CN114914663B

CN114914663B - Wearable device and communication system

Info

Publication number: CN114914663B
Application number: CN202110186444.9A
Authority: CN
Inventors: 刘国林
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2025-09-16
Anticipated expiration: 2041-02-09
Also published as: CN114914663A

Abstract

The present application provides a wearable device and a communication system. The wearable device includes a main body and a functional band, and the main body includes a first display screen and a first antenna. The functional band is connected to the main body, and the functional band includes a detector and a second antenna. The detector is electrically connected to the second antenna, and the detector is used to detect target information and send the target information to the first antenna through the second antenna. The first antenna is used to receive the target information and transmit the target information to the first display screen to display the target information on the first display screen; and/or, the detector is used to detect the target information and send the target information to the third antenna in the electronic device through the second antenna. The wearable device and communication system provided by the present application can expand the functions of the wearable device and meet the diverse and differentiated needs of different users for wearable devices.

Description

Wearable device and communication system

Technical Field

The application relates to the technical field of electronics, in particular to wearable equipment and a communication system.

Background

Along with the intelligent development of wearable equipment (such as a watch), the functional requirements of different users on the wearable equipment gradually differ, so that how to design the wearable equipment so that the wearable equipment can meet the diversified and differentiated requirements of different users becomes a technical problem to be solved.

Disclosure of Invention

The application provides wearable equipment with an extended function and a communication system.

In one aspect, the present application provides a wearable device comprising:

a body including a first display screen and a first antenna, and

The electronic device comprises a body, a functional band, a first antenna and a second antenna, wherein the functional band is connected with the body, the functional band comprises a detector and a second antenna, the detector is electrically connected with the second antenna, the detector is used for detecting target information and sending the target information to the first antenna through the second antenna, the first antenna is used for receiving the target information and sending the target information to the first display screen so as to display the target information on the first display screen, and/or the detector is used for detecting the target information and sending the target information to a third antenna in the electronic device through the second antenna.

On the other hand, the application also provides a communication system which comprises the electronic equipment and the wearable equipment, wherein a third antenna is arranged in the electronic equipment, and the second antenna of the functional band and the third antenna are in wireless communication.

According to the wearable equipment provided by the application, the function band is arranged, and the function band can detect target information, so that the wearable equipment has other extended functions besides the body function, and therefore, the wearable equipment with different functions can be designed according to the requirements of different users, and the diversified and differentiated requirements of different users are met. The second antenna in function area is with the first antenna of target information wireless transmission to body or electronic equipment's third antenna, and the user of being convenient for looks over through the first display screen of body or electronic equipment, and the function area need not to design the display screen promptly for the function area is lighter and thinner, conveniently dresses.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an electronic device in the communication system of FIG. 1;

FIG. 3 is an exploded view of the electronic device shown in FIG. 2;

FIG. 4 is a schematic diagram of a wearable device in the communication system of FIG. 1;

FIG. 5 is a schematic view of the wearable device of FIG. 4 including a body and a functional strap;

FIG. 6 is a schematic view of the wearable device of FIG. 4 including a body, a functional strap, and a connecting strap;

FIG. 7 is a schematic diagram of the functional tape of FIG. 6 provided with a second antenna;

FIG. 8 is a schematic view of a housing of the functional tape of FIG. 7;

FIG. 9 is a schematic view of the housing, second antenna and detector of the functional tape of FIG. 7;

Fig. 10 is a schematic diagram of the second antenna shown in fig. 9 including a feeding member and a grounding member;

fig. 11 is a schematic view of the radiator of the second antenna shown in fig. 10 having a feeding end and a grounding end;

FIG. 12 is a schematic diagram of a matching circuit between the power feeding and RF units shown in FIG. 10;

fig. 13 is a schematic diagram of a frequency selecting circuit disposed between the grounding member and the motherboard shown in fig. 10.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The embodiments of the application may be suitably combined with each other.

