Knee bending electromagnetic frictional electricity self-powered wireless self-sensing device and system

Abstract

The invention discloses a knee bending electromagnetic triboelectricity self-powered wireless self-sensing device and system, and belongs to the field of self-powered wireless sensing. The knee bending electromagnetic frictional electricity self-powered wireless self-sensing device comprises a first connecting plate, a second connecting plate, a frictional electric signal generating assembly, a power generating assembly and a wireless sensing assembly, the first connecting plate is movably connected with the second connecting plate, the first connecting plate and the second connecting plate can be far away from each other or close to each other, the first connecting plate is provided with a first surface far away from the second connecting plate, and the second connecting plate is provided with a second surface far away from the first connecting plate; at least one of the first surface and the second surface is provided with a friction electric signal generating component; one of the first connecting plate and the second connecting plate is fixedly connected with the power generation assembly, the other one is in driving connection with the power generation assembly and used for driving the power generation assembly to operate, and the wireless sensing assembly is electrically connected with the friction electric signal generating assembly and the power generation assembly.

Description

Technical Field

[0001] The present application belongs to the field of self-powered wireless sensing, and specifically relates to a knee bending electromagnetic friction electric self-powered wireless self-sensing device and system. Background Art

[0002] With the development of science and technology, people are more and more aware of health, especially the health of the elderly, which is very important for a family. Usually, it is necessary to monitor the legs of the elderly, that is, to monitor the bending of the legs of the elderly. In the related art, the bending of the legs is monitored by letting the elderly wear a monitoring device on their legs. However, in the related art, the monitoring device is usually difficult to use and requires additional power supply. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a knee bending electromagnetic friction electric self-powered wireless self-sensing device and system, which at least solves the problem that it is usually difficult to use and requires additional power supply.

[0004] In a first aspect, an embodiment of the present application provides a knee bending electromagnetic triboelectric self-powered wireless self-sensing device, the knee bending electromagnetic triboelectric self-powered wireless self-sensing device comprising: a first connecting plate, a second connecting plate, a triboelectric signal generating component, a power generating component and a wireless sensing component;

[0005] The first connecting plate is movably connected to the second connecting plate, and the first connecting plate and the second connecting plate can be moved away from or close to each other, the first connecting plate has a first surface away from the second connecting plate, the second connecting plate has a second surface away from the first connecting plate, and at least one of the first surface and the second surface is provided with the triboelectric signal generating component;

[0006] One of the first connecting plate and the second connecting plate is fixedly connected to the power generation component, and the other is drivingly connected to the power generation component to drive the power generation component to operate. The wireless sensing component is electrically connected to the friction electric signal generating component and the power generation component, respectively. The first connecting plate is used to be connected to the user's thigh, and the second connecting plate is used to be connected to the user's calf. The friction electric signal generating component is used to fit the user's thigh and / or calf, and the wireless sensing component is used to collect the signal generated by the friction electric signal generating component and send the signal to the outside.

[0007] Optionally, the knee bending electromagnetic triboelectric self-powered wireless self-sensing device further comprises a rotating connector, the first connecting plate comprises a mounting portion and a connecting portion, the mounting portion is connected to the connecting portion, and the mounting portion is used to mount the triboelectric signal generating component;

[0008] The rotating connecting member includes a rotating sleeve and a rotating member, at least a part of the rotating member is embedded in the rotating sleeve, and the rotating member is fixedly connected to the rotating sleeve, the rotating sleeve is connected to the connecting portion, the power generation component is connected to the rotating member, and the power generation component is fixed to the second connecting plate;

[0009] When the first connecting plate and the second connecting plate are close to or away from each other, the first connecting plate drives the rotating sleeve and the rotating member to rotate, and the rotating member drives the power generation assembly to operate.

[0010] Optionally, a mounting hole is provided on the connecting portion, and the rotating sleeve is arranged in the mounting hole;

[0011] At least two fixing plates are arranged on the outer wall of the rotating sleeve, at least two embedding grooves are arranged on the connecting portion, the embedding grooves are communicated with the mounting hole, and one of the fixing plates is embedded in one of the embedding grooves.

[0012] Optionally, the power generation component comprises a power generation body and a rotating shaft, and the rotating shaft is connected to the power generation body via a gear assembly;

[0013] The rotating member is provided with a rotating hole, and a blocking boss is provided on the hole wall of the rotating hole. The rotating shaft is provided with a rotating groove. The rotating shaft is embedded in the rotating hole, and the blocking boss is embedded in the rotating groove.

[0014] Optionally, the second connecting plate includes a connecting plate body;

[0015] The connecting plate body is provided with an avoidance groove, the rotating connecting member is located in the avoidance groove, and there is a first gap between the rotating connecting member and the groove wall of the avoidance groove, and there is a second gap between part of the connecting portion and the groove wall of the avoidance groove, the avoidance groove is used to accommodate another part of the connecting portion, and the power generation assembly is fixed to the connecting plate body;

[0016] When the first connecting plate and the second connecting plate are close to each other, another part of the connecting portion can enter the avoidance groove, and when the first connecting plate and the second connecting plate are away from each other, another part of the connecting portion can be moved out of the avoidance groove.

