CN111384586B

CN111384586B - Wearable equipment

Info

Publication number: CN111384586B
Application number: CN202010229393.9A
Authority: CN
Inventors: 周煜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-08-24
Anticipated expiration: 2040-03-27
Also published as: CN111384586A

Abstract

The present invention provides a wearable device, the wearable device comprising: the antenna comprises a feed device, a first connecting belt and a second connecting belt, wherein a first radiating body is arranged on the first connecting belt and is electrically connected with the feed device; a second radiator is arranged on the second connecting belt and is grounded; the first connecting belt and the second connecting belt are provided with buckling hole pieces, the other one of the first connecting belt and the second connecting belt is provided with buckling pins, and when the buckling pins are buckled with the buckling hole pieces, the first radiating body and the second radiating body are electrically connected. In the embodiment of the invention, the radiation performance of the antenna of the wearable device can be enhanced.

Description

Wearable equipment

Technical Field

The invention relates to the technical field of communication, in particular to wearable equipment.

Background

With the development of electronic technology, more and more functions are provided on wearable devices. For example: in order to provide the wearable device with functions such as communication function and network access, an antenna is usually provided on the wearable device. In the actual use process, when wearable equipment dresses on the human body, the human body can cause the interference to the radiation performance of wearable equipment's antenna to the radiation performance of the antenna of wearable equipment results in being relatively poor.

Disclosure of Invention

The embodiment of the invention provides wearable equipment, which aims to solve the problem that the radiation performance of an antenna of the wearable equipment is poor.

In order to solve the above technical problem, an embodiment of the present invention provides a wearable device, including:

a power feeding device;

the first connecting belt is provided with a first radiator, and the first radiator is electrically connected with the feed device;

a second connecting band, on which a second radiator is arranged, the second radiator being grounded;

the first connecting belt and the second connecting belt are provided with buckling hole pieces, the other one of the first connecting belt and the second connecting belt is provided with buckling pins, and when the buckling pins are buckled with the buckling hole pieces, the first radiating body and the second radiating body are electrically connected.

In an embodiment of the invention, a wearable device comprises: the antenna comprises a feed device, a first connecting belt and a second connecting belt, wherein a first radiating body is arranged on the first connecting belt and is electrically connected with the feed device; a second radiator is arranged on the second connecting belt and is grounded; the first connecting belt and the second connecting belt are provided with buckling hole pieces, the other one of the first connecting belt and the second connecting belt is provided with buckling pins, and when the buckling pins are buckled with the buckling hole pieces, the first radiating body and the second radiating body are electrically connected. Like this, when wearable equipment dresses on the human body, the buckle needle generally with detain the hole spare lock, first irradiator and second irradiator constitution Loop antenna (being the Loop antenna) this moment to reduce the human interference that causes the radiation performance of antenna, strengthened the radiation performance of wearable equipment's antenna.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a wearable device provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another wearable device provided in the embodiment of the present invention;

fig. 3 is an enlarged schematic structural view of a grommet in another wearable device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a wearable device provided in an embodiment of the present invention, and as shown in fig. 1, the wearable device includes:

a power feeding device 12;

a first connecting strip 10, wherein a first radiator 11 is arranged on the first connecting strip 10, and the first radiator 11 is electrically connected with the feed device 12;

a second connecting band 20, wherein a second radiator 21 is arranged on the second connecting band 20, and the second radiator 21 is grounded;

a fastening hole 30 is provided on one of the first connecting band 10 and the second connecting band 20, a fastening pin 40 is provided on the other of the first connecting band 10 and the second connecting band 20, and when the fastening pin 40 is fastened to the fastening hole 30, the first radiator 11 and the second radiator 21 are electrically connected.

The working principle of the embodiment of the invention can be expressed as follows:

when the wearable device is worn on a human body, the pin 40 is usually fastened to the hole 30 for fixing, so that the first radiator 11 and the second radiator 21 are electrically connected to the hole 30 through the pin 40, that is, the first radiator 11 and the second radiator 21 form a loop antenna (the loop antenna is also called a loop antenna).

