Physiological signal acquisition device and wearable device

Abstract

The present specification provides a physiological signal acquisition device, comprising: a first insulating film, at least two first guide grooves are arranged on the first insulating film along a first direction, and the at least two first guide grooves are insulated; a first moisture absorbing member, for absorbing moisture, the first moisture absorbing member is arranged in the at least two first guide grooves; and at least two electrodes, for contacting the skin and acquiring physiological signals, the at least two electrodes cover the at least two first guide grooves and are attached to the surface of the first moisture absorbing member close to the skin.

Description

Technical Field

[0001] This application relates to the field of physiological signal acquisition, and in particular to physiological signal acquisition devices and wearable devices. Background Technology

[0002] During human movement, physiological signal acquisition may be affected by sweat, which can cause abnormal electrode contact, leading to reduced or inaccurate signal acquisition. Therefore, it is necessary to develop a physiological signal acquisition device that can accurately acquire physiological signals even in humid or water-soaked environments. Summary of the Invention

[0003] This specification provides a physiological signal acquisition device, comprising: a first insulating film having at least two first guide grooves disposed along a first direction, the at least two first guide grooves being insulated from each other; a first adsorption element for absorbing moisture, the at least two first guide grooves containing the first adsorption element; and at least two electrodes for contacting the skin and acquiring physiological signals, the at least two electrodes covering the at least two first guide grooves and attached to the surface of the first adsorption element near the skin.

[0004] In some embodiments, the physiological signal acquisition device further includes at least one second guide groove disposed along the first direction, wherein each of the at least one second guide groove is located between two adjacent first guide grooves in the at least two first guide grooves, and a second adsorption element is provided in the at least one second guide groove.

[0005] In some embodiments, the second adsorption element is made of the same material as the first adsorption element.

[0006] In some embodiments, the physiological signal acquisition device further includes an insulating water-conducting layer for guiding moisture from the skin surface away from the skin. The insulating water-conducting layer covers the at least one second guide groove and is attached to the surface of the second adsorption member close to the skin.

[0007] In some embodiments, the insulating water-conducting layer in each second guide channel does not contact the sidewall of the second guide channel.

[0008] In some embodiments, the sidewall of each of the at least two first guide grooves has an approximately Y-shaped cross-section perpendicular to a third direction, and the third direction is perpendicular to the plane containing the first direction and the second direction.

[0009] In some embodiments, the first insulating film is a mesh structure.

[0010] In some embodiments, the physiological signal acquisition device further includes a second insulating membrane on the side of the physiological signal acquisition device away from the skin.

[0011] In some embodiments, the second insulating film is a mesh structure.

[0012] In some embodiments, the material of the first insulating film or the second insulating film includes at least one of the following: rubber, polymer, or silicone.

[0013] In some embodiments, the physiological signal acquisition device further includes a modified fabric for preventing absorbed moisture from being transversely conducted along a first direction, the modified fabric being located on the side of the physiological signal acquisition device away from the skin.

[0014] In some embodiments, the at least two electrodes include conductive fabric electrodes that allow moisture to permeate and be absorbed by the first absorbent.

[0015] In some embodiments, the material of the first absorbent includes a sponge or a quick-drying material.

[0016] In some embodiments, the first direction is parallel to the surface of the skin.

[0017] In some embodiments, the physiological signal acquisition device further includes an anti-slip strip disposed on a first side of the physiological signal acquisition device, the first side being one side of the physiological signal acquisition device along the first direction, the anti-slip strip serving to prevent slipping and prevent water from flowing along the first direction.

[0018] In some embodiments, the physiological signal acquisition device further includes a channel disposed on a second side of the physiological signal acquisition device, the second side being the side of the physiological signal acquisition device facing a third direction, the channel being used to guide water flow in a first direction.

[0019] This specification provides a wearable device, including the physiological signal acquisition device described in any embodiment of this specification.

[0020] The physiological signal acquisition device described in some embodiments of this specification, through structural design and material selection, makes it difficult for the electrodes to conduct even when wet with sweat or water, thereby improving the accuracy of the physiological signal acquisition device in measuring physiological signals. Attached Figure Description

[0021] This application will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0022] Figure 1 This is a schematic diagram of the physiological signal acquisition device according to some embodiments shown in this specification;

[0023] Figure 2 This is a schematic diagram comparing physiological signals collected when the impedance between electrodes differs according to some embodiments shown in this specification.

