Domestic appliance device

Abstract

In order to increase the security of a communication process, a domestic appliance device (10) is proposed comprising a communication unit (14) for wirelessly communicating with another domestic appliance device (12) and comprising a control unit (16) which is designed to combine at least one data element and at least one test element in order to form a communication packet and transmit the communication packet to the other domestic appliance device (12) using the communication unit (14), wherein the test element can be uniquely assigned to the data element at least in an operating state.

Description

[0001] Household appliance device

[0002] The invention relates to a household appliance device according to claim 1, a household appliance according to claim 9, a household appliance system according to claim 10, a large household appliance according to claim 12, a method for operating a household appliance device according to claim 13, a computer program according to claim 14 and a computer-readable storage medium according to claim 15.

[0003] Wireless communication between one household appliance and another household appliance is known from the prior art.

[0004] The object of the invention is, in particular but not limited to, to provide a generic device with improved properties regarding communication security. This object is achieved according to the invention by the features of claims 1, 9, 10, 12, 13, 14, and 15, while advantageous embodiments and further developments of the invention can be found in the subclaims.

[0005] A household appliance device, in particular a small household appliance device, is proposed, which has a communication unit for wireless communication with another household appliance device, in particular a large household appliance device, and a control unit which is provided to combine at least one data element and at least one check element into a communication packet and to transmit the communication packet to the other household appliance device by means of the communication unit, wherein the check element can be clearly assigned to the data element at least within one operating state.

[0006] Such a configuration can improve error detection regarding communication, particularly bidirectional communication, between the household appliance and the further household appliance. Advantageously, the security and / or reliability and / or responsiveness of a communication protocol between the household appliance and the further household appliance, which has a test protocol dependent on the test element, can be increased, wherein, in particular, an erroneously repeated transmission of the same communication packet can be detected, particularly quickly.In particular, a communication error and / or a malfunction in the household appliance device and / or in a household appliance and / or in the further household appliance device and / or in a further household appliance, in which, for example, a physical error in the control unit in which the test element gets stuck at a constant value and / or a software error which at least prevents the control unit from changing to a next state is present, can be advantageously detected.

[0007] The test protocol can advantageously be added to a communication protocol standard of a “Ki cordless kitchen”, whereby in particular a new communication protocol standard can be defined.

[0008] The household appliance device is in particular at least part, in particular a subassembly, of a household appliance. The household appliance is preferably designed as a food processing appliance for processing at least one food item. The household appliance is preferably designed as a small household appliance. The small household appliance is in particular a portable household appliance that can preferably be transported manually by an operator. The small household appliance can, for example, be designed as a rice cooker, a toaster, a blender, a coffee maker, an air fryer, or the like. The household appliance preferably has at least one functional unit for providing a cooking process and / or a food processing process, in particular a heating and / or mixing and / or steaming and / or deep-frying process and / or the like.

[0009] The further household appliance is in particular at least part, in particular a subassembly, of a further household appliance. The further household appliance is preferably designed as a large household appliance. The large household appliance is in particular a stationary household appliance which is preferably permanently fixed and / or connected in a kitchen. The further household appliance is preferably designed as a hob device, in particular an induction hob device. The further household appliance is preferably designed as a hob, in particular as an induction hob. In an installed position, the hob device is arranged in particular beneath a support plate for placing cooking utensils and / or the small household appliance thereon.The installation plate can be designed as a hob plate, wherein the hob device and the hob plate can in this case be part of a hob or can form this. Alternatively, the installation plate can be designed as a kitchen worktop, in particular made of a non-metallic material. Preferably, the kitchen worktop, in particular in contrast to the hob plate, is additionally provided to provide a food preparation area in which, for example, cutting and / or mixing and / or pounding and / or peeling of food could be carried out. This can advantageously enhance the appearance of the household appliance system and / or the flexibility of use of the installation plate, wherein a versatile installation plate can in particular achieve advantageous space savings in a kitchen.Furthermore, it would be conceivable for the support plate to be designed as a tabletop, in particular a non-metallic one. The support plate can have engravings and / or imprints, in particular for marking at least one installation area for setting up, for example, the household appliance and / or a cooking utensil. Alternatively, the support plate can be free of engravings and / or imprints. Alternatively, it would also be conceivable for the further household appliance device to be designed as a further small household appliance device, wherein the further household appliance can be designed, for example, as a portable induction hob.

