Electrical accessory equipment

Abstract

The invention provides an electric appliance accessory device. The electric appliance accessory device comprises a top part (10), a bottom part (105), an operation part (121), an induction part (104), a radio frequency transceiving part (103) and a control panel (102). The electric appliance accessory equipment further comprises an antenna assembly for receiving radio frequency signals, and the antenna assembly is coupled to the radio frequency receiving and transmitting part through one or more radio frequency transmission lines, can be combined to the induction part and is used as a local wireless communication antenna or a long-distance wireless link antenna. Or a multiplexing structure as a seat antenna included in the sensing unit. And the operation part, the induction part, the radio frequency transceiving part, the control panel and the antenna assembly are accommodated in the cylindrical cavity and are of a detachable structure convenient to disassemble. The induction part is arranged to be in contact with the rear wall of the bottom part so as to receive a wireless charging signal through the rear wall, and the antenna assembly is arranged adjacent to the rear wall. The electrical accessory equipment can be used independently, improves the data transmission efficiency, is convenient to carry, and simplifies the disassembly and assembly.

Description

[0001] This divisional application is a divisional application based on the Chinese invention patent application No. 201910483682.9, invention name “Electrical Accessory Equipment”, and application date June 5, 2019. Technical Field

[0002] The present invention mainly relates to an electrical accessory device, and in particular to an electrical accessory device with a detachable structure, wherein the data transmission efficiency of the electrical accessory device is improved. Background Art

[0003] Some electrical accessories have other electronic or digital functions in addition to basic electrical functions (such as power supply, on / off), such as smart electrical accessories. In some cases, smart electrical accessories can realize different application scenarios through built-in functional modules, so sometimes it is necessary to make these functional modules portable enough or at least simplify disassembly and assembly to realize these application scenarios. For example, when using the air detection function, it may be necessary to move the detection module to another location, or when using the voice input function, users are more inclined to use the voice recognition module by talking close to such detection modules.

[0004] When used as separate components, it is necessary to separately set up communication modules in these components. The best way is to set up a radio frequency antenna to wirelessly send and receive control signals, and at the same time, arrange another communication module in a base that is compatible with such separate components to transmit data information to the separate components. Sometimes, interactive data can be conveniently and efficiently transmitted through certain short-range communication methods (such as RFID, NFC protocols), so that the separate components can also be better designed into, for example, a waterproof packaging structure without any interface or data cable. For simultaneous long-distance wireless communication, there is unnecessary waste caused by repeated design, and the corresponding transmission power is relatively large.

[0005] For example, see Figure 3 The base shown in the figure has a frame 204 for fixing the internal structure so as to be installed in a concealed wall box, and an AC power source and a DC power source for wireless charging, for example, can be respectively arranged in the bottom box (having shells 206 and 301) and the lining plate 203, and the power source also includes surrounding components arranged in the lining plate 203. As a panel structure, the base has an outer frame 205 and a surface cover 201, and the surface cover 201 is used to cover the lining plate 203.

[0006] For example, such a separate component has a top 10 and a bottom 105 that are opposite to each other, and the top 10 and the bottom 105 are sealed and spliced ​​to form a cylindrical cavity, in which are arranged: an operating part 121 for being attached to the top 10 to constitute at least a part of the surface of the top; a sensing part 104, including metal wires stacked and arranged in the bottom 105, for sensing the electromagnetic coupling between the sensing source 202 close to the outside of the bottom 105 and the sensing part through the bottom 105; a radio frequency transceiver part 103 coupled to the sensing part 104, configured to use the sensing part to transmit and receive external radio frequency signals through the bottom 105; and a control board, configured to adjust the matching impedance of radio frequency transmission in response to detecting changes in the electromagnetic coupling of the sensing part 104 through the bottom.

[0007] Sometimes, the separate component further includes: a signal identification module coupled between the RF transceiver 103 and the control board 102, configured to generate a reception strength value based on the RF signal on the RF transceiver 103, and the control board is configured to detect the change in the electromagnetic coupling of the sensing unit 104 based on the generated reception strength value. In addition, the generated reception strength value includes the received RF signal strength, a clock associated with each signal strength, and the actual spatial location of the separate component associated with each signal strength. Summary of the invention

[0008] Since the far-field RF signal source has a long transmission distance and the near-field RF signal requires an adapter base, the electrical accessory devices in the prior art need to be improved in terms of data transmission efficiency and application scope.

