WO2025045949A1 - Domestic appliance device - Google Patents

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

household appliance device

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.

Wireless communication between one household appliance and another household appliance is known from the state of the art.

The object of the invention is in particular, but not limited to, providing a generic device with improved properties with regard to the security of communication. The 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.

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 test 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 test element can be clearly assigned to the data element at least within one operating state.

Such a design can improve error detection with regard to a communication, in particular bidirectional communication, between the household appliance device and the further household appliance device. Advantageously, a security and/or reliability and/or responsiveness of a communication protocol between the household appliance device and the further household appliance device, which has a test protocol dependent on the test element, can be increased, in particular an incorrectly repeated transmission of the same grain communication packet, in particular particularly quickly. In particular, an error in the communication and/or a fault in the household appliance and/or in a household appliance and/or in the further household appliance 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.

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.

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 device 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 which can preferably be transported manually by an operator. The small household appliance can be designed, for example, as a rice cooker, a toaster, a mixer, a coffee machine, 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.

The further household appliance device 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 firmly fixed and/or connected in a kitchen. The further household appliance device 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 below a mounting plate for placing cooking utensils and/or the small household appliance. The mounting plate can be designed as a hob plate, wherein the hob device and the hob plate In this case, the support plate can be part of a hob or can form one. Alternatively, the support 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 intended to provide a food preparation area in which, in particular, cutting and/or mixing and/or mashing and/or peeling of food could be carried out. This can advantageously increase the appearance of the household appliance system and/or the flexibility of use of the support plate, whereby a versatile support plate can in particular achieve advantageous space savings in a kitchen. It would also be conceivable for the support plate to be designed as a table top, in particular a non-metallic one. The support plate can have engravings and/or prints, in particular for marking at least one installation area for setting up, for example, the household appliance and/or cooking utensils. Alternatively, the support plate can be free of engravings and/or prints. 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.

The further household appliance device preferably has a further communication unit for communicating with the communication unit. The further household appliance device and/or the further household appliance preferably has/has at least one heating coil for at least partial, in particular inductive, energy supply to at least the functional unit and/or for heating the cooking utensils. It would be conceivable for the heating coil and the further communication unit to be at least partially formed integrally with one another. The heating coil and the further communication unit are preferably formed and/or arranged separately from one another.

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.

The household appliance device and the further household appliance are preferably part of a household appliance system. The household appliance system in particular comprises the household appliance and the further household appliance. The household appliance system can further elements and/or units, such as in particular the mounting plate and/or an output unit and/or the like.

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 in terms of data and preferably electrically.

A “control unit” is to be understood in particular as 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 depending on 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.

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

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 device, via the communication unit to the further household appliance device. Alternatively or additionally, the control unit can be provided to transmit the communication packet to the further household appliance device via the communication unit in response to a signal from the further household appliance device, in particular the further communication unit. Preferably, the communication unit is provided to receive a write signal output by the further household appliance device and to transmit the communication packet in the form of a read communication packet to the further household appliance device, in particular depending on a master role in the communication. Preferably, a read communication packet can be assigned to each write signal in the communication protocol, whereby, for example, a communication packet and/or signal lost during transmission, in particular on a bit transmission layer, can advantageously be recognized as missing.

The operating state is to be understood in particular as an operating state of at least the household appliance device in which the communication unit preferably communicates with the further household appliance device, 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 device. Preferably, the operating state is to be distinguished from a further operating state, wherein the household appliance device can be transferred to the further operating state, for example by switching the household appliance device 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. Preferably, the operating state and/or the further operating state is to be understood as at least one state in which the communication protocol is executed properly, in particular free of an error, and/or uninterrupted. Preferably, each test element of a respective operating state can 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 are the same. Alternatively, it is conceivable that the test element in every operating state, in particular also after a Switching the household appliance on and off can be clearly assigned to the respective data element. In particular, it is conceivable that the test element and the test element of the further operating state can be clearly distinguished.

The term "intended" is understood to mean specifically programmed, designed and/or equipped. The fact that an object is intended for a specific function is understood to mean that the object fulfills and/or carries out this specific function in at least one application and/or operating state.

The test element could be designed as a binary, a hexadecimal or preferably as a decimal number. The test element is preferably designed as a natural number, whereby in particular a complexity of the test element and/or a test protocol, in particular with regard to the application of a calculation operation to the test element, is advantageously reduced. A natural number is to be understood in particular as a number from a natural number set which contains zero.

Alternatively, it would be conceivable for the test element to be designed as a number from any set of numbers that appears reasonable to the 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 designed as an integer and/or as a rational number. Alternatively, it would also be conceivable for the test element to be designed as a number, which may, for example, include at least one digit other than a number, for example a letter.

