Wearable device with human body communication function

Abstract

The invention discloses wearable equipment with a human body communication function. The wearable device is of an annular structure in a wearing state. The wearable equipment comprises a wearable structure, a first electrode and a second electrode, the first electrode is arranged on the outer surface of the wearable structure; the second electrode is arranged on the outer surface or the inner surface of the wearable structure; the first electrode and the second electrode are insulated; when the wearable device is in a wearing state, the second electrode and the first electrode are close to or in contact with the skin of the human body, and the first communication signal is transmitted between the wearable device and the human body through the first electrode and the second electrode, so that the wearable device is in a current coupling HBC communication mode. According to the wearable device, the loss in a current coupling HBC communication mode can be reduced, so that the communication quality is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of human body communication, and in particular, relates to a wearable device with human body communication function. Background Art

[0002] Human body communication (HBC) is a data communication technology that uses the human body as a signal transmission medium. It is an ultra-low power communication technology. Therefore, electronic devices with low power consumption requirements can use HBC technology for communication to improve the endurance of electronic devices.

[0003] HBC mainly includes two communication modes: capacitive coupling HBC and current coupling HBC. Among them, the capacitive coupling HBC communication mode uses the body surface as the medium for transmission, and has relatively small signal attenuation, which is suitable for low-loss long-distance transmission on the body surface. The current coupling HBC communication mode uses the body tissue as the medium to achieve signal transmission. Compared with the capacitive coupling HBC communication mode, the transmission loss is greater, but the signal is not easily affected by electromagnetic interference from the surrounding environment, has good confidentiality, and is suitable for short-distance transmission in the body.

[0004] At present, under the premise of realizing the communication function, how to make wearable devices produce low loss in the current coupling HBC communication mode is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides a wearable device with human body communication function, which can optimize the electrode arrangement scheme in the current coupling HBC communication mode so that it has low loss, thereby improving the communication quality.

[0006] In a first aspect, an embodiment of the present application provides a wearable device with a human body communication function. The wearable device includes a wearable structure, a first electrode, and a second electrode. The wearable structure is used to wear the wearable device on a wearable part of a human body so that the wearable device is in a wearable state. Based on this, the wearable structure can be constructed as a ring structure in a wearable state so that the wearable device can be worn on a designated part of a human body (such as a finger or a wrist). The first electrode is disposed on the outer surface of the wearable structure; the second electrode is on the outer surface or the inner surface of the wearable structure. The second electrode is insulated from the first electrode. When the wearable device is in a wearable state, the second electrode and the first electrode are close to or in contact with the skin of the human body, and the first communication signal is transmitted between the wearable device and the human body via the first electrode and the second electrode, so that the wearable device is in a current-coupled HBC communication mode.

[0007] The wearable device supports the current-coupled HBC communication mode. For the case where the first electrode is on the outer surface of the wearable structure and the second electrode is on the inner surface of the wearable structure, in the current-coupled HBC communication mode, the current corresponding to the first communication signal starts from the first electrode or the second electrode and returns to the second electrode or the first electrode. Since it is impossible to directly pass through the ring body of the wearable structure from the first electrode located on the outer surface to reach the second electrode located on the inner surface, the current needs to start from the position of the first electrode on the outer surface of the wearable structure and flow along the human body path that bypasses the ring body of the wearable structure to the position of the second electrode on the inner surface of the wearable structure. Compared with the solution in which both the first electrode and the second electrode are on the inner surface of the wearable structure, in the solution in which both the first electrode and the second electrode are on the inner surface of the wearable structure, the current can flow directly from the position of the first electrode on the inner surface to the position of the second electrode also located on the inner surface without bypassing the wearable structure. Obviously, in the wearable device provided in the embodiment of the present application, since one electrode is located on the outer surface of the wearable structure and the other electrode is located on the inner surface of the wearable structure, the current return needs to bypass the ring body of the wearable structure, which makes the return path between the first electrode and the second electrode longer, the isolation between the first electrode and the second electrode is better, and the transmission loss is reduced, thereby improving the transmission quality of human body communication.

[0008] In the case where both the first electrode and the second electrode are on the outer surface of the wearable structure, since the wearable structure is a ring segment structure, the first electrode and the second electrode are on the outer surface of the ring structure, and the distance between the first electrode and the second electrode is larger than that in the case where the first electrode and the second electrode are on the inner surface of the same position on the ring structure. Therefore, in the current-coupled HBC communication mode, taking the first electrode as the positive signal electrode and the second electrode as the negative signal electrode as an example, the return path of the current corresponding to the first communication signal from the first electrode to the second electrode is longer, the isolation between the first electrode and the second electrode is better, and the transmission loss is reduced, thereby improving the transmission quality of human body communication.

[0009] Exemplarily, the wearable device may be a wearable ring. It should be understood that the wearable ring is worn on the wearing finger, and naturally, the inner surface of the wearable ring is in contact with the wearing finger. At the same time, due to the special configuration of the human palm, there are adjacent fingers to the wearing finger. Therefore, when the wearable ring is worn on the wearing finger, the outer surface of the wearable ring can just be close to or in contact with the adjacent finger. It can be seen that the use scenario of the wearable ring supports the implementation of the above embodiment. Specifically, the first electrode is set on the outer surface of the wearable ring, and the second electrode is set on the inner surface or outer surface of the wearable ring, which can also be close to or in contact with the human body. Moreover, in the use scenario of the wearable ring, when the user wears the wearable ring normally without giving external prompts to prompt the human body to actively contact or approach the first electrode on the outer surface and the second electrode on the inner surface or outer surface, the first electrode and the second electrode can be respectively in contact with or close to the human body. Compared with the solutions in the related art that require users to deliberately approach or touch the electrodes, the wearable ring can achieve approach or contact when worn normally. It can be seen that this example can provide seamless human body communication, thereby improving the convenience of human body communication and user experience.

[0010] In some embodiments, the wearable device further includes a third electrode; the first electrode and the second electrode are insulated from the third electrode respectively. When the wearable device is in a worn state, the second electrode and the first electrode are close to or in contact with human skin, and the third electrode is not close to or in contact with the human body. The second communication signal is transmitted between the wearable device and the human body via one of the first electrode and the second electrode and the third electrode, realizing capacitive coupling HBC of the second communication signal, so that the wearable device is in a capacitive coupling HBC communication mode.

[0011] It can be seen that in this embodiment, by adding a third electrode that does not contact the human body in the worn state, the third electrode can be used as a ground electrode in the capacitive coupling HBC communication mode, so that the wearable device supports the capacitive coupling HBC communication mode. In this case, the wearable device supports both the current coupling HBC communication mode and the capacitive coupling HBC communication mode, so as to support the communication needs of more application scenarios. Exemplarily, the third electrode can be set on the outer surface of the wearable structure or inside the wearable structure to meet the requirement of not contacting the human body.

[0012] In some embodiments of the present application, the wearable device also includes: a circuit structure, which is arranged in the wearable structure; the circuit structure is electrically connected to the first electrode and the second electrode respectively, and the third electrode is electrically connected to the ground, and the circuit structure is used to control the first electrode and the second electrode to be used as two signal electrodes of the current-coupled HBC communication mode, so that the wearable device is in the current-coupled HBC communication mode; or, control one of the first electrode and the second electrode to be used as a signal electrode of the capacitive coupling HBC communication mode, and the third electrode to be used as a ground electrode of the capacitive coupling HBC communication mode, so that the wearable device is in the capacitive coupling HBC mode.

[0013] In this embodiment, the circuit structure is connected to the first electrode and the second electrode respectively, so that the circuit structure can achieve the purpose of controlling the wearable device to switch between the current coupling HBC communication mode and the capacitive coupling HBC communication mode by controlling the electrodes, so as to select the appropriate communication mode for communication according to different application scenarios, thereby meeting the communication needs in different application scenarios. For example, when confidentiality is required, the wearable device is controlled to be in the current coupling HBC communication mode; when long-distance low-power transmission is required, the wearable device is controlled to be in the capacitive coupling HBC communication mode.

[0014] In some designs, the circuit structure can be used to control the electrode with better transmission quality among the first electrode and the second electrode to serve as the signal electrode of the capacitive coupling HBC communication mode.

[0015] It should be understood that the transmission quality of the same electrode used as a signal electrode at different time points may be different due to various factors such as wearing posture. Therefore, in this embodiment, the circuit structure selects an electrode with better transmission quality from the first electrode to the second electrode as the signal electrode of the capacitive coupling HBC, which can improve the communication quality.

[0016] In some designs, the circuit structure is also used to control the electrode with better transmission quality among the first electrode and the second electrode to serve as the positive signal electrode of the current-coupled HBC.

[0017] It should be understood that the transmission quality of the same electrode used as a positive signal electrode at different time points may be different due to various factors such as wearing posture. Therefore, in this embodiment, the circuit structure selects an electrode with better transmission quality from the first electrode to the second electrode as the positive signal electrode of the current-coupled HBC, which can improve the communication quality.

[0018] In some embodiments of the present application, the wearable structure includes a first wearable structure; the outer surface of the first wearable structure is used as the outer surface of the wearable structure; the material of the first wearable structure is a conductive material or a non-conductive material. Taking a wearable ring as an example, the wearable structure of the wearable ring includes a soft shell and a hard shell sleeved on the outside of the soft shell, and the first wearable structure is a hard shell.

[0019] Optionally, when the material of the first wearable structure is a conductive material and the first electrode and the third electrode are both arranged on the outer surface of the first wearable structure, a position of the first wearable structure between the first electrode and the third electrode has a gap to achieve insulation between the first electrode and the third electrode.

[0020] Optionally, when the material of the first wearable structure is a conductive material and the first electrode and the second electrode are both arranged on the outer surface of the first wearable structure, a gap is provided at a position of the first wearable structure between the first electrode and the second electrode to achieve insulation between the first electrode and the second electrode.

[0021] Optionally, when the material of the first wearable structure is a conductive material and the first electrode, the third electrode and the second electrode are all arranged on the outer surface of the first wearable structure, the first wearable structure has gaps at a position between the first electrode and the third electrode, a position between the second electrode and the third electrode, and a position between the first electrode and the second electrode to achieve insulation between the first electrode, the second electrode and the third electrode.

[0022] In the case where the first wearable structure is made of a conductive material, the presence of the first wearable structure allows the electrodes located on its outer surface to be electrically conductive through the first wearable structure, thereby insulating the electrodes. Based on this, in the case where the first wearable structure is made of a conductive material, this embodiment provides a gap at the position where the first wearable structure is located between the two electrodes to block the current from being transmitted between the two electrodes located on the outer surface through the first wearable structure, thereby achieving the purpose of insulation.

[0023] Optionally, the gap is filled with an insulator to achieve better insulation, and at the same time, the outer surface of the wearable device can be made smoother, which contributes to the aesthetic effect of the outer surface of the wearable device.

[0024] In some designs, the first wearable structure has a ring segment. When the first wearable structure is made of a conductive material, the first electrode is located in the ring segment of the first wearable structure; and when the third electrode is disposed on the outer surface of the first wearable structure, the third electrode is also located in the ring segment of the first wearable structure; when the second electrode is disposed on the outer surface of the shell, the second electrode is also located in the ring segment of the shell.

[0025] In this embodiment, when the first wearable structure is made of conductive material, the first wearable structure meets the requirements of the electrode for conductive properties and can be reused as an electrode. Therefore, in this embodiment, for the electrode disposed on the outer surface of the first wearable structure among the three electrodes, the ring segment of the first wearable structure can be reused, saving the cost of additionally arranging electrodes.

[0026] In some embodiments, the wearable structure includes a top ring segment, a bottom ring segment, a first side ring segment, and a second side ring segment. The top ring segment is opposite to the bottom ring segment, the first side ring segment is one of the ring segments located between the top ring segment and the bottom ring segment, and the second side ring segment is another ring segment between the top ring segment and the bottom ring segment. The wearable structure has identification information, and the identification information is used to identify one or more of the top ring segment, the bottom ring segment, the first side ring segment, and the second side ring segment to indicate the orientation of the wearable device in the wearing state, so that the area of ​​the outer surface of the wearable structure corresponding to the top ring segment can not contact or approach the human body.

[0027] It should be noted that, in order to meet the communication requirements, when the wearable device is in the wearing state, the first electrode and the second electrode provided on the wearable structure are in contact with or close to the human body, and the third electrode is not in contact with or close to the human body. Therefore, by setting identification information on the wearable structure to indicate the orientation of the wearable device in the wearing state, each electrode is in a suitable position in the wearing state, so as to achieve the purpose of making the first electrode and the second electrode in contact with or close to the human body, and the third electrode not in contact with or close to the human body, so as to meet the communication requirements.

[0028] Optionally, the wearable device is a wearable finger ring. The identification information includes a boss shape, and the boss shape is used to identify the top ring segment so that the top ring segment faces the side toward which the back of the wearing finger faces when the wearer is in a worn state.

[0029] It should be understood that there is no adjacent finger on the side that the back of the wearing finger faces, so when the top ring segment faces the side that the back of the wearing finger faces in the worn state, the purpose of preventing the area of ​​the outer surface of the wearing structure corresponding to the top ring segment from contacting or approaching the human body can be achieved. It should be noted that since the boss shape has a limiting effect, when the wearable ring is worn on the wearing finger, the boss shape is used to limit the top ring segment of the wearable ring to the side that the back of the wearing finger faces without rotation, so that each electrode can be in a suitable position in the worn state.

[0030] In some optional embodiments, the wearable structure includes a first ring segment and a second ring segment. The first ring segment and the second ring segment are both distributed in the first side ring segment, the bottom ring segment and the second side ring segment. The first electrode is arranged on the outer surface of the wearable structure in an area corresponding to the first ring segment; the second electrode is arranged on the inner surface of the wearable structure in an area corresponding to the second ring segment.

[0031] In this embodiment, the first ring segment and the second ring segment are distributed in the first side ring segment, the bottom ring segment and the second side ring segment, so the first ring segment and the second ring segment occupy about three quarters of the ring structure of the wearable structure. It can be seen that the first ring segment and the second ring segment are relatively large, and accordingly, the area of ​​the first electrode located in the area corresponding to the first ring segment on the outer surface of the wearable structure is relatively large, and the area of ​​the second electrode located in the area corresponding to the second ring segment on the inner surface of the wearable structure is relatively large, which makes the area of ​​the first electrode and the second electrode in contact with the human body relatively large. It should be noted that the larger the area of ​​contact between the electrode and the human body, the lower the impedance of the signal transmission channel established between the human body, the lower the transmission loss, and the better the transmission quality of the communication signal. Therefore, in this embodiment, by setting the first electrode in the area corresponding to the first ring segment on the outer surface of the wearable structure, and setting the second electrode in the area corresponding to the second ring segment on the inner surface of the wearable structure, the impedance of the signal transmission channel can be reduced, thereby reducing the transmission loss and improving the transmission quality of the communication signal.

[0032] In some other optional embodiments, the wearable structure includes a third ring segment and a fourth ring segment. The third ring segment is distributed on the first side of the reference line, and the fourth ring segment is distributed on the second side of the reference line; the reference line passes through the center of the wearable device and the geometric center of the top ring segment. Wherein, the first electrode is arranged on the outer surface of the wearable structure in an area corresponding to the third ring segment; the second electrode is arranged on the outer surface of the wearable structure in an area corresponding to the fourth ring segment. In this embodiment, the third ring segment is distributed on the first side ring segment, and the fourth ring segment is distributed on the second side ring segment. Since the first side ring segment and the second side ring segment are opposite, this makes the third ring segment and the fourth ring segment on opposite sides of the wearable structure.

[0033] On the one hand, in the current coupling HBC communication mode, taking the first electrode as the positive signal electrode and the second electrode as the negative signal electrode as an example, the current starts from the first electrode and returns to the second electrode. Since it is impossible to directly pass through the ring body of the wearable finger ring from the first electrode located on one side outer surface to the second electrode on the other side outer surface, the current needs to start from the position of the first electrode on the one side outer surface and flow along the human body path bypassing the ring body of the wearable structure to the position of the second electrode on the other side outer surface. Compared with the scheme in which the first electrode and the second electrode are both located on the inner surface of the same position of the wearable structure (that is, the first electrode is located in the area of ​​the inner surface of the wearable structure corresponding to the third ring segment, and the second electrode is located in the area of ​​the inner surface of the wearable structure corresponding to the fourth ring segment), in the scheme in which the first electrode and the second electrode are both located on the inner surface of the same position of the wearable structure, there is no ring body of the wearable structure between the first electrode and the second electrode, and the current can flow directly from the position of the first electrode on the inner surface to the position of the second electrode also located on the inner surface without bypassing the ring body of the wearable structure. Obviously, in this wearable device, since the two electrodes are located on the outer surface of the wearable structure, the current return needs to bypass the ring body of the wearable structure, which makes the return path between the first electrode and the second electrode longer, the isolation between the first electrode and the second electrode is better, the transmission loss is reduced, and the communication quality is improved.

