EP0908278B1 - Method for determining the quantity of the cutting material cut by an electrically driven cutting tool and hair cutting tool with means for the execution of the method - Google Patents

Method for determining the quantity of the cutting material cut by an electrically driven cutting tool and hair cutting tool with means for the execution of the method Download PDF

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Publication number
EP0908278B1
EP0908278B1 EP98114058A EP98114058A EP0908278B1 EP 0908278 B1 EP0908278 B1 EP 0908278B1 EP 98114058 A EP98114058 A EP 98114058A EP 98114058 A EP98114058 A EP 98114058A EP 0908278 B1 EP0908278 B1 EP 0908278B1
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EP
European Patent Office
Prior art keywords
pulses
cutting tool
pass filter
fluctuations
hair cutting
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EP98114058A
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German (de)
French (fr)
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EP0908278A2 (en
EP0908278A3 (en
Inventor
Jochen Cimbal
Günther Bergk
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Braun GmbH
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Braun GmbH
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    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/22—Safety devices specially adapted for cutting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/27—Means for performing other operations combined with cutting

Definitions

  • the present invention relates to a method for determining the amount of an electrically driven cutting tool cut material and a Hair clipper with a circuit arrangement for performing the method.
  • the method according to the invention is suitable for cutting tools with which material to be cut is cut in a plurality of individual cutting operations, and in particular intended for those whose function is cut after a certain period of operation Cuttings are affected. This method is preferred for example to measure and display the degree of pollution of an electrical powered shaver, beard trimmer or the like ..
  • JP-A-02-241480 by means of a light barrier Measure the amount of accumulated shaving dust in the shaving head and after exceeding it of a threshold value to indicate the need for cleaning.
  • a razor the degree of pollution according to one of the latter two Process is determined, necessarily contains appropriate in the shaving head Measuring devices. This increases compared to a shaver without a contamination indicator the design effort is considerable.
  • a shaver with a clogging indicator is known, in which a measurement of the current drawn by the razor motor by a Microcomputer is done, which is either proportional to the current or current peaks Voltage values are supplied in digital form. Because of the A / D conversion either the current magnitude of the current within the sampling intervals (Fig. 1 of US 5,274,735) or the peak value of the current within the intervals (FIG. 2 of US 5,274,735) measured, which of course differ from interval to interval can, i.e. the measured current generally undergoes certain fluctuations subject. However, it is not known from US Pat. No.
  • the method according to the invention is based on the knowledge that the current consumption of an electrically driven cutting tool is subject to fluctuations that due to the changing load on the cutting tool when cutting the material to be cut are caused. According to the invention, these are by the individual Cutting processes fluctuations in the drive motor of the cutting tool recorded current recorded, evaluated and as a measure of the amount of cut material to be used.
  • the cut hair is inside the Accumulate the shaving head and impair the function of the device over time can be cleaned from time to time. According to a training of the Invention is therefore after reaching a certain reference value for the amount of cut material activated a display device that the user on the Informed need for cleaning.
  • the first step of the method according to the invention is to detect the fluctuations in the current which is taken up by the drive motor of the shaving apparatus, ie to generate a corresponding measurement signal. This is done by a sensor, for example a resistor in the motor circuit, from which voltage fluctuations proportional to the current fluctuations are tapped. However, the current fluctuations can also be detected by inductive or other components.
  • the second step of the method according to the invention consists of filtering the measurement signal. As a result, of the fluctuations detected, all those are filtered out whose frequency does not lie within a specific frequency range. This can be done, for example, by a low-pass filter that suppresses higher-frequency interference pulses originating from the motor.
  • the third step of the method according to the invention consists of evaluating the pulses. In the two simplest cases, this is done by counting the number or adding up the length of the pulses. An integration of the impulses is more precise.
  • the fourth step of the method according to the invention consists of comparing the count value, the total length, or the integrated area of the pulses with a reference value that corresponds to a certain amount of material to be cut. The reaching or exceeding of the reference value is then displayed. This can be done in a manner known per se by means of an optical, acoustic or other display. If necessary, intermediate steps, such as the amplification of the measurement signal and / or the pulses, are also inserted.
  • a circuit arrangement for carrying out the method according to the invention is shown in shown in the drawing.
  • This circuit arrangement is very general for evaluation of current fluctuations, and therefore not only for cutting tools usable. Further configurations are described in the description.
  • the circuit arrangement contains a sensor, a filter circuit, an evaluation circuit and a Display device.
  • the sensor consists of a measuring resistor R1, which is in the circuit of a is switched on / off switchable DC motor M via a switch S1 is powered by a two-cell battery AC1, AC2.
  • the measuring resistor is part of a voltage divider consisting of three resistors R1, R2, R6 on which the voltage of the accumulator is present. This also serves to power the Filter circuit, evaluation circuit and the display device. In other versions a battery or a power supply unit serves as a power supply.
  • the filter circuit consists of an active bandpass filter, which is a first low-pass filter R3 / C1 with a first cut-off frequency and a second low-pass filter R4 / C2 with a second limit frequency and an operational amplifier A contains.
  • the second low pass filter R4 / C2 is between the connection point of the measuring resistor R1 with the next resistor R2 of the voltage divider and the non-inverting input of the Operational amplifier A, and the first low-pass filter R3 / C1 between the connection point the next resistor R2 with the third resistor R6 of the voltage divider and the inverting input of operational amplifier A is switched.
  • the output of the operational amplifier A is with the evaluation circuit IC and via a Resistor R5 connected to the positive pole of the accumulator.
  • the evaluation circuit consists of a microcontroller IC to which the display device D is connected. This has several segments that are used to display the Degree of contamination of the shaving head and the state of charge of the battery from Microcontroller IC can be controlled individually. The state of charge is shown in the the example shown in 20% increments.
  • the clogging indicator also by means of a light emitting diode, an electroacoustic transducer or the like.
  • the microcontroller IC is connected to a device through which the count value and thus the contamination indicator are reset to zero can. This can be a switch S2, for example, which switches on in a manner known per se Shaving head is arranged, so that when the shaving head is removed, the reset automatically he follows.
  • the first low-pass filter R3 / C1 serves to suppress interference signals, which in particular are caused by the commutator of the DC motor M. It has one higher cut-off frequency than the second low-pass filter R4 / C2.
  • the bandpass characteristic of the Filter circuit results from the fact that a low-pass filter on the inverting Input and the other to the non-inverting input of the operational amplifier A is connected.
  • the resistance R6 of the voltage divider creates an amplitude threshold fixed for the measurement signal, so that only signals with a certain Minimum size can be filtered and evaluated.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

