DE102017216622B3 - Home appliance with a sensor - Google Patents

Abstract

The present invention relates to a household appliance (100) with a display element (109) for displaying an object (115), a sensor (111) for detecting a hand movement (117) of a user of the domestic appliance (100), and a controller for controlling an operating parameter of the household appliance (100). The controller is configured to change an object property of the object (115) displayed on the display element (109) in response to the detected hand movement (117) of the user. The controller is configured to change the operating parameter of the household appliance (100) in response to the detected hand movement (117) of the user.

Description

The present invention relates to a household appliance with a sensor and a method for controlling such a household appliance.

In a conventional home appliance LCD, TFT or LED displays are often used to give the user the ability to make certain settings and inputs to the home appliance. The input of the user is often done via capacitive touch inputs of the display, in which case the inputs of the user must be coupled mechanically consuming or consuming to be provided touch-sensitive films are realized on the displays. Often, touch-sensitive displays have the disadvantage that the mechanical design of the touch-sensitive displays limits the user's ability to input and adjust.

In the DE 10 2013 208 581 A1 an operating method and an operating device for an electrical appliance is disclosed, wherein in the electrical appliance, an operating sensor with distance sensors is provided, which can detect the distance of a held in front of the distance sensor hand.

In the EP 2 824 231 A1 discloses a household appliance with a sensor which is adapted to determine a user at a predetermined position with respect to the household appliance.

In the EP 3 012 532 A1 a method for operating a household appliance is disclosed, which has at least one sensor for detecting a user of the household appliance.

The publication DE 103 61 341 A1 discloses a device for operating a hob.

The publication DE 10 2014 011 771 A1 discloses an operating device for an electronic household appliance.

The publication EP 3 187 785 A1 discloses a home appliance device comprising a gesture detection.

The Utility Model DE 20 2012 005 255 U1 discloses an operating device with a gesture monitoring unit.

The publication DE 10 2013 203 930 A1 discloses a method and apparatus for controlling an electrical appliance.

It is the object underlying the invention to provide a household appliance with an advantageous gesture recognition device for controlling the household appliance.

This object is solved by the objects with the features according to the independent claims. Advantageous embodiments are the subject of the dependent claims, the description and the drawings.

According to one aspect, the object according to the invention is achieved by a domestic appliance having a display element for displaying an object, a sensor for detecting a hand movement of a user of the domestic appliance, and a controller for controlling an operating parameter of the household appliance, wherein the controller is designed to have an object property of the object displayed on the display element is changed in response to the detected hand movement of the user, and wherein the controller is adapted to change the operating parameter of the household appliance in response to the detected hand movement of the user.

This achieves the technical advantage that the sensor, which can detect and evaluate the hand movement of the user, can reduce the construction and the costs of the display element, in particular a control panel, of the domestic appliance and a greater freedom of design in the design of the display element or the Control panel, allows. In addition, gaps and cracks on the household appliance, in which dirt can get avoided in the design of the household appliance, so that a simpler cleaning of the display element, or the control panel, is made possible.

The sensor for detecting the user's hand movement is designed to detect complex operator actions of the user in order to effectively modify objects displayed on the display element and to control the operating parameters accordingly. Thus, an advantageous gesture control of the household appliance can be ensured by the user.

The object displayed on the display element may comprise a plurality of different objects, e.g. offset in the display element are arranged.

Here, in particular, in addition to the sensor, one or more further sensors may be arranged in the domestic appliance in order to ensure a particularly accurate and detailed detection of the hand movement of the user. The at least one sensor can be arranged in particular on a front side of the household appliance, and in particular be arranged behind a transparent cover for electromagnetic radiation.

An advantage of the gesture control is that the controls are not impaired by moisture, grease, or other contaminants in their function, since a direct contact between the user's hand and the household appliance is no longer necessary. In addition, barrier-free operation of household appliances can be ensured for users with physical disabilities.

