Wearable devices and communication systems

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

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a wearable device and a communication system. Background Art

[0002] With the development of intelligent wearable devices (such as watches), the functional requirements of wearable devices for different users have gradually become different. Therefore, how to design wearable devices so that they can meet the diverse and differentiated needs of different users has become a technical problem that needs to be solved. Summary of the Invention

[0003] The present application provides a wearable device and a communication system with extended functions.

[0004] In one aspect, the present application provides a wearable device, comprising:

[0005] a main body, the main body comprising a first display screen and a first antenna; and

[0006] A functional belt, the functional belt is connected to the main body, the functional belt includes a detector and a second antenna, the detector is electrically connected to the second antenna, 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 target information and send the target information to a third antenna in the electronic device through the second antenna.

[0007] On the other hand, the present application also provides a communication system, including an electronic device and the wearable device, 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.

[0008] The wearable device provided in this application is provided with a functional band that can detect target information, allowing the wearable device to have additional extended functions in addition to the main body function. Therefore, wearable devices with different functions can be designed according to the needs of different users to meet the diverse and differentiated needs of different users. The second antenna of the functional band wirelessly transmits the target information to the first antenna of the main body or the third antenna of the electronic device, which is convenient for the user to view through the first display of the main body or the electronic device. That is, the functional band does not need to have a display, making the functional band lighter and more convenient to wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments.

[0010] Figure 1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0011] Figure 2 yes Figure 1 A schematic diagram of electronic equipment in the communication system shown;

[0012] Figure 3 yes Figure 2 an exploded schematic diagram of the electronic device shown;

[0013] Figure 4 yes Figure 1 Schematic diagram of the wearable device in the communication system shown;

[0014] Figure 5 yes Figure 4 The wearable device shown includes a schematic diagram of a body and a functional band;

[0015] Figure 6 yes Figure 4 The wearable device shown includes a main body, a functional belt and a connecting belt;

[0016] Figure 7 yes Figure 6 Schematic diagram of the functional band shown with a second antenna;

[0017] Figure 8 yes Figure 7 A schematic diagram of the housing of the functional belt shown;

[0018] Figure 9 yes Figure 7 Schematic diagram of the housing, second antenna and detector of the functional strip shown;

[0019] Figure 10 yes Figure 9 The second antenna shown includes a schematic diagram of a feeding component and a grounding component;

[0020] Figure 11 yes Figure 10 A schematic diagram showing a second antenna having a radiator with a feeding terminal and a ground terminal;

[0021] Figure 12 yes Figure 10 A schematic diagram showing a matching circuit provided between the feed element and the radio frequency unit;

[0022] Figure 13 yes Figure 10 Schematic diagram of a frequency selection circuit provided between the grounding member and the main board. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. The embodiments listed in the present application can be appropriately combined with each other.

[0024] like Figure 1 As shown, Figure 1 A schematic diagram of a communication system 100 provided in an embodiment of the present application. The communication system 100 provided in an embodiment of the present application includes an electronic device 20 and a wearable device 10. The electronic device 20 can be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an e-reader, a handheld computer, an electronic display screen, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, as well as a cellular phone, a personal digital assistant (PDA), an augmented reality (AR)\virtual reality (VR) device, a media player, etc. The following embodiments take a mobile phone as an example. The wearable device 10 can be a watch, a bracelet, a bracelet, a necklace, etc. The following embodiments take a watch as an example.

[0025] like Figure 2 As shown, Figure 2 This is a schematic diagram of an electronic device 20 provided in an embodiment of the present application. The electronic device 20 includes a first housing 201 , a second display screen 202 , and a third antenna 203 .

[0026] Please refer to Figure 2 and Figure 3 The first housing 201 includes a middle frame 210 and a back panel 211. The middle frame 210 and back panel 211 may be integrally formed or connected. For example, the middle frame 210 and back panel 211 may be bonded together. The second display screen 202 is disposed on a side of the middle frame 210 facing away from the back panel 211. The second display screen 202, the middle frame 210, and the back panel 211 enclose a first receiving space 204.

[0027] Optionally, the second display screen 202 may be 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, or the like. The back panel 211 may be made of metal, alloy, stainless steel, carbon fiber, ceramic, glass, plastic, or the like. In the embodiment of the present application, the middle frame 210 is a metal middle frame, and the back panel 211 is a glass back panel.

