Antenna adjustment system for smart wearable device and smart wearable device

Abstract

The present application discloses an antenna adjustment system for a smart wearable device and a smart wearable device, which uses a detection module installed on the device body of the smart wearable device to obtain the conductivity parameters of the wearable accessories installed on the device body and then inputs them into an antenna adjustment processor. The antenna adjustment processor controls the antenna tuning circuit provided between the antenna signal source of the smart wearable device and the antenna body of the smart wearable device according to the conductivity parameters of the wearable accessories to adjust the impedance matching state of the antenna body, so that the smart wearable device can still ensure the high efficiency of the antenna operation after the wearable accessories are replaced, thereby improving the compatibility of the antenna of the smart wearable device with the wearable accessories, allowing users to freely replace wearable accessories without worrying about the problem of reduced antenna efficiency, and optimizing the user experience.

Description

Technical Field

[0001] The present application relates to the field of antenna design for smart wearable devices, and in particular to an antenna adjustment system for smart wearable devices and a smart wearable device. Background Art

[0002] In smart wearable devices, such as smart watches and smart bracelets, antennas are crucial components for transmitting and receiving wireless signals. To maximize antenna efficiency, the design process requires designing antenna parameters based on the materials and assembly structure of the device's other components.

[0003] To meet the personalized needs of users, smart wearable device accessories (such as watch straps) are often replaceable. Users can purchase their favorite third-party accessories to replace their original ones. However, because accessories can affect the efficiency of smart wearable device antennas, if the replacement accessories are made of different materials or structures than the original, the efficiency of the factory-designed antenna will be reduced.

[0004] Solving the problem of poor compatibility between antennas of smart wearable devices and wearable accessories and optimizing the user experience are issues that need to be addressed by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide an antenna adjustment system for a smart wearable device and a smart wearable device, which is used to identify replaced wearable accessories and automatically adjust the matching of the antenna to ensure antenna efficiency, so that the antenna can be compatible with a variety of wearable accessories and optimize the user experience.

[0006] To solve the above technical problems, the present application provides an antenna adjustment system for a smart wearable device, comprising: a detection module, an antenna tuning circuit and an antenna adjustment processor;

[0007] The detection module is installed in the device body of the smart wearable device and is used to obtain the conductivity parameter of the wearable accessory installed in the device body. The conductivity parameter output end of the detection module is connected to the conductivity parameter receiving end of the antenna adjustment processor.

[0008] The antenna tuning circuit is provided between the antenna signal source of the smart wearable device and the antenna body of the smart wearable device;

[0009] The antenna adjustment signal output end of the antenna adjustment processor is connected to the control end of the antenna tuning circuit, and the antenna adjustment processor is used to control the antenna tuning circuit to adjust the impedance matching state of the antenna body according to the conductivity parameter.

[0010] Optionally, the detection module specifically includes: a DC power supply, a voltage divider circuit and at least two test terminals;

[0011] Among them, the test terminal is arranged at the connection point between the device body and the wearable accessory, and is used to connect the wearable device to the test loop formed by the voltage divider circuit and the DC power supply. The multiple voltage divider points in the test loop are the conductivity parameter output ends of the detection module.

[0012] Optionally, the voltage divider circuit specifically includes: a first voltage divider resistor and a second voltage divider resistor;

[0013] The test terminal connects the first end of the wearable accessory to the positive electrode of the DC power supply, connects the second end of the wearable accessory to the first end of the first voltage divider resistor, connects the second end of the first voltage divider resistor to the first end of the second voltage divider resistor, and connects the second end of the second voltage divider resistor to the negative electrode of the DC power supply.

[0014] Optionally, the first end of the first resistor and the first end of the second resistor are conductivity parameter output ends of the detection module;

[0015] The values ​​of the conductivity parameters of the wearable accessory specifically include: a first conductivity parameter, a second conductivity parameter, and a third conductivity parameter;

[0016] The resistance value of the first voltage-dividing resistor, the resistance value of the second voltage-dividing resistor, the first conductivity parameter, the second conductivity parameter, and the third conductivity parameter satisfy the following conditions:

[0017]

[0018]

[0019] V0·R2<V H ·(R C +R1+R2),

[0020] R C1 >R C2 >R C3 ,

[0021] Wherein, R1 is the resistance value of the first voltage-dividing resistor, R2 is the resistance value of the second voltage-dividing resistor, R C is the conductivity parameter, R C1 is the first conductivity parameter, R C2 is the second conductivity parameter, R C3 is the third conductivity parameter, V0 is the voltage of the DC power supply, V H A high level voltage is provided at a conductive parameter receiving end of the antenna adjustment processor.