A household appliance is a device that is used for household management. This may be a large household appliance, such as a washing machine, a tumble dryer, a dishwasher. But this can also be a small household appliance, such as a water heater, a coffee machine, a food processor or a carpet cleaning machine.

In an advantageous embodiment of the household appliance, the object property comprises a movement of the object displayed on the display element, and the controller is configured to move the object displayed on the display element in accordance with the detected hand movement of the user.

This achieves the technical advantage that the hand movement of the user detected by the sensor can be translated directly into a corresponding, i.e.. rectified, movement of the object can be transmitted on the display element. For example, when the user turns his hand, the object on the display element is also rotated in accordance with the detected hand movement of the user. For example, when the user moves his hand in one direction, the object on the display element is also moved in the same direction in accordance with the detected hand movement of the user.

In an advantageous embodiment of the household appliance, the changed object property of the object comprises a movement, in particular vertical, horizontal and / or diagonal movement of the object on the display element, a rotation, in particular clockwise and / or counterclockwise rotation, of the object on the display Ad element, resizing, in particular shrinking and / or enlarging, the object on the ad element, changing the color of the object on the ad element, and / or changing the transparency of the object on the ad element.

This achieves the technical advantage that the sensor is designed to detect a multiplicity of different hand movements of the user, the multiplicity of different user hand movements resulting in a large number of different changes in the object properties of the object on the display element. As a result, the user can perform a particularly diverse control of the object on the display element by different hand movements.

In an advantageous embodiment of the household appliance, the display element comprises a graphical user interface for displaying the object, wherein the object at least one button, in particular button, at least one toolbar, in particular toolbar and / or toolbar, at least one slider, at least one selection list and / or at least one Symbol includes.

Thereby, the technical advantage is achieved that the user can control a large number of different objects on the display element by the detected hand movement, whereby the user has a large variability of control options available. By displaying classic controls, such as Program dials, setting keys and sliders, which are known from laundry care equipment with analogue settings, can be applied already learned operations, such as setting a washing program by a rotary selector. As a result, the operation of the household appliance for the user can be simplified and made more intuitive.

In an advantageous embodiment of the household appliance, the operating parameter of the household appliance comprises a selection of a program of the household appliance, a selection of a program option of a selected program of the household appliance, an operating temperature of the household appliance, and / or an operating period of the household appliance.

As a result, the technical advantage is achieved that a large number of different operating parameters of the household appliance can be controlled by the detected hand movement of the user. If the household appliance is designed as a laundry care appliance, the selection of a program of the household appliance may include, for example, the selection of a fine wash, wool wash, colored wash, and / or cook-out program. The program option may include a spin adjustment, a softener addition adjustment, etc. The operating temperature selection may include a selection of a washing temperature and the operating duration selection may include a duration of a laundry care program.

In an advantageous embodiment of the household appliance, the object comprises a rotatable knob, the detected hand movement of the user comprising rotating the hand clockwise and / or counterclockwise, the controller is adapted to rotate the knob in accordance with the detected hand movement of the user on the display element In particular, the operating parameter includes various programs of the home appliance, and the controller is configured to select a program from the various programs of the home appliance in response to the hand turning clockwise and / or counterclockwise.

Thereby, the technical advantage is achieved that by turning the hand of the rotatable knob can be advantageously rotated on the display element, and that a favorable selection of a program from a variety of different programs can be ensured.

In an advantageous embodiment of the household appliance, the object comprises a slider, the detected hand movement of the user comprises a translatory hand movement, the controller is designed to move the slider according to the detected translational hand movement of the user on the display element, the operating parameter includes in particular different operating temperatures of a program of the household appliance, and the controller is adapted to select an operating temperature of the household appliance in response to the translational hand movement of the user.

As a result, the technical advantage is achieved that an advantageous selection of an operating temperature from a plurality of different operating temperatures can be ensured by the translational hand movement of the user.