[0034] On the other hand, compared with the solution in which the third ring segment and the fourth ring segment are on the same side of the wearable structure, it is obvious that the third ring segment and the fourth ring segment are on opposite sides of the wearable structure, so that the distance between the third ring segment and the fourth ring segment is larger, which makes the distance between the first electrode arranged in the area of ​​the outer surface of the wearable structure corresponding to the third ring segment and the second electrode arranged in the area of ​​the outer surface of the wearable structure corresponding to the fourth ring segment larger, which makes the return path between the first electrode and the second electrode longer, the isolation between the first electrode and the second electrode better, the transmission loss is reduced, and the communication quality is improved.

[0035] Optionally, the third ring segment is distributed on the first side ring segment and the first bottom ring segment, and the fourth ring segment is distributed on the second side ring segment and the second bottom ring segment; wherein the first bottom ring segment is the portion of the bottom ring segment located on the first side of the reference line; and the second bottom ring segment is the portion of the bottom ring segment located on the second side of the reference line.

[0036] In this case, the third and fourth ring segments occupy about half of the ring structure of the wearable structure. It can be seen that the third and fourth ring segments are larger, which can reduce the impedance of the signal transmission channel, thereby reducing transmission loss and improving the transmission quality of communication signals.

[0037] Optionally, the third electrode is disposed on an outer surface of the wearable structure in an area corresponding to the top ring segment, or is disposed on an inner surface of the wearable structure in an area corresponding to the top ring segment.

[0038] When the wearable device is in a worn state, the area of ​​the outer surface of the wearable structure corresponding to the top ring segment does not contact or approach the human body. Based on this, the third electrode is arranged in the area of ​​the outer surface of the wearable structure corresponding to the top ring segment, which can achieve the purpose of not contacting or approaching the human body in the worn state. The interior of the wearable structure itself will not contact or approach the human body. Therefore, the third electrode is arranged in the area of ​​the inner part of the wearable structure corresponding to the top ring segment, which can also achieve the purpose of not contacting or approaching the human body in the worn state. In this case, based on the aforementioned embodiment in which the first electrode and the second electrode are distributed in the ring segment of the wearable structure, the third electrode is arranged in the top ring segment, so that the spacing between the third electrode and the first electrode and the second electrode is larger. It should be noted that in the capacitive coupling HBC communication mode, the larger the spacing between the ground electrode and the signal electrode, the better the isolation, the smaller the transmission loss, and the better the transmission quality of the communication signal.

[0039] In the second aspect, the embodiment of the present application also provides another wearable device with human body communication function. The wearable device includes a wearable structure, a second electrode and a third electrode. The wearable structure is used to wear the wearable device on the wearable part of the human body so that the wearable device is in a wearable state. The second electrode is arranged on the outer surface of the wearable structure; the third electrode is arranged on the outer surface of the wearable structure or inside the wearable structure; wherein the second electrode and the third electrode are insulated. When the wearable device is in a wearable state, the second electrode is close to or in contact with the skin of the human body, and the third electrode is not in contact with or close to the human body. The second communication signal is transmitted between the wearable device and the human body via the second electrode and the third electrode, so that the wearable device is in a capacitive coupling HBC communication mode.

[0040] It should be noted that the capacitive coupling HBC communication mode requires a signal electrode to be in contact with or close to the human body, and a ground electrode that is not in contact with or close to the human body. The above-mentioned second electrode is used as a signal electrode, and the above-mentioned third electrode is used as a ground electrode. It should be understood that in the worn state, the inner surface of the wearable structure is always in contact with or close to the wearing part, so the third electrode is not suitable for being set on the inner surface. In the above embodiment, the third electrode is set on the outer surface and the inside of the wearable structure. These two positions can not be in contact with or close to the human body, so that the above-mentioned third electrode meets the requirements of the ground electrode and can be used as a ground electrode. In the worn state, the outer surface of the wearable structure can be in contact with or close to the wearing part. Therefore, in the above embodiment, the second electrode is set on the outer surface of the wearable structure and can be in contact with or close to the human body, so that the above-mentioned second electrode meets the requirements of the signal electrode and can be used as a signal electrode.

[0041] Of course, the second electrode can also be arranged on the inner surface of the wearable structure. However, in this case, the second electrode is always in contact with or close to the human body. For a wearable structure that can only maintain a loop state, the inner surface of the wearable structure is on an inner wall surface that is not easy to operate, and the processing is difficult. The second electrode is arranged on the outer surface of the wearable structure, and it can be processed directly from the outside, which is easy to process.

[0042] Optionally, the wearable structure includes at least a first wearable structure; the outer surface of the first wearable structure is used as the outer surface of the wearable structure; and the material of the first wearable structure is a conductive material or a non-conductive material.

[0043] In some embodiments, the material of the first wearable structure is a conductive material, and the second electrode and the third electrode are both arranged on the outer surface of the first wearable structure, and the position of the first wearable structure between the second electrode and the third electrode has a gap to achieve insulation between the second electrode and the third electrode.

[0044] Optionally, the gap is filled with an insulator.

[0045] In some designs, the first wearable structure has a ring segment; when the first wearable structure is made of a conductive material and the second electrode is disposed on the outer surface of the wearable structure, the second electrode is located in the ring segment of the first wearable structure; when the first wearable structure is made of a conductive material and the second electrode and the third electrode are both disposed on the outer surface of the wearable structure, the second electrode and the third electrode are both located in the ring segment of the first wearable structure. In this way, the first wearable structure can be reused and costs can be saved. The specific reasons can be referred to the contents described in the above corresponding embodiments.

[0046] In some examples of the present application, the wearable structure includes a top ring segment, a bottom ring segment, a first side ring segment and a second side ring segment; the top ring segment is opposite to the bottom ring segment, the first side ring segment is one of the ring segments located between the top ring segment and the bottom ring segment, and the second side ring segment is another ring segment between the top ring segment and the bottom ring segment; the wearable structure has identification information, and the identification information is used to identify one or more of the top ring segment, the bottom ring segment, the first side ring segment and the second side ring segment to indicate the orientation of the wearable device in a worn state, so that the area of ​​the outer surface of the wearable structure corresponding to the top ring segment can not contact or approach the skin of the human body.

[0047] Exemplarily, the wearable device is a wearable ring; the identification information includes a boss shape, and the boss shape is used to identify the top ring segment so that the top ring segment is placed on the side facing the back of the wearing finger when worn.

[0048] Optionally, the wearable structure includes a second ring segment and a fifth ring segment; the second ring segment is distributed in the first side ring segment, the bottom ring segment and the second side ring segment; the fifth ring segment is distributed in the top ring segment; wherein the second electrode is arranged on the outer surface of the wearable structure in an area corresponding to the second ring segment, and the third electrode is arranged on the outer surface of the wearable structure or inside the wearable structure in an area corresponding to the fifth ring segment.

[0049] In this embodiment, the setting position of the third electrode avoids the setting position of the second electrode. In this way, coupling is not easy to occur between the third electrode and the second electrode, the isolation is better, the transmission loss is smaller, and the transmission quality of the communication signal is better. In addition, the second ring segment accounts for about three quarters of the ring structure of the wearable structure. It can be seen that the second ring segment is larger, and accordingly, the area of ​​the second electrode located in the area corresponding to the second ring segment on the outer surface or inner surface of the wearable structure is larger, which makes the area of ​​the second electrode in contact with the human body larger. It should be noted that the larger the area of ​​contact between the electrode and the human body, the lower the impedance of the signal transmission channel established between the human body, the lower the transmission loss, and the better the transmission quality of the communication signal. Therefore, in this embodiment, by setting the second electrode in the area corresponding to the second ring segment on the outer surface of the wearable structure, the impedance of the signal transmission channel can be reduced, thereby reducing the transmission loss and improving the transmission quality of the communication signal.

[0050] Exemplarily, the wearable device in the first aspect and the second aspect may be a wearable bracelet, a wearable watch, or a wearable ring.

[0051] It can be understood that the beneficial effects that can be achieved by the wearable device in any possible design method of the second aspect provided above can be referred to the beneficial effects of the wearable device in the first aspect and any possible design method thereof, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of the structure of a human body communication system provided in an embodiment of the present application;

[0053] Figure 2 A principle block diagram of a current-coupled HBC system provided in an embodiment of the present application;

[0054] Figure 3 A functional block diagram of a capacitive coupling HBC system provided in an embodiment of the present application;

[0055] Figure 4 A schematic diagram of a three-dimensional structure of a wearable ring provided in an embodiment of the present application;

[0056] Figure 5 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 1 ;

[0057] Figure 6 Four plan view schematic diagrams of the electrode B provided in the embodiments of the present application;

[0058] Figure 7 Schematic diagram of the planar structure of the wearable ring provided in the embodiment of the present application Figure 2 ;

[0059] Figure 8 A comparative schematic diagram of the return path of the current-coupled HBC provided in an embodiment of the present application;

[0060] Fig. 9 A schematic diagram of the relationship between the loss of a current-coupled HBC and the length of the return path between the positive and negative signal electrodes provided in an embodiment of the present application;

[0061] Fig.10 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 3 ;

[0062] Fig.11 A schematic diagram of a ring structure provided in an embodiment of the present application;

[0063] Fig.12 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 4 ;

[0064] Fig.13 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 5 ;

[0065] Fig.14 for Fig.13 The circuit schematic diagram of the wearable ring shown;

[0066] Fig.15 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 6 ;

[0067] Fig.16 A schematic diagram of the three-dimensional structure of another wearable ring provided in an embodiment of the present application;

[0068] Fig.17 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 1 ;

[0069] Fig.18 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 2 ;

[0070] Fig.19 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 3 ;

[0071] Fig. 20 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 4 ;

[0072] Fig.21 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 5 ;

[0073] Fig. 22 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 6 . DETAILED DESCRIPTION

[0074] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0075] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. The term "electrical connection" referred to in the embodiments of the present application, that is, "electrical connection", refers to a connection method that can transmit electrical signals.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0078] In addition, the term "and / or" can be a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0079] It should be noted that in the embodiments of the present application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0080] Human body communication (HBC) is an ultra-low power communication technology that uses the human body as a signal transmission medium to transmit communication signals. Its feasibility is based on the conductivity of human biological tissue and is closely related to the electrical properties of human biological tissue. Compared with current short-range wireless communication technologies (such as Bluetooth, ZigBe, etc.), this technology has the advantages of low power consumption, anti-interference, and high speed. In terms of security, human body communication uses weak electrical signals that are far lower than the safety standards of the International Telecommunication Union, and its security has been recognized by the Institute of Electrical and Electronics Engineers (IEEE). In the IEEE 802.15.6 standard for personal area networks (PAN) officially approved by IEEE in 2012, human body communication technology was designated as an important communication method at the physical layer.

[0081] To establish an HBC connection, two or more human body communication devices are required to be in contact with or close to the human body. In this way, a signal transmission channel is established between the human body communication devices through the human body, so that the communication signal can be transmitted through the signal transmission channel. It should be noted that being close to the human body means maintaining a very small distance from the human body, and the distance is based on the current corresponding to the communication signal being able to be fed into the human body. In addition, human body communication devices can communicate in simplex or duplex mode.

[0082] For example, please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a human body communication system provided in an embodiment of the present application.

[0083] The human body communication system includes two human body communication devices (respectively a first human body communication device and a second human body communication device) and a human body. The two human body communication devices are respectively a first human body communication device and a second human body communication device. The first human body communication device and the second human body communication device are respectively in contact with the human body or close to the human body. In the figure, the close relationship between the human body communication device and the human body is indicated by a dotted line, and the contact relationship between the human body communication device and the human body is indicated by a solid line.

[0084] Taking the full-duplex mode as an example, the first human body communication device and the second human body communication device can perform two-way communication. Among them, the first human body communication device can be used as the sending end of the communication signal, the second human body communication device can be used as the receiving end of the communication signal, and the first human body communication device sends the communication signal M1 to the second human body communication device through the human body; the first human body communication device can also be used as the receiving end of the communication signal, and the second human body communication device can also be used as the sending end of the communication signal, and the first human body communication device receives the communication signal M2 from the second human body communication device through the human body. It should be understood that in other embodiments, the first human body communication device and the second human body communication device can communicate in half-duplex or simplex mode.

[0085] It should be understood that Figure 1 The human body communication system shown is only an illustration. In other embodiments, more human body communication devices and / or more human bodies may be included to form a more complex body area network with a wider coverage, which is not specifically limited in the embodiments of the present application.

[0086] It should be noted that the human body communication device specifically couples the communication signal to the human body through electrodes to achieve the transmission of the communication signal through the human body. According to the different coupling methods, HBC can be divided into two modes: current coupling HBC and capacitive coupling HBC. Figure 1 Based on the system shown, combined Figure 2 and Figure 3 The current coupling HBC and the capacitive coupling HBC are described separately. For the sake of distinction, in the embodiment of the present application, the communication signal transmitted by the current coupling HBC is referred to as the first communication signal, and the communication signal transmitted by the capacitive coupling HBC is referred to as the second communication signal.

[0087] Please refer to Figure 2 , Figure 2 A functional block diagram of a current-coupled HBC system provided in an embodiment of the present application.

[0088] Figure 2 The current coupled HBC system shown in the figure includes a transmitter, a human body and a receiver. The transmitter can be understood as Figure 1 The receiving end can be understood as one of the first human body communication device and the second human body communication device. Figure 1The first human body communication device and the other of the second human body communication device.

[0089] Among them, the transmitting end and the receiving end respectively include two electrodes (two signal electrodes), one is a positive signal electrode and the other is a negative signal electrode. The two signal electrodes at the transmitting end and the two signal electrodes at the receiving end can be in contact with the human body respectively. In the current coupling HBC, the current corresponding to the first communication signal is injected into the human body through the two signal electrodes at the transmitting end. After the current is transmitted through the human body, a potential difference is generated between the two signal electrodes at the receiving end. By detecting the potential difference between the two signal electrodes at the receiving end, the first communication signal can be obtained, thereby realizing the transmission of the first communication signal.

[0090] It can be seen that in the current-coupled HBC, the two signal electrodes at the transmitting end and the two signal electrodes at the receiving end are in contact with the human body respectively. Of course, for high-frequency current, even if the signal electrode is close to the human body, the current can be injected into the human body through the signal electrode. Among them, the meaning of close is based on the ability of the current to be injected into the human body.

[0091] It should be noted that the current-coupled HBC uses human tissue as the transmission medium to achieve differential signal transmission. In this human communication mode, the conductivity σ of human skin, fat and muscle is much greater than the product of its operating angular frequency ω and dielectric constant ε (σ>>ωε) relative to the air medium, which makes the transmission signal less susceptible to electromagnetic interference from the surrounding environment and has good confidentiality. However, due to the greater impedance of human tissue, its signal attenuation is relatively large. Based on this, the current-coupled HBC is more suitable for close-range communication in the body.

[0092] Please refer to Figure 3 , Figure 3 A functional block diagram of a capacitively coupled HBC system provided in an embodiment of the present application.

[0093] Figure 3 The capacitive coupling HBC system shown in the figure includes a transmitter, a human body and a receiver. The transmitter can be understood as Figure 1 The receiving end can be understood as one of the first human body communication device and the second human body communication device. Figure 1 The first human body communication device and the other of the second human body communication device.

[0094] Among them, the transmitting end and the receiving end respectively include two electrodes, one electrode is a signal electrode, and the other electrode is a ground electrode. The two electrodes of the transmitting end and the two electrodes of the receiving end are capacitively coupled with the human body and the ground to construct a communication loop of the first communication signal. Specifically, the signal electrodes of the transmitting end and the receiving end can achieve capacitive coupling with the human body by contacting the human body or approaching the human body. The ground electrode of the transmitting end and the ground electrode of the receiving end are not in direct contact with the human body, but are capacitively coupled with the ground of the surrounding environment (such as ceilings, walls, etc.) to form a ground loop of the second communication signal. In the capacitive coupling HBC, a current corresponding to a second communication signal is fed into the human body through the signal electrode of the transmitting end, so that the transmitting end oscillates to generate an electric field in the human body. By detecting the change of the electric field between the signal electrode and the ground electrode of the receiving end, the second communication signal can be obtained, thereby realizing the transmission of the second communication signal.

[0095] It can be seen that in the capacitive coupling HBC, the signal electrode at the transmitting end and the signal electrode at the receiving end are respectively in contact with or close to the human body; the ground electrode at the transmitting end and the ground electrode at the receiving end are not in direct contact with the human body. It should be noted that in the capacitive coupling HBC, the farther the signal electrode and the ground electrode at the transmitting end are, the better the isolation. In this way, most of the energy output by the signal electrode at the transmitting end flows to the signal electrode at the receiving end, rather than to the ground electrode at the transmitting end, thereby reducing the transmission loss, increasing the transmission power, and improving the transmission quality of the second communication signal.