Referring to fig. 1, fig. 1 is a schematic diagram of a communication system 100 according to an embodiment of the present application. The communication system 100 provided by the embodiment of the application comprises an electronic device 20 and a wearable device 10. The electronic device 20 may be a cell phone, tablet computer, desktop computer, laptop computer, electronic reader, handheld computer, electronic display screen, notebook computer, ultra-mobile personal computer (UMPC), netbook, cell phone, personal Digital Assistant (PDA), augmented reality (augmented reality, AR) \virtual reality (VR) device, media player, etc. The following examples take cell phones as examples. The wearable device 10 may be a wristwatch, bracelet, necklace, or the like. The following examples take watches as examples.

Fig. 2 is a schematic diagram of an electronic device 20 according to an embodiment of the application, as shown in fig. 2. The electronic device 20 comprises a first housing 201, a second display 202 and a third antenna 203.

Referring to fig. 2 and 3, the first housing 201 includes a middle frame 210 and a back plate 211. The middle frame 210 and the back plate 211 may be integrally formed or integrally connected. For example, the middle frame 210 and the back plate 211 are bonded as one body. The second display 202 is disposed on a side of the middle frame 210 facing away from the back plate 211. The second display 202, the middle frame 210 and the back plate 211 enclose a first accommodating space 204.

Optionally, the second display 202 is a flexible screen, a rigid screen, or the like. The middle frame 210 may be made of metal, alloy, stainless steel, carbon fiber, ceramic, glass, plastic, etc. The material of the back plate 211 may be selected from metal, alloy, stainless steel, carbon fiber, ceramic, glass, plastic, etc. In the embodiment of the present application, the middle frame 210 is a metal middle frame. The back plate 211 is a glass back plate.

Referring to fig. 2 and 3, the second display 202 is electrically connected to the third antenna 203. Specifically, the electronic device 20 further includes a first motherboard 205 and a first controller 206 disposed in the first accommodating space 204. The rf unit 230 of the third antenna 203 is disposed on the first main board 205. The first controller 206 is also disposed on the first motherboard 205. One end of the first controller 206 is electrically connected to the second display 202, and the other end of the first controller 206 is electrically connected to the rf unit 230 of the third antenna 203. The first controller 206 is used for controlling the third antenna 203 to transmit and receive antenna signals and display of the second display screen 202.

The third antenna 203 may be partially or fully accommodated in the first accommodating space 204. In one embodiment, the third antenna 203 is disposed in the first accommodating space 204. For example, the third antenna 203 is a ceramic antenna, an FPC antenna, a PCB antenna, a steel sheet antenna, an LDS antenna, or the like, which is built in the first housing space 204. In another embodiment, the third antenna 203 is partially accommodated in the first accommodating space 204. Specifically, the rf unit 230 of the third antenna 203 is disposed on the first main board 205, and at least part of the middle frame 210 and/or the back plate 211 forms a radiator of the third antenna 203. For example, a portion of the metal center 210 forms the radiator of the third antenna 203. By having the middle frame 210 and/or the back plate 211 form the radiator of the third antenna 203, shielding, losses of the third antenna 203 may be reduced, thereby ensuring reliability when the third antenna 203 communicates with the wearable device 10.

Fig. 4 is a schematic diagram of a wearable device 10 according to an embodiment of the present application, as shown in fig. 4. The wearable device 10 includes a body 101 and a functional band 102.

