EP3643215B1 - Vacuum cleaner and method and device for detecting a motor driven brush type for a vacuum cleaner, method and device for operating a vacuum cleaner, motor-driven brush for a vacuum cleaner - Google Patents

Vacuum cleaner and method and device for detecting a motor driven brush type for a vacuum cleaner, method and device for operating a vacuum cleaner, motor-driven brush for a vacuum cleaner Download PDF

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Publication number
EP3643215B1
EP3643215B1 EP19199501.8A EP19199501A EP3643215B1 EP 3643215 B1 EP3643215 B1 EP 3643215B1 EP 19199501 A EP19199501 A EP 19199501A EP 3643215 B1 EP3643215 B1 EP 3643215B1
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EP
European Patent Office
Prior art keywords
brush
vacuum cleaner
signal
motor
characteristic
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EP19199501.8A
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German (de)
French (fr)
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EP3643215A1 (en
Inventor
Tobias Rodehüser
Alexander Neufeld
Dennis Walfort
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Miele und Cie KG
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Miele und Cie KG
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2847—Surface treating elements

Definitions

  • Method and device for recognizing a type of motor-driven brush for a vacuum cleaner method and device for operating a vacuum cleaner, motor-driven brush for a vacuum cleaner and vacuum cleaner
  • the invention relates to a method and an apparatus for recognizing a type of a motor-driven brush for a vacuum cleaner, a method and an apparatus for operating a vacuum cleaner having a motor-driven brush, a motor-driven brush for a vacuum cleaner and a vacuum cleaner.
  • a vacuum cleaner may have one or more motorized brushes.
  • the brush can be designed to operate on a specific surface, for example a hard floor, a carpet or upholstered furniture. To operate the brush, it can be detected whether the brush is connected to the vacuum cleaner.
  • the DE 28 14 729 A1 discloses a vacuum cleaner with automatic nozzle recognition, with a nozzle-specific control element arranged in the nozzle being set up to control the speed of the vacuum cleaner fan.
  • the U.S. 2007/0157418 A1 discloses a vacuum cleaner, wherein the vacuum cleaner is designed to identify which nozzle is connected to the vacuum cleaner via the resistivity of a nozzle.
  • the object of the invention is an improved method and an improved device for identifying a type of motor-driven brush for a vacuum cleaner, an improved method and an improved device for operating a vacuum cleaner having a motor-driven brush, an improved motor-driven brush for a vacuum cleaner and an improved to create a vacuum cleaner.
  • this object is achieved by a method and a device for identifying a type of motor-driven brush for a vacuum cleaner, a method and a device for operating a vacuum cleaner having a motor-driven brush, a motor-driven brush for a vacuum cleaner and a vacuum cleaner with the steps or features of the main claims resolved.
  • a type of motor-driven brush can be identified in order to be able to set a brush control depending on the identified type. This is advantageous for influencing the cleaning result of the brush through the regulation.
  • the brush can have a motor and a have a signal modifier in series with the motor.
  • the type of brush can be identified by means of an electrical signal that is provided to the motor and forwarded to the signal modifier.
  • the inductance of the signal modifier can also increase electromagnetic compatibility of the brush and thus of the vacuum cleaner.
  • the approach described here can advantageously be implemented in a cost-effective manner.
  • a method for identifying a type of power brush for a vacuum cleaner is presented.
  • the brush has a first electrical contact, a second electrical contact and a series connection of at least one signal modifier and a motor connected between the first electrical contact and the second electrical contact.
  • the method has at least one step of providing, a step of reading in, a step of determining and a step of determining.
  • an excitation signal with an excitation characteristic is provided at an interface to the first contact.
  • a measurement signal is read in at an interface to the second contact.
  • a characteristic signal indicating a characteristic of the measurement signal is determined.
  • the type of brush is determined using the characteristic signal.
  • the vacuum cleaner can be, for example, a hand-held vacuum cleaner or a vacuum robot.
  • the vacuum cleaner can, for example, include a rechargeable energy store and be designed as a cordless vacuum cleaner.
  • the brush can be understood, for example, as a floor brush of the vacuum cleaner.
  • the motor can be a DC motor, such as a brushless DC motor or a PMDC motor.
  • the excitation signal can be an electrical signal.
  • the excitation characteristic can depict a voltage pulse, for example.
  • the measurement signal can also be an electrical signal.
  • the characteristic of the measurement signal can be a step response of the current, for example. Based on the characteristics of the measurement signal, the brush can be recognized and the type of brush can be assigned.
  • a coil or a circuit element can function as a signal modifier.
  • the signal modifier is designed to change a characteristic of the measurement signal.
  • the signal modifier is designed to modify an amplitude and/or a time constant of the measurement signal.
  • the type of brush in the determination step, can be determined using an allocation table and the characteristic signal.
  • the assignment table can show a relationship between different characteristics of the measurement signal and different types of brush.
  • different brushes with similar motors can thus be distinguished from one another and the type of brush can be reliably identified.
  • the excitation characteristic in the step of providing, can be a square-wave pulse.
  • the measurement signal can be read in as a step response of the square-wave pulse.
  • the square-wave pulse can be a voltage pulse, for example. Such a square-wave pulse is particularly suitable for effecting a meaningful step response.
  • the excitation characteristic can also be a triangular signal or a sinusoidal signal in the step of providing.
  • an amplitude can be determined as a characteristic of the measurement signal. Additionally or alternatively, a time profile of the measurement signal can be determined as a characteristic.
  • the brush can be recognized particularly easily in this way.
  • a detection signal in the step of determining, can be provided that represents the type of brush that has been determined.
  • the detection signal can be used to control the brush, for example to regulate a specific function of the brush or to set the power of the brush.
  • a method for operating a vacuum cleaner having a motor-driven brush has at least one implementation step and one providing step.
  • the steps of an embodiment of the above method are performed to identify a type of power brush for the vacuum cleaner.
  • the providing step the excitation signal having an operating characteristic for driving the motor of the brush using the type of motor-driven brush is provided to the interface to the first contact.
  • the brush can thus be operated by means of the vacuum cleaner, wherein the vacuum cleaner can be operated taking into account the recognized brush, for example in order to adjust the power of the motor or the brush depending on the type of brush. This is advantageous in adjusting cleaning performance of the brush according to the type of brush, which is advantageous in terms of cleaning performance of the vacuum cleaner.
  • the approach presented here also creates a device that is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding devices.
  • the object on which the invention is based can also be achieved quickly and efficiently by this embodiment variant of the invention in the form of a device.
  • the device can be designed to read in input signals and to determine and provide output signals using the input signals.
  • An input signal can represent, for example, a sensor signal that can be read in via an input interface of the device.
  • An output signal may represent a control signal or a data signal that may be provided at an output interface of the device.
  • the device can be designed to determine the output signals using a processing specification implemented in hardware or software.
  • the device can include a logic circuit, an integrated circuit or a software module for this purpose and can be implemented as a discrete component, for example, or can be comprised of a discrete component.
  • a motor-driven brush for a vacuum cleaner is also presented.
  • the brush has a first electrical contact, a second electrical contact, a series circuit connected between the first electrical contact and the second electrical contact with at least one coil or other circuit element as a signal modifier, and a motor for driving the brush.
  • a vacuum cleaner is presented with an embodiment of the motor-driven brush and with an embodiment of the above-mentioned device.
  • a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory, is also advantageous. If the program product or program is executed on a computer or a device, then the program product or program can be used to carry out, implement and/or control the steps of the method according to one of the embodiments described above.
  • figure 1 shows a schematic representation of a vacuum cleaner 100 with a motor-driven brush 105 and with a device 110 for detecting a type of motor-driven brush 105 for the vacuum cleaner 100 according to an embodiment.
  • the motor-driven brush 105 comprises a first electrical contact 115, a second electrical contact 120, and a series connection of at least one coil 125 and a motor 130, connected between the first electrical contact 115 and the second electrical contact 120, for driving the brush 105.
  • the device 110 comprises a provision device 135, a determination device 140 and a determination device 145.
  • the determination device 140 can also be designed as a measuring unit.
  • the provision device 140 is formed, an excitation signal 150 with a Provide excitation characteristics to an interface to the first contact 115.
