EP2748534A1 - Einrichten einer überwachungsvorrichtung für ein kochfeld - Google Patents
Einrichten einer überwachungsvorrichtung für ein kochfeldInfo
- Publication number
- EP2748534A1 EP2748534A1 EP12762226.4A EP12762226A EP2748534A1 EP 2748534 A1 EP2748534 A1 EP 2748534A1 EP 12762226 A EP12762226 A EP 12762226A EP 2748534 A1 EP2748534 A1 EP 2748534A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hob
- cooking
- monitoring device
- infrared sensor
- temperature
- 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.)
- Granted
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/07—Heating plates with temperature control means
Definitions
- the invention relates to a method for setting up a monitoring device with at least one image-spatially resolving infrared sensor for a hob with at least one hotplate.
- the invention also relates to a monitoring device with at least one image-spatially resolving infrared sensor, a hob and a system of a monitoring device and a hob, each set up for carrying out the method.
- a generic monitoring device for monitoring at least one
- Cooking range of a hob is known from WO 2010/020541 A1.
- the monitoring device is provided for detection in an infrared region and for this purpose has at least one sensor unit with a plurality of infrared sensors, which are arranged in a sensor field.
- the monitoring device can have an evaluation unit which is provided for image evaluation of data acquired by the sensor unit.
- the evaluation unit and the sensor unit may, in cooperation, be provided for detecting and evaluating a temporal sequence of images of the cooking area.
- the evaluation unit can be provided to assign an application situation to a change in a contour determined in at least two different images.
- the arrangement of the infrared sensors in the sensor field can cause a screening of the cooking area to be monitored, and an extension direction of the cooking area to be monitored can be assigned at least eight grids, in particular at least sixteen grids.
- the sensor field can be a two-dimensional field.
- the sensor field may be a square matrix arrangement.
- the sensor unit may have a field of view, which extends into a common area for a hob users in an operation of the hob.
- the monitoring unit can be designed as a safety device for detecting a dangerous situation during an operation of the hob.
- Precondition for an accurate temperature measurement is a sufficiently accurate knowledge of a hotplate and its assignment to one or more pixels of the spatially resolving infrared sensor unit. This assignment is also a prerequisite for a selective shutdown or power reduction of hotplates in the event of detected overheating.
- An establishment of a monitoring device for realizing such an assignment results hitherto only by a coordinated combination of an infrared sensor unit and a monitored cooktop at an accurate compliance with a relative arrangement (location, angle, etc.) of the sensor unit and hob during assembly.
- the monitoring device is to be used with a differently designed hob, the monitoring unit must either know or learn the structure of this hob, if this is possible.
- the monitoring device must be re-set (adjusted) when these or the cooktop are moved against each other. This is often impractical for a layman. It is the object of the present invention to at least partially overcome the disadvantages of the prior art and in particular to facilitate a device of the monitoring unit, in particular with respect to an assignment of cooking zones to pixels of the infrared sensor of the monitoring unit. This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.
- the object is achieved by a method for setting up a monitoring device having at least one image-spatially resolving infrared sensor for a hob with at least one cooking point, wherein the method has at least the step: assigning, in particular by the monitoring device, at least one pixel of the infrared sensor to at least one cooking point.
- the infrared sensor or the monitoring device is thus able to variably adapt the assignment of pixels of the spatially resolving infrared sensor to the cooking zones of the hob. This is in contrast to the prior art, in which at best fixed predetermined pixels are associated with the known cooking zones of a cooking zone.
- the monitoring device can be adapted with little effort to differently configured cooktops. Since, due to the variable adaptation of the assignment, even higher arrangement tolerances between the monitoring device and the hob can be compensated for, simplified assembly is possible.
- the monitoring unit or the at least one infrared sensor can in particular be designed analogously to WO 2010/020541 A1.
- the assignment of at least one pixel of the infrared sensor to at least one hotplate may in particular comprise detecting a hotplate on the basis of contiguous pixels of high temperature. It is exploited that contiguous regions of the cooktop can be assigned to cooking zones that are activated at a comparatively high temperature, the cooking zones of intermediate areas being surrounded by a significantly lower temperature.
