EP2834567B1 - Hob and method for controlling a hob - Google Patents

Hob and method for controlling a hob Download PDF

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Publication number
EP2834567B1
EP2834567B1 EP13717205.2A EP13717205A EP2834567B1 EP 2834567 B1 EP2834567 B1 EP 2834567B1 EP 13717205 A EP13717205 A EP 13717205A EP 2834567 B1 EP2834567 B1 EP 2834567B1
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EP
European Patent Office
Prior art keywords
hob
radio link
control commands
release
multimedia device
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Active
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EP13717205.2A
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German (de)
French (fr)
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EP2834567A1 (en
Inventor
Wolfgang Beifuss
Uwe Has
Matthias Sippel
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP2834567A1 publication Critical patent/EP2834567A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/90—Additional features
    • G08C2201/93—Remote control using other portable devices, e.g. mobile phone, PDA, laptop

Definitions

  • the present invention relates to a hob according to the preamble of patent claim 1 and a method for controlling a hob according to the preamble of claim 3.
  • a household appliance for preparing food with a communication interface is known. This enables wireless communication with a unit external to the household appliance.
  • the communication interface is designed as a short-range communication interface for radio signals.
  • the EP 2 385 311 A2 discloses an operating part for a household workstation which has at least one display unit and at least one operating unit.
  • the control panel can be placed on the household workstation for its operation and can thus be coupled to the household workstation in a transformer. It also has a wireless first data interface for communication with the household workstation.
  • the induction heating plate can be operated with the smartphone.
  • the controller contains at least one power switching device and furthermore has a control unit which is separate from the electrical device and which is connected to the electrical device in a wireless signal-transmitting manner.
  • the DE 20 2011 050 585 U1 discloses a cooking appliance, on the housing of which a tablet PC or a smartphone can be detachably attached.
  • the invention is based on the object of improving the stated prior art.
  • the hob has a second communication interface which is designed to communicate with the multimedia device via a second radio link.
  • the two radio links are designed differently from one another in that they operate in different frequency bands and use different transmission protocols.
  • a portable multimedia device such as. B. a smartphone or a tablet PC is a comfortable operation of the hob by z. B. large touch buttons and / or a high-resolution, color screen achieved.
  • the use of two independent radio links enables safe operation. This applies in particular when one radio link is used to transmit the control commands and the other radio link is used to confirm that a user of the multimedia device is in the vicinity of the hob.
  • the control commands are transmitted, for example, via a standardized WLAN or WIFI radio network.
  • the first communication interface is designed to receive control commands via a wireless network in the form of a WLAN network.
  • a wireless network in the form of a WLAN network.
  • the data exchange between the hob and the multimedia device via the first radio link is preferably designed to be bidirectional, so that the multimedia device can also receive data from the hob in addition to sending control commands.
  • the hob with individual heating zones can be represented tangibly on the multimedia device, with the heating outputs set being displayed assigned to the heating zones. Additional values such as remaining cooking times, current temperatures or energy consumption can also be displayed in a graphically appealing way.
  • control commands can be transmitted to the hob without prior authorization and are stored there until they are released or until they are deleted.
  • control commands from a greater distance from e.g. B. can be transferred to the hob via a smartphone or tablet PC.
  • the control commands in the hob are only implemented when they have been released via the second radio link.
  • the multimedia device is in close proximity or within sight of the hob. In order to enter or transmit the control commands through a multimedia device, however, it is not necessary for a user of the hob to be in its immediate vicinity.
  • NFC near field communication
  • the NFC radio link is designed to communicate over a maximum distance of 30 cm, in particular 15 cm. This enables very safe operation of the hob by radio transmission, since the short range of the second radio link ensures that a user of the hob is in its immediate vicinity if data is transmitted successfully via this radio link. A particularly safe, supervised operation within sight of the hob is therefore given. In the case of larger ranges, e.g. through a Bluetooth connection, a user of the hob could be out of sight of the hob (e.g. behind a wall) and still control the hob. Safe operation would not be guaranteed, especially since he could theoretically accidentally activate the hob without being aware of it.
  • the invention relates to a method for controlling the hob according to the characterizing part of claim 3, wherein the control commands are transmitted via a WLAN connection and prior to the implementation of the control commands transmitted by the WLAN connection in the hob, a release is required for this is obtained via a second radio link between the multimedia device and the hob and the release is given by data exchange via an NFC radio link and the control commands can be transmitted to the hob without prior release and are stored there until they are released, or until they are deleted.
  • a corresponding connection establishment via the second radio link for release can be initiated from the hob or the multimedia device.
  • the range of the second radio link for obtaining the release is limited.
  • Such a range can be, for example, less than 30 cm, in particular less than 15 cm. This ensures that the hob is consciously operated by the multimedia device.
  • a release that has taken place preferably remains valid for a limited period of time, even if no more signals are transmitted via the second radio link.
