Signal acquisition apparatus

Abstract

One or more embodiments in the specification relate to a signal acquisition apparatus, comprising a wearable main body. The wearable main body comprises: a plurality of electrodes in contact with a user's skin, comprising a first electrode and a second electrode that are configured to acquire electromyographic signals from a target muscle of the user, and are arranged apart in the direction of the muscle fibers of the target muscle; and a base body, configured to bear the plurality of electrodes and position the plurality of electrodes at the target muscle, wherein the base body comprises a base body yarn, and the plurality of electrodes comprise an electrically conductive yarn; the base body and the plurality of electrodes are integrally woven.

Description

A signal acquisition device TECHNICAL FIELD

[0001] The present specification relates to the field of signal acquisition, and in particular, to a signal acquisition device. BACKGROUND

[0002] Monitoring of running exercise can be achieved by using an electromyography calf sleeve. The electromyography calf sleeve is generally arranged along the muscle fiber direction to collect and monitor the electromyography signal of the leg muscle. However, the current electromyography calf sleeve has poor wearing comfort, poor local elasticity due to the existence of electrode structure, and is troublesome to wear.

[0003] Therefore, it is necessary to provide a signal acquisition device, which has appropriate elasticity at each part of the wearing body, is low in wearing difficulty and high in wearing comfort, and is suitable for a wide range of people.

[0004] SUMMARY

[0005] The present specification provides a signal acquisition device, which includes a wearing body, the wearing body includes: a plurality of electrodes in contact with the skin of a user, the plurality of electrodes includes a first electrode and a second electrode, the first electrode and the second electrode are configured to collect electromyography signals of a target muscle of the user, the first electrode and the second electrode are arranged at intervals along the muscle fiber direction of the target muscle; and a base body configured to carry the plurality of electrodes and locate the plurality of electrodes at the target muscle; wherein the base body includes a base body yarn, the plurality of electrodes includes a conductive yarn, and the base body and the plurality of electrodes are integrally knitted. BRIEF DESCRIPTION OF DRAWINGS

[0006] The present specification will be further described in the manner of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, the same numbers represent the same structures, wherein:

[0007] FIG. 1 is a structural schematic diagram of a signal acquisition device according to some embodiments of the present specification;

[0008] FIG. 2 is a schematic diagram of a waterproof layer according to some embodiments of the present specification;

[0009] FIG. 3 is a partial schematic diagram of a wearing body according to some embodiments of the present specification;

[0010] FIG. 4 is a schematic diagram of different knitting modes according to some embodiments of the present specification;

[0011] FIG. 5 is a partial schematic diagram of a wearing body according to some embodiments of the present specification;

[0012] Fig. 6 is a structural schematic diagram of a signal acquisition device according to some embodiments of the present specification;

[0013] Fig. 7 is a structural schematic diagram of a fixing member according to some embodiments of the present specification. DETAILED DESCRIPTION

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings required to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some examples or embodiments of the present specification, and for those skilled in the art, the present specification can also be applied to other similar scenarios without creative labor on the basis of these drawings. It should be understood that these exemplary embodiments are only presented to enable those skilled in the art to better understand and implement the present specification, and do not limit the scope of the present specification in any way. Unless it is clear from the language environment or otherwise stated, the same reference numbers in the drawings represent the same structure or operation.

[0015] As shown in the present specification and claims, unless the context clearly indicates otherwise, the words "one", "an", "a", and / or "the" do not specifically indicate the singular, but can also include the plural. Generally speaking, the terms "comprising" and "including" only indicate that the steps and elements explicitly identified are included, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements. The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment".

[0016] In the description of the present specification, it should be understood that the terms "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present specification and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present specification.

[0017] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present specification, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0018] In this specification, unless otherwise expressly specified and limited, the terms "install", "connect", "connect", "fix", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in this specification can be understood according to the specific circumstances.

[0019] Some embodiments of the present specification provide a signal acquisition device. In some embodiments, the signal acquisition device includes a wearable body. The wearable body includes a plurality of electrodes in contact with the skin of a user. Among them, the plurality of electrodes includes a first electrode and a second electrode, the first electrode and the second electrode are configured to acquire an electromyographic signal of a target muscle of the user, and the first electrode and the second electrode are arranged along the muscle fiber direction of the muscle. The first electrode and the second electrode can respectively acquire the potential of the skin surface at the position where they are located, and the potential difference between the acquired potentials can be used to reflect the electromyographic signal of the target muscle. In some embodiments, the wearable body further includes a base body, which can carry the plurality of electrodes and locate the plurality of electrodes at the target muscle. Among them, the base body includes a base body yarn, and the plurality of electrodes includes a conductive yarn, and the base body yarn and the conductive yarn are mixedly woven to realize the integrated weaving of the base body and the plurality of electrodes. Through the integrated weaving structure of the base body and the plurality of electrodes, the embodiments of the present specification can make the overall elasticity of the signal acquisition device larger and easy to wear. And it can greatly simplify the preparation process of the base body and the electrode, realize the automation of production, bring a large number of advantages such as mass production, quality controllable, excellent consistency. At the same time, through the material selection of the base body yarn and the conductive yarn and the design of the weaving structure in the integrated weaving process, the elasticity of different parts of the wearable body can be realized to realize the pressure control of the skin of the user at different parts of the wearable body.

[0020] Figure 1 is a structural schematic diagram of a signal acquisition device according to some embodiments of the present specification. As shown in Figure 1, the signal acquisition device 100 can include a wearable body.

[0021] The signal acquisition device 100 can acquire the electromyography signal of the user's muscle. For example, the signal acquisition device 100 can acquire the electromyography signal of the user's muscle through a plurality of electrodes attached to the user's skin. In some embodiments, the signal acquisition device 100 can include a wearable body (e.g., a garment) configured to be worn on the user's body. When the user wears the wearable body, the plurality of electrodes in the wearable body can be in contact with the user's skin, thereby acquiring the electromyography signal on the skin surface. For example, the potential difference acquired by two electrodes arranged along the direction of the muscle fibers of the target muscle can represent the electromyography signal of the target muscle. In some embodiments, the wearable body can be in contact with multiple parts of the human body, such as the lower leg, the upper leg, the hips, the waist, the back, the chest, the shoulder, the neck, etc., to acquire the electromyography signal of the part. For example only, the wearable body is in contact with the user's leg, and the signal acquisition device 100 is configured to acquire the electromyography signal of the user's leg muscle.