The invention is directed to a method and a circuit arrangement for determining the quantity of the material cut by an electrically powered cutting tool. According to the present invention, the fluctuations of the current consumed by a drive motor are detected, filtered and evaluated. By a comparison with a reference value, it is possible to determine the soiling of the cutting tool with cut residues. The invention is particularly suitable for use in shaving apparatus.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Bestimmung der Menge des von einem elektrisch angetriebenen Schneidwerkzeug geschnittenen Schneidguts sowie ein Haarschneidegerät mit einer Schaltungsanordnung zur Durchführung des Verfahrens. Das erfindungsgemäße Verfahren ist für Schneidwerkzeuge geeignet, mit denen Schneidgut in einer Mehrzahl von einzelnen Schneidvorgängen geschnitten wird, und insbesondere für solche gedacht, deren Funktion nach einer gewissen Betriebszeit durch das geschnittene Schneidgut beeinträchtigt wird. Bevorzugte Anwendung findet dieses Verfahren beispielsweise zur Messung und Anzeige des Verschmutzungsgrads eines elektrisch angetriebenen Rasierapparats, Bartschneiders oder dgl..The present invention relates to a method for determining the amount of an electrically driven cutting tool cut material and a Hair clipper with a circuit arrangement for performing the method. The The method according to the invention is suitable for cutting tools with which material to be cut is cut in a plurality of individual cutting operations, and in particular intended for those whose function is cut after a certain period of operation Cuttings are affected. This method is preferred for example to measure and display the degree of pollution of an electrical powered shaver, beard trimmer or the like ..

Aus der US-A-5,111,580 ist es bekannt, als Maß für die Verschmutzung eines Rasierapparats die Anzahl der Rasuren zu zählen. Ferner ist bereits ein Verfahren bekannt, bei dem abhängig von der Betriebszeit die Notwendigkeit einer Reinigung des Rasierapparats angezeigt wird. Da je nach Stärke des Bartwuchses etc. und den Rasiergewohnheiten des jeweiligen Benutzers sich während einer vorgegebenen Zeit oder Anzahl von Rasuren unterschiedliche Mengen von Rasierstaub im Scherkopf ansammeln, kann mit derartigen Verfahren der Zeitpunkt für die Notwendigkeit einer Reinigung nur relativ ungenau angegeben werden.From US-A-5,111,580 it is known as a measure of the contamination of a razor count the number of shaves. Furthermore, a method is already known for depending on the operating time, the need to clean the shaver is shown. Depending on the strength of the beard growth etc. and the shaving habits each user during a given time or number of shaves Different amounts of shaving dust can accumulate in the shaving head The timing of the need for cleaning is only relatively imprecise can be specified.