Referring to fig. 4 and 5, the body 101 may be a watch body, a bracelet decoration body, a necklace decoration body, or the like. In the embodiment of the present application, the body 101 is a watch body of a wristwatch. The body 101 includes a second housing 110, a first display 112, and a first antenna 113. The first display 112 is connected to the second housing 110 to form a second accommodating space 114. The first antenna 113 is partially or entirely accommodated in the second accommodating space 114. Wherein the first display 112 may be a flexible screen, a rigid screen, or the like. The second housing 110 may be made of a conductive material or an insulating material. When the second housing 110 is made of conductive material, at least a portion of the second housing 110 may form a radiator of the first antenna 113, and the rf unit of the first antenna 113 may be disposed in the second accommodating space 114. By forming the second case 110 as a radiator of the first antenna 113, shielding and loss of the first antenna 113 can be reduced, and reliability in communication between the first antenna 113 and the functional tape 102 or the electronic device 20 (see fig. 1) can be ensured. When the second housing 110 is made of an insulating material, the first antenna 113 may be disposed in the second accommodating space 114 entirely, and transmit and receive antenna signals through the second housing 110. In other words, the first antenna 113 may be a built-in antenna provided in the second housing space 114, for example, the first antenna 113 may be a ceramic antenna, an FPC antenna, a PCB antenna, a steel sheet antenna, an LDS antenna, or the like built in the second housing space 114. The first antenna 113 is disposed in the second accommodating space 114, which is beneficial to simplifying the installation and design of the first antenna 113. Of course, in other embodiments, the first antenna 113 may be an external antenna, that is, the first antenna 113 is disposed outside the second housing 110.

Wherein the first display 112 is electrically connected to the first antenna 113. Specifically, in the embodiment of the present application, a second motherboard 115 and a second controller 116 are further disposed in the second accommodating space 114 of the body 101. The rf unit of the first antenna 113 is disposed on the second motherboard 115. The second controller 116 is also disposed on the second motherboard 115. One end of the second controller 116 is electrically connected to the first display 112, and the other end of the second controller 116 is electrically connected to the rf unit of the first antenna 113. The second controller 116 is used for controlling the first antenna 113 to transmit and receive antenna signals and displaying the first display screen 112.

The functional tape 102 is connected to the body 101. In the embodiment of the present application, the functional tape 102 may be directly connected to the body 101 or may be connected to the body 101 through other structural members. In other words, other structural members, ornamental members, functional members, connecting members, and the like may be provided between the functional tape 102 and the body 101.

In one embodiment, one end of the functional tape 102 is connected to one end of the body 101, and the other end of the functional tape 102 is connected to the other end of the body 101. The functional band 102 forms an annular wearable device 10 with the body 101. When the wearable device 10 is worn on the wrist, the functional band 102 is at least partially attached to the inner side of the wrist, and the body 101 is attached to the outer side of the wrist. Thus, the functional band 102 is facilitated to perform heart rate detection, electrocardiographic detection, pulse detection, and the like. Furthermore, the functional band 102 integrates multiple functions of wearing, fixing the body 101, and function detection, which can enable the wearable device 10 to have other extended functions in addition to the body 101 function.

In another embodiment, as shown in fig. 6, the wearable device 10 further comprises a connection strap 103 connected between the functional strap 102 and the body 101. Specifically, the connection tape 103 includes a first sub-connection tape 130 and a second sub-connection tape 131. The first sub-connection band 130 is connected between one end of the functional band 102 and one end of the body 101. The second sub-connection strap 131 is connected to an end of the functional strap 102 facing away from the first sub-connection strap 130, and an end of the second sub-connection strap 131 facing away from the functional strap 102 is used to connect to another end of the body 101. In other words, the body 101, the first sub-connection strap 130, the functional strap 102, and the second sub-connection strap 131 are connected end to form the wearable apparatus 10.