[0024] Figure 3A This is a top view of an exemplary physiological signal acquisition device shown in some embodiments of this specification;

[0025] Figure 3B This is a cross-sectional view of an exemplary physiological signal acquisition device shown in some embodiments of this specification, perpendicular to a third direction;

[0026] Figure 4A This is a top view of an exemplary physiological signal acquisition device shown in some embodiments of this specification;

[0027] Figure 4B This is a cross-sectional view of an exemplary physiological signal acquisition device shown in some embodiments of this specification, perpendicular to a third direction;

[0028] Figure 5 This is a cross-sectional view of an exemplary physiological signal acquisition device shown in some embodiments of this application along a direction perpendicular to a third party; and

[0029] Figure 6 This is a top view of an exemplary physiological signal acquisition device according to some embodiments of this application. Detailed Implementation

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0031] It should be understood that the terms “system,” “device,” “unit,” and / or “module” used herein are one way to distinguish different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0032] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0033] Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0034] This specification provides a physiological signal acquisition device. In some embodiments, the physiological signal acquisition device includes: a first insulating film, on which at least two first guide grooves are disposed along a first direction, the at least two first guide grooves being insulated from each other; a first adsorption element for absorbing moisture, the first adsorption element being disposed in the at least two first guide grooves; and at least two electrodes for contacting the skin and acquiring physiological signals, the at least two electrodes covering the at least two first guide grooves and attached to the surface of the first adsorption element near the skin. Based on the above structure, by draining and absorbing sweat generated during human movement, multiple electrodes are prevented from becoming connected due to the conductivity of sweat, avoiding abnormal reduction or inaccuracy of physiological signals, thus achieving accurate acquisition of physiological signals during human movement. This physiological signal acquisition device can be connected to a wearable device by means of adhesive, clips, Velcro, sewing, pressing, etc., and thus fixed to the surface of human skin, acquiring physiological signals through electrodes.

[0035] Figure 1 This is a schematic diagram illustrating the principle of a physiological signal acquisition device based on some embodiments shown in this specification. For example... Figure 1 As shown, in a physiological signal acquisition scenario, the physiological signal acquisition model 100 may include a physiological signal generation area 110, a skin tissue area 120, a skin-electrode contact area 130, and an acquisition circuit area 140.

[0036] The physiological signal generation area 110 can be a region composed of the dermis and tissues within it. For example, the physiological signal generation area 110 may include tissues such as fat and muscle. During human movement, these tissues can generate physiological signals. These physiological signals may include electromyography (EMG) signals, surface electromyography signals, etc. In some embodiments, such as... Figure 1As shown, the physiological signal generation area 110 may include impedances R2 and R3 perpendicular to the skin surface, and impedance R1 parallel to the skin surface. R2 and R3 are related to fat thickness, dermal thickness, etc., while R1 is related to the distance between the two electrodes. In some embodiments, when the electrode distance remains constant, the greater the fat thickness, the larger R2 and R3 become. Due to the voltage divider effect, the physiological signal entering the skin tissue area 120 decreases.

[0037] The skin tissue region 120 can be a region composed of tissue from the human epidermis. For example, the skin tissue region 120 may include tissues such as the stratum corneum. In some embodiments, the skin tissue region 120 may include impedances R4 and R5 perpendicular to the skin surface, and impedance Rs parallel to the skin surface. R4 and R5 are related to the thickness of the stratum corneum, and Rs is related to the distance between the electrodes. Since the thickness of the stratum corneum is much smaller than the distance between the two electrodes, R4 and R5 can be ignored, and the partial pressure effect can be neglected. However, when sweat or other moisture causes a water film to form between the two electrodes, Rs will abnormally decrease, resulting in a reduction in the partial pressure of Rs. In this case, the partial pressure effect of R4 and R5 cannot be ignored, and the intensity of the acquired physiological signal will decrease accordingly.