- the high temperatures of a hotplate need not be constant, but in particular can form a local temperature plateau with temperatures above an associated threshold.
- the threshold may be predetermined (and optimized, for example, by experiments for good recognition) or may be determined by an appropriate algorithm.
- the assignment of the pixels is carried out as a function of a membership of a temperature sensed at the pixel to a local temperature plateau.
- a particular pixel, if any, is associated with only one hotplate to prevent misidentification of a temperature.
- a hotplate may be associated with one or more contiguous pixels. If a plurality of contiguous pixels are assigned to a cooking location, a temperature of the cooking location (cooking station temperature) can be obtained, for example, by averaging the temperatures sensed by these multiple pixels. As a result, measurement inaccuracies due to temperature fluctuations in the temperature plateau can be largely compensated.
- that pixel associated with the hotplate having the highest sensed temperature value may be selected. This increases safety in monitoring for overheating. Overheating can be detected, for example, as soon as a certain temperature limit is exceeded beyond a defined time interval.
- mapping is performed when all cooking zones of the hob are activated. So all cooking zones are turned on, and the monitoring unit identifies pixels that belong to certain temperature plateaus and consequently to certain cooking zones.
- the assignment is performed at successively activated hotplates.
- the hotplates are thus activated and deactivated one after the other, so that in particular no hotplates are activated at the same time.
- the temperature plateau with the highest temperature corresponds to the currently activated hotplate.
- Folg- borrowed can be selectively deactivated or reduced in performance in a finding of overheating at these pixels, the correlated cooking point, for example, by a transfer of appropriate information or a corresponding command from the monitoring device to the hob.
- the cooking zones are activated until an at least substantially constant temperature is established at the cooking zone.
- associated with a hotplate associated pixels can be reliably detected.
- the hotplates are activated by means of a respective burst of energy. In other words, this means that the radiators of a cooktop are successively subjected to short bursts of energy. This leads to a short-term annealing of the shock-energized radiator (eg, to about 1100 ° C) and thus the associated hotplate, which is detected by the infrared sensor.
- the advantage of this embodiment is the avoidance of heating of the environment (glass ceramic, radiator floor, etc.) of the cooking point and thereby avoiding possible misallocation of the pixels by adjacent hot zones (residual heat ranges) on the hob.
- This in turn has the advantage that the assignment process can be carried out quickly, since waiting times for cooling the hob are eliminated.
- critical temperatures on the hob which can lead to burns due to accidental contact during or after completing the assignment process, more reliably avoided.
- It is a further embodiment which is advantageous for the more reliable detection of cooking zones and for the avoidance of incorrect assignments of pixels to cooking zones, in that the activated cooking zones are heated to a different target temperature.
- the radiator of a hob can be taken in particular either parallel or sequentially with a different duty cycle in operation.
- a different temperature in particular glass surface temperature (GOT)
- GOT glass surface temperature
- Zone circuits are preferably controlled with the same cycle ratio as an associated base radiator of the hob, resulting in an identical temperature.
- an activation of the hotplates is carried out with a cooking point specific information-driven timing of the associated radiator, this clocking is detected with the associated Kochstelle specific information from the infrared sensor and the information of the specified hotplate is assigned.
- a particularly good distinctness of the respective active radiator or hotplate is achieved to adjacent zones of the hob.
- the adjacent zones in contrast to a clocking, may in particular have a constant exponential cooling behavior, e.g. for the dissipation of residual heat.
- it may be dispensed with a dedicated communication device.
- the clocking may, for example, have cooking point-specific frequency patterns.
- this clock pattern is recognizable. For identification of the respective radiator or the associated hob, this can be evaluated.
- the information may include, for example, a radiator identifier or radiator number (e.g., four bits long), a set cooking level (e.g., four bits long), and other data such as acknowledgment bits (ACK) or check bits.
- a radiator identifier or radiator number e.g., four bits long
- a set cooking level e.g., four bits long
- other data such as acknowledgment bits (ACK) or check bits.