[0009] The present invention provides an electrical accessory device, comprising: a top; a bottom, the top and the bottom are configured to be sealed and joined relative to each other to form a cylindrical cavity; an operating part, the operating part is configured to be attached to the top and constitute at least a part of the surface of the top; a sensing part, the sensing part includes metal wires stacked in the bottom for induction electromagnetic coupling; a radio frequency transceiver part, the radio frequency transceiver part is coupled to the sensing part for transmitting and receiving radio frequency signals; and a control board, the control board is configured to adjust the matching impedance of radio frequency transmission in response to detecting the change in electromagnetic coupling of the sensing part. The electrical accessory device also includes an antenna assembly for receiving radio frequency signals, and the antenna assembly is coupled to the radio frequency transceiver part through one or more radio frequency transmission lines. The operating part, the sensing part, the radio frequency transceiver part, the control board and the antenna assembly are accommodated in the cylindrical cavity, presenting a detachable structure that is easy to disassemble.

[0010] The electrical accessory device can be used independently or in combination with a near-field induction source or a far-field induction source. Moreover, the built-in antenna assembly improves data transmission efficiency, and the device is compact, easy to carry, and simple to disassemble and assemble.

[0011] Preferably, the antenna assembly is capable of selectively receiving a radio frequency signal transmitted from an external device.

[0012] The electrical accessory device may be used in conjunction with a remote field sensing source.

[0013] Preferably, the electrical accessory device further comprises an adaptor base, and the antenna assembly can selectively receive a radio frequency signal transmitted from an induction source in the adaptor base.

[0014] The electrical accessory device can be used in combination with a near-field induction source to receive a radio frequency signal sent from the induction source in the adapter base.

[0015] Preferably, the control board further comprises a radio frequency gain component coupled to the radio frequency transceiver unit, for forming or changing the radio frequency coupling gain.

[0016] The radio frequency gain component of the electrical accessory device improves the feedback signal strength, which is more conducive to identifying the impedance phase and amplitude, thereby better detecting the change in electromagnetic induction of the induction part and improving the data transmission efficiency or quality.

[0017] Preferably, the control board further comprises an impedance matching module coupled to the antenna of the antenna assembly, and the impedance matching module is dynamically adjusted in real time based on the impedance change of the impedance matching network.

[0018] The impedance matching mode impedance adjustment function is utilized to adapt to the changes in antenna load in different application scenarios.

[0019] Preferably, the antenna assembly can be coupled to the sensing portion to be used as a local wireless communication antenna or as a long-distance antenna link antenna.

[0020] The electrical accessory device provides a more compact integrated design and provides the option of using different types of antennas for different frequency bands or frequency band combinations.

[0021] Preferably, the antenna assembly extends from the bottom to the annular side wall of the operating portion and is coupled to the metal wire of the sensing portion.

[0022] The electrical accessory device provides a compact structural form of an antenna assembly.

[0023] Preferably, the antenna assembly is provided with a filter module to enhance the coverage of the wireless communication frequency band.

[0024] Due to the filter module being provided, the coverage of the wireless communication frequency band of the electrical accessory device is enhanced.

[0025] Preferably, the antenna assembly is provided with an adjustment module to tune the antenna on a specific communication frequency band.

[0026] Due to the provision of the adjustment module, the tuning capability of the antenna of the electrical accessory device on a specific communication frequency band is enhanced.

[0027] Preferably, the control board is configured to transmit a control signal to tune the antenna of the antenna assembly to cover a wider communication frequency band.

[0028] The electrical accessory device adapts to a wider communication frequency band.

[0029] Preferably, the RF transceiver section is directly coupled to the resonant element and the grounding portion of the antenna of the antenna assembly, or the RF transceiver section is coupled to a near-field coupling antenna feeding portion for indirectly feeding the resonant element of the antenna.

[0030] This electrical accessory device provides different antenna feeding methods.