[0028] Please refer to Figure 2 and Figure 3The second display screen 202 is electrically connected to the third antenna 203. Specifically, the electronic device 20 further includes a first mainboard 205 and a first controller 206 located within the first receiving space 204. The radio frequency unit 230 of the third antenna 203 is disposed on the first mainboard 205. The first controller 206 is also disposed on the first mainboard 205. One end of the first controller 206 is electrically connected to the second display screen 202, and the other end of the first controller 206 is electrically connected to the radio frequency unit 230 of the third antenna 203. The first controller 206 is used to control the third antenna 203 to transmit and receive antenna signals and the display of the second display screen 202.

[0029] The third antenna 203 may be partially or completely housed within the first housing space 204. In one embodiment, the third antenna 203 is disposed within the first housing 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, etc., which is built into the first housing space 204. In another embodiment, the third antenna 203 is partially housed within the first housing space 204. Specifically, the radio frequency unit 230 of the third antenna 203 is disposed on the first mainboard 205, and at least a portion of the middle frame 210 and / or the back panel 211 forms the radiator of the third antenna 203. For example, a portion of the metal middle frame 210 forms the radiator of the third antenna 203. By having the middle frame 210 and / or the back panel 211 form the radiator of the third antenna 203, shielding and loss of the third antenna 203 can be reduced, thereby ensuring reliability when the third antenna 203 communicates with the wearable device 10.

[0030] like Figure 4 As shown, Figure 4 This is a schematic diagram of a wearable device 10 provided in an embodiment of the present application. The wearable device 10 includes a body 101 and a functional band 102.

[0031] Please refer to Figure 4 and Figure 5, the main body 101 can be the body of a watch, the main body of a bracelet, the decorative body of a bracelet, the decorative body of a necklace, etc. In the embodiment of the present application, the main body 101 is the body of a watch. The main body 101 includes a second shell 110, a first display screen 112 and a first antenna 113. Among them, the first display screen 112 is connected to the second shell 110 to form a second receiving space 114. The first antenna 113 is partially or completely received in the second receiving space 114. Among them, the first display screen 112 can be a flexible screen, a hard screen, etc. The second shell 110 can be a conductive material or an insulating material. When the second shell 110 is a conductive material, at least part of the second shell 110 can form the radiator of the first antenna 113, and the radio frequency unit of the first antenna 113 can be arranged in the second receiving space 114. By making the second shell 110 form the radiator of the first antenna 113, the shielding and loss of the first antenna 113 can be reduced, thereby ensuring that the first antenna 113 is in contact with the functional band 102 or the electronic device 20 (refer to Figure 1 ) reliability during communication. When the second shell 110 is made of insulating material, the first antenna 113 can be entirely disposed in the second containing space 114, and transmit and receive antenna signals through the second shell 110. In other words, the first antenna 113 can be a built-in antenna disposed in the second containing space 114, for example: the first antenna 113 is a ceramic antenna, FPC antenna, PCB antenna, steel sheet antenna, LDS antenna, etc., which is built into the second containing space 114. The first antenna 113 is disposed in the second containing space 114, which is conducive to simplifying the installation and design of the first antenna 113. Of course, in other embodiments, the first antenna 113 can also be an external antenna, that is, the first antenna 113 is disposed outside the second shell 110.

[0032] The first display screen 112 is electrically connected to the first antenna 113. Specifically, in the embodiment of the present application, a second mainboard 115 and a second controller 116 are further provided in the second receiving space 114 of the main body 101. The radio frequency unit of the first antenna 113 is provided on the second mainboard 115. The second controller 116 is also provided on the second mainboard 115. One end of the second controller 116 is electrically connected to the first display screen 112, and the other end of the second controller 116 is electrically connected to the radio frequency unit of the first antenna 113. The second controller 116 is used to control the first antenna 113 to transmit and receive antenna signals and the display of the first display screen 112.

[0033] The functional band 102 is connected to the body 101. In the embodiment of the present application, the functional band 102 can be directly connected to the body 101 or connected to the body 101 through other structural members. In other words, other structural members, decorative members, functional members, connecting members, etc. can be set between the functional band 102 and the body 101.

[0034] In one embodiment, one end of the functional band 102 is connected to one end of the body 101, and the other end of the functional band 102 is connected to the other end of the body 101. The functional band 102 and the body 101 form a ring-shaped wearable device 10. When the wearable device 10 is worn on the wrist, the functional band 102 at least partially fits against the inside of the wrist, while the body 101 fits against the outside of the wrist. This facilitates the functional band 102 to detect heart rate, electrocardiogram, pulse, and other functions. Furthermore, the functional band 102 integrates multiple functions, including wearing, securing the body 101, and performing functional detection, allowing the wearable device 10 to have additional functions beyond those of the body 101.