The first sub-connection band 130 and the second sub-connection band 131 may be flexible bands or hard bands. The first sub-connecting band 130 and the second sub-connecting band 131 may be made of metal, leather, plastic, etc. Optionally, the first sub-connection band 130 and the second sub-connection band 131 are detachably connected or non-detachably connected to the body 101. In the embodiment of the application, the first sub-connection band 130 and the second sub-connection band 131 are detachably connected with the second housing 110 of the body 101, so that the first sub-connection band 130, the second sub-connection band 131 or the body 101 can be replaced conveniently, and the cost is saved. Of course, the first sub-connection band 130 is detachably connected to the functional band 102, and the second sub-connection band 131 is detachably connected to the functional band 102. When the first sub-connection band 130 is detachably connected to the functional band 102, the second sub-connection band 131 is detachably connected to the functional band 102, thereby facilitating replacement of the functional band 102. The length of the first sub-connecting band 130 and the length of the second sub-connecting band 131 can be designed according to practical needs, for example, the length of the first sub-connecting band 130 and the length of the second sub-connecting band 131 can be used to attach the functional portion to the inner side of the wrist and attach the body 101 to the outer side of the wrist when the first sub-connecting band 130, the functional portion, the second sub-connecting band 131 and the body 101 are sequentially connected end to form the wearable device 10.

In this embodiment, by connecting the functional band 102 between the first sub-connection band 130 and the second sub-connection band 131, the functional band 102 can directly contact the wrist of the user, so as to realize detection without shielding by the connection band 103, and the connection band 103 can be omitted during signal transmission between the second antenna 122 and the first antenna 113 of the functional band 102 and between the second antenna 122 and the third antenna 203 of the functional band 102, thereby reducing the influence of the first sub-connection band 130 or the second sub-connection band 131 on the wireless transmission performance of the functional band 102. Of course, in other embodiments, the functional tape 102 may be provided on the connection tape 103, and the functional tape 102 is connected to the body 101 through the connection tape 103.

As shown in fig. 7, the functional tape 102 includes a third housing 120, a detector 121, and a second antenna 122. The detector 121 and the second antenna 122 are at least partially disposed in the third housing 120.

Referring to fig. 7 and 8, the third housing 120 includes a conductive frame 1201, a first cover 1202 and a second cover 1203. The first cover plate 1202 is disposed opposite the second cover plate 1203. The conductive bezel 1201 is connected between the first cover plate 1202 and the second cover plate 1203. The first cover 1202, the conductive frame 1201 and the second cover 1203 are sequentially connected to form a third accommodating space 123.

Referring to fig. 7 to 9, the conductive frame 1201 includes a first conductive frame 120a, a second conductive frame 120b, and a third conductive frame 120c connected end to end. The first conductive bezel 120a is connected to the first sub-connection strap 130. The third conductive frame 120c is connected to the second sub-connection strap 131. Of course, in other embodiments, the first conductive frame 120a may be connected to one end of the body 101, and the third conductive frame 120c is connected to the other end of the body 101. Optionally, the first conductive frame 120a, the second conductive frame 120b, and the third conductive frame 120c are metal conductive frames, alloy conductive frames, carbon fiber conductive frames, and the like. The metal conductive frame, the alloy conductive frame and the carbon fiber conductive frame have higher strength, and can have higher bearing capacity while improving the performance of the second antenna 122. The first conductive frame 120a, the second conductive frame 120b, and the third conductive frame 120c may be enclosed to form various shapes such as a ring shape, a rectangle shape, and the like.

The detector 121 is used to detect target information. Optionally, the detector 121 is used for one or more of heart rate detection, blood pressure detection, electrocardiographic detection, blood glucose detection, pulse detection, blood oxygen detection, motion detection, distance detection, energy detection, sleep detection, position detection, temperature detection, infrared detection, humidity detection, altitude detection, magnetic field detection, radio frequency identification, fingerprint identification, face recognition, voice recognition. The detector 121 is disposed in the third accommodation space 123.

In an embodiment, referring to fig. 7 to 9, the functional tape 102 further includes a third motherboard 124 disposed in the third accommodating space 123. The detector 121 includes a detection unit 121a and a processing unit 121b. The detection unit 121a may be a camera, an electrode, a detection lamp, or the like. The processing unit 121b may be a processing chip. The processing unit 121b is disposed on the third motherboard 124 and electrically connected to the detecting unit 121a. The detection unit 121a faces the first cover plate 1202. Optionally, a through hole is provided on the first cover 1202, and the detection unit 121a obtains the target information through the through hole on the first cover 1202. Of course, in other embodiments, a battery 125 may be further disposed in the third accommodating space 123 of the functional tape 102, and the battery 125 is electrically connected to the third motherboard 124 to supply power to the third motherboard 124.