Weiterhin ist es aus der JP-A-02-241480 bekannt, mittels einer Lichtschranke die Menge des angesammelten Rasierstaubs im Scherkopf zu messen und nach Überschreiten eines Schwellwerts einen Hinweis auf die erforderliche Reinigung auszugeben.Furthermore, it is known from JP-A-02-241480, by means of a light barrier Measure the amount of accumulated shaving dust in the shaving head and after exceeding it of a threshold value to indicate the need for cleaning.

Aus der DE-A-19606719 ist ein Verfahren bekannt, bei dem durch die Auswertung der von wenigstens einem bewegbaren Untermesser oder Obermesser eines Scherkopfs eines Rasierapparats ausgehenden Geräusche deren Verschmutzung bestimmt, und erforderlichenfalls dem Benutzer ein entsprechender Reinigungshinweis gegeben wird.From DE-A-19606719 a method is known in which by evaluating the of at least one movable lower knife or upper knife of a shaving head Noise emanating from a razor determines their pollution, and if necessary, the user is given an appropriate cleaning instruction.

Ein Rasierapparat, dessen Verschmutzungsgrad nach einem der beiden letztgenannten Verfahren bestimmt wird, enthält im Scherkopf notwendigerweise entsprechende Meßeinrichtungen. Dadurch erhöht sich gegenüber einem Rasierapparat ohne Verschmutzungsanzeige der konstruktive Aufwand beträchtlich. A razor, the degree of pollution according to one of the latter two Process is determined, necessarily contains appropriate in the shaving head Measuring devices. This increases compared to a shaver without a contamination indicator the design effort is considerable.

Aus der US 5,274,735 ist ein Rasierapparat mit einer Verschmutzungsanzeige bekannt, bei dem eine Messung des vom Rasierermotor aufgenommenen Stroms durch einen Mikrocomputer erfolgt, dem entweder dem Strom oder Stromspitzen proportionale Spannungswerte in digitaler Form zugeführt werden. Wegen der A/D-Wandlung wird jeweils entweder die momentane Größe des Stroms innerhalb der Abtastintervalle (Fig. 1 der US 5,274,735) oder der Spitzenwert des Stroms innerhalb der Intervalle (Fig. 2 der US 5,274,735) gemessen, die natürlich von Intervall zu Intervall unterschiedlich sein können, d.h. der gemessene Strom wird im Allgemeinen gewissen Schwankungen unterliegen. Aus der US 5,274,735 ist aber nicht bekannt, die Schwankungen des Stroms als Maß für die Größe der Verschmutzung heranzuziehen, sondern die US 5,274,735 offenbart lediglich, den gemessenen Strom (der sich aus einem Gleich-UND einem Wechselstromanteil zusammensetzt) mit einem Schwellwert zu vergleichen. Ist der gemessene Strom größer als der Schwellwert, wird eine Anzeige für die Notwendigkeit einer Reinigung aktiviert.From US 5,274,735 a shaver with a clogging indicator is known, in which a measurement of the current drawn by the razor motor by a Microcomputer is done, which is either proportional to the current or current peaks Voltage values are supplied in digital form. Because of the A / D conversion either the current magnitude of the current within the sampling intervals (Fig. 1 of US 5,274,735) or the peak value of the current within the intervals (FIG. 2 of US 5,274,735) measured, which of course differ from interval to interval can, i.e. the measured current generally undergoes certain fluctuations subject. However, it is not known from US Pat. No. 5,274,735 that the fluctuations in the Electricity as a measure of the size of the pollution, but the US 5,274,735 only discloses the measured current (which results from a DC AND an AC component) with a threshold value. If the measured current is greater than the threshold value, an indication of the need will appear cleaning activated.

Es ist sehr zu bezweifeln, daß die aus der US 5,274,735 bekannte Methode zur Bestimmung des Verschmutzungsgrads eines Rasierers eine zuverlässige Anzeige für den Verschmutzungsgrad des Scherkopfs liefern kann. Die US 5,274,735 lehrt zwar, den vom Rasierermotor aufgenommenen Strom unmittelbar nach dem Einschalten des Rasierers bei einer Drehzahl von 6000 U/min zu messen, damit der vom jeweiligen Benutzer abhängige Druck, mit dem der Rasierer auf die Haut gepreßt wird, das Meßergebnis nicht verfälschen kann, vgl. US 5,274,735, Spalte 8, Zeilen 37-42. Tatsächlich ist aber die Größe des Motorstroms hauptsächlich von der Reibung der Scherteile untereinander abhängig und nicht von der Menge des innerhalb des Scherkopfs angesammelten Bartstaubs. Beispielsweise ist die Reibung zwischen Obermesser und Untermesser bei einem gereinigten und (dadurch) entölten Scherkopf viel höher als bei einem ungereinigten, beispielsweise durch Hautfett geschmierten Scherkopf.It is very doubtful that the method for determination known from US 5,274,735 the level of contamination of a razor a reliable indicator for the Degree of contamination of the shaving head can deliver. US 5,274,735 teaches that current consumed by the razor motor immediately after switching on the To measure the shaver at a speed of 6000 rpm, so that of the respective User-dependent pressure with which the razor is pressed onto the skin, the measurement result cannot falsify, cf. US 5,274,735, column 8, lines 37-42. Indeed but the size of the motor current is mainly due to the friction of the shear parts dependent on each other and not on the amount accumulated within the shaving head Bart dust. For example, the friction between the upper knife and lower knife with a cleaned and (thus) de-oiled shaving head much higher than with one uncleaned shaving head, for example lubricated by skin oil.