After the first radiator 11 and the second radiator 21 form the loop antenna, the length of the loop antenna is the sum of the first radiator 11 and the second radiator 21, that is, the length of the loop antenna is longer than that of the single first radiator 11 or the single second radiator 21, so that the bandwidth of the antenna is better, the sensitivity of the loop antenna on the influence (for example, frequency offset influence) of a human body is poorer, that is, the stability of the loop antenna is better.

Meanwhile, since a high power plant intensity region of the linear antenna is generally concentrated at the end of the antenna, the sensitivity to the influence on the human body is strong. Compared with a linear antenna, the radiation direction of the loop antenna is wider, and a human body can only block or absorb part of radiation energy in the direction, so that the loop antenna has better human body interference resistance.

In conclusion, the loop antenna is less influenced by the human body, so that the radiation performance of the wearable device is enhanced when the wearable device is worn on the human body.

In addition, when the wearable device is not worn on a human body, the wearable device is provided with the first radiator 11 and the second radiator 21, so that the length of the radiator of the antenna of the wearable device is prolonged as much as possible, and the radiation performance of the antenna of the wearable device is improved (especially, the radiation performance of the low-frequency antenna such as LTE B28 or B12 is improved more obviously). When the wearable device is not worn on a human body, the first radiator 11 and the second radiator 21 are not electrically connected to the grommet 30 through the pin 40, and the first radiator 11 and the second radiator 21 form a dipole antenna.

In this way, according to two different states, namely, a first state in which the pin 40 is fastened to the hole fastener 30 and a second state in which the pin 40 is not fastened to the hole fastener 30, the first radiator 11 and the second radiator 21 of the wearable device can be switched between two states, namely, a loop antenna and a dipole antenna, so that the diversity of the types of the antennas of the wearable device and the flexibility of use are enhanced.

Wherein, the first connecting band 10 and the second connecting band 20 can be made of insulating materials, such as: the first connecting band 10 and the second connecting band 20 may be made of plastic, rubber, or leather. Of course, the materials used for the first connecting band 10 and the second connecting band 20 may be the same or different, and the specific manner is not limited herein.

Wherein, first connecting band 10 can include relative first surface and the second surface that sets up, and has the clearance between first surface and the second surface, and when wearable equipment wore on the human body, the first surface can be for setting up towards the human body, and with the one side of human laminating, the one side that the second surface can set up for deviating from the human body. The first radiator 11 may be disposed through a gap between the first surface and the second surface, or the first radiator 11 may be attached to the second surface.

The wearable device may further have a controller disposed thereon, and the controller may be electrically connected to the power feeding device 12, and the controller may also be referred to as a chip or a processor. The specific form of the first radiator 11 and the second radiator 21 is not limited herein, for example: each of the first radiator 11 and the second radiator 21 may be any one of a Planar Inverted-F Antenna (PIFA), an Inverted-F Antenna (IFA), a Monopole Antenna (Monopole), a Loop Antenna (Loop), and a slot Antenna.

In addition, the type of the power feeding device 12 is not limited herein, and the power feeding device 12 may feed the first radiator 11 by being electrically connected to the first radiator 11, for example: the feeding device 12 may be a feeding line, and the feeding line may be electrically connected to the controller and the first radiator 11, respectively; of course, the power feeding device 12 may also couple power to the first radiator 11, for example: the feeding device 12 may be a feeding pin, one end of the feeding pin is electrically connected to the controller, and the other end of the feeding pin is spaced apart from the first radiator 11, so that the feeding pin can couple with the first radiator 11 for feeding.

Similarly, the arrangement manner of the second radiator 21 in the second connection band 20 may refer to the arrangement manner of the first radiator 11 in the first connection band 10, and details thereof are not repeated herein. Note that the second radiator 21 may be fed by a controller.

It should be noted that, as an alternative embodiment, the buttonhole 30 may include a buttonhole and a conductive connector 31, wherein the buttonhole refers to a through hole formed on the first connecting band 10 or the second connecting band 20, and the conductive connector 31 may be embedded in an inner wall of the buttonhole, and when the button pin 40 is buttoned with the buttonhole 30, it means that the button pin is electrically connected with the conductive connector 31.

