Household appliance capable of switching communication distance

Abstract

The utility model relates to a household appliance capable of switching a communication distance. The household appliance capable of switching the communication distance comprises an appliance body and a wireless communication module arranged on the appliance body, the wireless communication module comprises a radio frequency chip, an antenna matching circuit unit and an antenna, the antenna matching circuit unit is connected with the radio frequency chip and the antenna, the radio frequency chip is provided with a power module, and the power module is connected with the antenna matching circuit unit. The antenna matching circuit unit comprises a switching module, a first antenna matching circuit and a second antenna matching circuit, the switching module is used for switching the antenna matching circuit connected with the radio frequency chip, and the communication distance of a communication signal modulated by the first antenna matching circuit is larger than that of a communication signal modulated by the second antenna matching circuit. According to the scheme provided by the invention, the wireless communication module of the household appliance can realize flexible switching between short-distance communication capability and long-distance communication capability only through one antenna matching circuit unit, so that the production cost is reduced, and the circuit universality is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of smart home appliances, and in particular to a home appliance capable of switching communication distances. Background Art

[0002] Most smart home appliances have wireless communication functions. Different products have different requirements for wireless communication in different scenarios, such as wireless communication between products and mobile phones, wireless communication between products and routers, and wireless communication between products. Take two specific wireless communication scenarios as examples: wireless communication between devices and mobile phones. Representative products of this type include rice cookers, air fryers, and wall breakers. They can be bound by operating the mobile phone mini program to realize the function of controlling the product on the mobile phone. The communication distance in this scenario is usually required to be greater than 6 meters; wireless communication between products. Representative products of this type include electric mops and charging stations, sweeping robots and base stations. In this scenario, in order to avoid interference between signals when broadcasting with other similar devices, the communication distance is usually required to be 20-40cm.

[0003] In existing smart home appliances, only one wireless communication module is usually set, and the maximum communication distance of the communication module is fixed. If a short-distance communication module is set, it can meet the short-distance communication between the device and the charging station or base, etc., but cannot meet the long-distance communication with terminals such as mobile phones. If a long-distance communication module is set, it can meet long-distance and short-distance communication. However, in the short-distance communication scenario, its wireless signal is still transmitted to the environment at a long distance, which is easy to cause signal interference between different home appliances and affect the stability of wireless communication. If the home appliance needs to be able to switch between long-distance communication and short-distance communication, at least two wireless communication modules with different communication distances need to be set, which will undoubtedly increase the manufacturing cost of the whole machine of the home appliance; and the hardware antenna design part of these wireless communication modules and the module software signal strength need to be designed differently, so that different versions of communication modules are mass-produced at the production end, and the universal design of the module hardware cannot be achieved, which increases the production cost. At the same time, the subsequent design changes and upgrades of the module circuit need to be synchronized to various different versions of the module, which increases the management and control costs of research and development. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a household appliance with switchable communication distance.

[0005] The present disclosure provides a household appliance with switchable communication distance, comprising a device body and a wireless communication module arranged on the device body, the wireless communication module comprising a radio frequency chip, an antenna matching circuit unit and an antenna, the antenna matching circuit unit connecting the radio frequency chip and the antenna, the radio frequency chip being configured with a power module, wherein the antenna matching circuit unit comprises a switching module and at least two antenna matching circuits, the at least two antenna matching circuits comprising a first antenna matching circuit and a second antenna matching circuit, the communication distance of a communication signal modulated by the first antenna matching circuit being greater than the communication distance of a communication signal modulated by the second antenna matching circuit, the radio frequency chip being used to obtain device type information and device status information, and the switching module being used to switch the antenna matching circuit connected to the radio frequency chip according to the device type information or the device status information.

[0006] In some embodiments, the antenna matching circuit includes a capacitor and an inductor, the operating frequency of the capacitor of the first antenna matching circuit is greater than the operating frequency of the capacitor of the second antenna matching circuit, and / or the inductance of the inductor of the first antenna matching circuit is lower than the inductance of the inductor of the second antenna matching circuit, so that the power loss of the communication signal modulated by the first antenna matching circuit is less than the power loss of the communication signal modulated by the second antenna matching circuit.