[0035] In another embodiment, if Figure 6 As shown, the wearable device 10 also includes a connecting strap 103 connected between the functional strap 102 and the main body 101. Specifically, the connecting strap 103 includes a first sub-connecting strap 130 and a second sub-connecting strap 131. The first sub-connecting strap 130 is connected between one end of the functional strap 102 and one end of the main body 101. The second sub-connecting strap 131 connects to the end of the functional strap 102 facing away from the first sub-connecting strap 130. The end of the second sub-connecting strap 131 facing away from the functional strap 102 is used to connect to the other end of the main body 101. In other words, the main body 101, the first sub-connecting strap 130, the functional strap 102, and the second sub-connecting strap 131 are connected end to end to form the wearable device 10.

[0036] The first and second sub-connecting straps 130, 131 can be flexible or rigid. The materials of the first and second sub-connecting straps 130, 131 can include metal, leather, plastic, and the like. Optionally, the first and second sub-connecting straps 130, 131 can be detachably connected to the main body 101 or non-detachably connected. In this embodiment of the present application, the first and second sub-connecting straps 130, 131 can be detachably connected to the second shell 110 of the main body 101 to facilitate replacement of the first and second sub-connecting straps 130, 131, or the main body 101, saving costs. Of course, the first and second sub-connecting straps 130 and 131 can be detachably connected to the functional strap 102 or non-detachably connected to the functional strap 102. When the first and second sub-connecting straps 130, 131, and functional strap 102 are detachably connected, replacement of the functional strap 102 is facilitated. The length of the first sub-connecting strap 130 and the length of the second sub-connecting strap 131 can be designed according to actual needs. For example, when the first sub-connecting strap 130, the functional part, the second sub-connecting strap 131 and the main body 101 are connected end to end in sequence to form the wearable device 10, the functional part can be attached to the inside of the wrist and the main body 101 can be attached to the outside of the wrist.

[0037] In this embodiment, by connecting the functional band 102 between the first sub-connecting band 130 and the second sub-connecting band 131, the functional band 102 can directly contact the user's wrist to achieve detection without being blocked by the connecting band 103. In addition, the 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 does not need to pass through the connecting band 103, thereby reducing the impact of the first sub-connecting band 130 or the second sub-connecting band 131 on the wireless transmission performance of the functional band 102. Of course, in other embodiments, the functional band 102 can be provided on the connecting band 103, and the functional band 102 can be connected to the body 101 through the connecting band 103.

[0038] like Figure 7 As shown, the functional band 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 .

[0039] Please refer to Figure 7 and Figure 8 The third housing 120 includes a conductive frame 1201, a first cover plate 1202, and a second cover plate 1203. The first cover plate 1202 and the second cover plate 1203 are disposed opposite each other. The conductive frame 1201 is connected between the first cover plate 1202 and the second cover plate 1203. The first cover plate 1202, the conductive frame 1201, and the second cover plate 1203 are sequentially connected to form a third receiving space 123.

[0040] Please refer to Figures 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 frame 120a is connected to the first sub-connecting strip 130. The third conductive frame 120c is connected to the second sub-connecting strip 131. Of course, in other embodiments, the first conductive frame 120a can 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, etc. Metal conductive frames, alloy conductive frames, and carbon fiber conductive frames have high strength and can have high bearing capacity while improving the performance of the second antenna 122. Among them, the first conductive frame 120a, the second conductive frame 120b, and the third conductive frame 120c can be arranged to form various shapes such as rings and rectangles.

[0041] Detector 121 is used to detect target information. Optionally, detector 121 is used for one or more of heart rate detection, blood pressure detection, electrocardiogram detection, blood sugar 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 recognition, facial recognition, and voice recognition. Detector 121 is located in third storage space 123.

[0042] In one embodiment, please refer to Figures 7 to 9 , the functional belt 102 also includes a third main board 124 arranged in the third receiving space 123. The detector 121 includes a detection unit 121a and a processing unit 121b. The detection unit 121a can be a camera, an electrode, a detection light, etc. The processing unit 121b can be a processing chip. The processing unit 121b is arranged on the third main board 124 and is electrically connected to the detection unit 121a. The detection unit 121a faces the first cover plate 1202. Optionally, a through hole is provided on the first cover plate 1202, and the detection unit 121a obtains target information through the through hole on the first cover plate 1202. Of course, in other embodiments, a battery 125 can also be provided in the third receiving space 123 of the functional belt 102, and the battery 125 is electrically connected to the third main board 124 to supply power to the third main board 124.