  • the device 110 is designed to read in a measurement signal 155 at an interface to the second contact 120 .
  • Determination device 140 is designed to determine a characteristic signal 160 indicating a characteristic of measurement signal 155 .
  • Determination device 145 is designed to determine the type of brush 105 using characteristic signal 160 .
  • determination device 145 is designed to determine the type of brush 105 using an assignment table and characteristic signal 160 .
  • the assignment table depicts a connection between different characteristics of the measurement signal 155 and different types of the brush 105 .
  • the excitation characteristic of the excitation signal 150 is a square-wave pulse.
  • a square-wave pulse is exemplified in figure 3 shown.
  • device 110 is designed to read in measurement signal 155 as a step response of the square-wave pulse.
  • a step response is exemplified in figure 6 shown.
  • the determination device 140 is also designed to determine an amplitude of the measurement signal 155 as the characteristic. Additionally or alternatively, determination device 140 is designed to determine a time profile of measurement signal 155 as the characteristic. For this purpose, the determination device 140 can be designed to carry out a suitable evaluation of the measurement signal 155 .
  • the determination device 145 is designed to provide a detection signal 165 that represents the type of brush 105 determined.
  • the device 110 is also designed to operate the vacuum cleaner 100 having the motor-driven brush 105 .
  • the type of motor-driven brush 105 is first identified.
  • the recognition signal 165 representing the determined type of brush 105 is provided to the provision device 135 according to the exemplary embodiment shown here.
  • the providing device 135 is designed to provide the excitation signal 150 with an operating characteristic for operating the motor 120 of the brush 105 at the interface to the first contact 115 using the type of motor-driven brush 105 .
  • the operating characteristic defines, for example, a course of an operating voltage for operating motor 120.
  • the device 110 it is possible to recognize different motor-driven brushes 105 on a vacuum cleaner 100 . This is advantageous in order to achieve a good cleaning result by controlling the brush 105 .
  • the different brushes 105 are recognized by the device 110 and can thus be distinguished from the vacuum cleaner 100 in order to switch a control parameter or an entire control structure according to the type of brush 105 .
  • the series connection with the coil 125 this is possible even if the motors 130 of the different brushes 105 are similar in terms of structure and parameters.
  • the advantage of using a series inductance by means of the series connection of the motor 130 and the coil 125 is that only one additional component in the form of the coil 125 is used to realize the detection of the brush 105, which is also passive. When the brush 105 is in operation, only the ohmic resistance of the inductance acts, so that the losses are kept low. If the vacuum cleaner 100 uses several different types of brush 105, it is possible to build in the additional inductance in brushes 105 that are not standard or rarely used, e.g. in an upholstery brush to keep the losses and costs low with the standard brush. In addition, the inductance of the coil 125 can contribute to interference suppression with regard to electromagnetic compatibility of the brush 105 and thus of the vacuum cleaner 100 . Advantageously, additional components such as expensive ferrites for reducing interference are then not required.
  • FIG figure 2 shows a circuit diagram of a vacuum cleaner 100 according to an embodiment.
  • the vacuum cleaner 100 of the circuit diagram shown here is similar to or corresponds to that based on FIG figure 1 described vacuum cleaner.
  • the vacuum cleaner 100 includes the determination device 140, which is designed here as a shunt for current measurement.
  • the vacuum cleaner includes a battery 205, for example a rechargeable battery, an intermediate circuit capacitor 210, a first switch 215 and a second switch 220.
  • the first switch 215 and the second switch 220 are embodied here by way of example as metal-oxide-semiconductor field-effect transistors, as MOSFETs in power electronics.
  • the battery 205 has a first connection, in this case the positive pole, for example, which is connected to a first connection of the intermediate circuit capacitor 210 and to a first connection of the first switch 215 .
  • a second connection of the first switch 215 is connected to a first connection of the second switch 220 .
  • the second terminal of the first switch 215 is connected to a first terminal of the motor 130 and a second terminal of the motor is connected to a first terminal of the coil 125 .
  • a second connection of coil 125 is connected to a first connection of the shunt of determination device 140, and a second connection of the shunt of determination device 140 is connected to a second connection of second switch 220, a second connection of intermediate circuit capacitor 210 and to a second connection of the battery 205, the negative pole.
  • the excitation signal is first provided as an electrical signal for detecting a type of brush and then as an electrical signal for driving the motor 130 by means of the battery 205 and a suitable control of the switches 215 , 220 . If the excitation signal is provided as an electrical signal for detecting the type of brush, the measurement signal is detected using the determination device 140 and provided.
  • figure 3 15 shows a characteristic curve of an excitation signal 150 for detecting a type of a motor-driven brush for a vacuum cleaner according to an embodiment.
  • the characteristic shows an example of an excitation characteristic of the excitation signal 150.
  • the excitation characteristic is shown here as a square-wave pulse and depicts a voltage pulse. According to one exemplary embodiment, the excitation signal 150 is not suitable for driving the motor of the brush due to the excitation characteristic.
  • figure 4 15 shows a characteristic curve of a measurement signal 155 for detecting a type of motor-driven brush for a vacuum cleaner according to an embodiment.
  • a characteristic of the measurement signal 155 is shown as an example, which is determined by the in figure 3 shown excitation signal is effected.
  • the characteristic shown here is an example of the measurement signal 155 as an electrical signal when the brush is motor-driven but has no coil.
  • the measurement signal 150 has a steep rise up to a first amplitude and then a flatter fall.
  • figure 5 shows accordingly figure 4 a further characteristic curve of a measurement signal 155 for detecting a further type of motor-driven brush for a vacuum cleaner according to FIG an embodiment.
  • the characteristics of the measurement signal 155 shown here are similar to those mentioned above figure 4 characteristic shown, since the characteristic for the measurement signal 155 as an electrical signal of a motor-driven brush without a coil with a very similar motor to the brush in the previous figure is shown here by way of example.
  • the measurement signal 150 also has a steep rise up to a second amplitude and then a flatter fall. The second amplitude is slightly larger than the first amplitude of the in figure 4 shown measurement signal.
  • figure 6 15 shows a characteristic curve of a measurement signal 155 for detecting a type of motor-driven brush for a vacuum cleaner according to an embodiment.
  • a characteristic of the measurement signal 155 is shown as an example as an electrical signal for the motor-driven brush with additional inductance, ie for the series connection of the motor and the coil.
  • the characteristic of the measurement signal 155 shown here differs significantly from that in FIGS figures 4 and 5 characteristics shown, since the coil causes a change in characteristics that is advantageous for identifying the type of brush.
  • the measurement signal 150 has a characteristic as compared to that in FIGS figures 4 and 5 Characteristics shown a somewhat flatter increase up to a third amplitude, which is exemplary only about a quarter of the size of the amplitudes in the figures 4 and 5 characteristics shown. Then the characteristic shows a very elongated flat drop. For example, the drop extends over a period of time that is about four times as long as the corresponding periods of time in figures 4 and 5 characteristics shown.
  • figure 7 7 shows a flowchart of a method 700 for identifying a type of power brush for a vacuum cleaner according to an embodiment.
  • the brush comprises a first electrical contact, a second electrical contact, and a series connection of at least one coil and a motor connected between the first electrical contact and the second electrical contact.
  • the method 700 has a step 705 of providing, a step 710 of reading in, a step 715 of determining and a step 720 of determining.
  • an excitation signal with an excitation characteristic is provided at an interface to the first contact.
  • a measurement signal is read in at an interface to the second contact.
  • a characteristic signal indicating a characteristic of the measurement signal is obtained definitely.
  • the type of brush is determined using the characteristic signal.
  • figure 8 8 shows a flow chart of a method 800 for operating a vacuum cleaner having a motor-driven brush according to an embodiment.
  • the method 800 has at least one step 805 of performing and one step 810 of providing.
  • step 805 the steps of an embodiment of the above method for identifying a type of power brush for a vacuum cleaner are performed.
  • step 810 of providing, using the type of motor-driven brush the excitation signal having an operating characteristic for driving the motor of the brush is provided to the interface to the first contact.
  • an embodiment includes an "and/or" link between a first feature and a second feature, this should be read in such a way that the embodiment according to one embodiment includes both the first feature and the second feature and according to a further embodiment either only that having the first feature or only the second feature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Description