Es ist daher Aufgabe der vorliegenden Erfindung ein Verfahren zur Bestimmung der Menge des von einem elektrisch angetriebenen Schneidwerkzeug geschnittenen Schneidguts anzugeben, das ohne Eingriff in die Konstruktion des Schneidwerkzeugs realisierbar ist, und eine sehr genaue Mengenmessung ermöglicht. Insbesondere ist es Aufgabe der Erfindung, ein Verfahren zur Bestimmung und Anzeige des Verschmutzungsgrads eines elektrisch angetriebenen Schneidwerkzeugs anzugeben. Ferner ist es Aufgabe der Erfindung, ein Schneidwerkzeug mit einer Schaltungsanordnung zur Durchführung des erfindungsgemäßen Verfahrens anzugeben.It is therefore an object of the present invention a method for determining the Amount of cut by an electrically powered cutting tool Specify cutting material without interfering with the design of the cutting tool is feasible, and enables a very precise quantity measurement. In particular it is Object of the invention, a method for determining and displaying the degree of contamination to specify an electrically driven cutting tool. Furthermore, it is Object of the invention, a cutting tool with a circuit arrangement for implementation to specify the method according to the invention.

Das erfindungsgemäße Verfahren beruht auf der Erkenntnis, daß die Stromaufnahme eines elektrisch angetriebenen Schneidwerkzeugs Schwankungen unterworfen ist, die durch die wechselnde Belastung des Schneidwerkzeugs beim Schneiden des Schneidguts hervorgerufen werden. Erfindungsgemäß werden diese durch die einzelnen Schneidvorgänge bedingten Schwankungen des vom Antriebsmotor des Schneidwerkzeugs aufgenommenen Stroms erfaßt, ausgewertet und als Maß für die Menge des geschnittenen Schneidguts verwendet.The method according to the invention is based on the knowledge that the current consumption of an electrically driven cutting tool is subject to fluctuations that due to the changing load on the cutting tool when cutting the material to be cut are caused. According to the invention, these are by the individual Cutting processes fluctuations in the drive motor of the cutting tool recorded current recorded, evaluated and as a measure of the amount of cut material to be used.

Bei der vorliegenden Erfindung wird nur der dem Gleichstrom überlagerte Wechselstromanteil (d.h. die Stromschwankungen) des Motorstroms ausgewertet, wogegen bei der US 5,274,735 die Größe des vom Rasierermotor aufgenommenen Stroms (nicht die Größe der Stromschwankungen !) gemessen und mit einem Schwellwert verglichen wird, vgl. US 5,274,735, Spalte 8, Zeile 25-29.In the present invention, only the AC component superimposed on the DC current (i.e. the current fluctuations) of the motor current are evaluated, whereas at US 5,274,735 the size of the current drawn by the razor motor (not the Size of the current fluctuations!) Measured and compared with a threshold value will, cf. US 5,274,735, column 8, lines 25-29.

Da beispielsweise bei einem Rasierapparat die geschnittenen Haare sich im Innern des Scherkopfs ansammeln und im Laufe der Zeit die Funktion des Geräts beeinträchtigen können, muß dieser von Zeit zu Zeit gereinigt werden. Gemäß einer Fortbildung der Erfindung wird daher nach Erreichen eines bestimmten Referenzwerts für die Menge des geschnittenen Schneidguts eine Anzeigeeinrichtung aktiviert, die den Benutzer über die Notwendigkeit einer Reinigung informiert.Because, for example, in a razor, the cut hair is inside the Accumulate the shaving head and impair the function of the device over time can be cleaned from time to time. According to a training of the Invention is therefore after reaching a certain reference value for the amount of cut material activated a display device that the user on the Informed need for cleaning.