[0031] Preferably, the electromagnetic induction coil of the induction part is placed in contact with the rear wall of the bottom and the resonance element of the antenna surrounds the inner surface of the rear wall to receive the wireless charging signal through the dielectric rear wall.

[0032] The electrical accessory device provides a specific antenna feeding method.

[0033] Preferably, one or more of a light sensor, a proximity sensor, and a touch sensor are installed on the rear wall of the bottom.

[0034] This electrical accessory equipment is multifunctional.

[0035] Preferably, the control board includes a baseband processing module, a storage module and a control circuit for controlling the wireless communication module to transmit and / or receive radio frequency signals.

[0036] The control board provides a variety of processing functions to enhance the applicability of this electrical accessory device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Some embodiments of the present disclosure are described in more detail in the accompanying drawings, in which

[0038] Figure 1 is a schematic exploded view of an electrical accessory device according to the present invention;

[0039] Figure 2 is a partial assembly diagram of an electrical accessory device according to the present invention;

[0040] Figure 3The electrical appliance accessory device according to the present invention and an adapter base of the prior art that can be used in conjunction with the electrical appliance accessory device are shown. DETAILED DESCRIPTION

[0041] Figure 1 The exploded view of the electrical accessory device according to the present invention is schematically shown. The electrical accessory device comprises: a top 10; a bottom 105, wherein the top and the bottom are configured to be oppositely sealed and joined to form a cylindrical cavity; an operating portion 121, wherein the operating portion is configured to be attached to the top 10 and constitute at least a part of the surface of the top; a sensing portion 104, wherein the sensing portion comprises metal wires stacked in the bottom 105 for inductive electromagnetic coupling, a radio frequency transceiver portion 103, wherein the radio frequency transceiver portion is coupled to the sensing portion 104 for transmitting and receiving radio frequency signals; and a control board 102, wherein the control board is configured to adjust the matching impedance of radio frequency transmission in response to detecting the change in the electromagnetic coupling of the sensing portion 104. The electrical accessory device also comprises an antenna assembly for receiving radio frequency signals, wherein the antenna assembly is coupled to the radio frequency transceiver portion 103 via one or more radio frequency transmission lines. The operating unit 121 , the sensing unit 104 , the RF transceiver unit 103 , the control board 102 and the antenna assembly are accommodated in the cylindrical cavity, presenting a detachable structure that is easy to disassemble.

[0042] When the voice signal recognition module 131 is provided in the cylinder 101 of the operation portion 121, the electrical accessory device can be used as a speaker (see Figure 1 ). Figure 2 Schematically shows Figure 1 Partial assembly drawing of the electrical accessory equipment shown.

[0043] When a detection device is provided in the barrel 101 of the operating portion 121, the electrical accessory device can be used as a detection means.

[0044] The antenna assembly can selectively receive radio frequency signals sent from an external device. The antenna assembly can selectively receive radio frequency signals from an adapter base (see Figure 3 ) in the induction source 202.

[0045] The control board 102 is configured to detect the change in the electromagnetic coupling of the sensing part 104 by determining whether the signal strength meets the preset signal strength interval. To this end, the illustrated separate component is further provided with an antenna assembly in the annular side wall extending from the bottom 105 to the operating part 121 and coupled to the metal wire. In one example, the metal wire can be applied to the inner side of the bottom 105. In addition, the antenna assembly is also connected to one or more radio frequency transmission lines to couple the radio frequency transceiver 103 to these antenna assemblies.

[0046] As an improvement, the sensing unit 104 is configured to form a gain between the separate component and the base when the user places the separate component. To this end, the control board 102 also includes: an RF gain component coupled to the RF transceiver unit 103, which is used to form or change the RF coupling gain between the RF gain component and the component for achieving impedance matching. At the same time, the RF transceiver unit 103 is also used to obtain the RF feedback signal received on the RF gain component. Among them, the control board is further configured to: collect the impedance phase and amplitude identification values ​​of the sensing unit 104 based on the feedback signal received by the RF transceiver unit on the gain component; and detect the electromagnetic induction change of the sensing unit 104 based on the collected phase and amplitude identification values.

