Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
• • 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 
  • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
  • G01J3/02—Details
  • G01J3/0291—Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
  • G01J3/28—Investigating the spectrum
  • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
• • 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
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/02—Characteristics of laundry or load
  • D06F2103/04—Quantity, e.g. weight or variation of weight
• • 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
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/02—Characteristics of laundry or load
  • D06F2103/06—Type or material
• • 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
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/02—Characteristics of laundry or load
  • D06F2103/08—Humidity
• • 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
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/64—Radiation, e.g. microwaves
• • 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
  • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
  • D06F2105/02—Water supply
• • 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
  • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
  • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
  • D06F2105/48—Drum speed
• • 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
  • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
  • D06F2105/58—Indications or alarms to the control system or to the user
• • 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
  • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
  • D06F34/14—Arrangements for detecting or measuring specific parameters
  • D06F34/18—Condition of the laundry, e.g. nature or weight
• • 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
  • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
  • D06F37/30—Driving arrangements 
  • D06F37/304—Arrangements or adaptations of electric motors
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
  • G01J3/02—Details
  • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
  • G01J2003/102—Plural sources
  • G01J2003/104—Monochromatic plural sources
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
  • G01J3/02—Details
  • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
  • G01J2003/102—Plural sources
  • G01J2003/106—Plural sources the two sources being alternating or selectable, e.g. in two ranges or line:continuum
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
  • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands

Definitions

• the invention relates to a method for operating a water-conducting household appliance with a drum for receiving objects to be treated, a drive motor, a control device, at least one spectrometer, which comprises at least one radiation source, at least one radiation detector and an evaluation unit.
• the invention also relates to a suitable for carrying out the method water-conducting household appliance.
• a home appliance generally has one or more sensors, which may include spectrometers.
• Household appliances with spectrometers are therefore already known in the above-mentioned contexts.
• a disadvantage of the prior art solutions is that spectrometers are generally fixedly mounted in a home appliance. The scope of application of the spectrometers used is therefore limited.
• Another disadvantage is that measurements made during the execution of treatment programs do not provide the quality and accuracy of the information obtained. This is the case in particular with spectrometers with a low detection speed. It would therefore be desirable to be able to provide a method and a household appliance for carrying it out that can improve the accuracy of sensory information.
• the publication DE 10 2012 017 323 A1 describes a water-conducting domestic appliance, in particular a laundry treatment appliance for washing laundry, with a treatment area, a metering pump, at least one treatment agent container and a display device, wherein the treatment agent container is used for receiving an amount of a flowable treatment agent, which is sufficient for a plurality of treatments in the treatment area.
• the amount of the treatment agent delivered by the metering pump is displayed by the display device and / or a residual amount of the treatment agent in the treatment agent container is displayed by the display device.
• the publication DE 10 2010 002 773 A1 describes a dosing system comprising a dosing device which can be positioned inside a water-conducting domestic appliance for dispensing at least one preparation into the interior of the water-bearing domestic appliance, a cartridge which can be coupled to the dosing device for storing at least one flowable preparation, and a conductivity sensor , which is positioned in or on the dosing device so that a conductivity determination of washing or rinsing water during operation of the water-conducting household appliance is possible.
• the metering system further comprises a control unit which is coupled at least to the conductivity sensor, wherein at least one preparation has a conductivity of at least 500 ⁇ 5 / ⁇ , preferably at least 750 ⁇ 5 / ⁇ , particularly preferably at least 1000 ⁇ / ⁇ " ⁇ , most preferably at least 2,500 ⁇ / ⁇ and the dosing device is configured so that at least 20 ml, preferably at least 30 ml, more preferably at least 50 ml of this preparation during operation of the water-conducting household appliance from the metering device into the interior of the water-bearing household appliance is delivered.
• the publication DE 10 2010 039 61 1 A1 describes a dishwasher, in particular household dishwasher, with a control device, in which at least one washing program for executing a washing cycle comprising several partial rinses for cleaning and / or drying of items to be stored, and with an operating device for Input of operating commands for the control device.