  • a valid release can be stored in the hob and / or in the multimedia device. Operation of the hob by a user becomes more convenient due to the longer validity of the release, since the user first brings the portable multimedia device close to the hob to obtain a release, but can then move away from the hob again to enter the control commands. The input of the control commands can therefore be made from a location from which z. B. the display of the multimedia device is easier to read, or which is further away from the hot cooking vapors of the hob. Nevertheless, there is a conscious operation of the hob, since a user of the hob must first move into its immediate area.
  • the period is limited to a value shorter than 5 minutes, in particular shorter than 3 minutes. This on the one hand gives sufficient time to enter control commands and transmit them to the hob, and on the other hand prevents a user of the hob from moving too far away from it.
  • active RFID radio frequency identification
  • active RFID technology is understood to mean bidirectional data transmission using an active transponder (with its own power supply) and a reader, in which both devices can actively transmit.
  • control commands are generated indirectly by a user of the hob via the selection of a dish to be cooked on the multimedia device.
  • a user of the hob selects a dish to be cooked from a list, for example, and then the occupancy of different heating zones of the hob with suitable cooking vessels and their contents are displayed or listed.
  • the corresponding control commands for the different heating zones and their operating modes are transmitted together over the first radio link.
  • a digital cookbook can thus be equipped with appropriate control data for the hob, for example.
  • FIG Fig. 1 A hob with a glass ceramic plate 2 on which four heating zones 4, 6, 8, 10 are arranged is shown in FIG Fig. 1 shown.
  • the hob also has an operating unit 12 by means of which the hob can be controlled via touch sensor keys and digital displays that are operatively connected to them.
  • the hob has a first communication interface 14 and a second communication interface 16 which is independent therefrom and which are each arranged under the glass ceramic plate 2.
  • the two communication interfaces 14, 16 are designed to each communicate with a multimedia device 18.
  • the first communication interface 14 communicates with the multimedia device 18 via a first radio link 20.
  • the second communication interface 16 communicates with the multimedia device 18 via a second radio link 22.
  • the first radio link 20 is designed as a WLAN or WIFI wireless network.
  • the second radio link 22 is designed as an NFC radio link and works in the frequency range of 13.5 MHz using active RFID technology. While the range of the first radio link can be up to 100 m, the range of the second radio link is only up to 10 cm.
  • the multimedia device 18 is designed as a smartphone and has a program for generating control data for the hob.
  • a flow chart for controlling the hob by smartphone 18 is corresponding in an exemplary embodiment not according to the invention Fig. 2 shown.
  • the transmission of the control commands is started with the process step S0a.
  • a direct input is understood to mean, for example, the specific input of the power level of one of the heating zones 4, 6, 8, 10.
  • Indirect input is understood to mean, for example, the input of control commands by selecting a dish to be cooked or by selecting an automatic program for one or more of the heating zones 4, 6, 8, 10.
  • the smartphone 18 attempts to establish an NFC connection to the hob via the second radio link 22.
  • connection setup is unsuccessful, the program branches back to process step S1a in process step S2a.
  • a new connection is attempted.
  • the smartphone 18 fetches one in process step S3a Release to transfer the control data to the hob.
  • the multimedia device then establishes a WLAN connection to the hob in step S4a.
  • a timer to limit the release time is started in step S5a.
  • Process step S6a checks the validity of the release and, if it detects an expired release, returns the program to process step S1a.
  • a user of the hob can operate the hob via the smartphone 18 in accordance with sequence step S7a, which can send control commands to the hob during the period of the release, which are then implemented immediately.
  • the hob can be operated directly using the smartphone 18 as long as there is a release for this or as long as the smartphone 18 is within the NFC range.
  • step S0b smartphone 18 establishes a WLAN connection to the hob in process step S1b.
  • step S2b the settings made on the smartphone 18 or the corresponding control commands are sent to the hob.
  • step S3b the smartphone 18 attempts to establish an NFC radio connection to the hob in order to enable the transmitted control commands.
  • step S4b it is checked whether an NFC connection has been established. If this is the case, then in step S5b the inputs made on the smartphone 18 or the control commands are confirmed or released via NFC connection and their implementation in the hob is started.
  • step S4b If no NFC connection can be determined in step S4b, the program jumps back to step S3b. After the inputs or the control commands have been released in process step S5b, a check is made in process step S6b to determine whether the NFC connection still exists. If this is not the case, the program is continued with step S1b. If there is still an NFC connection, the program continues with process step S7b, the hob being operated directly via the smartphone 18.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Telephone Function (AREA)
  • Selective Calling Equipment (AREA)

Description

Die vorliegende Erfindung betrifft ein Kochfeld gemäß dem Oberbegriff des Patentanspruchs 1, sowie ein Verfahren zur Steuerung eines Kochfeldes gemäß dem Oberbegriff des Patentanspruchs 3.The present invention relates to a hob according to the preamble of patent claim 1 and a method for controlling a hob according to the preamble of claim 3.

Aus der WO 2012/019886 A2 ist ein Hausgerät zum Zubereiten von Lebensmitteln mit einer Kommunikationsschnittstelle bekannt. Diese ermöglicht eine drahtlose Kommunikation mit einer hausgeräteexternen Einheit. Die Kommunikationsschnittstelle ist als eine Kurzstrecken-Kommunikationsschnittstelle für Funksignale ausgebildet.From the WO 2012/019886 A2 a household appliance for preparing food with a communication interface is known. This enables wireless communication with a unit external to the household appliance. The communication interface is designed as a short-range communication interface for radio signals.

