EP0917933B1 - Method for transferring data between a shaving apparatus and a cleaning device, and apparatus conceived accordingly - Google Patents

Method for transferring data between a shaving apparatus and a cleaning device, and apparatus conceived accordingly Download PDF

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Publication number
EP0917933B1
EP0917933B1 EP98114442A EP98114442A EP0917933B1 EP 0917933 B1 EP0917933 B1 EP 0917933B1 EP 98114442 A EP98114442 A EP 98114442A EP 98114442 A EP98114442 A EP 98114442A EP 0917933 B1 EP0917933 B1 EP 0917933B1
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EP
European Patent Office
Prior art keywords
signal
shaving apparatus
cleaning device
soiling
evaluation unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98114442A
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German (de)
French (fr)
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EP0917933A3 (en
EP0917933A2 (en
Inventor
Frank Dr. Beerwerth
Wolfgang Dr. Brey
Norbert Geister
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Braun GmbH
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Braun GmbH
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Publication of EP0917933A3 publication Critical patent/EP0917933A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3806—Accessories
    • B26B19/382—Built-in accessories
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D27/00—Shaving accessories
    • A45D27/46—Devices specially adapted for cleaning or disinfecting shavers or razors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3873—Electric features; Charging; Computing devices
    • B26B19/388—Sensors; Control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/4081—Shaving methods; Usage or wear indication; Testing methods
    • B26B21/4087—Usage or wear indication