Verfahren und Vorrichtung zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger, Verfahren und Vorrichtung zum Betreiben eines Staubsaugers, motorbetriebene Bürste für einen Staubsauger und StaubsaugerMethod and device for recognizing a type of motor-driven brush for a vacuum cleaner, method and device for operating a vacuum cleaner, motor-driven brush for a vacuum cleaner and vacuum cleaner

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger, ein Verfahren und eine Vorrichtung zum Betreiben eines eine motorbetriebene Bürste aufweisenden Staubsaugers, eine motorbetriebene Bürste für einen Staubsauger und einen Staubsauger.The invention relates to a method and an apparatus for recognizing a type of a motor-driven brush for a vacuum cleaner, a method and an apparatus for operating a vacuum cleaner having a motor-driven brush, a motor-driven brush for a vacuum cleaner and a vacuum cleaner.

Ein Staubsauger kann eine oder mehrere motorbetriebene Bürsten aufweisen. Die Bürste kann für einen Betrieb auf einem bestimmten Untergrund ausgelegt sein, beispielsweise für einen Hartboden, einen Teppich oder für ein Polstermöbel. Zum Betreiben der Bürste kann erkannt werden, ob die Bürste mit dem Staubsauger verbunden ist.A vacuum cleaner may have one or more motorized brushes. The brush can be designed to operate on a specific surface, for example a hard floor, a carpet or upholstered furniture. To operate the brush, it can be detected whether the brush is connected to the vacuum cleaner.

Die DE 28 14 729 A1 offenbart einen Staubsauger mit einer automatischen Düsenerkennung, wobei ein in der Düse angeordnetes düsenspezifisches Steuerelement zur Drehzahlsteuerung des Staubsauger-Gebläses eingerichtet ist. Die US 2007 / 0157418 A1 offenbart einen Staubsauger, wobei der Staubsauger dazu ausgebildet ist, über den spezifischen Widerstand einer Düse zu erkennen, welche Düse mit dem Staubsauger verbunden ist.the DE 28 14 729 A1 discloses a vacuum cleaner with automatic nozzle recognition, with a nozzle-specific control element arranged in the nozzle being set up to control the speed of the vacuum cleaner fan. the U.S. 2007/0157418 A1 discloses a vacuum cleaner, wherein the vacuum cleaner is designed to identify which nozzle is connected to the vacuum cleaner via the resistivity of a nozzle.

Der Erfindung stellt sich die Aufgabe ein verbessertes Verfahren und eine verbesserte Vorrichtung zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger, ein verbessertes Verfahren und eine verbesserte Vorrichtung zum Betreiben eines eine motorbetriebene Bürste aufweisenden Staubsaugers, eine verbessertes motorbetriebene Bürste für einen Staubsauger und einen verbesserten Staubsauger zu schaffen.The object of the invention is an improved method and an improved device for identifying a type of motor-driven brush for a vacuum cleaner, an improved method and an improved device for operating a vacuum cleaner having a motor-driven brush, an improved motor-driven brush for a vacuum cleaner and an improved to create a vacuum cleaner.

Erfindungsgemäß wird diese Aufgabe durch ein Verfahren und eine Vorrichtung zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger, ein Verfahren und eine Vorrichtung zum Betreiben eines eine motorbetriebene Bürste aufweisenden Staubsaugers, eine motorbetriebene Bürste für einen Staubsauger sowie einen Staubsauger mit den Schritten bzw. Merkmalen der Hauptansprüche gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this object is achieved by a method and a device for identifying a type of motor-driven brush for a vacuum cleaner, a method and a device for operating a vacuum cleaner having a motor-driven brush, a motor-driven brush for a vacuum cleaner and a vacuum cleaner with the steps or features of the main claims resolved. Advantageous refinements and developments of the invention result from the following dependent claims.

Die mit der Erfindung erreichbaren Vorteile bestehen darin, dass ein Typ einer motorbetriebenen Bürste erkannt werden kann, um eine Regelung der Bürste je nach erkanntem Typ einstellen zu können. Dies ist vorteilhaft, um durch die Regelung das Reinigungsergebnis der Bürste zu beeinflussen. Dazu kann die Bürste einen Motor und eine mit dem Motor in Reihe geschalteten Signalmodifikator aufweisen. Mittels eines elektrischen Signals, das an den Motor bereitgestellt und an den Signalmodifikator weitergeleitet wird, kann der Typ der Bürste identifiziert werden. Vorteilhafterweise kann die Induktivität des Signalmodifikators zudem eine elektromagnetische Verträglichkeit der Bürste und damit des Staubsaugers steigern. Zudem kann der hier beschriebene Ansatz vorteilhafterweise kostengünstig realisiert werden.The advantages that can be achieved with the invention are that a type of motor-driven brush can be identified in order to be able to set a brush control depending on the identified type. This is advantageous for influencing the cleaning result of the brush through the regulation. For this purpose, the brush can have a motor and a have a signal modifier in series with the motor. The type of brush can be identified by means of an electrical signal that is provided to the motor and forwarded to the signal modifier. Advantageously, the inductance of the signal modifier can also increase electromagnetic compatibility of the brush and thus of the vacuum cleaner. In addition, the approach described here can advantageously be implemented in a cost-effective manner.

Auch wenn der beschriebene Ansatz anhand eines Haushaltgeräts beschrieben wird, kann der hier beschriebene Ansatz entsprechend im Zusammenhang mit einem gewerblichen oder professionellen Gerät, wie einem Reinigungs- oder Desinfektionsgerät eingesetzt werden.Even if the approach described is described using a household appliance, the approach described here can be used accordingly in connection with a commercial or professional appliance, such as a cleaning or disinfection appliance.

Es wird ein Verfahren zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger vorgestellt. Die Bürste weist einen ersten elektrischen Kontakt, einen zweiten elektrischen Kontakt und eine zwischen dem ersten elektrischen Kontakt und dem zweiten elektrischen Kontakt geschaltete Reihenschaltung aus zumindest einem Signalmodifikator und einem Motor auf. Das Verfahren weist zumindest einen Schritt des Bereitstellens, einen Schritt des Einlesens, einen Schritt des Bestimmens und einen Schritt des Ermittelns auf. Im Schritt des Bereitstellens wird ein Anregungssignal mit einer Anregungscharakteristik an eine Schnittstelle zu dem ersten Kontakt bereitgestellt. Im Schritt des Einlesens wird ein Messsignal an einer Schnittstelle zu dem zweiten Kontakt eingelesen. Im Schritt des Bestimmens wird ein eine Charakteristik des Messsignals anzeigendes Charakteristiksignal bestimmt. Im Schritt des Ermittelns wird der Typ der Bürste unter Verwendung des Charakteristiksignals ermittelt.A method for identifying a type of power brush for a vacuum cleaner is presented. The brush has a first electrical contact, a second electrical contact and a series connection of at least one signal modifier and a motor connected between the first electrical contact and the second electrical contact. The method has at least one step of providing, a step of reading in, a step of determining and a step of determining. In the providing step, an excitation signal with an excitation characteristic is provided at an interface to the first contact. In the reading step, a measurement signal is read in at an interface to the second contact. In the determination step, a characteristic signal indicating a characteristic of the measurement signal is determined. In the determination step, the type of brush is determined using the characteristic signal.