[0047] Based on this, an antenna assembly is used to receive radio frequency signals from an external device or an adapter base through the at least partially conductive bottom 105, and the control board 102 collects and stores reception strength values ​​and corresponding acquisition times based on the received radio frequency feedback signals, accumulates user behavior statistics associated with the user's operation of the electrical accessory over time, processes the accumulated user behavior statistics, the stored signal strength values, and the stored signal strength acquisition times to generate a trigger event, and adjusts the corresponding matching impedance in response to the trigger event.

[0048] Among them, user usage patterns represented by certain user behavior statistics are filtered out from the stored signal strength values ​​to generate new reception strength values; and trigger events are detected more accurately based on the reception strength values.

[0049] Among them, adjusting the matching impedance includes: obtaining an additional receiving strength value from the received RF feedback signal when the current impedance is detected, and determining the electromagnetic induction change of the antenna component based on the additional receiving strength value; in response to determining the electromagnetic induction change of the antenna component, controlling the RF transceiver unit 103 to detect the additional matching impedance and storing the matching settings associated with the adjusted additional matching impedance on the storage module.

[0050] The sensing unit 104 may include an induction coil and a wireless power receiver for receiving wirelessly transmitted power from a wireless power adapter. In order to support wireless communication, the sensing unit 104 may include a transceiver module formed by one or more integrated modules, a power amplifier module, a low noise input amplifier, a passive RF component, one or more antennas, a transmission line, and other modules for processing RF signals. Wireless signals may also be sent using, for example, infrared light. The sensing unit 104 may include a radio frequency transceiver module for processing various radio frequency communication bands, for example, the transceiver module may be a wireless local area network transceiver module that can process the 2.4~5 GHz band for IEEE 802.11 communication and can process the 2.4 GHz communication band. The transceiver unit can use a cellular network to handle wireless communications within various frequency ranges, such as a low communication band from 700 MHz to 960 MHz, a mid-band from 1400 MHz or 1500 MHz to 2170 MHz (for example, a mid-band with a peak of 1700 MHz), and a high frequency band from 2170 MHz or 2300 MHz to 2700 MHz, for example, a high frequency band with a peak of 2400 MHz, or other communication bands between 700 MHz and 2700 MHz, or other suitable frequencies.

[0051] The control board 102 may also be configured to process voice / non-voice data. Sometimes, the wireless communication module may include other short / long-range wireless modules. For example, the wireless communication module may include a 60GHz transceiver module, a module for receiving streaming media signals and radio signals, a near field communication (NFC) transceiver module (e.g., an NFC transceiver operating at 13.56MHz or other suitable frequencies), etc. In near-field wireless transmission with the base, wireless signals are generally used to transmit data within a range of tens or hundreds of centimeters.

[0052] The sensing portion 104 may also include a multiplexing structure as an antenna. Any suitable antenna type may be used to form the above antenna component. For example, the antenna may include an antenna having a resonant element, formed by a loop antenna structure, a patch antenna structure, an inverted F-shaped antenna structure, a slot antenna structure, a planar inverted F-shaped antenna structure, a spiral antenna structure, a monopole antenna structure, a dipole antenna structure, etc. Different types of antennas are used for different frequency bands or frequency band combinations. For example, one type of antenna may be used when used as an antenna for local wireless communication, and another type of antenna may be used when forming a long-distance wireless link antenna. Preferably, design space within the electrical accessory device can be saved by using a single antenna to handle two or more different communication bands. For example, a single antenna in the device may be used to handle a 2.4 GHz communication band, a 1575 MHz GPS communication band, and / or a cellular network communication band such as one or more cellular bands of 700-960 MHz, 1400~2170 MHz, and 2170~2700 MHz. In practice, the overall size required for the antenna increases as the operating frequency decreases (i.e., as the corresponding wavelength increases). Furthermore, in compact designs such as discrete components (e.g., smaller and more aesthetically pleasing form factors), the volume of the cavity is indeed limited, and it may be difficult to provide effective antenna coverage for compact electronic devices in all communication bands, especially for relatively low frequencies (i.e., relatively long wavelengths), such as low-band cellular network frequencies of 700 to 960 MHz.