Definitions

  • the present invention relates to a method for signal transmission between a razor and a cleaning device as well as appropriately designed devices
  • the cleaning device has a sensor with which it can be determined whether the shaver is connected to the mains.
  • the power supply of the shaver used in the cleaning device via a lever arm, the end of which establishes a power connection between the cleaning device and contact pins of the shaver.
  • the invention has for its object to limit the frequency of activation of the cleaning device.
  • a controller in the shaver can be connected via the holder with the cleaning device so that a signal transmission is possible. This can be done, for example, by contacting the shaver for the mains plug also this signal is transmitted. If this signal is then supplied to the cleaning device, a cleaning process can be started by the razor is optionally first brought into a specific cleaning position in the holder and then by activating the cleaning device.
  • a measuring system 104 or 105 is shown on a razor 101 for signal recording.
  • the razor 101 has a housing, for example by an accumulator is located and the mains voltage is converted.
  • a motor in this case, which may be designed as a DC motor.
  • the shaver 101 further includes a shaving head, which consists of the lower blade 102 and a non-illustrated upper blade.
  • This upper blade may consist of a shaving foil, which is attached by means of a Scherfolienarris on the razor 101.
  • the lower blade 102 is thereby reciprocated by the motor of the shaver 101 according to the arrow 103. Together with the shaving foil mounted during operation, the whiskers are thereby cut off.
  • the lower blade 102 becomes contaminated, as tallow and shaving dust settles on this lower blade 102. With a certain contamination, the shaving result is impaired.
  • a structure-borne sound pickup 104 can be attached directly to the movable lower blade 102.
  • the noise during shaving can then be recorded, wherein frequencies in the structure-borne sound range can be distinguished.
  • an airborne microphone 105 may also be provided. By means of this airborne microphone 105 then the noise can be recorded while shaving, with frequencies in the audible range can be distinguished.
  • the shaver 101 may comprise, for example, a microprocessor by means of which e.g. also the state of charge of the accumulator can be determined.
  • This microprocessor, the signal of the structure-borne sound pickup 104 and the airborne microphone 105 are supplied and then evaluated in the microprocessor accordingly.
  • this airborne microphone 105 can be mounted directly on the housing of the shaver 105.
  • the signal supply to the microprocessor also located in the shaver housing is then easier than with the use of a structure-borne sound pickup 104, in which the signal on the movable connection of the movable lower blade 102 with the shaver 101 must be transmitted.
  • a high-pass filter whose cut-off frequency can be, for example, 10 kHz, for filtering the running noises of the motor which disturb the signal evaluation.
  • a piezoelectric film can be used as a structure-borne sound pickup 104. If the movable lower blade 102 is formed as a tube knife block which is mounted on a plastic carrier, the piezoelectric film can be introduced between these plastic carrier and the tube cutter block. Since the structure-borne sound pickup 104 is mounted directly on the movable lower blade 102, this disturbing running noise of the engine significantly lower impact. Thus, the signal is detected directly without a disturbing background. For this reason, signal filtering may possibly be dispensed with.
  • Fig. 2 shows a flowchart of a method for signal evaluation, with the pollution of the shaver 101 can be derived.
  • step 201 the signal of the measuring system is recorded.
  • a frequency analysis of the signal is then made.
  • a decomposition of the signal can be made in its spectral components. It is also possible to determine the power density spectrum. It is then determined the frequency at which the spectral decomposition of the signal gives a maximum value. This frequency then corresponds to the natural frequency of the movable lower or upper blade.
  • this frequency is then compared with a nominal value of the natural frequency of the movable lower or upper blade.
  • This nominal value of the natural frequency corresponds to the natural frequency of the movable lower or upper blade in the case of a clean shaver 101. If the determined natural frequency is smaller than the desired value of the natural frequency by more than a specific threshold value, a transition is made to step 204.
  • step 204 In a transition to step 204 can be concluded that the lowering of the natural frequency was carried out by such a strong pollution that a cleaning of the shaver 101 is necessary or at least useful.
  • a signal is then generated which, for example, drives a display device perceptible to the user of the razor 101 or causes the razor 101 to be cleaned.
  • step 203 If the check in step 203 has shown that the determined natural frequency is not smaller than the desired value of the natural frequency by more than a specific threshold value, then it can be concluded that no cleaning is necessary. The procedure can then be ended.
  • Fig. 3 shows a procedure how the setpoint can be determined.
  • the target value for the movable lower or upper blade of a razor type is fixed. This approach is very easy to carry out, because only for a particular type of shaver, this setpoint must be stored in the microprocessor.
  • the natural frequency is determined during commissioning of the shaver 101 in step 301 and this value of the natural frequency is stored in step 302 as a setpoint.
  • This setpoint is then used in the following with the currently determined natural frequency in the sequence according to Fig. 2 used.
  • Commissioning can be carried out as part of a functional test at the factory of the manufacturer or else be the first commissioning by the user.
  • the setpoint value is also adapted here if the movable lower or upper blade is exchanged during the lifetime of the razor 101. The setpoint is then not held at a predetermined value.
  • step 401 it is checked in step 401 whether the movable lower or upper blade has been removed. If this is not the case, the procedure is according to Fig. 4 completed.
  • the natural frequency is first determined in step 402 and this value of the natural frequency is stored in step 403 as the desired value.
  • This setpoint is then used in the following with the currently determined natural frequency in the sequence according to Fig. 2 used.
  • step 501 it is checked in step 501 whether the new setpoint deviates from the old setpoint by more than a predetermined threshold. If this is the case, it can be concluded that a new movable lower or upper blade has been used. In this case, in step 502, a counter device or other device is normalized, by means of which the necessity of an exchange of the movable upper or upper blade is to be determined.
  • the setpoint value is also adapted here if the movable lower or upper blade is exchanged during the lifetime of the razor 101. The setpoint is then not held at a predetermined value.
  • step 601 it is checked in step 601 whether the natural frequency currently determined during operation has experienced a sudden increase compared to the natural frequency during the last shave. It is therefore checked whether the currently determined natural frequency is larger by more than a certain amount than the natural frequency determined during the last shave. If this is not the case, the procedure according to Fig. 6 completed.
  • step 602 the current value of the natural frequency is stored as the new desired value of the natural frequency.
  • This new setpoint will then be determined by the currently determined natural frequency in the sequence according to FIG Fig. 2 used.
  • the new setpoint After the new setpoint has been determined, it can also be determined whether an exchange of the movable lower or upper knife took place. It is possible that the movable lower blade 102 or upper blade was removed to clean it and reinsert after cleaning. In this case, therefore, the newly determined setpoint will correspond to the previous setpoint. Depending on the extent of the change in the desired value with the manufacturing tolerance, it is also conceivable, after a sudden change in the natural frequency in the sense of an increase in frequency from the deviation of the newly determined desired value from the previous desired value, to conclude whether the movable lower blade 102 or Upper blade The same as before or whether a new lower blade 102 or upper blade was used.
  • step 603 It is checked in step 603 whether the new setpoint deviates from the old setpoint by more than a predetermined threshold. If this is the case, it can be concluded that a new movable lower or upper blade has been used. In this case, in step 604, a counter device or other device is normalized, by means of which the necessity of an exchange of the movable upper or upper knife is to be determined.
  • Fig. 7 shows an evaluation unit 701, which may be, for example, a microprocessor in the shaver housing. From this micro-processor, for example, a signal may then be output to an output device 702 when the need for cleaning of the razor 101 has been recognized. Likewise, a signal can be output when the need for a change of the movable lower or upper blade has been detected.
  • the signal can be displayed to the user optically, acoustically and / or haptically - for example, by a clocking of the speed. It is advantageous if the acoustic or optical signal is displayed to the user for a certain time after switching off the shaver 101.
  • Fig. 8 shows a cleaning device 801, in which the shaver 101 can be introduced. This is done, for example, so that the shaving head of the shaver 101 is introduced downward. From the evaluation unit 701, which is located in the shaver 101, then, in the event that the need for cleaning the shaver 101 has been detected, a signal via the power supply of the shaver 101 can be output. The cleaning device 801 is connected to the shaver 101 via this power contact of the shaver 101. As a result, this signal can be supplied to the evaluation unit 701 of the cleaning device 801. However, it is also conceivable to supply the cleaning device 801 with the signal of the evaluation unit 701 by remote data transmission.
  • the cleaning device 801 in this case has retaining bolts 802, which hold the razor 101 in an upper position when no cleaning is to take place and the cleaning device 801 is to be used, for example, only for the storage of the razor 101.
  • these retaining bolts 802 are withdrawn, for example, by electromagnets and the shaver 101 is brought into a lower position.
  • the cleaning device 801 operates, which may be, for example, that the cleaning liquid 803, which is located in the cleaning device 801, is pumped around to perform a cleaning of the shaver 101.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The evaluation process determines the soiling level of the cutting head due to the shaved hair. It detects the noise from the top or bottom (102) cutter blade during cutting, by a measuring system (104,105). The frequency of the detected noise is evaluated by comparison with an ideal value corresponding to a clean cutting head, to provide an indication of the soiling level.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Signalübertragung zwischen einem Rasierapparat und einer Reinigungsvorrichtung sowie entsprechend ausgestaltete GeräteThe present invention relates to a method for signal transmission between a razor and a cleaning device as well as appropriately designed devices

Aus der US 5,111,580 ist bereits ein Verfahren bekannt, bei dem rein zeitgesteuert die Notwendigkeit einer Reinigung des Rasierapparats angezeigt wird.From the US 5,111,580 A method is already known in which purely time-controlled the need for cleaning the shaver is displayed.

Weiterhin ist aus der JP 61-220 688 A1 eine Lösung bekannt, bei der mittels optischer Methoden die Scherkopfverschmutzung durch Rasierstaub ermittelt wird.Furthermore, from the JP 61-220 688 A1 a solution is known in which by optical methods, the shaving head contamination is determined by shaving dust.