[0043] Among them, the target information can be understood as one or more of heart rate, blood pressure, electrocardiogram, blood sugar, pulse, blood oxygen, movement, distance, energy, sleep, location, temperature, infrared, humidity, altitude, magnetic field, radio frequency, fingerprint, face, and sound.

[0044] Please refer to Figure 7 and Figure 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 to achieve target information transmission. The detector 121 and the radio frequency unit 122b of the second antenna 122 are disposed in the third receiving space 123.

[0045] The second antenna 122 is used to receive target information and transmit the target information to the first antenna 113 so that the first display screen 112 displays the target information, and / or the second antenna 122 is used to transmit the target information to the third antenna 203 in the electronic device 20 so that the second display screen 202 of the electronic device 20 displays 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 in 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 in the main body 101.

[0046] In one embodiment, the second antenna 122 receives target information detected by the detector 121 and wirelessly transmits the received target information to the first antenna 113. After the first antenna 113 receives the target information transmitted by the second antenna 122, it displays the target information on the first display screen 112 under the control of the first controller 206.

[0047] 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. After the third antenna 203 receives the target information transmitted by the first antenna 113, it displays the target information on the second display screen 202 under the control of the second controller 116.

[0048] 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 first antenna 113 and the third antenna 203. After the first antenna 113 receives the target information transmitted by the second antenna 122, it displays the target information on the first display screen 112 under the control of the first controller 206. After the third antenna 203 receives the target information transmitted by the second antenna 122, it displays the target information on the second display screen 202 under the control of the second controller 116.

[0049] The wearable device 10 provided in this application is provided with a functional band 102 that can detect target information, allowing the wearable device 10 to have other extended functions in addition to the functions of the main body 101. Therefore, wearable devices 10 with different functions can be designed according to the needs of different users to meet the diverse and differentiated needs of different users. The second antenna 122 of the functional band 102 wirelessly transmits the target information to the first antenna 113 of the main body 101 or the third antenna 203 of the electronic device 20, making it convenient for the user to view it through the first display 112 of the main body 101 or the second display 202 of the electronic device 20. That is, the functional band 102 does not need to be designed with a display, making the functional band 102 lighter and more convenient to wear.

[0050] Please refer to Figure 9 and Figure 10 The second antenna 122 includes a radiator 122a, a radio frequency unit 122b, a feeder 122c, and a grounding member 122d. Optionally, at least part of the third shell 120 of the functional band 102 forms the radiator 122a of the second antenna 122. For example, the first conductive frame 120a, the second conductive frame 120b, and the third conductive frame 120c form the 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 Figure 7 ) and / or the third antenna 203 (refer to Figure 2 ).

[0051] By having the third housing 120 of the functional band 102 form the radiator 122a of the second antenna 122, the loss during the transmission and reception of antenna signals by the second antenna 122 can be reduced, thereby improving the performance of the second antenna 122. Furthermore, compared to a solution in which the second antenna 122 is entirely contained within the third receiving space 123, having the third housing 120 of the functional band 102 form the second antenna 122 can save space in the third receiving space 123 and improve the space utilization of the third receiving space 123.

[0052] Optional, please refer to Figure 10 and Figure 11 The radiator 122a of the second antenna 122 includes a feeding terminal 1220 and a grounding terminal 1221. The feeding terminal 1220 is used to electrically connect to the RF unit 122b of the second antenna 122. The grounding terminal 1221 is used to electrically connect to the reference ground on the third mainboard 124.

[0053] In one embodiment, please refer to Figure 7 and Figure 11 , the feeding end 1220 is provided on the second conductive frame 120b. By providing the feeding end 1220 on the second conductive frame 120b, since the second conductive frame 120b is not directly connected to the connecting strip 103 or the main body 101, the influence of the connecting strip 103 or the main body 101 on the signal transmission and reception of the second antenna 122 can be reduced. The grounding end 1221 can be provided on the first conductive frame 120a, the second conductive frame 120b or the third conductive frame 120c. In one embodiment, the grounding end 1221 is provided 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 half the wavelength corresponding to the operating frequency of the radiator 122a. By ensuring that the length of radiator 122a between feed end 1220 and ground end 1221 is greater than or equal to half the wavelength corresponding to the operating frequency of radiator 122a, the center frequency of radiator 122a and the input impedance of second antenna 122 can be increased, thereby increasing the bandwidth and improving the efficiency of second antenna 122. Optionally, second antenna 122 is a Bluetooth antenna, and the frequency of second antenna 122 is 2.4 to 2.5 GHz.