In an advantageous embodiment of the household appliance, the object is designed as a button, in particular a button, the detected hand movement of the user comprises a translational movement in the direction of the button, the operating parameter in particular comprising various program options of a program of the household appliance, and wherein the controller is designed to select a program option of the home appliance in response to the translational movement of the user.

As a result, the technical advantage is achieved that an advantageous selection of a program option from a plurality of different program options can be ensured by the translational hand movement of the user in the direction of the button, in particular by a virtual pressing of the button or button.

In an advantageous embodiment of the household appliance, the household appliance comprises a door for closing a device opening of the household appliance, the domestic appliance has an electric door opening device for opening the appliance door, the sensor is designed to detect a further hand movement of the user, and the controller is designed activate electric door opening device in response to the detected further hand movement to open the door.

As a result, the technical advantage is achieved that an effective opening of the door by the electric door opening device is ensured by the further detected hand movement.

In an advantageous embodiment of the household appliance, the household appliance is designed as a laundry care device with an electrically extendable dispensing tray, the sensor is designed to detect a further hand movement of the user, and the controller is configured to activate the electrically extendable dispenser tray in response to the detected further hand movement to extend the dispenser tray.

As a result, the technical advantage is achieved that an effective extension of the electrically extendable dispenser shell is ensured by the further detected hand movement.

In an advantageous embodiment of the household appliance, the household appliance has a signal device for outputting an acoustic signal, and the controller is designed to activate the signal device in response to the detected hand movement in order to output the acoustic signal.

This achieves the technical advantage that, in addition to the visual signal when the object parameter of the object or the operating parameter of the domestic appliance changes, in response to the detected hand movement, an advantageous output of the acoustic signal ensures effective acoustic feedback.

In an advantageous embodiment of the household appliance, the sensor comprises a radar sensor which is designed to emit a first radar signal in the direction of the user's hand and which is designed to receive a second radar signal reflected by the user's hand in order to obtain a comparison of the first radar signal and the second radar signal to detect the hand movement of the user.

As a result, the technical advantage is achieved that a particularly effective detection of the hand movement of the user is made possible by the radar signal emitted by the radar sensor.

In an advantageous embodiment of the household appliance, the controller has a reference unit on which a plurality of reference hand movements are stored, each reference hand movement being associated with an object property of the object displayed on the display element and an operating parameter of the household appliance, and wherein the controller is detected which has detected Comparing hand movement of the user with a reference hand movement, wherein the controller is configured to change the object property of the object displayed on the display element and the operating parameter of the household appliance, when the detected hand movement corresponds to the reference hand movement.

As a result, the technical advantage is achieved that by comparing the detected hand movement with a reference hand movement of the user, the detected hand movement of the user by the controller can be easily and advantageously associated with a change in the object property and a change in the operating parameter.

In an advantageous embodiment of the household appliance, the controller is designed to store a detected hand movement of the user as a reference hand movement during a recording process.

As a result, the technical advantage is achieved that different hand movements of the user can be detected particularly advantageous by the detection process of the control and can be stored as Referenzhandbewegungen so that detected at a later time hand movements of the user can be particularly advantageous associated with the previously stored reference hand movement.

According to a second aspect, the object according to the invention is achieved by a method for controlling an operating parameter of a domestic appliance, wherein the household appliance comprises a display element for displaying an object, a sensor for detecting a hand movement of a user of the household appliance, and a controller for controlling an operating parameter of the household appliance wherein the method comprises the following method steps, detecting a hand movement of a user of the household appliance by the sensor; Altering an object property of the object displayed on the display element in response to the detected hand movement of the user; and changing an operating parameter of the household appliance in response to the detected hand movement of the user.