Es ist möglich, einen Rasierapparat in einer Halterung aufzubewahren, die entweder gleichzeitig eine Reinigungsvorrichtung für den Rasierapparat darstellt oder aber mit einer solchen Reinigungsvorrichtung gekoppelt ist. Um nicht bei jedem Einbringen des Rasierapparates die Reinigungsvorrichtung zu aktivieren und damit einen gewissen Verbrauch an Reinigungsflüssigkeit zu verursachen, ist es vorteilhaft, die Häufigkeit der Aktivierung der Reinigungsvorrichtung zu begrenzen. Grundsätzlich ist es dabei denkbar, die Reinigungsvorrichtung durch den Benutzer zu aktivieren, indem dieser beispielsweise eine Taste betätigt. Dies wird der Benutzer sinnvollerweise dann tun, wenn das Signal ausgegeben wird, das die Notwendigkeit einer Reinigung des Rasierapparates anzeigt. Aus der DE 44 02 236 ist eine Reinigungsvorrichtung für einen Rasierapparat bekannt, die eine von einer Schaltvorrichtung ansteuerbare Spule aufweist, durch die mittels eines im Rasierapparat vorhandenen Reedkontakt-Schalters der Rasierapparat ein- und ausgeschaltet werden kann. Ferner weist die Reinigungsvorrichtung einen Sensor auf, mit dem festgestellt werden kann, ob der Rasierapparat ans Netz angeschlossen ist. Die Stromversorgung des in die Reinigungsvorrichtung eingesetzten Rasierapparats erfolgt über einen Hebelarm, dessen Ende eine Stromverbindung zwischen der Reinigungsvorrichtung und Kontaktstiften des Rasierapparats herstellt.It is possible to store a razor in a holder which either simultaneously constitutes a razor cleaning device or is coupled to such a cleaning device. In order not to activate the cleaning device with each introduction of the shaver and thus to cause a certain consumption of cleaning liquid, it is advantageous to limit the frequency of activation of the cleaning device. Basically, it is conceivable to activate the cleaning device by the user, for example, by pressing a button. This is conveniently done by the user when the signal indicating the need for razor cleaning is issued. From the DE 44 02 236 there is known a razor cleaning device having a coil actuatable by a switching device whereby the razor can be switched on and off by means of a reed contact switch provided in the razor. Furthermore, the cleaning device has a sensor with which it can be determined whether the shaver is connected to the mains. The power supply of the shaver used in the cleaning device via a lever arm, the end of which establishes a power connection between the cleaning device and contact pins of the shaver.

Der Erfindung liegt die Aufgabe zugrunde, die Häufigkeit der Aktivierung der Reinigungsvorrichtung zu begrenzen .The invention has for its object to limit the frequency of activation of the cleaning device.

Erfindungsgemäß kann beispielsweise ein Controller im Rasierapparat über die Halterung mit der Reinigungsvorrichtung so verbunden sein, daß auch eine Signalübertragung möglich ist. Dies kann beispielsweise erfolgen, indem über den Kontakt des Rasierapparats für den Netzstecker auch dieses Signal übertragen wird. Wenn dieses Signal dann der Reinigungsvorrichtung zugeführt wird, kann ein Reinigungsvorgang gestartet werden, indem der Rasierapparat gegebenenfalls zunächst in eine bestimmte Reinigungsposition in der Halterung gebracht wird und indem dann die Reinigungsvorrichtung aktiviert wird.According to the invention, for example, a controller in the shaver can be connected via the holder with the cleaning device so that a signal transmission is possible. This can be done, for example, by contacting the shaver for the mains plug also this signal is transmitted. If this signal is then supplied to the cleaning device, a cleaning process can be started by the razor is optionally first brought into a specific cleaning position in the holder and then by activating the cleaning device.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt. Es zeigt:

Fig. 1:
ein Meßsystem an einem Rasierapparat zur Signalaufnahme,
Fig. 2:
ein Ablaufdiagramm eines Verfahrens zur Signalauswertung,
Fig. 3:
eine Vorgehensweise zur Bestimmung des Sollwertes,
Fig. 4:
eine weitere Vorgehensweise zur Bestimmung des Sollwertes,
Fig. 5:
eine Vorgehensweise, um den notwendigen Wechsel des bewegbaren Unter- bzw. Obermessers anzuzeigen,
Fig. 6:
eine weitere Vorgehensweise zur Bestimmung des Sollwertes und zur Anzeige eines notwendigen Wechsels des bewegbaren Unter- bzw. Ober- messers,
Fig. 7:
eine Anordnung, um dem Benutzer die Notwendigkeit einer Reinigung und/oder eines Wechsels des bewegbaren Unter- bzw. Obermessers anzuzeigen und
Fig. 8:
eine Reinigungsvorrichtung, in die ein Rasierapparat einbringbar ist.
An embodiment of the invention is shown in the drawings. It shows:
Fig. 1:
a measuring system on a razor for signal recording,
Fig. 2:
a flowchart of a method for signal evaluation,
3:
a procedure for determining the setpoint,
4:
a further procedure for determining the desired value,
Fig. 5:
a procedure for indicating the necessary change of the movable lower or upper knife,
Fig. 6:
a further procedure for determining the desired value and for indicating a necessary change of the movable lower or upper knife,
Fig. 7:
an arrangement to indicate to the user the need for cleaning and / or a change of the movable upper or upper blade and
Fig. 8:
a cleaning device into which a razor can be introduced.

In Fig. 1 ist ein Meßsystem 104 bzw. 105 an einem Rasierapparat 101 zur Signalaufnahme gezeigt. Der Rasierapparat 101 weist ein Gehäuse auf, indem sich beispielsweise ein Akkumulator befindet und die Netzspannung gewandelt wird. Außerdem befindet sich in diesem Gehäuse noch ein Motor, der als DC-Motor ausgebildet sein kann. Von diesem nicht näher gezeigten Motor wird bei dem dargestellten Rasierapparat 101 ein Untermeser 102 angetrieben. Der Rasierapparat 101 weist ferner einen Scherkopf auf, der aus dem Untermesser 102 besteht sowie aus einem nicht näher dargestellten Obermesser. Dieses Obermesser kann dabei aus einer Scherfolie bestehen, die mittels eines Scherfolienträgers auf dem Rasierapparat 101 angebracht wird. Das Untermesser 102 wird dabei vom Motor des Rasierapparats 101 entsprechend dem Pfeil 103 hin- und herbewegt. Zusammen mit der beim Betrieb montierten Scherfolie werden dadurch die Barthaare abgeschnitten.In Fig. 1 a measuring system 104 or 105 is shown on a razor 101 for signal recording. The razor 101 has a housing, for example by an accumulator is located and the mains voltage is converted. In addition, there is still a motor in this case, which may be designed as a DC motor. From this motor not shown in detail in the illustrated razor 101 a Untermeser 102 driven. The shaver 101 further includes a shaving head, which consists of the lower blade 102 and a non-illustrated upper blade. This upper blade may consist of a shaving foil, which is attached by means of a Scherfolienträgers on the razor 101. The lower blade 102 is thereby reciprocated by the motor of the shaver 101 according to the arrow 103. Together with the shaving foil mounted during operation, the whiskers are thereby cut off.