[0053] In one embodiment, the sensing portion 104 may also be directly coupled to the control board, and the control board 102 may be further coupled to the operating portion 121. The operating portion 121 may provide an output from the base and may receive an input source from outside the base. The antenna may be provided with a filter module (e.g., one or more passive filters and / or tunable filters) to enhance the coverage of the wireless communication band. Capacitors, inductors, and resistors may be incorporated into the filter module. Capacitors, inductors, and resistors may also be used as part of the above-mentioned antenna by a printed circuit board structure. Sometimes, the antenna may be provided with one or more adjustment modules to tune the antenna on a specific communication band. The tuning module may include tunable inductors, capacitors, or other components. These components may be based on switches and networks of the following: fixed components, distributed metal structures that produce associated distributed capacitance and inductance, variable structures for producing variable capacitance values ​​and inductance values, tunable filters, or other suitable tunable structures.

[0054] During operation of the electrical accessory, the control board 102 may send control signals on one or more circuit components to adjust the inductance, capacitance, or other parameters associated with the tunable components, thereby tuning the antenna to cover a wider communication frequency band. The signal component may be a component transmission line having a first antenna and a second antenna, respectively. The signal component may be a positive signal line and may be a ground signal line. The first antenna and the second antenna may form part of a coaxial cable, a stripline transmission line, and / or a microstrip transmission line. A matching network formed by an inductor, a resistor, and a capacitor may be used to match the impedance of the antenna to the impedance of the output component. The matching network may be provided as a separate component or as a conductive line on a housing, a printed circuit board, a bracket, or the like. The matching network may be inserted into the antenna, for example. Sometimes, the matching network may also be adjusted using a control signal received from the control board 102. For example, such components may also be used to form a filter module in an antenna.

[0055] The RF transceiver section 103 may be directly coupled to the resonant element and ground of the antenna, or may be coupled to a near-field coupled antenna feed section for indirectly feeding the resonant element of the antenna. For example, the antenna may form an inverted F-shaped antenna, a loop antenna, a patch antenna, a slot antenna, or an antenna feed section having a positive antenna feed terminal and a ground antenna feed terminal. The positive emitter may be coupled to the positive antenna feed section and the grounded emitter may be coupled to the grounded antenna feed section. Sometimes, the antenna may include an antenna resonant element that is indirectly fed using near-field coupling. In a near-field coupling arrangement, the RF transceiver section 103 is coupled to a near-field coupled antenna feed section for indirectly feeding an antenna structure such as an antenna resonant element. In general, any suitable antenna feeding arrangement may be used.

[0056] In one embodiment, the conductive portion of the antenna may be shorted to the outer side wall of the metal. For example, the grounding portion of the antenna may include the conductive portion and the metal housing side wall. The conductive portion may be formed using a metal foil, a conductive wire on a flexible printed circuit board, and a metal housing portion. The bottom 105 rear wall may be made of any suitable dielectric material. For example, it may be made of plastic, glass, ceramic, wood, polymer, or a combination thereof. The bottom 105 may be optically opaque / transparent or both. Sometimes, the bottom 105 rear wall of the device may include a combination of conductive and insulating materials. For example, a portion of the rear wall may be made of metal and another portion may be formed of a dielectric. The dielectric portion of the rear wall may, for example, include a metal frame within the conductive portion. Sometimes, the rear wall may include multiple metal frames. Preferably, one or more such as light sensors, proximity sensors, touch sensors, etc. may be installed in the rear wall.

[0057] For example, the resonant element of the antenna may be formed around the periphery of the rear wall. In one suitable arrangement, the coil of the induction portion 104 is placed in contact with the rear wall of the bottom 105 to receive the wireless charging signal through the dielectric rear wall. In this case, the resonant element of the antenna may surround the electromagnetic induction coil at the inner surface of the rear wall. In this way, by forming the antenna component adjacent to the rear wall, the vertical height of the device can be shorter than in the case where the antenna resonant element is located elsewhere in the device and the antenna's transceiver efficiency remains essentially unchanged. Forming the antenna along the back side of the device can also reduce the inactive area of ​​the operating portion 121, because the antenna can transmit radio frequency signals through the back side of the device without worrying that the signal will be blocked by the operating module on the operating portion 121.