The conductive connector 31 may be directly electrically connected to one of the first radiator 11 and the second radiator 12, and the fastening pin 40 may also be directly electrically connected to the other of the first radiator 11 and the second radiator 21; of course, the conductive connector 31 may be electrically connected to one of the first radiator 11 and the second radiator 21 through a first connector, and the clip 40 may also be electrically connected to the other of the first radiator 11 and the second radiator 21 through a second connector.

It should be noted that, when the first connecting band 10 is provided with the buttonhole element 30, the second connecting band 20 is provided with the button pin 40; when the pintle 40 is provided on the first connecting band 10, the buttonhole member 30 is provided on the second connecting band 20.

In addition, the specific type of the conductive connecting member 31 is not limited herein, for example: the conductive connecting member 31 may be a ring-shaped connecting member, but may also be a cylindrical connecting member.

Of course, as another alternative embodiment, the buttonhole element 30 and the first connecting band 10 or the second connecting band 20 are an integral structure, and the buttonhole element 30 is provided with a through hole, and the button pin 40 can be inserted into the through hole to achieve the purpose of buckling with the buttonhole element 30.

In addition, the number of the buttonhole elements 30 is not limited herein, for example: the number of the grommet 30 may be one or at least two. It should be noted that, when the number of the buttonhole members 30 is at least two, at least two buttonhole members 30 may be disposed at equal intervals.

In the embodiment of the present invention, the specific type of the wearable device is not limited herein, for example: the wearable device may be a watch or a smart bracelet, etc.

In an embodiment of the present invention, a wearable device includes: the antenna comprises a feed device, a first connecting belt 10 and a second connecting belt 20, wherein a first radiator 11 is arranged on the first connecting belt 10, and the first radiator 11 is electrically connected with the feed device 12; a second radiator 21 is arranged on the second connecting band 20, and the second radiator 21 is grounded; a fastening hole 30 is disposed on one of the first connecting band 10 and the second connecting band 20, a fastening pin 40 is disposed on the other of the first connecting band 10 and the second connecting band 20, and when the fastening pin 40 is fastened to the fastening hole 30, the first radiator 11 and the second radiator 21 are electrically connected. Thus, when the wearable device is worn on a human body, the fastening pin 40 is generally fastened to the fastening hole 30, and the first radiator 11 and the second radiator 21 form a Loop antenna (i.e., a Loop antenna), so that interference of the human body to the radiation performance of the antenna is reduced, and the radiation performance of the antenna of the wearable device is enhanced.

Optionally, referring to fig. 2, the buttonhole unit 30 is disposed on the second connection band 20, the buttonhole unit 30 is electrically connected to the second radiator 21, the button pin 40 is disposed on the first connection band 10, and the first radiator 11 is electrically connected to the button pin 40.

In the embodiment of the present invention, the second connecting band 20 is provided with the buttonhole 30, and the first connecting band 10 is provided with the button 40, so that the operation steps of fixing the wearable device on the human body are simple, and the fixing effect is good. Meanwhile, the weight of the first connecting band 10 and the second connecting band 20 can be made more uniform.

Optionally, the wearable device further comprises a detection circuit 50, wherein the detection circuit 50 is electrically connected to the grommet 30.

Wherein, one end of the detection circuit 50 can be electrically connected with the controller, and the other end can be electrically connected with the buttonhole member 30.

It should be noted that the number of the buttonhole elements 30 is not limited herein, for example: the number of the grommet 30 may be 1, or at least two. When the number of the buttonhole members 30 is at least two, the number of the detection circuits 50 may be 1, and of course, each buttonhole member 30 may correspond to one detection circuit 50.

The detection circuit 50 can be used to detect whether the corresponding hole-fastening member 30 is fastened with the pin 40. For example: when the hole 30 is not fastened with the pin 40, one side of the hole 30 may be at a high level, and the other side may be at a low level, and when the hole 30 is fastened with the pin 40, both sides of the hole 30 may be at a low level, so that the detection circuit 50 detects a change of an electrical signal at both sides of the hole 30, and detects whether the hole 30 is fastened with the pin 40.