[0038] The skin-electrode contact area 130 can be an area composed of skin surface tissue and components in contact with the electrode. For example, the skin-electrode contact area 130 can be an area composed of hair, sweat, other impurities, air, and the electrode. In some embodiments, the skin-electrode contact area 130 may include impedances R6 and R7 perpendicular to the skin surface and impedance Re parallel to the skin surface. R6 and R7 are the contact impedances between the skin and the electrode, and Re is the impedance between the electrodes. When sweat or other moisture causes a conductive path to form between the two electrodes, Re will abnormally decrease, resulting in a reduction in the partial voltage of Re. At this time, the intensity of the acquired physiological signal will be significantly reduced, or even impossible to acquire.

[0039] Figure 2 This is a schematic diagram comparing physiological signals collected when the impedances between electrodes differ, as shown in some embodiments of this specification. Figure 2 As shown, electromyographic (EMG) signals of the left biceps brachii were acquired using electrodes with different impedances. When the impedance between the electrodes was 1 MΩ, 80 kΩ, and 16 kΩ, the acquired EMG signals gradually decreased as the impedance between the electrodes decreased. Therefore, the conductivity between the two electrodes may affect the acquisition of physiological signals.

[0040] The acquisition circuit area 140 may be a region comprised of components for acquiring and processing physiological signals. For example, the acquisition circuit area 140 may include components such as differential amplifiers, high-pass filters, low-pass filters, and controllers. In some embodiments, the acquisition circuit area 140 may process the acquired electromyographic signals and generate parameters that reflect the physiological signals.

[0041] Figure 3A This is a top view of an exemplary physiological signal acquisition device 300 shown in some embodiments of this specification; Figure 3B This is a cross-sectional view of an exemplary physiological signal acquisition device 300 shown in some embodiments of this specification, perpendicular to a third direction.

[0042] In some embodiments, the first direction may be parallel to the skin surface in contact with the physiological signal acquisition device 300. For example, for a physiological signal acquisition device 300 that acquires electromyographic signals, the first direction may refer to the extension direction of the measured muscle fibers. In some embodiments, the second direction may be perpendicular to the skin surface, i.e., the second direction is perpendicular to the first direction. The plane containing the third direction and the first direction may be parallel to the skin surface in contact with the physiological signal acquisition device 300, and the third direction may be perpendicular to the first direction. For example, for a physiological signal acquisition device 300 that acquires electromyographic signals, the third direction may be perpendicular to the extension direction of the measured muscle fibers.

[0043] like Figure 3A and Figure 3B As shown, the physiological signal acquisition device 300 may include a first insulating film 310, a first adsorption member 320, and at least two electrodes 330. In some embodiments, at least two first guide grooves 311 may be provided on the first insulating film 310 along a first direction, and the at least two first guide grooves 311 are insulated from each other.

[0044] In some embodiments, the at least two first guide grooves 311 are provided with the first adsorption element 320, which can be used to absorb moisture. In some embodiments, the at least two electrodes 330 can cover the at least two first guide grooves 311 and be attached to the surface of the first adsorption element 320 near the skin. The at least two electrodes 330 are used to contact the user's skin and collect physiological signals. In some embodiments, the physiological signals can be signals reflecting muscle movement. For example, physiological signals can include electromyography (EMG) signals, surface electromyography (SEM) signals, etc. For the sake of simplicity, this case uses two first guide grooves 311 and two electrodes 330 as an example. It should be understood that the number of first guide grooves 311 and electrodes 330 can be any number greater than two, and is not limited here.

[0045] In some embodiments, the first insulating film 310 may be an insulating element made of an insulating and waterproof material, used to form at least two mutually insulated first guide grooves 311, so as to place an electrode 330 in each first guide groove 311 to prevent conduction between at least two electrodes 330. In some embodiments, the material of the first insulating film 310 may include rubber, polymer, silicone, or any combination thereof. In some embodiments, in order to improve the breathability and softness of the physiological signal acquisition device 300, the first insulating film 310 may be a mesh structure. The pores of each mesh in the mesh structure may extend along a second direction. In some embodiments, the second direction may be perpendicular to the skin surface, that is, the second direction is perpendicular to the first direction. For example, the mesh structure of the first insulating film 310 may include a uniformly distributed mesh, and the pores of each mesh may extend along the second direction. The mesh structure can achieve breathability and increase softness, while moisture (e.g., sweat) can flow through the mesh structure along the second direction to prevent moisture from flowing along the first direction and forming a conductive path between at least two electrodes 330.