Die EP 2 385 311 A2 offenbart ein Bedienteil für eine Haushaltsarbeitsstation, welches mindestens eine Anzeigeeinheit und mindestens eine Bedieneinheit aufweist. Das Bedienteil ist zu seinem Betrieb auf die Haushaltsarbeitsstation aufsetzbar und dadurch mit der Haushaltsarbeitsstation transformatorisch koppelbar. Ferner weist es eine drahtlose erste Datenschnittstelle zur Kommunikation mit der Haushaltsarbeitsstation auf.The EP 2 385 311 A2 discloses an operating part for a household workstation which has at least one display unit and at least one operating unit. The control panel can be placed on the household workstation for its operation and can thus be coupled to the household workstation in a transformer. It also has a wireless first data interface for communication with the household workstation.

Aus der SE 1100 399 A1 ist eine Methode zum Steuern einer Heizplatte, sowie eine mobile Induktionsheizplatte bekannt. Die Induktionsheizplatte ist dabei mit dem Smartphone bedienbar.From the SE 1100 399 A1 a method for controlling a heating plate and a mobile induction heating plate are known. The induction heating plate can be operated with the smartphone.

Aus der DE 198 49 075 A1 ist eine Steuerung für ein Elektrogerät mit wenigstens einer in dem Elektrogerät enthaltenen elektrischen Funktionseinrichtung bekannt. Die Steuerung enthält wenigstens eine Leistungsschalteinrichtung und weist ferner eine von dem Elektrogerät separate Steuereinheit auf, die drahtlos signalübertragend mit dem Elektrogerät verbunden ist.From the DE 198 49 075 A1 a control for an electrical device with at least one electrical functional device contained in the electrical device is known. The controller contains at least one power switching device and furthermore has a control unit which is separate from the electrical device and which is connected to the electrical device in a wireless signal-transmitting manner.

Die DE 20 2011 050 585 U1 offenbart ein Gargerät, an dessen Gehäuse ein Tablet-PC oder ein Smartphone lösbar anbringbar ist.The DE 20 2011 050 585 U1 discloses a cooking appliance, on the housing of which a tablet PC or a smartphone can be detachably attached.

Der Erfindung liegt die Aufgabe zugrunde, den genannten Stand der Technik zu verbessern.The invention is based on the object of improving the stated prior art.

Diese Aufgabe wird durch ein Kochfeld mit den Merkmalen des Patentanspruchs 1 gelöst. Des Weiteren wird die Aufgabe durch ein Verfahren, welches die Merkmale des Patentanspruchs 3 aufweist, gelöst. Vorteilhafte Ausgestaltungen sind den Unteransprüchen einzeln oder in Kombination zu entnehmen.This object is achieved by a hob with the features of claim 1. Furthermore, the object is achieved by a method which has the features of claim 3. Advantageous refinements can be found in the dependent claims individually or in combination.

Das Kochfeld weist eine zweite Kommunikationsschnittstelle auf, die dazu ausgebildet ist, mit dem Multimediagerät über eine zweite Funkstrecke zu kommunizieren. Dabei sind die beiden Funkstrecken zueinander unterschiedlich ausgebildet, indem sie in unterschiedlichen Frequenzbändern operieren und unterschiedliche Übertragungsprotokolle benutzen. Durch die Nutzung eines tragbaren Multimediagerätes, wie z. B. eines Smartphones oder eines Tablet PC wird eine komfortable Bedienung des Kochfeldes durch z. B. große Touch-Tasten und/oder einen hochauflösenden, farbigen Bildschirm erreicht. Zudem wird durch die Nutzung zweier, voneinander unabhängiger Funkstrecken eine sichere Bedienung ermöglicht. Dies gilt insbesondere dann, wenn eine Funkstrecke zur Übertragung der Steuerbefehle und die andere Funkstrecke zur Bestätigung, dass sich ein Benutzer des Multimediagerätes im Nahbereich des Kochfeldes befindet, genutzt wird. Die Übertragung der Steuerbefehle erfolgt dabei beispielsweise über ein standardisiertes WLAN, bzw. WIFI- Funknetz.The hob has a second communication interface which is designed to communicate with the multimedia device via a second radio link. The two radio links are designed differently from one another in that they operate in different frequency bands and use different transmission protocols. By using a portable multimedia device, such as. B. a smartphone or a tablet PC is a comfortable operation of the hob by z. B. large touch buttons and / or a high-resolution, color screen achieved. In addition, the use of two independent radio links enables safe operation. This applies in particular when one radio link is used to transmit the control commands and the other radio link is used to confirm that a user of the multimedia device is in the vicinity of the hob. The control commands are transmitted, for example, via a standardized WLAN or WIFI radio network.