Die Erfindung wird nachstehend anhand eines Rasierapparats als Ausführungsbeispiel erläutert. Die The invention is described below using a razor as an embodiment explained. The

Der erste Schritt des erfindungsgemäßen Verfahrens besteht darin, die Schwankungen des Stroms zu erfassen, der vom Antriebsmotor des Rasierapparats aufgenommen wird, d.h. ein entsprechendes Meßsignal zu erzeugen. Dies erfolgt durch einen Meßaufnehmer, beispielsweise einen im Motorstromkreis befindlichen Widerstand, an dem den Stromschwankungen proportionale Spannungsschwankungen abgegriffen werden. Die Stromschwankungen können jedoch auch durch induktive oder andere Bauelemente erfaßt werden.
Der zweite Schritt des erfindungsgemäßen Verfahrens besteht aus der Filterung des Meßsignals. Dadurch werden von den erfaßten Schwankungen alle die ausgefiltert, deren Frequenz nicht innerhalb eines bestimmten Frequenzbereichs liegt. Dies kann beispielsweise durch ein Tiefpaßfilter erfolgen, das vom Motor herrührende höherfrequente Störimpulse unterdrückt. Ferner müssen niederfrequente Schwankungen des Motorstroms, die beispielsweise durch eine schwankende Betriebsspannung hervorgerufen werden, unterdrückt werden. Außerdem werden vorzugsweise nur Schwankungen berücksichtigt, deren Amplitude einen voreinstellbaren Schwellwert übersteigt. Auf diese Weise werden aus dem Meßsignal nur für den Schneidvorgang charakteristische Impulse gewonnen.
Der dritte Schritt des erfindungsgemäßen Verfahrens besteht aus der Auswertung der Impulse. Dies erfolgt in den beiden einfachsten Fällen durch Zählen der Anzahl oder Aufsummieren der Länge der Impulse. Genauer ist eine Integration der Impulse.
Der vierte Schritt des erfindungsgemäßen Verfahrens besteht aus dem Vergleich des Zählwerts, der aufsummierten Länge, oder der aufintegrierten Fläche der Impulse mit einem Referenzwert, der einer bestimmten Menge an geschnittenem Schneidgut entspricht. Das Erreichen oder Überschreiten des Referenzwerts wird dann angezeigt. Dies kann in an sich bekannter Weise durch eine optische, akustische oder sonstige Anzeige erfolgen.
Erforderlichenfalls werden noch Zwischenschritte, wie beispielsweise die Verstärkung des Meßsignals und/oder der Impulse eingefügt.The first step of the method according to the invention is to detect the fluctuations in the current which is taken up by the drive motor of the shaving apparatus, ie to generate a corresponding measurement signal. This is done by a sensor, for example a resistor in the motor circuit, from which voltage fluctuations proportional to the current fluctuations are tapped. However, the current fluctuations can also be detected by inductive or other components.
The second step of the method according to the invention consists of filtering the measurement signal. As a result, of the fluctuations detected, all those are filtered out whose frequency does not lie within a specific frequency range. This can be done, for example, by a low-pass filter that suppresses higher-frequency interference pulses originating from the motor. Furthermore, low-frequency fluctuations in the motor current, which are caused, for example, by a fluctuating operating voltage, must be suppressed. In addition, only fluctuations whose amplitude exceeds a presettable threshold value are preferably taken into account. In this way, only characteristic pulses are obtained from the measurement signal for the cutting process.
The third step of the method according to the invention consists of evaluating the pulses. In the two simplest cases, this is done by counting the number or adding up the length of the pulses. An integration of the impulses is more precise.
The fourth step of the method according to the invention consists of comparing the count value, the total length, or the integrated area of the pulses with a reference value that corresponds to a certain amount of material to be cut. The reaching or exceeding of the reference value is then displayed. This can be done in a manner known per se by means of an optical, acoustic or other display.
If necessary, intermediate steps, such as the amplification of the measurement signal and / or the pulses, are also inserted.

Eine Schaltungsanordnung zur Durchführung des erfindungsgemäßen Verfahrens ist in der Zeichnung dargestellt. Diese Schaltungsanordnung ist ganz allgemein zur Auswertung von Stromschwankungen geeignet, und daher nicht nur bei Schneidwerkzeugen verwendbar. Weitere Ausgestaltungen sind in der Beschreibung beschrieben.A circuit arrangement for carrying out the method according to the invention is shown in shown in the drawing. This circuit arrangement is very general for evaluation of current fluctuations, and therefore not only for cutting tools usable. Further configurations are described in the description.

Wie in der einzigen Figur dargestellt ist, enthält die Schaltungsanordnung einen Meßaufnehmer, eine Filterschaltung, eine Auswerteschaltung und eine Anzeigevorrichtung.As shown in the single figure, the circuit arrangement contains a sensor, a filter circuit, an evaluation circuit and a Display device.