[0046] The first guide groove 311 may be a groove for accommodating the first adsorption element 320 and / or at least two electrodes 330.

[0047] The first absorbent 320 may be a component for absorbing moisture. In some embodiments, the material of the first absorbent may include a sponge or a quick-drying material. Exemplary quick-drying materials may include polyester fiber, water-absorbing modified polyester fiber, polypropylene fiber, Coolmax fiber, Mony-Dry, etc., or any combination thereof. In some embodiments, the first absorbent 320 may be disposed in at least two first guide grooves 311 for absorbing moisture and further guiding the moisture to flow in a second direction. In some embodiments, the first absorbent 320 in each first guide groove 311 may be in direct contact with one of the at least two electrodes 330. When the at least two electrodes 330 contact the skin to collect the user's physiological signals, the first absorbent 320 may provide a certain pressure to the at least two electrodes 330, so that the at least two electrodes 330 are in close contact with the skin. In some embodiments, the first absorbent 320 may also have water absorption and moisture storage capabilities. When the first adsorbent 320 absorbs and stores moisture (e.g., sweat from the skin surface), the moistened first adsorbent 320 can continuously provide a certain amount of moisture to at least two electrodes 330, ensuring good conductivity between the at least two electrodes 330 and the skin, thereby improving the connectivity between the physiological signal acquisition device 300 and the skin. In some embodiments, the first adsorbent 320 may also have water absorption and quick-drying functions. When there is a lot of moisture, the first adsorbent 320 can absorb the moisture and evaporate it to avoid the formation of a conductive path between the at least two electrodes 330 due to excessive moisture.

[0048] At least two electrodes 330 may be components for acquiring physiological signals. For example, when the physiological signal acquisition device 300 acquires electromyographic signals, the different forces exerted at different muscle locations result in different potentials acquired by the at least two electrodes 330 located at different muscle locations. Therefore, a potential difference is formed between the at least two electrodes 330, and this potential difference is used to generate parameters characterizing the physiological signal. In some embodiments, the materials of the at least two electrodes 330 may be materials with good electrical conductivity, such as copper or graphite. In some embodiments, to ensure good contact between the at least two electrodes 330 and the skin, and to provide conductivity and breathability, the at least two electrodes 330 may include conductive fabric electrodes. In some embodiments, the at least two electrodes 330 may cover the at least two first guide grooves 311 and be attached to the surface of the first adsorption member 320 near the skin. When the conductive fabric electrodes (i.e., the at least two electrodes 330) come into contact with the skin, the conductive fabric electrodes allow moisture to permeate and be absorbed by the first adsorption member 320. In some embodiments, the conductive fabric electrodes may include multiple micropores for retaining a small amount of moisture to enhance the electrical contact between at least two electrodes 330 and the skin, while allowing excess moisture to pass through the micropores into the first absorbent 320 for absorption. In some embodiments, at least two electrodes 330 may be connected to a terminal device via a data interface to transmit acquired physiological signals to the terminal device. Exemplary terminal devices may include medical devices, computers, mobile phones, wearable devices, etc.

[0049] In some embodiments, to prevent excessive moisture, a conductive path is formed between the at least two electrodes 330 on the surface of the skin in contact with the at least two electrodes 330. The thickness of the first insulating film 310 located between any two adjacent electrodes 330 can be greater than or equal to the sum of the thicknesses of the electrodes and the first adsorption member 320 in each of the at least two first guide grooves 311. In this specification, the thickness of the first insulating film 310, the electrodes 330, and the first adsorption member 320 refers to their length in the second direction. For example, as... Figure 3B As shown, the thickness h1 of the first insulating film 310-1 located between any two adjacent electrodes of the at least two electrodes 330 can be greater than or equal to the sum h2 of the thicknesses of the electrodes and the first adsorption member 320 in each of the at least two first guide grooves 311. In some embodiments, in order to prevent the formation of conductive paths between the at least two electrodes 330 on the surface of the skin in contact with the at least two electrodes 330, the first insulating film 310 can also be designed with other structures, such as Figure 4B The first insulating film 410 and its related description.