- the hob and the monitoring device are communicatively coupled with each other and the hob reports at least one piece of information about a currently activated hotplate to the monitoring device.
- This information may in particular include a cooking station identifier (eg "cooking zone 1", “cooking zone 2", etc.) of a currently activated hotplate.
- the cooking zones or associated radiators activated one behind the other can be provided with an unambiguous link between the pixels belonging to this cooking area and the heating element of the cooking area.
- cooking station-specific information can be returned from the monitoring device to the cooking hob, for example information about a temperature at or overheating of a specific hotplate. The information about the temperature can be used eg for a control of the cooking area.
- the information may additionally or alternatively include other contents, e.g. a feature by which the hotplates are clearly identifiable, especially during simultaneous operation.
- Such information may be, for example, an individual setpoint cooking temperature, in particular expected glass surface temperature (GOT), and / or a cooking point specific clocking (e.g., a duty cycle or a pulse-pause ratio) set during the mapping phase.
- GOT expected glass surface temperature
- a cooking point specific clocking e.g., a duty cycle or a pulse-pause ratio
- the overheating information may generally be associated with at least one action, e.g. with an output of a warning signal or with an instruction to shut down or reduce the power of that particular cooking station.
- the monitoring device reports at least one, in particular temperature-related, information about a particular hotplate to the hob.
- the signaling can generally be carried out, for example, via a wireless (Bluetooth, WLAN, PicoNet etc.) communication connection.
- the hob or a cooking appliance having the hob, eg a stove
- the monitoring device can be equipped with a suitable transmitter, receiver and / or transmitter receiver (transceiver) for this purpose.
- the monitoring device and the hob can be wired together, for example via an Ethernet connection or a home network connection.
- reporting and communicating is done through a user who detects a message on one of the devices and manually enters the contents of that message into the other device.
- at least one of the devices has a display unit for displaying the information to be transmitted to the other device, and the respective other device has an input unit for inputting this information.
- the method described above can be carried out, in particular, in the case of solid, self-heating cooking zones, as for example in the case of radiant heaters (for example with resistance heaters or flash lamps, etc.).
- induction hobs In induction hobs, however, the problem arises that the hotplates or their inductors do not heat themselves, but the heating in a deposited on the hotplates metallic object, especially cooking utensils, is generated.
- for carrying out an allocation process for example, metal blanks whose diameter is adapted to the respective hob, or also (optionally water-filled) cooking utensils, e.g. Pots on which cooking plates are placed.
- the glass-ceramic cover of the hob can be covered with ferromagnetic metal foil. When the inductors are activated, they are only selectively heated above the inductors.
- a special embodiment may be a local covering of the inductors with a respective film adapted to the diameter of the inductor. This can then be successively placed from one cooking position to the next during the teaching process.
- the special advantage of the film is its low thermal inertia, so that it heats up quickly and also cools down quickly.
- the allocation process is also possible with normally used cookware, as a residual heat of the hob cover between the cooking zones is negligible due to their low heat cross-section. Consequently, the inductors can be used analogously to radiant heaters and in particular controlled. It is also an embodiment that the method is performed several times in succession, in particular at regular intervals ("pot tracking"). In particular, the pot tracking can be carried out during a cooking process, while the allocation process with fixed, self-heating hotplates is preferably carried out once upon commissioning or movement of the monitoring unit.
- the "pot tracking" is particularly advantageously applicable for induction hobs, which no longer have localized cooking zones, but a (dense) packing a plurality of smaller inductors.
- cooking utensils can be placed essentially arbitrarily on the hob, and the cooking utensils are energized by those inductors with energy, which are currently located below the cooking utensils.
- a static association between hotplates and pixels does not make sense, since the cooking utensils can be positioned anywhere on the hob and thus an associated heating area can arise locally at any location on the hob.
- a monitoring device should therefore be able to spatially identify the heating areas determined by local temperature plateaus in each individual recording and dynamically assign pixels to a temporal sequence of images of an infrared sensor.
- the "pot tracking" is suitable for this.