Die erste Kommunikationsschnittstelle ist dazu ausgelegt, Steuerbefehle über ein Drahtlosnetzwerk in Ausbildung eines WLAN-Netzwerkes zu empfangen. Es wird dadurch eine Technik genutzt, die in vielen Haushalten bereits vorhanden ist, und somit eine preisgünstige Übertragungsmethode vom Multimediagerät zum Kochfeld darstellt. Der Datenaustausch zwischen dem Kochfeld und dem Multimediagerät über die erste Funkstrecke ist bevorzugt bidirektional ausgelegt, so dass das Multimediagerät neben dem Senden von Steuerbefehlen auch Daten vom Kochfeld empfangen kann. So kann beispielsweise das Kochfeld mit einzelnen Heizzonen gegenständlich auf dem Multimediagerät dargestellt werden, wobei eingestellte Heizleistungen den Heizzonen zugeordnet angezeigt werden. Ebenso können zusätzliche Werte, wie z.B. verbleibende Garzeiten, aktuelle Temperaturen oder ein Energieverbrauch in grafisch ansprechender Weise dargestellt werden.The first communication interface is designed to receive control commands via a wireless network in the form of a WLAN network. This makes use of a technology that is already available in many households and thus represents an inexpensive method of transmission from the multimedia device to the hob. The data exchange between the hob and the multimedia device via the first radio link is preferably designed to be bidirectional, so that the multimedia device can also receive data from the hob in addition to sending control commands. For example, the hob with individual heating zones can be represented tangibly on the multimedia device, with the heating outputs set being displayed assigned to the heating zones. Additional values such as remaining cooking times, current temperatures or energy consumption can also be displayed in a graphically appealing way.

Die Steuerbefehle sind ohne vorherige Freigabe an das Kochfeld übertragbar und werden dort so lange gespeichert, bis eine Freigabe erfolgt, oder bis sie gelöscht werden. Es können beispielsweise über eine WLAN-Verbindung Steuerbefehle von einer größeren Entfernung aus z. B. über ein Smartphone oder einen Tablet PC an das Kochfeld übertragen werden. Eine Umsetzung der Steuerbefehle im Kochfeld erfolgt erst dann, wenn über die zweite Funkstrecke eine Freigabe dafür erfolgt ist. Zur Freigabe ist es erforderlich, dass sich das Multimediagerät in einem nahen Umfeld, bzw. in Sichtweite zum Kochfeld befindet. Zur Eingabe, bzw. Übertragung der Steuerbefehle durch ein Multimediagerät hingegen ist es für einen Benutzer des Kochfeldes nicht erforderlich, sich in dessen unmittelbarer Nähe aufzuhalten.The control commands can be transmitted to the hob without prior authorization and are stored there until they are released or until they are deleted. For example, control commands from a greater distance from e.g. B. can be transferred to the hob via a smartphone or tablet PC. The control commands in the hob are only implemented when they have been released via the second radio link. To enable it, it is necessary that the multimedia device is in close proximity or within sight of the hob. In order to enter or transmit the control commands through a multimedia device, however, it is not necessary for a user of the hob to be in its immediate vicinity.

Die Freigabe wird durch einen Datenaustausch über eine NFC-Funkstrecke erteilt, wodurch sichergestellt wird, dass die Freigabe nur im Nahfeld des Kochfeldes erfolgt. Dabei ist unter der Abkürzung "NFC" eine "Near-Field-Communication" als internationaler Übertragungsstandard zum kontaktlosen Austausch von Daten über kurze Strecken zu verstehen.The release is given by a data exchange via an NFC radio link, which ensures that the release only takes place in the vicinity of the hob. The abbreviation “NFC” means “near field communication” as an international transmission standard for the contactless exchange of data over short distances.

Die NFC-Funkstrecke ist dazu ausgelegt, über eine maximale Entfernung von 30 cm, insbesondere von 15 cm zu kommunizieren. Dadurch wird eine sehr sichere Bedienung des Kochfeldes per Funkübertragung ermöglicht, da durch die kurze Reichweite der zweiten Funkstrecke sichergestellt ist, dass bei einer erfolgreichen Datenübertragung über diese Funkstrecke sich ein Benutzer des Kochfeldes in dessen unmittelbarer Nähe aufhält. Eine besonders sichere, beaufsichtigte Bedienung in Sichtweite zum Kochfeld ist somit gegeben. Bei größeren Reichweiten, wie z.B. durch eine Bluetooth-Verbindung könnte sich ein Benutzer des Kochfeldes außerhalb der Sichtweite zum Kochfeld befinden (z.B. hinter einer Mauer) und dennoch das Kochfeld steuern. Eine sichere Bedienung wäre dadurch nicht gewährleistet, zumal er theoretisch versehentlich das Kochfeld aktivieren könnte, ohne sich dessen bewusst zu sein.The NFC radio link is designed to communicate over a maximum distance of 30 cm, in particular 15 cm. This enables very safe operation of the hob by radio transmission, since the short range of the second radio link ensures that a user of the hob is in its immediate vicinity if data is transmitted successfully via this radio link. A particularly safe, supervised operation within sight of the hob is therefore given. In the case of larger ranges, e.g. through a Bluetooth connection, a user of the hob could be out of sight of the hob (e.g. behind a wall) and still control the hob. Safe operation would not be guaranteed, especially since he could theoretically accidentally activate the hob without being aware of it.