[0050] The physiological signal acquisition device described in some embodiments of this specification, by draining and absorbing the sweat generated by human movement, prevents multiple electrodes from becoming connected due to the conductivity of sweat, thus avoiding abnormal reduction or inaccuracy of physiological signals and achieving accurate acquisition of physiological signals during human movement.

[0051] Figure 4A This is a top view of an exemplary physiological signal acquisition device 300 shown in some embodiments of this specification; Figure 4B This is a cross-sectional view of an exemplary physiological signal acquisition device 300 shown in some embodiments of this specification, perpendicular to a third direction.

[0052] like Figure 4A and Figure 4B As shown, the physiological signal acquisition device 300 may further include at least one second guide groove 312 disposed along the first direction. Each of the at least one second guide groove 312 is located between two adjacent first guide grooves 311 in the at least two first guide grooves 311. In some embodiments, a second suction member 340 is provided in the at least one second guide groove 312 shown.

[0053] At least one second guide groove 312 may be a groove for accommodating the second adsorption member 340 and / or the insulating water-conducting layer 350.

[0054] The second absorbent 340 may be a component within at least one second guide channel 312 for absorbing moisture. In some embodiments, the second absorbent 340 may be disposed in at least one second guide channel 312 for absorbing moisture and further guiding the moisture to flow in a second direction. In some embodiments, the second absorbent 340 and the first absorbent 320 may be made of the same material. For example, both the second absorbent 340 and the first absorbent 320 may be made of water-absorbing modified polyester fiber. In some embodiments, the material of the second absorbent 340 may be different from that of the first absorbent 320. For example, the second absorbent 340 may be made of a more absorbent material than the first absorbent 320, so that moisture is preferentially absorbed by the second absorbent in at least one second guide channel 312.

[0055] In some embodiments, the physiological signal acquisition device further includes an insulating water-conducting layer 350 for guiding moisture from the skin surface away from the skin. In some embodiments, such as Figure 4BAs shown, the insulating water-conducting layer 350 can cover at least one second guide groove 312 and is attached to the surface of the second adsorbent 340 near the skin. In some embodiments, the second adsorbent 340 in each second guide groove 312 can be in direct contact with the insulating water-conducting layer 350. When the insulating water-conducting layer 350 contacts the skin, the second adsorbent 340 can provide a certain pressure to the insulating water-conducting layer 350, so that the insulating water-conducting layer 350 is in close contact with the skin. In some embodiments, the second adsorbent 340 can also have water absorption and moisture storage capabilities. When the second adsorbent 340 absorbs moisture (e.g., sweat on the skin surface) and stores moisture, the moistened second adsorbent 340 can provide a certain amount of moisture to the insulating water-conducting layer 350, so that the insulating water-conducting layer 350 has good conductivity with the skin, improving the connectivity between the physiological signal acquisition device 300 and the skin. In some embodiments, to prevent excessive moisture stored in the second absorbent 340 from forming a conductive path on the skin surface that connects at least two electrodes 330, the sidewalls of each of the at least two first guide grooves 311 can be configured in a certain shape (e.g., as shown in the figure). Figure 5 As shown, the sidewall of each first guide groove 311 can have an approximately Y-shaped cross-section perpendicular to a third direction. In some embodiments, the second adsorption member 340 can also have water absorption and quick-drying functions. When there is a lot of moisture, the second adsorption member 340 can absorb the moisture and evaporate it to avoid the formation of a conductive path between the at least two electrodes 330 due to excessive moisture.