[0017] Optionally, the second connecting plate further includes a mounting member;

[0018] The mounting member is fixed to a surface of the connecting plate body facing the first connecting plate, and an embedding hole is provided on the mounting member, and the power generation component is arranged in the embedding hole.

[0019] Optionally, the triboelectric signal generating component includes a first electrode layer, a dielectric layer and a second electrode layer, the first electrode layer, the dielectric layer and the second electrode layer are stacked, and at least one of the first surface and the second surface is connected to the second electrode layer;

[0020] Wherein, the first electrode layer is a flexible electrode layer.

[0021] Optionally, the knee bending electromagnetic friction electric self-powered wireless self-sensing device also includes a power management module, which is electrically connected to the power generation component and the wireless sensing component. The power management module is used to stabilize the electric energy generated by the power generation component and transfer the stabilized electric energy to the wireless sensing component.

[0022] Optionally, the knee bending electromagnetic friction electric self-powered wireless self-sensing device also includes an energy storage component, which is electrically connected to the power management module and the energy storage component is electrically connected to the wireless sensing component.

[0023] In a second aspect, an embodiment of the present application provides a knee bending electromagnetic triboelectric self-powered wireless self-sensing system, wherein the knee bending electromagnetic triboelectric self-powered wireless self-sensing system comprises a host computer and the knee bending electromagnetic triboelectric self-powered wireless self-sensing device described in any one of the first aspects above;

[0024] The host computer is wirelessly connected to the wireless sensor component.

[0025] In the embodiment of the present application, since the first connecting plate and the second connecting plate are movably connected, the first connecting plate and the second connecting plate can be moved away from or close to each other. In addition, the first connecting plate has a first surface away from the second connecting plate, and the second connecting plate has a second surface away from the first connecting plate, and at least one of the first surface and the second surface is provided with a friction electric signal generating component. Therefore, in practical applications, the first connecting plate can be connected to the user's thigh, and the second connecting plate can be connected to the user's calf, so that the friction electric signal generating component on the first connecting plate and / or the second connecting plate can contact the user's leg. When the user's leg is bent, the user's thigh and calf are close to each other, thereby driving the first connecting plate and the second connecting plate to be close to each other, and the user's leg will squeeze the friction electric signal generating component, so that the friction electric signal generating component generates a signal. Since one of the first connecting plate and the second connecting plate is fixedly connected to the power generation component, and the other is connected to the power generation component by driving, when the first connecting plate and the second connecting plate are close to each other, the connecting plate connected to the power generation component by driving can drive the starting component to run, so that the power generation component generates electrical energy. Since the wireless sensing component is electrically connected to the friction electric signal generating component and the power generating component respectively, once the first connecting plate is connected to the user's thigh and the second connecting plate is connected to the user's calf, when the user's leg is bent, the first connecting plate and the second connecting plate are close to each other, that is, the first connecting plate and the second connecting plate move relative to each other, so that the power generating component generates electrical energy, and the electrical energy can be transmitted to the wireless sensing component, so that the wireless sensing component can operate normally, and the friction electric signal generating component generates a signal and transmits the signal to the wireless sensing component, so that the wireless sensing component collects the signal generated by the friction electric signal generating component and sends the signal to the outside. That is, in the embodiment of the present application, by setting a friction electric signal generating component, a first connecting plate, a second connecting plate, a power generation component and a wireless sensor component, after the first connecting plate is connected to the user's thigh and the second connecting plate is connected to the user's calf, during the user's leg bending process, the wireless sensor component can send the signal generated by the friction electric signal generating component to the outside in real time, so that the frequency, bending angle and other parameters of the user's leg bending can be determined in real time according to the signal sent by the wireless sensor component, which is convenient for monitoring the user's leg activities, and the entire device can be self-powered, avoiding the need to set up an additional power supply, which leads to increased costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 One of the schematic diagrams showing a knee bending electromagnetic triboelectric self-powered wireless self-sensing device provided in an embodiment of the present application;

[0027] Figure 2 An exploded view of a knee bending electromagnetic triboelectric self-powered wireless self-sensing device provided in an embodiment of the present application is shown;

[0028] Figure 3 A schematic diagram showing a rotating connection member provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram showing a first connecting plate provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram showing a second connecting plate provided in an embodiment of the present application;

[0031] Figure 6 A second schematic diagram showing a knee bending electromagnetic triboelectric self-powered wireless self-sensing device provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram showing the circuit connection of a knee bending electromagnetic triboelectric self-powered wireless self-sensing device provided in an embodiment of the present application;

[0033] Figure 8 A schematic diagram showing a knee bending electromagnetic triboelectric self-powered wireless self-sensing system provided in an embodiment of the present application.