- the object is also achieved by a monitoring device having at least one image-wise spatially resolving infrared sensor, wherein the monitoring device is set up to carry out the method described above.
- the monitoring device for example, a wireless or wired transmitter, receiver or transceiver for communication with the hob have.
- the monitoring device may have a display unit and / or an input unit.
- the monitoring device can have an evaluation unit for evaluating the sensor signals output by the at least one infrared sensor.
- the evaluation unit can also be set up to carry out the assignment of temperature plasma to cooking zones and / or picture elements.
- the evaluation unit can also be set up to recognize dangerous situations on the basis of the evaluation, e.g. an imminent or already occurring overheating, e.g. a fire.
- the evaluation unit can also be designed to output notes or commands to the hob and / or to a user on the basis of a recognized dangerous situation (possibly cookie-specific).
- a motion sensor is integrated into the monitoring unit.
- a movement of the monitoring unit can be detected, which can be an indication that the pixels are being reassigned to the cooking zones.
- the monitoring unit can output a message to a user when a movement is detected.
- a spectral range of the at least one infrared sensor lies in a transmission range of glass ceramic.
- the pulsed energization of the radiator can be determined without any significant influence of the glass ceramic and therefore particularly precise.
- an independent infrared sensor may be used for this purpose.
- Transmittance ranges of glass-ceramic are in particular between about 0.7 micrometers and 2.8 micrometers and at about 3.7 micrometers. Consequently, a surface-sensitive infrared sensor can directly detect or monitor a heating element located under the glass-ceramic plate when viewed from above on a hob covered by a glass-ceramic plate.
- the infrared sensor is only slightly influenced by the glass ceramic.
- the temperature of a current-carrying radiator is typically about 1000 ° C. A typical for the operation of the radiator clock holding the radiator can therefore be observed directly on the basis of strongly pronounced temperature changes during clock-related heating and cooling phases of the radiator.
- the object is also achieved by a cooktop appliance with at least one hob, wherein the cooktop appliance is set up for carrying out the method described above.
- the cooktop unit can in particular have radiant heaters or inductors (induction cooktop).
- the cooktop device may include a wireless or wired transmitter, receiver, or transceiver for (unidirectional or bidirectional) communication with the cooktop.
- the monitoring device may comprise a display unit and / or an input unit.
- the cooktop unit may further comprise a control device which controls the cooking zones of the cooktop and which is adapted, possibly in cooperation with the monitoring device, to activate the cooktops suitably for an assignment sequence, eg simultaneously, one behind the other, with a burst of energy, to a predetermined temperature etc.
- a control device which controls the cooking zones of the cooktop and which is adapted, possibly in cooperation with the monitoring device, to activate the cooktops suitably for an assignment sequence, eg simultaneously, one behind the other, with a burst of energy, to a predetermined temperature etc.
- the cooktop appliance may e.g. a stove or a separate hob.
- the object is also achieved by a system of such a monitoring device and such a cooktop device.
- the monitoring device is advantageously arranged directly above or obliquely above the hob of the cooktop appliance for providing a large and clear field of view.
- the hob should be as complete as possible, directly in the field of view of the camera.
- the allocation process may be carried out only once at a commissioning of the cooktop, the monitoring device or the system, especially in fixed radiant heaters, or if the motion detector has detected a movement of the monitoring device ("training phase").
- the invention may in particular have the following advantages: It is certainly possible to assign the cooking zones in the image of the infrared sensor to the actual cooking zones of the hob. In conjunction with transmission and evaluation of cooking location information (e.g., a cooking level) from the hob to the monitoring device, a more precise hazard assessment is possible. It is a selective shutdown or power reduction of radiators possible. It is possible to use the monitoring device with a large number of plate mirrors without them having to be statically programmed in advance. In addition, "Pot-Tracking" makes it possible to detect hazards even on induction hobs without firmly defined cooking zones or heating zones. An imprecise mechanical attachment of the monitoring device on the hob is more tolerable (high tolerances are allowed), since the assignment of the hotplates to the pixels is automated and variable.