[0056] In some embodiments, in order to conduct all the moisture absorbed by the insulating water-conducting layer 350 into the second guide groove 312, and to prevent excessive moisture from forming a conductive path on the skin surface that connects at least two electrodes 330, the insulating water-conducting layer 350 in each second guide groove 312 may not be in contact with the sidewall of the second guide groove 312. For example, as Figure 4B As shown, the endpoint 350-1 of the insulating water-conducting layer 350 in the second guide groove 312 does not contact the side wall 312-1 of the second guide groove 312. That is, there can be a gap between the endpoint 350-1 of the insulating water-conducting layer 350 and the side wall 312-1 of the second guide groove 312 (for example, the endpoint 350-1 of the insulating water-conducting layer 350 and the side wall 312-1 of the second guide groove 312 have a certain distance in the first direction). The second adsorbent 340 is not completely blocked from the skin by the insulating water-conducting layer 350 in this gap, and the sweat produced by the skin can flow directly into the second adsorbent 340 through this gap.

[0057] Figure 5This is a cross-sectional view of an exemplary physiological signal acquisition device 300 perpendicular to a third direction, according to some embodiments of this application. In some embodiments, to prevent excessive moisture from forming a conductive path on the skin surface connecting at least two electrodes 330, the sidewall of each of the at least two first guide grooves 311 can have an approximately Y-shaped cross-section perpendicular to a third direction. For example, as... Figure 5 As shown, the sidewalls 310-2 and / or 310-3 of each of the at least two first guide grooves 311 have an approximately Y-shaped cross section perpendicular to a third direction, so that the physiological signal acquisition device 300 forms a wrap-around containment chamber for the at least two electrodes 330 on the surface in contact with the skin, so as to prevent water from flowing along the first direction and forming a conductive path for the at least two electrodes 330.

[0058] In some embodiments, the approximately Y-shaped bifurcated portions (i.e., the openings of the receiving compartments) of sidewalls 310-2 and / or 310-3 may be made of an elastic material. For example, when skin comes into contact with the approximately Y-shaped bifurcated portions and pressure is applied, the approximately Y-shaped bifurcated portions may undergo elastic deformation to relieve the pressure. In some embodiments, the approximately Y-shaped bifurcated portions may be made of the same material as the first insulating film 310. In some embodiments, the approximately Y-shaped bifurcated portions may be integrally formed with the first insulating film 310.

[0059] In some embodiments, such as Figure 5 As shown, the physiological signal acquisition device 300 also includes an isolation layer 360. In some embodiments, the isolation layer 360 may be attached to the first insulating film 310 on the side of the physiological signal acquisition device away from the skin, forming the at least two first guide grooves 311 and / or at least one second guide groove 312. In some embodiments, the isolation layer 360 may include an insulating element made of an insulating and waterproof material. For example, the isolation layer 360 may include a second insulating film. As another example, the isolation layer 360 may include a modified fabric. In some embodiments, when the side away from the skin (e.g., clothing containing the physiological signal acquisition device 300) is wetted, the isolation layer 360 may prevent the formation of a conductive path between the at least two electrodes 330 on the side away from the skin.

[0060] In some embodiments, the isolation layer 360 may include a second insulating film. For example, the second insulating film may be attached to the first insulating film 310 on the side of the physiological signal acquisition device away from the skin, forming the at least two first guide grooves 311 and / or at least one second guide groove 312. In some embodiments, the first insulating film 310 and the second insulating film may be formed by pressing or may be an integrally molded structure. In some embodiments, the first insulating film 310 and the second insulating film may be formed by sewing.

[0061] In some embodiments, the material of the second insulating film may be the same as or different from the material of the first insulating film 310. For example, the material of the second insulating film may include a polymer, while the first insulating film 310 may include silicone. In some embodiments, both the second insulating film and the first insulating film 310 may be made of rubber. In some embodiments, to improve the breathability and softness of the physiological signal acquisition device 300, the second insulating film may be a mesh structure. The pores of each mesh in the mesh structure may extend along a second direction. In some embodiments, the second direction may be perpendicular to the skin surface, i.e., the second direction is perpendicular to the first direction. For example, the mesh structure of the second insulating film may include a uniformly distributed mesh, each mesh extending along the second direction. The mesh structure achieves breathability and increases softness, while allowing moisture (e.g., sweat) to flow through the mesh structure along the second direction, preventing moisture from flowing along the first direction, thereby forming a conductive path between at least two electrodes 330.