Thereby, the technical advantage is achieved that a particularly effective changing of an operating parameter and the object property of the object displayed on the display element in response to the detected hand movement of the user can be performed.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

• 1 eine schematische Ansicht eines Haushaltsgeräts mit einem Radarsensor;
• 2A-2F perspektivische Ansichten eines Haushaltsgeräts mit einem Radarsensor, welcher ausgebildet ist, eine Handbewegung des Nutzers zu erfassen; und
• 3 eine schematische Darstellung eines Verfahrens zum Steuern eines Betriebsparameters eines Haushaltsgeräts.

Show it:

• 1 a schematic view of a household appliance with a radar sensor;
• 2A-2F perspective views of a household appliance with a radar sensor which is adapted to detect a hand movement of the user; and
• 3 a schematic representation of a method for controlling an operating parameter of a household appliance.

1 shows a schematic view of a household appliance 100 , such as a laundry care device designed as a washing machine. The laundry care appliance comprises an induction bowl 101 , And can be filled in the detergent or other Wäschepflegesubstanzen. The laundry care appliance comprises a appliance door 103 for loading the laundry care appliance with laundry. The appliance door 103 closes a device opening 105 on a front side 107 of the laundry care device.

The laundry care device also has a display element 109 to display an object. The display element 109 includes a display, in particular an LCD display, LED display or a TFT display.

The laundry care device also has a sensor 111 , in particular a radar sensor 111 , which is adapted to detect hand movements of a user of the laundry care device in order to assist the user in the laundry care process and to provide him with an intuitive input instrument. The sensor 111 , in particular radar sensor 111 , is at the front 107 arranged the laundry care device, and is designed radar radiation 112 to emit.

However, it may be necessary (eg due to signal resolution), the position of the sensor 111 to optimize, or one or more other sensors 111 to use.

Likewise, the signal range of the sensor 111 by radar wave-transmissive materials on the housing of the front 107 be increased by reflectors or locally smaller wall thicknesses eg in the control panel. To realize flexible or more complex, situational operator inputs and operator outputs, the laundry care device has the display element 109 , which is preferably formed as a large full-color display to signal an optical feedback.

The sensor 111 physically detects the movement of the user's hand, where control is available locally in the laundry machine, or is available as a cloud application remotely in the laundry machine, using the appropriate algorithms from the signals, various operations and process actions, such as insertion Detecting laundry items in a laundry drum of the laundry care device.

A software solution for learning new gestures after the initial programming is optionally available to the user so that a learning system can be provided.

There are several preferred variations on how gesture detection can be used to improve user interaction with the laundry care device. Specific applications include e.g. the ability to perform complex control functions through a more intuitive, i. To replace simpler, and flexibly teachable control, extending the gesture detection from the control panel to the entire device and performing user actions on or before the laundry care device.

In addition, the user actions include an Einlerne option for new gestures, a user identification, as well as individual reactions of the user, as well as a detection of the laundry movement, as well as easier operation of the machine by people with disabilities. Furthermore, further functions include the non-contact operation of the machine without being adversely affected by soiling and / or build-up of moisture on the control panel, the detection of children or children's hands and locks of the device, as well as the recognition of the geometry or outlines of held laundry items for identification and selection of the appropriate laundry care program, or the detection and differentiation of regional and / or country-specific gestures, and the unlocking of the laundry care device by trained gestures, or the detection of the environment around the machine for evaluation of the site or for spin / vibration detection / - Characterization.

The 2A to 2F show perspective views of a laundry care device with a radar sensor 111 , which is formed, a hand movement 117 of the user.

In the laundry care device is a display element 109 with a graphical user interface 113 used, on which, or on which objects 115 be displayed, the objects 115 include for the laundry machine typical controls. That in the 2A represented object 115 includes a rotatable knob 115 - 1 , That in the 2 B represented object 115 includes a slider 115 - 2 , That in the 2C , or 2D shown object 115 includes a button 115 - 3 , especially button 115 - 3 ,

A sensor 111 , in particular a radar sensor 111 , this can be a hand movement 117 capture a user of the laundry care device. A controller is formed, an object parameter of the respective object 115 in response to the detected hand movement 117 of the user, so that the user is provided an optical feedback in which the object parameters of the object 115 on the ad element 109 to be changed.