Des Weiteren betrifft die Erfindung ein Verfahren zur Steuerung des Kochfeldes gemäß dem kennzeichnenden Teil des Patentanspruchs 3, wobei die Steuerbefehle über eine WLAN-Verbindung übertragen werden und vor einer Umsetzung der durch die WLAN-Verbindung übertragenen Steuerbefehle im Kochfeld eine Freigabe dafür erforderlich ist, die über eine zweite Funkstrecke zwischen dem Multimediagerät und dem Kochfeld eingeholt wird und die Freigabe durch einen Datenaustausch über eine NFC-Funkstrecke erteilt wird und die Steuerbefehle ohne vorherige Freigabe an das Kochfeld übertragbar sind und diese dort so lange gespeichert werden, bis eine Freigabe erfolgt, oder bis sie gelöscht werden. Ein entsprechender Verbindungsaufbau über die zweite Funkstrecke zur Freigabe kann dabei vom Kochfeld oder vom Multimediagerät initiiert werden. Durch ein derartiges Verfahren kann sichergestellt werden, dass trotz einer Übertragung der Steuerbefehle an das Kochfeld durch Funksignale nur eine beaufsichtigte Bedienung in Sichtweite zum Kochfeld erfolgt. Es wird dadurch eine Gefährdung bezüglich einer unkontrollierten, bzw. unbeabsichtigten Bedienung ausgeschlossen. Dies wird dadurch erreicht, dass die Reichweite der zweiten Funkstrecke zur Einholung der Freigabe begrenzt ist. Eine derartige Reichweite kann beispielsweise weniger als 30 cm, insbesondere weniger als 15 cm betragen. Dadurch wird sichergestellt, dass eine Bedienung des Kochfeldes durch das Multimediagerät bewusst erfolgt.Furthermore, the invention relates to a method for controlling the hob according to the characterizing part of claim 3, wherein the control commands are transmitted via a WLAN connection and prior to the implementation of the control commands transmitted by the WLAN connection in the hob, a release is required for this is obtained via a second radio link between the multimedia device and the hob and the release is given by data exchange via an NFC radio link and the control commands can be transmitted to the hob without prior release and are stored there until they are released, or until they are deleted. A corresponding connection establishment via the second radio link for release can be initiated from the hob or the multimedia device. Such a method can ensure that, in spite of the transmission of the control commands to the hob by radio signals, only supervised operation takes place within sight of the hob. This eliminates the risk of uncontrolled or unintentional operation. This is achieved in that the range of the second radio link for obtaining the release is limited. Such a range can be, for example, less than 30 cm, in particular less than 15 cm. This ensures that the hob is consciously operated by the multimedia device.

Vorzugsweise bleibt eine erfolgte Freigabe für eine begrenzte Zeitdauer gültig, auch wenn über die zweite Funkstrecke keine Signale mehr übertragen werden. Eine gültige Freigabe kann dabei im Kochfeld und/oder im Multimediagerät hinterlegt sein. Eine Bedienung des Kochfeldes durch einen Benutzer wird durch die längere Gültigkeit der Freigabe komfortabler, da dieser zunächst das tragbare Multimediagerät zur Erlangung einer Freigabe nahe an das Kochfeld heranbringt, sich dann aber zur Eingabe der Steuerbefehle wieder von dem Kochfeld entfernen kann. Die Eingabe der Steuerbefehle kann daher von einem Ort aus erfolgen, von dem aus z. B. das Display des Multimediagerätes besser ablesbar ist, oder der weiter von den heißen Kochdünsten des Kochfeldes entfernt liegt. Dennoch erfolgt eine bewusste Bedienung des Kochfeldes, da sich ein Benutzer des Kochfeldes zunächst in dessen Nahbereich begeben muss.A release that has taken place preferably remains valid for a limited period of time, even if no more signals are transmitted via the second radio link. A valid release can be stored in the hob and / or in the multimedia device. Operation of the hob by a user becomes more convenient due to the longer validity of the release, since the user first brings the portable multimedia device close to the hob to obtain a release, but can then move away from the hob again to enter the control commands. The input of the control commands can therefore be made from a location from which z. B. the display of the multimedia device is easier to read, or which is further away from the hot cooking vapors of the hob. Nevertheless, there is a conscious operation of the hob, since a user of the hob must first move into its immediate area.

Bevorzugt ist es, wenn die Zeitdauer auf einen Wert kürzer als 5 Min., insbesondere kürzer als 3 Min. begrenzt ist. Dadurch wird einerseits genügend Zeit gegeben, um Steuerbefehle einzugeben und an das Kochfeld zu übertragen, und andererseits verhindert, dass sich ein Benutzer des Kochfeldes zu weit von diesem entfernt.It is preferred if the period is limited to a value shorter than 5 minutes, in particular shorter than 3 minutes. This on the one hand gives sufficient time to enter control commands and transmit them to the hob, and on the other hand prevents a user of the hob from moving too far away from it.