• At least one operating command for executing one or more adaptation measures can be input at the operating device to at least one of the rinsing programs, by means of which the avoidance of stains on the items to be washed and / or the drying result on the items to be washed is improved on the basis of the adapted rinse program
• Publication DE 10 2014 212 294 A1 describes a water-conducting domestic appliance with a number of actuators for carrying out a plurality of wash programs, a user interface for selecting one of the plurality of wash programs, a sensor for providing a sensor signal for indicating a parameter for washing wash liquor used by items to be washed, a determination unit for determining a sensor setting from a plurality of predetermined sensor settings for the sensor, a control unit which is set up to control the actuators for carrying out the selected wash program by means of a signal processing using the sensor signal, and an adaptation unit for adjusting the signal processing depending on the particular sensor setting.
• radiation sensors e.g. IR sensors for detecting textiles, level and amount of water in the drum of washing machines and dryers are known.
• Publication WO 2001/046509 A1 describes a device for treating textiles with a device for detecting properties of a textile, wherein the device has at least one transmitting and at least one receiving element for transmitting or receiving electromagnetic radiation and one connected to the receiving element Evaluation circuit comprises, wherein the transmitted from the transmitting element and reflected by the textile and / or transmitted radiation from the receiving element can be received and evaluated in the evaluation circuit.
• the publication DE 10 2015 100 395 A1 describes a spectrometer, in particular for installation in a sensor module with a radiation source and following, a beam path defining or along the beam path arranged components: a sample space for a fluid to be examined, a first lens, a diffraction element , a second lens, and a detector. Between the sample space and the diffraction element, a restriction aperture is provided for limiting the effective diameter of the beam impinging on the diffraction element.
• the publication EP 0 816 551 B1 discloses an infrared temperature detection for a drum dryer control, in particular a dryer with a rotary drum for containing and spinning moist articles to be dried, a heating device for heating the articles, a blower unit for passing air over the articles in the drum and an infrared detecting device providing a control signal corresponding to the temperature of the articles in the drum.
• a method of detecting the completeness of a drying pass in a rotary drum dryer and an infrared sensing device which provides a measurement of the temperature of the articles in the drum.
• the publication EP 1 242 665 B1 describes a device for treating textiles with an evaluation circuit for detecting the type of textile and / or the moisture of a piece of laundry.
• the device uses transmitting and receiving elements for transmitting or receiving electromagnetic radiation as well as an evaluation circuit connected to the receiving element. Described is also a method for detecting properties of a piece of textile, for example in a washing machine or a tumble dryer.
• US Pat. No. 5,396,715 describes a microwave clothes dryer and a method of fire protection in which the temperature inside the drum is registered by means of an IR sensor and the operation of the dryer is interrupted when a predetermined value indicating the burning of laundry is reached.
• the invention thus relates to a method for operating a water-conducting household appliance with a drum for receiving objects to be treated, a drive motor, a control device, at least one spectrometer, which comprises at least one radiation source, at least one radiation detector and an evaluation unit, wherein it comprises the following steps includes:
• step (b) transmitting the measurement signal registered by the at least one radiation detector from step (a) to the evaluation unit, evaluating the measurement signal with an evaluation routine stored in the evaluation unit and transmitting the evaluated measurement signal to the control device;
• steps (a) to (c) are performed one or more times.
• detection period At acq is to be construed broadly and includes the time period in which, at least according to step (a) of the method according to the invention, the application of at least one first measuring range M-1 to at least one object in the drum with radiation and Register of the at least one first measuring range M- ⁇ reflected radiation from the at least one radiation detector as a measuring signal.
• step (a) the emission of the radiation from the at least one radiation source is continuous or pulsed. If the emission of the radiation is pulsed, the acquisition can be advantageous in particular.
• At acq also comprise emitting the radiation from the at least one radiation source, wherein the pulse duration and the pulse frequency are not limited according to the invention.
• step (a) the radiation is emitted in the entire wavelength range from ⁇ - 1 to ⁇ 2 and / or at a plurality of individual wavelengths and / or partial ranges within this wavelength range.
• the duration of a detection period At acq is not restricted according to the invention. It is usually dependent on the type and design of the spectrometer. Advantageously, however, is the duration of a detection period At acq 5ms-50ms.
• the term “measuring range M” encompasses the region on an object which is exposed to radiation from the at least one radiation source of the at least one spectrometer and from which radiation is reflected correspondingly to the radiation of the material after the interaction of the radiation
• the measuring range M is not restricted according to the invention, but the size of the measuring range is preferably 1 -2 cm.