[0022] In some embodiments, the wearable body includes, but is not limited to, a shirt (e.g., a T-shirt, a waistcoat, a vest, a coat, etc.), a shoulder pad, a waistband, a wristband, an elbow pad, a bracelet, a knee pad, a skirt, pants (e.g., long pants, shorts, etc.), socks, etc. In some embodiments, the wearable body includes a strap that can be fixed to the user's waist, chest, wrist, arm, ankle, leg, neck, or finger, etc. by means of binding, sticking, etc. The form of the wearable body is not limited in the present specification, and any wearable body that can be used with the device described in the present specification is within the scope of the present specification. In some embodiments, the wearable body includes a base body 110 and a plurality of electrodes 120.

[0023] The base body 110 is a carrier that carries the electrodes 120 and other components, and positions the electrodes 120 at the target muscle of the human body. In some embodiments, the base body 110 can be implemented as a leg-wearable structure, such as a leg strap (e.g., a full-leg strap, an upper-leg strap, a lower-leg strap, etc.), a leg sleeve (e.g., a full-leg sleeve, an upper-leg sleeve, a lower-leg sleeve, etc.), a sock (e.g., a lower-leg sock, an upper-leg sock, a panty sock, etc.), pants, etc. In some embodiments, as shown in FIG. 1, the base body 110 forms a leg sleeve. The leg sleeve can be a closed ring structure that is elastic by itself and can be elastically stretched and contracted in the radial direction, and can be entirely sleeved onto the user's leg to achieve a high level of comfort when worn. It should be noted that the base body 110 is not limited to the leg sleeve shown in FIG. 1, and can also include other forms (e.g., a sheet structure, a ring, etc.).

[0024] The electrodes 120 can collect the electromyography signals of the target muscle of the user. For example, the electrodes 120 can be fixed on the base 110 and in contact with the skin of the user, so as to collect the electromyography signals on the surface of the skin. In some embodiments, the electrodes 120 can include a first electrode 121 and a second electrode 122. The first electrode 121 and the second electrode 122 can be used to collect the electromyography signals of the target muscle of the user, which can refer to a single muscle or a same muscle group (for example, the quadriceps muscle group including rectus femoris, vastus lateralis, vastus medialis and vastus intermedius). For example, the first electrode 121 and the second electrode 122 can be arranged in a spaced-apart manner along the muscle fiber direction of the target muscle and respectively extend along the extension direction perpendicular to the muscle fiber direction, so as to respectively collect the electric potential on the surface of the skin at the respective positions, and the potential difference between the collected electric potentials can be used to reflect the electromyography signals of the target muscle. In some embodiments, when the target muscle is a single muscle, due to the existence of multiple other muscles around the target muscle, the electromyography signals collected by the electrodes 120 can include the electromyography signals of the target muscle and the other muscles around the target muscle. Since the target muscle and the other muscles around the target muscle are in the same muscle group, and the electromyography signals generated by the muscles in the same muscle group are relatively close, the electromyography signals actually collected by the electrodes 120 are close to the electromyography signals of the target muscle, and the error is small. That is, the electromyography signals actually collected by the electrodes 120 can represent the electromyography signals of the target muscle. It should be noted that in other embodiments, the proportion of noise (i.e., the electromyography signals of the other muscles around the target muscle) in the electromyography signals collected by the electrodes 120 can also be reduced through the shape design of the electrodes 120, algorithm processing and the like, so as to improve the accuracy of the signal collection device 100, and the present specification does not make too many limitations in this regard.

[0025] In some embodiments, the electrodes 120 can collect the electromyography signals of the target muscles on the front or back of the user's leg. Taking the lower leg as an example, the target muscles on the front of the user's lower leg can include the gastrocnemius, the tibialis posterior muscle, etc.; the target muscles on the back of the lower leg can include the soleus muscle, the gastrocnemius muscle, etc. In some embodiments, the muscles on the back of the leg (e.g., the gastrocnemius muscle) provide the main driving force for human body activities such as walking, running and jumping, and by causing the electrodes 120 to collect the electromyography signals of the target muscles on the back of the user's leg (e.g., the electromyography signals of the gastrocnemius muscle), the running movement of the user can be more accurately monitored. In some embodiments, the first electrode 121 and the second electrode 122 can be arranged in a spaced-apart manner along the muscle fiber direction of the gastrocnemius muscle and respectively extend along an extension direction perpendicular to the muscle fiber direction. That is, the first electrode 121 and the second electrode 122 can be arranged at the gastrocnemius muscle in a spaced-apart manner along the height direction of the user and respectively extend along an extension direction perpendicular to the height direction of the user, the first electrode 121 and the second electrode 122 respectively collect the electric potentials on the surface of the skin at the positions where they are respectively located, and the potential difference between the collected electric potentials can be used to reflect the electromyography signals of the gastrocnemius muscle.

[0026] In some embodiments, the plurality of electrodes 120 include conductive yarns, and the electrodes 120 collect or transmit electrical signals through the conductive yarns. The conductive yarns refer to yarns with conductive properties. For example, the conductive yarns are conductive metal wires. In some embodiments, a conductive metal can be deposited on the surface of the yarn to form the conductive yarn. The yarn includes textile materials such as nylon, polyester, spandex, TPU (polyurethane elastomer), etc. For example, silver and / or silver chloride (chlorine content 5%-15%) can be deposited on the surface of the yarn to form the conductive yarn. In some embodiments, the electrodes 120 can be knitted from the conductive yarns.