In addition, a further acoustic feedback through a signal unit or an optical signal (such as status lights, LED display, etc.) is possible. Sequential operations can be done on the same area of the display element 109 such as wash program selection, wash temperature selection, or other options.

In a learning mode, alternative gestures can also be taught to the machine on a personal basis, eg for handicapped persons without index finger, or only with left arm. In a so-called "Laundry Care Guide" mode "the radar sensor 111 be turned on to detect user movement to assist customers throughout the laundry care journey process. For this purpose, the user actions are analyzed, eg opening / closing the detergent drawer, filling detergent, inserting or removing laundry, door open, - or close, program selection, and checked for malfunction.

The machine may then provide appropriate user-dependent recommendations (e.g., via display, projection, or voice output) for the next step (e.g., pour detergent, or forget to stuff laundry in half-load program too much in a drum, etc.).

Through the radar sensor 111 with all interactions of the user with the Laundry care device can be detected and evaluated, the structure and the cost of a control panel can be drastically reduced. Here, no individual elements are needed, a simpler structure of the control electronics or complex controls are ensured. In addition, gaps and scratches on the device, in which dirt can get into the component design could be avoided, whereby an easier cleaning of the smooth control panel can be ensured.

Another advantage of the gesture control is that the controls are not impaired by moisture, grease, detergents or other contaminants in their function. Likewise, in the case of adaptive systems, operating errors can be avoided, such as e.g. Swipe instead of tapping on a button, which allows the user to re-learn their own gestures at any time.

A learning gestures control can be designed software so that the user always has the ability to control the device with the gestures that he can clearly perform. To do this, the user interface must be equipped with an easy-to-learn controller. Also temporary restrictions, such as carrying a full laundry basket, no longer have to stand in the way of using the machine. The user could make other body movements, e.g. to open the door also set at a certain distance.

Preferably, the manufacturer offers a complete set of pre-set meaningful gestures from which the user can select for him or her. Here, cultural differences in operator actions and possible tax gestures can and must be taken into account. The detection of gestures can also be used for user recognition with the help of appropriate learning algorithms. This allows a security function to be implemented: only authorized persons can operate the device, which ensures an effective parental control.

A new door opening gesture can be designed so that opening the door allows a more appealing, elegant operation.

According to the embodiment in the 2A includes the object 115 a rotatable knob 115-1 , The detected hand movement 117 of the user includes a turn 119-1 the hand clockwise and / or counterclockwise, wherein the controller is formed, the rotatable knob 115-1 according to the detected hand movement 117 of the user on the ad element 109 to rotate, and the controller is adapted to an operating parameter of the household appliance 100 to change, in particular a program from a variety of different programs of the household appliance 100 select.

According to the embodiment in the 2 B includes the object 115 a slider 115-2 , The detected hand movement 117 the user includes a translatory hand movement 119-2 wherein the controller is configured, the slider 115-2 according to the detected hand movement 117 of the user on the ad element 109 to move, and the controller is formed, an operating temperature of the household appliance 100 to change.

According to the embodiment in the 2C and the 2D includes the object 115 a button 115-3 , The detected hand movement 117 the user includes a translatory hand movement 119-3 , where the controller is formed, the button 115- 3 according to the detected hand movement 117 of the user on the ad element 109 to move. In the in 2C illustrated embodiment includes the detected hand movement 117 a movement of the thumb towards the button 115-3 , In the in 2D illustrated embodiment includes the detected hand movement 117 a movement of the index finger parallel to the direction of the button 115-3 ,

According to the embodiment in the 2E is the household appliance 100 as a laundry care device with an electrically extendable Einspülschale 101 trained and is the sensor 111 trained, another hand movement 117-2 of the user. The control is designed, the electrically extendable Einspülschale 101 in response to the detected further hand movement 117-2 to activate the dispenser tray 101 extend.