[0010] The further household appliance preferably has a further communication unit for communicating with the communication unit. The further household appliance and / or the further household appliance preferably has / has at least one heating coil for at least partially, in particular inductively, supplying energy to at least the functional unit and / or for heating the cooking utensil. It would be conceivable for the heating coil and the further communication unit to be formed at least partially in one piece with one another. The heating coil and the further communication unit are preferably formed and / or arranged separately from one another.

[0011] Alternatively, it would be conceivable for the household appliance device to be designed as a large household appliance device and the further household appliance device to be designed as a small household appliance device.

[0012] The household appliance device and the additional household appliance are preferably part of a household appliance system. The household appliance system comprises, in particular, the household appliance and the additional household appliance. The household appliance system may comprise additional elements and / or units, such as, in particular, the support plate and / or a dispensing unit and / or the like.

[0013] The communication unit has, in particular, an antenna and / or at least one coil for transmitting and, in particular, receiving electrical and / or magnetic and / or electromagnetic signals. The communication unit is, in particular, connected to the control unit at least for data purposes and preferably electrically.

[0014] A “control unit” should be understood in particular to be an electronic unit which preferably has a computing unit and in particular a memory unit with a control program stored therein which is intended to be executed by the computing unit. The control unit can be formed at least partially in one piece with an operating control unit of the household appliance device and / or the household appliance, wherein the operating control unit in particular controls and / or regulates operation of the household appliance, for example as a function of a position of an operating element. The control unit preferably has at least one microcontroller. The further household appliance device preferably has at least one further control unit, in particular with at least one further computing unit and / or one further memory unit.

[0015] The at least one data element preferably comprises user data and can, in particular, have control and / or protocol information that differs from the check element, for example a MAC address or the like. The check element is preferably a check value of a check protocol, in particular one mentioned above, of the communication protocol between the communication unit and the further household appliance. The communication packet preferably comprises, in particular at least by means of the check element, information about a state, in particular a status, of the household appliance. The check element can be arranged at the beginning of a bit sequence, in particular of the entire bit sequence, of the communication packet.

[0016] It is conceivable that the control unit is provided to transmit at least a first communication packet of an operating state independently, in particular independently of a signal from the further household appliance, via the communication unit to the further household appliance. Alternatively or additionally, the control unit can be provided to transmit the communication packet to the further household appliance via the communication unit in response to a signal from the further household appliance, in particular the further communication unit. Preferably, the communication unit is provided to receive a write signal output by the further household appliance and to transmit the communication packet in the form of a read communication packet to the further household appliance, in particular depending on a master role in the communication.Preferably, in the communication protocol, a read communication packet can be assigned to each write signal, whereby, for example, a communication packet and / or signal lost during transmission, in particular on a physical layer, can advantageously be recognized as missing.

[0017] The operating state is to be understood in particular as an operating state of at least the household appliance in which the communication unit preferably communicates with the further household appliance, in particular according to the communication protocol in which the communication packet is transmitted. The control unit is in particular provided to summarize the communication packet in the operating state and transmit it to the further household appliance. Preferably, the operating state is to be distinguished from a further operating state, wherein the household appliance can be transferred to the further operating state, for example, by switching the household appliance off and on and / or resetting the communication protocol, in particular at least the test protocol.A test element of the further operating state can be clearly assigned to a data element of the further operating state, in particular at least within the further operating state. The operating state and / or the further operating state should preferably be understood as at least one state in which the communication protocol is executed properly, in particular free of errors, and / or uninterrupted. Each test element of a respective operating state can preferably be clearly assigned to the respective data element, at least within the respective operating state. It is conceivable that the test element and the test element of the further operating state correspond. Alternatively, it is conceivable that the test element can be clearly assigned to the respective data element in every operating state, in particular even after the household appliance device has been switched off and on.In particular, it is conceivable that the test element and the test element of the further operating state can be clearly distinguished.

[0018] "Intended" should be understood as specifically programmed, designed, and / or equipped. The fact that an object is intended for a specific function should be understood as meaning that the object fulfills and / or performs this specific function in at least one application and / or operating state.

[0019] The check element could be embodied as a binary, hexadecimal, or preferably as a decimal number. The check element is preferably embodied as a natural number, which advantageously reduces the complexity of the check element and / or a check protocol, particularly with regard to applying a calculation operation to the check element. A natural number is understood, in particular, to be a number from a set of natural numbers that contains zero.