[0096] Different from the current coupling HBC, in the capacitive coupling HBC, the ground electrode at the transmitting end is not in direct contact with the human body, and the coupling loop between it and the signal electrode is relatively weak, so its signal attenuation (i.e. signal loss) is relatively small. However, since the communication loop of the capacitive coupling HBC exists in the air, the communication signal is transmitted on the surface of the human body and cannot extend into the human tissue. The human posture and the surrounding electromagnetic environment are prone to interfere with the signal, making detection more difficult. Based on this, the capacitive coupling HBC is more suitable for low-power long-distance communication on the surface of the body.

[0097] The embodiment of the present application provides a wearable device with a human body communication function, and the arrangement of electrodes in the wearable device is optimized. It should be noted that the wearable device can be an electronic device configured as a ring structure when worn, such as a wearable watch, a wearable bracelet, or a wearable finger ring.

[0098] It should be understood that the wearable device can be understood as Figure 1 The first human body communication device shown can also be understood as Figure 1 The second human body communication device shown. Figure 1In the example of , the first human body communication device and the second human body communication device communicate in full-duplex mode, so the wearable device is a duplex device including a transmitter and a receiver. It should be understood that in other embodiments, the wearable device may also be a simplex device including only a transmitter or a receiver.

[0099] In order to better understand the wearable device provided by the embodiment of the present application, the wearable device provided by the embodiment of the present application is exemplarily described below using a wearable ring as an example.

[0100] For example, please refer to Figure 4 , Figure 4 A schematic diagram of the three-dimensional structure of a wearable ring provided in an embodiment of the present application.

[0101] The wearable ring 100 includes a wearing structure 101, which is made of a non-conductive material, such as a non-metallic material. The wearing structure 101 is a structure for wearing the wearable ring 100 on a wearing part of a human body. For the wearable ring 100, the wearing part of a human body is a finger on which the wearable ring 100 is worn. In the embodiment of the present application, the finger on which the wearable ring 100 is worn is referred to as a wearing finger, and the finger adjacent to the wearing finger is referred to as an adjacent finger.

[0102] The wearable structure 101 is constructed as an annular structure having a through hole 102, so that the user's finger can pass through the through hole 102, so that the wearable ring 100 is worn on the wearing finger, so that the wearable ring 100 is in a wearing state. It should be noted that the annular structure refers to a structure obtained by extending an outer edge with a predetermined shape inward by a predetermined distance to form an inner edge of the same shape or a different shape. The annular structure does not specifically refer to a circular ring structure, and can also be an annular structure in an elliptical shape, an inner circle and an outer square shape, etc., as long as the wearable ring 100 can be worn on the wearing finger without falling off.

[0103] The wearable structure 101 includes an inner surface 100a and an outer surface 100b. The so-called surface refers to the part of an object that can contact the outside world. The inner surface 100a of the wearable structure 101 is the side of the wearable ring 100 that contacts the wearing finger when worn. The outer surface 100b of the wearable structure 101 is the other surface opposite to the inner surface 100a of the wearable structure 101, that is, the side of the wearable ring 100 that does not contact the wearing part of the human body when worn. In the embodiment of the present application, the distribution direction of the inner surface 100a and the outer surface 100b of the wearable structure 101 is referred to as a first direction. It should be understood that the wearable structure 101, in addition to the inner surface 100a and the outer surface 100b, also has a side surface 100c located between the inner surface 100a and the outer surface 100b of the wearable structure 101.

[0104] For ease of explanation, Figure 4 An O-XYZ coordinate system is established in . Among them, point O is the origin of the coordinates, which can be understood as the center of the wearable ring 100 (that is, the geometric center of the wearable ring 100), and the X-axis, Y-axis, and Z-axis are perpendicular to each other. The direction of the Z-axis can be understood as the wearing direction of the wearable ring 100, and can also be understood as the extension direction of the through hole 102 of the wearable ring 100; the XOY plane is perpendicular to the Z-axis. It should be understood that when the through hole 102 of the wearable ring 100 is a circular through hole, the direction of the Z-axis is the axial direction of the through hole 102, and the XOY plane is the radial plane of the through hole 102. In this case, the first direction in which the inner surface 100a and the outer surface 100b are distributed can be understood as the radial direction of the through hole 102.

[0105] In some embodiments, the wearable ring 100 may have the function of detecting human physiological data. For example, the wearable ring 100 may be integrated with a sensor to detect human physiological data. For example, the wearable ring 100 may be integrated with a blood oxygen sensor, a heart rate sensor, or the like. In this case, the communication signal transmitted between the wearable ring 100 and other human communication devices may be, but is not limited to, the human physiological data detected by the wearable ring 100.

[0106] Please refer to Figure 5 , Figure 5 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 1 . Figure 5 It can be understood as the XOY plane Figure 4 The wearable ring 100 shown is a cross-sectional view obtained by cutting.

[0107] Figure 5 In the embodiment, the wearable structure 101 includes a soft shell 110 and a hard shell 120 .

[0108] Among them, the soft shell 110 is a shell that directly contacts the wearing finger of the wearable ring 100 when the wearable ring 100 is worn, and is constructed as a ring structure with the through hole 102, so that the user can wear the wearable ring 100 on the wearing finger. The soft shell 110, as the name implies, is constructed as a soft structure to be suitable for wearing on human fingers, thereby improving the wearing comfort of the wearable ring 100. The soft shell 110 can be made of flexible materials such as silicone, in which case the soft shell 110 is non-conductive.

[0109] The hard shell 120 (i.e., the first wearing structure) is a shell that does not contact the wearing finger of the wearable ring 100 when it is worn. The hard shell 120 is sleeved on the outside of the soft shell 110, and the outside refers to the side that is farther away from the point O. Specifically, the soft shell 110 and the hard shell 120 both include an inner surface and an outer surface distributed along the first direction, the first surface of the soft shell 110 and the outer surface of the hard shell 120 are farther away from the point O of the wearable ring 100, and the inner surface of the hard shell 120 and the outer surface of the soft shell 110 fit together. In this case, the inner surface of the soft shell 110 is used as the inner surface 100a of the wearing structure 101; the outer surface of the hard shell 120 is used as the outer surface 100b of the wearing structure 101.

[0110] The hard shell 120, as the name implies, is constructed as a hard structure to improve the impact resistance of the wearable ring 100, and can resist damage to the electronic components of the wearable ring 100 (such as the circuit structure 130 and the battery 140) caused by external impacts. Figure 5 The hard shell 120 is a non-conductive shell made of a non-conductive material, such as a non-metallic shell made of a non-metallic material. Of course, in other embodiments, the wearable finger ring 100 can also be a conductive shell made of a conductive material, such as a metal shell made of a metal material, which will be described in detail in the following embodiments.

[0111] Please continue to refer to Figure 5 The wearable ring 100 also includes a circuit structure 130, a battery 140 and two electrodes, namely electrode A (ie, a first electrode) and electrode B (ie, a second electrode).

[0112] The battery 140 is used to supply power to the components in the wearable ring 100 that require power.

[0113] The circuit structure 130 can be used to generate a communication signal to be sent, and / or to detect a received communication signal. Specifically, for the case where the wearable ring 100 is a simplex device, the circuit structure 130 includes a transmitter for generating a communication signal to be sent or a receiver for detecting a received communication signal. For the case where the wearable ring 100 is a duplex device, the circuit structure 130 includes both a transmitter and a receiver. Of course, the function of the circuit structure 130 is not limited to the above-mentioned transmitter and receiver, and can also be used to realize other functions of the wearable ring 100. In the specific implementation process, the circuit structure 130 can be expressed in the form of a circuit board.

[0114] Figure 5In the wearable ring 100 shown, the circuit structure 130 and the battery 140 are located inside the wearable structure 101. For example, the hard shell 120 can be constructed as a hollow cavity, and the circuit structure 130 and the battery 140 are accommodated in the cavity of the cavity, so that the circuit structure 130 and the battery 140 are located inside the wearable structure 101. Of course, in other embodiments, the circuit structure 130 and the battery 140 can also be set at other positions inside the wearable structure 101, so as to hide the circuit structure 130 and the battery 140 inside the wearable structure 101.

[0115] Electrode A and electrode B are electrically connected to the circuit structure 130, respectively. In this way, the communication signal can be transmitted between the circuit structure 130 and the human body through the electrode A and the electrode B, that is, the electrode A and the electrode B can transmit the communication signal generated by the transmitter of the circuit structure 130 to the human body to realize the transmission of the communication signal; and / or, transmit the communication signal from the human body to the receiver of the circuit structure 130 to realize the reception of the communication signal.

[0116] Specifically, in the case where the wearable ring 100 is a simplex device, if the circuit structure 130 includes a transmitter, the electrodes A and B can transmit the communication signal generated by the transmitter of the circuit structure 130 to the human body to achieve the transmission of the communication signal; if the circuit structure 130 includes a receiver, the electrodes A and B can transmit the communication signal from the human body to the receiver of the circuit structure 130 to achieve the reception of the communication signal. In the case where the wearable ring 100 is a duplex device, the circuit structure 130 includes a transmitter and a receiver, then the electrodes A and B can transmit the communication signal generated by the transmitter of the circuit structure 130 to the human body to achieve the transmission of the communication signal, and can also transmit the communication signal from the human body to the receiver of the circuit structure 130 to achieve the reception of the communication signal.

[0117] During the specific implementation process, the electrical connection between the electrode A, the electrode B and the circuit structure 130 can be achieved by means of spring pieces, conductive cloth, conductive glue or welding metal wires.

[0118] Figure 5 In the wearable ring 100 shown, when the wearable ring 100 is in a worn state, electrode A can be close to the human body or in contact with the human body, and electrode B can be close to the human body or in contact with the human body. The above content has explained the meaning of being close to the human body. It should be noted that compared with being in contact with the human body, the electrode close to the human body will cause greater loss of the communication signal. Therefore, in the specific implementation process, the electrode is in contact with the human body as much as possible.

[0119] In order to achieve proximity to or contact with a human body, optionally, Figure 5In the wearable ring 100 shown, the electrode A is attached to the area of ​​the outer surface of the hard shell 120 corresponding to the first ring segment L1, that is, it is set in the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the first ring segment L1. The electrode B is attached to the area of ​​the inner surface of the soft shell 110 corresponding to the second ring segment L2, that is, it is set in the area of ​​the inner surface 100a of the wearable structure 101 corresponding to the second ring segment L2.

[0120] In specific implementation, electrode A and electrode B may be a coating structure formed by electroplating or any other process, and the material used for the coating may be any conductive material such as copper, silver chloride, etc. Of course, in other embodiments, electrode A may also be an arc-shaped electrode sheet structure adapted to the outer surface of the hard shell 120; electrode B may also be an arc-shaped electrode sheet structure adapted to the inner surface of the soft shell 110. Electrode A and electrode B may be separated by the non-conductive soft shell 110, thereby achieving insulation between electrode A and electrode B. Of course, in other embodiments, other structures may also be provided for insulation.

[0121] It should be noted that the area of ​​the outer surface of the hard shell 120 corresponding to a certain ring segment can also be regarded as the outer surface of the ring segment, and the area of ​​the inner surface of the soft shell 110 corresponding to a certain ring segment can also be regarded as the inner surface of the ring segment. For example, the area of ​​the outer surface of the hard shell 120 corresponding to the first ring segment L1 can also be regarded as the outer surface of the first ring segment L1, and the area of ​​the inner surface of the soft shell 110 corresponding to the second ring segment L2 can also be regarded as the inner surface of the second ring segment L2. In this case, the electrode A is attached to the outer surface of the first ring segment L1, and the electrode B is attached to the inner surface of the second ring segment L2.

[0122] When the wearable finger ring 100 is in the wearing state, the outer surface of the first ring segment L1 can contact the adjacent finger; the inner surface of the second ring segment L2 can contact the wearing finger. In this case, the electrode A mounted on the outer surface of the first ring segment L1 can contact the adjacent finger, and the electrode B mounted on the inner surface of the second ring segment L2 can contact the wearing finger.

[0123] It should be noted that in the embodiments of the present application, the ring segment refers to a section of the structure distributed along the annular direction on the annular structure, which can be understood as: the annular structure is intercepted by two intersecting planes along the radial direction of the annular structure, and the obtained annular structure is located between the two intersecting planes. Figure 5 In the wearable ring 100 shown, the wearing structure 101 includes a top ring segment L 顶 , bottom ring segment L 底 , first side ring segment L 侧1 and the second side ring segment L 侧2 .

[0124] Among them, the bottom ring segment L 底With top ring segment L 顶 In contrast, the first side ring segment L 侧1 The top ring segment L 顶 and bottom ring segment L 底 One of the ring segments between the second side ring segment L 侧2 For the top ring segment and the bottom ring segment L 底 The wearable structure 101 is provided with identification information for identifying the top ring segment L 顶 , bottom ring segment L 底 , first side ring segment L 侧1 and the second side ring segment L 侧2 One or more of the above to indicate the orientation of the wearable finger ring 100 in the wearing state, so that the outer surface 100b of the wearing structure 101 corresponds to the top ring segment L 顶 The area (i.e. the top ring segment L 顶 Thus, when the user wears the wearable ring 100 on the wear finger, under the guidance of the identification information, the ring segment with the identification information can be placed in the corresponding position, so that the top ring segment L 顶 The outer surface of the top ring segment L can avoid contact with the human body. 顶 When the wearable finger ring 100 is in the wearing state, one of the ring segments of the wearing structure 101 whose outer surface is not in contact with the human body.

[0125] For the wearable ring 100, when the wearable ring 100 is in the wearing state, the outer surface of the ring segment on the side facing the back of the wearing finger and the ring segment on the side facing the finger pulp can not contact the human body. In the embodiment of the present application, the ring segment on the side facing the back of the wearing finger is the top ring segment L. 顶 For example, in this case, the ring segment placed on the side toward which the fingertip of the wearing finger faces is the bottom ring segment L. 底 The ring segment on the side facing the first side of the wearing finger is the first side ring segment L 侧1 The ring segment on the side facing the second side of the wearing finger is the second side ring segment L 侧2 The back and the finger pulp of the wearing finger are bounded by not being in contact with the adjacent fingers. The back of the finger refers to the finger surface on the same side as the back of the hand; the finger pulp refers to the finger surface on the same side as the palm. The first side of the wearing finger is bounded by being in contact with the first adjacent finger, and the second side of the wearing finger is bounded by being in contact with the second adjacent finger.

[0126] It should be understood that the top ring segment L 顶 The side to which the outer surface of the top ring segment L faces has no adjacent fingers and can avoid contact with the human body; 顶The inner surface of the wearer's finger can be in contact with the back of the finger; the bottom ring segment L 底 The side to which the outer surface of the bottom ring segment L faces has no adjacent fingers and can avoid contact with the human body; 底 The inner surface of the first side ring segment L can contact the fingertip of the wearer; 侧1 The outer surface of the first side ring segment L can contact the first adjacent finger; 侧1 The inner surface of the second side ring segment L can contact the first side of the wearing finger; 侧2 The outer surface of the second side ring segment L can contact the second adjacent finger; 侧2 The inner surface of the wearer's finger can be in contact with the second side of the wearer's finger.

[0127] It should be noted that the top ring segment L 顶 , bottom ring segment L 底 , first side ring segment L 侧1 and the second side ring segment L 侧2 The specific size of the top ring segment L is not specifically limited. 顶 , bottom ring segment L 底 , first side ring segment L 侧1 and the second side ring segment L 侧2 The specific size of can be set according to the contact position with the back of the wearing finger, the finger pulp, the first adjacent finger, and the second adjacent finger in the wearing state. In addition, in the actual implementation process, considering that the wearable ring 100 rotates when worn, the ring segments are placed in inappropriate positions, such as the top ring segment L 顶 The ring is rotated to the first side of the finger so that its outer surface contacts the adjacent finger, so the size of each ring segment can have a certain margin. 顶 It can be further reduced based on the ring segment divided by the back of the wearing finger.

[0128] In order to indicate the orientation of the wearable finger ring 100 in the wearing state, optionally, Figure 5 The marking information shown is a boss shape, used to identify the top ring segment L 顶 , so that the top ring segment L 顶 When worn, it is placed on the side toward which the back of the finger of the wearer is facing. Obviously, in this case, the ring segment occupied by the boss shape is the top ring segment L 顶 .