In the embodiment of the present invention, the detection circuit 50 is electrically connected to the buttonhole member 30, so that whether the buttonhole member 30 is fastened to the button pin 40 can be more accurately detected by the detection circuit 50.

Optionally, a plurality of the buttonhole elements 30 are disposed on the second connecting band 20, and each of the conductive connecting elements 31 is electrically connected to a detection circuit 50.

Wherein, the above-mentioned a plurality of buttonhole components 30 can be distributed on the second connecting band 20 at equal intervals, namely: the distance between any adjacent two of the plurality of grommet 30 is equal.

It should be noted that, when the grommet 30 includes the conductive connecting member 31, the detection circuit 50 may be electrically connected to the conductive connecting member 31, and of course, the detection circuit 50 may also be electrically connected to other portions of the grommet 31.

Referring to fig. 3, when the detection circuit 50 corresponding to each grommet 30 is electrically connected to the conductive connecting member 31 of the grommet 31, the detection circuit 50 corresponding to each conductive connecting member 31 may be considered to be connected in parallel to the conductive connecting member 31, when the conductive connecting member 31 is electrically connected to the pintle 40, the electrical signal on the conductive connecting member 31 may change (for example, switching between high and low level signals, voltage change or current change, etc.), and the detection circuit 50 may detect the change information of the electrical signal on the conductive connecting member 31 and send the change information of the electrical signal to the controller.

In the embodiment of the present invention, each hole fastening piece 30 corresponds to one detection circuit 50, so that when the detection circuit 50 detects that the electrical signal on the corresponding hole fastening piece 30 changes, the hole fastening piece 30 can be quickly and accurately determined to be fastened with the fastening pin 40, thereby improving the intelligent degree of the wearable device.

It should be noted that, after it is determined that the fastening pin 40 is specifically fastened to the first fastening hole of the plurality of fastening hole members 30, the wearable device may call an antenna parameter corresponding to the first fastening hole member to further adjust the antenna performance of the wearable device. And the antenna parameters may include at least one of a resonant frequency, a standing wave ratio, and an impedance.

Alternatively, referring to fig. 3, fig. 3 is an enlarged view of a region a in fig. 2, and the second radiator 21 and the keyhole member 30 are electrically connected through a capacitor 32.

The second radiator 21 may be grounded, and the grounding manner of the second radiator 21 is not limited herein, for example: as an alternative embodiment, the second radiator 21 may be directly grounded; as another optional implementation, the second radiator 21 is electrically connected to the controller and is grounded through the controller; as another alternative, the second radiator 21 is electrically connected to a controller, the controller is disposed on a printed circuit board 61, and the printed circuit board 61 is grounded through a connector 62. It should be noted that the connecting member 62 may be a metal sheet, a metal column, or the like.

When the hole member 30 includes the conductive connecting member 31, since the detection circuit 50 is normally set to the high level by default, that is, the conductive connecting member 31 is also set to the high level, and the second radiator 21 can be grounded, the second radiator 21 is set to the low level, so that when the electrical signal on the conductive connecting member 31 is a high-frequency signal, the conductive connecting member 31 is in conduction with the second radiator 21, and when the electrical signal on the conductive connecting member 31 is a dc signal, the conductive connecting member 31 is disconnected from the second radiator 21.

The pin 40 can be grounded, that is, the pin 40 can be at a low level, and when the pin 40 is fastened to the eyelet 30, that is, electrically connected to the conductive connecting member 31 in the eyelet 30, the conductive connecting member 31 can also be at a low level, so that the detection circuit 50 can determine that the pin 40 is fastened to the eyelet 30 corresponding to the conductive connecting member 31 by detecting that the high level of one of the conductive connecting members 31 is switched to the low level, thereby making the detection mode more convenient and making the detection result more accurate.

In the embodiment of the present invention, since the second radiator 21 is electrically connected to the hole-fastening member 30 through the capacitor 32, the detection circuit 50 can determine whether the hole-fastening member 30 is fastened to the fastening pin 40 by detecting a change of an electrical signal of the hole-fastening member 30, so that the detection is more convenient and the detection result is more accurate.

In each embodiment of the present application, the low level may be 0 to 0.25V, and the high level may be 3.5 to 5V.