[0020] Alternatively, it would be conceivable for the test element to be embodied as a number from any set of numbers deemed reasonable by a person skilled in the art, which may, for example, include negative and / or floating-point numbers. For example, it is conceivable for the test element to be embodied as an integer and / or a rational number. Alternatively, it would also be conceivable for the test element to be embodied as a number, which may, for example, include at least one digit other than a number, such as a letter.

[0021] It is further proposed that the control unit is provided to transmit at least one additional communication packet with at least one additional check element to the further household appliance device after the communication packet. The control unit is in particular provided to combine at least one additional data element and at least the additional check element to form the additional communication packet in the operating state and to transmit the communication packet in the operating state to the further household appliance device by means of the communication unit. In particular, the communication packet can be clearly distinguished from the additional communication packet at least by means of the check element. In particular, the check element can be clearly distinguished from the additional check element.In particular, the communication packet is clearly distinguishable at least from each other communication packet that is summarized and transmitted in the operating state.

[0022] Preferably, the control unit is provided to transmit the additional communication packet to the further household appliance as a function of a response to the communication packet originating from the further household appliance and received by the communication unit. Preferably, the further household appliance, in particular the further control unit, is provided to check the additional check element and in particular to compare it at least with the check element. The further household appliance, in particular the further control unit, can be provided to compare the additional check element directly or indirectly with further preceding check elements that were received before the check element and in particular in the operating state. The recognition of the value of the check element can be carried out on an application layer.

[0023] For the communication protocol, in particular the test protocol, to run successfully, the further household appliance device and / or the household appliance device are / are provided to continue regular communication in accordance with the communication protocol. Preferably, in the event of an error according to the test protocol, the further household appliance device and / or the household appliance device are / is provided to carry out at least one safety operation, at least with regard to the test element. A safety operation can, for example, comprise a reduction and / or a suspension of inductive energy provided by the further household appliance device and / or a system restart of the further household appliance device. Alternatively or additionally, the further household appliance device can be provided to carry out the safety operation by sending a safety signal to the household appliance device.The household appliance and in particular the control unit can, in particular depending on the safety signal, be provided, for example, to block and / or regulate operation of the household appliance and / or to reset and / or repeat the communication protocol and / or to restart the system of the household appliance. Alternatively or additionally, the household appliance and / or the further household appliance can be provided to output an error message to the operator in the event of an error according to the test protocol. Alternatively, it is conceivable that the control unit is provided to check the additional test element and, in particular, to compare it with the test element and, in particular, to initiate the safety operation independently.

[0024] The additional check element and the check element are preferably designed as elements of a same set of numbers. It is further proposed that the check element and the additional check element are each numbers of a common sequence. This allows unique check elements to be generated particularly efficiently. The sequence is preferably free of repeating sequence elements, in particular at least in the relevant value range. In particular, the sequence only has differing sequence elements. Advantageously, a chronological sequence can be assigned to the communication packet and the additional communication packet, whereby in particular a lack of a communication packet, in particular a loss of the communication packet during transmission, can be determined in a particularly simple manner.Advantageously, the additional test element can be compared indirectly with the other preceding test elements in a particularly simple manner by simply comparing the additional test element with the test element. This can advantageously reduce the required computing and / or storage power, particularly of the additional household appliance.

[0025] The control unit is preferably provided to transmit the additional test element to the further household appliance immediately after the communication packet. In particular, the control unit is provided not to transmit any other communication packet between the communication packet and the additional communication packet. It is conceivable for the sequence to be an explicit sequence. However, the sequence is preferably a recursive sequence. Preferably, the control unit, in particular the memory unit of the control unit, is provided to store the test element, at least up to one generation of the additional test element. The control unit, in particular the computing unit, is preferably provided to calculate the additional test element from the stored test element and a functional equation of the sequence stored in the memory unit.The test element and / or the additional test element, in particular a value of the test element and / or the additional test element, are / is preferably independent of the signal, in particular the response, of the further household appliance. The further control unit, in particular the further memory unit, is preferably provided to store the received test element at least until the additional test element is received. Preferably, the further control unit, in particular the further computing unit, is provided to calculate a reference test element as a function of the stored received test element and the functional equation of the sequence stored in the further memory unit, and in particular to compare it with the received additional test element.The additional control unit is intended in particular to detect an error in the communication protocol if the reference test element does not match the additional test element.