[0022] Optionally, the smart wearable device is specifically a smart watch or a smart bracelet, the wearable accessory is specifically a watch strap, and a pair of the test terminals are respectively provided at both ends of a lug of the device body.

[0023] Optionally, the antenna tuning circuit specifically includes a switching module and a plurality of impedance matching circuits;

[0024] Among them, the control end of the switching module is connected to the antenna adjustment signal output end of the antenna adjustment processor, the static contact of the switching module is connected to the antenna body, the moving contact of the switching module is connected one-to-one with the output end of the impedance matching circuit, and the input end of each impedance matching circuit is connected to the antenna signal source.

[0025] Optionally, the antenna tuning circuit is specifically a circuit built based on a variable capacitance module and / or a variable inductance module.

[0026] Optionally, it also includes a baseband processing circuit and a radio frequency circuit;

[0027] The antenna adjustment processor is specifically a wireless signal microprocessor of the smart wearable device;

[0028] Among them, the input end of the baseband processing circuit is connected to the antenna signal output end of the wireless signal microprocessor, the output end of the baseband processing circuit is connected to the input end of the radio frequency circuit, and the output end of the radio frequency circuit is the antenna signal source.

[0029] Optionally, the antenna adjustment signal output terminal of the antenna adjustment processor is specifically a general input and output interface or a mobile industry processor interface.

[0030] In order to solve the above technical problems, the present application also provides a smart wearable device, including the antenna adjustment system of any one of the smart wearable devices described above.

[0031] The antenna adjustment system of the smart wearable device provided in the present application utilizes a detection module installed on the device body of the smart wearable device to obtain the conductivity parameters of the wearable accessories installed on the device body and then inputs the conductivity parameters into the antenna adjustment processor. The antenna adjustment processor controls the antenna tuning circuit provided between the antenna signal source of the smart wearable device and the antenna body of the smart wearable device according to the conductivity parameters of the wearable accessories to adjust the impedance matching state of the antenna body, so that the smart wearable device can still ensure the high efficiency of the antenna operation after the wearable accessories are replaced, thereby improving the compatibility of the antenna of the smart wearable device with the wearable accessories, allowing users to freely replace wearable accessories without worrying about the problem of reduced antenna efficiency, and optimizing the user experience.

[0032] The present application also provides a smart wearable device having the above-mentioned beneficial effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A schematic diagram of the structure of an antenna adjustment system for a smart wearable device provided in an embodiment of the present application;

[0035] Figure 2 A circuit diagram of a detection module provided in an embodiment of the present application;

[0036] Figure 3 A circuit diagram of an antenna tuning circuit provided in an embodiment of the present application;

[0037] Wherein, 101 is a detection module, 102 is an antenna tuning circuit, and 103 is an antenna adjustment processor. DETAILED DESCRIPTION

[0038] The core of this application is to provide an antenna adjustment system for a smart wearable device and a smart wearable device, which are used to identify replaced wearable accessories and automatically adjust the matching of the antenna to ensure antenna efficiency, so that the antenna can be compatible with a variety of wearable accessories and optimize the user experience.

[0039] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.

[0040] Example 1

[0041] Figure 1 A schematic structural diagram of an antenna adjustment system for a smart wearable device provided in an embodiment of the present application.

[0042] like Figure 1 As shown, the antenna adjustment system of the smart wearable device provided in the embodiment of the present application includes: a detection module 101, an antenna tuning circuit 102 and an antenna adjustment processor 103;

[0043] The detection module 101 is installed in the device body of the smart wearable device and is used to obtain the conductivity parameter of the wearable accessory installed in the device body. The conductivity parameter output terminal of the detection module 101 is connected to the conductivity parameter receiving terminal of the antenna adjustment processor 103;

[0044] The antenna tuning circuit 102 is provided between the antenna signal source of the smart wearable device and the antenna body of the smart wearable device;

[0045] The antenna adjustment signal output terminal of the antenna adjustment processor 103 is connected to the control terminal of the antenna tuning circuit 102. The antenna adjustment processor 103 is used to control the antenna tuning circuit 102 to adjust the impedance matching state of the antenna body according to the conductivity parameter.