Der Meßaufnehmer besteht aus einem Meßwiderstand R1, der in den Stromkreis eines über einen Schalter S1 ein-/ausschaltbaren Gleichstrommotors M geschaltet ist, der durch einen zweizelligen Akkumulator AC1, AC2 mit Strom versorgt wird. Der Meßwiderstand ist Teil eines Spannungsteilers aus drei Widerständen R1, R2, R6, an dem die Spannung des Akkumulators anliegt. Dieser dient auch zur Stromversorgung der Filterschaltung, Auswerteschaltung und der Anzeigevorrichtung. Bei anderen Ausführungen dient eine Batterie oder ein Netzteil als Stromversorgung.The sensor consists of a measuring resistor R1, which is in the circuit of a is switched on / off switchable DC motor M via a switch S1 is powered by a two-cell battery AC1, AC2. The measuring resistor is part of a voltage divider consisting of three resistors R1, R2, R6 on which the voltage of the accumulator is present. This also serves to power the Filter circuit, evaluation circuit and the display device. In other versions a battery or a power supply unit serves as a power supply.

Die Filterschaltung besteht aus einem aktiven Bandpaßfilter, das ein erstes Tiefpaßfilter R3/C1 mit einer ersten Grenzfrequenz und ein zweites Tiefpaßfilter R4/C2 mit einer zweiten Grenzfrequenz sowie einen Operationsverstärker A enthält. Das zweite Tiefpaßfilter R4/C2 ist zwischen den Verbindungspunkt des Meßwiderstands R1 mit dem nächsten Widerstand R2 des Spannungsteilers und den nichtinvertierenden Eingang des Operationsverstärkers A, und das erste Tiefpaßfilter R3/C1 zwischen den Verbindungspunkt des nächsten Widerstands R2 mit dem dritten Widerstand R6 des Spannungsteilers und den invertierenden Eingang des Operationsverstärkers A geschaltet. Der Ausgang des Operationsverstärkers A ist mit der Auswerteschaltung IC und über einen Widerstand R5 mit dem Pluspol des Akkumulators verbunden.The filter circuit consists of an active bandpass filter, which is a first low-pass filter R3 / C1 with a first cut-off frequency and a second low-pass filter R4 / C2 with a second limit frequency and an operational amplifier A contains. The second low pass filter R4 / C2 is between the connection point of the measuring resistor R1 with the next resistor R2 of the voltage divider and the non-inverting input of the Operational amplifier A, and the first low-pass filter R3 / C1 between the connection point the next resistor R2 with the third resistor R6 of the voltage divider and the inverting input of operational amplifier A is switched. The The output of the operational amplifier A is with the evaluation circuit IC and via a Resistor R5 connected to the positive pole of the accumulator.

Die Auswerteschaltung besteht aus einem Mikrokontroller IC, an den die Anzeigevorrichtung D angeschlossen ist. Diese besitzt mehrere Segmente, die zur Anzeige des Verschmutzungsgrads des Scherkopfs und des Ladezustands des Akkumulators vom Mikrokontroller IC einzeln angesteuert werden können. Der Ladezustand wird in dem in der Figur dargestellten Beispiel in 20%-Schritten angezeigt. Natürlich kann die Verschmutzungsanzeige auch durch eine Leuchtdiode, einen elektroakustischen Wandler oder dgl. erfolgen. Der Mikrokontroller IC ist mit einer Vorrichtung verbunden, durch die der Zählwert und damit die Verschmutzungsanzeige auf Null zurückgesetzt werden kann. Dies kann beispielsweise ein Schalter S2 sein, der in an sich bekannter Weise am Scherkopf angeordnet ist, sodaß bei Abnahme des Scherkopfs automatisch das Zurücksetzen erfolgt.The evaluation circuit consists of a microcontroller IC to which the display device D is connected. This has several segments that are used to display the Degree of contamination of the shaving head and the state of charge of the battery from Microcontroller IC can be controlled individually. The state of charge is shown in the the example shown in 20% increments. Of course, the clogging indicator also by means of a light emitting diode, an electroacoustic transducer or the like. The microcontroller IC is connected to a device through which the count value and thus the contamination indicator are reset to zero can. This can be a switch S2, for example, which switches on in a manner known per se Shaving head is arranged, so that when the shaving head is removed, the reset automatically he follows.