[0026] Preferably, the additional test element is larger than the test element, wherein the sequence is preferably designed as an increasing sequence, in particular with regard to a chronological sequence of the test elements, at least in the operating state. It is also proposed that the additional test element is one larger than the test element. In particular, the test element can be designed as a counter which increases by one in each case according to a chronological sequence of the test elements. As a result, the test elements can be generated by a particularly simple arithmetic operation and / or a sequence of the test elements can be assigned in a particularly simple manner. Alternatively, it is conceivable that the additional test element is smaller, in particular one smaller, than the test element.

[0027] In a further embodiment of the invention, it is proposed that the check element be a random or pseudo-random number. This advantageously allows a check element that can be uniquely assigned to the data element to be generated in a particularly simple manner. Preferably, the additional check element is a random or pseudo-random number. The additional household appliance device can be provided to compare the additional check element only with the check element. Alternatively, it would be conceivable for the additional household appliance device to be provided to compare the additional check element with the check element and the other preceding check elements, in particular all other preceding check elements.

[0028] The communication packet preferably has at least one further check element, in particular in the form of a CRC value. The CRC value is in particular a check value according to a CRC (Cyclic Redundancy Check) check method. It would be conceivable for the control unit to be provided to calculate the CRC value before combining the check element and the at least one data element into the communication packet. It would be conceivable, in particular, for the CRC value to only take the at least one data element into account, at least in part. However, it is preferably proposed that the control unit be provided to integrate a CRC value, in particular as mentioned above, which takes the check element into account, into the communication packet. This can particularly advantageously increase the security of the communication. In particular, a check based on the check element can be additionally monitored by checking the CRC value.Furthermore, a data transmission error relating to the test element can advantageously be detected based on the CRC value. The further household appliance device, in particular the further control unit, is preferably provided for testing the further test element. The further household appliance device, in particular the further control unit, is preferably provided for detecting and, for example, also automatically correcting an error that has occurred during the transmission and / or storage of the communication packet. The CRC value can be detected at the physical layer.

[0029] Alternatively or additionally, it is conceivable that the communication package comprises at least one further test element of a different type that appears appropriate to the person skilled in the art, in particular according to a known test method for data transmission.

[0030] It is further proposed that the communication unit be provided for communication with the further household appliance device by means of Near Field Communication (NFC), in particular NFC-A. In particular, the communication unit is provided for transmitting the communication packet to the further household appliance device, in particular to the further communication unit, by means of NFC. The further communication unit is preferably provided for transmitting at least one signal, in particular depending on the test result, to the communication unit by means of NFC. Complexity and / or manufacturing costs can advantageously be reduced by means of already widely developed NFC components and a basic, established NFC communication standard.Furthermore, communication between the communication unit and the further household appliance can take place only over a short distance, in particular typical for the range of NFC communication, between the communication unit and the further household appliance. This can advantageously increase security, in particular for the transmission of control commands for a food processing and / or heating process between the household appliance and the further household appliance. In particular, an adjustment of an operating state of the household appliance, and thus optionally an adjustment of the energy supplied by the further household appliance to the household appliance, can take place particularly securely at the household appliance, in particular only at a short distance from the further household appliance.Preferably, the communication unit and / or the control unit have / have at least one corresponding electronic component, in particular at least one NFC chip, for communication via NFC. Preferably, the further communication unit and / or the further control unit have / have at least one corresponding electronic component, in particular at least one further NFC chip, for communication via NFC.

[0031] Alternatively or additionally, a different type of wireless communication between the communication unit and the further household appliance device, in particular the further communication unit, is conceivable, which appears appropriate to the person skilled in the art.

[0032] It is also proposed that the household appliance device have a power receiving unit which is provided for wirelessly receiving power from the further household appliance device. Preferably, the power receiving unit is provided for a, in particular complete, power supply to at least the household appliance device. The power receiving unit is preferably provided for a power supply to at least the control unit and in particular the communication unit. Advantageously, a wired power supply to the household appliance device can be avoided, whereby in particular flexibility and / or ease of use can be increased and / or a particularly compact design can be achieved. It is conceivable that the power receiving unit is provided for receiving energy, in particular only, from the heating coil.The energy receiving unit is preferably provided to supply energy to the household appliance, in particular at least also to the functional unit. It is particularly conceivable for the energy receiving unit to be provided to supply energy completely to the household appliance. The heating coil can advantageously supply the household appliance with up to 2200 W of power wirelessly.