- the advantages It is certainly possible to assign the cooking zones in the image of the infrared sensor to the actual cooking zones of the hob. In conjunction with transmission and evaluation of cooking location information (e.g., a cooking level)
- Monitoring device can also be installed by a technical layman (possibly even without installation instructions), which leads to a cost reduction, since no customer service is needed. Assembly of the monitoring device or system may, in one variant, be divided into three main steps. These include a mechanical installation of the monitoring device relative to the hob, a determination of the field of view of the at least one infrared sensor of the monitoring device (eg by a Selection of optics of suitable focal length) and a final assignment of the pixels of the at least one infrared sensor to the cooking zones of the hob.
- the monitoring device can first be aligned relative to the hob. This can e.g. by specifying installation dimensions (for example, a mounting height and a position) in an associated installation manual.
- installation dimensions for example, a mounting height and a position
- a template may be used, through which e.g. centered position of the infrared sensor on the hob of the width b and installation at an optimum height h is guaranteed.
- the template may consist in particular of paper, cardboard or plastic.
- the hob is preferably completely in the field of view of the infrared sensor.
- the hob fills the field of view of the camera completely, which leads to an optimal use of the resolution of the infrared sensor.
- Each individual pixel of the infrared sensor is then assigned to a surface element of the hob surface.
- An adaptation of the infrared sensor with respect to the hob width can also be done by choosing optics (e.g., lenses) of appropriate focal length adapted to the hob width.
- optics e.g., lenses
- the infrared sensor can be adapted in a simple and cost-effective manner to the respective hob width without having to make changes to the rest of the device.
- the next step is the above-described assignment of pixels to hotplates. This process is ideally carried out automatically. Thus, errors can advantageously be avoided. Also, this results in a time savings in comparison to a, in principle, also possible controlled by a user, in particular menu-guided, methods.
- FIG. 1 shows in partial plan view a system with a cooktop device and with an infrared sensor of a monitoring device together with a Drawing of grid-like pixels of the infrared sensor on a hob of the hob device;
- FIG. 2 shows a time sequence of a pulse-like timing of a power P (upper curve) impressed into a cooking position and an associated temperature development on a hob cover of this cooking point;
- FIG. 3 shows a plan view of a section of an induction hob with a
- FIG. 4 shows a top view of an induction hob with a densely packed array of inductors with cooking utensils at a first position of the induction hob;
- Figure 5 shows in plan view an induction hob with a close-packed array of inductors with cooking utensils on a second position of the induction hob.
- 1 shows a system 1, 3 which has a cooktop appliance 1 (for example a stove or a separate cooktop) with a cooktop 2 and with a monitoring device 3 arranged above it with a pixel-like spatially resolving infrared sensor 4.
- a cooktop appliance 1 for example a stove or a separate cooktop
- a monitoring device 3 arranged above it with a pixel-like spatially resolving infrared sensor 4.
- the infrared sensor 4 may comprise a field of individual sensors ("sensor array").
- the thermocouples can be present in particular as thermopiles or "thermopiles".
- the hob 2 is completely covered and monitored by the downward or obliquely downward field of view B of the infrared sensor 4.
- the field of view B is subdivided analogously to the arrangement of the thermopile of the infrared sensor 4 in a grid R, wherein the grid R is made up of a square 10x10 matrix arrangement of serving as a picture "dots" grid surfaces F. Of the one hundred screen areas F, ninety grid areas F cover the hob 2.
- a temperature of each of the grid areas F can be individually sensed.
- the cooktop 2 here has four cooking zones 5a, 5b, 5c and 5d.
- the grid areas F In order to be able to measure a temperature of the cooking areas 5a-d or of objects placed thereon (cooking utensils, etc.), it is necessary to assign the grid areas F to the cooking areas 5a-d, since this assignment is not predetermined in the present case.
- To set up the monitoring Device 3 are thus assigned selected grid surfaces F of the infrared sensor 4 to the cooking zones 5a, 5b, 5c and 5d.
- all four cooking zones 5a-d are activated for carrying out an assignment sequence, in particular by a cyclic activation of radiant heating elements 7a-d arranged under a glass-ceramic cover 6.