• the selection of a treatment program by the control device in step (c) can advantageously also take place only when a predetermined number of evaluated measurement signals from step (b) has been transmitted. In this way, a possibly heterogeneous composition of the objects in the drum can be taken into account in the selection of a treatment program.
• a user about a possible incorrect loading of an item, so for example in a washing machine a red wool sock in a cargo of white cotton shirts, to be informed.
• the radiation reflected by the at least one first measuring range M-i on the at least one object is registered by the at least one radiation detector as a measuring signal.
• According to the invention is not limited, whether the object is still to be treated, is being treated or has already been treated in the water-bearing household appliance.
• Articles to be treated herein include articles which have not yet undergone treatment in the household water-conducting appliance. Articles to be treated may therefore be articles requiring, for example, a refreshment, one or more types of soiling or the like. As a rule, objects to be treated will be at least partially dry objects. Depending on the nature and / or degree of contamination, it is also conceivable that there is also a certain amount of moisture in the case of liquid contaminants, which may result, for example, from the spilling of a beverage.
• Objects during and / or after a treatment comprise all objects which have undergone and / or have undergone at least one treatment in the household appliance.
• the term treatment is to be understood broadly.
• a treatment is carried out according to the invention controlled by the control device. It may be a single operational measure in the water-bearing household appliance, such as merely moistening with a predetermined amount of water W F , but also the partial or complete execution of a treatment program.
• the type of objects is not limited according to the invention.
• the articles are particularly preferred items of laundry.
• treatment program is to be interpreted broadly herein. Depending on the type and design of the water-conducting household appliance, different numbers of treatment programs will be stored in the control device. For example, a high household appliance have more treatment programs than a low-priced.
• a treatment program can be a treatment program implemented in the factory in a water-bearing household appliance, one or more additional options or even a user-defined treatment program.
• the information with respect to which the measurement signal obtained in step (a) is evaluated is not restricted.
• the information can be any information that appears necessary for selecting and / or adjusting a treatment by the control device according to step (c) of the method according to the invention, such as, for example, a type and / or degree of contamination or a quantity of treatment agent.
• the evaluation of the measurement signal can also take place with regard to several such information. This is not limited according to the invention.
• step (b) of the method according to the invention the measurement signal is evaluated with regard to a type of textile.
• Textile types are for example cotton, silk, polyester, linen, acrylic or mixed fabrics. Namely, with the method according to the invention it is e.g. It is possible to identify individual items of laundry in the drum on the basis of the evaluated measurement signal (s).
• Data for the wavelength-dependent reflection behavior are preferably deposited in such a way that the plurality of individual wavelengths and / or partial regions within the wavelength range from ⁇ - 1 to ⁇ 2 comprise at least one wavelength in which no radiation is reflected. It is again preferred that the plurality of individual wavelengths and / or partial regions within the wavelength range from ⁇ - 1 to ⁇ 2 comprise at least five wavelengths or wavelength ranges. In a preferred embodiment of the method according to the invention, the wavelength range of ⁇ - 1 to ⁇ 2 is in the infrared.
• the wavelength range from ⁇ - 1 to ⁇ 2 then comprises at least one absorption band of at least one textile type.
• the drying process can be controlled very precisely with regard to a desired residual moisture level.
• the degree of moisture before the start of the drying process can also be determined so that an adaptation of the drying program to the type of textile and the degree of moisture is then possible very precisely.
• a loading amount of items of laundry in the drum of a water-conducting domestic appliance can also be determined.
• the method is carried out during a treatment program, wherein the drum by the drive motor with a frequency f drum > 200 U / min. is driven and in step (a), the power supply to the drive motor for an interruption period At res t is interrupted, wherein the detection period At acq within the interruption period At r est, wherein At acq ⁇ At res t- During the interruption period At res t can thus be ensured even for slow spectrometer that only the measurement signal of a measuring range M is registered by the at least one radiation detector and none Superimposition of reflected radiation from different measuring ranges M is registered.
• the power supply to the drive motor with a frequency f st0 p is interrupted and the drum comes to a standstill in the interruption period At res t, wherein the detection period At acq within the stoppage time At sti ii of the drum is, where At acq ⁇ At sti ii ⁇ At r est- This is particularly advantageous when the drive motor is not a synchronous motor with inverter.