Während des Rasierens verschmutzt dabei das Untermesser 102, indem sich an diesem Untermesser 102 Talg und Rasierstaub absetzt. Bei einer bestimmten Verschmutzung wird dabei das Rasierergebnis beeinträchtigt.During shaving, the lower blade 102 becomes contaminated, as tallow and shaving dust settles on this lower blade 102. With a certain contamination, the shaving result is impaired.

Weiterhin ist der Fig. 1 zu entnehmen, daß an dem bewegbaren Untermesser 102 direkt ein Körperschallaufnehmer 104 angebracht sein kann. Mittels dieses Körperschallaufnehmers 104 können dann die Geräusche beim Rasieren aufgenommen werden, wobei Frequenzen im Körperschallbereich unterschieden werden können.Furthermore, the Fig. 1 it can be seen that a structure-borne sound pickup 104 can be attached directly to the movable lower blade 102. By means of this structure-borne sound pickup 104, the noise during shaving can then be recorded, wherein frequencies in the structure-borne sound range can be distinguished.

Alternativ zu dem Körperschallaufnehmer 104 kann auch ein Luftschallmikrophon 105 vorgesehen sein. Mittels dieses Luftschallmikrophons 105 können dann die Geräusche beim Rasieren aufgenommen werden, wobei Frequenzen im hörbaren Bereich unterschieden werden können.As an alternative to the structure-borne sound pickup 104, an airborne microphone 105 may also be provided. By means of this airborne microphone 105 then the noise can be recorded while shaving, with frequencies in the audible range can be distinguished.

Der Rasierapparat 101 kann dabei beispielsweise einen Mikroprozessor aufweisen, mittels dem z.B. auch der Ladezustand des Akkumulators ermittelt werden kann. Diesem Mikroprozessor kann das Signal des Körperschallaufnehmers 104 bzw. des Luftschallmikrophons 105 zugeführt und dann in dem Mikroprozessor entsprechend ausgewertet werden.The shaver 101 may comprise, for example, a microprocessor by means of which e.g. also the state of charge of the accumulator can be determined. This microprocessor, the signal of the structure-borne sound pickup 104 and the airborne microphone 105 are supplied and then evaluated in the microprocessor accordingly.

Dabei erweist es sich bei dem Luftschallmikrophon 105 als vorteilhaft, daß dieses Luftschallmikrophon 105 direkt an dem Gehäuse des Rasierapparates 105 angebracht sein kann. Die Signalzuführung zu dem ebenfalls in dem Rasierergehäuse befindlichen Mikroprozessor ist dann einfacher als bei der Verwendung eines Körperschallaufnehmers 104, bei dem das Signal über die bewegliche Verbindung des bewegbaren Untermesser 102 mit dem Rasierapparat 101 übertragen werden muß. Um bei Verwendung eines Luftschallmikrophons 105 die für die Signalauswertung störenden Laufgeräusche des Motors zu filtern, ist es notwendig ein Hochpaßfilter vorzusehen, dessen Eckfrequenz beispielsweise bei 10 kHz liegen kann.It proves to be advantageous in the airborne microphone 105 that this airborne microphone 105 can be mounted directly on the housing of the shaver 105. The signal supply to the microprocessor also located in the shaver housing is then easier than with the use of a structure-borne sound pickup 104, in which the signal on the movable connection of the movable lower blade 102 with the shaver 101 must be transmitted. To use when using a It is necessary to provide a high-pass filter whose cut-off frequency can be, for example, 10 kHz, for filtering the running noises of the motor which disturb the signal evaluation.

Als Körperschallaufnehmer 104 kann beispielsweise eine piezoelektrische Folie Verwendung finden. Wenn das bewegbare Untermesser 102 als Rohrmesserblock ausgebildet ist, der auf einem Kunststoffträger angebracht ist, kann die piezoelektrische Folie zwischen diesen Kunststoffträger und den Rohrmesserblock eingebracht sein. Da der Körperschallaufnehmer 104 direkt an dem bewegbaren Untermesser 102 angebracht ist, wirken sich hierbei störende Laufgeräusche des Motors deutlich geringer aus. Es wird also unmittelbar das Signal erfaßt, ohne einen störenden Untergrund. Aus diesem Grund kann unter Umständen auch auf eine Signalfilterung verzichtet werden.As a structure-borne sound pickup 104, for example, a piezoelectric film can be used. If the movable lower blade 102 is formed as a tube knife block which is mounted on a plastic carrier, the piezoelectric film can be introduced between these plastic carrier and the tube cutter block. Since the structure-borne sound pickup 104 is mounted directly on the movable lower blade 102, this disturbing running noise of the engine significantly lower impact. Thus, the signal is detected directly without a disturbing background. For this reason, signal filtering may possibly be dispensed with.

Fig. 2 zeigt ein Ablaufdiagramm eines Verfahrens zur Signalauswertung, mit dem die Verschmutzung des Rasierapparates 101 abgeleitet werden kann. Fig. 2 shows a flowchart of a method for signal evaluation, with the pollution of the shaver 101 can be derived.