[0054] The RF unit 122b of the second antenna 122 is located at an edge of the third mainboard 124 and is proximate to the radiator 122a of the second antenna 122. In one embodiment, the third mainboard 124 is rectangular. The first side 124a of the third mainboard 124 is disposed opposite the second conductive frame 120b of the third housing 120. The RF unit 122b of the second antenna 122 is disposed proximate to the first side 124a of the third mainboard 124. By locating the RF unit 122b of the second antenna 122 at an edge of the third mainboard 124 and proximate to 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, thereby reducing path loss during signal transmission between the RF unit 122b of the second antenna 122 and the radiator 122a of the second antenna 122.

[0055] In one embodiment, please refer to Figure 10 and Figure 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 122c. Specifically, the feeding element 122c of the second antenna 122 is arranged 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 connection between the feeding element 122c and the feeding end 1220 of the radiator 122a can be a coupling connection or a direct electrical connection. The electrical connection between the feeding element 122c and the RF unit 122b can be a coupling connection or a direct electrical connection. In the embodiment of the present application, the feeding element 122c can be a conductive spring. For example: a metal spring. One end of the feeder 122c abuts the feeder end 1220 of the radiator 122a, and the other end of the feeder end 1220 abuts the RF unit 122b of the second antenna 122. The abutment between the feeder 122c and the feeder end 1220 of the radiator 122a ensures contact stability and improves antenna signal transmission reliability.

[0056] Further, such as Figure 12 As shown, the second antenna 122 also includes a matching circuit electrically connected between the feed element 122c and the RF unit 122b. The matching circuit can be an L-shaped, π-shaped, or T-shaped hybrid matching circuit, a single-branch matching circuit, a dual-branch matching circuit, or a multi-stage matching circuit. The matching circuit can be connected in series between the feed element 122c and the RF unit 122b of the second antenna 122, or in parallel between the feed element 122c and the RF unit 122b of the second antenna 122. The matching circuit can be used to adjust the quality factor, bandwidth, and frequency of the second antenna 122, thereby optimizing the antenna's return loss and improving the overall performance of the second antenna 122.

[0057] The ground terminal 1221 of the radiator 122a can be connected to the reference ground on the third mainboard 124 via a grounding member 122d. Specifically, the grounding member 122d of the second antenna 122 is disposed between the radiator 122a of the second antenna 122 and the third mainboard 124, and is spaced apart from the feeder 122c. One end of the grounding member 122d is electrically connected to the radiator 122a, and the other end of the grounding member 122d is electrically connected to the reference ground on the third mainboard 124. The electrical connection between the grounding member 122d and the ground terminal 1221 of the radiator 122a can be a coupled connection or a direct electrical connection. The electrical connection between the grounding member 122d and the reference ground on the third mainboard 124 can be a coupled connection or a direct electrical connection. In this embodiment of the present application, the grounding member 122d can be a conductive spring, for example, a metal spring. One end of the grounding member 122d abuts against the grounding end 1221 of the radiator 122a, and the other end of the grounding member 122d abuts against the reference ground on the third mainboard 124. The abutment between the grounding member 122d and the grounding end 1221 of the radiator 122a ensures contact stability and improves the reliability of antenna signal transmission.

[0058] Further, such as Figure 13 As shown, the second antenna 122 also includes a frequency selection circuit electrically connected between the grounding member 122d and the reference ground on the third main board 124. The frequency selection circuit can select the required frequency components and filter out the unnecessary frequency components. In other words, by setting the frequency selection circuit, the second antenna 122 can reduce the impact of the first antenna 113 (refer to Figure 7 ) interference, causing the second antenna 122 to resonate within a specific frequency range. The frequency selection circuit can be connected in series between the grounding element 122d and the reference ground on the third mainboard 124, or in parallel between the grounding element 122d and the reference ground on the third mainboard 124. The frequency selection circuit can be a bandpass frequency selection circuit or a bandstop frequency selection circuit. Examples include an L-type oscillator circuit, a C-type oscillator circuit, an RC active bandpass filter circuit, a ceramic filter circuit, a quartz crystal filter circuit, and a surface acoustic wave filter circuit.