[0027] In some embodiments, the base body 110 can include a base body yarn. Since the base body 110 carries the plurality of electrodes 120, in order to avoid the base body 110 interfering with the signal collection of the electrodes 120 (e.g., the first electrode 121 and the second electrode 122), affecting the accuracy of the myoelectric signal collection, in some embodiments, the base body yarn can include an insulating yarn. The arrangement of the insulating yarn makes the base body 110 unable to receive the myoelectric signal of the human skin, avoiding the base body 110 interfering with the operation of the electrodes 120 (e.g., the first electrode 121 and the second electrode 122). In order to make the wearable body have elasticity, so that the wearable body can better fit the skin of the user in the wearing state, so as to facilitate the electrodes 120 to collect the myoelectric signal, the base body yarn can include an elastic yarn, which can make the base body 110 have elasticity. In some embodiments, the base body yarn can have both elasticity and insulation, that is, the base body yarn can include an elastic insulating yarn. In some embodiments, the base body 110 and the plurality of electrodes 120 are integrally knitted, that is, the conductive yarn and the base body yarn are integrally knitted. For example, a four-way machine is applied to realize the integrally knitting of the conductive yarn and the base body yarn. For example, the designed knitting structure drawing is imported into the four-way machine, and the conductive yarn and the base body yarn are automatically knitted. Integrally knitting can be understood as a process of continuously knitting an overall fabric using multiple yarns. For example, when the fabric includes areas that need to be knitted by different types of yarns respectively, the integrally knitting method can continuously knit these areas by using a transition knitting method (e.g., tuck knitting) between different areas, without the need to separately manufacture each area in advance, and then "splice" these areas by post-processing (e.g., sewing or bonding).

[0028] The embodiments of the present specification ensure that the base body 110 and the electrodes 120 have elasticity and consistency as a whole by integrally knitting the base body 110 with the plurality of electrodes 120, which can adapt to the user's wearing and improve the wearing experience. The elasticity of the base body 110 can make the electrodes 120 closely adhere to the skin of the user, ensuring the accuracy of signal collection. The use of integrally knitting technology can simplify the processing flow, realize the automation of production of the signal collection device 100, and has the advantages of easy mass production, controllable quality, excellent consistency, etc.

[0029] The average blood pressure of the capillary vessels on the surface of human skin is about 7.85 kPa. When the pressure of the garment on the human body in the worn state is too large (for example, close to or greater than the average value), it will hinder the blood flow, causing the blood flow to be difficult or even to stop. When the pressure of the garment on the human body in the worn state is too small, the garment may not be worn firmly and may easily slip off, affecting the wearing comfort and stability. In some embodiments, in order to make the signal acquisition device 100 have higher wearing comfort and stability, the pressure range of the signal acquisition device 100 on the human body in the worn state can be 1.96 kPa-3.92 kPa. By means of integrated knitting, the thickness and / or yarn density of different regions of the wearing body of the signal acquisition device 100 can be adjusted, so as to adjust the elasticity of the wearing body at different positions, so that the wearing body can be well fitted to the skin of the user in the worn state, and at the same time, the pressure of the wearing body on the human body in the worn state is appropriate. Specifically, the thicker the thickness of a region on the wearing body, the greater the elasticity of the region, and the stronger the elasticity. The thinner the thickness of a region on the wearing body, the smaller the elasticity of the region, and the weaker the elasticity. The greater the elastic yarn density of a region on the wearing body, the greater the elasticity of the region, and the stronger the elasticity. The smaller the elastic yarn density of a region on the wearing body, the smaller the elasticity of the region, and the weaker the elasticity. At the same time, by designing the elasticity of the wearing body, the wearing body has good ductility, so that the signal acquisition device 100 can be adapted to different people, and the application range of the signal acquisition device 100 is improved.

[0030] In the working process of the signal acquisition device 100, due to external environmental factors (such as rainwater, etc.) and personal factors of the user (such as exercise sweating, etc.), the wearing body may be wetted by liquid. In order to avoid the mutual conduction of different electrodes 120 (such as the first electrode 121 and the second electrode 122) due to the wet wearing body, in some embodiments, as shown in FIG. 1, the wearing body further includes a waterproof layer 130. The waterproof layer 130 can isolate the abnormal conduction between the electrodes 120 due to wetting, so as to avoid the influence of the wet wearing body on the accuracy of the electromyographic signal acquisition. In some embodiments, the waterproof layer 130 includes waterproof yarn, and the waterproof yarn can surround different electrodes 120 respectively. For example, the waterproof yarn can surround the first electrode 121 and / or the second electrode 122 to isolate the first electrode 121 from the second electrode 122. In some embodiments, the waterproof layer 130 is integrally knitted with the base body 110 and the plurality of electrodes 120, that is, the waterproof yarn, the conductive yarn and the base body yarn are integrally knitted. The integrated knitting can improve the flatness of the surface of the wearing body, and can simplify the processing flow, can realize automatic production, has the advantages of easy mass production, controllable quality, excellent consistency, etc.

[0031] The data and specifications of the waterproof yarn, conductive yarn, and other yarns can be referred to the subsequent content of the specification (e.g., the related content of FIG. 2).

[0032] It should be noted that the above description of FIG. 1 is provided for illustrative purposes only and is not intended to limit the scope of the present application. Various changes and modifications can be made by those of ordinary skill in the art under the guidance of the present application. For example, in some embodiments, the signal acquisition device 100 can also include one or more components (e.g., a circuit board, a battery, Bluetooth, an amplifier, a memory, an inertial sensor, etc.). Alternatively or additionally, the one or more components can be located on the outside of the leg or the waist, etc. when the user wears the signal acquisition device 100. These changes and modifications do not deviate from the scope of the specification.

[0033] In some embodiments, by designing different parameters of the conductive yarn, the conductive yarn can have corresponding use performance. For example, by designing the thickness of the conductive yarn, different processing machines can be adapted; by designing the strength of the conductive yarn, the conductive yarn can be protected from breaking when entering the processing machine for integrated weaving; by designing the elastic modulus of the conductive yarn, it can be suitable for the processing needs of different processing machines, and also facilitate the subsequent control of the elasticity of different areas of the wearing body of the signal acquisition device 100; by designing the conductivity of the conductive yarn, the electrode 120 can have better conductivity, improving the sensitivity of the electrode 120; by designing the resistance of the conductive yarn, the use performance and service life of the signal acquisition device 100 can be improved, and the probability of problems such as loss of conductivity, deformation, discoloration, etc. of the signal acquisition device 100 can be reduced.

[0034] In some embodiments, the conductive yarn can include but is not limited to metal conductive yarn, non-metal conductive yarn, etc. For example, the metal conductive yarn can include silver-plated polyamide low-elasticity filament, silver-plated polyamide yarn, silver fiber spandex covered yarn, stainless steel yarn, etc., and the non-metal conductive yarn can include graphene polyester conductive filament, graphene polyester short yarn, etc. Among them, the silver-plated polyamide low-elasticity filament is made by stretching and false twist texturing processing with pre-oriented yarn as the original yarn, the silver-plated polyamide yarn is made by plating a silver ion layer on the surface of polyamide filament, the silver fiber spandex covered yarn is an elastic yarn formed by covering the silver-plated polyamide low-elasticity filament in a spiral manner on the stretched state of the spandex filament, the stainless steel yarn is made by stretching or bundle drawing the single yarn into a fiber shape, the graphene polyester conductive filament is made by dipping graphene paste on the surface of polyester filament to make it conductive, and the graphene polyester short yarn is made by adding graphene to the polyester master batch.