[0129] It should be noted that Figure 5 The boss shape shown in the figure refers to a part of the outer surface 100b of the wearable ring 100 being raised, so that the part is higher than other areas. Due to the special structure of the boss shape, when the user wears the wearable ring 100, the ring segment occupied by the boss shape (i.e., the top ring segment L) is naturally raised.顶 ) is placed on the side facing the back of the wearing finger. According to the above content, the top ring segment L 顶 The outer surface of the top ring segment L can not contact the human body, so the boss shape can be used as identification information to achieve 顶 The outer surface of the wearable ring 100 does not contact the human body when the wearable ring 100 is in the wearing state, so as to play its indicating role. In addition, due to the special structure of the boss shape, when the wearable ring 100 is in the wearing state, it can effectively prevent the wearable ring 100 from rotating on the finger and causing the ring segments to be placed in inappropriate positions.

[0130] Of course, in other embodiments, the top ring segment L is used to identify 顶 The identification information may also be implemented in other ways, such as text marks or pattern marks, or may be implemented in a combination of multiple ways, such as by printing pattern marks on the surface of the boss shape. The embodiments of the present application do not make specific limitations on this.

[0131] In addition, in other embodiments, the identification information can also be used to identify other ring segments, as long as the identification information can guide the user to place the ring segment with the identification information at the corresponding position when wearing the wearable ring 100. 侧1 The outer surface and the second side ring segment L 侧2 The outer surface of the wearable ring 100 is provided with patterns to instruct the user to place the ring segments with the patterns on both sides of the wearing finger when wearing the wearable ring 100, so as to contact the first adjacent finger and the second adjacent finger. 侧1 The outer surface and the second side ring segment L 侧2 The top ring segment L between 顶 Placed on the side facing the back of the wearing finger, the top ring segment L 顶 The outer surface of the indicator can avoid contact with the human body and can also serve as an indicator.

[0132] According to the foregoing content, when the wearable ring 100 is in the worn state, the outer surface of the first ring segment L1 can contact the adjacent finger; and the inner surface of the second ring segment L2 can contact the wearing finger.

[0133] Based on this, optionally, Figure 5 In the wearable finger ring 100 shown, the first ring segment L1 can be distributed in the first side ring segment L 侧1 , bottom ring segment L 底 and the second side ring segment L 侧2 The second ring segment L2 can also be distributed in the first side ring segment L 侧1 , bottom ring segment L 底 and the second side ring segment L侧2 .

[0134] It should be noted that the first ring segment L1 is distributed in the first side ring segment L 侧1 , bottom ring segment L 底 and the second side ring segment L 侧2 It means that the first ring segment L1 occupies the first side ring segment L 侧1 , bottom ring segment L 底 and the second side ring segment L 侧2 , and the ring segment occupied by the first ring segment L1 can be the ring segment from the first side ring segment L 侧1 Through the bottom ring section L 底 To the second side ring segment L 侧2 For example, the first ring segment L1 is formed from the first side ring segment L 侧1 Close to the bottom ring segment L 底 The half of the bottom ring segment L 底 Extends to the second side ring segment L 侧2 Close to the bottom ring segment L 底 The second ring segment L2 is distributed in the first side ring segment L 侧1 , second side ring segment L 侧2 And the bottom ring segment L 底 The meaning of can refer to the first ring segment L1 distributed in the first side ring segment L 侧1 , second side ring segment L 侧2 and the bottom ring segment L 底 . Figure 5 In the embodiment, the first ring segment L1 and the second ring segment L2 are the same. In other embodiments, the first ring segment L1 and the second ring segment L2 may be different.

[0135] It should be understood that due to the first side ring segment L 侧1 The outer surface of the second side ring segment L can contact the first adjacent finger. 侧2 The outer surface of the first ring segment L1 can contact the second adjacent finger. Therefore, when the wearable ring 100 is worn, the outer surface of the first ring segment L1 can contact the first adjacent finger and the second adjacent finger. 侧1 The inner surface of the second side ring segment L can contact the first side of the wearing finger. 侧2 The inner surface of the bottom ring segment L can contact the second side of the wearing finger. 底 The inner surface of the second ring segment L2 can contact the fingertip of the wearing finger. Therefore, when the wearable ring 100 is worn, the inner surface of the second ring segment L2 can contact the fingertip of the wearing finger, the first side of the wearing finger, and the second side of the wearing finger.

[0136] Based on this, when the wearable ring 100 is in the worn state, the electrode A arranged on the outer surface of the first ring segment L1 can be close to or in contact with the first adjacent finger, or close to or in contact with the second adjacent finger; the electrode B arranged on the inner surface of the second ring segment L2 can be close to or in contact with the first side surface of the wearing finger, or close to or in contact with the second side surface of the wearing finger, or close to or in contact with the fingertip of the wearing finger, thereby achieving the purpose of electrode A and electrode B contacting or approaching the human body.

[0137] It should be noted that the sensors for monitoring human physiological data, such as the blood oxygen sensor of the wearable ring 100, may include one or more groups of light-emitting diodes and photoelectric receiving elements. When monitoring human physiological data, these sensors transmit light signals to the fingers through the light-emitting diodes, and then detect the light signals transmitted back by the fingers through the photoelectric receiving elements, thereby obtaining human physiological data. Therefore, the electrode B on the inner surface 100a needs to avoid these sensors.

[0138] For example, please refer to Figure 6 , Figure 6 Four schematic plan views of the electrode B provided in the embodiments of the present application. It should be noted that: Figure 6 Each electrode B in the figure is a flattened planar structure. In actual implementation, the electrode B is an arc-shaped non-planar structure adapted to the inner surface of the soft shell 110 .

[0139] Figure 6 Electrode B in (a) is suitable for situations where there is no need to avoid the sensor.

[0140] Figure 6 The electrode B in (b) is provided with a long strip hole. One or more groups of light emitting diodes and photoelectric receiving elements of the sensor can be arranged at positions corresponding to the long strip hole, so that the optical signal can be transmitted through the long strip hole.

[0141] Figure 6 The electrode B in (c) is provided with three circular holes, and the electrode B can be suitable for the case where there are three groups of light-emitting diodes and photoelectric receiving elements. Each group of light-emitting diodes and photoelectric receiving elements is arranged at a position corresponding to a circular hole, so that the optical signal involved in the group of light-emitting diodes and photoelectric receiving elements is transmitted through the circular hole. It should be understood that Figure 6 In (c), the number of circular holes is only a schematic illustration, and the number of circular holes may change accordingly as the number of groups of light-emitting diodes and photoelectric receiving elements provided in the sensor changes.

[0142] Figure 6The electrode B in (d) includes three sub-electrodes arranged side by side, namely, sub-electrode B1, sub-electrode B2 and sub-electrode B3, and there is a gap between sub-electrode B1 and sub-electrode B2, and between sub-electrode B2 and sub-electrode B3, and sub-electrode B1 and sub-electrode B2, and between sub-electrode B2 and sub-electrode B3 can be electrically connected through connecting wires, such as metal traces printed on a circuit board. The electrode B can be suitable for the case where there are two groups of light-emitting diodes and photoelectric receiving elements. Each group of light-emitting diodes and photoelectric receiving elements is correspondingly arranged at a position corresponding to a gap, so that the optical signal involved in the group of light-emitting diodes and photoelectric receiving elements is transmitted through the gap.

[0143] It should be understood that Figure 6 In (d), the number of sub-electrodes is only a schematic diagram. As the number of groups of light-emitting diodes and photoelectric receiving elements set in the sensor changes, the number of sub-electrodes can also change accordingly to form gaps that are the same as the number of groups of light-emitting diodes and photoelectric receiving elements.

[0144] It should be noted that Figure 6 The structural setting of the middle electrode B is only a schematic diagram. In other embodiments, the structure of the electrode B can also be other structures.

[0145] According to the aforementioned Figure 2 It can be seen from the relevant content that the current coupling HBC communication mode requires two signal electrodes for being close to or in contact with the human body. It can be seen that the electrode A and the electrode B meet the requirements of the current coupling HBC communication mode for two signal electrodes and can be used as two signal electrodes of the current coupling HBC communication mode, so that the wearable finger ring 100 can be in the current coupling HBC communication mode.

[0146] Among them, electrode A can be a positive signal electrode, and electrode B can be a negative signal electrode, or vice versa. When the wearable finger ring 100 is in a wearing state, electrode A is close to or in contact with an adjacent finger, and electrode B is also close to or in contact with the wearing finger. The first communication signal is transmitted between the wearable finger ring 100 and the human body through electrode A and electrode B, thereby realizing the current coupling HBC of the first communication signal. Specifically, when it is necessary to send the first communication signal, the current corresponding to the first communication signal from the circuit structure 130 is fed into the adjacent finger and the wearing finger through electrode A and electrode B, respectively. In this way, the first communication signal is transmitted to the human body through electrode A and electrode B, thereby realizing the sending of the first communication signal. When it is necessary to receive the first communication signal, the current corresponding to the first communication signal from the human body is transmitted to electrode A and electrode B through the adjacent finger and the wearing finger, respectively, and a potential difference is generated between electrode A and electrode B. By detecting the potential difference between electrode A and electrode B, the reception of the first communication signal is realized.

[0147] In some embodiments, the circuit structure 130 can be used to select one of the electrode A and the electrode B as the positive signal electrode of the current-coupled HBC communication mode, so that the other of the electrode A and the electrode B is the negative signal electrode of the current-coupled HBC communication mode. The subsequent embodiments have relevant introductions to this part of the content, which can be referred to for implementation, and will not be described in detail here. It should be understood that due to various factors such as wearing posture, the transmission quality of the same electrode used as a positive signal electrode at different time points is different. Therefore, in this embodiment, the circuit structure 130 can be used to select electrode A or electrode B as the positive signal electrode of the current-coupled HBC communication mode, and the switching of the positive signal electrode of the current-coupled HBC communication mode can be realized, so that an electrode with better transmission quality can be selected from electrode A and electrode B as the positive signal electrode of the current-coupled HBC communication mode to improve the communication quality.

[0148] As can be seen from the above, Figure 5 In the wearable ring 100 shown, electrode A is arranged on the outer surface 100b of the wearable structure 101, and electrode B is arranged on the inner surface 100a of the wearable structure 101. In the current coupling HBC communication mode, taking electrode A as the positive signal electrode and electrode B as the negative signal electrode as an example, the current starts from the positive signal electrode and flows back to the negative signal electrode. Since it is impossible to directly pass through the ring body of the wearable structure 101 from the electrode A located on the outer surface 100b to the electrode B located on the inner surface 100a, the current needs to start from the position where electrode A is located on the outer surface 100b of the wearable structure 101, and flow along the human body path bypassing the wearable structure 101 to the position where electrode B is located on the inner surface 100a of the wearable structure 101. Compared with the solution in which both electrode A and electrode B are located at the same position on the inner surface 100a, the solution in which both electrode A and electrode B are located on the inner surface 100a of the wearable structure 101, since both electrode A and electrode B are located on the inner surface 100a, the current can flow directly from the position where electrode A is located on the inner surface 100a to the position where electrode B is located on the inner surface 100a, without bypassing the wearable ring 100. Obviously, Figure 5 In the wearable finger ring 100 shown, since one electrode is located on the outer surface 100b and the other electrode is located on the inner surface 100a, the current return needs to bypass the wearable finger ring 100, which makes the return path between electrode A and electrode B longer, the isolation between electrode A and electrode B is better, and the transmission loss is reduced.

[0149] Please combine Figure 8 , Figure 8 for Figure 5 A schematic diagram of the wearing state of the wearable ring. Figure 8In the embodiment, the wearable ring 100 is worn on the middle finger of the left hand, that is, the wearing finger is the middle finger. The adjacent fingers of the middle finger include the ring finger and the index finger, and the ring finger is taken as the first adjacent finger and the index finger is taken as the second adjacent finger for explanation.

[0150] It should be noted that when there are multiple return paths for current, the shortest return path plays a decisive role in transmission. Figure 8 Each return path is the shortest path among the multiple return paths existing in each wearable ring 100.

[0151] The return path S2 in the figure is Figure 5 As shown in the return path of the wearable ring 100, it can be seen that the return path S2 starts from the position where the electrode A contacts the ring finger, goes along the left edge of the gap between the ring finger and the middle finger to the gap between the ring finger and the middle finger, bypasses the gap between the ring finger and the middle finger, and then extends to the position where the electrode B contacts the middle finger.

[0152] The return path S1 in the figure is Figure 7 The return path of the wearable finger ring 100 shown in FIG. Wherein, the electrode A is provided with the first side ring segment L 侧1 The inner surface of the electrode B is arranged on the second side ring segment L 侧2 The inner surface of the return path S1. It can be seen from the return path S1 that the return path S1 starts from the position where the electrode A contacts the first side of the middle finger, crosses the middle finger, and ends at the position where the electrode B contacts the second side of the middle finger. Obviously, the return path S2 is longer than the return path S1. It should be noted that Figure 7 In the scheme where electrode A and electrode B are both located on the inner surface 100a, the scheme with the largest spacing distance is electrode A and electrode B. It should be understood that when the return path S2 is longer than the return path S1 of the scheme with the largest spacing distance, it is naturally longer than the return path of other schemes with smaller spacing distances.

[0153] Combination Fig. 9 , Fig. 9 A schematic diagram of the relationship between the loss of a current-coupled HBC and the length of the return path between the positive and negative signal electrodes provided in an embodiment of the present application. Fig. 9 It can be seen that as the return path length d between the positive and negative signal electrodes (i.e., the positive signal electrode and the negative signal electrode) becomes longer, the loss of the current coupling HBC becomes smaller. Figure 5 The return path between the electrode A and the electrode B in the wearable finger ring 100 is longer and the transmission loss is lower.

[0154] In addition, compared with the solution of setting both electrode A and electrode B on the inner surface 100a, Figure 5In the wearable ring 100 shown, since the electrodes A and B are separately arranged on the outer surface 100b and the inner surface 100a of the wearable ring 100, there is enough surface area to lay the electrodes A and B, and the electrodes A and B do not need to share a surface, so the outer surface area of ​​the electrodes A and B can be made large. Figure 5 In the wearable finger ring 100 shown, the outer surface of electrode A can support being close to or in contact with two adjacent fingers; the outer surface of electrode B can be close to or in contact with the first side, the second side and the fingertip of the wearing finger. It should be noted that the larger the area of ​​the outer surface of electrode A and electrode B, the lower the impedance of the established signal transmission channel, the lower the transmission loss, and the better the transmission quality of the communication signal. In addition, the larger the area of ​​the outer surface of electrode A and electrode B, the larger the area that can be in contact with the human body. In this case, even if the wearable finger ring 100 rotates, it is easy to contact with a person, thereby realizing the establishment of a signal transmission channel.

[0155] It should be noted that Figure 5 The wearable finger ring 100 shown in the figure has a first ring segment L1 and a second ring segment L2 distributed on a first side ring segment L 侧1 , bottom ring segment L 底 and the second side ring segment L 侧2 This is explained as an example. Figure 5 The wearable ring 100 shown can be worn on any finger, and both electrodes A and B can be brought close to or in contact with the human body, thereby achieving current coupling HBC of the first communication signal. When the wearable ring 100 is worn on the thumb, considering that the thumb is often separated from the index finger and the electrode A cannot contact or approach the index finger (the adjacent finger of the thumb), the user can be prompted to bring the thumb and index finger together when the first communication signal needs to be transmitted, or the user can be prompted to wear the wearable ring 100 on other fingers other than the thumb.

[0156] It should be understood that in other embodiments, when the wearable finger ring 100 is in the wearing state, the first ring segment L1 may also be distributed at other positions that can contact with adjacent fingers, and the second ring segment L2 may also be distributed at other positions that can contact with the wearing finger. 侧1 and the second side ring segment L 侧2 Any one or two adjacent ones; the second ring segment L2 is distributed in the first side ring segment L 侧1 , bottom ring segment L 底 and the second side ring segment L 侧2 Any one of them or two adjacent ones, which is not limited in the present embodiment. Figure 5In the illustrated embodiment, the first ring segment L1 and the second ring segment L2 occupy almost three quarters of the ring structure of the wearable finger ring 100. It can be seen that the first ring segment L1 and the second ring segment L2 are larger, and accordingly, the area of ​​the electrode A arranged on the outer surface of the first ring segment L1 is larger, and the area of ​​the electrode B arranged on the inner surface of the second ring segment L2 is larger, and the area of ​​the electrode A and the electrode B in contact with the human body is larger. It should be noted that the larger the area of ​​contact between the electrode and the human body, the lower the impedance of the signal transmission channel established between the electrode and the human body, the lower the transmission loss, and the better the transmission quality of the communication signal. Therefore, this embodiment can reduce the impedance of the signal transmission channel, thereby reducing the transmission loss and improving the transmission quality of the communication signal.

[0157] For example, please refer to Fig.10 , Fig.10 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 3 . Fig.10 It can be understood that along the XOY plane Figure 4 Another cross-sectional view of the wearable ring 100 is shown.