- the glass-ceramic cover 6 heats up strongly, whereas it is less strongly heated between the cooking areas 5a-d.
- Those contiguous grid areas F at which a high temperature is sensed i.e., typically at grid areas F which at least partially cover a cooking area 5a-d
- the grading and assignment is carried out here as a function of a membership of a sensed on a grid surface F temperature to a local temperature plateau, which is above a certain temperature threshold.
- the temperature threshold value can be, for example, above a maximum temperature that can be reached in an intermediate region between cooking zones 5a-d.
- fourteen grid surfaces F (5a) of the hob 5a, eleven grid surfaces F (5b) of the hob 5b, twelve grid surfaces F (5c) of the hob 5c and four grid surfaces F (5d) of the hob 5d are assigned.
- the temperatures of the associated cooking zones 5a-d are determined below, for example by averaging over the grid areas F (FIG. 5a), F (5b), F (5c) and F (5d), respectively.
- An implementation of this assignment process, in which all cooking zones 5a-d are activated, is particularly time-saving.
- the hotplates 5a-d can be heated to a different target temperature.
- the cooktop unit 1 or the cooktop 2 can notify the monitoring device 3 (eg via a respective wireless or wired communication interface) of a cooktop code and the associated target temperature of the cooktops 5a-d.
- the monitoring device 3 can subsequently transmit a temperature or an overheating of a hob 5a-d together with the hob detection to the hob 2, whereby a temperature control or selective safety shutdown of this hob 5a-d is made possible in a simple manner.
- an activation of the radiator 7a-d and thus of the cooking zones 5a-d can be carried out by means of an information-dependent clocking in order to obtain a clear assignment.
- 2 shows a chronological sequence of a pulse-like timing of a power P (upper curve) impressed into one of the cooking zones 5a-d and an associated temperature development on the hob cover 6 of this cooking point 5a-d.
- the impressing of the power P takes place in particular bit-like.
- the hob cover 6 is thereby also heated in a pulse-like manner, but with a tooth-like shape of the bits. Consequently, bit-like information can be transmitted both by the power P of the heater 7a-d and by the local temperature of the cooktop cover 6 above the heaters 7a-d.
- the radiator 7a-d can be operated with a maximum power P.
- the timing i.e., in particular the clocked power signal or the associated temperature signal
- the information impressed on the timing can be detected by the infrared sensor 4, in particular if it is sensitive in a spectral range corresponding to a transmission range of the glass-ceramic 6. Because this allows the infrared sensor 4, the sharper timing signal of the radiator 7a-d directly sense, which increases a recognition accuracy.
- the timings have a predetermined structure, which here purely by way of example shows a 2-bit field A1 for indicating an incipient transfer of information, a 4-bit field A2 with the identifier or number of the associated (issuing the information) radiator 7a. d, a 4-bit field A3 for a cooking stage, at least one field A4 for other features (such as a target temperature, etc.), a 3-bit field A5 for a check bit, and a 2-bit field A6 for indicating an end of the information transmission having.
- This information (s) may be decoded by the monitoring device 3 from the timing and in turn associated with the sensed cooking point 5a-d.
- an information associated with the cooking area 5a-d eg identifier, may be communicated by a clearly assigned pulse-pause ratio of the timing of the associated heating body 7a-d.
- the currently activated cooking zones 5a-d can be activated until an at least substantially constant temperature is established at this cooking point 5a-d. It is a further embodiment that is advantageous for avoiding misallocations, that the hotplates 5a-d are activated by means of a respective energy pulse. This leads to a short-term annealing of the momentarily energized radiator 7a-d and thus the associated hob 5a-d, which is detected by the infrared sensor 4. Advantage of this design is to avoid heating the environment (glass ceramic, radiator floor, etc.) of the cooking area 5a-d and thereby avoiding possible misallocation of the pixels by adjacent hot zones (residual heat ranges) on the hob. 2
- the monitoring device 3 may have a motion sensor 8, which can detect a movement of the monitoring device 3.