[0058] The electric field amplitude generated by the antenna is highest in the space between the detachable component and the base. The signal can propagate along the surface of the resonant element and the base in a direction away from the detachable component, so that the wireless signal is properly received by the external communication device, even if the antenna is close to the base and generally pointed away from the external communication device. In fact, the base can be used to enhance the propagation of electromagnetic waves relative to the situation where the base is not present. For example, in the absence of the base, the radio frequency signal transmitted by the antenna may be interfered. However, in the presence of the base, the signal can be properly guided to improve communication efficiency.

[0059] But sometimes this design may produce impedance discontinuity between the antenna and the wireless communication module. Impedance discontinuity can cause some RF energy to be reflected at the boundary between the antenna and the surrounding components of the wireless communication module instead of being used to transmit signals with external devices. If these reflections are not compensated, the antenna may be detuned over time, thereby reducing the overall antenna efficiency and communication quality during normal operation of the device. In order to compensate for these antenna impedance changes, the control board 102 is configured to control the impedance matching module coupled to the antenna to ensure that the antenna matches the surrounding components of the inductive part regardless of how the antenna is loaded through the back wall. Sometimes, in addition to adding an adjustable impedance matching module, the control board 102 can adjust the tunable component to cover a wider communication band and compensate for the antenna detuning caused by interference of external objects to the antenna. The control board 102 can use any required information to determine when and how to adjust the adjustable impedance matching module to compensate for changes in the antenna. For example, the control board 102 can adjust the impedance matching module based on instructions received from an external wireless access point (WAP). Alternatively, the control board 102 can adjust the impedance matching module based on the current operating state of the device. For example, the control board 102 may identify a usage scenario (e.g., whether the detachable component is being used to browse content, make a phone call, receive voice information, etc.) to determine how to adjust the impedance matching module. As another example, the control board 102 may identify, for example, an optical sensor, a proximity sensor, a touch sensor, data indicating that the user is close to a rear wall, etc., for identifying how to adjust the impedance matching module. As yet another example, the control board 102 may collect a characterization signal for identifying how to adjust the antenna performance of the impedance matching module. Sometimes, statistical values ​​of user habit information about the device may also be processed to determine how to adjust the impedance matching circuit.

[0060] The control board 102 may include a baseband processing module, a storage module, and a control circuit for controlling the wireless communication module to transmit and / or receive radio frequency signals. When in use, the digital data signal transmitted by the electrical accessory device may be generated by one or more baseband processors. The baseband processor may modulate the digital signal according to a preset communication protocol and may provide a corresponding output signal for transmission to the radio frequency transceiver. In an example, the radio frequency transceiver 103 may also include a mixer to convert the output signal to radio frequency and transmit the radio frequency signal to the radio frequency power amplifier module. Sometimes, the radio frequency transceiver 103 may include an A / D converter that converts the output signal to a corresponding analog signal. The control board 102 may also be configured to adjust the bias voltage provided to the radio frequency power amplifier module. The bias voltage may be used as a power supply voltage for one or more active power amplifier stages in the radio frequency power amplifier module. During wireless data transmission, the radio frequency power amplifier module may amplify the output power of the transmitted signal to a sufficiently high level to ensure sufficient signal transmission strength.

[0061] The output of the RF power amplifier module can be coupled to the RF front end through a RF coupler. The front end may include an adjustable impedance matching module of an adjustable matching network. The impedance matching module may include passive and / or active adjustable components, such as an RLC network composed of resistors, inductors and capacitors, and such adjustments are used to ensure impedance matching between the antenna and the surrounding components of the RF power amplifier module. The control board 102 can provide control signals to the adjustable impedance matching module in the front end.

[0062] In some cases, the control board 102 controls the impedance matching module to present a specific predetermined matching impedance that is based solely on the frequency of the signal to be transmitted on the antenna. For example, the control board 102 may store initialization calibration data for the matching module that identifies a specific setting of the impedance matching module corresponding to each possible operating frequency. When the control board 102 determines a frequency to be used for wireless communication, the impedance matching module is placed in the corresponding setting identified by the initialization calibration data.