[0007] In some embodiments, the antenna matching circuit includes a high-frequency capacitor and an inductor, and the inductor inductance of the first antenna matching circuit is lower than the inductor inductance of the second antenna matching circuit, so that the power loss of the communication signal modulated by the first antenna matching circuit is less than the power loss of the communication signal modulated by the second antenna matching circuit.

[0008] In some embodiments, the antenna matching circuit includes a low-frequency capacitor and an inductor, and the inductor inductance of the first antenna matching circuit is lower than the inductor inductance of the second antenna matching circuit, so that the power loss of the communication signal modulated by the first antenna matching circuit is less than the power loss of the communication signal modulated by the second antenna matching circuit.

[0009] In some embodiments, the first antenna matching circuit includes a high-frequency capacitor, the second antenna matching circuit includes a low-frequency capacitor, and the inductor inductance of the first antenna matching circuit is lower than the inductor inductance of the second antenna matching circuit, so that the power loss of the communication signal modulated by the first antenna matching circuit is less than the power loss of the communication signal modulated by the second antenna matching circuit.

[0010] In some embodiments, the second antenna matching circuit transmits the communication signal of the RF chip to the antenna, and the communication distance of the communication signal does not exceed 40 centimeters.

[0011] In some embodiments, the first antenna matching circuit transmits the communication signal of the radio frequency chip to the antenna, and the communication distance of the communication signal is not less than 6 meters.

[0012] In some embodiments, the switching module includes at least two switches respectively connected between the at least two antenna matching circuits and the radio frequency chip, and the switches are used to control the on and off of the antenna matching circuit and the radio frequency chip.

[0013] In some embodiments, the device body includes a base and a machine that are combined together, the base and the machine are separable, the wireless communication module is provided on both the base and the machine, the radio frequency chip is used to obtain the combined status information of the base and the machine, and the switching module is used to switch the antenna matching circuit connected to the radio frequency chip according to the combined status information.

[0014] In some embodiments, the power module is used to send a communication signal to the antenna matching circuit at a fixed power.

[0015] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0016] The household appliance with switchable communication distance of the embodiment of the present disclosure includes a device body and a wireless communication module arranged on the device body, the wireless communication module includes a radio frequency chip, an antenna matching circuit unit and an antenna, the antenna matching circuit unit connects the radio frequency chip and the antenna, the radio frequency chip is configured with a power module, the antenna matching circuit unit includes a switching module and at least two antenna matching circuits, the at least two antenna matching circuits include a first antenna matching circuit and a second antenna matching circuit, the communication distance of the communication signal modulated by the first antenna matching circuit is greater than the communication distance of the communication signal modulated by the second antenna matching circuit, the radio frequency chip is used to obtain device type information and device status information, and the switching module is used to switch the antenna matching circuit connected to the radio frequency chip according to the device type information or the device status information. The wireless communication module can obtain device type information and device status information through the radio frequency chip, and then switch the antenna matching circuit connected to the radio frequency chip according to the device type information or device status information through the switching module, so that the currently used antenna matching circuit can meet the current communication distance requirements of the home appliance, and then send a communication signal to the antenna matching circuit unit through the power module, and the antenna matching circuit currently connected to the radio frequency chip modulates the communication signal of the corresponding communication distance according to the communication signal, and transmits the communication signal through the antenna, so that the home appliance can achieve flexible switching of short-distance and long-distance communication capabilities through only one wireless communication module, which not only reduces production costs but also improves circuit versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0018] Figure 1 A schematic diagram of the structure of a wireless communication module of a household appliance with switchable communication distance provided in an embodiment of the present disclosure;

[0019] Figure 2 A schematic diagram of the structure of an antenna matching circuit provided in an embodiment of the present disclosure;

[0020] Figure 3 A schematic diagram of the structure of another wireless communication module of a household appliance with switchable communication distance provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0021] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0022] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0023] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0024] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0025] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0026] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0027] In order to solve the above problems, the present disclosure provides a household appliance with switchable communication distance. Figures 1 to 3 The household appliance with switchable communication distance provided by the embodiment of the present disclosure is described in detail.

[0028] Figure 1 A schematic structural diagram of a wireless communication module in a household appliance with switchable communication distance provided by an embodiment of the present disclosure is shown.