- the set-up or allocation process described above may occur, in particular, at the beginning of a first start-up or after a subsequent movement of the over- monitoring unit, as it can be determined, for example by the motion sensor 8, are performed.
- FIG. 3 shows a plan view of a detail of a cooktop appliance 1 1, which is an induction cooktop 12, which has at least one cooktop 15 equipped with an inductor 17, instead of the cooktop appliance 1 and the cooktop 2 equipped with radiant heaters 7a-d. Furthermore, in relation to the hob 15 and the inductor 17 laterally offset cooking utensils G in the form of a pot or similar. located. While the cooking areas 5a-d provided with the radiators 7a-d also heat up without mounted cooking utensils, an alternating magnetic field is generated by the inductor 17 which generates an induction current in the cooking utensil G, which first heats the cooking utensil G first.
- the inductor 17 and the cooking utensil G are laterally offset from one another, only the area of the cooking area 15 covered by the cooking utensil G becomes warm. In particular, the area of the cooking utensil G covering the cooking area 15 can then be more easily overheated.
- the temperature could be incorrectly measured in the case of a staggered cooking utensil G, in particular if a temperature averaging over the pixels or raster areas is undertaken ,
- the above-described setup or assignment process can also be performed during a normal cooking operation, for example from switching on the induction cooktop 12 or a hotplate 15th
- the setting-up or association process is preferably carried out several times in succession, in particular at regular intervals ("pot-tracking"). This can be done on the basis of the normal cooking utensils G.
- FIG. 4 shows in plan view a system 21, 3, comprising a cooktop unit 21 with an induction cooktop 22 with a densely packed array of comparatively small inductors 27 and with the monitoring device 3.
- the cooking utensil G is in the form of a pot etc. placed there and is heated there by an energy transfer from the located below the cooking utensils G 17 inductors.
- the inductors 17 located below the cooking utensil G thus form a "virtual" or "ad hoc" cooking station 15.
- An elevated temperature in the region of a temperature plateau is determined by the grid surfaces I, m, n, o, since the infrared sensor 4 senses the cooking utensil G, while the cooktop cover, in particular glass ceramic 6, remains comparatively cold. Consequently, the raster areas I, m, n, o serving as pixels are assigned to the cooking area 25. 5 shows the system 21, 3 with the cooking utensil G on a second position of the induction hob 22. In this case, an elevated temperature in the region of a temperature plateau is determined by the grid surfaces w, x, y, z.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Stoves And Ranges (AREA)
- Radiation Pyrometers (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011081355A DE102011081355A1 (de) | 2011-08-23 | 2011-08-23 | Einrichten einer Überwachungsvorrichtung für ein Kochfeld |
| PCT/EP2012/066015 WO2013026766A1 (de) | 2011-08-23 | 2012-08-16 | Einrichten einer überwachungsvorrichtung für ein kochfeld |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2748534A1 true EP2748534A1 (de) | 2014-07-02 |
| EP2748534B1 EP2748534B1 (de) | 2018-12-12 |
Family
ID=46889002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12762226.4A Not-in-force EP2748534B1 (de) | 2011-08-23 | 2012-08-16 | Einrichten einer überwachungsvorrichtung für ein kochfeld |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2748534B1 (de) |