Das erste Tiefpaßfilter R3/C1 dient zur Unterdrückung von Störsignalen, die insbesondere vom Kommutator des Gleichstrommotors M hervorgerufen werden. Es besitzt eine höhere Grenzfrequenz als das zweite Tiefpaßfilter R4/C2. Die Bandpaßcharakteristik der Filterschaltung ergibt sich dadurch, daß das eine Tiefpaßfilter an den invertierenden Eingang und das andere an den nichtinvertierenden Eingang des Operationsverstärkers A angeschlossen ist. Durch den Widerstand R6 des Spannungsteilers wird ein Amplitudenschwellwert für das Meßsignal festgelegt, sodaß nur Signale mit einer bestimmten Mindestgröße gefiltert und ausgewertet werden.The first low-pass filter R3 / C1 serves to suppress interference signals, which in particular are caused by the commutator of the DC motor M. It has one higher cut-off frequency than the second low-pass filter R4 / C2. The bandpass characteristic of the Filter circuit results from the fact that a low-pass filter on the inverting Input and the other to the non-inverting input of the operational amplifier A is connected. The resistance R6 of the voltage divider creates an amplitude threshold fixed for the measurement signal, so that only signals with a certain Minimum size can be filtered and evaluated.

Bei einer anderen Ausführung der Schaltungsanordnung ist die Filterschaltung in den Mikrokontroller integriert.In another version of the circuit arrangement Filter circuit integrated in the microcontroller.

Zur Unterdrückung hochfrequenter Störungen kann zwischen die Eingänge des Operationsverstärkers A ein Kondensator geschaltet sein.To suppress high-frequency interference, you can use the inputs of the operational amplifier A be connected to a capacitor.

Claims (16)

  1. A method of determining the quantity of the material cut by an electrically powered cutting tool, in which the fluctuations of the current consumed by the drive mechanism of the cutting tool during the cutting operation are detected,
    characterized in that the fluctuations of the current are evaluated for determining the quantity of the cut material.
  2. The method as claimed in claim 1,
    characterized in that the current fluctuations are converted into voltage fluctuations or the like.
  3. The method as claimed in claim 1 or 2,
    characterized in that from the fluctuations detected all those are filtered whose frequency is outside a specific frequency range so that only pulses that are characteristic of the cutting operation are evaluated.
  4. The method as claimed in claim 3,
    characterized in that the evaluation of pulses includes performing a count of the number of pulses.
  5. The method as claimed in claim 3,
    characterized in that the evaluation of pulses includes performing a total of the length of the pulses.
  6. The method as claimed in claim 3,
    characterized in that the evaluation of pulses includes performing an integration of the pulses.
  7. The method as claimed in any one of the preceding claims,
    characterized in that only such pulses are evaluated whose amplitude exceeds a predetermined threshold value.
  8. Use of the method according to any one of the preceding claims for determining and indicating the degree of soiling of a cutting tool, particularly a shaving apparatus, beard trimmer or the like,
    characterized in that an indicating device alerting the user to the need for cleaning is activated when the quantity of the cut material reaches a predetermined threshold value.
  9. An electrically powered hair cutting apparatus, in particular a shaving apparatus or beard trimmer,
    characterized in that it includes a circuit arrangement for implementing the method according to any one of the preceding claims, said circuit arrangement including a detecting element for generating a measuring signal for the current consumed by the drive mechanism of the cutting tool, a device for filtering the measuring signal, and a device for evaluating the filtered measuring signal.
  10. The hair cutting apparatus as claimed in claim 9,
    characterized in that the detecting element is comprised of a resistor (R1).
  11. The hair cutting apparatus as claimed in claim 9 or 10,
    characterized in that the filter device comprises at least one low-pass filter or a band-pass filter.
  12. The hair cutting apparatus as claimed in claim 11,
    characterized in that the band-pass filter includes a first low-pass filter (R3/C1) with a first cut-off frequency and a second low-pass filter (R4/C2) with a second cut-off frequency as well as an operational amplifier (A), and that the one low-pass filter is connected to the inverting input while the other low-pass filter is connected to the non-inverting input of the operational amplifier (A).
  13. The hair cutting apparatus as claimed in any one of the claims 9 to 12,
    characterized in that the device for evaluating the filtered measuring signal comprises a microcontroller (IC).
  14. The hair cutting apparatus as claimed in claim 13,
    characterized in that it includes a device (D) indicating the degree of soiling which is selectable by the microcontroller (IC).
  15. The hair cutting apparatus as claimed in claim 13 or 14,
    characterized in that it includes a device (S2) for resetting the soiling indication which is connected to the microcontroller (IC).
  16. The hair cutting apparatus as claimed in any one of the claims 9 to 15,
    characterized in that it includes a device for setting a threshold value (R6) for the measuring signal.
EP98114058A 1997-10-04 1998-07-28 Method for determining the quantity of the cutting material cut by an electrically driven cutting tool and hair cutting tool with means for the execution of the method Expired - Lifetime EP0908278B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19743853 1997-10-04
DE19743853A DE19743853C1 (en) 1997-10-04 1997-10-04 Method of determining amount of material cut by electrically powered cutting tool esp. saving apparatus