Indem für die NFC-Funkstrecke eine aktive RFID (radio frequency identification)-Technik, insbesondere im Frequenzbereich von 13,5 MHz verwendet wird, ist ein besonders sicheres Freigabeverfahren ermöglicht. Als aktive RFID-Technik wird dabei eine bidirektionale Datenübertragung mittels eines aktiven Transponders (mit eigener Stromversorgung) und einem Lesegerät verstanden, bei der beide Geräte aktiv senden können.The fact that active RFID (radio frequency identification) technology is used for the NFC radio link, in particular in the frequency range of 13.5 MHz, enables a particularly secure release method. Active RFID technology is understood to mean bidirectional data transmission using an active transponder (with its own power supply) and a reader, in which both devices can actively transmit.

Gemäß einer weiteren Fortbildung der Erfindung wird zumindest ein Teil der Steuerbefehle durch einen Benutzer des Kochfeldes indirekt über die Auswahl eines zu kochenden Gerichtes am Multimediagerät erzeugt. Ein Benutzer des Kochfeldes wählt beispielsweise aus einer Liste ein zu kochendes Gericht aus, anschließend wird ihm die Belegung unterschiedlicher Heizzonen des Kochfeldes mit passenden Kochgefäßen sowie deren Inhalt angezeigt bzw. aufgelistet. Die entsprechenden Steuerbefehle für die unterschiedlichen Heizzonen, sowie deren Betriebsarten werden gemeinsam über die erste Funkstrecke übertragen. Ein digitales Kochbuch kann somit beispielsweise mit entsprechenden Steuerdaten für das Kochfeld ausgerüstet sein.According to a further development of the invention, at least some of the control commands are generated indirectly by a user of the hob via the selection of a dish to be cooked on the multimedia device. A user of the hob selects a dish to be cooked from a list, for example, and then the occupancy of different heating zones of the hob with suitable cooking vessels and their contents are displayed or listed. The corresponding control commands for the different heating zones and their operating modes are transmitted together over the first radio link. A digital cookbook can thus be equipped with appropriate control data for the hob, for example.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung zweier Ausführungsbeispiele unter Bezugnahme auf die beigefügten Figuren. Es zeigen:

Fig. 1
Ein Kochfeld mit einem Multimediagerät;
Fig. 2
einen Programmablauf gemäß einem nicht erfindungsgemäßen Ausführungsbeispiel und
Fig. 3
einen Programmablauf gemäß dem erfindungsgemäßen Ausführungsbeispiel.
Further features and advantages of the invention emerge from the following description of two exemplary embodiments with reference to the accompanying figures. Show it:
Fig. 1
A hob with a multimedia device;
Fig. 2
a program flow according to an embodiment not according to the invention and
Fig. 3
a program flow according to the embodiment of the invention.

Ein Kochfeld mit einer Glaskeramikplatte 2 auf der vier Heizzonen 4, 6, 8, 10 angeordnet sind, ist in Fig. 1 dargestellt. Das Kochfeld weist ferner eine Bedieneinheit 12 auf, durch das das Kochfeld über Touch-Sensortasten, sowie damit in Wirkverbindung stehende Digitalanzeigen steuerbar ist. Darüber hinaus weist das Kochfeld eine erste Kommunikationsschnittstelle 14 und eine, davon unabhängige zweite Kommunikationsschnittstelle 16 auf, die jeweils unter der Glaskeramikplatte 2 angeordnet sind. Die beiden Kommunikationsschnittstellen 14, 16 sind dazu ausgelegt, jeweils mit einem Multimediagerät 18 zu kommunizieren. Dabei kommuniziert die erste Kommunikationsschnittstelle 14 über eine erste Funkstrecke 20 mit dem Multimediagerät 18. Dementsprechend kommuniziert die zweite Kommunikationsschnittstelle 16 über eine zweite Funkstrecke 22 mit dem Multimediangerät 18. Die erste Funkstrecke 20 ist als WLAN-, bzw. WIFI-Drahtlosnetzwerk ausgebildet. Die zweite Funkstrecke 22 ist als NFC-Funkstrecke ausgebildet und arbeitet im Frequenzbereich von 13,5 MHz über eine aktive RFID-Technik. Während die Reichweite der ersten Funkstrecke durchaus bis zu 100 m betragen kann, beträgt die Reichweite der zweiten Funkstrecke lediglich bis zu 10 cm. Das Multimediangerät 18 ist als Smartphone ausgebildet und weist ein Programm zur Erzeugung von Steuerdaten für das Kochfeld auf.A hob with a glass ceramic plate 2 on which four heating zones 4, 6, 8, 10 are arranged is shown in FIG Fig. 1 shown. The hob also has an operating unit 12 by means of which the hob can be controlled via touch sensor keys and digital displays that are operatively connected to them. In addition, the hob has a first communication interface 14 and a second communication interface 16 which is independent therefrom and which are each arranged under the glass ceramic plate 2. The two communication interfaces 14, 16 are designed to each communicate with a multimedia device 18. The first communication interface 14 communicates with the multimedia device 18 via a first radio link 20. Accordingly, the second communication interface 16 communicates with the multimedia device 18 via a second radio link 22. The first radio link 20 is designed as a WLAN or WIFI wireless network. The second radio link 22 is designed as an NFC radio link and works in the frequency range of 13.5 MHz using active RFID technology. While the range of the first radio link can be up to 100 m, the range of the second radio link is only up to 10 cm. The multimedia device 18 is designed as a smartphone and has a program for generating control data for the hob.