[0063] The control board 102 can perform dynamic adjustments to the impedance matching module in real time based on the antenna transmitting through the back wall. For example, when the base is close to the antenna, the antenna components can be activated so that the impedance of the antenna is no longer matched to the device 4. The control board 102 can control the impedance of the adjustable impedance matching network to match the antenna activation triggered by the base. When the impedance matching network matches the antenna, the detuning caused by the change in antenna load can be alleviated and the antenna efficiency can be maximized. As another example, when the device is oriented relative to the base, a different impedance match is presented.

[0064] The impedance phase and amplitude of the antenna can be used to determine whether the operation of the antenna has been affected by the operating environment of the device, such as whether an external object has detuned or changed the load of the antenna. The control board 102 can detect changes in the collected phase and amplitude information to identify when the antenna is detuned / loaded by interference from an external object. If the control board 102 detects that the antenna is detuned due to the antenna, a control signal can be sent to adjust the impedance matching network to compensate for this detuning.

[0065] The invention is not limited to the above described embodiments, but many variations are possible within the scope of the inventive concept defined by the following claims. Within the scope of the inventive concept, properties of different embodiments and applications can be used in combination with properties of another embodiment or application.

Claims

1. An electrical accessory device, comprising: top(10); A bottom portion (105), the top portion and the bottom portion being configured to be oppositely and sealingly engaged to form a cylindrical cavity; An operating portion (121), the operating portion being configured to be attached to the top portion (10) and constituting at least a portion of a surface of the top portion; an induction portion (104), the induction portion comprising metal wires stacked in the bottom portion (105) for induction electromagnetic coupling, A radio frequency transceiver unit (103), the radio frequency transceiver unit is coupled to the sensing unit (104) and is used to transmit and receive radio frequency signals; A control board (102), the control board being configured to adjust the matching impedance of radio frequency transmission in response to detecting a change in the electromagnetic coupling of the induction part (104); It is characterized in that The electrical accessory device also includes an antenna component for receiving radio frequency signals. The antenna component is coupled to the radio frequency transceiver unit (103) via one or more radio frequency transmission lines, and can be combined with the sensing unit (104) to serve as a local wireless communication antenna or a long-distance wireless link antenna, or as a multiplexing structure of the seat antenna included in the sensing unit (104). The operating unit (121), the sensing unit (104), the radio frequency transceiver unit (103), the control panel (102) and the antenna assembly are accommodated in the cylindrical cavity, forming a detachable structure that is easy to disassemble. The sensing portion (104) is arranged to contact the rear wall of the bottom (105) to receive the wireless charging signal through the rear wall, and the antenna assembly is arranged adjacent to the rear wall.

2. The electrical accessory device according to claim 1, characterized in that: The antenna assembly can selectively receive a radio frequency signal transmitted from an external device.

3. The electrical accessory device according to claim 1, characterized in that: The antenna assembly is configured as a single antenna to process two or more different communication frequency band signals.

4. The electrical accessory device according to any one of claims 1 to 3, characterized in that: The control board (102) also includes a radio frequency gain component coupled to the radio frequency transceiver unit (103) and used to form or change a radio frequency coupling gain.

5. The electrical accessory device according to any one of claims 1 to 3, characterized in that: The control board (102) also includes an impedance matching module coupled to the antenna of the antenna assembly, and the impedance matching module is dynamically adjusted in real time based on the impedance change of the impedance matching network.

6. The electrical accessory device according to any one of claims 1 to 3, characterized in that: The antenna assembly is provided with a filter module to enhance the coverage of the wireless communication frequency band.

7. The electrical accessory device according to any one of claims 1 to 3, characterized in that: The radio frequency transceiver section (103) is directly coupled to the resonance element and the grounding section of the antenna of the antenna assembly, or the radio frequency transceiver section (103) is coupled to a near-field coupling antenna feeding section for indirectly feeding the resonance element of the antenna.

8. The electrical accessory device according to any one of claims 1 to 3, characterized in that: One or more of a light sensor, a proximity sensor, and a touch sensor are installed on the rear wall of the bottom (105).

9. The electrical accessory device according to any one of claims 1 to 3, characterized in that: The control board (102) comprises a baseband processing module, a storage module and a control circuit for controlling the wireless communication module to transmit and / or receive radio frequency signals.

Images