It is further proposed that the control unit is provided to transmit at least one additional communication packet with at least one additional test 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 test 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 the test element. In particular, the test element can be clearly distinguished from the additional test element distinguishable. In particular, the communication packet is clearly distinguishable at least from every other communication packet that is summarized and transmitted in the operating state.

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

The further household appliance device and/or the household appliance device are provided for a successful execution of the communication protocol, in particular the test protocol, to continue regular communication in accordance with the communication protocol. Preferably, in the event of an error in accordance with the test protocol, at least with regard to the test element, the further household appliance device and/or the household appliance device are provided to carry out at least one safety operation. A safety operation can, for example, comprise a reduction and/or a suspension of an 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 for carrying out the safety operation by sending a safety signal to the household appliance device. The household appliance device and in particular the control unit can, in particular depending on the safety signal, be provided for, for example, blocking and/or regulating an operation of the household appliance device and/or resetting and/or repeating the communication protocol and/or restarting the system of the household appliance device. Alternatively or additionally, the household appliance device can device and/or the further household appliance device may be provided for outputting an error message to the operator in the event of an error in accordance with the test protocol. Alternatively, it is conceivable that the control unit is provided for checking the additional test element and in particular comparing it with the test element and in particular initiating the safety operation independently.

The additional test element and the test element are preferably designed as elements of the same number set. It is further proposed that the test element and the additional test element are each numbers of a common sequence. This allows unique test 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 order 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 previous test elements in a particularly simple manner by simply comparing the additional test element with the test element. This advantageously allows a necessary computing and/or storage power, in particular of the other household appliance device, to be reduced.

The control unit is preferably provided to transmit the additional test element to the further household appliance device directly after the communication packet. The control unit is in particular provided not to transmit any other communication packet between the communication packet and the additional communication packet. It is conceivable that the sequence is an explicit sequence. Preferably, however, the sequence is 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 of the additional test element are/is preferably independent of the signal, in particular the response, of the further household appliance device. The further control unit, in particular the further storage 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 depending on the stored received test element and the functional equation of the sequence stored in the further storage unit and in particular to compare it with the received additional test element. The further control unit is provided in particular to determine an error in the communication protocol if the reference test element does not match the additional test element.

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. This allows the test elements to 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.

In a further embodiment of the invention, it is proposed that the test element is a random or pseudo-random number. This advantageously makes it possible to generate a test element that can be clearly assigned to the data element in a particularly simple manner. Preferably, the additional test element is a random or pseudo-random number. The additional household appliance device can be provided to compare the additional test element only with the test element. Alternatively, it would be conceivable that the additional household appliance device is provided to compare the additional test element with the test element and the other previous test elements, in particular all other previous test elements.

Preferably, the communication packet 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) test method. It would be conceivable for the control unit to be provided to calculate the CRC value before combining the test element and the at least one data element to form 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 is provided to integrate a CRC value, in particular the one mentioned above, which takes the test element into account, into the communication packet. This can increase the security of the communication in a particularly advantageous manner. In particular, a test based on the test element can be additionally checked by checking the CRC value. Furthermore, a data transmission error relating to the test element can advantageously already be detected based on the CRC value. The further household appliance device, in particular the further control unit, is preferably provided to test the further test element. The further household appliance device, in particular the further control unit, is preferably provided to detect and, for example, also to automatically correct an error that has occurred during the transmission and/or storage of the communication packet. The detection of the CRC value can be done at the physical layer.

Alternatively or additionally, it is conceivable that the communication packet comprises at least one other type of test element that appears to be useful to the person skilled in the art, in particular according to a known test method for data transmission.

It is further proposed that the communication unit is 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 to transmit the communication packet by means of NFC to the further household appliance device, in particular to the further communication unit. The further communication unit is preferably provided to transmit 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 device can only take place for a small distance, in particular typical for a range of NFC communication. state between the communication unit and the further household appliance. This can advantageously increase security, in particular for a 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 possibly an adjustment of the energy provided by the further household appliance to the household appliance, can take place particularly safely on 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 at least one corresponding electronic component, in particular at least one NFC chip, for communication by means of NFC. Preferably, the further communication unit and/or the further control unit have at least one corresponding electronic component, in particular at least one further NFC chip, for communication by means of NFC.

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, which appears to be sensible to the person skilled in the art, is conceivable.

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

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 through 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 at least partially and in particular completely formed as 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.

Preferably, the household appliance is intended 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 equipment. Alternatively or additionally, it would be conceivable for the household appliance device and/or the household appliance to have a battery and/or a rechargeable battery and/or a power connector plug, and in particular to be partially or completely powered by these.