• the power supply to the drive motor in the interruption period At res t is interrupted periodically, wherein the drum is decelerated to a minimum frequency f min and the detection period At acq is selected such that the minimum frequency f min within of the acquisition period At acq .
• the drum does not come to a standstill in this embodiment.
• the power supply is restored after passing through f min . This is particularly advantageous when the drive motor is a synchronous motor with inverter.
• the method is carried out during a treatment program, wherein in step (a) the drum with a frequency f dm m of 20 to 200 U / min. rotates. If the drum rotates at a frequency f dm m of 20 to 200 rpm, the inventors have advantageously found that it is also possible for slow spectrometers to ensure that the at least one radiation detector registers a measuring signal only from a single measuring range M ,
• a treatment step in which the drum has a frequency f d mm of 20 to 200 rpm is advantageously achieved. rotated, performed at the beginning of a treatment program, for example, during a wetting phase, whereas the interruption of the power supply usually in treatment steps with higher rotational speed, such as for example, a spin phase is performed. These are usually passed through later in a treatment program.
• the method is carried out during a treatment program with at least one reversing step, wherein step (a) is carried out during the rotation reversal of the drum.
• step (a) is carried out during the rotation reversal of the drum.
• the method is carried out before a treatment program, wherein the drum for a predetermined mixing period At mix with a predetermined frequency f mix before the implementation of step (a) rotates and in step (a) the drum in a predetermined drum position P dmm stands still. In this way, objects to be treated in particular can still be measured with the method according to the invention, and then in step (c) the selection of a treatment by the control device can take place.
• the method is carried out at least twice and the drum is moved from the drum position P d TM m, i before the method is carried out at least twice by a predetermined angle a d TM m to a drum position P dm m, 2 turned on.
• a predetermined angle a d TM m to a drum position P dm m, 2 turned on.
• the value for the angle a dmm is not restricted, but this is preferably 20-45 °.
• a distance x between the at least varies within the detection period At acq a radiation detector and the at least one first measuring range M- ⁇ by ⁇ + ⁇ .
• the deviation .DELTA. ⁇ can be advantageously chosen so that the distance between the at least one radiation detector and the at least one first measuring range M- ⁇ remains as constant as possible. In this way, measuring artifacts can be avoided by a distance-related increase in the spectral extinction.
• step (a) of the method according to the invention can also be carried out continuously during the execution of a treatment program in the water-conducting domestic appliance.
• step (b) In order to evaluate the measurement signals in step (b), at least one relationship is then preferably stored in the evaluation unit, which analyzes and sorts the sorting of the obtained measurement signals with respect to measurement artifacts and / or possible measurement range overlays. In this case, only the measurement signals which are free of inaccuracies are evaluated and transmitted to the control device in step (c).
• the invention further relates to a water-conducting domestic appliance having a drum for receiving objects to be treated, a drive motor, a control device, at least one spectrometer which comprises at least one radiation source, at least one radiation detector and an evaluation unit, wherein the control device is set up to carry out a method, that includes the following steps:
• step (B) transmitting the registered from the at least one radiation detector measurement signal from step (a) to the evaluation unit, evaluating the measurement signal with a in the
• Evaluation unit stored evaluation routine and transmitting the evaluated measurement signal to the control device; and (c) selecting and / or optionally adjusting a treatment by the controller with respect to the evaluated measurement signal;
• steps (a) to (c) are performed one or more times.
• the water-conducting household appliance is preferably selected from the group comprising a washing machine, a washer-dryer and a tumble dryer.
• the water-conducting domestic appliance is preferably a washing machine or a washer-dryer.
• the water-bearing household appliance is a washing machine.
• the household appliance according to the invention generally has a treatment agent container and preferably also a dosing unit.
• the type and configuration of the dosing unit is not limited according to the invention. It may be a dosing unit for the manual dosing of treatment agent or an automated dosing unit.
• the dosing unit is an automated dosing unit, which is connected to the control device and can be controlled by it in order to dose treatment agent, then advantageously a treatment agent quantity can also be added in step (c) as adaptation of a treatment with respect to the evaluated measurement signal, for example - Wise when falling below an optimal dosage C o t.