[0035] In some embodiments, the silver-plated nylon low-elasticity filament, the silver-plated nylon yarn, the silver fiber spandex cover yarn, the stainless steel yarn, the graphene polyester conductive filament, and the graphene polyester short filament all have good yarn uniformity in terms of yarn uniformity, and the difficulty of integrated knitting is low. The yarn density of the finished product (for example, the wearing body) is uniform everywhere, and it is not easy to tear under stress, and it is convenient to control the elasticity of different areas. In terms of tensile properties, the silver-plated nylon yarn, the silver fiber spandex cover yarn, the graphene polyester conductive filament, and the graphene polyester short filament all have good tensile properties, which is conducive to knitting a knitted fabric with good elasticity and flexibility. The tensile properties of the stainless steel yarn are poor, and the rigidity is large, which is not easy to bend into a loop, and the knitting needle is prone to breakage during knitting. In terms of electrical conductivity, the metal conductive yarn (stainless steel yarn, silver-plated nylon low-elasticity filament, silver-plated nylon yarn, and silver fiber spandex cover yarn) has good electrical conductivity.

[0036] In summary, in some embodiments, in order to facilitate on-machine processing and knitting, and at the same time make the processed electrode 120 have good use performance, the conductive yarn can include at least one of the silver-plated nylon low-elasticity filament, the silver-plated nylon yarn, and the silver fiber spandex cover yarn.

[0037] In some embodiments, the conductive yarn is made of at least a conductive fiber (such as carbon fiber, metal fiber, etc.) wrapped around an elastic fiber (such as polyurethane, nylon, etc.), so that the conductive yarn has both electrical conductivity and elasticity, and improves the user's wearing experience under the premise of being able to collect electromyographic signals. In other embodiments, the conductive yarn can also be made of at least a conductive fiber wrapped with an elastic film (such as a polyurethane film) on the side. When the elastic film or the elastic fiber is in a natural state, the conductive fiber is in a relaxed state, that is, the conductive fiber can have some curved structures. In the wearing state, the wearing body deforms, the elastic film or the elastic fiber stretches, and the curved structure of the conductive fiber decreases. When the conductive fiber has no curved structure, the elastic conductive yarn is stretched to the maximum deformation.

[0038] The embodiments of the present specification improve the elasticity of the electrode 120 by using the elastic conductive yarn, improve the wearing comfort of the signal acquisition device 100, and improve the signal-to-noise ratio and the stability of signal acquisition of the electromyographic signal collected by the signal acquisition device 100.

[0039] In some embodiments, the conductive yarns can be waterproof and insulated, so as to avoid conduction between the plurality of electrodes 120 and affect the accuracy of the collected myoelectric signals. In some embodiments, the conductive yarns can be wrapped with an insulating material (e.g., EVA), and the conductive yarns can be treated (e.g., dissolved or removed) at the parts where conduction is needed (e.g., the parts of the conductive yarns in contact with the skin of the user), so as to achieve the conduction effect, and the remaining part of the wrapping layer forms the waterproof layer 130. After the conductive yarns are wrapped with the insulating material, the elasticity of the conductive yarns disappears, which makes it difficult for the surface of the electrodes 120 to tightly adhere to the skin, and the high temperature in the wrapping process of the insulating material can easily cause the spandex yarns in the conductive yarns to break, which affects the elasticity of the conductive yarns.

[0040] FIG. 2 is a schematic diagram of a waterproof layer according to some embodiments of the present specification.

[0041] In some embodiments, as shown in FIG. 2, the waterproof yarns, the conductive yarns, and the base yarns are integrally knitted, the base yarns of the base 110 surround the conductive yarns, the conductive yarns are knitted to form the electrodes 120, and the waterproof yarns are knitted to form the waterproof layer 130, which surrounds the electrodes 120, so as to isolate each electrode 120 from the base 110, avoid abnormal conduction between the plurality of electrodes 120, and affect the accuracy of the collected myoelectric signals. In some embodiments, the waterproof layer 130 can completely surround the electrodes 120. The waterproof yarns are locally knitted to divide the waterproof area, so as to prevent the conduction between the electrodes 120 and solve the waterproof problem from the yarn level. In some embodiments, if a waterproof film is used to waterproof the electrodes 120, the base 110 as a knitted fabric has elasticity and ductility, while the waterproof film has difficulty in matching the elasticity and ductility of the base 110 as a knitted fabric. When the base 110 is deformed and stretched, the deformation degree of the base 110 and the waterproof film can be different, which can cause the waterproof film to be separated from the base 110 or damaged, and affect the waterproof effect. The local knitting of the waterproof yarns to divide the waterproof area can better avoid the problem of poor waterproof effect caused by the mismatch of the mechanical properties of the knitted fabric and the waterproof film.

[0042] In some embodiments, the waterproof yarn production process can include two ways: (1) in the spinning process, add waterproof master batch in the dope to achieve the effect of waterproof and anti-siphon of the yarn; (2) after the yarn is immersed in a waterproof finishing agent, high-temperature drying is performed. The waterproof yarn produced by way (1) has good effect, high washing resistance and good wear resistance. The waterproof yarn produced by way (2) has good waterproof effect and can achieve good anti-siphon effect. In some embodiments, the production method of the waterproof yarn can include: making the yarn from the waterproof master batch, and coating spandex on the surface of the yarn, so that the waterproof yarn has good waterproof performance and elasticity, which is convenient for integrated knitting and elastic design of the wearable body.

[0043] FIG. 3 is a partial schematic view of a wearable body according to some embodiments of the present specification. As shown in FIG. 3, the waterproof layer 130 and the base body 110 are connected in a coplanar and parallel form.

[0044] In some embodiments, the base body 110 is knitted from base yarn. The waterproof layer 130 is knitted from yarn such as waterproof yarn. The waterproof layer 130 and the base body 110 are connected in a coplanar and parallel form, and the outer peripheral side of the waterproof layer 130 is connected to the base body 110, so that the overall hand feeling of the wearable body is flat and dense, which facilitates close fitting of the wearable body to the human skin and collection of the myoelectric signal by the electrode 120.