[0059] The applicant of this application uses the conductive frame 1201 of the third shell 120 as the radiator 122a of the second antenna 122, and sets a feeding end 1220 on the second conductive frame 120b, so that the length of the radiator 122a between the feeding end 1220 and the ground end 1221 is greater than or equal to half the wavelength corresponding to the operating frequency of the radiator 122a, and sets a matching circuit and a frequency selection circuit, so that the performance of the second antenna 122 is tested when the wearable device 10 is worn on the wrist. The test results are shown in Table 1.

[0060] Table 1: Efficiency and return loss of the second antenna 122 at corresponding frequencies

[0061] 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

[0062] Based on the data in Table 1, it can be seen that when the wearable device 10 is worn, the efficiency of the second antenna 122 is around -11 dB on average, and the return loss is above 13 dB, indicating good radiation performance.

[0063] The present application provides a functional band 102 that can cooperate with a main body 101 or an electronic device 20 to monitor the user's health status in real time or realize other extended functions, and designs an antenna structure for the functional band 102. The antenna structure is integrated on the shell of the functional band 102, so that when the wearable device 10 is worn, the antenna still has good antenna performance, ensuring stable data transmission between the functional band 102 and the main body 101 or the electronic device 20.

[0064] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A wearable device, characterized in that: include: A main body, comprising a first display screen and a first antenna; and a functional belt connected to the main body, comprising a detector and a second antenna, wherein the detector and a radio frequency unit of the second antenna are disposed in a receiving space formed by a housing of the functional belt, and at least a portion of the housing of the functional belt forms a radiator of the second antenna, the detector being electrically connected to the radio frequency unit of the second antenna, and the radiator of the second antenna being electrically connected to the radio frequency unit of the second antenna, the detector being configured to detect target information and transmit the target information to the first antenna via the second antenna, and the first antenna being configured to receive the target information and transmit 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 to detect target information and send the target information to a third antenna in the electronic device via the second antenna.

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

3. The wearable device according to claim 2, wherein: The wearable device further includes a connecting belt, which connects the body and the functional belt.

4. The wearable device according to claim 3, wherein: The shell includes a conductive frame, which is the radiator. The conductive frame includes a first side and a second side that are arranged opposite to each other; the connecting belt includes a first sub-connecting belt and a second sub-connecting belt, one end of the first sub-connecting belt is connected to the main body, the other end of the first sub-connecting belt is connected to the side where the first side of the functional belt is located, and the second sub-connecting belt is connected to the side where the second side of the functional belt is located. The radiator also includes a feeding end, which is located between the first side and the second side.

5. The wearable device according to claim 4, wherein: The housing of the functional belt further includes a first cover plate and a second cover plate disposed on opposite sides of the conductive frame. The first cover plate, the conductive frame and the second cover plate are sequentially connected to surround and form a receiving space.

6. The wearable device according to claim 5, wherein: The functional band also includes a mainboard arranged in the receiving space, the first cover plate, the mainboard and the second cover plate are stacked in sequence, and the radio frequency unit is arranged at the edge of the mainboard and close to the feeding end of the radiator.

7. The wearable device according to claim 6, wherein: The second antenna further includes a feeding element, which is provided between the radiator and the radio frequency unit. One end of the feeding element is electrically connected to the feeding end of the radiator, and the other end of the feeding element is electrically connected to the radio frequency unit.

8. The wearable device according to claim 7, wherein: The second antenna further includes a matching circuit electrically connected between the feeding element and the radio frequency unit.

9. The wearable device according to claim 7, wherein: The second antenna also includes a grounding member, which is arranged between the radiator and the mainboard, and is spaced apart from the feeding member. One end of the grounding member is electrically connected to the ground end of the radiator, and the other end of the grounding member is electrically connected to the reference ground on the mainboard.

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

11. The wearable device according to claim 10, wherein: The second antenna further includes a frequency selection circuit electrically connected between the grounding element and a reference ground on the mainboard.

12. The wearable device according to any one of claims 1 to 6, wherein: The detector includes one or more of a heart rate detector, a blood pressure detector, an electrocardiogram 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, an altitude detector, a magnetic field detector, a radio frequency detector, a fingerprint detector, a face detector, and a sound detector.

13. A communication system, characterized in that: The device comprises an electronic device and the 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.

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