[0033] Alternatively or additionally, it is conceivable that the energy receiving unit is provided for receiving energy, in particular only, from the further communication unit. In particular, it is conceivable that the energy receiving unit is provided for receiving energy via the signal, in particular an NFC signal, of the further communication unit. It is conceivable that the communication unit and the energy receiving unit are formed at least partially and in particular completely in one piece. In particular, it is conceivable that at least one further energy receiving unit is provided for receiving energy, in particular only, from the heating coil, in particular for supplying energy to at least the functional unit.

[0034] Preferably, the household appliance is designed to be powered completely wirelessly, in particular by the additional household appliance and / or the additional household appliance device. The additional household appliance is preferably at least part of a wireless kitchen appliance. Alternatively or additionally, it would be conceivable for the household appliance device and / or the household appliance to have / have a battery and / or a rechargeable battery and / or a power connector, and in particular to be designed to be partially or completely powered by these.

[0035] Furthermore, a method for operating a household appliance, in particular one mentioned above, is proposed, wherein at least one data element, in particular one mentioned above, and at least one check element, in particular one mentioned above, are combined to form a communication packet, in particular one mentioned above, and the communication packet is transmitted wirelessly to a further household appliance, in particular one mentioned above, wherein the check element can be unambiguously assigned to the data element, at least within one operating state. This can advantageously increase the security of communication between the household appliance and the further household appliance.

[0036] The method preferably comprises a method step, in particular a receiving step, in which the communication unit receives at least one signal from the further household appliance. The method preferably comprises a second method step, in particular a generating step, in which the check element and in particular the data element are generated and, in particular by the control unit, combined to form the at least partial communication packet. Preferably, at least one further check element is added to the at least one data element and the check element in the generating step to create the communication packet. The generating step takes place, in particular, after the receiving step. The method preferably comprises a further method step, in particular a transmitting step, which takes place, in particular, after the generating step.Preferably, the communication unit transmits the communication packet to the further household appliance in the determination step. This method can be repeated, in particular at least within one operating state.

[0037] Preferably, the method is repeated continuously in the operating state. Alternatively, it would be conceivable for the method to be repeated once or multiple times only for the transmission of critical information, for example, in the event of a change in the heating state and / or an operation of a control element, in particular on the household appliance.

[0038] Preferably, the further household appliance receives and checks the communication packet transmitted in the transmission step and, in particular, the check element. Preferably, the further household appliance receives and checks an additional communication packet, in particular as mentioned above, transmitted in an additional method with an additional transmission step, in particular taking place after the method and analogous to the method.The further household appliance preferably compares the additional test element with the test element, wherein in particular a pure differentiation between values ​​of the test element and the additional test element is considered and / or an exact value of the additional test element is compared with a value of a reference test element, in particular one mentioned above, which is determined as a function of the test element and in particular differs from the test element. The further household appliance preferably transmits at least one signal, in particular one mentioned above, to the communication unit, wherein the signal depends in particular on the test result. Furthermore, a computer program comprising instructions which, when the program is executed by a computer, cause the computer to carry out the above-mentioned method is proposed. The computer has in particular at least the control unit and, for example, only the control unit.Furthermore, a computer-readable storage medium with the stored computer program is proposed. The computer program can be stored on the computer-readable storage medium, for example, to be transmitted by a distributor to at least the household appliance and / or the further household appliance and / or the household appliance system. Preferably, the computer program is already integrated into the household appliance and / or the further household appliance and / or the household appliance system during production. The computer-readable storage medium can be embodied as a built-in flash chip, on which, in particular, at least the computer program is stored.

[0039] The household appliance device, the household appliance, the household appliance system, the large household appliance, the method for operating a household appliance device, the computer program, and the computer-storable medium are not intended to be limited to the application and embodiment described above. In particular, the household appliance device, the household appliance, the household appliance system, the large household appliance, the method for operating a household appliance device, the computer program, and the computer-storable medium may have a number of individual elements, components, units, and / or method steps that differs from the number stated herein to fulfill a functionality described herein.

[0040] Further advantages will become apparent from the following description of the drawings. The drawings illustrate exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0041] They show:

[0042] Fig. 1 is a schematic representation of a household appliance system with a household appliance having a household appliance device and with another household appliance having another household appliance device, and

[0043] Fig. 2 is a flowchart of a method for operating the household appliance device.