[0034] Reference numerals:

[0035] 10: first connecting plate; 11: mounting portion; 12: connecting portion; 121: mounting hole; 122: embedding groove; 101: first surface; 20: second connecting plate; 21: connecting plate body; 22: mounting member; 201: second surface; 211: avoidance groove; 221: embedding hole; 30: friction electric signal generating component; 31: first electrode layer; 32: dielectric layer; 33: second electrode layer; 40: power generation component; 41: power generation body; 42: rotating shaft; 50: wireless sensor component; 60: rotating connecting member; 61: rotating sleeve; 62: rotating member; 611: fixing plate; 621: rotating hole; 622: blocking boss; 70: power management module; 80: energy storage component; 90: host computer. DETAILED DESCRIPTION

[0036] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] like Figures 1 to 7 As shown, the knee bending electromagnetic friction electric self-powered wireless self-sensing device includes: a first connecting plate 10, a second connecting plate 20, a friction electric signal generating component 30, a power generating component 40 and a wireless sensing component 50; the first connecting plate 10 is movably connected to the second connecting plate 20, and the first connecting plate 10 and the second connecting plate 20 can be away from or close to each other, the first connecting plate 10 has a first surface 101 away from the second connecting plate 20, the second connecting plate 20 has a second surface 201 away from the first connecting plate 10, and at least one of the first surface 101 and the second surface 201 is provided with a friction electric signal generating component 30, a power generating component 40 and a wireless sensing component 50; signal generating component 30; one of the first connecting plate 10 and the second connecting plate 20 is fixedly connected to the power generating component 40, and the other is drivingly connected to the power generating component 40, so as to drive the power generating component 40 to operate; the wireless sensing component 50 is electrically connected to the friction electric signal generating component 30 and the power generating component 40 respectively; the first connecting plate 10 is used to be connected to the user's thigh, and the second connecting plate 20 is used to be connected to the user's calf; the friction electric signal generating component 30 is used to fit the user's thigh and / or calf; the wireless sensing component 50 is used to collect the signal generated by the friction electric signal generating component 30 and send the signal outward.

[0040] In the embodiment of the present application, since the first connecting plate 10 and the second connecting plate 20 are movably connected, the first connecting plate 10 and the second connecting plate 20 can be moved away from or close to each other. In addition, the first connecting plate 10 has a first surface 101 away from the second connecting plate 20, and the second connecting plate 20 has a second surface 201 away from the first connecting plate 10, and at least one of the first surface 101 and the second surface 201 is provided with a triboelectric signal generating component 30. Therefore, in practical applications, the first connecting plate 10 can be connected to the user's thigh, and the second connecting plate 20 can be connected to the user's calf, so that the triboelectric signal generating component 30 on the first connecting plate 10 and / or the second connecting plate 20 can contact the user's leg. When the user's leg is bent, the user's thigh and calf are close to each other, thereby driving the first connecting plate 10 and the second connecting plate 20 to be close to each other, and the user's leg will squeeze the triboelectric signal generating component 30, so that the triboelectric signal generating component 30 generates a signal. Since one of the first connecting plate 10 and the second connecting plate 20 is fixedly connected to the power generation component 40, and the other is drivingly connected to the power generation component 40, when the first connecting plate 10 and the second connecting plate 20 are close to each other, the connecting plate drivingly connected to the power generation component 40 can drive the starting component to operate, so that the power generation component 40 generates electric energy. Since the wireless sensor component 50 is electrically connected to the friction electric signal generating component 30 and the power generation component 40 respectively, once the first connecting plate 10 is connected to the user's thigh and the second connecting plate 20 is connected to the user's calf, when the user's leg is bent, the first connecting plate 10 and the second connecting plate 20 are close to each other, that is, the first connecting plate 10 and the second connecting plate 20 move relative to each other, so that the power generation component 40 generates electric energy, and the electric energy can be transmitted to the wireless sensor component 50, so that the wireless sensor component 50 operates normally, and the friction electric signal generating component 30 generates a signal and transmits the signal to the wireless sensor component 50, so that the wireless sensor component 50 collects the signal generated by the friction electric signal generating component 30 and sends the signal to the outside. That is, in the embodiment of the present application, by setting a friction electric signal generating component 30, a first connecting plate 10, a second connecting plate 20, a power generation component 40 and a wireless sensor component 50, after the first connecting plate 10 is connected to the user's thigh and the second connecting plate 20 is connected to the user's calf, during the user's leg bending, the wireless sensor component 50 can send the signal generated by the friction electric signal generating component 30 to the outside in real time, so that according to the signal sent by the wireless sensor component 50, the frequency, bending angle and other parameters of the user's leg bending can be determined in real time, which is convenient for monitoring the user's leg activities, and the entire device can be self-powered, avoiding the need for an additional power supply, which increases costs.