Bei dem Staubsauger kann es sich beispielsweise um einen Handstaubsauger oder um einen Saugroboter handeln. Der Staubsauger kann beispielsweise einen wieder aufladbaren Energiespeicher umfassen und als Akku-Staubsauger ausgeführt sein. Unter der Bürste kann beispielsweise eine Bodenbürste des Staubsaugers verstanden werden. Der Motor kann ein Gleichstrommotor sein, beispielsweise ein bürstenloser Gleichstrommotor oder ein PMDC Motor. Bei dem Anregungssignal kann es sich um ein elektrisches Signal handeln. Die Anregungscharakteristik kann beispielsweise einen Spannungspuls abbilden. Bei dem Messsignal kann es sich auch um ein elektrisches Signal handeln. Die Charakteristik des Messsignals kann beispielsweise eine Sprungantwort des Stroms sein. Anhand der Charakteristik des Messsignals kann die Bürste erkannt werden und der Typ der Bürste kann zugeordnet werden.The vacuum cleaner can be, for example, a hand-held vacuum cleaner or a vacuum robot. The vacuum cleaner can, for example, include a rechargeable energy store and be designed as a cordless vacuum cleaner. The brush can be understood, for example, as a floor brush of the vacuum cleaner. The motor can be a DC motor, such as a brushless DC motor or a PMDC motor. The excitation signal can be an electrical signal. The excitation characteristic can depict a voltage pulse, for example. The measurement signal can also be an electrical signal. The characteristic of the measurement signal can be a step response of the current, for example. Based on the characteristics of the measurement signal, the brush can be recognized and the type of brush can be assigned.

Gemäß einer Ausführungsform kann als Signalmodifikator eine Spule oder ein Schaltungselement fungieren. Der Signalmodifikator ist dazu ausgebildet, eine Charakteristik des Messsignals zu verändern. In einer Ausführungsform ist der Signalmodifikator dazu ausgebildet, eine Amplitude und/oder eine Zeitkonstante des Messsignals zu modifizieren.According to one embodiment, a coil or a circuit element can function as a signal modifier. The signal modifier is designed to change a characteristic of the measurement signal. In one embodiment, the signal modifier is designed to modify an amplitude and/or a time constant of the measurement signal.

Gemäß einer Ausführungsform kann im Schritt des Ermittelns der Typ der Bürste unter Verwendung einer Zuordnungstabelle und dem Charakteristiksignal ermittelt werden. Die Zuordnungstabelle kann einen Zusammenhang zwischen unterschiedlichen Charakteristika des Messsignals und unterschiedlichen Typen der Bürste abbilden. Vorteilhafterweise können somit unterschiedliche Bürsten mit ähnlichen Motoren voneinander unterschieden und der Typ der Bürste kann zuverlässig erkannt werden.According to one embodiment, in the determination step, the type of brush can be determined using an allocation table and the characteristic signal. The assignment table can show a relationship between different characteristics of the measurement signal and different types of brush. Advantageously, different brushes with similar motors can thus be distinguished from one another and the type of brush can be reliably identified.

Zudem kann gemäß einer Ausführungsform im Schritt des Bereitstellens die Anregungscharakteristik ein Rechteckimpuls sein. Im Schritt des Einlesens kann das Messsignal als eine Sprungantwort des Rechteckimpulses eingelesen werden. Bei dem Rechteckimpuls kann es sich beispielsweise um einen Spannungspuls handeln. Ein solcher Rechteckimpuls eignet sich besonders zum Bewirken einer aussagekräftigen Sprungantwort. In alternativen Ausführungsformen des Verfahrens kann im Schritt des Bereitstellens die Anregungscharakteristik auch ein Dreiecksignal oder ein Sinussignal sein.In addition, according to one embodiment, in the step of providing, the excitation characteristic can be a square-wave pulse. In the reading step, the measurement signal can be read in as a step response of the square-wave pulse. The square-wave pulse can be a voltage pulse, for example. Such a square-wave pulse is particularly suitable for effecting a meaningful step response. In alternative embodiments of the method, the excitation characteristic can also be a triangular signal or a sinusoidal signal in the step of providing.

Im Schritt des Bestimmens kann eine Amplitude als Charakteristik des Messsignals bestimmt werden. Zusätzlich oder alternativ kann ein zeitlicher Verlauf des Messsignals als Charakteristik bestimmt werden. Vorteilhafterweise kann auf diese Weise die Bürste besonders einfach erkannt werden.In the determination step, an amplitude can be determined as a characteristic of the measurement signal. Additionally or alternatively, a time profile of the measurement signal can be determined as a characteristic. Advantageously, the brush can be recognized particularly easily in this way.

Außerdem kann im Schritt des Ermittelns gemäß einer Ausführungsform ein Erkennungssignal bereitgestellt werden, das den ermittelten Typ der Bürste repräsentiert. Vorteilhafterweise kann das Erkennungssignal zum Ansteuern der Bürste verwendet werden, beispielsweise um eine bestimmte Funktion der Bürste zu regeln oder eine Leistung der Bürste einzustellen.In addition, according to one embodiment, in the step of determining, a detection signal can be provided that represents the type of brush that has been determined. Advantageously, the detection signal can be used to control the brush, for example to regulate a specific function of the brush or to set the power of the brush.

Mit diesem Ansatz wird zudem ein Verfahren zum Betreiben eines eine motorbetriebene Bürste aufweisenden Staubsaugers vorgestellt. Das Verfahren weist zumindest einen Schritt des Durchführens und einen Schritt des Bereitstellens auf. Im Schritt des Durchführens werden die Schritte einer Ausführungsform des oben genannten Verfahrens durchgeführt, um einen Typs der motorbetriebenen Bürste für den Staubsauger zu erkennen. Im Schritt des Bereitstellens wird das Anregungssignal mit einer Betriebscharakteristik zum Betreiben des Motors der Bürste unter Verwendung des Typs der motorbetriebenen Bürste an die Schnittstelle zu dem ersten Kontakt bereitgestellt. Vorteilhafterweise kann die Bürste somit mittels des Staubsaugers betrieben werden, wobei das Betreiben des Staubsaugers unter Berücksichtigung der erkannten Bürste erfolgen kann, beispielsweise um je nach Typ der Bürste eine Leistung des Motors oder der Bürste einzustellen. Dies ist vorteilhaft um eine Reinigungsleistung der Bürste entsprechend dem Typ der Bürste anzupassen, was vorteilhaft in Bezug auf die Reinigungsleistung des Staubsaugers ist.With this approach, a method for operating a vacuum cleaner having a motor-driven brush is also presented. The method has at least one implementation step and one providing step. In the performing step, the steps of an embodiment of the above method are performed to identify a type of power brush for the vacuum cleaner. In the providing step, the excitation signal having an operating characteristic for driving the motor of the brush using the type of motor-driven brush is provided to the interface to the first contact. Advantageously, the brush can thus be operated by means of the vacuum cleaner, wherein the vacuum cleaner can be operated taking into account the recognized brush, for example in order to adjust the power of the motor or the brush depending on the type of brush. This is advantageous in adjusting cleaning performance of the brush according to the type of brush, which is advantageous in terms of cleaning performance of the vacuum cleaner.

Der hier vorgestellte Ansatz schafft ferner eine Vorrichtung, die ausgebildet ist, um die Schritte einer Variante eines hier vorgestellten Verfahrens in entsprechenden Einrichtungen durchzuführen, anzusteuern bzw. umzusetzen. Auch durch diese Ausführungsvariante der Erfindung in Form einer Vorrichtung kann die der Erfindung zugrunde liegende Aufgabe schnell und effizient gelöst werden.The approach presented here also creates a device that is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding devices. The object on which the invention is based can also be achieved quickly and efficiently by this embodiment variant of the invention in the form of a device.