[0029] like Figure 1As shown, the household appliance with switchable communication distance includes a device body and a wireless communication module arranged on the device body, and the wireless communication module may include a radio frequency chip 110, an antenna matching circuit unit 120 and an antenna 130, wherein the antenna matching circuit unit 120 connects the radio frequency chip 110 and the antenna 130, and the radio frequency chip 110 is configured with a power module 1101. The antenna matching circuit unit 120 may include a switching module and at least two antenna matching circuits, the at least two antenna matching circuits include a first antenna matching circuit a1202 and a second antenna matching circuit b1204, the switching module is used to switch the antenna matching circuit connected to the RF chip 110, the switching module includes at least two switches respectively connected between the at least two antenna matching circuits and the RF chip 110, the switching module may include a switch a1201 and a switch b1203, the switches are used to control the on-off of the antenna matching circuit and the RF chip 110, for example, the switch a1201 is used to control the on-off of the first antenna matching circuit a1202 and the RF chip 110; the switch b1203 is used to control the on-off of the second antenna matching circuit b1204 and the RF chip 110. The communication distance of the communication signal modulated by the first antenna matching circuit a1202 is greater than the communication distance of the communication signal modulated by the second antenna matching circuit b1204. The RF chip 110 is used to obtain device type information and device status information, and the switching module is used to switch the antenna matching circuit connected to the RF chip 110 according to the device type information or the device status information. The wireless communication module and the device body can be connected via serial communication so that the wireless communication module obtains the device type information and the device status information. Of course, it can be understood that the at least two antenna matching circuits can also include a larger number of antenna matching circuits, so that the communication distances of the communication signals modulated by each antenna matching circuit are different, and switching of multiple communication distances can be achieved.

[0030] Optionally, the antenna matching circuit may include a capacitor and an inductor, the operating frequency of the capacitor of the first antenna matching circuit a1202 is greater than the operating frequency of the capacitor of the second antenna matching circuit b1204, and / or the inductance of the first antenna matching circuit a1202 is lower than the inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204. The greater the power loss of the communication signal, the shorter the communication distance. Therefore, when the input communication signals are consistent, the communication signal modulated by the first antenna matching circuit a1202 has a greater communication distance than the communication signal modulated by the second antenna matching circuit b1204. Figure 2 A structural schematic diagram of an antenna matching circuit provided by an embodiment of the present disclosure is shown.

[0031] like Figure 2 As shown, the antenna matching circuit can use lossless devices such as capacitors and inductors. The antenna matching circuit can be used to transmit the received communication signal to the antenna to the maximum extent. The smaller the inductor value, the higher the self-resonant frequency. Generally, the self-resonant frequency of the selected inductor should be greater than twice the actual operating frequency, and it is actually less than 10nH. Because it is not desirable to introduce losses, an inductor with small parasitic capacitance is selected. Since the signal circuit is a high-frequency circuit, the capacitor is preferably a high-frequency capacitor, and a high-Q value and high-precision capacitor is selected.

[0032] Continue to refer to Figure 1 The RF chip 110 configures the power module 1101 through software, and the program controls the transmission and reception of wireless signals. The power module 1101 sends a communication signal to the antenna matching circuit unit 120 with a fixed power. The antenna matching circuit unit 120 includes at least two antenna matching circuits, and the antenna matching circuit includes a capacitor and an inductor. The at least two antenna matching circuits include a first antenna matching circuit a1202 and a second antenna matching circuit b1204. The operating frequency of the capacitor of the first antenna matching circuit a1202 is greater than the operating frequency of the capacitor of the second antenna matching circuit b1204, and / or the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204. The better the performance of the antenna matching circuit, the smaller the power loss of the communication signal. At this time, the signal transmitted through the antenna is stronger and the communication distance is longer. Conversely, the worse the performance of the antenna matching circuit, the higher the power loss of the communication signal, the worse the signal to the antenna, and the shorter the overall communication distance. Therefore, the communication distance of the communication signal modulated by the first antenna matching circuit a1202 is greater than the communication distance of the communication signal modulated by the second antenna matching circuit b1204.

[0033] Optionally, the antenna matching circuit includes a high-frequency capacitor and an inductor, and the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204.