[0041] It should be noted that, in the embodiment of the present application, the friction electric signal generating component 30 can be set only on the first surface 101. In this case, it is equivalent to setting the friction electric signal generating component 30 on the first connecting plate 10, so that when the user applies the knee bending electromagnetic friction electric self-powered wireless self-sensing device, when the user's legs are bent, the user's thighs squeeze the friction electric signal generating component 30 on the first connecting plate 10; of course, the friction electric signal generating component 30 can also be set only on the second surface 201. In this case, it is equivalent to setting the friction electric signal generating component 30 on the second connecting plate 20, so that when the user applies the knee bending electromagnetic friction electric self-powered wireless self-sensing device, When the user's legs are bent, the user's calves squeeze the friction electric signal generating component 30 on the second connecting plate 20; of course, the friction electric signal generating component 30 can be set on both the first surface 101 and the second surface 201. At this time, it is equivalent to setting the friction electric signal generating component 30 on the first connecting plate 10 and also setting the friction electric signal generating component 30 on the second connecting plate 20. Therefore, when the user uses the knee bending electromagnetic friction electric self-powered wireless self-sensing device, when the user's legs are bent, the user's thighs squeeze the friction electric signal generating component 30 on the first connecting plate 10, and the user's calves squeeze the friction electric signal generating component 30 on the second connecting plate 20.

[0042] In addition, in the embodiment of the present application, a cable tie can be provided on the first connecting plate 10, and a cable tie can also be provided on the second connecting plate 20, so that when the user uses the electromagnetic friction electric self-powered wireless self-sensing device for knee bending, the first connecting plate 10 can be directly tied to the thigh through the cable tie, and the second connecting plate 20 can be tied to the calf through the cable tie, which is convenient for the user to bend the electromagnetic friction electric self-powered wireless self-sensing device for knee bending.

[0043] In addition, in the embodiment of the present application, in the first connection plate 10 and the second connection plate 20, the first connection plate 10 can be connected to the power generation component 40 by driving, and the second connection plate 20 can be fixedly connected to the power generation component 40, or the first connection plate 10 can be fixedly connected to the power generation component 40, and the second connection plate 20 can be connected to the power generation component 40 by driving. This embodiment of the present application is not limited here.

[0044] In addition, in some embodiments, Figure 2As shown, the knee bending electromagnetic friction electric self-powered wireless self-sensing device can also include a rotating connecting member 60, the first connecting plate 10 can include a mounting portion 11 and a connecting portion 12, the mounting portion 11 is connected to the connecting portion 12, and the mounting portion 11 is used to install the friction electric signal generating component 30; the rotating connecting member 60 includes a rotating sleeve 61 and a rotating member 62, at least part of the rotating member 62 is embedded in the rotating sleeve 61, and the rotating member 62 is fixedly connected to the rotating sleeve 61, the rotating sleeve 61 is connected to the connecting portion 12, the power generation component 40 is connected to the rotating member 62, and the power generation component 40 is fixed to the second connecting plate 20; when the first connecting plate 10 and the second connecting plate 20 are close to or away from each other, the first connecting plate 10 drives the rotating sleeve 61 and the rotating member 62 to rotate, and the rotating member 62 drives the power generation component 40 to operate.

[0045] Since at least a portion of the rotating member 62 is embedded in the rotating sleeve 61 , and the rotating member 62 is fixedly connected to the rotating sleeve 61 , when the rotating sleeve 61 rotates, the rotating sleeve 61 drives the rotating member 62 to rotate. Since the rotating sleeve 61 is connected to the connecting portion 12 and the power generating assembly 40 is connected to the rotating member 62, when the first connecting plate 10 and the second connecting plate 20 move away from or approach each other, the first connecting plate 10 will drive the rotating sleeve 61 to rotate, and the rotating sleeve 61 will drive the rotating member 62 to rotate, so that the rotating member 62 can drive the power generating assembly 40 to operate, and the mounting portion 11 is used to install the friction electric signal generating assembly 30, so once the friction electric signal generating assembly 30 is installed on the mounting portion 11, when the user uses the knee bending electromagnetic friction electric self-powered wireless self-sensing device, when the user's legs are bent, the user's thighs will contact the friction electric signal generating assembly 30, and the user's legs will drive the first connecting plate 10 and the second connecting plate 20 to approach each other, so that the rotating sleeve 61 and the rotating member 62 rotate, so that the rotating member 62 drives the power generating assembly 40 to operate. That is, by setting a rotating connecting member 60 including a rotating sleeve 61 and a rotating member 62, and the connecting part 12 is connected to the rotating sleeve 61, the rotating member 62 is connected to the power generation component 40, and the power generation component 40 is fixed to the second connecting plate 20, the first connecting plate 10 can be movably connected to the second connecting plate 20 through the rotating member 62, the rotating sleeve 61 and the power generation component 40, and the first connecting plate 10 is drivingly connected to the power generation component 40, and the second connecting plate 20 is fixedly connected to the power generation component 40, so that the power generation component 40 can be operated when the user's legs are bent.

[0046] It should be noted that, in the embodiment of the present application, the rotating member 62 and the rotating sleeve 61 can be clearance-matched, so that the rotating member 62 and the rotating sleeve 61 are fixedly connected. Of course, the rotating member 62 and the rotating sleeve 61 can also be fixedly connected in other ways, for example, the rotating member 62 can also be welded to the rotating sleeve 61, so that the rotating member 62 and the rotating sleeve 61 are fixedly connected; for another example, the rotating member 62 and the rotating sleeve 61 are connected by bolts, so that the rotating member 62 and the rotating sleeve 61 are fixedly connected. This embodiment of the present application is not limited here.