[0045] The connection of the outer peripheral side of the waterproof layer 130 to the base body 110 can be achieved by one or more knitting methods. In some embodiments, the connection of the waterproof layer 130 to the base body 110 can be achieved by one or more of tuck knitting, double knitting, and staggered connection.

[0046] FIG. 4 is a schematic view of different knitting methods according to some embodiments of the present specification. In FIG. 4, the knitting principles, design patterns, and knitted objects of three knitting methods, i.e., tuck knitting, double knitting, and staggered connection, are shown.

[0047] As shown in FIG. 4, when splicing is performed in the tuck manner, one high needle position and one half needle position are used on the left and right sides of the transition area of different regions, and the old loop on the half needle position is not dropped while hooking the new yarn end to form a loop and then being dropped together to complete the tuck connection. The tuck manner makes the thickness of the joint area thicker, and the overall hand feeling is flat, dense, firm, wear-resistant and durable. When splicing is performed in the double loop manner, high needle positions are used on the left and right sides, and connection is completed by continuous loop dropping twice at the joint. The double loop splicing makes the joint area longer, forming obvious pores and edge protrusions with a wrinkled feeling. The offset splicing manner uses the float to pull the eyelet small, and the joint is flat, uniform in thickness. In some embodiments, the waterproof layer 130 and the base body 110 are connected in the tuck manner, which can make the connection between the waterproof layer 130 and the base body 110 flat, dense, firm, wear-resistant and durable, and effectively prevent the connection from breaking and cracking during use.

[0048] In some embodiments, to avoid abnormal conduction between the electrodes 120 (for example, between the first electrode 121 and the second electrode 122), the waterproof layer 130 can be provided to isolate different electrodes 120. A plurality of electrodes 120 are provided on the base body 110, and correspondingly, the number of waterproof layers 130 is also a plurality. The waterproof layer 130 is provided in one-to-one correspondence with the electrode 120, and the waterproof layer 130 isolates the corresponding electrode 120. In some embodiments, each waterproof layer 130 surrounds a corresponding electrode 120, and each electrode 120 is connected to the inner circumferential side of the corresponding waterproof layer 130. In some embodiments, as shown in FIG. 3, the waterproof layer 130 and the electrode 120 are connected in a coplanar and parallel form.

[0049] In some embodiments, as shown in FIG. 3, the base body 110, the waterproof layer 130 and the electrode 120 can be connected in sequence in a coplanar and parallel form. The waterproof layer 130 can separate the base body 110 and the electrode 120, avoiding the wetting of the electrode 120 by the base body 110 and causing abnormal conduction between different electrodes 120. On the other hand, under the condition that the overall thickness of the wearable body is constant, by connecting the base body 110, the waterproof layer 130 and the electrode 120 in a coplanar and parallel form, the thickness of the electrode 120 can be effectively increased, while the contact pressure between the electrode 120 and the user's skin is better reduced, and the wearing comfort of the signal acquisition device 100 is improved.

[0050] In some embodiments, the connection between each electrode 120 and the inner circumferential side of the corresponding waterproof layer 130 can be achieved by one or more weaving methods. In some embodiments, the connection between each electrode 120 and the corresponding waterproof layer 130 can be achieved by one or more of tuck weaving, double-loop weaving, and staggered connection. In some embodiments, referring to FIG. 4, the connection between each electrode 120 and the corresponding waterproof layer 130 by tuck weaving can make the connection between the waterproof layer 130 and the electrode 120 flat and compact, firm and wear-resistant, and can effectively prevent the connection from breaking during use.

[0051] In some embodiments, in the form of coplanar juxtaposition, each electrode 120 protrudes from the corresponding waterproof layer 130 in the direction towards the user's skin. That is, in the direction towards the user's skin, the thickness dimension of the electrode 120 is greater than the thickness dimension of the waterproof layer 130, so that each electrode 120 protrudes from the corresponding waterproof layer 130. Thus, when the base body 110 and the waterproof layer 130 are in contact with the skin, the electrode 120 is in closer contact with the skin, enhancing the signal acquisition performance.

[0052] In some embodiments, to isolate the electrode 120 from the base body 110 by the waterproof layer 130, each electrode 120 in the plurality of electrodes 120 can be woven to connect to the side of the waterproof layer 130 facing the user's skin, that is, each electrode 120 and the corresponding waterproof layer 130 are arranged in a stacked manner in the direction towards the user's skin. In some embodiments, in the direction perpendicular to the direction towards the user's skin, the area of the waterproof layer 130 can be greater than the area of the electrode 120, to ensure the waterproof isolation effect of the waterproof layer 130.

[0053] By weaving each electrode 120 to connect to the side of the waterproof layer 130 facing the user's skin in a stacked manner, each electrode 120 is arranged to protrude from the corresponding waterproof layer 130, so that when the base body 110 and the waterproof layer 130 are in contact with the skin, the electrode 120 is in closer contact with the skin, enhancing the signal acquisition.

[0054] FIG. 5 is a partial schematic view of a wearable body according to some embodiments of the present specification. As shown in FIG. 5, in some embodiments, the waterproof layer 130 can also be woven to connect to the side (i.e., the inner surface) of the base body 110 facing the user's skin, that is, the waterproof layer 130 and the base body 110 are arranged in a stacked manner in the direction towards the user's skin, so that the waterproof layer 130 protrudes from the base body 110, to increase the vertical spacing between the electrode 120 and the base body 110, and better avoid abnormal conduction between different electrodes 120 under wet conditions.

[0055] In some embodiments, the electrode 120 is woven to the waterproof layer 130 on the side away from the base 110. That is, the electrode 120 and the waterproof layer 130 are arranged in a stacked manner towards the user's skin, so that the electrode 120 protrudes from the waterproof layer 130, thereby enhancing the contact between the electrode 120 and the skin when the base 110 contacts the skin, and enhancing the signal acquisition. In some embodiments, the area of the waterproof layer 130 can be greater than or equal to the area of the electrode 120 in a direction perpendicular to the direction towards the user's skin, so as to ensure the waterproof isolation effect of the waterproof layer 130.

[0056] In other embodiments, when the base 110 and the waterproof layer 130 are arranged in a stacked manner towards the user's skin, the electrode 120 and the waterproof layer 130 can also be woven in a coplanar and parallel manner. The present specification does not make excessive limitations on this.