Im Schritt 201 wird dabei das Signal des Meßsystems aufgenommen.In step 201, the signal of the measuring system is recorded.

Im Schritt 202 wird dann eine Frequenzanalyse des Signales vorgenommen. Dabei kann beispielsweise mittels der Fast-Fourier-Transformation eine Zerlegung des Signales in seine spektralen Bestandteile vorgenommen werden. Es ist auch möglich, das Leistungsdichtespektrum zu ermitteln. Es wird dann die Frequenz ermittelt, bei der die spektrale Zerlegung des Signales einen maximalen Wert ergibt. Diese Frequenz entspricht dann der Eigenfrequenz des bewegbaren Unter- bzw. Obermessers.In step 202, a frequency analysis of the signal is then made. In this case, for example, by means of the fast Fourier transform a decomposition of the signal can be made in its spectral components. It is also possible to determine the power density spectrum. It is then determined the frequency at which the spectral decomposition of the signal gives a maximum value. This frequency then corresponds to the natural frequency of the movable lower or upper blade.

Im Schritt 203 wird dann diese Frequenz verglichen mit einem Sollwert der Eigenfrequenz des bewegbaren Unter- bzw. Obermessers. Dieser Sollwert der Eigenfrequenz entspricht dabei der Eigenfrequenz des bewegbaren Unter- bzw. Obermessers bei einem sauberen Rasierapparat 101. Ist die ermittelte Eigenfrequenz um mehr als einen bestimmten Schwellwert kleiner als der Sollwert der Eigenfrequenz, so erfolgt ein Übergang zu dem Schritt 204.In step 203, this frequency is then compared with a nominal value of the natural frequency of the movable lower or upper blade. This nominal value of the natural frequency corresponds to the natural frequency of the movable lower or upper blade in the case of a clean shaver 101. If the determined natural frequency is smaller than the desired value of the natural frequency by more than a specific threshold value, a transition is made to step 204.

Bei einem Übergang zum Schritt 204 kann geschlossen werden, daß die Erniedrigung der Eigenfrequenz durch eine solch starke Verschmutzung erfolgte, daß eine Reinigung des Rasierapparates 101 notwendig oder zumindest sinnvoll ist. In dem Schritt 204 wird dann ein Signal generiert, das beispielsweise eine für den Benutzer des Rasierapparats 101 wahrnehmbare Anzeigevorrichtung ansteuert oder eine Reinigung des Rasierapparats 101 bewirkt.In a transition to step 204 can be concluded that the lowering of the natural frequency was carried out by such a strong pollution that a cleaning of the shaver 101 is necessary or at least useful. In step 204, a signal is then generated which, for example, drives a display device perceptible to the user of the razor 101 or causes the razor 101 to be cleaned.

Ergab die Überprüfung in dem Schritt 203, daß die ermittelte Eigenfrequenz nicht um mehr als einen bestimmten Schwellwert kleiner als der Sollwert der Eigenfrequenz, so kann geschlossen werden, daß keine Reinigung notwendig ist. Der Ablauf des Verfahrens kann dann beendet werden.If the check in step 203 has shown that the determined natural frequency is not smaller than the desired value of the natural frequency by more than a specific threshold value, then it can be concluded that no cleaning is necessary. The procedure can then be ended.

Fig. 3 zeigt dabei eine Vorgehensweise, wie der Sollwert bestimmt werden kann. Fig. 3 shows a procedure how the setpoint can be determined.

Im einfachsten Fall wird der Sollwert für das bewegbare Unter- bzw. Obermesser eines Rasierapparatetyps fest vorgegeben. Diese Vorgehensweise ist sehr einfach durchführbar, weil nur für einen bestimmten Rasierapparatetyp dieser Sollwert in dem Mikroprozessor abgelegt werden muß.In the simplest case, the target value for the movable lower or upper blade of a razor type is fixed. This approach is very easy to carry out, because only for a particular type of shaver, this setpoint must be stored in the microprocessor.

Bei dem in Fig. 3 dargestellten Ablaufdiagramm können jedoch Toleranzen bei der Fertigung der bewegbaren Unter- bzw. Obermesser ausgeglichen werden, die Einfluß auf die Eigenfrequenz haben.At the in Fig. 3 However, shown flowchart tolerances can be compensated in the production of the movable lower or upper blade, which have an influence on the natural frequency.

Dazu wird bei der Inbetriebnahme des Rasierapparates 101 in dem Schritt 301 die Eigenfrequenz ermittelt und dieser Wert der Eigenfrequenz in dem Schritt 302 als Sollwert gespeichert.For this purpose, the natural frequency is determined during commissioning of the shaver 101 in step 301 and this value of the natural frequency is stored in step 302 as a setpoint.

Dieser Sollwert wird dann im folgenden mit der aktuell ermittelten Eigenfrequenz bei dem Ablauf gemäß Fig. 2 verwendet.This setpoint is then used in the following with the currently determined natural frequency in the sequence according to Fig. 2 used.

Die Inbetriebnahme kann dabei im Rahmen einer Funktionsprüfung noch im Werk des Herstellers erfolgen oder aber auch die erste Inbetriebnahme durch den Benutzer sein.Commissioning can be carried out as part of a functional test at the factory of the manufacturer or else be the first commissioning by the user.

Auch bei dem in Fig. 4 dargestellten Ablaufdiagramm können Toleranzen der bewegbaren Unter- bzw. Obermesser ausgeglichen werden, die Einfluß auf die Eigenfrequenz haben. Vorteilhafterweise wird hier der Sollwert auch dann angepaßt, wenn während der Lebensdauer des Rasierapparates 101 das bewegbare Unter- bzw. Obermesser ausgetauscht wird. Der Sollwert wird dann also nicht auf einem einmal vorgegebenen Wert festgehalten.Also at the in Fig. 4 shown flowchart tolerances of the movable lower or upper blade can be compensated, which have an influence on the natural frequency. Advantageously, the setpoint value is also adapted here if the movable lower or upper blade is exchanged during the lifetime of the razor 101. The setpoint is then not held at a predetermined value.