Die Vorrichtung kann ausgebildet sein, um Eingangssignale einzulesen und unter Verwendung der Eingangssignale Ausgangssignale zu bestimmen und bereitzustellen. Ein Eingangssignal kann beispielsweise ein über eine Eingangsschnittstelle der Vorrichtung einlesbares Sensorsignal darstellen. Ein Ausgangssignal kann ein Steuersignal oder ein Datensignal darstellen, das an einer Ausgangsschnittstelle der Vorrichtung bereitgestellt werden kann. Die Vorrichtung kann ausgebildet sein, um die Ausgangssignale unter Verwendung einer in Hardware oder Software umgesetzten Verarbeitungsvorschrift zu bestimmen. Beispielsweise kann die Vorrichtung dazu eine Logikschaltung, einen integrierten Schaltkreis oder ein Softwaremodul umfassen und beispielsweise als ein diskretes Bauelement realisiert sein oder von einem diskreten Bauelement umfasst sein.The device can be designed to read in input signals and to determine and provide output signals using the input signals. An input signal can represent, for example, a sensor signal that can be read in via an input interface of the device. An output signal may represent a control signal or a data signal that may be provided at an output interface of the device. The device can be designed to determine the output signals using a processing specification implemented in hardware or software. For example, the device can include a logic circuit, an integrated circuit or a software module for this purpose and can be implemented as a discrete component, for example, or can be comprised of a discrete component.

Es wird zudem eine motorbetriebene Bürste für einen Staubsauger vorgestellt. Die Bürste weist einen ersten elektrischen Kontakt, einem zweiten elektrischen Kontakt, eine zwischen dem ersten elektrischen Kontakt und dem zweiten elektrischen Kontakt geschaltete Reihenschaltung mit zumindest einer Spule oder andere Schaltungselemente als Signalmodifikatior und einem Motor zum Antreiben der Bürste auf.A motor-driven brush for a vacuum cleaner is also presented. The brush has a first electrical contact, a second electrical contact, a series circuit connected between the first electrical contact and the second electrical contact with at least one coil or other circuit element as a signal modifier, and a motor for driving the brush.

Zudem wird ein Staubsauger mit einer Ausführungsform der motorbetriebenen Bürste und mit einer Ausführungsform der vorstehend genannten Vorrichtung vorgestellt.In addition, a vacuum cleaner is presented with an embodiment of the motor-driven brush and with an embodiment of the above-mentioned device.

Von Vorteil ist auch ein Computer-Programmprodukt oder Computerprogramm mit Programmcode, der auf einem maschinenlesbaren Träger oder Speichermedium wie einem Halbleiterspeicher, einem Festplattenspeicher oder einem optischen Speicher gespeichert sein kann. Wird das Programmprodukt oder Programm auf einem Computer oder einer Vorrichtung ausgeführt, so kann das Programmprodukt oder Programm zur Durchführung, Umsetzung und/oder Ansteuerung der Schritte des Verfahrens nach einer der vorstehend beschriebenen Ausführungsformen verwendet werden.A computer program product or computer program with program code, which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory, is also advantageous. If the program product or program is executed on a computer or a device, then the program product or program can be used to carry out, implement and/or control the steps of the method according to one of the embodiments described above.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt

Figur 1
eine schematische Darstellung eines Staubsaugers mit einer motorbetriebenen Bürste und mit einer Vorrichtung zum Erkennen eines Typs einer motorbetriebenen Bürste für den Staubsauger gemäß einem Ausführungsbeispiel;
Figur 2
ein Schaltbild eines Staubsaugers gemäß einem Ausführungsbeispiel;
Figur 3
eine Kennlinie eines Anregungssignals zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel;
Figur 4
eine Kennlinie eines Messsignals zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel;
Figur 5
eine Kennlinie eines Messsignals zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel;
Figur 6
eine Kennlinie eines Messsignals zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel
Figur 7
ein Ablaufdiagramm eines Verfahrens zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel; und
Figur 8
ein Ablaufdiagramm eines Verfahrens zum Betreiben eines eine motorbetriebene Bürste aufweisenden Staubsaugers gemäß einem Ausführungsbeispiel.
An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows
figure 1
a schematic representation of a vacuum cleaner with a motor-driven brush and with a device for detecting a type of one motor-driven brush for the vacuum cleaner according to an embodiment;
figure 2
a circuit diagram of a vacuum cleaner according to an embodiment;
figure 3
a characteristic curve of an excitation signal for detecting a type of a motor-driven brush for a vacuum cleaner according to an embodiment;
figure 4
a characteristic curve of a measurement signal for detecting a type of motor-driven brush for a vacuum cleaner according to an embodiment;
figure 5
a characteristic curve of a measurement signal for detecting a type of motor-driven brush for a vacuum cleaner according to an embodiment;
figure 6
a characteristic curve of a measurement signal for detecting a type of motor-driven brush for a vacuum cleaner according to an embodiment
figure 7
12 is a flow chart of a method for identifying a type of motorized brush for a vacuum cleaner according to an embodiment; and
figure 8
a flowchart of a method for operating a vacuum cleaner having a motor-driven brush according to an embodiment.

In der nachfolgenden Beschreibung günstiger Ausführungsbeispiele des vorliegenden Ansatzes werden für die in den verschiedenen Figuren dargestellten und ähnlich wirkenden Elemente gleiche oder ähnliche Bezugszeichen verwendet, wobei auf eine wiederholte Beschreibung dieser Elemente verzichtet wird.In the following description of favorable exemplary embodiments of the present approach, the same or similar reference symbols are used for the elements which are shown in the various figures and have a similar effect, with a repeated description of these elements being dispensed with.

Figur 1 zeigt eine schematische Darstellung eines Staubsaugers 100 mit einer motorbetriebenen Bürste 105 und mit einer Vorrichtung 110 zum Erkennen eines Typs einer motorbetriebenen Bürste 105 für den Staubsauger 100 gemäß einem Ausführungsbeispiel. figure 1 shows a schematic representation of a vacuum cleaner 100 with a motor-driven brush 105 and with a device 110 for detecting a type of motor-driven brush 105 for the vacuum cleaner 100 according to an embodiment.

Die motorbetriebene Bürste 105 umfasst einen ersten elektrischen Kontakt 115, einen zweiten elektrischen Kontakt 120 und eine zwischen dem ersten elektrischen Kontakt 115 und dem zweiten elektrischen Kontakt 120 geschaltete Reihenschaltung aus zumindest einer Spule 125 und einem Motor 130 zum Antreiben der Bürste 105.The motor-driven brush 105 comprises a first electrical contact 115, a second electrical contact 120, and a series connection of at least one coil 125 and a motor 130, connected between the first electrical contact 115 and the second electrical contact 120, for driving the brush 105.

Die Vorrichtung 110 umfasst eine Bereitstellungseinrichtung 135, eine Bestimmungseinrichtung 140 und eine Ermittlungseinrichtung 145. Die Bestimmungseinrichtung 140 kann auch als Messeinheit ausgeführt sein. Die Bereitstellungseinrichtung 140 ist ausgebildet, ein Anregungssignal 150 mit einer Anregungscharakteristik an eine Schnittstelle zu dem ersten Kontakt 115 bereitzustellen. Die Vorrichtung 110 ist ausgebildet, an einer Schnittstelle zu dem zweiten Kontakt 120 ein Messsignal 155 einzulesen. Die Bestimmungseinrichtung 140 ist dazu ausgebildet, ein eine Charakteristik des Messsignals 155 anzeigenden Charakteristiksignal 160 zu bestimmen. Die Ermittlungseinrichtung 145 ist dazu ausgebildet, unter Verwendung des Charakteristiksignals 160 den Typ der Bürste 105 zu ermitteln.The device 110 comprises a provision device 135, a determination device 140 and a determination device 145. The determination device 140 can also be designed as a measuring unit. The provision device 140 is formed, an excitation signal 150 with a Provide excitation characteristics to an interface to the first contact 115. The device 110 is designed to read in a measurement signal 155 at an interface to the second contact 120 . Determination device 140 is designed to determine a characteristic signal 160 indicating a characteristic of measurement signal 155 . Determination device 145 is designed to determine the type of brush 105 using characteristic signal 160 .

Die Ermittlungseinrichtung 145 ist gemäß einem Ausführungsbeispiel dazu ausgebildet, den Typ der Bürste 105 unter Verwendung einer Zuordnungstabelle und dem Charakteristiksignal 160 zu ermitteln. Die Zuordnungstabelle bildet dabei einen Zusammenhang zwischen unterschiedlichen Charakteristika des Messsignals 155 und unterschiedlichen Typen der Bürste 105 ab.According to one exemplary embodiment, determination device 145 is designed to determine the type of brush 105 using an assignment table and characteristic signal 160 . The assignment table depicts a connection between different characteristics of the measurement signal 155 and different types of the brush 105 .