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

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 device. The method preferably comprises a second method step, in particular a generating step, in which the The test 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 test element is added to the at least one data element and the test element in the generation step to create the communication packet. The generation step takes place in particular after the reception step. The method preferably has a further method step, in particular a transmission step, which takes place in particular after the generation 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.

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

The further household appliance device preferably receives and checks the communication packet transmitted in the transmission step and in particular the test element. The further household appliance device preferably receives and checks an additional communication packet, in particular mentioned above, transmitted in an additional method with an additional transmission step, in particular taking place after the method and analogous to the method, with an additional test element, in particular mentioned above. The further household appliance device preferably compares the additional test element with the test element, in particular considering a pure distinction between values of the test element and the additional test element and/or comparing an exact value of the additional test element with a value of a reference test element, in particular mentioned above, which is determined as a function of the test element and in particular differs from the test element. The further household appliance device preferably transmits at least one signal, in particular mentioned above, to the communication unit, the signal depending 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 in order to be transmitted by a distributor to at least the household appliance device and/or the further household appliance device and/or the household appliance system. Preferably, the computer program is already integrated into the household appliance device and/or the further household appliance device and/or the household appliance system during production. The computer-readable storage medium can be designed as a built-in flash chip on which in particular at least the computer program is stored.

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 can have a number of individual elements, components and units and/or method steps that differs from a number stated herein in order to fulfill a function described herein.

Further advantages emerge from the following description of the drawing. The drawing shows embodiments of the invention. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will also expediently consider the features individually and combine them into further useful combinations.

They show:

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

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

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 a further household appliance 32, which has a further household appliance device 12.

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. The household appliance 30 is designed here as a mixer 44. Alternatively, another small household appliance 40 that appears appropriate to the person skilled in the art is conceivable.

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. The additional household appliance 32 is designed here as an induction hob 46. Alternatively, another large household appliance 42 that appears appropriate to the person skilled in the art is conceivable.

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

The household appliance system 50 has a support plate 54 for setting up the household appliance 30 and/or the cooking utensils 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 hob plate or a table top.

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 at least at least one data element and at least one test element to form 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.

The communication unit 14 is provided for communication with the further household appliance device 12 by means of Near Field Communication (NFC). The communication unit 14 is provided for transmitting the communication packet to the further household appliance device 12 by means of NFC. The further communication unit (not shown) is provided for transmitting at least one signal to the communication unit 14 by means of NFC.

The test element is designed as exactly one byte. Alternatively, it is conceivable that the test element has a different number of bits and in particular bytes that appears reasonable to the person skilled in the art. The test element is designed as a natural number. Alternatively, it would be conceivable that the test element is designed as a number from any set of numbers that appears reasonable to the person skilled in the art.

The control unit 16 is provided to transmit at least one additional communication packet with at least one additional test 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 test element and at least compare it with the test element. The response received by the communication unit 14 depends on the test result of the further household appliance device 12.

The additional communication packet is generated and transmitted in the at least one operating state. The test element can be clearly distinguished from the additional test element. The communication packet can be clearly distinguished from the at least one additional communication packet by the test element.

The check element and the additional check element are each numbers of a common sequence. The additional check element is larger than the check element. The additional The test element is one larger than the test element. The test element is designed as a counter, which increases by one according to the chronological order of the test elements.

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

The communication packet has at least one further check element in the form of a CRC value. The control unit 16 is provided to integrate a CRC value, which takes the check element into account, into the communication packet.

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

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.

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

Figure 2 shows a flow chart 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 test element can be clearly assigned to the data element at least within one operating state.

The method has a receiving step 100 in which the communication unit 14 receives at least one signal from the further household appliance device 12. The method has a generating step 102 in which at least the test element and the communication packet are generated. In a transmission step 104 of the method, the communication unit 14 transmits the communication packet to the further household appliance device 12. Figure 1 shows a computer-readable storage medium 52 schematically. The computer-readable storage medium 52 can be designed as a flash chip installed in the household appliance device 10. The computer-readable storage medium 52 stores a computer program which includes commands 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).

In each of the figures, only one of the objects present in multiple copies is provided with a reference symbol.

reference sign

10 household appliance device

12 Other household appliance devices

14 communication unit

16 control unit

18 energy receiving unit

20 small household appliance device

22 large household appliance device

24 computers

30 household appliances

32 Other household appliances

40 small household appliances

42 large household appliances

44 mixers

46 induction hob

48 induction hob device

50 household appliance system

52 Computer-readable storage medium

54 mounting plate

56 kitchen countertop

100 reception steps

102 generation step

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 (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 test element is a random or pseudorandom 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, in 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 a 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. 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 the computer program is executed by a computer (24), cause the computer (24) to carry out 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 (24) to carry out the method according to claim 13.