[0034] In the embodiment of the present disclosure, the antenna matching circuit may include a high-frequency capacitor and an inductor. In this case, the first antenna matching circuit a1202 and the second antenna matching circuit b1204 both use high-frequency capacitors, and the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204, thereby making the communication distance of the communication signal modulated by the first antenna matching circuit a1202 greater than the communication distance of the communication signal modulated by the second antenna matching circuit b1204. For example, in a communication scenario where the communication distance is not less than 50 cm, high-frequency capacitors can be used for both the first antenna matching circuit a1202 and the second antenna matching circuit b1204, that is, the communication distances of the two antenna matching circuits are not less than 50 cm. At this time, the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204, so that there is a difference in the communication distances of the two communication signals and both are not less than 50 cm, such as the communication distance modulated by the second antenna matching circuit b1204 is 3 meters, and the communication distance modulated by the first antenna matching circuit a1202 is 6 meters. It can be understood that the first antenna matching circuit a1202 and the second antenna matching circuit b1204 both have high-frequency capacitors. They can be provided with high-frequency capacitors separately or they can share one high-frequency capacitor. The former requires the switch of the switching module to be set between the high-frequency capacitor and the RF chip 110 to achieve switching of different antenna matching circuits, and the latter requires the switch of the switching module to be set between the high-frequency capacitor and the inductor to achieve switching of different antenna matching circuits, that is, at least two inductors connected in parallel are connected to the high-frequency capacitor through a switch, and the high-frequency capacitor and any one of the inductors form a single antenna matching circuit.

[0035] Optionally, the antenna matching circuit includes a low-frequency capacitor and an inductor, and the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204.

[0036] In the embodiment of the present disclosure, the antenna matching circuit may include a low-frequency capacitor and an inductor. In this case, the first antenna matching circuit a1202 and the second antenna matching circuit b1204 both use low-frequency capacitors, and the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204, thereby making the communication distance of the communication signal modulated by the first antenna matching circuit a1202 greater than the communication distance of the communication signal modulated by the second antenna matching circuit b1204. For example, in a communication scenario where the communication distance does not exceed 50 cm, low-frequency capacitors can be used for both the first antenna matching circuit a1202 and the second antenna matching circuit b1204, that is, the communication distance of the two antenna matching circuits does not exceed 50 cm. At this time, the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204, so that there is a difference in the communication distances of the two communication signals and both do not exceed 50 cm, such as the communication distance modulated by the second antenna matching circuit b1204 is 30 cm, and the communication distance modulated by the first antenna matching circuit a1202 is 40 cm. It can be understood that the first antenna matching circuit a1202 and the second antenna matching circuit b1204 both have low-frequency capacitors. They can be provided with low-frequency capacitors separately or they can share one low-frequency capacitor. The former requires the switch of the switching module to be set between the low-frequency capacitor and the RF chip 110 to achieve switching of different antenna matching circuits, and the latter requires the switch of the switching module to be set between the low-frequency capacitor and the inductor to achieve switching of different antenna matching circuits, that is, at least two inductors connected in parallel are connected to the low-frequency capacitor through a switch, and the low-frequency capacitor and any one of the inductors form a single antenna matching circuit.

[0037] Figure 3 A schematic structural diagram of a wireless communication module of another household appliance capable of switching communication distances provided in an embodiment of the present disclosure is shown.

[0038] like Figure 3 As shown, the RF chip is used to obtain device type information and device status information, and the switching module is used to switch the antenna matching circuit connected to the RF chip according to the device type information or the device status information, such as selecting the corresponding antenna matching circuit by controlling the opening and closing of the switch.

[0039] For example, in a long-distance communication scenario, the communication distance is not less than 50 cm. The RF chip can turn on switch a and close switch b, and modulate the communication signal through the first antenna matching circuit a. The first antenna matching circuit a includes a high-frequency capacitor and an inductor, and transmits a communication signal with a difference in power loss and a communication distance of not less than 50 cm through antenna a, that is, long-distance communication is performed. At this time, the performance is strong, the power loss is small, the signal transmission capability is strong, and the communication distance is long.

[0040] For another example, in a short-distance communication scenario, the communication distance does not exceed 50 centimeters. The RF chip can turn on switch b and close switch a, and modulate the communication signal through the second antenna matching circuit b. The second antenna matching circuit b includes a low-frequency capacitor and an inductor, and transmits a communication signal with a difference in power loss through antenna b and a communication distance of no more than 50 centimeters. That is, short-distance communication is performed. At this time, the performance is poor, the power loss is high, the circuit signal transmission capability is weak, and the communication distance is short.