Zudem ist gemäß einem Ausführungsbeispiel die Anregungscharakteristik des Anregungssignals 150 ein Rechteckimpuls. Ein solcher Rechteckimpuls ist beispielhaft in Figur 3 dargestellt. In diesem Fall ist die Vorrichtung 110 ausgebildet, das Messsignal 155 als eine Sprungantwort des Rechteckimpulses einzulesen. Eine solche Sprungantwort ist beispielhaft in Figur 6 dargestellt.In addition, according to one embodiment, the excitation characteristic of the excitation signal 150 is a square-wave pulse. Such a square-wave pulse is exemplified in figure 3 shown. In this case, device 110 is designed to read in measurement signal 155 as a step response of the square-wave pulse. Such a step response is exemplified in figure 6 shown.

Auch ist die Bestimmungseinrichtung 140 gemäß einem Ausführungsbeispiel dazu ausgebildet, eine Amplitude des Messsignals 155 als die Charakteristik zu bestimmen. Zusätzlich oder alternativ ist die Bestimmungseinrichtung 140 dazu ausgebildet, einen zeitlichen Verlauf des Messsignals 155 als die Charakteristik zu bestimmen. Dazu kann die Bestimmungseinrichtung 140 ausgebildet sein, um eine geeignete Auswertung des Messsignals 155 durchzuführen.According to one exemplary embodiment, the determination device 140 is also designed to determine an amplitude of the measurement signal 155 as the characteristic. Additionally or alternatively, determination device 140 is designed to determine a time profile of measurement signal 155 as the characteristic. For this purpose, the determination device 140 can be designed to carry out a suitable evaluation of the measurement signal 155 .

Gemäß dem hier gezeigten Ausführungsbeispiel ist die Ermittlungseinrichtung 145 dazu ausgebildet, ein Erkennungssignal 165 bereitzustellen, das den ermittelten Typ der Bürste 105 repräsentiert.According to the exemplary embodiment shown here, the determination device 145 is designed to provide a detection signal 165 that represents the type of brush 105 determined.

Die Vorrichtung 110 ist gemäß dem hier gezeigten Ausführungsbeispiel zudem zum Betreiben des die motorbetriebene Bürste 105 aufweisenden Staubsaugers 100 ausgebildet. Dazu wird zuerst der Typ der motorbetriebene Bürste 105 erkannt. Das den ermittelten Typ der Bürste 105 repräsentierende Erkennungssignal 165 wird gemäß dem hier gezeigten Ausführungsbeispiel an die Bereitstellungseinrichtung 135 bereitgestellt. Die Bereitstellungseinrichtung 135 ist in diesem Fall dazu ausgebildet, unter Verwendung des Typs der motorbetriebenen Bürste 105 das Anregungssignal 150 mit einer Betriebscharakteristik zum Betreiben des Motors 120 der Bürste 105 an die Schnittstelle zu dem ersten Kontakt 115 bereitzustellen. Die Betriebscharakteristik definiert beispielsweise einen Verlauf einer Betriebsspannung zum Betreiben des Motors 120.According to the exemplary embodiment shown here, the device 110 is also designed to operate the vacuum cleaner 100 having the motor-driven brush 105 . To do this, the type of motor-driven brush 105 is first identified. The recognition signal 165 representing the determined type of brush 105 is provided to the provision device 135 according to the exemplary embodiment shown here. In this case, the providing device 135 is designed to provide the excitation signal 150 with an operating characteristic for operating the motor 120 of the brush 105 at the interface to the first contact 115 using the type of motor-driven brush 105 . The operating characteristic defines, for example, a course of an operating voltage for operating motor 120.

Unter Verwendung eines Ausführungsbeispiels der hier gezeigten Vorrichtung 110 ist es möglich, unterschiedliche motorbetriebene Bürsten 105 bei einem Staubsauger 100 zu erkennen. Dies ist vorteilhaft, um durch eine Regelung der Bürste 105 ein gutes Reinigungsergebnis zu erreichen. Die unterschiedlichen Bürsten 105 werden mittels der Vorrichtung 110 erkannt und sind damit vom Staubsauger 100 unterscheidbar, um ein Regelungsparameter oder eine gesamte Regelungsstruktur entsprechend des Typs der Bürste 105 umzuschalten. Durch die Verwendung der Reihenschaltung mit der Spule 125 ist dies möglich, auch wenn die Motoren 130 der unterschiedlichen Bürsten 105 vom Aufbau und den Parametern her ähnlich sind.Using an exemplary embodiment of the device 110 shown here, it is possible to recognize different motor-driven brushes 105 on a vacuum cleaner 100 . This is advantageous in order to achieve a good cleaning result by controlling the brush 105 . The different brushes 105 are recognized by the device 110 and can thus be distinguished from the vacuum cleaner 100 in order to switch a control parameter or an entire control structure according to the type of brush 105 . By using the series connection with the coil 125, this is possible even if the motors 130 of the different brushes 105 are similar in terms of structure and parameters.

Durch einen kurzen Puls auf Bodenbürstenkontakte der Bürste 105 und ein Messen des Stroms beispielsweise mittels der Bestimmungseinrichtung 145 wird optional vor einem Ansteuern der Bürste 105 detektiert, ob die Bürste mit dem Staubsauger 100 verbunden ist. Durch die Reihenschaltung des Motors 130 mit der Spule 125 ist es möglich, die Anregungscharakteristik des Anregungssignals 150 von einem Spannungspuls auf eine Sprungantwort des Stroms zu verändern. Durch eine Messung des Stroms mittels der Bestimmungseinrichtung 145 ist es möglich, unterschiedliche Bürsten 105 zu erkennen. Dabei wird mittels der Bestimmungseinrichtung 140 optional die Höhe des Stroms bei der Sprungantwort ausgewertet, und zusätzlich oder alternativ der zeitliche Verlauf der Sprungantwort. Der Vorteil bei der Verwendung einer Reiheninduktivität mittels der Reihenschaltung des Motors 130 und der Spule 125 liegt darin, dass zum Realisieren des Erkennens der Bürste 105 nur ein zusätzliches Bauteil in Form der Spule 125 eingesetzt wird, das zudem passiv ist. Im laufenden Betrieb der Bürste 105 wirkt nur der ohmsche Widerstand der Induktivität, so dass die Verluste gering gehalten werden. Bei einer Verwendung des Staubsaugers 100 mehrerer unterschiedlicher Typen der Bürste 105 ist es möglich, die zusätzliche Induktivität in Bürsten 105 einzubauen, die nicht standardmäßig oder selten zum Einsatz kommen, z.B. in eine Polsterbürste um die Verluste und die Kosten bei der Standardbürste gering zu halten. Außerdem kann die Induktivität der Spule 125 zur Entstörung in Bezug auf eine elektromagnetische Verträglichkeit der Bürste 105 und damit des Staubsaugers 100 beitragen. Zusätzliche Bauelemente wie beispielsweise kostenintensive Ferrite zur Störungsreduzierung sind dann vorteilhafterweise nicht erforderlich.By means of a short pulse on floor brush contacts of the brush 105 and a measurement of the current, for example by means of the determination device 145, it is optionally detected before the brush 105 is activated whether the brush is connected to the vacuum cleaner 100. By connecting the motor 130 in series with the coil 125, it is possible to change the excitation characteristic of the excitation signal 150 from a voltage pulse to a step response of the current. By measuring the current using the determination device 145, it is possible to identify different brushes 105. In this case, the level of the current in the step response is optionally evaluated by means of the determination device 140, and additionally or alternatively the time profile of the step response. The advantage of using a series inductance by means of the series connection of the motor 130 and the coil 125 is that only one additional component in the form of the coil 125 is used to realize the detection of the brush 105, which is also passive. When the brush 105 is in operation, only the ohmic resistance of the inductance acts, so that the losses are kept low. If the vacuum cleaner 100 uses several different types of brush 105, it is possible to build in the additional inductance in brushes 105 that are not standard or rarely used, e.g. in an upholstery brush to keep the losses and costs low with the standard brush. In addition, the inductance of the coil 125 can contribute to interference suppression with regard to electromagnetic compatibility of the brush 105 and thus of the vacuum cleaner 100 . Advantageously, additional components such as expensive ferrites for reducing interference are then not required.