According to the embodiment in the 2F includes the household appliance 100 a device door 103 for closing a device opening 105 of the household appliance 100 , The household appliance 100 has an electric door opening device 121 for opening the appliance door 103 on. The sensor 111 is trained, another hand movement 117-2 of the user, and the controller is formed, the electric door opening device 121 in response to the detected further hand movement 117-2 to activate the appliance door 103 to open.

3 shows a method for controlling an operating parameter of a household appliance.

The procedure 200 comprises as the first method step the detection 201 a hand movement 117 a user of the household appliance 100 through a sensor 111 ,

The procedure 200 includes as a second process step the changing 203 an object property of the on the ad element 109 displayed object 115 in response to the detected hand movement 117 of the user.

The procedure 200 comprises as a third process step the changing 205 an operating parameter of the household appliance 100 in response to the detected hand movement 117 of the user.

All features explained and shown in connection with individual embodiments of the invention may be provided in different combinations in the article according to the invention, in order to simultaneously realize their advantageous effects.

The scope of the present invention is given by the claims and is not limited by the features illustrated in the specification or shown in the figures.

LIST OF REFERENCE NUMBERS

100

household appliance

101

dispenser tray

103

door

105

opening devices

107

Front of the laundry care appliance

109

display element

111

sensor

112

radar beams

113

Graphical user interface

115

object

115-1

Rotatable knob

115-2

slider

115-3

button

117

Detected hand movement of a user of the household appliance

117-2

Further detected hand movement of a user of the household appliance

119-1

Turn the hand clockwise and / or counterclockwise

119-2

Translational hand movement

119-3

Translational hand movement

121

Electric door opening device

Claims (14)