[0046] In a specific implementation, the antenna adjustment system for the smart wearable device provided in the embodiments of the present application, as part of the control circuit of the smart wearable device, can generally be embedded within the device body of the smart wearable device, and the wearable accessories can be detachably connected to the device body. For example, if the smart wearable device is a smart watch or smart bracelet, the wearable accessories can be a watch strap, the device body is the watch face, and the watch strap is detachably connected to the lugs on both sides of the watch face. The antenna adjustment system for the smart wearable device provided in the embodiments of the present application can also be applied to other smart wearable devices with detachably connected wearable accessories.

[0047] The conductivity parameters of a wearable accessory are typically determined by its material and structure, which can affect the antenna matching of a smart wearable device. The antenna adjustment system for a smart wearable device provided in this embodiment of the application includes a detection module 101 to obtain the conductivity parameters of the wearable accessory, such as resistance. Detection module 101 can obtain the conductivity parameters of the wearable accessory using either contact or non-contact methods.

[0048] If a contact method is used, the detection module 101 can directly use a resistance measurement circuit to obtain the resistance value of the wearable accessory. There are many types of resistance measurement circuits, such as ohmmeter resistance measurement circuits, voltage divider circuits, volt-ampere resistance measurement circuits, bridge circuits, half-bias resistance measurement circuits, equivalent substitution method resistance measurement circuits, etc. A resistance measurement circuit with a smaller structure suitable for embedding in the device body of the smart wearable device can be selected. If a non-contact method is used, the detection module 101 can use a sensor to indirectly obtain the resistance value of the wearable accessory. Since the sensor is easily affected by other factors when obtaining the conductivity parameter, it is preferred to use a contact method to obtain the resistance value of the wearable accessory.

[0049] In the antenna adjustment system of the smart wearable device provided in an embodiment of the present application, the antenna tuning circuit 102 is arranged between the antenna signal source of the smart wearable device and the antenna body of the smart wearable device, and is used to adjust the impedance matching state of the antenna body under the control of the antenna adjustment processor 103.

[0050] For smart wearable devices, the antenna adjustment processor 103 in the antenna adjustment system of the smart wearable device provided in the embodiment of the present application adopts a microprocessor, and its antenna adjustment signal output terminal can specifically adopt a general purpose input and output (GPIO) interface or a mobile industry processor (MIPI) interface. The antenna adjustment processor 103 pre-stores the correspondence between conductivity parameters and antenna adjustment parameters, for example, different resistance values ​​correspond to the impedance values ​​to be matched by the antenna body. Therefore, it is necessary to pre-design the detection module 101 and the antenna tuning path according to the possible conductivity parameter matching of the wearable accessory, as well as the correspondence stored in the antenna adjustment processor 103.

[0051] The antenna adjustment system of the smart wearable device provided in the embodiment of the present application adds an antenna tuning circuit 102 to the control circuit of the original smart wearable device. The antenna signal source, antenna tuning circuit 102 and antenna body constitute the radio frequency path of the smart wearable device. In order to improve the degree of device integration, the antenna adjustment processor 103 can adopt the original wireless signal microprocessor (MCU / AP) of the smart wearable device. The wireless signal microprocessor is the core processor in the smart wearable device for realizing wireless signal transmission and reception and data processing. The wireless signal microprocessor is used as the antenna adjustment processor 103 in the antenna adjustment system of the smart wearable device provided in the embodiment of the present application. Then, the vacant pins of the wireless signal microprocessor are selected as the conductivity parameter receiving end and the antenna adjustment signal output end, which are respectively connected to the conductivity parameter output end of the detection module 101 and the control end of the antenna tuning circuit 102. On this basis, the antenna adjustment system of the smart wearable device provided in the embodiment of the present application may also include: a baseband processing circuit and a radio frequency circuit; wherein the input end of the baseband processing circuit is connected to the antenna signal output end of the wireless signal microprocessor, the output end of the baseband processing circuit is connected to the input end of the radio frequency circuit, and the output end of the radio frequency circuit is the antenna signal source. The baseband processing circuit, the radio frequency circuit, the antenna tuning circuit 102 and the antenna body constitute the radio frequency path of the smart wearable device. The transmission signal of the antenna signal output end of the wireless signal microprocessor is transmitted through the radio frequency path, and the antenna signal received by the antenna body is transmitted to the wireless signal microprocessor through the radio frequency path. The wireless signal microprocessor also determines the impedance matching target of the antenna body according to the conductivity parameters detected by the detection module 101, and controls the antenna tuning path to adjust the impedance matching state of the antenna body, so that the antenna body works in the best matching state.