| DE (1) | DE102011081355A1 (de) |
| WO (1) | WO2013026766A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2562480B1 (de) * | 2011-08-22 | 2018-03-07 | BSH Hausgeräte GmbH | Kochfeld mit Überwachungsvorrichtung |
| CN109997413A (zh) * | 2016-12-05 | 2019-07-09 | 三菱电机株式会社 | 感应加热烹调器 |
| WO2020144445A1 (en) * | 2019-01-11 | 2020-07-16 | Bailey Samuel Gerard | Monitoring cooking appliances |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT514466A1 (de) * | 2013-07-10 | 2015-01-15 | Gerfried Dipl Ing Cebrat | Energie-sparende Dunstabzug-Kochstellen-Kombination |
| DE102014220273A1 (de) | 2014-10-07 | 2016-04-07 | BSH Hausgeräte GmbH | Bestimmen einer Temperatur mittels eines Infrarotsensors |
| DE102016104696A1 (de) * | 2016-03-15 | 2017-09-21 | Miele & Cie. Kg | Kochvorrichtung |
| CN109248381A (zh) * | 2017-07-12 | 2019-01-22 | 库诺国际有限公司 | 非接触式温度控制加热装置 |
| GB2564657B (en) * | 2017-07-17 | 2019-09-18 | Gerard Bailey Samuel | Cooking hob monitoring method |
| FI127878B (fi) | 2018-01-09 | 2019-04-30 | Safera Oy | Liesivahti, joka hyödyntää laajaa näkökenttää |
| JP7195104B2 (ja) * | 2018-10-01 | 2022-12-23 | 大阪瓦斯株式会社 | 調理支援システム |
| USD927996S1 (en) | 2019-05-21 | 2021-08-17 | Whirlpool Corporation | Cooking assistance appliance |
| US11517146B2 (en) | 2019-05-21 | 2022-12-06 | Whirlpool Corporation | Cooking assistance appliance |
| EP3883340A1 (de) * | 2020-03-20 | 2021-09-22 | Electrolux Appliances Aktiebolag | Kochanordnung und verfahren zum betrieb einer solchen kochanordnung |
| JP7617557B2 (ja) * | 2021-02-25 | 2025-01-20 | パナソニックIpマネジメント株式会社 | 加熱調理器 |
| EP4383944A1 (de) * | 2022-12-05 | 2024-06-12 | Miele & Cie. KG | Garsystem |
| BE1031107B1 (de) * | 2022-12-06 | 2024-07-01 | Miele & Cie | Garsystem |
| DE102023126369A1 (de) * | 2023-09-27 | 2025-03-27 | Rational Wittenheim Sas | Verfahren zum Betreiben eines Gargeräts sowie Gargerät |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3909125A1 (de) * | 1989-03-20 | 1990-09-27 | Diehl Gmbh & Co | Steuereinrichtung einer dunstabzugshaube |
| SE525894C2 (sv) * | 2002-03-07 | 2005-05-24 | Jenka Electronics As | System och sätt för övervakning av elektrisk spis |
| JP2009092338A (ja) * | 2007-10-11 | 2009-04-30 | Panasonic Corp | レンジフードファン |
| DE102008041390A1 (de) | 2008-08-20 | 2010-02-25 | BSH Bosch und Siemens Hausgeräte GmbH | Kochfeldvorrichtung |
| DE102010039371B4 (de) * | 2010-08-16 | 2012-08-30 | BSH Bosch und Siemens Hausgeräte GmbH | Steuervorrichtung für ein Hausgerät sowie Hausgerät mit einer Steuervorrichtung |
-
2011
- 2011-08-23 DE DE102011081355A patent/DE102011081355A1/de not_active Withdrawn
-
2012
- 2012-08-16 WO PCT/EP2012/066015 patent/WO2013026766A1/de not_active Ceased
- 2012-08-16 EP EP12762226.4A patent/EP2748534B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013026766A1 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2562480B1 (de) * | 2011-08-22 | 2018-03-07 | BSH Hausgeräte GmbH | Kochfeld mit Überwachungsvorrichtung |
| CN109997413A (zh) * | 2016-12-05 | 2019-07-09 | 三菱电机株式会社 | 感应加热烹调器 |
| EP3550933A4 (de) * | 2016-12-05 | 2019-12-25 | Mitsubishi Electric Corporation | Induktionserwärmungskocher |
| CN109997413B (zh) * | 2016-12-05 | 2022-02-25 | 三菱电机株式会社 | 感应加热烹调器 |
| WO2020144445A1 (en) * | 2019-01-11 | 2020-07-16 | Bailey Samuel Gerard | Monitoring cooking appliances |
| AU2019419950B2 (en) * | 2019-01-11 | 2025-09-18 | Pippa Technologies Limited | Monitoring cooking appliances |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013026766A1 (de) | 2013-02-28 |
| DE102011081355A1 (de) | 2013-02-28 |
| EP2748534B1 (de) | 2018-12-12 |
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