Dazu wird in dem Schritt 401 geprüft, ob das bewegbare Unter- bzw. Obermesser entnommen wurde. Ist dies nicht der Fall, ist der Ablauf gemäß Fig. 4 beendet.For this purpose, it is checked in step 401 whether the movable lower or upper blade has been removed. If this is not the case, the procedure is according to Fig. 4 completed.

Wenn jedoch das bewegbare Unter- bzw. Obermesser entnommen wurde, wird zunächst in dem Schritt 402 die Eigenfrequenz ermittelt und dieser Wert der Eigenfrequenz in dem Schritt 403 als Sollwert gespeichert.However, if the movable lower or upper blade has been removed, the natural frequency is first determined in step 402 and this value of the natural frequency is stored in step 403 as the desired value.

Dieser Sollwert wird dann im folgenden mit der aktuell ermittelten Eigenfrequenz bei dem Ablauf gemäß Fig. 2 verwendet.This setpoint is then used in the following with the currently determined natural frequency in the sequence according to Fig. 2 used.

Nachdem bei dem Verfahren nach Anspruch 4 der neue Sollwert ermittelt wurde, kann entsprechend dem in Fig. 5 gezeigten Ablauf ermittelt werden, ob ein Austausch des bewegbaren Unter- bzw. Obermessers erfolgte. Es ist nämlich auch möglich, daß das bewegbare Untermesser bzw. Obermesser entnommen wurde, um es zu reinigen und nach der Reinigung wieder einzusetzen. In diesem Fall wird also der neu ermittelte Sollwert dem bisherigen Sollwert entsprechen. In Abhängigkeit von dem Ausmaß der Änderung des Sollwertes mit der Fertigungstoleranz ist es auch denkbar, nach einem Wiedereinsetzen des bewegbaren Untermessers 102 bzw. Obermessers aus der Abweichung des neu ermittelten Sollwertes von dem bisherigen Sollwert darauf zu schließen, ob das bewegbare Untermesser 102 bzw. Obermesser dasselbe ist wie vorher oder ob ein neues Untermesser 102 bzw. Obermesser eingesetzt wurde. Es wird also in dem Schritt 501 geprüft, ob der neue Sollwert von dem alten Sollwert um mehr als einen vorgegebenen Schwellwert abweicht. Wenn dies der Fall ist, kann geschlossen werden, daß ein neues bewegbares Unter- bzw. Obermesser eingesetzt wurde. In diesem Fall wird in dem Schritt 502 eine Zählvorrichtung oder eine sonstige Einrichtung normiert, mittels der die Notwendigkeit eines Austausches des bewegbaren Unter- bzw. Obermessers ermittelt werden soll.After the new setpoint has been determined in the method according to claim 4, according to the in Fig. 5 shown sequence, whether a replacement of the movable lower or upper blade was done. It is also possible that the movable lower blade or upper blade was removed to clean it and reuse it after cleaning. In this case, therefore, the newly determined setpoint will correspond to the previous setpoint. Depending on the extent of the change in the desired value with the manufacturing tolerance, it is also conceivable, after reinserting the movable lower blade 102 or upper blade from the deviation of the newly determined setpoint from the previous setpoint to conclude whether the movable lower blade 102 or upper blade the same as before or whether a new lower blade 102 or upper blade was used. It is therefore checked in step 501 whether the new setpoint deviates from the old setpoint by more than a predetermined threshold. If this is the case, it can be concluded that a new movable lower or upper blade has been used. In this case, in step 502, a counter device or other device is normalized, by means of which the necessity of an exchange of the movable upper or upper blade is to be determined.

Auch bei dem in Fig. 6 dargestellten Ablaufdiagramm können Toleranzen der bewegbaren Unter- bzw. Obermesser ausgeglichen werden, die Einfluß auf die Eigenfrequenz haben. Vorteilhafterweise wird hier der Sollwert auch dann angepaßt, wenn während der Lebensdauer des Rasierapparates 101 das bewegbare Unter- bzw. Obermesser ausgetauscht wird. Der Sollwert wird dann also nicht auf einem einmal vorgegebenen Wert festgehalten.Also at the in Fig. 6 shown flowchart tolerances of the movable lower or upper blade can be compensated, which have an influence on the natural frequency. Advantageously, the setpoint value is also adapted here if the movable lower or upper blade is exchanged during the lifetime of the razor 101. The setpoint is then not held at a predetermined value.

Zunächst wird dabei bei Inbetriebnahme der Sollwert festgelegt, wie dies beispielsweise im Zusammenhang mit Fig. 3 erläutert wurde.Initially, the setpoint is set during commissioning, as for example in connection with Fig. 3 was explained.

Dazu wird in dem Schritt 601 geprüft, ob die aktuell beim Betrieb ermittelte Eigenfrequenz eine sprunghafte Erhöhung erfahren hat gegenüber der Eigenfrequenz bei der letzten Rasur. Es wird also geprüft, ob die aktuell ermittelte Eigenfrequenz um mehr als einen bestimmten Betrag größer ist als die bei der letzten Rasur ermittelte Eigenfrequenz. Ist dies nicht der Fall, wird der Ablauf gemäß Fig. 6 beendet.For this purpose, it is checked in step 601 whether the natural frequency currently determined during operation has experienced a sudden increase compared to the natural frequency during the last shave. It is therefore checked whether the currently determined natural frequency is larger by more than a certain amount than the natural frequency determined during the last shave. If this is not the case, the procedure according to Fig. 6 completed.

Ist dies jedoch der Fall, so kann daraus entnommen werden, daß entweder ein neues bewegbares Unter- bzw. Obermesser eingesetzt wurde oder das bisher verwendete Unter- bzw. Obermesser gereinigt wurde. Es wird also in dem Schritt 602 der aktuelle Wert der Eigenfrequenz als neuer Sollwert der Eigenfrequenz gespeichert.If this is the case, then it can be seen that either a new movable lower or upper blade was used or the previously used lower or upper blade was cleaned. Thus, in step 602, the current value of the natural frequency is stored as the new desired value of the natural frequency.