[0158] Fig.10 The wearable finger ring 100 shown is also provided with two electrodes, electrode A and electrode B. When the wearable finger ring 100 is in a worn state, electrode A and electrode B are used to be close to or in contact with a human body to support a current coupled HBC communication mode.

[0159] In order to achieve close to or contact with the human body, different from Figure 5 The wearable ring 100 shown, Fig.10 In the wearable finger ring 100 shown, the electrode A is attached to the area of ​​the outer surface of the hard shell 120 corresponding to the third ring segment L3, that is, it is set in the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the third ring segment L3; the electrode B is attached to the area of ​​the outer surface of the hard shell 120 corresponding to the fourth ring segment L4, that is, it is set in the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the fourth ring segment L4. The electrode A can also be regarded as attached to the outer surface of the third ring segment L3, and the electrode B can also be regarded as attached to the outer surface of the fourth ring segment L4.

[0160] Among them, when the wearable finger ring 100 is in the wearing state, the outer surface of the third ring segment L3 can be in contact with the adjacent finger; the outer surface of the fourth ring segment L4 can also be in contact with the adjacent finger. In this case, the electrode A attached to the outer surface of the third ring segment L3 can be in contact with the adjacent finger, and the electrode B attached to the outer surface of the fourth ring segment L4 can also be in contact with the adjacent finger.

[0161] Fig.10In the wearable ring 100 shown, when the wearable ring 100 is in the wearing state, the outer surface of the third ring segment L3 can contact the first adjacent finger; the outer surface of the fourth ring segment L4 can contact the second adjacent finger. Of course, in other embodiments, when the wearable ring 100 is in the wearing state, both the third ring segment L3 and the fourth ring segment L4 can contact the first adjacent finger, or both the third ring segment L3 and the fourth ring segment L4 can contact the second adjacent finger.

[0162] For example, Fig.10 In the wearable ring 100 shown, the third ring segment L3 can be distributed on the first side ring segment L 侧1 and the first bottom ring segment L 底1 The fourth ring segment L4 can be distributed in the second side ring segment L 侧2 and the second bottom ring segment L 底2 Among them, the first bottom ring segment L 底1 Refers to the bottom ring segment L 底 The area distributed on the first side of the reference line O1, the second bottom ring segment L 底 Refers to the bottom ring segment L 底 The area on the second side of the reference line O1. The reference line O1 refers to the area passing through the center O of the wearable ring 100 and the top area L. 顶 The first side of the reference line O1 refers to the side of the reference line O1 that is closer to the first side ring segment L. 侧1 The second side of the reference line O1 refers to the side of the reference line O1 that is closer to the second side ring segment L. 侧2 The third ring segment L3 is distributed on the first side ring segment L 侧1 and the first bottom ring segment L 底1 The meaning of the fourth ring segment L4 is distributed in the second side ring segment L 侧2 and the second bottom ring segment L 底2 The meaning of can be adaptively referred to the first ring segment L1 distributed in the first side ring segment L 侧1 , bottom ring segment L 底 and the second side ring segment L 侧2 Related explanations.

[0163] Take reference line O1 as reference Fig.10 The positions of the third ring segment L3 and the fourth ring segment L4 in FIG. 1 are described as follows. The third ring segment L3 is distributed on the first side of the reference line O1, and the fourth ring segment L4 is distributed on the other side of the reference line O1. For example, the third ring segment L3 and the fourth ring segment L4 are axially symmetrical about the reference line O1. It can be seen that Fig.10 In the wearable finger ring 100 shown, the electrode A and the electrode B are located on different sides of the wearing finger when worn.

[0164] It should be understood that the first side ring segment L 侧1 The outer surface of the second side ring segment L can contact the first adjacent finger. 侧2 The outer surface of the third ring segment L3 can contact the second adjacent finger. Therefore, when the wearable ring 100 is in the worn state, the outer surface of the third ring segment L3 can contact the first adjacent finger, and the outer surface of the fourth ring segment L4 can contact the second adjacent finger.

[0165] Based on this, when the wearable ring 100 is in the worn state, the electrode A arranged on the outer surface of the third ring segment L3 can be close to or in contact with the first adjacent finger; the electrode B arranged on the outer surface of the fourth ring segment L4 can be close to or in contact with the second adjacent finger, thereby achieving the purpose of electrode A and electrode B contacting or approaching the human body.

[0166] It should be noted that Fig.10 In the wearable ring 100 shown, the electrode A and the electrode B are separated by a gap or an insulator (for example, the electrode A and the electrode B are mounted by slotting the hard shell 120, and the insulator between the electrode A and the electrode B can be the structure of the hard shell 120 itself, so that a smooth transition of the outer surface 100b of the wearable ring 100 can be achieved), so that the electrode A and the electrode B are isolated. The specific implementation of the electrode A and the electrode B can refer to Figure 5 Related content in .

[0167] Fig.10 The electrodes A and B in the embodiment can also meet the requirements of the current-coupled HBC communication mode for two signal electrodes, and can be used as two signal electrodes of the current-coupled HBC communication mode, so that the wearable ring 100 can be in the current-coupled HBC communication mode.

[0168] Among them, electrode A can be used as a positive signal electrode, electrode B can be used as a negative signal electrode, and the two electrodes can also be used vice versa. When the wearable finger ring 100 is in a wearing state, electrode A is close to or in contact with the first adjacent finger, and electrode B is also close to or in contact with the second adjacent finger. The first communication signal is transmitted between the wearable finger ring 100 and the human body through electrode A and electrode B, thereby realizing the current coupling HBC of the first communication signal. Specifically, when it is necessary to send the first communication signal, the current corresponding to the first communication signal from the circuit structure 130 is fed into the first adjacent finger and the second adjacent finger through electrode A and electrode B. In this way, the first communication signal is transmitted to the human body through electrode A and electrode B, thereby realizing the sending of the first communication signal. When it is necessary to receive the first communication signal, the current corresponding to the first communication signal from the human body is transmitted to electrode A and electrode B respectively through the first adjacent finger and the second adjacent finger, and a potential difference is generated between electrode A and electrode B. By detecting the potential difference between electrode A and electrode B, the reception of the first communication signal is realized.

[0169] In some embodiments, Fig.10 In the wearable ring 100 shown, the circuit structure 130 can be used to select electrode A or electrode B as the positive signal electrode of the current coupling HBC communication mode, and the switching of the positive signal electrode of the current coupling HBC communication mode can be realized, so that an electrode with better transmission quality can be selected from electrode A and electrode B as the positive signal electrode of the current coupling HBC communication mode to improve the communication quality. In this embodiment, the circuit structure 130 can also be used to select electrode A or electrode B as the signal electrode of the capacitive coupling HBC communication mode, and the switching of the signal electrode of the capacitive coupling HBC communication mode can be realized, so that an electrode with better transmission quality can be selected from electrode A and electrode B as the signal electrode of the capacitive coupling HBC communication mode to improve the communication quality.

[0170] As can be seen from the above, Fig.10 In the wearable ring 100 shown, both electrode A and electrode B are located on the outer surface 100b of the wearable structure 101. Compared with the solution in which electrode A and electrode B are located in the same area on the inner surface 100a of the wearable structure 101 (i.e., electrode A is located on the inner surface of the third ring segment L3, and electrode B is located on the inner surface of the fourth ring segment L4), the distance between electrode A and electrode B is larger. Fig.11 visible, Fig.11 A schematic diagram of an annular structure provided for an embodiment of the present application. In the annular structure, the circumferential dimension of the position farther away from the center of the ring on the same ring segment is larger. Taking ring segment M as an example, the figure illustrates a total of three positions on ring segment M, namely position M1, position M2 and position M3. Obviously, the circumferential dimension of position M3 farthest from the center of the ring is larger than the circumferential dimension of position M2 second farthest from the line change, and the circumferential dimension of position M2 second farthest from the line change is larger than the circumferential dimension of position M1 closest to the center of the ring. Therefore, Fig.10 In the wearable ring 100 shown, electrode A and electrode B are distributed on the outer surface 100b of the wearable structure 101, and are located at a position farther away from the center of the ring structure of the wearable structure 101. Therefore, the distance between electrode A and electrode B is larger, which makes the return path between electrode A and electrode B longer, the isolation between electrode A and electrode B is better, and the transmission loss is reduced.

[0171] In addition, electrode A and electrode B are also on different sides of the reference line O1. In the current coupling HBC communication mode, taking electrode A as the positive signal electrode and electrode B as the negative signal electrode as an example, the current starts from electrode A and returns to electrode B. Since it is impossible to directly pass through the ring body of the wearable structure 101 from electrode A located on one side outer surface 100b to electrode B on the other side outer surface 100b, the current needs to start from the position of electrode A on one side outer surface 100b and flow along the human body path bypassing the wearable finger ring 100 to the position of electrode B on the other side outer surface 100b. Compared with the solution where both electrode A and electrode B are located at the same position on the inner surface 100a, in the solution where both electrode A and electrode B are located at the same position on the inner surface 100a, since both electrode A and electrode B are located at the inner surface 100a, there is no ring body of the wearable structure 101 between electrode A and electrode B, and the current can flow directly from the position where electrode A is located on the inner surface 100a to the position where electrode B is located on the inner surface 100a, without bypassing the ring body of the wearable structure 101. Obviously, Fig.10 In the wearable finger ring 100 shown, since the two electrodes are located on the outer surface 100b and on different sides of the wearing finger, the current return needs to bypass the wearable finger ring 100, which makes the return path between electrode A and electrode B longer, the isolation between electrode A and electrode B is better, and the transmission loss is reduced.

[0172] Please continue to refer to Figure 8 , the return path S3 in the figure is Fig.10 As shown in the reflux path of the wearable finger ring 100, it can be seen that the reflux path S3 starts from the position where the electrode A contacts the ring finger, bypasses the gap between the ring finger and the middle finger, extends along the left edge of the gap between the ring finger and the middle finger, then crosses the middle finger, bypasses the gap between the index finger and the middle finger, and extends along the right edge of the gap between the index finger and the middle finger to the position where the electrode B contacts the index finger. Obviously, compared with the reflux path S2, the reflux path S2 starts from the position where the electrode A contacts the first side of the middle finger, crosses the middle finger, and ends at the position where the electrode B contacts the second side of the middle finger. Obviously, the reflux path S3 is longer than the reflux path S2.

[0173] also, Fig.10 In the wearable ring 100 shown, compared with setting the electrodes A and B on the inner surface 100a of the wearable structure 101, setting the electrodes A and B on the outer surface 100b of the wearable structure 101 is more convenient for processing the electrodes A and B, mainly for the following reasons:

[0174] First, the inner surface 100a of the wearable structure 101 is located on an inner wall surface that is difficult to operate. If the electrodes A and B are arranged on the inner surface 100a of the wearable structure 101, the processing is difficult; however, if the electrodes A and B are arranged on the outer surface 100b of the wearable structure 101, they can be processed directly from the outside, which is easy to process.

[0175] Second, the inner surface 100a of the wearable structure 101 is provided by the inner surface of the soft shell 110. Since the soft shell 110 is made of a soft material, it is more difficult to set the electrodes A and B on the soft material than to set the electrodes A and B on a hard material.

[0176] It should be noted that Fig.10 The wearable ring 100 shown is distributed in the first side ring segment L3 with the third ring segment L4. 侧1 and the first bottom ring segment L 底1 The fourth ring segment L4 is distributed in the second side ring segment L 侧2 and the second bottom ring segment L 底2 This is explained as an example. Fig.10 The wearable ring 100 shown can be worn on a wearing finger (ring finger, middle finger, index finger) having two adjacent fingers, so that the electrode A and the electrode B are close to or in contact with the human body, thereby realizing the current coupling HBC of the first communication signal. In the case where the wearable ring 100 is worn on the index finger, considering that the index finger is often in a state where it cannot contact the thumb and one of the electrodes A and B cannot contact or approach the thumb (the adjacent finger of the index finger), the user can be prompted not to wear the wearable ring 100 on the index finger when the first communication signal needs to be transmitted.

[0177] It should be understood that in other embodiments, when the wearable finger ring 100 is in the wearing state, the third ring segment L3 may also be distributed at other positions that can contact the first adjacent finger; the fourth ring segment L4 may also be distributed at other positions that can contact the second adjacent finger. 侧1 The fourth ring segment L4 is distributed in the second side ring segment L 侧2 For another example, the third ring segment L3 is distributed in the first side ring segment L 侧1 and the first top ring segment, the fourth ring segment L4 is distributed in the second side ring segment L 侧2 and a first top ring segment. The first top ring segment is distributed on the reference line O1 close to the first side ring segment L 侧1 The second top ring segment is distributed on the reference line O1 near the second side ring segment L 侧2 In contrast, Fig.10In the illustrated embodiment, the third ring segment L3 and the fourth ring segment L4 both occupy almost half of the ring structure of the wearable ring 100, and the third ring segment L3 and the fourth ring segment L4 are larger. Accordingly, the area of ​​electrode A arranged on the outer surface of the third ring segment L3 is larger, and the area of ​​electrode B arranged on the outer surface of the fourth ring segment L4 is larger. The area in which the electrodes A and B are in contact with the human body is larger, which can reduce the impedance of the signal transmission channel, thereby reducing the transmission loss and improving the transmission quality of the communication signal.

[0178] For example, please refer to Fig.12 , Fig.12 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 4 . Fig.12 It can be understood that along the XOY plane Figure 4 Another cross-sectional view of the wearable ring 100 is shown.

[0179] The wearable finger ring 100 includes an electrode B (i.e., a second electrode) and an electrode C (i.e., a third electrode). The electrode B is attached to the area of ​​the outer surface of the hard shell 120 corresponding to the first ring segment L1, that is, the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the first ring segment L1; the electrode C is attached to the area of ​​the outer surface of the hard shell 120 corresponding to the fifth ring segment L5, that is, the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the fifth ring segment L5. It can be seen that Fig.12 In the wearable ring 100 shown, the electrode B and the electrode C are both arranged on the outer surface 100b of the wearable structure 101, which is convenient for processing. For a specific understanding, please refer to Fig.10 Related description in .

[0180] When the wearable ring 100 is in the wearing state, the electrode B is in contact with the human body, and the electrode C is not in contact with the human body. Among them, the electrode B is electrically connected to the circuit structure 130, and the electrode C is electrically connected to the ground (such as the shell of the battery 140). In the specific implementation process, the electrical connection can be achieved by means of shrapnel, conductive cloth, conductive glue, welding metal wire, direct contact, etc.

[0181] It should be noted that the relevant instructions for the position setting of electrode B can be adapted to refer to Figure 5 The description of the position setting of the middle electrode A will not be repeated here. The focus here is on the description of the added electrode C.

[0182] In order to achieve that the electrode C does not contact the human body, optionally, Fig.12In the wearable ring 100 shown, the electrode C is mounted on the outer surface of the hard shell 120 in an area corresponding to the fifth ring segment L5, that is, it is arranged on the outer surface 100b of the wearable structure 101 in an area corresponding to the fifth ring segment L5, and can also be regarded as being mounted on the outer surface of the fifth ring segment L5.

[0183] Among them, when the wearable ring 100 is in the wearing state, the fifth ring segment L5 cannot be in contact with the adjacent fingers. In this case, the electrode C mounted on the outer surface of the fifth ring segment L5 can avoid contact with the adjacent fingers, and naturally can avoid contact with the human body. In other embodiments, the electrode C can also be arranged inside the wearable structure 101. For example, it is mounted on the area corresponding to the fifth ring segment L5 inside the cavity of the hard shell 120, such as the area corresponding to the fifth ring segment L5 on the inner wall surface of the cavity of the hard shell 120. It should be understood that the interior of the cavity of the hard shell 120 does not contact with the fingers of the human body, so the electrode C can avoid contact with the fingers of the human body.

[0184] For example, Fig.12 In the wearable ring 100 shown, the fifth ring segment L5 can be distributed in the top ring segment L 顶 The fifth ring segment L5 is distributed in the top ring segment L 顶 The meaning of can be adapted to refer to the explanation of the above related content. It should be understood that the top ring segment L 顶 The outer surface of the wearable finger ring 100 cannot contact with the adjacent fingers. Therefore, when the wearable finger ring 100 is in the wearing state, the outer surface of the wearable finger ring 100 is distributed in the top ring segment L. 顶 The fifth ring segment L5 can not contact with the adjacent fingers. Based on this, when the wearable finger ring 100 is in the wearing state, the electrode C arranged on the outer surface of the fifth ring segment L5 can not contact with the adjacent fingers, so as to achieve the purpose that the electrode C can not contact with the human body.