The target information may be understood as one or more of heart rate, blood pressure, electrocardio, blood sugar, pulse, blood oxygen, exercise, distance, energy, sleep, position, temperature, infrared, humidity, altitude, magnetic field, radio frequency, fingerprint, face, and sound.

Referring to fig. 7 and 9, the detector 121 is electrically connected to the second antenna 122. Specifically, the processing unit 121b of the detector 121 is electrically connected to the radio frequency unit 122b of the second antenna 122, so as to realize transmission of the target information. The detector 121 and the rf unit 122b of the second antenna 122 are disposed in the third accommodating space 123.

The second antenna 122 is configured to receive the target information and transmit the target information to the first antenna 113 to enable the first display 112 to display the target information, and/or the second antenna 122 is configured to transmit the target information to the third antenna 203 in the electronic device 20 to enable the second display 202 of the electronic device 20 to display the target information. In other words, wireless communication is performed between the second antenna 122 of the functional band 102 and the third antenna 203 within the electronic device 20, and/or wireless communication is performed between the second antenna 122 of the functional band 102 and the first antenna 113 within the body 101.

In one embodiment, the second antenna 122 receives the target information detected by the detector 121, and wirelessly transmits the received target information to the first antenna 113, and after the first antenna 113 receives the target information transmitted by the second antenna 122, the target information is displayed on the first display screen 112 under the control of the first controller 206.

In another embodiment, the second antenna 122 receives the target information detected by the detector 121, and wirelessly transmits the received target information to the third antenna 203, and after the third antenna 203 receives the target information transmitted by the first antenna 113, the target information is displayed on the second display 202 under the control of the second controller 116.

In yet another embodiment, the second antenna 122 receives the target information detected by the detector 121, and wirelessly transmits the received target information to the first antenna 113 and the third antenna 203, after the first antenna 113 receives the target information transmitted by the second antenna 122, the target information is displayed on the first display screen 112 under the control of the first controller 206, and after the third antenna 203 receives the target information transmitted by the second antenna 122, the target information is displayed on the second display screen 202 under the control of the second controller 116.

According to the wearable device 10 provided by the application, the function band 102 is arranged, and the function band 102 can detect target information, so that the wearable device 10 has other extended functions besides the functions of the body 101, and therefore, the wearable devices 10 with different functions can be designed according to the requirements of different users, and the diversified and differentiated requirements of different users are met. The second antenna 122 of the functional band 102 wirelessly transmits the target information to the first antenna 113 of the body 101 or the third antenna 203 of the electronic device 20, so that a user can conveniently check the target information through the first display screen 112 of the body 101 or the second display screen 202 of the electronic device 20, that is, the functional band 102 does not need to design a display screen, so that the functional band 102 is lighter and thinner and is convenient to wear.

Referring to fig. 9 and 10, the second antenna 122 includes a radiator 122a, a radio frequency unit 122b, a feeding element 122c and a grounding element 122d. Optionally, at least a portion of the third housing 120 of the functional tape 102 forms a radiator 122a of the second antenna 122. For example, the first conductive bezel 120a, the second conductive bezel 120b, and the third conductive bezel 120c form a radiator 122a of the second antenna 122. The radiator 122a of the second antenna 122 is used to transmit and receive electromagnetic waves to transmit target information to the first antenna 113 (refer to fig. 7) and/or the third antenna 203 (refer to fig. 2).