[0052] Applying the antenna adjustment system of the smart wearable device provided in the embodiment of the present application, the working process of the antenna adjustment processor 103 may include: when the conductivity parameter input by the detection module 101 changes, querying the pre-stored corresponding relationship, determining the antenna adjustment parameter according to the changed conductivity parameter, and controlling the antenna tuning circuit 102 to adjust the impedance of the antenna body.

[0053] Example 2

[0054] Figure 2 A circuit diagram of a detection module 101 provided in an embodiment of the present application.

[0055] Based on the above embodiment, the present application embodiment provides a specific implementation scheme of the detection module 101. Figure 2 As shown, in the antenna adjustment system of the smart wearable device provided in the embodiment of the present application, the detection module 101 specifically includes: a DC power supply, a voltage divider circuit and at least two test terminals;

[0056] Among them, the test terminal is set at the connection point between the device body and the wearable accessory, which is used to connect the wearable device to the test loop composed of the voltage divider circuit and the DC power supply. The multiple voltage divider points in the test loop are the conductivity parameter output ends of the detection module 101.

[0057] In a specific implementation, if the smart wearable device is a smartwatch or smart bracelet, the wearable accessory may be a watch strap, with a pair of test terminals located at each end of a lug on the device body. The watch strap is typically connected to two lugs at either end of the device body, so the detection module 101 can be connected to only one end of the watch strap, or two pairs of test terminals can be provided, one connected to each lug of the watch strap. This obtains the measured values ​​of the two conductivity parameters and sends them to the antenna adjustment processor 103, which then makes a comparison and decision.

[0058] like Figure 2 As shown, the voltage divider circuit may specifically include: a first voltage divider resistor and a second voltage divider resistor;

[0059] The test terminal connects the first end of the wearable accessory to the positive pole of the DC power supply, connects the second end of the wearable accessory to the first end of the first voltage-dividing resistor, connects the second end of the first voltage-dividing resistor to the first end of the second voltage-dividing resistor, and connects the second end of the second voltage-dividing resistor to the negative pole of the DC power supply; the first end of the first resistor and the first end of the second resistor are the conductivity parameter output ends of the detection module 101.

[0060] In actual applications, when the test terminal connects the wearable accessory to a series circuit consisting of a DC power supply and a first voltage-divider resistor and a second voltage-divider resistor, when the resistance of the wearable accessory changes, different voltage values ​​will be generated at both ends of the first voltage-divider resistor and the second voltage-divider resistor, which will be matched with the high-level voltage value of the conductivity parameter receiving end of the antenna adjustment processor 103. The antenna adjustment processor 103 can identify the type of the wearable accessory according to the level type of the conductivity parameter receiving end input to the antenna adjustment processor 103, and determine the conductivity parameter (or determine the material of the wearable accessory) according to the pre-stored correspondence, thereby determining the corresponding antenna adjustment method.

[0061] Based on this, the first end of the first resistor and the first end of the second resistor can be used as the conductivity parameter output end of the detection module, and the values ​​of the conductivity parameters of the wearable accessory specifically include: the first conductivity parameter, the second conductivity parameter and the third conductivity parameter.

[0062] The resistance of the first voltage divider resistor is R1, the resistance of the second voltage divider resistor is R2, and the conductivity parameter is R C (including the first conductivity parameter R C1 , the second conductivity parameter R C2 , the third conductivity parameter R C3 , remember R C1 >R C2 >R C3 ), the voltage of the DC power supply is V0, and the high level voltage of the conductivity parameter receiving end of the antenna adjustment processor 103 is V H , the voltage at the first end of the first voltage-dividing resistor is V1, and the voltage at the first end of the second voltage-dividing resistor is V2, then we can get:

[0063]

[0064]

[0065] That is, V1>V2;

[0066] The conductivity parameter of the connected wearable accessory is recorded as the third conductivity parameter R C3 When the GPIO 1 and GPIO 2 of the antenna adjustment processor 103 are both high, V2>V H ,but

[0067] The conductivity parameter of the connected wearable accessory is recorded as the second conductivity parameter R C2 When the GPIO 1 of the antenna adjustment processor 103 is high and the GPIO 2 is low, V1>V H >V2, then And V0·R2<VH ·(R C +R1+R2).