[0185] It should be noted that, in a specific implementation, the electrode C may be a coating structure formed by electroplating or any other process, and the material used for the coating may be any conductive material such as copper, silver chloride, etc. Of course, in other embodiments, the electrode C may also be an electrode sheet structure adapted to the outer surface of the hard shell 120 corresponding to the fifth ring segment L5. The electrode C and the electrode B may be insulated by a gap or an insulator (for example, the electrode B and the electrode C are mounted by grooving the hard shell 120, and the insulator between the electrode B and the electrode C may be the structure of the hard shell 120 itself, and the non-conductive hard shell 120 is separated, thereby achieving insulation between the electrode B and the electrode C). Of course, in other embodiments, other structures may also be provided for insulation.

[0186] According to the aforementioned Figure 3It can be seen from the relevant content that capacitive coupling HBC requires a signal electrode that is close to or in contact with the human body, and a ground electrode that is not in contact with the human body. Fig.12 The electrodes B and C in the embodiment can meet the requirements of the capacitive coupling HBC communication mode for two electrodes, so Fig.12 The wearable finger ring 100 shown can support the capacitive coupling HBC communication mode. Specifically, the electrode B can be used as a signal electrode, and the electrode C can be used as a ground electrode.

[0187] Among them, when the wearable ring 100 is in a worn state, the electrode B is close to or in contact with the adjacent finger, and the electrode C is not in contact with the human body. The second communication signal is transmitted between the wearable ring 100 and the human body through the electrode B and the electrode C, thereby realizing the capacitive coupling HBC of the second communication signal. Specifically, when it is necessary to send the second communication signal, the current corresponding to the second communication signal from the circuit structure 130 is fed into the adjacent finger through the electrode B. In this way, the second communication signal is transmitted to the human body through the electrode B and the electrode C, thereby realizing the sending of the first communication signal. When it is necessary to receive the second communication signal, the current corresponding to the second communication signal from the human body is transmitted to the electrode B through the adjacent finger, and a potential difference is generated between the electrode B and the electrode C. By detecting the potential difference between the electrode B and the electrode C, the reception of the second communication signal is realized.

[0188] Fig.12 The wearable ring 100 shown can be worn on any finger, and the electrode B can be close to or in contact with the human body, while the electrode C is not in contact with the human body, thereby realizing capacitive coupling HBC of the second communication signal. When the wearable ring 100 is worn on the thumb, considering that the thumb is often separated from the index finger and the electrode B cannot contact or approach the index finger (the adjacent finger of the thumb), the user can be prompted to put the thumb and index finger together when the second communication signal needs to be transmitted, or the user can be prompted to wear the wearable ring 100 on other fingers other than the thumb.

[0189] It should be noted that Fig.12 The wearable ring 100 shown in FIG. 1 is distributed in the first side ring segment L1. 侧1 , bottom ring segment L 底 and the second side ring segment L 侧2 , the fifth ring segment L5 can be distributed in the top ring segment L 顶 The first ring segment L1 is distributed in the first side ring segment L 侧1 , bottom ring segment L 底 and the second side ring segment L 侧2 The implementation effect can be adaptively referenced Figure 5 Related description in .

[0190] It should be noted that the fifth ring segment L5 is distributed in the top ring segment L 顶 , the setting position of electrode C is staggered with the setting position of electrode B, and the positions of electrode C and electrode B are opposite. Compared with the case where electrode C is set at a position not opposite to the position of electrode B, Fig.12 In the example, the distance between electrode C and electrode B is larger. Figure 3 It can be seen from the relevant content shown that in the capacitive coupling mode, the farther the signal electrode and the ground electrode at the transmitting end are, the lower the coupling between the two is, and the better the isolation is. In this way, most of the energy output by the signal electrode at the transmitting end flows to the signal electrode at the receiving end, rather than to the ground electrode at the transmitting end, thereby reducing the transmission loss, increasing the transmission power, and improving the transmission quality of the communication signal. Therefore, Fig.12 In the embodiment shown, the distance between electrode C and electrode B is larger. When electrode C and electrode B are used as two electrodes of capacitive coupling HBC for human body communication, the transmission power can be increased to a higher level, thereby improving the transmission quality of the communication signal.

[0191] It should be understood that in other embodiments, when the wearable finger ring 100 is in the wearing state, the first ring segment L1 can also be distributed at other positions that can contact with adjacent fingers. 侧1 and the second side ring segment L 侧2 The fifth ring segment L5 may also be distributed at other positions that do not contact with adjacent fingers. For example, the fifth ring segment L5 is distributed at the bottom ring segment L 底 It should be understood that when electrode C is arranged at this position, electrode B needs to avoid electrode C.

[0192] For example, please refer to Fig.13 , Fig.13 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 5 . Fig.13 To understand that along the XOY plane Figure 4 Another cross-sectional view of the wearable ring 100 is shown.

[0193] The wearable finger ring 100 includes an electrode A (i.e., a first electrode), an electrode B (i.e., a second electrode), and an electrode C (i.e., a third electrode). Among them, the electrode A is attached to the area corresponding to the first ring segment L1 on the outer surface of the hard shell 120, that is, it is set in the area corresponding to the first ring segment L1 on the outer surface 100b of the wearable structure 101; the electrode B is attached to the area corresponding to the second ring segment L2 on the inner surface of the soft shell 110, that is, it is set in the area corresponding to the second ring segment L2 on the inner surface 100a of the wearable structure 101; the electrode C is attached to the area corresponding to the fifth ring segment L5 on the outer surface of the hard shell 120, that is, it is set in the area corresponding to the fifth ring segment L5 on the outer surface 100b of the wearable structure 101. When the wearable finger ring 100 is in the wearing state, the electrodes A and B are in contact with the human body, and the electrode C can not be in contact with the human body. Among them, the electrodes A and B are electrically connected to the circuit structure 130 respectively, and the electrode C is electrically connected to the ground (such as the shell of the battery 140).

[0194] It should be noted that the relevant instructions for the position setting of electrodes A and B can be adapted to refer to Figure 5 The structure of electrode B can also be referred to Figure 6 The relevant contents in the article and the relevant instructions for the location of electrode C can be adapted to refer to Fig.12 Related content.

[0195] According to the aforementioned Figure 2 and Figure 3 From the relevant content, it can be seen that the current coupling HBC requires two signal electrodes for being close to or in contact with the human body; the capacitive coupling HBC requires one signal electrode for being close to or in contact with the human body, and one ground electrode for not being in contact with the human body.

[0196] visible, Fig.13 The electrode A and the electrode B in the embodiment can meet the requirements of the current coupling HBC communication mode for two signal electrodes, and can be used as two signal electrodes of the current coupling HBC communication mode to realize the current coupling HBC of the first communication signal, that is, Fig.13 The wearable ring 100 shown can support the current coupled HBC communication mode. Specifically, electrode A can be used as a positive signal electrode, electrode B can be used as a negative signal electrode, and vice versa. In addition, Fig.13 Electrode A and electrode C, or electrode B and electrode C in the embodiment can meet the requirements of the capacitive coupling HBC communication mode for two electrodes, so Fig.13 The wearable finger ring 100 shown can support the capacitive coupling HBC communication mode. Specifically, electrode A or electrode B can be used as a signal electrode, and electrode C can be used as a ground electrode.

[0197] visible, Fig.13The wearable ring 100 shown supports two communication modes: current coupling HBC communication mode and capacitive coupling HBC communication mode. In order to realize the control of the communication mode of the wearable ring 100 by the circuit structure 130, for example, please refer to Fig.14 , Fig.14 for Fig.13 The circuit schematic diagram of the wearable ring shown.

[0198] The wearable ring 100 includes a control unit, a first HBC unit, a second HBC unit, a circuit switching unit, a first electrostatic discharge (ESD) unit, a second ESD unit, a third SED unit, an electrode A, an electrode B, and an electrode C. Among them, the control unit, the first HBC unit, the second HBC unit, the circuit switching unit, the first ESD unit, the second ESD unit, and the third ESD unit belong to a partial structure of the circuit structure 130. Of course, the circuit structure 130 is not limited to the first HBC unit, the second HBC unit, the circuit switching unit, the first ESD unit, the second ESD unit, and the third ESD unit, and may include more or less units than shown in the figure, for example, the circuit structure 130 does not include the first ESD unit, the second ESD unit, and the third ESD unit.

[0199] Electrode A is electrically connected to the ground via a first ESD unit, and the first ESD unit is used to release the static electricity of electrode A; electrode B is electrically connected to the ground via a second ESD unit, and the second ESD unit is used to release the static electricity of electrode B; electrode C is electrically connected to the ground via a third ESD unit, and the third ESD unit is used to release the static electricity of electrode C.

[0200] The first HBC unit may include a capacitively coupled HBC receiver and / or transmitter, wherein the capacitively coupled HBC transmitter is used to generate a second communication signal transmitted based on the capacitively coupled HBC communication mode, and the capacitively coupled HBC receiver is used to detect the second communication signal transmitted based on the capacitively coupled HBC communication mode. It should be understood that when communicating in a duplex mode, the first HBC unit includes a capacitively coupled HBC receiver and transmitter; when communicating in a simplex mode, the first HBC unit includes a capacitively coupled HBC receiver or transmitter.

[0201] The second HBC unit may include a receiver and / or a transmitter of a current-coupled HBC, wherein the transmitter of the current-coupled HBC is used to generate a first communication signal transmitted based on the current-coupled HBC communication mode, and the receiver of the current-coupled HBC is used to detect the first communication signal transmitted based on the current-coupled HBC communication mode. It should be understood that when communicating in a duplex mode, the second HBC unit includes a receiver and a transmitter of the current-coupled HBC; when communicating in a simplex mode, the second HBC unit includes a receiver or a transmitter of the current-coupled HBC.

[0202] It should be noted that the first HBC unit and the second HBC unit are functional units based on functional division. In specific implementation, the first HBC unit and the second HBC unit can be implemented by the same hardware module in a switching mode. For example, by matching different port impedances for the hardware module, it works in a capacitive coupling HBC communication mode or a current coupling HBC communication mode. When it works in the capacitive coupling HBC communication mode, the hardware module is used to implement the function of the first HBC unit; when it works in the current coupling HBC communication mode, the hardware module is used to implement the function of the second HBC unit. Of course, the first HBC unit and the second HBC unit can be implemented by two hardware modules (these two hardware modules implement the functions of the first HBC unit and the second HBC unit through different components, but can be integrated together or separated in physical structure), and the embodiments of the present application do not specifically limit this.

[0203] The circuit switching unit is electrically connected to the control unit, the first HBC unit, the second HBC unit, the electrode A and the electrode B respectively, and the electrode C is electrically connected to the ground. It should be noted that the first HBC unit is also electrically connected to the ground. In the specific implementation process, the ground of each functional module is electrically connected together, so Fig.14 It is shown that the first HBC unit and the electrode C are electrically connected together.

[0204] The control unit can control the circuit switching unit to connect the first HBC unit to one of the electrodes A and B, so that one of the electrodes A and B is used as a signal electrode in the capacitive coupling HBC communication mode, and the electrode C is used as a ground electrode in the capacitive coupling HBC communication mode, so that the wearable finger ring 100 is in the capacitive coupling HBC communication mode. When the wearable finger ring 100 is in the capacitive coupling HBC communication mode, the second communication signal is transmitted between the first HBC unit and the human body via one of the electrodes A and B and the electrode C, thereby realizing the capacitive coupling HBC of the second communication signal.

[0205] It should be noted that when the first HBC unit is connected to electrode A, electrode A is used as the signal electrode of the capacitive coupling HBC communication mode, electrode C is used as the ground electrode of the capacitive coupling HBC communication mode, and the second communication signal is transmitted between the first HBC unit and the human body via electrode A and electrode C; when the first HBC unit is connected to electrode B, electrode B is used as the signal electrode of the capacitive coupling HBC communication mode, electrode C is used as the ground electrode of the capacitive coupling HBC communication mode, and the second communication signal is transmitted between the first HBC unit and the human body via electrode B and electrode C.

[0206] The control unit can also control the circuit switching unit to connect the first end of the second HBC unit to one of the electrodes A and B, and connect the second end of the second HBC unit to the other of the electrodes A and B, so that one of the electrodes A and B is used as a positive signal electrode in the current-coupled HBC communication mode, and the other of the electrodes A and B is used as a negative signal electrode in the current-coupled HBC communication mode, so that the wearable finger ring 100 is in the current-coupled HBC communication mode. When the wearable finger ring 100 is in the current-coupled HBC communication mode, the first communication signal is transmitted between the second HBC unit and the human body via the electrodes A and B, thereby realizing the current-coupled HBC of the first communication signal.

[0207] It should be noted that when the first end of the second HBC unit is connected to electrode A and the second end of the second HBC unit is connected to electrode B, electrode A is used as the positive signal electrode of current-coupled HBC, and electrode B is used as the negative signal electrode of current-coupled HBC; when the first end of the second HBC unit is connected to electrode B and the second end of the second HBC unit is connected to electrode A, electrode B is used as the positive signal electrode of current-coupled HBC, and electrode A is used as the negative signal electrode of current-coupled HBC.

[0208] It can be seen that the control unit can control the connection of the electrode to the first HBC unit or the second HBC unit by controlling the switching function of the circuit switching unit, so as to realize the switching between the capacitive coupling HBC communication mode and the current coupling HBC communication mode, so as to select the appropriate communication mode for communication according to different application scenarios, so as to meet the communication needs in different application scenarios. For example, when confidentiality is required, the wearable device is controlled to be in the current coupling HBC communication mode; when long-distance low-power transmission is required, the wearable device is controlled to be in the capacitive coupling HBC communication mode.

[0209] During the specific implementation process, the circuit switching unit can be XPXT (X represents the number; P represents the switch knife; T represents the switch throw) or a switch composed of multiple other switches that can realize the above switching function.

[0210] In addition, optionally, the control unit can also control the circuit switching unit to switch the electrode connected to the first end of the second HBC unit between electrode A and electrode B, so that electrode A or electrode B can be selected as the positive signal electrode of the current-coupled HBC communication mode, and then an electrode with better transmission quality can be selected between electrode A and electrode B as the positive signal electrode of the current-coupled HBC communication mode to improve the communication quality.

[0211] Optionally, the control unit can also control the circuit switching unit to switch the electrode connected to the first HBC unit between electrode A and electrode B, thereby selecting electrode A or electrode B as the positive signal electrode of the current-coupled HBC communication mode, and then an electrode with better transmission quality can be selected between electrode A and electrode B as the positive signal electrode of the current-coupled HBC communication mode to improve the communication quality.

[0212] It should be noted that Fig.13 The wearable ring 100 shown can be worn on any finger, and both electrodes A and B can be close to or in contact with the human body, and electrode C can be not in contact with the human body, so that the current coupling HBC of the first communication signal or the capacitive coupling HBC of the second communication signal can be achieved. In the case where the wearable ring 100 is worn on the thumb, considering that the thumb is often separated from the index finger and the electrode A cannot contact or approach the index finger (the adjacent finger of the thumb), the user can be prompted to put the thumb and index finger together when a signal needs to be transmitted, or the user can be prompted to wear the wearable ring 100 on other fingers other than the thumb.

[0213] For example, please refer to Fig.15 , Fig.15 for Figure 4 Schematic diagram of the planar structure of the wearable ring shown Figure 6 . Fig.15 To understand that along the XOY plane Figure 4 Another cross-sectional view of the wearable ring 100 is shown.

[0214] The wearable finger ring 100 includes an electrode A (i.e., a first electrode), an electrode B (i.e., a second electrode), and an electrode C (i.e., a third electrode). Among them, electrode A is attached to the area of ​​the outer surface of the hard shell 120 corresponding to the third ring segment L3, that is, it is set in the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the third ring segment L3; electrode B is attached to the area of ​​the outer surface of the hard shell 120 corresponding to the fourth ring segment L4, that is, it is set in the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the fourth ring segment L4; electrode C is attached to the area of ​​the outer surface of the hard shell 120 corresponding to the fifth ring segment L5, that is, it is set in the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the fifth ring segment L5. When the wearable finger ring 100 is in a worn state, electrode A and electrode B are in contact with the human body, and electrode C can be out of contact with the human body. Among them, electrode A and electrode B are electrically connected to the circuit structure 130 respectively, and electrode C is electrically connected to the ground (such as the shell of the battery 140). It can be seen that, Fig.15 In the embodiment, the electrodes A, B and C are all disposed on the outer surface 100b of the wearable structure 101 for easy processing. Fig.10 See the relevant instructions in .

[0215] It should be noted that the relevant instructions for the position setting of electrodes A and B can be adapted to refer to Fig.10 For the relevant contents, the relevant instructions for the position setting of electrode C can be adapted to refer to Fig.12 Since the electrode B is disposed on the outer surface 100b of the wearable finger ring 100, there is no need to avoid the sensor, so it can be set as Figure 6 The structure shown in (a) in . Fig.15 In the wearable ring 100 shown in FIG. 1 , the position setting of the electrode C can be adaptively referred to in FIG. Fig.13 The relevant contents in will not be repeated here.