Dieser neue Sollwert wird dann im folgenden mit der aktuell ermittelten Eigenfrequenz bei dem Ablauf gemäß Fig. 2 verwendet.This new setpoint will then be determined by the currently determined natural frequency in the sequence according to FIG Fig. 2 used.

Nachdem der neue Sollwert ermittelt wurde, kann weiterhin ermittelt werden, ob ein Austausch des bewegbaren Unter- bzw. Obermessers erfolgte. Es ist möglich, daß das bewegbare Untermesser 102 bzw. Obermesser entnommen wurde, um es zu reinigen und nach der Reinigung wieder einzusetzen. In diesem Fall wird also der neu ermittelte Sollwert dem bisherigen Sollwert entsprechen. In Abhängigkeit von dem Ausmaß der Änderung des Sollwertes mit der Fertigungstoleranz ist es auch denkbar, nach einer sprunghaften Änderung der Eigenfrequenz im Sinne eines Anstieges der Frequenz aus der Abweichung des neu ermittelten Sollwertes von dem bisherigen Sollwert darauf zu schließen, ob das bewegbare Untermesser 102 bzw. Obermesser dasselbe ist wie vorher oder ob ein neues Untermesser 102 bzw. Obermesser eingesetzt wurde. Es wird dazu in dem Schritt 603 geprüft, ob der neue Sollwert von dem alten Sollwert um mehr als einen vorgegebenen Schwellwert abweicht. Wenn dies der Fall ist, kann geschlossen werden, daß ein neues bewegbares Unter- bzw. Obermesser eingesetzt wurde. In diesem Fall wird in dem Schritt 604 eine Zählvorrichtung oder eine sonstige Einrichtung normiert, mittels der die Notwendigkeit eines Austausches des bewegbaren Unter- bzw. Obermessers ermittelt werden soll.After the new setpoint has been determined, it can also be determined whether an exchange of the movable lower or upper knife took place. It is possible that the movable lower blade 102 or upper blade was removed to clean it and reinsert after cleaning. In this case, therefore, the newly determined setpoint will correspond to the previous setpoint. Depending on the extent of the change in the desired value with the manufacturing tolerance, it is also conceivable, after a sudden change in the natural frequency in the sense of an increase in frequency from the deviation of the newly determined desired value from the previous desired value, to conclude whether the movable lower blade 102 or Upper blade The same as before or whether a new lower blade 102 or upper blade was used. It is checked in step 603 whether the new setpoint deviates from the old setpoint by more than a predetermined threshold. If this is the case, it can be concluded that a new movable lower or upper blade has been used. In this case, in step 604, a counter device or other device is normalized, by means of which the necessity of an exchange of the movable upper or upper knife is to be determined.

Fig. 7 zeigt eine Auswerteeinheit 701, die beispielsweise ein Mikroprozessor in dem Rasierergehäuse sein kann. Von diesem Mikroprozesser kann dann beispielsweise ein Signal zu einer Ausgabeeinrichtung 702 ausgegeben werden, wenn die Notwendigkeit einer Reinigung des Rasierapparates 101 erkannt worden ist. Ebenso kann dabei ein Signal ausgegeben werden, wenn die Notwendigkeit eines Wechsels des bewegbaren Unter- bzw. Obermessers erkannt worden ist. Das Signal kann dem Benutzer dabei optisch, akustisch und/oder haptisch - beispielsweise durch eine Taktung der Drehzahl - angezeigt werden. Vorteilhaft ist es dabei, wenn das akustisch oder optische Signal dem Benutzer noch eine gewisse Zeit nach dem Ausschalten des Rasierapparates 101 angezeigt wird. Fig. 7 shows an evaluation unit 701, which may be, for example, a microprocessor in the shaver housing. From this micro-processor, for example, a signal may then be output to an output device 702 when the need for cleaning of the razor 101 has been recognized. Likewise, a signal can be output when the need for a change of the movable lower or upper blade has been detected. The signal can be displayed to the user optically, acoustically and / or haptically - for example, by a clocking of the speed. It is advantageous if the acoustic or optical signal is displayed to the user for a certain time after switching off the shaver 101.

Fig. 8 zeigt eine Reinigungsvorrichtung 801, in die der Rasierapparat 101 eingebracht werden kann. Dies erfolgt beispielsweise so, daß der Scherkopf des Rasierapparates 101 nach unten eingebracht wird. Von der Auswerteeinheit 701, die sich in dem Rasierapparat 101 befindet, kann dann im Falle, daß die Notwendigkeit einer Reinigung des Rasierapparates 101 erkannt worden ist, ein Signal über den Netzanschluß des Rasierapparates 101 ausgegeben werden. Die Reinigungsvorrichtung 801 wird dabei über diesen Netzkontakt des Rasierapparates 101 mit dem Rasierapparat 101 verbunden. Dadurch kann dieses Signal der Auswerteeinheit 701 der Reinigungsvorrichtung 801 zugeführt werden. Ebenso ist es aber auch denkbar, der Reinigungsvorrichtung 801 das Signal der Auswerteeinheit 701 mittels Datenfernübertragung zuzuführen. Die Reinigungsvorrichtung 801 weist dabei in dem gezeigten Ausführungsbeispiel Haltebolzen 802 auf, die den Rasierapparat 101 in einer oberen Position halten, wenn keine Reinigung erfolgen soll und die Reinigungsvorrichtung 801 beispielsweise lediglich zur Aufbewahrung des Rasierapparates 101 verwendet werden soll. Im Falle, daß von der Auswerteeinheit 701 das Signal ausgegeben wird, werden diese Haltebolzen 802 beispielsweise durch Elektromagnete zurückgezogen und der Rasierapparat 101 in eine untere Position gebracht. Weiterhin nimmt in diesem Falle die Reinigungsvorrichtung 801 ihren Betrieb auf, was beispielsweise darin bestehen kann, daß die Reinigungsflüssigkeit 803, die sich in der Reinigungsvorrichtung 801 befindet, umgepumpt wird, um eine Reinigung des Rasierapparats 101 durchzuführen. Fig. 8 shows a cleaning device 801, in which the shaver 101 can be introduced. This is done, for example, so that the shaving head of the shaver 101 is introduced downward. From the evaluation unit 701, which is located in the shaver 101, then, in the event that the need for cleaning the shaver 101 has been detected, a signal via the power supply of the shaver 101 can be output. The cleaning device 801 is connected to the shaver 101 via this power contact of the shaver 101. As a result, this signal can be supplied to the evaluation unit 701 of the cleaning device 801. However, it is also conceivable to supply the cleaning device 801 with the signal of the evaluation unit 701 by remote data transmission. The cleaning device 801 in this case has retaining bolts 802, which hold the razor 101 in an upper position when no cleaning is to take place and the cleaning device 801 is to be used, for example, only for the storage of the razor 101. In the event that the signal is output by the evaluation unit 701, these retaining bolts 802 are withdrawn, for example, by electromagnets and the shaver 101 is brought into a lower position. Furthermore, in this case, the cleaning device 801 operates, which may be, for example, that the cleaning liquid 803, which is located in the cleaning device 801, is pumped around to perform a cleaning of the shaver 101.