Optionally, the first radiator 11 is electrically connected to the fastening pin 40, and the first radiator 11 is grounded through an inductor.

The specific size of the inductor is not limited herein, for example: the inductance may be 100 nanohenries (nH).

In the embodiment of the present invention, since the first radiator 11 is electrically connected to the pin 40, and the first radiator 11 is grounded through the inductor, when the pin 40 is fastened to the hole-fastening member 30 and the hole-fastening member 30 includes the conductive connecting member 31, the effect of lowering the high level on the conductive connecting member 31 can be achieved, and the effect of making the detection circuit 50 more convenient to detect the change of the electrical signal of the conductive connecting member 31 and making the detection result more accurate can be achieved.

Optionally, the feeding means 12 is a feeder.

In the embodiment of the present invention, since the feeding device 12 is a feeding line, the controller directly feeds power to the first radiator 11 through the feeding line, so that the stability and reliability of feeding the first radiator 11 can be improved, and the use cost can be reduced.

Optionally, the power feeding device 12 is electrically connected to the first radiator 11 through a tuning switch and a matching circuit.

Wherein the feeding means 12 may comprise a feeding line and the matching circuit may adjust the impedance on the first radiator 11.

the length of the matching circuit connected between the feeder line and the first radiator 11 can be selected by adjusting the switch according to the buckling of the buckling pin 40 and different buckling hole members 30, so as to achieve the purpose of adjusting the impedance of different buckling hole members 30.

For example: when the fastening pin 40 is fastened with the first fastening hole part and the first fastening hole part comprises the first conductive connecting part, the length of the matching circuit connected between the feeder line and the first radiator 11 can be selected to be the first length through the adjusting switch, and then the impedance on the first conductive connecting part can be adjusted to be the preset impedance;

when the fastening pin 40 is fastened to the first fastening hole and the second fastening hole includes the second conductive connecting member, the length of the matching circuit connected between the feeder line and the first radiator 11 can be selected to be the second length by the adjusting switch, and the impedance on the second conductive connecting member can also be adjusted to be the preset impedance.

It should be noted that specific values of the preset impedance are not limited herein, for example: the predetermined impedance may take the value of 500 ohms.

In addition, the first length may be greater than the second length, and of course, the first length may also be less than or equal to the second length, and the specific relationship is not limited herein.

In the embodiment of the present invention, the feeding device 12 is electrically connected to the first radiator 11 through the adjusting switch and the matching circuit, so that the impedance on the conductive connecting member 31 included in different grommet 30 can be adjusted through the adjusting switch and the matching circuit, and thus, when the fastening pin 40 is electrically connected to different grommet 30, the radiation performance of the antenna of the wearable device can be enhanced.

Optionally, the wearable device further includes a controller, the controller is electrically connected to the adjusting switch, a plurality of matching circuits are disposed between the feeding device 12 and the first radiating body 11, a first control end of the adjusting switch is electrically connected to the feeding device 12, and an output end of each matching circuit is electrically connected to the first radiating body 11;

when the detection circuit 50 detects that the pintle 40 is fastened with a target fastening hole piece of the plurality of fastening hole pieces 30, the controller controls the second control end of the adjusting switch to be electrically connected with an input end of a target matching circuit of the plurality of matching circuits, and the target fastening hole piece corresponds to the target matching circuit.

Wherein, the target button hole piece corresponds with the target matching circuit, can understand as: each grommet 30 corresponds to a matching circuit, which can also be understood when the grommet 30 comprises a conductive connector: the conductive connection member included in each of the grommet 30 corresponds to a matching circuit, and when the pin 40 is electrically connected to one of the conductive connection members 31, the second control terminal of the adjustment switch is also electrically connected to the input terminal of the matching circuit corresponding to the conductive connection member 31.

It should be noted that the impedances of the different conductive connecting members 31 may be different, and therefore the impedances to be adjusted of the different conductive connecting members 31 may also be different, so that each conductive connecting member 31 needs to be configured with a corresponding matching circuit to adjust the impedance.