[0057] In some embodiments, when the electrode 120, the waterproof layer 130, and the base 110 are woven in a coplanar and parallel manner, the surface of the waterproof layer 130 close to and / or away from the skin can be woven in a concave-convex shape to increase the elasticity of the waterproof layer 130 itself. When worn, the waterproof layer 130 is stretched, the degree of concave-convex of the surface thereof is reduced, but the waterproof effect is not weakened, which is conducive to ensuring the liquid blocking effect of the waterproof layer 130. In some embodiments, when the waterproof layer 130 and the base 110 are woven in a coplanar and parallel manner, and the electrode 120 and the waterproof layer 130 are woven in a stacked manner, the surface of the waterproof layer 130 away from the skin can be woven in a concave-convex shape, so as to increase the elasticity of the waterproof layer 130 while facilitating the connection of the electrode 120 to the surface of the waterproof layer 130 close to the skin. In some embodiments, when the electrode 120 and the waterproof layer 130 are woven in a coplanar and parallel manner or a stacked manner, the surfaces of the multiple electrodes 120 close to the skin can be woven in a concave-convex shape to increase the effective area of the electrode 120 region, increase the contact area between the electrode 120 and the skin when the electrode 120 is stretched, and improve the friction with the skin, thereby increasing the signal-to-noise ratio. In some embodiments, when the electrode 120, the waterproof layer 130, and the base 110 are woven in a coplanar and parallel manner, the surfaces of the multiple electrodes 120 close to and away from the skin can be woven in a concave-convex shape at the same time, so as to further increase the elasticity of the electrode 120 itself, and increase the contact area with the skin when the electrode 120 is stretched.

[0058] In some embodiments, the wearable body can also not include the waterproof layer, each of the plurality of electrodes 120 includes a first region and a second region, the first region is connected to the base body 110 through the second region, the first region is in contact with the user's skin to collect electrical signals, and the second region is electrically insulated from the user's skin. The first region here is similar to the aforementioned electrode 120 and has conductive performance, and the second region is similar to the aforementioned waterproof layer 130 and has waterproof and insulating performance. The second region of each electrode 120 can isolate the first region of the electrode 120 from the first regions of other electrodes 120. In some embodiments, the second region of each electrode 120 surrounds the first region, that is, the second region and the first region of each electrode 120 can be woven in a coplanar and parallel form. In some embodiments, the second region of each electrode 120 and the base body 110 can be woven and spliced in a coplanar and parallel form or a stacked form.

[0059] The embodiments of the present specification achieve waterproof isolation of the first region and the base body 110 through the second region by regionally designing the electrodes 120 without separately designing the waterproof layer 130, so that the waterproof yarn does not need to be added during the integrated weaving process of the wearable body, material costs are saved, and the difficulty of weaving is reduced.

[0060] In some embodiments, in the direction towards the user's skin, the first region of each electrode 120 protrudes from the second region. That is, in the direction towards the user's skin, the thickness dimension of the first region of each electrode 120 can be greater than the thickness dimension of the second region, so that the first region protrudes from the second region. When the base body 110 is in contact with the skin, the first region can be in closer contact with the skin under the elastic action of the base body 110, enhancing signal collection. At the same time, the first region protrudes from the second region, which increases the contact area of the first region and the skin, facilitating signal collection.

[0061] In some embodiments, the first region and the second region of each electrode 120 include conductive yarns, and the conductive yarns themselves have waterproof and insulating properties through waterproof and insulating treatment. For example, after wrapping a layer of waterproof and insulating film (such as EVA) around the conductive yarns to weave the electrode 120, the waterproof and insulating film of the conductive yarns in the first region is treated, such as dissolved or removed, so that the conductive yarns in the first region can directly contact the skin to collect electromyographic signals; the part of the waterproof and insulating film of the conductive yarns in the second region has a waterproof and insulating effect. For another example, after the conductive yarns are woven to form the electrode 120, the second region is directly waterproofed (such as immersed, coated with waterproof solvent, etc.), and the first region is not waterproofed.

[0062] FIG. 6 is a structural schematic diagram of a signal collection device according to some other embodiments of the present specification.

[0063] In some embodiments, as shown in FIG. 6, the wearing body includes a plurality of straps 140 connected to the base body 110, the plurality of straps 140 are arranged along the direction of muscle fibers (e.g. the X direction in FIG. 6), and each strap 140 extends along a direction perpendicular to the muscle fibers. In the wearing state, the base body 110 extends along the direction of muscle fibers, and the plurality of straps 140 and the plurality of electrodes 120 are arranged along the direction of muscle fibers. For example only, when the signal acquisition device 100 is worn on the leg, the base body 110 wraps around the leg, and each strap 140 connects and fixes two sides of the base body 110 perpendicular to the direction of muscle fibers, so as to fix the base body 110 on the leg. In some embodiments, the size of each strap 140 in the plurality of straps 140 is individually adjustable, so that the wearing body can better adapt to the user's body, and ensure that the base body 110 can closely contact the user's skin, so as to ensure that the electrodes 120 can acquire the electromyographic signals.

[0064] In some embodiments, different parts of the base body 110 have different elasticities, so that different regions of the wearing body can respectively conform to the corresponding regions of the wearing part of the user's body, so as to ensure the signal acquisition effect. In some embodiments, the part of the base body 110 close to or surrounding the electrodes 120 can have greater elasticity, so that the electrodes 120 can conform to the user's skin, ensure the accuracy of signal acquisition, and also compensate for the reduced elasticity caused by the electrodes 120 and the waterproof layer 130, so that the base body 110 can conform to the lines of different positions on the user's body, and ensure the robust signal acquisition. In some embodiments, the base body 110 includes an overlapping region (e.g. the dashed region A in FIG. 6) in the direction perpendicular to the direction of muscle fibers (i.e. the direction perpendicular to the X direction in FIG. 6) with the plurality of electrodes 120, and the base body 110 includes a non-overlapping region (e.g. the region of the base body 110 outside the dashed region A in FIG. 6) in the direction perpendicular to the direction of muscle fibers (i.e. the direction perpendicular to the X direction in FIG. 6) with the plurality of electrodes 120. As shown in FIG. 6, the overlapping region and the non-overlapping region both extend along the direction perpendicular to the direction of muscle fibers (i.e. the direction perpendicular to the X direction in FIG. 6), and the overlapping region and the non-overlapping region are adjacently distributed along the direction of muscle fibers (i.e. the X direction in FIG. 6). For example, when the base body 110 forms a leg sleeve, in the wearing direction of the leg sleeve (e.g. the direction of muscle fibers of the target muscle, the X direction in FIG. 6), the base body 110 includes a ring-shaped overlapping region in the same dimension as the electrodes 120, and the region of the base body 110 in the X direction away from the electrodes 120 is the non-overlapping region. In some embodiments, in the direction perpendicular to the direction of muscle fibers, the part of the base body 110 in the same dimension as the electrodes 120 and the waterproof layer 130 has greater elasticity, so as to compensate for the reduced elasticity caused by the electrodes 120 and the waterproof layer 130, and make the wearing body better conform to the wearing part.