Ein Ablaufdiagramm zur Steuerung des Kochfeldes durch das Smartphone 18 ist in einem nicht erfindungsgemäßen Ausführungsbeispiel entsprechend Fig. 2 dargestellt. Nach einer direkten oder indirekten Eingabe der Steuerbefehle in das Smartphone 18 durch einen Benutzer des Kochfeldes wird mit dem Ablaufschritt S0a die Übertragung der Steuerbefehle gestartet. Dabei ist unter einer direkten Eingabe beispielsweise die konkrete Eingabe der Leistungsstufe einer der Heizzonen 4, 6, 8, 10 zu verstehen. Unter einer indirekten Eingabe ist beispielsweise die Eingabe der Steuerbefehle über die Auswahl eines zu garenden Gerichtes oder über die Auswahl eines Automatikprogramms für eine oder mehrere der Heizzonen 4, 6, 8, 10 zu verstehen. Nachfolgend wird in Ablaufschritt S1a vom Smartphone 18 versucht, einen NFC-Verbindungsaufbau zum Kochfeld über die zweite Funkstrecke 22 herzustellen. Bei erfolglosem Verbindungsaufbau verzweigt das Programm in Ablaufschritt S2a zurück zu Ablaufschritt S1a. Ein erneuter Verbindungsaufbau wird versucht. Ist der NFC-Verbindungsaufbau entsprechend Ablaufschritt S2a erfolgreich, dann holt sich das Smartphone 18 im Ablaufschritt S3a eine Freigabe zur Übertragung der Steuerdaten an das Kochfeld. Darauffolgend stellt das Multimediagerät im Ablaufschritt S4a eine WLAN-Verbindung zum Kochfeld her. Zeitgleich wird in Ablaufschritt S5a ein Timer zur Begrenzung der Freigabedauer gestartet. Ablaufschritt S6a prüft die Gültigkeit der Freigabe und führt das Programm bei Erkennen einer abgelaufenen Freigabe an den Ablaufschritt S1a zurück. Ist die Freigabe nicht abgelaufen, so kann ein Benutzer des Kochfeldes entsprechend Ablaufschritt S7a das Kochfeld über das Smartphone 18 bedienen, wobei dieses während des Zeitraumes der Freigabe Steuerbefehle an das Kochfeld schicken kann, die dann unmittelbar umgesetzt werden. In diesem ersten Ausführungsbeispiel ist eine Bedienung des Kochfeldes durch das Smartphone 18 unmittelbar möglich, solange eine Freigabe dafür existiert, bzw. solange sich das Smartphone 18 innerhalb der NFC-Reichweite befindet.A flow chart for controlling the hob by smartphone 18 is corresponding in an exemplary embodiment not according to the invention Fig. 2 shown. After a direct or indirect input of the control commands into the smartphone 18 by a user of the hob, the transmission of the control commands is started with the process step S0a. A direct input is understood to mean, for example, the specific input of the power level of one of the heating zones 4, 6, 8, 10. Indirect input is understood to mean, for example, the input of control commands by selecting a dish to be cooked or by selecting an automatic program for one or more of the heating zones 4, 6, 8, 10. Subsequently, in process step S1a, the smartphone 18 attempts to establish an NFC connection to the hob via the second radio link 22. If the connection setup is unsuccessful, the program branches back to process step S1a in process step S2a. A new connection is attempted. If the NFC connection setup is successful in accordance with process step S2a, then the smartphone 18 fetches one in process step S3a Release to transfer the control data to the hob. The multimedia device then establishes a WLAN connection to the hob in step S4a. At the same time, a timer to limit the release time is started in step S5a. Process step S6a checks the validity of the release and, if it detects an expired release, returns the program to process step S1a. If the release has not expired, a user of the hob can operate the hob via the smartphone 18 in accordance with sequence step S7a, which can send control commands to the hob during the period of the release, which are then implemented immediately. In this first exemplary embodiment, the hob can be operated directly using the smartphone 18 as long as there is a release for this or as long as the smartphone 18 is within the NFC range.