In the embodiment of the present invention, each conductive connecting element 31 may be configured with a corresponding matching circuit, so that when adjusting the impedance of a conductive connecting element 31, the impedance of the conductive connecting element 31 may be adjusted only by electrically connecting the second control terminal of the adjusting switch with the input terminal of the matching circuit corresponding to the conductive connecting element 31, and the impedance of the conductive connecting element 31 may be adjusted more conveniently.

Optionally, the conductive connecting member 31 is an annular metal ring.

The fastening hole included in the fastening hole member 30 is usually a circular hole, and the conductive connecting member 31 is an annular metal ring, so that the conductive connecting member 31 can be better disposed on the inner wall of the fastening hole.

In the embodiment of the invention, the conductive connecting piece 31 is an annular metal ring, so that the use cost and the processing difficulty are reduced, and meanwhile, the conductive effect is better.

Optionally, the wearable device further comprises: the casing 60, the casing 60 includes the holding cavity, be provided with printed circuit board 61 in the holding cavity, the controller set up in on the printed circuit board 61, first connecting band 10 with second connecting band 20 set up respectively in the both sides of casing 60.

Preferably, the first and

second connection bands

10 and 20 may be disposed at opposite sides of the case 60, respectively.

The shape of the housing 60 is not limited herein, for example: may be rectangular or circular, etc.

Wherein, first connecting band 10 and second connecting band 20 rotate with the both sides of casing 60 respectively and are connected, like this, the positional relationship between regulation casing 60 and first connecting band 10 and the second connecting band 20 that can be better to can strengthen wearable equipment and wear the effect on the human body, reinforcing user experience.

The printed circuit board 60 may be grounded through a connector 62, and the specific form of the connector 62 is not limited herein, for example: the connector 62 may be a metal spring or a metal post.

In the embodiment of the present invention, since the controller is disposed on the printed circuit board 61, the fixing effect of the controller can be enhanced.

As an alternative embodiment, the printed circuit board 61 is grounded, and the controller is disposed on the printed circuit board 61 so that the second radiator 21 may be grounded through the printed circuit board 61.

As another alternative, the printed circuit board 61 is grounded, the controller is disposed on the printed circuit board, and the second radiator 21 is electrically connected to the controller through the printed circuit board 61.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A wearable device, comprising:

a power feeding device;

the first connecting belt and the second connecting belt are provided with a buckling hole piece, the other one of the first connecting belt and the second connecting belt is provided with a buckling pin, and when the buckling pin is buckled with the buckling hole piece, the first radiating body and the second radiating body are electrically connected;

the wearable equipment further comprises a detection circuit, the detection circuit is electrically connected with the buckling hole piece, and the detection circuit is used for detecting the change condition of the electric signals on the two sides of the buckling hole piece;

the second connecting belt is provided with a plurality of buckling hole pieces, and each buckling hole piece is electrically connected with one detection circuit correspondingly.

2. The wearable device of claim 1, wherein the button hole is disposed on the second connection band, the button hole is electrically connected to the second radiator, the button pin is disposed on the first connection band, and the first radiator is electrically connected to the button pin.

3. The wearable device of claim 2, wherein the second radiator is electrically connected to the grommet through a capacitor.

4. The wearable device of claim 2, wherein the first radiator is grounded through an inductance.

5. The wearable device according to claim 1, wherein the feeding device is electrically connected to the first radiator through a tuning switch and a matching circuit.

6. The wearable device according to claim 5, further comprising a controller electrically connected to the adjustment switch, wherein a plurality of matching circuits are disposed between the feeding device and the first radiating body, a first control terminal of the adjustment switch is electrically connected to the feeding device, and an output terminal of each matching circuit is electrically connected to the first radiating body;

when the detection circuit detects that the buckling pin is buckled with a target buckling hole piece in the plurality of buckling hole pieces, the controller controls the second control end of the adjusting switch to be electrically connected with the input end of a target matching circuit in the plurality of matching circuits, and the target buckling hole piece corresponds to the target matching circuit.

7. The wearable device of claim 6, further comprising: the casing, the casing includes the holding cavity, be provided with printed circuit board in the holding cavity, the controller set up in on the printed circuit board, first connecting band with the second connecting band set up respectively in the both sides of casing.