bzw. zu messen. Es genügt vielmehr, um den Gesamtprozeß zu beurteilen, einen oder mehrere Teilausschnitte zu definieren. Es ist ferner absolut ausreichend, die Veränderungsgeschwindigkeit der Meßdaten eines Meßwertgebers (Sensors), z.B. dessen Spannungs- und/oder Stromänderungsverhalten, zu messen, um den Prozeßzustand zu definieren. Dies bedeutet also, daß während eines Teilausschnittes eines bestimmten Prozesses nur die Änderungsgeschwindigkeit eines vorliegenden Meßwertes, z.B. der Spannung oder des Stromes, gemessen wird.This object is achieved according to the invention in that only the rate of change of the data supplied by the sensors is detected and evaluated during a period of time mentioned above. Cleaning and / or rinsing processes in a given and thus determined household appliance correspond to a pattern given by the device properties. It is therefore not necessary to know or measure the entire process or, for example, its end point or the distance of the end point from the start point. Rather, it is sufficient to assess the overall process, to define one or more sections. It is also absolutely sufficient that Measuring rate of change of the measurement data of a sensor (sensor), for example its voltage and / or current change behavior, in order to define the process state. This means that during a partial section of a certain process, only the rate of change of an existing measured value, for example the voltage or the current, is measured.
Um die Zuverlässigkeit des Meßvorganges zu erhöhen, ist in Ausgestaltung der Erfindung vorgesehen, daß die Meßdaten während zweier Abschnitte eines Prozesses erfaßt werden, von denen der eine Abschnitt an den Anfang und der andere Abschnitt etwa in die Mitte des ablaufenden Prozesses gelegt wird. Es hat sich herausgestellt, daß in vielen Fällen zwei derartige Messungen ausreichen, um den ablaufenden Prozeß an die vorliegenden Gegebenenheiten optimal anzupassen.In order to increase the reliability of the measurement process, it is provided in an embodiment of the invention that the measurement data are acquired during two sections of a process, of which one section is placed at the beginning and the other section approximately in the middle of the process being carried out. It has been found that in many cases two such measurements are sufficient to measure the optimally adapt the running process to the existing conditions.
In der Zeichnung ist das Verfahren an einem Schaubild schematisch erläutert.In the drawing, the process is schematically explained using a diagram.
Auf der Ordinate können z.B. die Meßwerte entsprechend einem pH-Wert, einem Leitwert in mS, einem Trübungsfaktor bzw. -wert (TF) oder einer Temperatur (θ) in Abhängigkeit von der Zeit aufgetragen werden. Das Schaubild zeigt z.B. den typischen Verlauf eines Spülprozesses. Dieser kann z.B. verkürzt oder verlängert werden, je nach der gemessenen Veränderungsgeschwindigkeit des zugehörigen Sensorausganges. Das Schaubild zeigt, daß nur der einzelne Spülprozess kontrolliert und damit auch optimiert und somit den realen Gegebenheiten angepaßt wird.On the ordinate e.g. the measured values are plotted in accordance with a pH value, a conductivity in mS, a turbidity factor or value (TF) or a temperature (θ) as a function of time. The diagram shows e.g. the typical course of a rinsing process. This can e.g. can be shortened or lengthened depending on the measured rate of change of the associated sensor output. The diagram shows that only the individual rinsing process is controlled and thus also optimized and thus adapted to the real conditions.
Bei dem erläuterten Ablauf eines derartigen Spülprozesses ist erkennbar, daß die Spüldauer ein weiterer Parameter zur Bestimmung nachfolgender Spülprozesse ist, da die Spüldauer ein Maßstab für den Verunreinigungsgrad des zu spülenden Waschgutes ist. Dauert z.B. der erste Spülgang lange, so ist ein hoher Verunreinigungsgrad vorhanden, und die nachfolgenden Spülgänge können entsprechend angepaßt werden. Diese Anpassung kann z.B. durch eine größere Wassermenge pro Spülgang oder durch einen oder mehrere zusätzliche Spülgänge erfolgen. Entsprechend ist auch eine Umkehrung bei einer geringen Verunreinigung möglich, dies führt dann zu einer Zeit- und Wassereinsparung.When the rinsing process of this type is explained, it can be seen that the rinsing time is a further parameter for determining subsequent rinsing processes, since the rinsing time is a measure of the degree of contamination of the items to be rinsed. Takes e.g. the first rinse is long, there is a high degree of contamination and the subsequent rinses can be adjusted accordingly. This adjustment can e.g. by a larger amount of water per wash cycle or by one or more additional wash cycles. Accordingly, a reversal is also possible with a low level of contamination, which then saves time and water.