[0047] In addition, in some embodiments, Figure 2 , Figure 3 and Figure 4 As shown, a mounting hole 121 is provided on the connecting portion 12, and the rotating sleeve 61 is provided in the mounting hole 121; at least two fixing plates 611 are provided on the outer wall of the rotating sleeve 61, and at least two embedding grooves 122 are provided on the connecting portion 12, and the embedding grooves 122 are connected to the mounting hole 121, and a fixing plate 611 is embedded in one of the embedding grooves 122.

[0048] Since the connection part 12 is provided with a mounting hole 121, when assembling the knee bending electromagnetic friction electric self-powered wireless self-sensing device, the rotating sleeve 61 can be directly set in the mounting hole 121. In addition, at least two embedding grooves 122 are provided on the connection part 12, and the embedding grooves 122 are connected to the mounting hole 121. At least two fixing plates 611 are provided on the outer wall of the rotating sleeve 61, so that one fixing plate 611 can be embedded in one embedding groove 122, so that when the first connecting plate 10 and the second connecting plate 20 are close to or away from each other, the connection part 12 can drive the rotating sleeve 61 to rotate through the fixing plate 611, so that the rotating sleeve 61 drives the rotating member 62 to rotate, and then the rotating member 62 drives the power generation component 40 to operate. That is, by providing the fixing plate 611 and providing the embedding groove 122 on the connection part 12, it is convenient for the first connecting plate 10 to drive the rotating sleeve 61 to rotate.

[0049] It should be noted that the outer wall of the rotating sleeve 61 and the at least two fixing plates 611 may be welded to each other, and of course, the rotating sleeve 61 and the at least two fixing plates 611 may also be an integrated structure. This embodiment of the present application does not limit this.

[0050] In addition, in the embodiment of the present application, the number of the fixing plates 611 can be set according to actual needs, for example, the number of the fixing plates 611 is two, and for another example, the number of the fixing plates 611 is three. This is not limited in the embodiment of the present application. The number of the embedding grooves 122 can be equal to the number of the fixing plates 611. In addition, at least two fixing plates 611 can be spaced apart and distributed along the circumferential direction of the rotating sleeve 61.

[0051] In addition, in some embodiments, Figure 2 and Figure 3 As shown, the power generation component 40 has a power generation body 41 and a rotating shaft 42, and the rotating shaft 42 is connected to the power generation body 41 through a gear assembly; a rotating hole 621 is provided on the rotating member 62, and a blocking boss 622 is provided on the hole wall of the rotating hole 621, and a rotating groove is provided on the rotating shaft 42, the rotating shaft 42 is embedded in the rotating hole 621, and the blocking boss 622 is embedded in the rotating groove.

[0052] Since the rotating member 62 is provided with a rotating hole 621, the rotating shaft 42 can be embedded in the rotating hole 621, so that the rotating member 62 is connected to the power generation component 40. Since the hole wall of the rotating hole 621 is provided with a blocking boss 622, and the rotating shaft 42 is provided with a rotating groove, when the rotating shaft 42 is embedded in the rotating hole 621, the blocking boss 622 can be embedded in the rotating groove at the same time, so that when the rotating sleeve 61 drives the rotating member 62 to rotate, the rotating member 62 can drive the blocking boss 622 to rotate, so that the blocking boss 622 drives the groove wall of the rotating groove to rotate, so that the rotating shaft 42 rotates, that is, the rotating member 62 drives the rotating shaft 42 to rotate through the blocking boss 622, so that the gear assembly rotates and then the power generation body 41 runs to generate electricity. That is, by setting a blocking boss 622 on the hole wall of the rotating hole 621 and setting a rotating groove on the rotating shaft 42, after the rotating shaft 42 is embedded in the rotating hole 621, the rotating member 62 can drive the rotating shaft 42 to rotate, so that the power generation component 40 can operate and generate electricity.

[0053] It should be noted that the number of blocking bosses 622 on the hole wall of the rotating hole 621 can be set according to actual needs. For example, the number of blocking bosses 622 is 1, and for another example, the number of blocking bosses 622 is 2. In this regard, the embodiment of the present application is not limited here. Among them, when the number of blocking bosses 622 is multiple, the multiple blocking bosses 622 can be distributed at intervals along the circumferential direction of the rotating hole 621. In addition, the blocking boss 622 can extend along the axial direction of the rotating hole 621. In addition, the number of rotating grooves is equal to the number of blocking bosses 622.

[0054] In addition, in the embodiment of the present application, a blocking groove can be provided on the hole wall of the rotating hole 621, and a rotating boss can be provided on the outer wall of the rotating shaft 42. When the rotating shaft 42 is embedded in the rotating hole 621, the rotating boss can be embedded in the blocking groove. Therefore, when the rotating member 62 rotates, the rotating member 62 drives the blocking groove to rotate, and the groove wall of the blocking groove can drive the rotating boss to rotate, thereby causing the rotating shaft 42 to rotate.