Das Ablaufdiagramm des erfindungsgemäßen Ausführungsbeispiels ist in Fig. 3 dargestellt. Nach einem Programmstart im Ablaufschritt S0b baut das Smartphone 18 eine WLAN-Verbindung zum Kochfeld im Ablaufschritt S1b auf. Im folgenden Ablaufschritt S2b werden die am Smartphone 18 getroffenen Einstellungen, bzw. die entsprechenden Steuerbefehle an das Kochfeld gesandt. Es folgt Ablaufschritt S3b, bei dem das Smartphone 18 versucht, eine NFC-Funkverbindung zum Kochfeld herzustellen, um die übertragenen Steuerbefehle freizugeben. In Ablaufschritt S4b wird geprüft, ob eine NFC-Verbindung zustande gekommen ist. Ist dies der Fall, so werden in Ablaufschritt S5b die am Smartphone 18 gemachten Eingaben bzw. die Steuerbefehle per NFC-Verbindung bestätigt, bzw. freigegeben und deren Umsetzung im Kochfeld gestartet. Ist keine NFC-Verbindung in Ablaufschritt S4b feststellbar, so springt das Programm zurück zu Ablaufschritt S3b. Nach der Freigabe der Eingaben bzw. der Steuerbefehle in Ablaufschritt S5b wird im Ablaufschritt S6b geprüft, ob die NFC-Verbindung weiterhin besteht. Ist dies nicht der Fall, so wird das Programm mit Ablaufschritt S1b fortgesetzt. Besteht weiterhin eine NFC-Verbindung, so fährt das Programm mit Ablaufschritt S7b fort, wobei das Kochfeld direkt über das Smartphone 18 zu bedienen ist.The flow chart of the exemplary embodiment according to the invention is shown in FIG Fig. 3 shown. After a program start in process step S0b, smartphone 18 establishes a WLAN connection to the hob in process step S1b. In the following process step S2b, the settings made on the smartphone 18 or the corresponding control commands are sent to the hob. This is followed by step S3b, in which the smartphone 18 attempts to establish an NFC radio connection to the hob in order to enable the transmitted control commands. In step S4b it is checked whether an NFC connection has been established. If this is the case, then in step S5b the inputs made on the smartphone 18 or the control commands are confirmed or released via NFC connection and their implementation in the hob is started. If no NFC connection can be determined in step S4b, the program jumps back to step S3b. After the inputs or the control commands have been released in process step S5b, a check is made in process step S6b to determine whether the NFC connection still exists. If this is not the case, the program is continued with step S1b. If there is still an NFC connection, the program continues with process step S7b, the hob being operated directly via the smartphone 18.

BEZUGSZEICHENLISTEREFERENCE LIST

22
GlaskeramikplatteGlass ceramic plate
44th
HeizzoneHeating zone
66th
HeizzoneHeating zone
88th
HeizzoneHeating zone
1010
HeizzoneHeating zone
1212
BedieneinheitControl unit
1414th
Erste KommunikationsschnittstelleFirst communication interface
1616
Zweite KommunikationsschnittstelleSecond communication interface
1818th
MultimediagerätMultimedia device
2020th
Erste FunkstreckeFirst radio link
2222nd
Zweite FunkstreckeSecond radio link
SxaSxa
Ablaufschritt Ausführungsbeispiel 1Sequence step embodiment 1
SxbSxb
Ablaufschritt Ausführungsbeispiel 2Sequence step embodiment 2

Claims (7)

  1. Hob having a first communication interface (14) which is embodied to receive control commands by means of a first radio link (20) through a portable multimedia device (18), wherein the hob has a second communication interface (16) which is embodied to communicate with the multimedia device (18) via a second radio link (22), characterised in that the first radio link is configured as a WLAN or WIFI wireless network and the second radio link (22) is configured as an NFC radio link and a release takes place via the second radio link (22) to implement the control commands transmitted by means of the first communication interface (14), wherein the control commands can be transmitted to the hob without prior release via the WLAN connection and are stored there until they are released via the second radio link (22), or until they are deleted.
  2. Hob according to claim 1, characterised in that the second communication interface (16) is designed to communicate over a maximum distance of 30 cm, in particular 15 cm.
  3. Method for controlling a hob according to one of the preceding claims, in which control commands are transmitted to the hob by means of a first radio link (20) through a multimedia device (18), characterised in that the control commands are transmitted via a WLAN connection and before the control commands transmitted by the WLAN connection are implemented in the hob a release for them is required, which is obtained via a second radio link (22) between the multimedia device (18) and the hob, and the release is granted by an exchange of data via an NFC radio link and the control commands are transmitted to the hob without prior release and are stored there until they are released, or until they are deleted.
  4. Method according to claim 3, characterised in that a release that has taken place remains valid for a limited period of time, even if no signals are transmitted via the second radio link (22).
  5. Method according to claim 4, characterised in that the duration is limited to a value shorter than 5 minutes, in particular shorter than 3 minutes.
  6. Method according to one of the preceding claims 3 to 5, characterised in that an active RFID technology, especially in the frequency range of 13.5 MHz, is used for the NFC radio link.
  7. Method according to one of the preceding claims 3 to 6, characterised in that at least some of the control commands are generated indirectly by a user of the hob on the multimedia device by selection of a dish to be cooked.
EP13717205.2A 2012-04-05 2013-04-02 Hob and method for controlling a hob Active EP2834567B1 (en)

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DE102012205621A DE102012205621A1 (en) 2012-04-05 2012-04-05 Hob and method for controlling a hob
PCT/EP2013/056913 WO2013150014A1 (en) 2012-04-05 2013-04-02 Hob and method for controlling a hob

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US10151494B2 (en) 2018-12-11
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WO2013150014A1 (en) 2013-10-10
DE102012205621A1 (en) 2013-10-10

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