By forming the third case 120 of the functional tape 102 into the radiator 122a of the second antenna 122, loss when the second antenna 122 transmits and receives antenna signals can be reduced, and performance of the second antenna 122 can be improved. In addition, the third housing 120 of the functional tape 102 forms the second antenna 122, which can save the space of the third accommodating space 123 and increase the space utilization of the third accommodating space 123 compared with the case where the second antenna 122 is entirely disposed in the third accommodating space 123.

Alternatively, referring to fig. 10 and 11, the radiator 122a of the second antenna 122 includes a feeding end 1220 and a grounding end 1221. Wherein the feeding end 1220 is configured to electrically couple to the rf unit 122b of the second antenna 122. The ground 1221 is used to electrically couple a reference ground on the third motherboard 124.

In an embodiment, referring to fig. 7 and 11, the feeding end 1220 is disposed on the second conductive frame 120b. By disposing the feeding end 1220 on the second conductive frame 120b, the second conductive frame 120b is not directly connected to the connection strip 103 or the body 101, so that the influence of the connection strip 103 or the body 101 on the signal transmission and reception of the second antenna 122 can be reduced. The grounding end 1221 may be disposed on the first conductive frame 120a, the second conductive frame 120b, or the third conductive frame 120 c. In an embodiment, the grounding end 1221 is disposed on the first conductive frame 120a, and the length of the radiator 122a between the feeding end 1220 and the grounding end 1221 is greater than or equal to one half wavelength corresponding to the operating frequency of the radiator 122 a. By making the length of the radiator 122a between the feeding end 1220 and the grounding end 1221 greater than or equal to a half wavelength corresponding to the operating frequency of the radiator 122a, the center frequency of the radiator 122a can be increased, and the input impedance of the second antenna 122 can be increased, thereby increasing the bandwidth and improving the efficiency of the second antenna 122. Optionally, the second antenna 122 is a bluetooth antenna, and the frequency of the second antenna 122 is 2.4-2.5 ghz.

The rf unit 122b of the second antenna 122 is disposed at an edge of the third main board 124 and is close to the radiator 122a of the second antenna 122. In one embodiment, the third main board 124 is rectangular. The first edge 124a of the third main board 124 is disposed opposite to the second conductive frame 120b of the third housing 120. The rf unit 122b of the second antenna 122 is disposed near the first edge 124a of the third main board 124. By disposing the rf unit 122b of the second antenna 122 at the edge of the third main board 124 and near the radiator 122a of the second antenna 122, the distance between the rf unit 122b of the second antenna 122 and the radiator 122a is reduced, so that the path loss during signal transmission between the rf unit 122b of the second antenna 122 and the radiator 122a of the second antenna 122 can be reduced.

In an embodiment, referring to fig. 10 and 11, the rf unit 122b of the second antenna 122 is connected to the feeding end 1220 of the radiator 122a through the feeding element 122 c. Specifically, the feeding element 122c of the second antenna 122 is disposed between the radiator 122a of the second antenna 122 and the rf unit 122b of the second antenna 122, one end of the feeding element 122c is electrically connected to the radiator 122a, and the other end of the feeding element 122c is electrically connected to the rf unit 122b. The electrical coupling between the feeding member 122c and the feeding end 1220 of the radiator 122a may be a coupling connection or a direct electrical connection. The electrical coupling between the feed 122c and the rf unit 122b may be a coupled connection or a direct electrical connection. In the embodiment of the present application, the feeding element 122c may be a conductive spring. Such as metal spring. One end of the feeding member 122c abuts against the feeding end 1220 of the radiator 122a, and the other end of the feeding end 1220 abuts against the radio frequency unit 122b of the second antenna 122. The feeding member 122c abuts against the feeding end 1220 of the radiator 122a to ensure contact stability, thereby improving reliability of antenna signal transmission.