Figur 2 zeigt ein Schaltbild eines Staubsaugers 100 gemäß einem Ausführungsbeispiel. Der Staubsauger 100 des hier gezeigten Schaltbildes ähnelt oder entspricht dem anhand von Figur 1 beschriebenen Staubsauger. Der Staubsauger 100 umfasst neben der Bürste mit dem Motor 130 und der Spule 125 die Bestimmungseinrichtung 140, die hier als Shunt zur Strommessung ausgeführt ist. Zudem umfasst der Staubsauger eine Batterie 205, beispielsweise einen Akku, einen Zwischenkreiskondensator 210, einen ersten Schalter 215 und einen zweiten Schalter 220. Der erste Schalter 215 und der zweite Schalter 220 sind hier beispielhaft als Metall-Oxid-Halbleiter-Feldeffekttransistoren, als MOSFETs einer Leistungselektronik, ausgeführt. figure 2 shows a circuit diagram of a vacuum cleaner 100 according to an embodiment. The vacuum cleaner 100 of the circuit diagram shown here is similar to or corresponds to that based on FIG figure 1 described vacuum cleaner. In addition to the brush with the motor 130 and the coil 125, the vacuum cleaner 100 includes the determination device 140, which is designed here as a shunt for current measurement. In addition, the vacuum cleaner includes a battery 205, for example a rechargeable battery, an intermediate circuit capacitor 210, a first switch 215 and a second switch 220. The first switch 215 and the second switch 220 are embodied here by way of example as metal-oxide-semiconductor field-effect transistors, as MOSFETs in power electronics.

Die Batterie 205 weist einen ersten Anschluss auf, hier beispielhaft der Pluspol, der mit einem ersten Anschluss des Zwischenkreiskondensators 210 und mit einem ersten Anschluss des ersten Schalters 215 verbunden ist. Ein zweiter Anschluss des ersten Schalters 215 ist mit einem ersten Anschluss des zweiten Schalters 220 verbunden. Zudem ist der zweite Anschluss des ersten Schalters 215 mit einem ersten Anschluss des Motors 130 verbunden, und ein zweiter Anschluss des Motors ist mit einem ersten Anschluss der Spule 125 verbunden. Ein zweiter Anschluss der Spule 125 ist mit einem ersten Anschluss des Shunts der Bestimmungseinrichtung 140 verbunden, und ein zweiter Anschluss des Shunts der Bestimmungseinrichtung 140 ist mit einem zweiten Anschluss des zweiten Schalters 220, einem zweiten Anschluss des Zwischenkreiskondensators 210 und mit einem zweiten Anschluss der Batterie 205, dem Minuspol, verbunden.The battery 205 has a first connection, in this case the positive pole, for example, which is connected to a first connection of the intermediate circuit capacitor 210 and to a first connection of the first switch 215 . A second connection of the first switch 215 is connected to a first connection of the second switch 220 . In addition, the second terminal of the first switch 215 is connected to a first terminal of the motor 130 and a second terminal of the motor is connected to a first terminal of the coil 125 . A second connection of coil 125 is connected to a first connection of the shunt of determination device 140, and a second connection of the shunt of determination device 140 is connected to a second connection of second switch 220, a second connection of intermediate circuit capacitor 210 and to a second connection of the battery 205, the negative pole.

Gemäß einem Ausführungsbeispiel wird mittels der Batterie 205 und einer geeigneten Ansteuerung der Schalter 215, 220 das Anregungssignal zuerst als elektrisches Signal zum Erkennen eines Typs der Bürste und anschließen als elektrisches Signal zum Antreiben des Motors 130 bereitgestellt. Wenn das Anregungssignal als elektrisches Signal zum Erkennen des Typs der Bürste bereitgestellt wird, wird unter Verwendung der Bestimmungseinrichtung 140 das Messsignal erfasst und bereitgestellt.According to one embodiment, the excitation signal is first provided as an electrical signal for detecting a type of brush and then as an electrical signal for driving the motor 130 by means of the battery 205 and a suitable control of the switches 215 , 220 . If the excitation signal is provided as an electrical signal for detecting the type of brush, the measurement signal is detected using the determination device 140 and provided.

Figur 3 zeigt eine Kennlinie eines Anregungssignals 150 zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel. Die Kennlinie zeigt beispielhaft eine Anregungscharakteristik des Anregungssignals 150. Die Anregungscharakteristik ist hier als Rechteckimpuls gezeigt und bildet einen Spannungspuls ab. Das Anregungssignal 150 ist gemäß einem Ausführungsbeispiel aufgrund der Anregungscharakteristik nicht zum Antreiben des Motors der Bürste geeignet. figure 3 15 shows a characteristic curve of an excitation signal 150 for detecting a type of a motor-driven brush for a vacuum cleaner according to an embodiment. The characteristic shows an example of an excitation characteristic of the excitation signal 150. The excitation characteristic is shown here as a square-wave pulse and depicts a voltage pulse. According to one exemplary embodiment, the excitation signal 150 is not suitable for driving the motor of the brush due to the excitation characteristic.

Figur 4 zeigt eine Kennlinie eines Messsignals 155 zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel. Es ist beispielhaft eine Charakteristik des Messsignals 155 gezeigt, die durch das in Figur 3 gezeigte Anregungssignal bewirkt wird. Die hier gezeigte Charakteristik ist beispielhaft für das Messsignal 155 als elektrisches Signal, wenn die Bürste motorbetrieben ist, jedoch keine Spule aufweist. Als Charakteristik weist das Messsignal 150 einen steilen Anstieg bis zu einer ersten Amplitude und anschließend einen flacheren Abfall auf. figure 4 15 shows a characteristic curve of a measurement signal 155 for detecting a type of motor-driven brush for a vacuum cleaner according to an embodiment. A characteristic of the measurement signal 155 is shown as an example, which is determined by the in figure 3 shown excitation signal is effected. The characteristic shown here is an example of the measurement signal 155 as an electrical signal when the brush is motor-driven but has no coil. As a characteristic, the measurement signal 150 has a steep rise up to a first amplitude and then a flatter fall.

Figur 5 zeigt entsprechend zu Figur 4 eine weitere Kennlinie eines Messsignals 155 zum Erkennen eines weiteren Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel. Die Charakteristik des hier gezeigten Messsignals 155 ähnelt der in der vorstehend genannten Figur 4 gezeigten Charakteristik, da hier beispielhaft die Charakteristik für das Messsignal 155 als elektrisches Signal einer motorbetriebenen Bürste ohne Spule mit einem sehr ähnlichen Motor wie die Bürste der vorhergehenden Figur gezeigt ist. Als Charakteristik weist das Messsignal 150 ebenfalls einen steilen Anstieg bis zu einer zweiten Amplitude und anschließend einen flacheren Abfall auf. Die zweite Amplitude ist geringfügig größer als die erste Amplitude des in Figur 4 gezeigten Messsignals. figure 5 shows accordingly figure 4 a further characteristic curve of a measurement signal 155 for detecting a further type of motor-driven brush for a vacuum cleaner according to FIG an embodiment. The characteristics of the measurement signal 155 shown here are similar to those mentioned above figure 4 characteristic shown, since the characteristic for the measurement signal 155 as an electrical signal of a motor-driven brush without a coil with a very similar motor to the brush in the previous figure is shown here by way of example. As a characteristic, the measurement signal 150 also has a steep rise up to a second amplitude and then a flatter fall. The second amplitude is slightly larger than the first amplitude of the in figure 4 shown measurement signal.

Da die in den Figuren 4 und 5 gezeigten Charakteristika der Messsingale 155 annähernd gleich sind, ist es schwer die unterschiedlichen Typen der Bürste durch Auswertung der Charakteristika voneinander zu unterscheiden.Since the in the figures 4 and 5 Since the characteristics of the measurement signals 155 shown are approximately the same, it is difficult to distinguish the different types of brush from one another by evaluating the characteristics.