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EP0908278A2 EP0908278A2 (en) 1999-04-14
EP0908278A3 EP0908278A3 (en) 1999-09-15
EP0908278B1 true EP0908278B1 (en) 2003-03-19

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EP98114058A Expired - Lifetime EP0908278B1 (en) 1997-10-04 1998-07-28 Method for determining the quantity of the cutting material cut by an electrically driven cutting tool and hair cutting tool with means for the execution of the method

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US (1) US6072399A (en)
EP (1) EP0908278B1 (en)
JP (1) JP4141546B2 (en)
KR (1) KR100582874B1 (en)
CN (1) CN1280072C (en)
AT (1) ATE234709T1 (en)
DE (2) DE19743853C1 (en)
DK (1) DK0908278T3 (en)
ES (1) ES2196434T3 (en)
HK (1) HK1017302A1 (en)
RU (1) RU2214906C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8627573B2 (en) * 2002-10-05 2014-01-14 Braun Gmbh Hair-removing device
DE102006038126A1 (en) 2006-08-14 2008-02-21 Braun Gmbh Method for determining the contamination of an electrically driven cutting tool and hair clipper
EP1952956A1 (en) * 2007-02-02 2008-08-06 Müller Martini Holding AG Device for cutting printed products fed in an overlapping formation
BR112016029538B1 (en) * 2014-06-20 2021-01-26 Koninklijke Philips N.V. electric shaver or shaver
US10946539B2 (en) 2016-12-01 2021-03-16 Koninklijke Philips N.V. Hair cutting apparatus comprising a light indicator
EP3548231B1 (en) * 2016-12-01 2021-01-20 Koninklijke Philips N.V. Hair cutting apparatus comprising a current detector
CN109895147B (en) * 2019-03-08 2021-05-11 美国华尔推剪公司 Rotating speed control device of electric hair cutter and control method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534464C1 (en) * 1995-09-16 1996-12-05 Rowenta Werke Gmbh Device preventing dryout of electromagnetic oscillating-piston pump

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846688A (en) * 1973-07-18 1974-11-05 Electron Inc Machine work sensor
DE2517001A1 (en) * 1975-04-17 1976-10-21 Buderus Eisenwerk METHOD AND DEVICE FOR CONTROLLING THE FEED OF A GRINDING WHEEL
DE2658477A1 (en) * 1976-12-23 1978-06-29 Teldix Gmbh DEVICE FOR MONITORING INQUALITIES AND / OR STRUCTURAL CHANGES IN THE THREAD OF AN OE SPINNING TURBINE
DE2755647A1 (en) * 1977-12-14 1979-06-28 Teldix Gmbh DEVICE FOR MONITORING THE THREAD OF AN OE SPINNING TURBINE
JP2936139B2 (en) * 1989-03-15 1999-08-23 九州日立マクセル株式会社 Electrical equipment
NL8903065A (en) * 1989-12-14 1991-07-01 Philips Nv ELECTRIC RAZOR.
JPH04314487A (en) * 1991-04-15 1992-11-05 Matsushita Electric Works Ltd Electric razor
US5274735A (en) * 1991-12-16 1993-12-28 Sanyo Electric Co., Ltd. Electric shaver
AT403958B (en) * 1992-02-17 1998-07-27 Payer Lux Elektroprod ELECTRIC SHAVER
DE19606719C2 (en) * 1996-02-23 1997-12-11 Braun Ag Method for determining the contamination of a shaver and device for carrying out the method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534464C1 (en) * 1995-09-16 1996-12-05 Rowenta Werke Gmbh Device preventing dryout of electromagnetic oscillating-piston pump

Also Published As

Publication number Publication date
CN1213600A (en) 1999-04-14
US6072399A (en) 2000-06-06
RU2214906C2 (en) 2003-10-27
EP0908278A2 (en) 1999-04-14
JPH11165298A (en) 1999-06-22
HK1017302A1 (en) 1999-11-19
DE19743853C1 (en) 1998-11-26
EP0908278A3 (en) 1999-09-15
DK0908278T3 (en) 2003-06-23
KR19990036630A (en) 1999-05-25
ATE234709T1 (en) 2003-04-15
JP4141546B2 (en) 2008-08-27
KR100582874B1 (en) 2006-09-27
CN1280072C (en) 2006-10-18
DE59807528D1 (en) 2003-04-24
ES2196434T3 (en) 2003-12-16

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