[0216] It should be noted that Fig.15 In the wearable finger ring 100 shown, the electrodes A and C and the electrodes B and C may be separated by a gap or an insulator, so as to achieve insulation between the electrodes A and C and between the electrodes B and C; the electrodes A and B may also be separated by a gap or an insulator, so as to achieve insulation between the electrodes A and B. The implementation of the insulator can refer to Fig.10 Related content in .

[0217] Fig.15 The electrode A and the electrode B in the current coupling HBC communication mode can meet the requirements of the two signal electrodes, and are used as the two signal electrodes of the current coupling HBC communication mode to realize the current coupling HBC of the first communication signal, that is, Fig.15The wearable ring 100 shown can support the current coupled HBC communication mode. Specifically, electrode A can be used as a positive signal electrode, electrode B can be used as a negative signal electrode, and vice versa. Fig.15 The electrode A and the electrode C, or the electrode B and the electrode C in the capacitive coupling HBC communication mode can meet the requirements of the two electrodes, and can be used as the two electrodes of the capacitive coupling HBC communication mode to realize the capacitive coupling HBC of the second communication signal. Fig.15 The wearable ring 100 shown can support the capacitive coupling HBC communication mode. Specifically, electrode A or electrode B can be used as a signal electrode of the capacitive coupling HBC communication mode, and electrode C can be used as a ground electrode of the capacitive coupling HBC communication mode.

[0218] It should be understood that Fig.15 In the wearable ring 100, a circuit structure 130 can also be provided to select electrode B or electrode C as a signal electrode in a capacitive coupling HBC communication mode, and can also be used to select electrode B or electrode C as a positive signal electrode in a current coupling HBC communication mode. Fig.14 The relevant contents shown are not repeated here. The implementation effect can be referred to Fig.14 The contents of the related embodiments will not be repeated here.

[0219] It should be noted that Fig.15 The wearable ring 100 shown can be worn on a wearing finger having two adjacent fingers, so that electrodes A and B are close to or in contact with the human body, and electrode C is not in contact with the human body, so that current coupling HBC of the first communication signal or capacitive coupling HBC of the second communication signal can be achieved. In the case where the wearable ring 100 is worn on the index finger, considering that the index finger is often in a state where it cannot contact the thumb and one of the electrodes A and B cannot contact or approach the thumb (the adjacent finger of the index finger), the user can be prompted not to wear the wearable ring 100 on the index finger when a signal needs to be transmitted.

[0220] For example, please refer to Fig.16 , Fig.16 A schematic diagram of the three-dimensional structure of another wearable ring provided in an embodiment of the present application. Figures 4 to 15 The wearable ring 100 shown, Fig.16 In the wearable ring 100 shown, the hard shell 120 (ie, the first wearable structure) is a conductive shell made of a conductive material, such as a metal shell made of a metal material. In this case, the hard shell 120 is conductive.

[0221] Since the hard shell 120 has a conductive property, which satisfies the conductive property requirements of the electrode, the hard shell 120 can be reused as an electrode without the need to additionally provide an electrode with a conductive property. Figures 16 to 22 , respectively Figures 5 to 15 How to reuse the hard shell 120 as an electrode in various wearable finger rings 100 is described. It should be noted that, Figures 16 to 22 The wearable ring 100 shown focuses on how the wearable ring 100 reuses the hard shell 120 as an electrode. Other specific implementations and implementation effects of the wearable ring 100 can be adaptively referred to the corresponding embodiments, and the embodiments of this application will not be repeated.

[0222] for Figure 5 For the wearable ring 100 shown in FIG. 1 , the wearable ring 100 can be Fig.17 The illustrated scheme reuses the hard shell 120 as an electrode.

[0223] For example, please refer to Fig.17 , Fig.17 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 1 . Fig.17 It can be understood as the XOY plane Fig.16 The wearable ring 100 shown is a cross-sectional view obtained by cutting.

[0224] because Figure 5 In the wearable ring 100 shown, electrode A is arranged on the outer surface of the hard shell 120, and electrode B is arranged on the inner surface of the soft shell 110. Therefore, electrode A can reuse the hard shell 120 located on the outside, but electrode B cannot reuse the hard shell 120 located on the outside. Fig.17 In the wearable ring 100 shown, electrode A is the ring segment of the hard shell 120 corresponding to the first ring segment L1; electrode B is still attached to the inner surface of the soft shell 110 corresponding to the second ring segment L2, that is, it is set on the inner surface 100a of the wearable structure 101 corresponding to the second ring segment L2. The content of electrode B reusing the conductive shell is not involved here, and its implementation is referred to Figure 5 With reference to the related content, electrode A is described below.

[0225] It should be understood that the outer surface of the hard shell 120 is used as the outer surface 100b of the wearable structure 101. Therefore, when electrode A reuses the ring segment of the hard shell 120, electrode A can also be regarded as being arranged in the area of ​​the outer surface 100b of the wearable structure 101 corresponding to the first ring segment L1.

[0226] In this case, electrode A may be in contact with or close to the first adjacent finger and / or the second adjacent finger; electrode B may be in contact with or close to the wearing finger. Fig.17 The wearable ring 100 shown can be worn on any finger, and the electrodes A and B can be brought close to or in contact with the human body, thereby achieving current coupling HBC of the communication signal.

[0227] Fig.17 In the wearable ring 100 shown, there is a non-conductive soft shell 110 between the electrode A and the electrode B, that is, the electrode A and the electrode B are separated by the soft shell 110, so as to achieve insulation between the electrode A and the electrode B. In addition, the ring segment of the hard shell 120 corresponding to the first ring segment L1 (i.e., the electrode A) can be separated from the remaining ring segments of the hard shell 120 (the ring segments on the hard shell 120 except the ring segment of the electrode A) by a gap or Fig.17 The insulators 121 are shown to be spaced apart so that the electrode A only occupies the ring segment of the hard shell 120 corresponding to the first ring segment L1. It should be noted that when the first ring segment L1 is distributed throughout all the ring segments of the wearable structure 101, the entire hard shell 120 can be used as the electrode A. In this case, there is no need to open a slit in the hard shell 120.

[0228] for Fig.10 For the wearable ring 100 shown in FIG. 1 , the wearable ring 100 can be Fig.18 The scheme shown reuses the conductive shell as an electrode.

[0229] For example, please refer to Fig.18 , Fig.18 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 2 . Fig.18 It can be understood as the XOY plane Fig.16 Another cross-sectional view of the wearable ring 100 is shown.

[0230] because Fig.10 In the wearable ring 100 shown, the electrode A and the electrode B are both arranged on the outer surface of the hard shell 120, and the electrode A and the electrode B can reuse the hard shell 120 located on the outside, so Fig.18 In the wearable ring 100 shown, electrode A is a ring segment of the hard shell 120 corresponding to the third ring segment L3; electrode B is a ring segment of the hard shell 120 corresponding to the fourth ring segment L4.

[0231] It should be understood that the outer surface of the hard shell 120 is used as the outer surface 100b of the wearable structure 101. Therefore, when the electrode A and the electrode B reuse the ring segment of the hard shell 120, the electrode A can also be regarded as being in the area corresponding to the third ring segment L3 of the outer surface 100b of the wearable structure 101; the electrode B can also be regarded as being in the area corresponding to the fourth ring segment L4 of the outer surface 100b of the wearable structure 101. In this case, the electrode A can contact or be close to the first adjacent finger; the electrode B can contact or be close to the second adjacent finger. Fig.18 The wearable ring 100 shown can be worn on a wearing finger having two adjacent fingers, that is, the electrode A and the electrode B are close to or in contact with the human body, thereby realizing the current coupling HBC of the communication signal.

[0232] Fig.18 In the wearable ring 100 shown, the position of the hard shell 120 between the ring segment of the hard shell 120 corresponding to the third ring segment L3 (i.e., electrode A) and the ring segment of the hard shell 120 corresponding to the fourth ring segment L4 (i.e., electrode B) can be formed by a gap or Fig.18 The insulator 121 shown is spaced apart in a similar manner to achieve insulation between the electrode A and the electrode B.

[0233] Specifically, Fig.18 In the embodiment, the ring segment of the hard shell 120 corresponding to the third ring segment L3 is close to the bottom area L 底 The end of the hard shell 120 corresponds to the fourth ring segment L4 near the bottom area L 底 One end passes through the gap or Fig.18 The insulator 121 shown in the figure is spaced apart in a manner such as the above, and the ring segment of the hard shell 120 corresponding to the third ring segment L3 is close to the top area L 顶 One end of the hard shell 120 is separated from the remaining ring segments (except the ring segments where the electrode A and the ring segments where the electrode B are located) by a gap or Fig.18 The insulator 121 is spaced apart, and the ring segment of the hard shell 120 corresponding to the fourth ring segment L4 is close to the top area L 顶 One end of the hard shell 120 is separated from the remaining ring segment by a gap or Fig.18 The insulator 121 shown is spaced apart, so that the two ends of the electrode A and the electrode B are spaced apart, respectively, thereby achieving insulation between the electrode A and the electrode B.

[0234] It should be noted that the ring segment of the hard shell 120 corresponding to the third ring segment L3 is close to the top area L 顶 One end of the hard shell 120 is separated from the remaining ring segment by a gap or Fig.18The insulator 121 is spaced apart so that the electrode A only occupies the ring segment of the hard shell 120 corresponding to the third ring segment L3; the ring segment of the hard shell 120 corresponding to the fourth ring segment L4 is close to the top area L 顶 One end of the hard shell 120 is separated from the remaining ring segment by a gap or Fig.18 The insulators 121 shown are spaced apart, so that the electrode B only occupies the ring segment of the hard shell 120 corresponding to the fourth ring segment L4. It can be seen that the electrode A and the electrode B are separated by two insulators 121. In other embodiments, there may be only one insulator 121 between the electrode A and the electrode B. In this way, the third ring segment L3 is distributed in the first side ring segment L 侧1 and the first top ring segment, the fourth ring segment L4 is also distributed in the second side ring segment L 侧2 and a first top ring segment.

[0235] For example, please refer to Fig.19 , Fig.19 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 3 . Fig.19 It can be understood as the XOY plane Fig.16 Another cross-sectional view of the wearable ring 100 is shown.

[0236] Fig.19 In the embodiment, the electrode B is arranged on the inner surface of the soft shell 110, and the electrode C is arranged on the outer surface of the hard shell 120. Therefore, the electrode B cannot be reused but the hard shell 120 located on the outside can be reused, but the electrode C can reuse the hard shell 120 located on the outside. Therefore, Fig.19 In the wearable ring 100 shown, the electrode C is a ring segment of the hard shell 120 corresponding to the fifth ring segment L5.

[0237] It should be understood that the outer surface of the hard shell 120 is used as the outer surface 100b of the wearable structure 101. Therefore, when the electrode C reuses the ring segment of the hard shell 120, the electrode C can also be regarded as being disposed in the area corresponding to the fifth ring segment L5 of the outer surface 100b of the wearable structure 101. In this case, the electrode B can contact or be close to the wearing finger; the electrode C can not contact the finger. Fig.19 The wearable ring 100 shown can be worn on any finger, and the electrode B can be close to or in contact with the human body, while the electrode C is not in contact with the human body, thereby realizing capacitive coupling HBC of the second communication signal. Fig.19 In the embodiment, since the non-conductive soft shell 110 is between the electrode C and the electrode B, the electrode C and the electrode B can be insulated. In addition, in order to prevent the electrode C from contacting the adjacent finger, the ring segment of the hard shell 120 corresponding to the fifth ring segment L5 is separated from the remaining ring segments by a gap or an insulator 121.

[0238] for Fig.12 For the wearable ring 100 shown in FIG. 1 , the wearable ring 100 can be Fig. 20 The scheme shown reuses the conductive shell as an electrode.

[0239] For example, please refer to Fig. 20 , Fig. 20 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 4 . Fig. 20 It can be understood as the XOY plane Fig.16 Another cross-sectional view of the wearable ring 100 is shown.

[0240] because Fig.10 In the wearable ring 100 shown, the electrode B and the electrode C are both arranged on the outer surface of the hard shell 120, and the electrode B and the electrode C can reuse the hard shell 120 located on the outside, so Fig. 20 In the wearable ring 100 shown, the electrode B is the ring segment of the hard shell 120 corresponding to the first ring segment L1; the electrode C is the ring segment of the hard shell 120 corresponding to the fifth ring segment L5.

[0241] It should be understood that the outer surface of the hard shell 120 is used as the outer surface 100b of the wearable structure 101. Therefore, when the electrode B and the electrode C reuse the ring segment of the hard shell 120, the electrode B can also be regarded as being in the area corresponding to the first ring segment L1 of the outer surface 100b of the wearable structure 101; the electrode C can also be regarded as being in the area corresponding to the fifth ring segment L5 of the outer surface 100b of the wearable structure 101. In this case, the electrode B can contact or be close to the first adjacent finger and / or the second adjacent finger; the electrode C can not contact the finger. Fig. 20 The wearable ring 100 shown can be worn on a wearing finger having two adjacent fingers, that is, the electrode B is close to or in contact with the human body, and the electrode C is not in contact with the human body, thereby realizing the current coupling HBC of the communication signal.

[0242] Fig. 20 In the wearable ring 100 shown, the position of the hard shell 120 between the ring segment of the hard shell 120 corresponding to the first ring segment L1 (i.e., electrode B) and the ring segment of the hard shell 120 corresponding to the fifth ring segment L5 (i.e., electrode B) can be formed by a gap or Fig. 20 The insulator 121 shown is spaced apart in a similar manner to achieve insulation between the electrode B and the electrode C.

[0243] for Fig.13 For the wearable ring 100 shown in FIG. 1 , the wearable ring 100 can be Fig.18 The scheme shown reuses the conductive shell as an electrode.

[0244] For example, please refer to Fig.21 , Fig.21 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 5 . Fig.21 It can be understood as Fig.16 Another schematic diagram of the wearable ring 100 in the XOY plane is shown, or it can be understood as a schematic diagram of the wearable ring 100 along the XOY plane. Fig.16 Another cross-sectional view of the wearable ring 100 is shown.

[0245] because Fig.13 In the wearable ring 100 shown, electrodes A and C are arranged on the outer surface of the hard shell 120, and electrode B is arranged on the inner surface of the soft shell 110. Therefore, both electrode A and electrode C can reuse the hard shell 120 located on the outside, but electrode B cannot reuse the hard shell 120 located on the outside. Fig.21 In the wearable ring 100 shown, electrode A is a ring segment of the hard shell 120 corresponding to the first ring segment L1; electrode B is attached to the inner surface of the soft shell 110 corresponding to the ring segment of the second ring segment L2, that is, it is arranged on the inner surface 100a of the wearable structure 101 corresponding to the area of ​​the second ring segment L2; electrode C is a ring segment of the hard shell 120 corresponding to the fifth ring segment L5.

[0246] It should be understood that the outer surface of the hard shell 120 is used as the outer surface 100b of the wearable structure 101. Therefore, when the electrode A and the electrode C reuse the ring segment of the hard shell 120, the electrode A can also be regarded as being arranged in the area corresponding to the first ring segment L1 of the outer surface 100b of the wearable structure 101, and the electrode C can also be regarded as being arranged in the area corresponding to the fifth ring segment L5 of the outer surface 100b of the wearable structure 101. In this case, the electrode A can contact or approach the first adjacent finger and / or the second adjacent finger; the electrode B can contact or approach the wearable finger; and the electrode C can not contact the human body. Fig.21 The wearable ring 100 shown can be worn on any finger, and can achieve that electrodes A and B are close to or in contact with the human body, and that electrode C is not in contact with the human body, thereby achieving capacitive coupling HBC or current coupling HBC of the communication signal.

[0247] Fig.21 In the wearable ring 100 shown, the position of the hard shell 120 between the ring segment of the hard shell 120 corresponding to the first ring segment L1 (i.e., electrode A) and the ring segment of the hard shell 120 corresponding to the fifth ring segment L5 (i.e., electrode C) can be formed by a gap or Fig.21The electrodes A and C are separated by the insulator 121 shown, so as to achieve insulation between the electrodes A and C. In addition, the electrodes A and B, as well as the electrodes B and C, are separated by the non-conductive soft shell 110, so as to achieve insulation between the electrodes A and B, as well as between the electrodes B and C.

[0248] for Fig.15 For the wearable ring 100 shown in FIG. 1 , the wearable ring 100 can be Fig. 22 The scheme shown reuses the conductive shell as an electrode. For example, please refer to Fig. 22 , Fig. 22 for Fig.16 Schematic diagram of the planar structure of the wearable ring shown Figure 6 . Fig. 22 It can be understood as Fig.16 Another schematic diagram of the wearable ring 100 in the XOY plane is shown, or it can be understood as a schematic diagram of the wearable ring 100 along the XOY plane. Fig.16 Another cross-sectional view of the wearable ring 100 is shown.