Domestic appliance (100) with a display element (109) of a control panel for displaying an object (115), a sensor (111) for detecting a hand movement (117) of a user of the household appliance (100), and a controller for controlling an operating parameter of the domestic appliance ( 100), wherein the controller is configured to change an object property of the object (115) displayed on the display element (109) in response to the detected hand movement (117) of the user, the controller being responsive to the operating parameter of the home appliance (100) to the detected hand movement (117) of the user, characterized in that the sensor (111) comprises a radar sensor (111) which is adapted to emit a first radar signal in the direction of the user's hand and which is formed receive a second radar signal reflected by the user's hand to compare the first radar signal with the second radar rsignal to detect the hand movement (117) of the user. Household appliance (100) after Claim 1 characterized in that the object characteristic comprises a movement of the object (115) displayed on the display element (109), and in that the controller is configured to display the object (115) displayed on the display element (109) in accordance with the detected hand movement (117) of the object User to move. Household appliance (100) after Claim 1 or 2 , characterized in that the changed object characteristic of the object (115) comprises a movement, in particular vertical, horizontal and / or diagonal movement, of the object (115) on the display element (109), a rotation, in particular clockwise and / or counterclockwise rotation clockwise, the object (115) on the display element (109), a change in size, in particular reduction and / or enlargement, of the object (115) on the display element (109), a change in the color of the object (115) on the Display element (109) and / or a change in the transparency of the object (115) on the display element (109). Domestic appliance (100) according to one of the preceding claims, characterized in that the display element (109) comprises a graphical user interface (113) for displaying the object (115), wherein the object (115) at least one button (115-3), in particular Button, at least one toolbar, in particular toolbar and / or toolbar, at least one Slider (115-2), at least one selection list and / or at least one symbol includes. Domestic appliance (100) according to one of the preceding claims, characterized in that the operating parameter of the domestic appliance (100) is a selection of a program of the household appliance (100), a selection of a program option of a selected program of the household appliance (100), an operating temperature of the household appliance (100 ), and / or an operating period of the household appliance (100). Domestic appliance (100) according to one of the preceding claims, characterized in that the object (115) comprises a rotatable knob (115-1) in that the detected hand movement (117) of the user is a clockwise rotation (119-1) of the hand and / or counterclockwise, that the controller is configured to rotate the rotatable knob (115-1) on the display element (109) in accordance with the detected hand movement (117) of the user, the operating parameter particularly including various programs of the household appliance (100 ), and wherein the controller is configured to select a program from the various programs of the household appliance (100) in response to the hand turning clockwise and / or counterclockwise. Domestic appliance (100) according to one of the preceding claims, characterized in that the object (115) comprises a slider (115-2) that the detected hand movement (117) of the user comprises a translatory hand movement (119-2) that the controller is configured to move the slider (115-2) according to the detected translational hand movement (119-2) of the user on the display element (109), the operating parameter in particular different operating temperatures of a program of the household appliance (100), and wherein the control is configured to select an operating temperature of the household appliance (100) in response to the translational hand movement (119-2) of the user. Domestic appliance (100) according to one of the preceding claims, characterized in that the object (115) comprises a button (115-3), in particular key, that the detected hand movement (117) of the user a translational movement (119-3) in Direction of the button (115-3), wherein the operating parameter comprises in particular various program options of a program of the household appliance (100), and wherein the controller is configured, a program option of the household appliance (100) in response to the translational movement (119-3) of User. Household appliance (100) according to one of the preceding claims, characterized in that the household appliance (100) comprises a device door (103) for closing a device opening (105) of the household appliance (100), that the domestic appliance (100) has an electric door opening device (121). for opening the appliance door (103), the sensor (111) is designed to detect a further hand movement (117-2) of the user, and in that the controller is designed to open the electric door opening device (121) in response to the detected further hand movement (117-2) to open the appliance door (103). Domestic appliance (100) according to any one of the preceding claims, characterized in that the domestic appliance (100) is designed as a laundry care appliance with an electrically extendable dispenser tray (101), that the sensor (111) is designed, a further hand movement (117-2) of the user, and that the controller is adapted to activate the electrically extendable dispenser tray (101) in response to the detected further hand movement (117-2) to extend the dispenser tray (101). Domestic appliance (100) according to one of the preceding claims, characterized in that the household appliance (100) has a signaling device for outputting an acoustic signal, and in that the controller is adapted to the signaling device in response to the detected hand movement (117, 117-2) activate to output the acoustic signal. Domestic appliance (100) according to one of the preceding claims, characterized in that the controller has a reference unit on which a plurality of reference hand movements are stored, each reference hand movement an object property of the displayed on the display element (109) object (115) and an operating parameter of Household appliance (100) is assigned, and wherein the controller is configured to compare the detected hand movement (117) of the user with a reference hand movement, and wherein the controller is formed, the object property of the displayed on the display element (109) object (115) and to change the operating parameter of the household appliance (100) when the detected hand movement (117) corresponds to the reference hand movement. Household appliance (100) after Claim 12 , characterized in that the controller is adapted to store a detected hand movement (117) of the user as a reference hand movement during a detection process. Method (200) for controlling an operating parameter of a domestic appliance (100), wherein the domestic appliance (100) has a display element (109) of a control panel for displaying an object (115), a sensor (111) for detecting a hand movement (117) of a user of the Domestic appliance (100), and a controller for controlling an operating parameter of the household appliance (100), characterized in that the sensor (111) comprises a radar sensor (111) which is designed to emit a first radar signal in the direction of the user's hand and which is configured to receive a second radar signal reflected by the user's hand in order to detect the hand movement (117) of the user by comparing the first radar signal with the second radar signal, the method comprising the following steps: detecting (201 ) a hand movement (117) of a user of the household appliance (100) by the sensor (111); Changing (203) an object property of the object (115) displayed on the display element (109) in response to the detected hand movement (117) of the user; and changing (205) an operating parameter of the household appliance (100) in response to the detected hand movement (117) of the user.

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