[0055] In addition, the gear assembly may include a plurality of gears, and the gear assembly may be frequency-upgraded, that is, by providing the gear assembly, the rotation speed of the rotating shaft 42 may be increased through the gear assembly, so that the rotation speed transmitted to the power generation body 41 is greater than the rotation speed of the rotating shaft 42. The number of gears may be set according to actual needs, and the specific structure of the gear assembly may refer to the structure of a gear assembly with frequency-upgrade function in the related art, which will not be described in detail here.

[0056] In addition, in some embodiments, Figure 2 , Figure 4 and Figure 5 As shown, the second connecting plate 20 includes a connecting plate body 21; an avoidance groove 211 is provided on the connecting plate body 21, the rotating connecting member 60 is located in the avoidance groove 211, and there is a first gap between the rotating connecting member 60 and the groove wall of the avoidance groove 211, and there is a second gap between the partial connecting portion 12 and the groove wall of the avoidance groove 211, the avoidance groove 211 is used to accommodate another part of the connecting portion 12, and the power generation component 40 is fixed to the connecting plate body 21; when the first connecting plate 10 and the second connecting plate 20 are close to each other, the connecting portion 12 can enter the avoidance groove 211, and when the first connecting plate 10 and the second connecting plate 20 are away from each other, the connecting portion 12 can be moved out of the avoidance groove 211.

[0057] Since the connecting plate body 21 is provided with an avoidance groove 211, the rotating connecting member 60 is located in the avoidance groove 211, and there is a first gap between the rotating connecting member 60 and the groove wall of the avoidance groove 211, the rotating connecting member 60 can rotate relative to the avoidance groove 211 after being subjected to force, thereby preventing the rotation of the rotating connecting member 60 from being affected. Since there is a second gap between the partial avoidance connection portion 12 and the groove wall of the avoidance groove 211, the partial connection portion 12 can rotate relative to the avoidance groove 211 when subjected to force, thereby preventing the rotation of the connection portion 12 from being affected. Therefore, when a user uses the knee bending electromagnetic friction electric self-powered wireless self-sensing device, once the user connects the first connecting plate 10 to the thigh and the second connecting plate 20 to the calf, during the process of the user's leg bending, the connecting portion 12 can rotate relative to the second connecting plate 20, and the first connecting plate 10 and the second connecting plate 20 are close to or away from each other. Furthermore, when the first connecting plate 10 and the second connecting plate 20 are close to each other, another part of the connecting portion 12 can enter the avoidance groove 211, so that the first connecting plate 10 and the second connecting plate 20 can fit together, and ensure that when the user's legs are bent, when the user's thighs and calves fit together as much as possible, the first connecting plate 10 and the second connecting plate 20 are as close as possible to each other, thereby avoiding the problem that the electromagnetic friction electric self-powered wireless self-sensing device due to knee bending affects the bending of the user's legs; when the first connecting plate 10 and the second connection are away from each other, another part of the connecting portion 12 can be moved out of the avoidance groove 211, and the power generation component 40 is fixed to the connecting plate body 21, which can also ensure that when the first connecting plate 10 and the second connecting plate 20 are close to or away from each other, the power generation component 40 will not block the first connecting plate 10 and the second connecting plate 20, thereby ensuring that the first connecting plate 10 and the second connecting plate 20 are easy to move away from or approach each other.

[0058] It should be noted that when the rotating connection member 60 includes the rotating sleeve 61 and the rotating member 62 , a first gap is provided between the end of the rotating member 62 that is not embedded in the rotating sleeve 61 and the groove wall of the avoidance groove 211 .

[0059] In addition, in some embodiments, Figure 2 and Figure 5 As shown, the second connecting plate 20 further includes a mounting member 22 ; the mounting member 22 is fixed to the surface of the connecting plate body 21 facing the first connecting plate 10 , and an embedding hole 221 is provided on the mounting member 22 , and the power generation component 40 is disposed in the embedding hole 221 .

[0060] Since the mounting member 22 is fixed to the surface of the connecting plate body 21 facing the first connecting plate 10, and an embedding hole 221 is provided on the mounting member 22, when assembling the knee bending electromagnetic friction electric self-powered wireless self-sensing device, the power generation component 40 can be directly set in the embedding hole 221, so that the knee bending electromagnetic friction electric self-powered wireless self-sensing device can be assembled more simply.

[0061] It should be noted that the mounting member 22 can be an integrated structure with the connecting plate body 21, so that the second connecting plate 20 is stronger. Of course, the mounting member 22 can also be connected to the connecting plate body 21 by welding, which is not limited in this embodiment of the present application.

[0062] In addition, in the embodiment of the present application, the power generation component 40 can be fixed in the embedding hole 221. Specifically, the power generation component 40 can be bonded in the embedding hole 221 by adhesive. Of course, the power generation component 40 can also be fixed in the embedding hole 221 by fasteners such as bolts and pins. This embodiment of the present application is not limited here.