Further, as shown in fig. 12, the second antenna 122 further includes a matching circuit electrically connected between the feeding member 122c and the rf unit 122 b. The matching circuit can be L-shaped, pi-shaped, T-shaped mixed matching circuit, single-branch matching circuit, double-branch matching circuit, multi-stage matching circuit and the like. The matching circuit may be connected in series between the feeding element 122c and the rf unit 122b of the second antenna 122, or may be connected in parallel between the feeding element 122c and the rf unit 122b of the second antenna 122. The matching circuit may be used to adjust the quality factor, bandwidth, frequency, etc. of the second antenna 122, thereby optimizing the return loss of the antenna and improving the overall performance of the second antenna 122.

The grounding end 1221 of the radiator 122a and the reference ground on the third motherboard 124 may be connected by the grounding element 122 d. Specifically, the grounding element 122d of the second antenna 122 is disposed between the radiator 122a of the second antenna 122 and the third main board 124, and the grounding element 122d is spaced from the feeding element 122 c. One end of the grounding element 122d is electrically connected to the radiator 122a, and the other end of the grounding element 122d is electrically connected to the reference ground on the third main board 124. The electrical coupling between the grounding member 122d and the grounding end 1221 of the radiator 122a may be a coupling connection or a direct electrical connection. The electrical coupling between the ground 122d and the ground reference on the third motherboard 124 may be a coupled connection or a direct electrical connection. In the embodiment of the present application, the grounding element 122d may be a conductive spring. Such as metal spring. One end of the grounding piece 122d abuts against the grounding end 1221 of the radiator 122a, and the other end of the grounding piece 122d abuts against the reference ground on the third main board 124. The grounding piece 122d is abutted with the grounding end 1221 of the radiator 122a, so that the contact stability can be ensured, and the reliability of antenna signal transmission can be improved.

Further, as shown in fig. 13, the second antenna 122 further includes a frequency selecting circuit electrically connected between the ground element 122d and the reference ground on the third main board 124. The frequency selection circuit may select desired frequency components and filter undesired frequency components. In other words, by providing the frequency selection circuit, interference of the second antenna 122 to the first antenna 113 (refer to fig. 7) can be reduced, so that the second antenna 122 resonates in a specific frequency range. The frequency selecting circuit may be connected in series between the grounding element 122d and the reference ground on the third main board 124, or may be connected in parallel between the grounding element 122d and the reference ground on the third main board 124. The frequency selecting circuit can be a band-pass frequency selecting circuit or a band-stop frequency selecting circuit. For example, L-type oscillation circuits, C-type oscillation circuits, RC active bandpass filter circuits, ceramic filter circuits, dan Yingpin-body filter circuits, and SAW filter circuits.

The applicant of the present application uses the conductive frame 1201 of the third housing 120 as the radiator 122a of the second antenna 122, and sets the feeding end 1220 on the second conductive frame 120b, so that the length of the radiator 122a between the feeding end 1220 and the grounding end 1221 is greater than or equal to one half wavelength corresponding to the operating frequency of the radiator 122a, and sets the matching circuit and the frequency selecting circuit, so that the performance of the second antenna 122 is tested when the wearable device 10 is worn on the wrist, and the test results are shown in table 1.

TABLE 1 efficiency and return loss of the second antenna 122 at the corresponding frequency

Frequency (MHz)	Efficiency (dB)	Return loss (dB)
			2400	-10.9	13.3
2410	-10.9	13.9
			2420	-10.8	15.6
2430	-10.8	15.1
			2440	-10.8	16.1
2450	-10.9	15.6
			2460	-11.1	15.4
2470	-11	15.5
			2480	-10.9	14.5
2490	-10.9	14.8
			2500	-11.2	13.4

Based on the data in table 1, it can be seen that the efficiency of the second antenna 122 of the wearable device 10 in the wearing state is about-11 dB, the return loss is more than 13dB, and the radiation performance is better.

The application provides a functional band 102, which can be matched with a body 101 or an electronic device 20 to monitor the health condition of a user in real time or realize other extended functions, and an antenna structure is designed for the functional band 102, wherein the antenna structure is integrated on a shell of the functional band 102, so that the antenna still has good antenna performance under the wearing condition of the wearable device 10, and the stable data transmission between the functional band 102 and the body 101 or the electronic device 20 is ensured.