[0065] In the blood circulation of the human body, the blood return is easier near the heart and more difficult far from the heart. In order to reduce the influence of the wearer of the signal acquisition device 100 on the blood return in the wearing state, the elasticity of the distal end 112 of the base body 110 away from the user's heart is greater than the elasticity of the proximal end 111 of the base body 110 close to the user's heart in the wearing state. Through the greater elasticity of the distal end 112 of the base body 110, the extrusion degree of the base body 110 on the human body is reduced, and the blood return to the heart is facilitated, so as to improve the wearing comfort and safety of the signal acquisition device 100.

[0066] In some embodiments, in order to make the elasticity of the distal end 112 greater than the elasticity of the proximal end 111, the thickness of the distal end 112 can be greater than the thickness of the proximal end 111 during the integrated weaving. In other embodiments, in order to make the elasticity of the distal end 112 greater than the elasticity of the proximal end 111, the density of the base yarn of the distal end 112 can be greater than the density of the base yarn of the proximal end 111 during the integrated weaving.

[0067] Figure 7 is a structural schematic diagram of a fixing member according to some embodiments of the present specification. In some embodiments, referring to Figure 7, the base body 110 is fixed with a plurality of metal members, each of which corresponds to an electrode 120. Exemplarily, the metal members can include a first metal member 151 and a second metal member 152, the first metal member 151 is electrically connected with the first electrode 121, the second metal member 152 is electrically connected with the second electrode 122, and the first metal member 151 and the second metal member 152 are respectively magnetically detachably connected with a processing circuit in the external environment to realize data transmission of the first electrode 121, the second electrode 122 and the processing circuit. The metal members (including the first metal member 151 and the second metal member 152) can serve as an interface part for signal transmission, for signal transmission with the processing circuit, and the electrical signals collected by the electrodes 120 are transmitted to the processing circuit through the corresponding metal members for processing. The processing circuit can be used for signal processing, storage, transmission, etc. For example, the processing circuit can be used for processing signals collected by a plurality of electrodes 120. In some embodiments, the metal members can be realized in the form of metal buckles, metal rings, metal blocks, etc., and can be magnetically detachably connected with the processing circuit. When the metal members are magnetically connected with the processing circuit, the electrical signals collected by the electrodes 120 are transmitted to the processing circuit through the metal members.

[0068] In some embodiments, referring to FIG. 7, the base body 110 is fixed with a fixing member, which is connected with the metal member, for reinforcing the connection between the metal member and the base body 110. The number of the fixing members can be the same as that of the metal members, and each fixing member corresponds to one metal member. In some embodiments, the fixing member is fixed on the part of the base body 110 that is connected with the metal member. For example, the fixing member can include a lettering film, which is pressed on the part of the base body 110 that is connected with the metal member by a hot pressing process. In some embodiments, the area of the fixing member on the base body 110 is larger than that of the metal member on the base body 110, so as to avoid the problem of the base body 110 being broken when the metal member is repeatedly pulled during the disassembly and assembly of the processing circuit. For example, the fixing member can include a first fixing member 161 and a second fixing member 162, the first metal member 151 is connected with the first fixing member 161, and the second metal member 152 is connected with the second fixing member 162. In some embodiments, a connecting member 170 is arranged between the first fixing member 161 and the second fixing member 162, and the connecting member 170 connects the first fixing member 161 and the second fixing member 162. The first metal member 151 and the second metal member 152 are simultaneously connected with the processing circuit, and the distance between the first metal member 151 and the second metal member 152 changes due to the elasticity of the base body 110 in the wearing state and the moving state, which may cause the processing circuit to be damaged. By arranging the connecting member 170 between the first fixing member 161 and the second fixing member 162, the distance between the first fixing member 161 and the second fixing member 162, and thus the distance between the first metal member 151 and the second metal member 152, can be fixed, so as to avoid damaging the processing circuit. In some embodiments, the first fixing member 161, the second fixing member 162, and the connecting member 170 can be an integrated structure. For example, the first fixing member 161, the second fixing member 162, and the connecting member 170 can all be implemented as lettering films, and the two ends of the lettering films are pressed on the part of the base body 110 that is connected with the metal member by a hot pressing process to form the first fixing member 161 or the second fixing member 162, and the middle part of the lettering films is also pressed on the two ends (i.e., the first fixing member 161 and the second fixing member 162) of the lettering films by a hot pressing process. At this time, the first fixing member 161, the second fixing member 162, and the connecting member 170 can be regarded as a whole, the structure of which is stable and does not change, and the processing circuit connected with the whole can be prevented from being damaged.

[0069] The foregoing detailed description has set forth various embodiments of the devices and / or processes via the use of specific terminology. As such, the description herein does not limit the disclosure, but instead provides illustrative examples to enable a person of ordinary skill in the art to practice the disclosure. The disclosure is not limited to the embodiments described, but instead has wide applicability and can be practiced or carried out in various ways. Although the disclosure has been described with reference to specific exemplifying embodiments, it is understood that various modifications, improvements and changes can be made by those skilled in the art in light of this disclosure. Such modifications, improvements and changes are intended to fall within the spirit and scope of the disclosure.

[0070] Also, the use of "a" or "an" to describe an element of the application is merely for convenience and is not intended in an exclusive sense unless specifically stated otherwise. Furthermore, unless otherwise noted, the use of the singular includes the plural. The disclosure of elements of the application in the singular, such as "a" or "one", does not exclude the plural and vice versa unless otherwise explicitly stated.