[0062] In some embodiments, the insulating layer 360 may include a modified fabric for preventing absorbed moisture from being transversely conducted along a first direction, the modified fabric being located on the side of the physiological signal acquisition device away from the skin. In some embodiments, the modified fabric may be an insulating fabric, such as cotton, linen, or synthetic fiber fabric. In some embodiments, the modified fabric may be a composite fabric.

[0063] Figure 6 This is a top view of an exemplary physiological signal acquisition device 300 according to some embodiments of this application. In some embodiments, the physiological signal acquisition device 300 may further include an anti-slip strip 370 disposed on a first side of the physiological signal acquisition device 300. In some embodiments, such as Figure 6 As shown, the first side can be one side of the physiological signal acquisition device 300 along the first direction. The anti-slip strip 370 can be used to prevent slipping and prevent moisture from flowing along the first direction. In some embodiments, the anti-slip strip 370 can be a sealing strip, a sealing ring, an anti-slip tape, an anti-slip pad, or any combination thereof. In some embodiments, the material of the anti-slip strip 370 can have a high coefficient of friction. For example, the material of the anti-slip strip 370 can be rubber or similar materials. Figure 6 While only one anti-slip strip 370 is considered, it should be understood that the physiological signal acquisition device 300 may include one or more anti-slip strips 370. For example, the physiological signal acquisition device 300 may include two anti-slip strips 370, respectively located on both sides of the physiological signal acquisition device 300 along the first direction, to increase the stability of the physiological signal acquisition device 300 during wear and improve the accuracy of the acquired signals.

[0064] In some embodiments, the physiological signal acquisition device 300 may further include a channel 380 for conducting moisture. For example, the physiological signal acquisition device 300 may include a channel 380 disposed on a second side of the physiological signal acquisition device 300 for guiding moisture to flow along a first direction. In some embodiments, the second side is the side of the physiological signal acquisition device along a third direction. The plane containing the third direction and the first direction may be parallel to the skin surface in contact with the physiological signal acquisition device 300, and the third direction may be perpendicular to the first direction. For example, for a physiological signal acquisition device 300 that acquires electromyographic signals, the third direction may be perpendicular to the extension direction of the measured muscle fibers. In some embodiments, the at least two electrodes 330 may be mutually insulated from the channel 380 to ensure that moisture does not communicate with the at least two electrodes 330 during the flow of moisture in the channel 380 along the first direction, thereby avoiding the formation of a conductive path between the at least two electrodes 330 and accelerating the removal of moisture from the skin surface in contact with the physiological signal acquisition device 300. Figure 6 While only one channel 380 is considered, it should be understood that the physiological signal acquisition device 300 may include two or more channels 380. For example, the physiological signal acquisition device 300 may include two channels 380, located on opposite sides of the physiological signal acquisition device 300 along a third direction, to accelerate the flow of water.

[0065] Some embodiments of this specification also provide a wearable device, including the physiological signal acquisition device 300 described in any of the above embodiments. Exemplary wearable devices may include wrist supports, shoulder supports, elbow supports, knee supports, clothing, socks, etc., or any combination thereof. In some embodiments, the physiological signal acquisition device 300 can be connected to the wearable device by means of adhesive, buckles, Velcro, sewing, pressing, etc., to realize the acquisition of physiological signals.

[0066] The beneficial effects that the embodiments of this specification may bring include, but are not limited to: by designing the structure of the physiological signal acquisition device and selecting materials, it is difficult for the electrodes to conduct even when they are wet with sweat or water, thereby improving the accuracy of the physiological signal acquisition device in measuring physiological signals.

[0067] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0068] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0069] Furthermore, those skilled in the art will understand that aspects of this application can be described and illustrated through several patentable types or situations, including any new and useful combination of processes, machines, products, or substances, or any new and useful improvements thereof. Accordingly, aspects of this application can be implemented entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. All of the above hardware or software may be referred to as a “data block,” “module,” “engine,” “unit,” “component,” or “system.” Furthermore, aspects of this application may manifest as a computer product located on one or more computer-readable media, the product including computer-readable program code.