Claims (7)

  1. A method for transmitting a signal between a shaving apparatus (101) and a cleaning device (801), wherein the shaving apparatus (101) has a evaluation unit (701) to determine the degree of soiling, which evaluation unit (701) emits a soiling signal as necessary, wherein the method has the following steps:
    o detecting the need to clean the shaving apparatus (101) by the evaluation unit (701) of the shaving apparatus (101);
    o evaluation unit (701)
    o connecting the cleaning device (801) with the shaving apparatus (101) via the grid contacts of the shaving apparatus (101)
    o outputting the soiling signal via the grid connection of the shaving apparatus (101) and sending the soiling signal to the cleaning device (801)
  2. A method for transmitting a signal between a shaving apparatus (101) and a cleaning device (801), wherein the shaving apparatus (101) has an evaluation unit (701) to determine the degree of soiling, which evaluation unit (701) emits a soiling signal as necessary, wherein the method has the following steps:
    o detecting the need to clean the shaving apparatus (101) by the evaluation unit (701) of the shaving apparatus (101);
    o then sending the soiling signal to the cleaning device (801) by means of remote data transmission.
  3. The Method according to claim 1 or 2 that has the following step:
    o initiating cleaning of the shaving apparatus (101) by the cleaning device as a function of the sent soiling signal.
  4. A cleaning device (801) for a shaving apparatus (101) into which a shaving apparatus (101) may be inserted, which shaving apparatus has a grid connection with a contact, and in which an evaluation unit (701) is disposed for outputting a soiling signal, wherein the cleaning device (801) is connectable with the shaving apparatus (101) via the contact and the cleaning device (801) is equipped to receive the soiling signal as sent by the shaving apparatus (101) via the grid connection.
  5. A cleaning device (801) for a shaving apparatus (101) in which an evaluation unit (701) for outputting a soiling signal is located, with a device for remote data transmission for sending a soiling signal from the shaving apparatus (101) that has a device for remote data transmission of said soiling signal.
  6. A shaving apparatus (101) with an evaluation unit (701) for determining soiling, via which a soiling signal may be emitted as necessary, wherein the soiling signal may be output via the grid connection of the shaving apparatus (101) and be sent to a cleaning device (801).
  7. A system including a shaving apparatus (101) according to claim 6 and the cleaning device (801) according to any one of claims 4 or 5.
EP98114442A 1996-02-23 1996-12-23 Method for transferring data between a shaving apparatus and a cleaning device, and apparatus conceived accordingly Expired - Lifetime EP0917933B1 (en)

Applications Claiming Priority (3)

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DE19606719A DE19606719C2 (en) 1996-02-23 1996-02-23 Method for determining the contamination of a shaver and device for carrying out the method
DE19606719 1996-02-23
EP96944646A EP0909232B1 (en) 1996-02-23 1996-12-23 Process for determining the level of shaved hair in a shaver and device for carrying out said process

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EP96944646A Division-Into EP0909232B1 (en) 1996-02-23 1996-12-23 Process for determining the level of shaved hair in a shaver and device for carrying out said process
EP96944646A Division EP0909232B1 (en) 1996-02-23 1996-12-23 Process for determining the level of shaved hair in a shaver and device for carrying out said process
EP96944646.7 Division 1997-08-28

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EP0917933A2 EP0917933A2 (en) 1999-05-26
EP0917933A3 EP0917933A3 (en) 2004-11-03
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EP96944646A Expired - Lifetime EP0909232B1 (en) 1996-02-23 1996-12-23 Process for determining the level of shaved hair in a shaver and device for carrying out said process

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EP (2) EP0917933B1 (en)
JP (2) JP2000513599A (en)
CN (1) CN1128698C (en)
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DE (2) DE19606719C2 (en)
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EP0909232B1 (en) 2002-02-27
JP2000513599A (en) 2000-10-17
ATE541686T1 (en) 2012-02-15
JPH11192389A (en) 1999-07-21
DE19606719C2 (en) 1997-12-11
DE19606719A1 (en) 1997-08-28
EP0909232A1 (en) 1999-04-21
JP4059578B2 (en) 2008-03-12
ATE213689T1 (en) 2002-03-15
DE59608811D1 (en) 2002-04-04
CN1209088A (en) 1999-02-24
CN1128698C (en) 2003-11-26
EP0917933A3 (en) 2004-11-03
WO1997030827A1 (en) 1997-08-28
HK1016924A1 (en) 1999-11-12
EP0917933A2 (en) 1999-05-26
US6189215B1 (en) 2001-02-20

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