[0044] Figure 1 shows a household appliance system 50 with a household appliance 30, which has a household appliance device 10. The household appliance system 50 has another household appliance 32, which has another household appliance device 12.

[0045] The household appliance 30 is designed as a small household appliance 40. The household appliance device 10 is designed as a small household appliance device 20. In this case, the household appliance 30 is designed as a mixer 44. Alternatively, another small household appliance 40 that would be appropriate to a person skilled in the art is conceivable.

[0046] The additional household appliance 32 is designed as a large household appliance 42. The additional household appliance device 12 is designed as a large household appliance device 22. In this case, the additional household appliance 32 is designed as an induction hob 46. Alternatively, another large household appliance 42 that would be considered appropriate by a person skilled in the art is conceivable.

[0047] The further household appliance 12 is designed as an induction hob device 48. The further household appliance 12 has at least one heating coil (not shown) for supplying energy and / or heating the household appliance 10 and / or heating a cooking utensil. The further household appliance 12 has at least one further communication unit (not shown) for communicating with a communication unit 14 of the household appliance 10. The heating coil is designed as an induction heating coil.

[0048] The household appliance system 50 has a support plate 54 for supporting the household appliance 30 and / or the cooking utensil to be heated. The support plate 54 is designed as a kitchen worktop 56. Alternatively, it is conceivable that the support plate 54 is designed as a cooktop or a tabletop.

[0049] The household appliance device 10 has the communication unit 14 for wireless communication with the further household appliance device 12. The household appliance device 10 has a control unit 16, which is provided to combine at least one data element and at least one check element into a communication packet and to transmit the communication packet to the further household appliance device 12 by means of the communication unit 14, wherein the check element can be unambiguously assigned to the data element at least within one operating state.

[0050] The communication unit 14 is designed to communicate with the additional household appliance 12 using Near Field Communication (NFC). The communication unit 14 is designed to transmit the communication packet to the additional household appliance 12 using NFC. The additional communication unit (not shown) is designed to transmit at least one signal to the communication unit 14 using NFC.

[0051] The check element is embodied as exactly one byte. Alternatively, it is conceivable for the check element to have a different number of bits, and in particular bytes, that would seem reasonable to a person skilled in the art. The check element is embodied as a natural number. Alternatively, it would be conceivable for the check element to be embodied as a number from any set of numbers that would seem reasonable to a person skilled in the art.

[0052] The control unit 16 is provided to transmit at least one additional communication packet with at least one additional check element to the further household appliance device 12 after the communication packet. The control unit 16 is provided to transmit the additional communication packet to the further household appliance device 12 depending on a response to the communication packet originating from the further household appliance device 12 and received by the communication unit 14. The further household appliance device 12 is provided to check the additional check element and at least compare it with the check element. The response received by the communication unit 14 depends on the test result of the further household appliance device 12.

[0053] The additional communication packet is generated and transmitted in at least one operating state. The check element is clearly distinguishable from the additional check element. The check element clearly distinguishes the communication packet from the at least one additional communication packet.

[0054] The check element and the additional check element are each numbers from a common sequence. The additional check element is larger than the check element. The additional check element is one larger than the check element. The check element is designed as a counter that increases by one according to the chronological order of the check elements.

[0055] Alternatively, the sequence can comprise any functional equation that appears reasonable to a person skilled in the art, which has only unique sequence terms, at least in the relevant value range. Alternatively, it is conceivable that the test element is a random or pseudorandom number.

[0056] The communication packet includes at least one additional check element in the form of a CRC value. The control unit 16 is designed to integrate a CRC value, which takes the check element into account, into the communication packet.

[0057] The household appliance 10 has a power receiving unit 18, which is provided for wirelessly receiving power from the further household appliance 12. The power receiving unit 18 is provided for supplying power to at least the control unit 16 and the communication unit 14. The power receiving unit 18 is provided for receiving power from the further communication unit. The communication unit 14 and the power receiving unit 18 are here at least partially formed as one piece. The household appliance 30 can have at least one further power receiving unit (not shown) for receiving power from the heating coil to supply power to at least one functional unit (not shown) of the household appliance 30.

[0058] Alternatively or additionally, it is conceivable that the energy receiving unit 18 is provided for receiving energy from the heating coil. It is conceivable that the energy receiving unit 18 is provided for supplying energy to the functional unit.