[0063] In addition, in some embodiments, Figure 2 As shown, the friction electric signal generating component 30 includes a first electrode layer 31, a dielectric layer 32 and a second electrode layer 33, the first electrode layer 31, the dielectric layer 32 and the second electrode layer 33 are stacked, and at least one of the first surface 101 and the second surface 201 is connected to the second electrode layer 33; wherein the first electrode layer 31 is a flexible electrode layer.

[0064] Since the first electrode layer 31, the dielectric layer 32 and the second electrode layer 33 are stacked, and at least one of the first surface 101 and the second surface 201 is connected to the second electrode layer 33, when the user uses the electromagnetic friction electric self-powered wireless self-sensing device with knee bending, the user's legs will squeeze the first electrode layer 31, so that the first electrode layer 31, the dielectric layer 32 and the second electrode layer 33 can generate signals and transmit them to the wireless sensing component 50. In addition, the first electrode layer 31 is a flexible electrode layer, which can ensure that the user's legs feel more comfortable when contacting the first electrode layer 31, thereby improving the user's experience.

[0065] It should be noted that the flexible electrode layer may be a silicone electrode layer. In addition, the dielectric layer 32 and the second electrode layer 33 may also be flexible layers, so that when the user's legs contact the triboelectric signal generating assembly 30, the user may feel more comfortable and improve the user experience.

[0066] In addition, in some embodiments, Figure 7 As shown, the knee bending electromagnetic friction electric self-powered wireless self-sensing device also includes a power management module 70, which is electrically connected to the power generation component 40, and the power management module 70 is electrically connected to the wireless sensing component 50. The power management module 70 is used to stabilize the electric energy generated by the power generation component 40, and transmit the stabilized electric energy to the wireless sensing component 50.

[0067] Since the power management module 70 is electrically connected to the power generation component 40, and the power management module 70 is electrically connected to the wireless sensor component 50, when the user uses the knee bending electromagnetic friction electric self-powered wireless self-sensing device, once the user's leg is bent, the power generation component 40 can be driven to run, so that the power generation component 40 generates electric energy, and the electric energy generated by the power generation component 40 can be transmitted to the power management module 70, and the power management module 70 can stabilize the electric energy generated by the power generation component 40, and transmit the stabilized electric energy to the wireless sensor component 50, so as to ensure that the wireless sensor component 50 receives a relatively stable voltage and ensures a relatively stable operation of the wireless sensor component 50. That is, by setting the power management module 70, it is possible to ensure a relatively stable operation of the wireless sensor component 50, and then the wireless sensor component 50 can send signals to the outside relatively stably.

[0068] It should be noted that the undervoltage lockout voltage range of the power management module 70 can be 3V to 8V. Undervoltage lockout means that when the input voltage is lower than a certain value, the power management module 70 does not work and is in a protection state. Of course, the undervoltage lockout voltage range of the power management module 70 can also be other numerical ranges, which is not limited in the embodiments of the present application.

[0069] In addition, in some embodiments, Figure 7 As shown, the knee bending electromagnetic friction electric self-powered wireless self-sensing device also includes an energy storage component 80, which is electrically connected to the power management module 70, and the energy storage component 80 is electrically connected to the wireless sensing component 50.

[0070] Since the energy storage component 80 is electrically connected to the power management module 70, and the energy storage component 80 is electrically connected to the wireless sensor component 50, the power management module 70 can also transfer electrical energy to the energy storage component 80, so that the energy storage component 80 can store the electrical energy, and then transfer the stored electrical energy to the wireless sensor component 50, so that the wireless sensor component 50 can operate normally.

[0071] It should be noted that the energy storage component 80 may include but is not limited to energy storage capacitors, batteries, etc.

[0072] The present application embodiment provides a knee bending electromagnetic triboelectric self-powered wireless self-sensing system, such as Figure 8 As shown, the knee bending electromagnetic friction electric self-powered wireless self-sensing system includes a host computer 90 and a knee bending electromagnetic friction electric self-powered wireless self-sensing device in any of the above embodiments; the host computer 90 is wirelessly connected to the wireless sensing component 50.

[0073] Among them, the upper computer 90 is wirelessly connected to the wireless sensor component 50, so that the upper computer 90 can receive the signal transmitted by the wireless sensor component 50, so that when the user uses the electromagnetic friction electric self-powered wireless self-sensing device for knee bending, the upper computer 90 can receive the signal transmitted by the wireless sensor component 50 in real time. The upper computer 90 can determine the user's leg bending frequency, bending angle and other parameters based on the received signal, and monitor the user in real time.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A knee bending electromagnetic triboelectric self-powered wireless self-sensing device, characterized in that: The knee bending electromagnetic triboelectric self-powered wireless self-sensing device comprises: a first connecting plate, a second connecting plate, a triboelectric signal generating component, a power generating component and a wireless sensing component; The first connecting plate is movably connected to the second connecting plate, and the first connecting plate and the second connecting plate can be moved away from or close to each other, the first connecting plate has a first surface away from the second connecting plate, the second connecting plate has a second surface away from the first connecting plate, and at least one of the first surface and the second surface is provided with the triboelectric signal generating component; One of the first connecting plate and the second connecting plate is fixedly connected to the power generation component, and the other is drivingly connected to the power generation component to drive the power generation component to operate. The wireless sensing component is electrically connected to the friction electric signal generating component and the power generation component, respectively. The first connecting plate is used to be connected to the user's thigh, and the second connecting plate is used to be connected to the user's calf. The friction electric signal generating component is used to fit the user's thigh and / or calf, and the wireless sensing component is used to collect the signal generated by the friction electric signal generating component and send the signal to the outside.