[0070] Computer storage media may contain a propagated data signal containing computer program code, for example, on baseband or as part of a carrier wave. This propagated signal may take various forms, including electromagnetic, optical, and suitable combinations thereof. Computer storage media can be any computer-readable medium other than a computer-readable storage medium, which can be connected to an instruction execution system, apparatus, or device to enable communication, propagation, or transmission of a program for use. The program code located on the computer storage medium can be propagated through any suitable medium, including radio, cable, fiber optic cable, RF, or similar media, or any combination of the above media.

[0071] The computer program code required for the operation of each part of this application can be written in any one or more programming languages, including object-oriented programming languages ​​such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB.NET, Python, etc., conventional procedural programming languages ​​such as C, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, dynamic programming languages ​​such as Python, Ruby, and Groovy, or other programming languages. This program code can run entirely on the user's computer, or as a standalone software package on the user's computer, or partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer can be connected to the user's computer through any network, such as a local area network (LAN) or wide area network (WAN), or connected to an external computer (e.g., via the Internet), or in a cloud computing environment, or used as a service such as Software as a Service (SaaS).

[0072] Furthermore, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this application are not intended to limit the order of the processes and methods of this application. Although the foregoing disclosure has discussed some currently considered useful embodiments of the invention through various examples, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments; rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments of this application. For example, while the system components described above can be implemented using hardware devices, they can also be implemented solely through software solutions, such as installing the described system on existing servers or mobile devices.

[0073] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0074] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of scope in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0075] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent are incorporated herein by reference. This excludes historical application documents that are inconsistent with or conflict with the content of this application, as well as documents that limit the broadest scope of the claims in this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0076] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described and illustrated in this application.

Claims

1. A physiological signal acquisition device, comprising: A first insulating film, wherein at least two first guide grooves are provided on the first insulating film along a first direction, and the at least two first guide grooves are insulated from each other; A first adsorption element is used to absorb moisture, and the first adsorption element is provided in at least two first guide grooves; At least two electrodes are used to contact the skin and collect physiological signals, the at least two electrodes covering the at least two first guide grooves and attached to the surface of the first adsorption element near the skin; At least one second guide groove is provided along the first direction, and each of the at least one second guide grooves is between two adjacent first guide grooves in the at least two first guide grooves. A second adsorption element is provided in the at least one second guide groove, and the first direction is parallel to the surface of the skin. as well as An insulating water-conducting layer is provided to direct moisture from the skin surface away from the skin. The insulating water-conducting layer covers the at least one second guide groove and is attached to the surface of the second absorbent near the skin. In each second guide groove, the insulating water-conducting layer does not contact the sidewall of the second guide groove.

2. The physiological signal acquisition device according to claim 1, characterized in that, The sidewall of each of the at least two first guide grooves has a Y-shaped cross-section perpendicular to a third direction, and the third direction is perpendicular to the plane containing the first direction and the second direction.

3. The physiological signal acquisition device according to claim 1, characterized in that, It also includes a second insulating film, which is located on the side of the physiological signal acquisition device away from the skin, and the first or second insulating film has a mesh structure.

4. The physiological signal acquisition device according to claim 3, characterized in that, The material of the first insulating film or the second insulating film includes at least one of the following: rubber, polymer, or silicone.

5. The physiological signal acquisition device according to claim 1, characterized in that, It also includes a modified fabric for preventing absorbed moisture from being transversely conducted along a first direction, the modified fabric being located on the side of the physiological signal acquisition device away from the skin.

6. The physiological signal acquisition device according to claim 1, characterized in that, The at least two electrodes include conductive fabric electrodes, which allow moisture to permeate and be absorbed by the first absorbent.

7. The physiological signal acquisition device according to claim 1, characterized in that, The material of the first adsorption element includes a sponge or a quick-drying material.

8. The physiological signal acquisition device according to claim 1, characterized in that, It also includes an anti-slip strip disposed on a first side of the physiological signal acquisition device, the first side being one side of the physiological signal acquisition device along the first direction, the anti-slip strip being used to prevent slipping and to prevent water from flowing along the first direction.

9. The physiological signal acquisition device according to claim 8, characterized in that, It also includes a channel disposed on the second side of the physiological signal acquisition device, the second side being the side of the physiological signal acquisition device along a third direction, the channel being used to guide water to flow along the first direction.

10. A wearable device comprising the physiological signal acquisition device as described in any one of claims 1-9.

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