Claims (2)
- A method for monitoring and controlling the programme sequence of a househould appliance, e.g. a washing machine, in which the measurement data determined from measurement value pickups are evaluated by an electronic arrangement for the purpose of influencing the programme sequence and in each case are only picked up during one or more temporarily limited sections within a programme process,
characterized in that
during such a section of time in each case only the rate of change of the data supplied by the measurement value pickups is detected and evaluated. - A method according to claim 1,
characterized in that
the measurement data are picked up during two sections of a process, the one section of which is placed at the start and the other section of which is placed approximately in the middle of the running process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4232135 | 1992-09-25 | ||
| DE4232135A DE4232135C2 (en) | 1992-09-25 | 1992-09-25 | Process for monitoring and controlling a program process in the program sequence of a household appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0589244A1 EP0589244A1 (en) | 1994-03-30 |
| EP0589244B1 true EP0589244B1 (en) | 1997-03-05 |
Family
ID=6468819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93113863A Revoked EP0589244B1 (en) | 1992-09-25 | 1993-08-31 | Method for monitoring and controlling the programme progress of a household apparatus |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0589244B1 (en) |
| DE (3) | DE4244783C5 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7114209B2 (en) | 2001-12-12 | 2006-10-03 | The Procter & Gamble Company | Method for cleaning a soiled article |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006060256A1 (en) * | 2006-12-14 | 2008-06-26 | E.G.O. Elektro-Gerätebau GmbH | Method for controlling a washing machine |
| EP2508113A1 (en) * | 2009-04-24 | 2012-10-10 | Electrolux Home Products Corporation N.V. | Method for operating a dishwasher |
| DE102010062138A1 (en) * | 2010-11-29 | 2012-05-31 | Henkel Ag & Co. Kgaa | Method for controlling a dosing device for flowable detergents or cleaners |
| DE102012208618A1 (en) | 2012-05-23 | 2013-11-28 | BSH Bosch und Siemens Hausgeräte GmbH | Method for controlling washing machine, involves continuous determination of temporary change in conductivity of aqueous liquid in treatment area, and comparing temporary change in conductivity with threshold value for temporary change |
| DE102015204537A1 (en) | 2015-03-13 | 2016-09-15 | BSH Hausgeräte GmbH | Method for operating a washing machine with improved rinsing phase and this suitable washing machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI773869A (en) * | 1977-12-20 | 1979-06-21 | Asko Upo Oy | FOERFARANDE OCH ANORDNING FOER STYRNING AV SKOELJNINGEN I EN TVAETTMASKIN |
| DE2950929B1 (en) * | 1979-12-18 | 1981-04-16 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Method for rinsing laundry washed in a program-controlled washing machine |
| DE3030864C2 (en) * | 1980-08-14 | 1985-04-25 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Method for automatically controlling the drying process in a laundry drying system and device for carrying out the method |
| DE3206563A1 (en) * | 1982-02-24 | 1983-09-01 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Control device for a washing machine |
| JPS58221996A (en) * | 1982-06-17 | 1983-12-23 | 松下電器産業株式会社 | Control apparatus of dryer |
| US4782544A (en) * | 1987-04-16 | 1988-11-08 | Whirlpool Corporation | Water extraction method and control for automatic washer |
| DE3904222A1 (en) * | 1989-02-13 | 1990-08-16 | Lang Apparatebau Gmbh | METHOD AND DEVICE FOR PROGRAM CONTROL OF WASHING MACHINES |
-
1992
- 1992-09-25 DE DE4244783A patent/DE4244783C5/en not_active Expired - Lifetime
- 1992-09-25 DE DE4232135A patent/DE4232135C2/en not_active Expired - Lifetime
-
1993
- 1993-08-31 DE DE59305584T patent/DE59305584D1/en not_active Expired - Lifetime
- 1993-08-31 EP EP93113863A patent/EP0589244B1/en not_active Revoked
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7114209B2 (en) | 2001-12-12 | 2006-10-03 | The Procter & Gamble Company | Method for cleaning a soiled article |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0589244A1 (en) | 1994-03-30 |
| DE4232135A1 (en) | 1994-03-31 |
| DE4232135C2 (en) | 1995-10-26 |
| DE4244783C2 (en) | 1997-01-16 |
| DE59305584D1 (en) | 1997-04-10 |
| DE4244783C5 (en) | 2007-02-15 |
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