• the at least one radiation source of the at least one spectrometer is not restricted, so that, for example, an infrared (IR), ultraviolet (UV) or UV-VIS (ultraviolet and visible range) radiation source can be used.
• IR infrared
• UV ultraviolet
• UV-VIS ultraviolet and visible range
• the at least one radiation source can be a broadband source, a tunable radiation source, but also a narrowband radiation source, such as an IR LED.
• the radiation source can also have optical aids, such as a focusing optics, filter plates, filter films or coatings, or also a MOEMS Fabry-Perot frequency filter, which can enable adjustment of a wavelength range.
• the spectrometer may also have a plurality of such radiation sources, which may also be different.
• the at least one radiation source is a broadband source for emitting radiation in the infrared range.
• the radiation source is used to emit radiation in the near infrared region and is selected from the group comprising a tungsten halogen lamp and a MOEMS black body radiator.
• the at least one radiation detector is not restricted according to the invention.
• the radiation detector can be, for example, a broadband detector with at least one sensitive detector surface N.
• the radiation detector can also have a plurality of sensitive surfaces N, or else a linear array of detector surfaces N, for example in the form of pixels.
• the detector may additionally comprise optical aids, such as a MOEMS Fabry-Perot frequency filter, narrow-band filters or a dispersive wedge.
• the material from which the radiation detector is made, is not limited according to the invention. However, the radiation detector preferably consists at least of a semiconductive material.
• the at least one radiation detector has a frequency filter; the frequency filter is particularly advantageously a MOEMS Fabry-Perot frequency filter.
• the arrangement of the at least one spectrometer in the water-conducting household appliance is not limited.
• the drum has at least one Wäschemit commentary and the at least one spectrometer is arranged in the at least one Wäschemit parade. If the objects to be treated are items of laundry, then in particular the laundry movement in the drum can be slowed even further, but nevertheless a thorough mixing at the spectrometer position can be ensured.
• the at least one spectrometer is arranged on the lateral surface of the drum. As a rule, the evaluation unit of the spectrometer is connected to the control device, wherein a wireless connection is also possible.
• the drive motor is a synchronous motor with inverter. In this way, the power supply of the drive motor can be interrupted periodically.
• the water-conducting household appliance preferably additionally has an interface for wireless data transmission, wherein the control device is then set up for the wireless exchange of information.
• the water-conducting household appliance is also suitable for operation in a network and can be operated by means of an external operating unit, such as a mobile phone and / or a tablet PC, preferably via an app.
• the water-conducting household appliance is then integrated into a home network with at least one further household appliance.
• information for controlling treatment programs can then be transferred from one household appliance to another.
• the water-conducting domestic appliance is, for example, a washing machine
• a determined residual moisture content for washed items of laundry can be transferred to a dryer in the home network and the drying program to begin with can then be adapted precisely to the residual moisture content.
• household appliances have at least one display unit, which can be designed to output information in the form of text, image and / or characters, colored and / or black and white, static and / or animated.
• information and / or warnings can be output to a user via the display device.
• the display device is very particularly preferably an external display device, for example the touch screen of a smart phone or tablet PC.
• the invention has numerous advantages. The method according to the invention makes it possible to record particularly accurate measurement signals by ensuring that a measurement signal is registered by only one measurement area on an object by a radiation detector. Measuring artifacts and superposition of measuring signals from different measuring ranges can thus be avoided.
• a selection and / or optionally adaptation of a treatment of objects by the control device can then take place more precisely.
• a resource-saving and safe operation for example, with regard to incorrect loading, a water-bearing household appliance can be achieved.
• Fig. 1 shows a schematic representation of the method according to the invention in step (a) underlying measurement principle.
• Fig. 2 shows, in a non-limiting embodiment, a schematic representation of the events taking place within a detection period Atacq .
• Fig. 3 shows in a non-limiting embodiment, a suitable for carrying out the method according to the invention water-conducting household appliance.
• FIG. 1 shows a schematic representation of the measuring principle underlying the method according to the invention in step (a).
• the measuring principle is based on a reflection measurement.
• a radiation source S, 2 an object 8, here a laundry with emitted radiation 6 is applied.
• a diffuse reflection of radiation can be described by the Lamert-Beer law.
• the diffusely reflected radiation 7 is then registered by the radiation detector D, 3 as a measurement signal.