[0068] The conductivity parameter of the connected wearable accessory is recorded as the first conductivity parameter R C1 When the GPIO 1 and GPIO 2 of the corresponding antenna adjustment processor 103 are both low, V1 < V H And V2<V H .

[0069] In summary, the resistance value of the first voltage-dividing resistor, the resistance value of the second voltage-dividing resistor, the first conductivity parameter, the second conductivity parameter, and the third conductivity parameter must meet the following conditions:

[0070]

[0071]

[0072] V0·R2<V H ·(R C +R1+R2).

[0073] Taking the strap of a smart watch / smart bracelet as an example, the materials used are usually metal, leather and rubber. Among them, the resistance of rubber is close to infinity, the resistance of leather is a fixed value, and the resistance of metal is close to 0, which can correspond to the first conductivity parameter, the second conductivity parameter and the third conductivity parameter respectively. The corresponding GPIO1 and GPIO 2 of the antenna adjustment processor 103 are 00, 10, and 11 respectively.

[0074] On this basis, N voltage-dividing resistors can be set to achieve the measurement of N+1 conductivity parameters.

[0075] Example 3

[0076] Figure 3 A circuit diagram of an antenna tuning circuit 102 provided in an embodiment of the present application.

[0077] After detecting the conductivity parameters of the wearable accessory, it is necessary to control the antenna tuning circuit 102 to switch between different antenna impedances or antenna states based on the conductivity parameters. Under the control of the antenna adjustment processor 103, the antenna tuning circuit 102 switches to different impedances, automatically adjusting the antenna impedance as the wearable accessory is changed, ensuring that the antenna always operates at a high efficiency.

[0078] like Figure 3 As shown, in the antenna adjustment system of the smart wearable device provided in the embodiment of the present application, the antenna tuning circuit 102 may specifically include a switching module and multiple impedance matching circuits;

[0079] Among them, the control end of the switching module is connected to the antenna adjustment signal output end of the antenna adjustment processor 103, the static contact of the switching module is connected to the antenna body, the moving contact of the switching module is connected one-to-one with the output end of the impedance matching circuit, and the input end of each impedance matching circuit is connected to the antenna signal source.

[0080] Taking the detection scheme of three conductivity parameters provided in Example 2 as an example, the first conductivity parameter, the second conductivity parameter, and the third conductivity parameter can be designed to correspond to the first antenna impedance, the second antenna impedance, and the third antenna impedance, respectively. When debugging the antenna body before leaving the factory, the parameters can be obtained through network debugging and recorded in the following form of a parameter table:

[0081] GPIO 1 GPIO 2 Antenna impedance 1 1 Z1 1 0 Z2 0 0 Z3

[0082] When the antenna adjustment processor 103 obtains the GPIO status, it can obtain the optimal antenna form corresponding to the wearable accessory at this time by querying the parameter table, and control the antenna tuning circuit 102 to switch different states through the GPIO interface or MIPI interface according to the type of switching module.

[0083] In a specific implementation, the switching module can adopt a single-pole triple-throw switch SP3T, one static contact of the single-pole triple-throw switch SP3T is connected to the antenna body, and the three moving contacts of the single-pole triple-throw switch SP3T are respectively connected to the first impedance matching circuit Z1, the second impedance matching circuit Z2 and the third impedance matching circuit Z3.

[0084] On this basis, if N types of conductivity parameters are set, a single-pole N-throw (SPNT) switch can be set.

[0085] Example 4

[0086] In the antenna adjustment system of the smart wearable device provided in the embodiment of the present application, the antenna tuning circuit 102 can also be a circuit built based on a variable capacitance module and / or a variable inductance module.

[0087] In a specific implementation, an antenna tuning circuit 102 with variable impedance is constructed by a variable capacitance module and / or a variable inductance module, and the correspondence between the conductivity parameter type and the adjustment parameters of the variable capacitance module and / or the variable inductance module is pre-stored in the antenna adjustment processor 103. The antenna adjustment processor 103 then adjusts the module parameters in the antenna tuning circuit 102 according to the conductivity parameters to perform impedance matching.

[0088] Example 5

[0089] The above details the various embodiments corresponding to the antenna adjustment system of the smart wearable device. On this basis, the present application also discloses a smart wearable device corresponding to the antenna adjustment system of the above-mentioned smart wearable device. The smart wearable device may include the antenna adjustment system of the smart wearable device provided by any of the above-mentioned embodiments. For specific implementation, please refer to the description of the above-mentioned embodiments, which will not be repeated here.