Figur 6 zeigt eine Kennlinie eines Messsignals 155 zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel. Es ist beispielhaft eine Charakteristik des Messsignals 155 als elektrisches Signal für die motorbetriebene Bürste mit zusätzlicher Induktivität gezeigt, also für die Reihenschaltung des Motors und der Spule. Die hier gezeigte Charakteristik des Messsignals 155 unterscheidet sich deutlich von den in den Figuren 4 und 5 gezeigten Charakteristika, da die Spule eine Veränderung der Charakteristik bewirkt, die für das Erkennen des Typs der Bürste vorteilhaft ist. Als Charakteristik weist das Messsignal 150 aufgrund der Spule einen im Vergleich zu den in den Figuren 4 und 5 gezeigten Charakteristika einen etwas flacheren Anstieg bis zu einer dritten Amplitude auf, die beispielhaft lediglich in etwa ein viertel der Größe der Amplituden der in den Figuren 4 und 5 gezeigten Charakteristika beträgt. Anschließend weist die Charakteristik einen sehr langgezogenen flachen Abfall auf. Beispielhaft zieht sich der Abfall über eine Zeitspanne hin, die in etwa viermal so lang ist, wie die entsprechenden Zeitspannen der in den Figuren 4 und 5 gezeigten Charakteristika. figure 6 15 shows a characteristic curve of a measurement signal 155 for detecting a type of motor-driven brush for a vacuum cleaner according to an embodiment. A characteristic of the measurement signal 155 is shown as an example as an electrical signal for the motor-driven brush with additional inductance, ie for the series connection of the motor and the coil. The characteristic of the measurement signal 155 shown here differs significantly from that in FIGS figures 4 and 5 characteristics shown, since the coil causes a change in characteristics that is advantageous for identifying the type of brush. Due to the coil, the measurement signal 150 has a characteristic as compared to that in FIGS figures 4 and 5 Characteristics shown a somewhat flatter increase up to a third amplitude, which is exemplary only about a quarter of the size of the amplitudes in the figures 4 and 5 characteristics shown. Then the characteristic shows a very elongated flat drop. For example, the drop extends over a period of time that is about four times as long as the corresponding periods of time in figures 4 and 5 characteristics shown.

Figur 7 zeigt ein Ablaufdiagramm eines Verfahrens 700 zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger gemäß einem Ausführungsbeispiel. Die Bürste umfasst einen ersten elektrischen Kontakt, einen zweiten elektrischen Kontakt und eine zwischen dem ersten elektrischen Kontakt und dem zweiten elektrischen Kontakt geschaltete Reihenschaltung aus zumindest einer Spule und einem Motor. Das Verfahren 700 weist einen Schritt 705 des Bereitstellens, einen Schritt 710 des Einlesens, einen Schritt 715 des Bestimmens und einen Schritt 720 des Ermittelns auf. Im Schritt 705 des Bereitstellens wird ein Anregungssignal mit einer Anregungscharakteristik an eine Schnittstelle zu dem ersten Kontakt bereitgestellt. Im Schritt 710 des Einlesens wird ein Messsignal an einer Schnittstelle zu dem zweiten Kontakt eingelesen. Im Schritt 715 des Bestimmens wird ein eine Charakteristik des Messsignals anzeigendes Charakteristiksignal bestimmt. Im Schritt 720 des Ermittelns wird der Typ der Bürste unter Verwendung des Charakteristiksignals ermittelt. figure 7 7 shows a flowchart of a method 700 for identifying a type of power brush for a vacuum cleaner according to an embodiment. The brush comprises a first electrical contact, a second electrical contact, and a series connection of at least one coil and a motor connected between the first electrical contact and the second electrical contact. The method 700 has a step 705 of providing, a step 710 of reading in, a step 715 of determining and a step 720 of determining. In step 705 of providing, an excitation signal with an excitation characteristic is provided at an interface to the first contact. In step 710 of reading in, a measurement signal is read in at an interface to the second contact. In step 715 of determining, a characteristic signal indicating a characteristic of the measurement signal is obtained definitely. In step 720 of determining, the type of brush is determined using the characteristic signal.

Figur 8 zeigt ein Ablaufdiagramm eines Verfahrens 800 zum Betreiben eines eine motorbetriebene Bürste aufweisenden Staubsaugers gemäß einem Ausführungsbeispiel. Das Verfahren 800 weist zumindest einen Schritt 805 des Durchführens und einen Schritt 810 des Bereitstellens auf. Im Schritt 805 des Durchführens werden die Schritte eines Ausführungsbeispiels des vorstehend genannten Verfahrens zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger ausgeführt. Im Schritt 810 des Bereitstellens wird unter Verwendung des Typs der motorbetriebenen Bürste das Anregungssignals mit einer Betriebscharakteristik zum Betreiben des Motors der Bürste an die Schnittstelle zu dem ersten Kontakt bereitgestellt. figure 8 8 shows a flow chart of a method 800 for operating a vacuum cleaner having a motor-driven brush according to an embodiment. The method 800 has at least one step 805 of performing and one step 810 of providing. In perform step 805, the steps of an embodiment of the above method for identifying a type of power brush for a vacuum cleaner are performed. In step 810 of providing, using the type of motor-driven brush, the excitation signal having an operating characteristic for driving the motor of the brush is provided to the interface to the first contact.

Umfasst ein Ausführungsbeispiel eine "und/oder"-Verknüpfung zwischen einem ersten Merkmal und einem zweiten Merkmal, so ist dies so zu lesen, dass das Ausführungsbeispiel gemäß einer Ausführungsform sowohl das erste Merkmal als auch das zweite Merkmal und gemäß einer weiteren Ausführungsform entweder nur das erste Merkmal oder nur das zweite Merkmal aufweist.If an embodiment includes an "and/or" link between a first feature and a second feature, this should be read in such a way that the embodiment according to one embodiment includes both the first feature and the second feature and according to a further embodiment either only that having the first feature or only the second feature.

Claims (6)

  1. Method (700) for identifying a type of a motor-driven brush (105) for a vacuum cleaner (100), the brush (105) having a first electrical contact (115), a second electrical contact (120), and a series circuit and/or parallel circuit, which consists of at least one signal modifier (125) and a motor (130), connected between the first electrical contact (115) and the second electrical contact (120), the method (700) having at least the following steps:
    providing (705) an excitation signal (150) having an excitation characteristic to an interface to the first contact (115);
    reading in (710) a measurement signal (155) at an interface to the second contact (120);
    determining (715) a characteristic signal (160) that indicates a characteristic of the measurement signal (155); and
    establishing (720) the type of the brush (105) using the characteristic signal (160),
    characterised in that
    an amplitude and/or a time curve of the measurement signal (155) is determined as the characteristic in the determining step (715).
  2. Method (700) according to claim 1, wherein a coil or a circuit element acts as the signal modifier (125).
  3. Method (700) according to either of the preceding claims, wherein, in the establishment step (720), the type of brush (105) is established using an associative array and the characteristic signal (160), wherein the associative array shows a connection between various characteristics of the measurement signal (155) and various types of brush (105).
  4. Method (700) according to any of the preceding claims, wherein, in the providing step (705), the excitation characteristic of the excitation signal (150) is a square pulse, and wherein, in the reading-in step (710), the measurement signal (155) is read in as a step response of the square pulse.
  5. Method (700) according to any of the preceding claims, wherein, in the establishment step (720), a identification signal (165) is provided which represents the established type of brush (105).
  6. Device (110) designed to carry out and/or actuate the steps of the method (700; 800) according to any of the preceding claims in corresponding units (135, 140, 145).
EP19199501.8A 2018-10-22 2019-09-25 Vacuum cleaner and method and device for detecting a motor driven brush type for a vacuum cleaner, method and device for operating a vacuum cleaner, motor-driven brush for a vacuum cleaner Active EP3643215B1 (en)

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