[0059] Alternatively or additionally, it would be conceivable for the household appliance device 10 and / or the household appliance 30 to have / have a battery and / or a rechargeable battery and / or a power connector plug (not shown) and in particular to be / are intended to be partially or completely supplied with energy by these.

[0060] Figure 2 shows a flowchart for a method for operating the household appliance device 10, wherein at least the at least one data element and at least the at least one check element are combined to form the communication packet and the communication packet is transmitted wirelessly to the further household appliance device 12, wherein the check element can be clearly assigned to the data element at least within one operating state.

[0061] The method comprises a receiving step 100 in which the communication unit 14 receives at least one signal from the further household appliance 12. The method comprises a generating step 102 in which at least the test element and the communication packet are generated. In a transmitting step 104 of the method, the communication unit 14 transmits the communication packet to the further household appliance 12. Figure 1 schematically shows a computer-readable storage medium 52. The computer-readable storage medium 52 can be embodied as a flash chip installed in the household appliance 10. The computer-readable storage medium 52 stores a computer program comprising instructions which, when the program is executed by a computer 24, cause the computer 24 to execute the method. The computer 24 is the control unit 16 (see Figure 1).

[0062] Of multiple objects, only one is provided with a reference symbol in the figures.

[0063] Reference symbol

[0064] 10 Household appliance device

[0065] 12 Additional household appliance device

[0066] 14 Communication unit

[0067] 16 Control unit

[0068] 18 Energy receiving unit

[0069] 20 small household appliances device

[0070] 22 Large household appliances device

[0071] 24 computers

[0072] 30 household appliances

[0073] 32 Additional household appliance

[0074] 40 small household appliances

[0075] 42 large household appliances

[0076] 44 mixers

[0077] 46 induction hob

[0078] 48 Induction hob device

[0079] 50 household appliance system

[0080] 52 Computer-readable storage medium

[0081] 54 mounting plate

[0082] 56 kitchen worktop

[0083] 100 receive steps

[0084] 102 Generation step

[0085] 104 Transmission step

Claims

Claims 1. Household appliance device (10), in particular a small household appliance device (20), with a communication unit (14) for wireless communication with a further household appliance device (12), in particular a large household appliance device (22), and with a control unit (16) which is provided to combine at least one data element and at least one test element into a communication packet and to transmit the communication packet to the further household appliance device (12) by means of the communication unit (14), wherein the test element can be clearly assigned to the data element at least within one operating state.

2. Household appliance device (10) according to claim 1, characterized in that the test element is designed as a natural number.

3. Household appliance device (10) according to claim 1 or 2, characterized in that the control unit (16) is provided to transmit at least one additional communication packet with at least one additional check element to the further household appliance device (12) after the communication packet, wherein the check element and the additional check element are each numbers of a common sequence.

4. Household appliance device (10) according to claim 3, characterized in that the additional test element is one larger than the test element.

5. Household appliance device (10) according to claim 1 or 2, characterized in that the check element is a random or pseudo-random number.

6. Household appliance device (10) according to one of the preceding claims, characterized in that the control unit (16) is provided to integrate a CRC value, which takes the check element into account, into the communication packet.

7. Household appliance device (10) according to one of the preceding claims, characterized in that the communication unit (14) is provided for communication with the further household appliance device (12) by means of Near Field Communication (NFC).

8. Household appliance device (10) according to one of the preceding claims, characterized by an energy receiving unit (18) which is provided for wirelessly receiving energy from the further household appliance device (12).

9. Household appliance (30), in particular small household appliance (40), with a household appliance device (10) according to one of the preceding claims.

10. Household appliance system (50) with a household appliance device (10) according to one of claims 1 to 8 and with the further household appliance device (12).

11. Household appliance system (50) according to claim 10, characterized by a large household appliance (42) which has the further household appliance device (12).

12. Large household appliance (42) of a household appliance system (50) according to claim 11.

13. A method for operating a household appliance device (10), in particular according to one of claims 1 to 8, wherein at least one data element and at least one test element are combined to form a communication packet and the communication packet is transmitted wirelessly to a further household appliance device (12), wherein the test element can be clearly assigned to the data element at least within one operating state.

14. A computer program comprising instructions which, when executed by a computer (24), cause the computer to perform the method according to claim 13.

15. A computer-readable storage medium (52) comprising instructions which, when executed by a computer (24), cause the computer to perform the method according to claim 13.

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