[0090] The above describes in detail the antenna adjustment system and smart wearable device provided by this application. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to in detail.

[0091] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0092] It should also be noted that, in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

Claims

1. An antenna adjustment system for a smart wearable device, characterized in that: include: Detection module, antenna tuning circuit and antenna adjustment processor; The detection module is installed in the device body of the smart wearable device and is used to obtain the conductivity parameter of the wearable accessory installed in the device body. The conductivity parameter output end of the detection module is connected to the conductivity parameter receiving end of the antenna adjustment processor. The antenna tuning circuit is provided between the antenna signal source of the smart wearable device and the antenna body of the smart wearable device; The antenna adjustment signal output terminal of the antenna adjustment processor is connected to the control terminal of the antenna tuning circuit, and the antenna adjustment processor is used to control the antenna tuning circuit to adjust the impedance matching state of the antenna body according to the conductivity parameter; The detection module specifically includes: a DC power supply, a voltage divider circuit and at least two test terminals; The test terminal is provided at the connection point between the device body and the wearable accessory, and is used to connect the wearable device to the test loop formed by the voltage divider circuit and the DC power supply. The multiple voltage divider points in the test loop serve as the conductivity parameter output terminals of the detection module. The voltage dividing circuit specifically includes: a first voltage dividing resistor and a second voltage dividing resistor; The test terminal connects a first end of the wearable accessory to the positive electrode of the DC power supply, a second end of the wearable accessory to the first end of the first voltage-dividing resistor, a second end of the first voltage-dividing resistor to the first end of the second voltage-dividing resistor, and a second end of the second voltage-dividing resistor to the negative electrode of the DC power supply; The first end of the first voltage-dividing resistor and the first end of the second voltage-dividing resistor are conductivity parameter output ends of the detection module; The values ​​of the conductivity parameters of the wearable accessory specifically include: a first conductivity parameter, a second conductivity parameter, and a third conductivity parameter; The resistance value of the first voltage-dividing resistor, the resistance value of the second voltage-dividing resistor, the first conductivity parameter, the second conductivity parameter, and the third conductivity parameter satisfy the following conditions: V0·R2<V H ·(R C +R1+R2), R C1 >R C2 >R C3 , Wherein, R1 is the resistance value of the first voltage-dividing resistor, R2 is the resistance value of the second voltage-dividing resistor, R C is the conductivity parameter, R C1 is the first conductivity parameter, R C2 is the second conductivity parameter, R C3 is the third conductivity parameter, V0 is the voltage of the DC power supply, V H A high level voltage is provided at a conductive parameter receiving end of the antenna adjustment processor.

2. The antenna adjustment system according to claim 1, wherein: The smart wearable device is specifically a smart watch or a smart bracelet, the wearable accessory is specifically a watch strap, and a pair of test terminals are respectively provided at two ends of a watch ear of the device body.

3. The antenna adjustment system according to claim 1, wherein: The antenna tuning circuit specifically includes a switching module and a plurality of impedance matching circuits; Among them, the control end of the switching module is connected to the antenna adjustment signal output end of the antenna adjustment processor, the static contact of the switching module is connected to the antenna body, the moving contact of the switching module is connected one-to-one with the output end of the impedance matching circuit, and the input end of each impedance matching circuit is connected to the antenna signal source.

4. The antenna adjustment system according to claim 1, wherein: The antenna tuning circuit is specifically a circuit built based on a variable capacitance module and / or a variable inductance module.

5. The antenna adjustment system according to claim 1, wherein: It also includes baseband processing circuits and radio frequency circuits; The antenna adjustment processor is specifically a wireless signal microprocessor of the smart wearable device; Among them, the input end of the baseband processing circuit is connected to the antenna signal output end of the wireless signal microprocessor, the output end of the baseband processing circuit is connected to the input end of the radio frequency circuit, and the output end of the radio frequency circuit is the antenna signal source.

6. The antenna adjustment system according to claim 1, wherein: The antenna adjustment signal output terminal of the antenna adjustment processor is specifically a general purpose input and output interface or a mobile industry processor interface.

7. A smart wearable device, characterized in that: An antenna adjustment system for a smart wearable device comprising any one of claims 1 to 6.

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