[0249] because Fig.15 In the wearable ring 100 shown, the electrode A, the electrode B and the electrode C are all arranged on the outer surface of the hard shell 120, so the electrode A, the electrode B and the electrode C can reuse the hard shell 120 located on the outside. Fig. 22 In the wearable ring 100 shown, electrode A is a ring segment of the hard shell 120 corresponding to the third ring segment L3; electrode B is a ring segment of the hard shell 120 corresponding to the fourth ring segment L4; electrode C is a ring segment of the hard shell 120 corresponding to the fifth ring segment L5.

[0250] It should be understood that the outer surface of the hard shell 120 is used as the outer surface 100b of the wearable structure 101. Therefore, when the electrodes A, B, and C all reuse the hard shell 120 located on the outside, the electrode A can also be regarded as being arranged in the area corresponding to the third ring segment L3 of the outer surface 100b of the wearable structure 101; the electrode B can also be regarded as being arranged in the area corresponding to the fourth ring segment L4 of the outer surface 100b of the wearable structure 101; and the electrode C can also be regarded as being arranged in the area corresponding to the fifth ring segment L5 of the outer surface 100b of the wearable structure 101. In this case, the electrode A can contact or approach the first adjacent finger; the electrode B can contact or approach the second adjacent finger; and the electrode C can not contact the human body. Fig. 22 The wearable ring 100 shown can be worn on a wearing finger having two adjacent fingers to enable electrodes A and B to be close to or in contact with the human body, and to enable electrode C to not be in contact with the human body, thereby achieving current coupling HBC or capacitive coupling HBC of the communication signal.

[0251] Fig. 22In the wearable ring 100 shown, the position of the hard shell 120 between the ring segment of the hard shell 120 corresponding to the third ring segment L3 (i.e., electrode A) and the ring segment of the hard shell 120 corresponding to the fourth ring segment L4 (i.e., electrode B) can be formed by a gap or Fig. 22 The hard shell 120 can be separated by a gap or a gap between the ring segment L3 of the hard shell 120 (i.e., electrode A) and the ring segment L5 of the hard shell 120 (i.e., electrode C). Fig. 22 The hard shell 120 can be separated by a gap or a gap between the ring segment L4 of the hard shell 120 (i.e., the electrode B) and the ring segment L5 of the hard shell 120 (i.e., the electrode C). Fig. 22 The insulator 121 shown is spaced apart in a similar manner to achieve insulation between the electrode B and the electrode C.

[0252] It should be understood that compared to Figures 4 to 15 For the wearable ring 100 shown, Figures 16 to 22 In the wearable ring 100 shown in the figure, since the hard shell 120 is reused as an electrode, the process steps and costs of laying additional electrodes can be omitted. Of course, in other embodiments, when the hard shell 120 is a conductive shell, the electrodes arranged on the outer surface of the hard shell 120 may not reuse the ring segments of the hard shell 120, but may be connected to the outer surface of the hard shell 120. Figures 4 to 15 The embodiment shown is the same, and the electrodes are arranged on the outer surface of the hard shell 120 in a mounting manner. In this case, since the hard shell 120 is conductive, the electrodes arranged on the outer surface of the hard shell 120 will be conductive through the hard shell 120. Therefore, in order to insulate the electrodes arranged on the outer surface of the hard shell 120, a gap or insulator 121 is arranged at a position between two adjacent electrodes of the hard shell 120 to achieve insulation between the two electrodes. For example, when electrode A and electrode B are arranged on the outer surface of the hard shell 120, a gap or insulator 121 is provided at the position of the hard shell 120 between electrode A and electrode B; for another example, when electrode A and electrode C are arranged on the outer surface of the hard shell 120, a gap or insulator 121 is provided at the position of the hard shell 120 between electrode A and electrode C; for another example, when electrode A, electrode B and electrode C are all arranged on the outer surface of the hard shell 120, a gap or insulator 121 is provided at the position of the hard shell 120 between electrode A and electrode C, a gap or insulator 121 is provided at the position of the hard shell 120 between electrode A and electrode B, and a gap or insulator 121 is provided at the position of the hard shell 120 between electrode B and electrode C.

[0253] It should be noted that the structure of the hard shell 120 and the soft shell 110 is only a schematic diagram of the wearable structure 101. In other embodiments, the wearable structure 101 may have other solutions as long as the electrodes attached to the inner surface 100a of the wearable structure 101 and the electrodes attached to the outer surface 100b of the wearable structure 101 can be insulated.

[0254] In addition, the above Figures 4 to 22 The embodiment shown is described by taking the wearable finger ring 100 as an example. It should be understood that the arrangement schemes of the electrodes in the above embodiments can also be applied to other wearable devices that can be constructed as a ring structure when worn.

[0255] Taking a wearable watch as an example, the wearable watch includes a dial and two straps that can be buckled together. For the wearable watch, the wearing structure includes a shell of the dial and a structure formed by two straps that can be buckled together. When the wearable watch needs to be worn on the wrist, the two straps are buckled together to wear the wearable watch on the wrist, so that the wearable watch is in a wearing state. It can be seen that in the wearing state, the two straps are buckled together to form a ring structure of the wearing structure. For the wearable watch, the inner surface of the wearing structure refers to the side that contacts the wrist in the wearing state, and the outer surface of the wearing structure is the side opposite to the inner surface of the wearing structure. The battery and circuit structure involved in the above embodiments can be arranged in the shell of the dial.

[0256] In some embodiments, the position of the dial can be regarded as the above-mentioned top ring segment, and the strap buckle position relative to the dial of the wearable watch can be regarded as the above-mentioned bottom ring segment, the area between the top ring segment and the bottom ring segment of one strap can be regarded as the above-mentioned first side ring segment, and the area between the top ring segment and the bottom ring segment of the other strap can be regarded as the above-mentioned second side ring segment. Of course, in other embodiments, there can be other divisions. For example, with the position of the wrist as a reference, the top ring segment is in contact with the back of the wrist, the top ring segment is in contact with the belly of the wrist, the first side ring segment is in contact with the first side of the wrist, and the second side ring segment is in contact with the second side of the wrist. Based on this, the electrodes involved in the above embodiments can be set in the wearable watch with reference to the positions in the above embodiments, and will not be repeated here.

[0257] It should be noted that the electrodes arranged on the strap of the wearable watch and the circuit structure located in the dial can be realized through the position where the dial and the strap are connected.

[0258] For the wearable watch, when the wearable watch is worn on the wrist, since there are no adjacent human body parts on the wrist, when human body communication is required, prompt information needs to be configured to trigger the user to actively make the electrodes located on the outer surface of the wearable watch contact with other parts of the human body (such as the wrist of the other hand, etc.).

[0259] In the above embodiments, the description of each embodiment has its own emphasis. For the part that is not described or recorded in detail in a certain embodiment, please refer to the relevant description of other embodiments. The above embodiments are only used to illustrate the technical solution of the present application, not to limit it; although the present application is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present application, and should be included in the protection scope of the present application.

Claims

1. A wearable device with human body communication function, characterized in that: The wearable device comprises: A wearing structure, used for wearing the wearable device on a wearing part of a human body so that the wearable device is in a wearing state; A first electrode is disposed on the outer surface of the wearable structure; A second electrode is disposed on the outer surface or the inner surface of the wearable structure; Wherein, the first electrode and the second electrode are insulated from each other; When the wearable device is in the wearing state, the second electrode and the first electrode are close to or in contact with the skin of the human body, and a first communication signal is transmitted between the wearable device and the human body via the first electrode and the second electrode, so that the wearable device is in a current-coupled HBC communication mode.

2. The wearable device according to claim 1, characterized in that: The wearable device further includes a third electrode; the first electrode and the second electrode are respectively insulated from the third electrode; When the wearable device is in the wearing state, the second electrode and the first electrode are close to or in contact with the skin of the human body, and the third electrode is not in contact with or in contact with the human body. A second communication signal is transmitted between the wearable device and the human body via one of the first electrode and the second electrode and the third electrode, so that the wearable device is in a capacitive coupling HBC communication mode.

3. The wearable device according to claim 2, characterized in that: The wearable device further includes: a circuit structure disposed in the wearable structure; The circuit structure is electrically connected to the first electrode and the second electrode respectively, and the third electrode is electrically connected to the ground, and the circuit structure is used to control the first electrode and the second electrode to be used as two signal electrodes of the current coupling HBC communication mode, so that the wearable device is in the current coupling HBC communication mode; Alternatively, one of the first electrode and the second electrode is controlled to be used as a signal electrode of the capacitive coupling HBC communication mode, and the third electrode is used as a ground electrode of the capacitive coupling HBC communication mode, so that the wearable device is in the capacitive coupling HBC mode.

4. The wearable device according to claim 3, characterized in that: The electrode with higher transmission quality among the first electrode and the second electrode is used as a signal electrode in the capacitive coupling HBC communication mode, or as a positive signal electrode in the current coupling HBC communication mode.

5. The wearable device according to any one of claims 2 to 4, characterized in that: The wearable structure at least includes a first wearable structure; the outer surface of the first wearable structure is used as the outer surface of the wearable structure; the material of the first wearable structure is a conductive material or a non-conductive material.

6. The wearable device according to claim 5, characterized in that: The material of the first wearable structure is the conductive material. When the first electrode and the third electrode are both arranged on the outer surface of the first wearable structure, a gap is provided at a position of the first wearable structure between the first electrode and the third electrode to achieve insulation between the first electrode and the third electrode.

7. The wearable device according to claim 5, characterized in that: The material of the first wearable structure is the conductive material, and when the first electrode and the second electrode are both arranged on the outer surface of the first wearable structure, a gap is provided at a position of the first wearable structure between the first electrode and the second electrode to achieve insulation between the first electrode and the second electrode.

8. The wearable device according to claim 5, characterized in that: The material of the first wearable structure is the conductive material, and the first electrode, the third electrode, and the second electrode are all arranged on the outer surface of the first wearable structure. The first wearable structure has gaps at a position between the first electrode and the third electrode, a position between the second electrode and the third electrode, and a position between the first electrode and the second electrode to achieve insulation between the first electrode, the second electrode, and the third electrode.

9. The wearable device according to any one of claims 6 to 8, characterized in that: The gap is filled with an insulator.

10. The wearable device according to any one of claims 5 to 9, characterized in that: The first wearing structure has a loop segment; When the first wearable structure is made of the conductive material and the first electrode and the second electrode are arranged on the outer surface of the wearable structure, the first electrode and the second electrode are located in the ring segment of the first wearable structure; When the first wearable structure is made of the conductive material and the first electrode, the second electrode and the third electrode are arranged on the outer surface of the wearable structure, the first electrode, the second electrode and the third electrode are located in the ring segment of the first wearable structure.

11. The wearable device according to any one of claims 2 to 10, characterized in that: The wearing structure comprises a top ring segment, a bottom ring segment, a first side ring segment and a second side ring segment; The top ring segment is opposite to the bottom ring segment, the first side ring segment is one of the ring segments located between the top ring segment and the bottom ring segment, and the second side ring segment is another ring segment between the top ring segment and the bottom ring segment; The wearable structure has identification information, and the identification information is used to identify one or more of the top ring segment, the bottom ring segment, the first side ring segment, and the second side ring segment to indicate the orientation of the wearable device in the wearing state, so that the area of ​​the outer surface of the wearable structure corresponding to the top ring segment can not contact or approach the skin of the human body.

12. The wearable device according to claim 11, characterized in that: The wearable device is a wearable finger ring; the identification information includes a boss shape, and the boss shape is used to identify the top ring segment so that the top ring segment is placed on the side facing the back of the wearing finger in the wearing state.

13. The wearable device according to claim 11 or 12, characterized in that: The wearing structure comprises a first ring segment and a second ring segment; The first ring segment and the second ring segment are both distributed in the first side ring segment, the bottom ring segment and the second side ring segment; Wherein, the first electrode is arranged on the outer surface of the wearable structure in an area corresponding to the first ring segment; and the second electrode is arranged on the inner surface of the wearable structure in an area corresponding to the second ring segment.

14. The wearable device according to claim 11 or 12, characterized in that: The wearing structure comprises a third ring segment and a fourth ring segment; The third ring segment is distributed on a first side of a reference line, and the fourth ring segment is distributed on a second side of the reference line; the reference line passes through the center of the wearable device and the geometric center of the top ring segment; Wherein, the first electrode is arranged on the outer surface of the wearable structure in an area corresponding to the third ring segment; and the second electrode is arranged on the outer surface of the wearable structure in an area corresponding to the fourth ring segment.

15. The wearable device according to claim 14, characterized in that: The third ring segment is distributed on the first side ring segment and the first bottom ring segment, and the fourth ring segment is distributed on the second side ring segment and the second bottom ring segment; The first bottom ring segment is a portion of the bottom ring segment located on a first side of the reference line; and the second bottom ring segment is a portion of the bottom ring segment located on a second side of the reference line.

16. The wearable device according to any one of claims 13 to 15, characterized in that: The third electrode is arranged on the outer surface of the wearable structure in an area corresponding to the fifth ring segment, or is arranged on the inner surface of the wearable structure in an area corresponding to the fifth ring segment; Wherein, the fifth ring segment is distributed in the top ring segment.

17. The wearable device according to any one of claims 1 to 16, characterized in that: The wearable device is a wearable finger ring, a wearable wristband, or a wearable watch.

18. A wearable device with human body communication function, characterized in that: The wearable device comprises: A wearing structure, used for wearing the wearable device on a wearing part of a human body so that the wearable device is in a wearing state; A second electrode is disposed on the outer surface of the wearable structure; A third electrode is disposed on the outer surface of the wearable structure or inside the wearable structure; Wherein, the second electrode and the third electrode are insulated from each other; When the wearable device is in the wearing state, the second electrode is close to or in contact with the skin of the human body, and the third electrode is not close to or in contact with the human body. A second communication signal is transmitted between the wearable device and the human body via the second electrode and the third electrode, so that the wearable device is in a capacitive coupling HBC communication mode.

19. The wearable device according to claim 18, characterized in that: The wearable structure at least includes a first wearable structure; the outer surface of the first wearable structure is used as the outer surface of the wearable structure; the material of the first wearable structure is a conductive material or a non-conductive material.

20. The wearable device according to claim 19, characterized in that: The material of the first wearable structure is the conductive material, and when the second electrode and the third electrode are both arranged on the outer surface of the first wearable structure, a gap is provided at a position of the first wearable structure between the second electrode and the third electrode to achieve insulation between the second electrode and the third electrode.

21. The wearable device according to claim 20, characterized in that: The gap is filled with an insulator.

22. The wearable device according to any one of claims 18 to 19, characterized in that: The first wearing structure has a loop segment; When the first wearable structure is made of the conductive material and the second electrode is disposed on the outer surface of the wearable structure, the second electrode is located in the ring segment of the first wearable structure; When the first wearable structure is made of the conductive material and the second electrode and the third electrode are both arranged on the outer surface of the wearable structure, the second electrode and the third electrode are both located in the ring segment of the first wearable structure.

23. The wearable device according to any one of claims 18 to 22, characterized in that: The wearing structure comprises a top ring segment, a bottom ring segment, a first side ring segment and a second side ring segment; The top ring segment is opposite to the bottom ring segment, the first side ring segment is one of the ring segments located between the top ring segment and the bottom ring segment, and the second side ring segment is another ring segment between the top ring segment and the bottom ring segment; The wearable structure has identification information, and the identification information is used to identify one or more of the top ring segment, the bottom ring segment, the first side ring segment, and the second side ring segment to indicate the orientation of the wearable device in the wearing state, so that the area of ​​the outer surface of the wearable structure corresponding to the top ring segment can not contact or approach the skin of the human body.

24. The wearable device according to claim 23, characterized in that: The wearable device is a wearable finger ring; the identification information includes a boss shape, and the boss shape is used to identify the top ring segment so that the top ring segment is placed on the side facing the back of the wearing finger in the wearing state.

25. The wearable device according to claim 23 or 24, characterized in that: The wearing structure comprises a second ring segment and a fifth ring segment; The second ring segment is distributed in the first side ring segment, the bottom ring segment and the second side ring segment; the fifth ring segment is distributed in the top ring segment; The second electrode is arranged on the outer surface of the wearable structure in an area corresponding to the second ring segment, and the third electrode is arranged on the outer surface of the wearable structure or inside the wearable structure in an area corresponding to the fifth ring segment.

26. The wearable device according to claim 23 or 24, characterized in that: The wearable device is a wearable finger ring, a wearable wristband, or a wearable watch.

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