2. The knee bending electromagnetic friction electric self-powered wireless self-sensing device according to claim 1, characterized in that: The knee bending electromagnetic triboelectric self-powered wireless self-sensing device further comprises a rotating connecting member, wherein the first connecting plate comprises a mounting portion and a connecting portion, wherein the mounting portion is connected to the connecting portion, and the mounting portion is used to mount the triboelectric signal generating component; The rotating connecting member includes a rotating sleeve and a rotating member, at least a part of the rotating member is embedded in the rotating sleeve, and the rotating member is fixedly connected to the rotating sleeve, the rotating sleeve is connected to the connecting portion, the power generation component is connected to the rotating member, and the power generation component is fixed to the second connecting plate; When the first connecting plate and the second connecting plate are close to or away from each other, the first connecting plate drives the rotating sleeve and the rotating member to rotate, and the rotating member drives the power generation assembly to operate.

3. The knee bending electromagnetic friction electric self-powered wireless self-sensing device according to claim 2, characterized in that: The connecting portion is provided with a mounting hole, and the rotating sleeve is arranged in the mounting hole; At least two fixing plates are arranged on the outer wall of the rotating sleeve, at least two embedding grooves are arranged on the connecting portion, the embedding grooves are communicated with the mounting hole, and one of the fixing plates is embedded in one of the embedding grooves.

4. The knee bending electromagnetic friction electric self-powered wireless self-sensing device according to claim 2, characterized in that: The power generation assembly comprises a power generation body and a rotating shaft, and the rotating shaft is connected to the power generation body via a gear assembly; The rotating member is provided with a rotating hole, and a blocking boss is provided on the hole wall of the rotating hole. The rotating shaft is provided with a rotating groove. The rotating shaft is embedded in the rotating hole, and the blocking boss is embedded in the rotating groove.

5. The knee bending electromagnetic friction electric self-powered wireless self-sensing device according to claim 2, characterized in that: The second connecting plate includes a connecting plate body; The connecting plate body is provided with an avoidance groove, the rotating connecting member is located in the avoidance groove, and there is a first gap between the rotating connecting member and the groove wall of the avoidance groove, and there is a second gap between part of the connecting portion and the groove wall of the avoidance groove, the avoidance groove is used to accommodate another part of the connecting portion, and the power generation assembly is fixed to the connecting plate body; When the first connecting plate and the second connecting plate are close to each other, another part of the connecting portion can enter the avoidance groove, and when the first connecting plate and the second connecting plate are away from each other, another part of the connecting portion can be moved out of the avoidance groove.

6. The knee bending electromagnetic friction electric self-powered wireless self-sensing device according to claim 1, characterized in that: The second connecting plate also includes a mounting member; The mounting member is fixed to a surface of the connecting plate body facing the first connecting plate, and an embedding hole is provided on the mounting member, and the power generation component is arranged in the embedding hole.

7. The knee bending electromagnetic triboelectric self-powered wireless self-sensing device according to claim 1, characterized in that: The triboelectric signal generating component includes a first electrode layer, a dielectric layer and a second electrode layer, wherein the first electrode layer, the dielectric layer and the second electrode layer are stacked, and at least one of the first surface and the second surface is connected to the second electrode layer; Wherein, the first electrode layer is a flexible electrode layer.

8. The knee bending electromagnetic friction electric self-powered wireless self-sensing device according to claim 1, characterized in that: The knee bending electromagnetic friction electric self-powered wireless self-sensing device also includes a power management module, which is electrically connected to the power generation component and the wireless sensing component. The power management module is used to stabilize the electric energy generated by the power generation component and transmit the stabilized electric energy to the wireless sensing component.

9. The knee bending electromagnetic triboelectric self-powered wireless self-sensing device according to claim 8, characterized in that: The knee bending electromagnetic friction electric self-powered wireless self-sensing device also includes an energy storage component, which is electrically connected to the power management module and the energy storage component is electrically connected to the wireless sensing component.

10. A knee bending electromagnetic triboelectric self-powered wireless self-sensing system, characterized in that: The knee bending electromagnetic triboelectric self-powered wireless self-sensing system comprises a host computer and a knee bending electromagnetic triboelectric self-powered wireless self-sensing device as described in any one of claims 1 to 9; The host computer is wirelessly connected to the wireless sensor component.

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