[0041] Therefore, the capacitor of the antenna matching circuit can be determined according to different communication distance ranges, and then the communication signal with a specific communication distance can be modulated within the communication distance range by selecting the inductor value, thereby improving the versatility of the circuit. By selecting different switches, both short-range and long-range communication capabilities can be achieved.

[0042] Optionally, at least two antenna matching circuits include a first antenna matching circuit a1202 and a second antenna matching circuit b1204, the second antenna matching circuit b1204 includes a low-frequency capacitor, the first antenna matching circuit a1202 includes a high-frequency capacitor, and the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204, so that the power loss of the communication signal modulated by the first antenna matching circuit a1202 is less than the power loss of the communication signal modulated by the second antenna matching circuit b1204.

[0043] In the embodiment of the present disclosure, at least two antenna matching circuits may include a second antenna matching circuit b1204 and a first antenna matching circuit a1202. The second antenna matching circuit b1204 can modulate communication signals for short-distance communication, and the first antenna matching circuit a1202 can modulate communication signals for long-distance communication. The second antenna matching circuit b1204 may include a low-frequency capacitor, and the first antenna matching circuit a1202 may include a high-frequency capacitor, and the inductor inductance of the first antenna matching circuit a1202 is lower than the inductor inductance of the second antenna matching circuit b1204.

[0044] In some embodiments of the present disclosure, the second antenna matching circuit b1204 transmits the communication signal of the RF chip to the antenna, and the communication distance of the communication signal does not exceed 40 centimeters, thereby realizing short-range communication.

[0045] In some other embodiments of the present disclosure, the first antenna matching circuit a1202 transmits the communication signal of the RF chip to the antenna, and the communication distance of the communication signal is not less than 6 meters, thereby realizing long-distance communication.

[0046] In some examples, an antenna matching circuit is fixedly selected based on user requirements.

[0047] For example, the household appliance is an electric rice cooker, and the communication control between the electric rice cooker and the mobile phone application (Application, App) / mini program requires long-distance communication, that is, the communication distance is not less than 6 meters. The radio frequency chip of the wireless communication module is used to read the product model code, product status and other information to the MCU of the electric rice cooker through serial port communication according to a preset program. The rice cooker is identified as an electric rice cooker through the code, that is, the radio frequency chip is used to obtain the device type information, and the switching module of the wireless communication module is used to turn on the long-distance antenna matching circuit switch according to the device type information, and work through the long-distance communication capability.

[0048] In other examples, the communication is switched between short-distance and long-distance according to the user's needs. Optionally, the device body includes a base and a machine that are combined, the base and the machine are separable, the base and the machine are both provided with the wireless communication module, the radio frequency chip is used to obtain the combined state information of the base and the machine, and the switching module is used to switch the antenna matching circuit connected to the radio frequency chip according to the combined state information.

[0049] For example, the household appliances are electric mops, floor scrubbers, etc. Taking the household appliances as an electric mop as an example, the electric mop includes a mop body and a charging base that are combined. The mop body is in a state of being combined with the charging base when charging, and the mop body is in a state of being separated from the charging base when in use. The two states have different requirements for communication distance. In this example, the mop body and the charging base are both provided with a wireless communication module. The wireless communication module can obtain the product model code from the mop body and the charging base, and read the status information of the mop body and the charging base. The mop body and the charging base need the wireless communication module to transmit information. When the mop body is inserted into the charging base, the spatial distance between the mop body and the charging base is very close (no more than 40 cm). The wireless communication module reads the status information of each body as the charging state. In order not to affect the quality of the communication signal, the communication module switches to the second antenna matching circuit b1204 for short-range communication through the switch for communication. When the mop body leaves the charging base to work, the wireless communication module reads the information status as not charging. At this time, it is judged that the mop body is in working state and is a certain distance away from the charging base. At this time, the communication module switches to the first antenna matching circuit a1202 for long-distance communication through the switch to communicate, so that the mop body and the charging base can communicate over long distances. That is, the matching antenna circuits of the communication module at different distances are switched by the combined status information of whether to charge, so as to achieve the purpose of switching different circuits for communication in different scenarios.