While the foregoing is directed to embodiments of the present application, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the application, and such changes and modifications are intended to be included within the scope of the application.

Claims

1. A wearable device, comprising:

a body including a first display screen and a first antenna, and

The electronic device comprises a body, a functional band, a detector and a second antenna, wherein the functional band is connected with the body, the radio frequency unit of the detector and the second antenna is arranged in an accommodating space formed by a shell of the functional band, at least part of the shell of the functional band forms a radiator of the second antenna, the detector is electrically connected with the radio frequency unit of the second antenna, the radiator of the second antenna is electrically connected with the radio frequency unit of the second antenna, the detector is used for detecting target information and sending the target information to the first antenna through the second antenna, the first antenna is used for receiving the target information and sending the target information to the first display screen so as to display the target information on the first display screen, and/or the detector is used for detecting the target information and sending the target information to a third antenna in the electronic device through the second antenna.

2. The wearable device according to claim 1, wherein the radiator is for transceiving electromagnetic waves to transmit the target information to the first antenna and/or the third antenna.

3. The wearable device of claim 2, further comprising a connection strap connecting the body and the functional strap.

4. The wearable device according to claim 3, wherein the housing comprises a conductive frame, the conductive frame is the radiator, the conductive frame comprises a first side and a second side which are oppositely arranged, the connecting band comprises a first sub-connecting band and a second sub-connecting band, one end of the first sub-connecting band is connected to the body, the other end of the first sub-connecting band is connected to the side of the first side of the functional band, the second sub-connecting band is connected to the side of the second side of the functional band, and the radiator further comprises a feeding end, and the feeding end is located between the first side and the second side.

5. The wearable device of claim 4, wherein the housing of the functional band further comprises a first cover plate and a second cover plate disposed on opposite sides of the conductive frame, and the first cover plate, the conductive frame, and the second cover plate are sequentially connected to enclose the housing space.

6. The wearable device according to claim 5, wherein the functional band further comprises a main board disposed in the accommodating space, the first cover board, the main board and the second cover board are sequentially stacked, and the radio frequency unit is disposed at an edge of the main board and is close to the feeding end of the radiator.

7. The wearable device of claim 6, wherein the second antenna further comprises a feeding member disposed between the radiator and the radio frequency unit, one end of the feeding member being electrically coupled to a feeding end of the radiator, the other end of the feeding member being electrically coupled to the radio frequency unit.

8. The wearable device of claim 7, wherein the second antenna further comprises a matching circuit electrically connected between the feed and the radio frequency unit.

9. The wearable device of claim 7, wherein the second antenna further comprises a ground member disposed between the radiator and the motherboard, the ground member spaced apart from the feed member, one end of the ground member electrically coupled to a ground end of the radiator, and the other end of the ground member electrically coupled to a reference ground on the motherboard.

10. The wearable device of claim 9, wherein a length of the radiator between the feed end and the ground end is greater than or equal to a half wavelength corresponding to an operating frequency of the radiator.

11. The wearable device of claim 10, wherein the second antenna further comprises a frequency selective circuit electrically connected between the ground and a reference ground on the motherboard.

12. The wearable device according to any of claims 1 to 6, wherein the detector comprises one or more of a heart rate detector, a blood pressure detector, an electrocardiograph detector, a blood glucose detector, a pulse detector, a blood oxygen detector, a motion detector, a distance detector, an energy detector, a sleep detector, a position detector, a temperature detector, an infrared detector, a humidity detector, a height detector, a magnetic field detector, a radio frequency detector, a fingerprint detector, a face detector, a sound detector.

13. A communication system, comprising an electronic device and a wearable device according to any one of claims 1 to 12, wherein a third antenna is provided in the electronic device, and wireless communication is performed between the second antenna of the functional band and the third antenna.