[0071] Similarly, it is to be noticed that the term coupled, when used in the present specification, should not be interpreted as being limited to a direct connection only. Thus, the fact that two or more elements are coupled should not be understood as requiring direct connection.

[0072] In some embodiments, numerical descriptions of components, quantities of attributes are used. It should be understood that such numerical descriptions used in the description of embodiments, in some examples, are modified by the words "about", "approximately", or "generally". Unless otherwise stated, "about", "approximately", or "generally" indicates that the stated numerical value is allowed to vary by ±20%. Accordingly, in some embodiments, numerical parameters in the specification and claims are approximations, and can vary depending on the desired properties sought to be obtained by the particular embodiment. In some embodiments, numerical parameters are determined by the use of standard techniques. Although the numerical ranges and parameters setting forth the broad scope of the application in some embodiments are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. The numerical values set forth in the specific examples are provided to be as precise as reasonably possible. However, some variations may occur depending on the choice of the device used in the experiments.

[0073] Finally, it should be understood that the embodiments described herein are merely exemplary of the application. Other variations of the embodiments can also be possible and are within the scope of the application. Thus, for example, an alternative configuration of the embodiments of the application can be considered as consistent with the teachings of the application. Accordingly, the embodiments of the application are not limited to the embodiments explicitly introduced and described herein.

Claims

1. A signal acquisition device comprising a wearable body, the wearable body comprising: a plurality of electrodes configured to contact a user’s skin, the plurality of electrodes comprising a first electrode and a second electrode, the first electrode and the second electrode being configured to acquire an electromyography signal of a target muscle of the user, the first electrode and the second electrode being arranged along a direction of muscle fibers of the target muscle; and a base body configured to carry the plurality of electrodes and to position the plurality of electrodes at the target muscle; wherein the base body comprises base body yarns, the plurality of electrodes comprises conductive yarns, and the base body and the plurality of electrodes are integrally knitted. The wearable body further comprises a plurality of waterproof layers, the plurality of waterproof layers comprises waterproof insulating yarns, and the plurality of waterproof layers are integrally knitted with the base body and the plurality of electrodes. The plurality of waterproof layers are integrally knitted with the base body in a coplanar and parallel manner, and the base body is connected to a periphery side of the plurality of waterproof layers. Each of the plurality of electrodes is connected to an inner periphery side of a corresponding waterproof layer. Each of the plurality of electrodes is integrally knitted with a corresponding waterproof layer in a coplanar and parallel manner.

2. The signal acquisition apparatus of claim 1, wherein, In a direction towards the user’s skin, each of the plurality of electrodes protrudes from a corresponding waterproof layer.

3. The signal acquisition apparatus of claim 2, wherein, Each of the plurality of electrodes is integrally knitted to a side of the waterproof layer facing the user’s skin.

4. The signal acquisition apparatus of claim 3, wherein, The waterproof layer is integrally knitted to an inner surface of the base body facing the user’s skin.

5. The signal acquisition apparatus of claim 4, wherein, The plurality of electrodes are integrally knitted to a side of the waterproof layer facing away from the base body.

6. The signal acquisition apparatus of claim 4, wherein, The plurality of waterproof layers are integrally knitted in a concave-convex shape; or the plurality of electrodes are integrally knitted in a concave-convex shape.

7. The signal acquisition apparatus of claim 3, wherein, In a worn state, the base body comprises a proximal end close to a user’s heart and a distal end away from the user’s heart, and the distal end has a greater elasticity than the proximal end.

8. The signal acquisition apparatus of claim 2, wherein, The distal end has a greater thickness than the proximal end.

9. The signal acquisition apparatus of claim 8, wherein, The base body yarns of the distal end have a greater density than the base body yarns of the proximal end.

10. The signal acquisition apparatus of claim 8, wherein, Each of the plurality of electrodes comprises a first region and a second region, the first region is connected to the base body through the second region, the first region contacts the user’s skin to acquire an electrical signal, and the second region is electrically insulated from the user’s skin.

11. The signal acquisition apparatus of claim 3 or 8, wherein, In a direction towards the user’s skin, the first region protrudes from the second region.

12. The signal acquisition apparatus of claim 1, wherein, The conductive yarns of the second region are covered with a waterproof insulating film.

13. The signal acquisition apparatus of claim 12, wherein, The conductive yarns are made of at least conductive fibers wrapped around elastic fibers; or the conductive yarns are made of at least conductive fibers wrapped around an elastic film.

14. The signal acquisition apparatus of claim 12, wherein, The base body forms a leg sleeve, the leg sleeve is elastically stretchable along a radial direction thereof, and the plurality of electrodes are configured to acquire electromyography signals of a back side of a leg of the user.

15. The signal acquisition apparatus of claim 1, wherein, The wearable body comprises a plurality of straps connected to the base body, the plurality of straps are arranged along the direction of the muscle fibers, and in a worn state, a size of each of the plurality of straps is individually adjustable.

16. The signal acquisition apparatus of claim 15, wherein, ​ 17. The signal acquisition apparatus of claim 15, wherein, ​ 18. The signal acquisition apparatus of claim 1, wherein, ​ 19. The signal acquisition apparatus of claim 1, wherein, ​ 20. The signal acquisition apparatus of claim 1, wherein, ​ 21. The signal acquisition apparatus of claim 1, wherein, The base body comprises a coincident area overlapping the plurality of electrodes in a direction perpendicular to the direction of the muscle fibers, the base body comprises a non-coincident area staggered with the plurality of electrodes in a direction perpendicular to the direction of the muscle fibers, the coincident area and the non-coincident area extend in the direction perpendicular to the direction of the muscle fibers, the coincident area and the non-coincident area are adjacently distributed in the direction of the muscle fibers, and the elasticity of the coincident area is greater than the elasticity of the non-coincident area.

22. The signal acquisition apparatus of claim 1, wherein, The base body is fixed with a first metal piece and a second metal piece, the first metal piece is electrically connected with the first electrode, the second metal piece is electrically connected with the second electrode, and the first metal piece and the second metal piece are respectively magnetically detachably connected with a processing circuit to realize data transmission between the first electrode, the second electrode and the processing circuit.

23. The signal acquisition apparatus of claim 22 wherein, The base body is fixed with a first fixing piece and a second fixing piece, the first metal piece is connected with the first fixing piece, the second metal piece is connected with the second fixing piece, and a connecting piece is arranged between the first fixing piece and the second fixing piece.

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