[0050] Optionally, the above-mentioned wireless communication module can also optimize the network environment and reduce the network pressure of the environment in which the wireless communication module product is located. The wireless communication module adopts the broadcasting method. When the long-distance antenna circuit sends the broadcast, the wireless communication signal will be transmitted to the environment over a large area. When there are many wireless devices in the environment and the frequency band is at 2.4G, the signals will interfere with each other, resulting in poor wireless transmission stability. When the short-range antenna circuit communicates, the signal is controlled within a very small range. Only devices within this very small range can receive the wireless communication signal, so this communication signal will not increase the complexity of the network environment, thereby improving the communication quality and stability.

[0051] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A household appliance with switchable communication distance, comprising a device body and a wireless communication module arranged on the device body, wherein the wireless communication module comprises a radio frequency chip, an antenna matching circuit unit and an antenna, wherein the antenna matching circuit unit connects the radio frequency chip and the antenna, and the radio frequency chip is configured with a power module, characterized in that: The antenna matching circuit unit includes a switching module and at least two antenna matching circuits, the at least two antenna matching circuits include a first antenna matching circuit and a second antenna matching circuit, the communication distance of the communication signal modulated by the first antenna matching circuit is greater than the communication distance of the communication signal modulated by the second antenna matching circuit, the radio frequency chip is used to obtain device type information and device status information, and the switching module is used to switch the antenna matching circuit connected to the radio frequency chip according to the device type information or the device status information.

2. The household appliance according to claim 1, characterized in that: The antenna matching circuit includes a capacitor and an inductor. The operating frequency of the capacitor of the first antenna matching circuit is greater than the operating frequency of the capacitor of the second antenna matching circuit, and / or the inductance of the inductor of the first antenna matching circuit is lower than the inductance of the inductor of the second antenna matching circuit, so that the power loss of the communication signal modulated by the first antenna matching circuit is less than the power loss of the communication signal modulated by the second antenna matching circuit.

3. The household appliance according to claim 1, characterized in that: The antenna matching circuit includes a high-frequency capacitor and an inductor, and the inductor inductance of the first antenna matching circuit is lower than the inductor inductance of the second antenna matching circuit, so that the power loss of the communication signal modulated by the first antenna matching circuit is smaller than the power loss of the communication signal modulated by the second antenna matching circuit.

4. The household appliance according to claim 1, characterized in that: The antenna matching circuit includes a low-frequency capacitor and an inductor, and the inductor inductance of the first antenna matching circuit is lower than the inductor inductance of the second antenna matching circuit, so that the power loss of the communication signal modulated by the first antenna matching circuit is smaller than the power loss of the communication signal modulated by the second antenna matching circuit.

5. The household appliance according to claim 1, characterized in that: The first antenna matching circuit includes a high-frequency capacitor, the second antenna matching circuit includes a low-frequency capacitor, and the inductor inductance of the first antenna matching circuit is lower than the inductor inductance of the second antenna matching circuit, so that the power loss of the communication signal modulated by the first antenna matching circuit is less than the power loss of the communication signal modulated by the second antenna matching circuit.

6. The household appliance according to claim 5, characterized in that: The second antenna matching circuit transmits the communication signal of the radio frequency chip to the antenna, and the communication distance of the communication signal does not exceed 40 centimeters.

7. The household appliance according to claim 5, characterized in that: The first antenna matching circuit transmits the communication signal of the radio frequency chip to the antenna, and the communication distance of the communication signal is not less than 6 meters.

8. The household appliance according to claim 1, characterized in that: The switching module includes at least two switches respectively connected between the at least two antenna matching circuits and the radio frequency chip, and the switches are used to control the on-off of the antenna matching circuit and the radio frequency chip.

9. The household appliance according to claim 1, characterized in that: The device body includes a base and a machine that are combined, the base and the machine are separable, the wireless communication module is provided on both the base and the machine, the radio frequency chip is used to obtain the combined status information of the base and the machine, and the switching module is used to switch the antenna matching circuit connected to the radio frequency chip according to the combined status information.

10. The household appliance according to claim 1, characterized in that: The power module is used to send a communication signal to the antenna matching circuit with a fixed power.

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