• the registered measurement signal is then transmitted in step (b) from the radiation detector D, 3 to the evaluation unit A, 4 and evaluated by the latter by means of a stored evaluation routine.
• the x 9 indicates the distance between the radiation detector 3 and the object 5 Distance x during a detection period At acq , in which at least the exposure of a measuring area on the object to radiation and the registration of the reflected radiation 7 as a measuring signal takes place, by a maximum of a predetermined deviation + ⁇ .
• a measuring area 8 of different size is generated on the object 5, to which a respective measuring signal registered by the radiation detector D, 3 belongs.
• Figure 2 shows, in a non-limiting embodiment, a schematic representation of at least events occurring within a detection period Atacq 10. These comprise at least the application of a measuring range M with radiation from the at least one radiation source of the at least one spectrometer and the registration of the radiation reflected by the measuring range M as a measuring signal.
• the emission of the radiation from the at least one radiation source of the at least one spectrometer can also take place within the detection period At acq . For example, when the emission of the radiation from the at least one radiation source is pulsed.
• the length of the detection period At acq 10 can in any case vary depending on the design of the at least one spectrometer.
• the duration of a detection period At acq 10 0.1 to 50 ms, especially 5-50ms.
• FIG. 3 shows, in a non-limiting embodiment, a water-conducting household appliance according to the invention which is suitable for carrying out the method according to the invention.
• the water-conducting domestic appliance is designed in this embodiment as a washing machine 13.
• the washing machine 13 has a housing 25, in which a tub 15 is arranged, in which a drum 16 for receiving laundry 17 is rotatably mounted about an axis perpendicular to the plane axis.
• two Wäschemit choir 14 are arranged.
• a tub outlet line 30 is connected to a drain opening 31 in a bottom of the tub 15, which leads via a lint 29 to a suction side of a pump 27.
• a drain line 24 is connected to a pressure side of the pump 27.
• Outflow line 24 flows outside the housing 25, not shown here, in a domestic drainage pipe or a floor drainage.
• a variable-speed drive motor 26, which may be designed, for example, as a permanent-magnet, multi-phase synchronous motor with a MOSFET component and a power detector 28, is connected to the pump 27 and the drum 16 in an effective manner.
• the washing machine 13 may also include two drive motors 26 which are each individually connected to the pump 27 and the drum 16 to drive and drive only the respective device component.
• FIG. 3 also shows an automated dosing unit 20 for treatment agent, which is connected to an induction bowl 22.
• the dispenser tray 22 is the liquor tank 15 from a fresh water line 23 coming from supplied water.
• a check valve 21 in the fresh water line 23, which is actuated by a control device 18 in accordance with a treatment program sequence or optionally in accordance with an evaluated measurement signal transmitted by an evaluation unit 35 of a spectrometer 36.
• the washing machine 13 also has in this embodiment a display 19, which is suitable for displaying information in the form of text, image and / or animation in black and white and / or color.
• the spectrometer 36 is designed in this embodiment as an infrared spectrometer and has a corresponding radiation source 33, a radiation detector 34 and an evaluation unit 35.
• the spectrometer is integrated in one of the two Wäschemit facilitator 14. In this way, the spectrometer 36 can be placed comparatively close to the laundry 17. If the method according to the invention is carried out, for example, during the rotation 32 of the drum 16, the power supply to the drive motor 26 can be interrupted with a frequency fstop, so that the drum 16 comes to a standstill within an interruption period At r est, wherein the detection period At acq within the Standstill time Atstin the drum 16 is located.
• step (a) of the method according to the invention can then be measured according to step (a) of the method according to the invention.
• the power supply can then be restored so that the drum 16 is accelerated again by the drive motor 26 to a predetermined rotation 32. that can.
• the method according to the invention can be carried out, for example, at specific times stored in the control device 18 during a treatment program.
• the control device 18 can then according to step (c) of the method according to the invention, for example, continuously adjust the treatment program performed.

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• 2017
  • 2017-05-31 DE DE102017209135.5A patent/DE102017209135A1/de active Pending
• 2018
  • 2018-05-08 CN CN201880035285.9A patent/CN110691875A/zh active Pending
  • 2018-05-08 WO PCT/EP2018/061858 patent/WO2018219602A1/de active Application Filing

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