Bionic skin

Abstract

The embodiment of the invention discloses a bionic skin, which comprises a uniform humidity layer, a third detection layer and a heating layer which are stacked, the third detection layer is arranged between the uniform humidity layer and the heating layer, the third detection layer is used for detecting the surface pressure of the bionic skin, the uniform humidity layer is used for uniformizing the surface humidity of the bionic skin, and the heating layer is used for heating the heating layer. The heating layer is used for adjusting the actual temperature value of the surface of the bionic skin, and the heating layer can deform. Therefore, through cooperation of the third detection layer, the humidity equalizing layer and the heating layer, multiple functions of pressure sensing, humidity adjusting and temperature adjusting can be achieved, and therefore the complex and diversified functions of human skin can be simulated. Compared with a single simulation function, the bionic skin provided by the invention can realize simulation of multiple functions, so that the real state of the human skin after the wearable product is worn can be better simulated, the wearable product can be improved, and the use comfort of a user of the wearable product can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bionic skin manufacturing, and more particularly to a bionic skin. BACKGROUND

[0002] With the development of science and technology, virtual reality devices, augmented reality devices, mixed reality devices, smart headsets, headsets, smart glasses, smart straps and other wearable products have gradually become popular. In order to improve the comfort of users wearing, it is necessary to test the comfort in the wearing state.

[0003] At present, bionic skin can be used to simulate the test of user wearing comfort. However, the existing bionic skin can usually only simulate a single function, and the structure is simple, and cannot realize the complex multi-modal perception of real human skin. SUMMARY

[0004] In view of the above shortcomings of the prior art, the purpose of the present application is to provide a new type of bionic skin.

[0005] According to one aspect of the present application, a bionic skin is provided, comprising: A uniform wetting layer, a third detection layer and a heating layer are arranged in layers, the third detection layer is arranged between the uniform wetting layer and the heating layer, the third detection layer is used to detect the surface pressure of the bionic skin, the uniform wetting layer is used to uniformly wet the surface of the bionic skin, and the heating layer is used to adjust the actual temperature value of the surface of the bionic skin, and the heating layer can be deformed.

[0006] Optionally, a first uniform temperature layer is further included, which is arranged on the side of the heating layer close to the uniform wetting layer.

[0007] Optionally, a second uniform temperature layer is further included, which is arranged on the side of the heating layer away from the first uniform temperature layer.

[0008] Optionally, a second detection layer is further included, which is arranged on the side of the heating layer close to the third detection layer, the second detection layer is used to detect the actual temperature value, and the second detection layer is in communication connection with the heating layer, so that the heating layer can adjust its heating state based on the deviation between the actual temperature value detected by the second detection layer and a second preset temperature value.

[0009] Optionally, a waterproof layer is further included, which is arranged between the third detection layer and the uniform wetting layer.

[0010] Optionally, the uniform wetting layer comprises a fourth substrate and a first material, the fourth substrate is arranged close to the third detection layer, and the first material is arranged on the fourth substrate and forms a hydrophobic structure, and the hydrophobic structure has uniform hydrophobic channels.

[0011] Optionally, the fourth substrate is a mesh substrate, the first material is a hydrophobic filling material, the hydrophobic filling material is arranged in mesh holes of the mesh substrate, and a plurality of the mesh holes form the hydrophobic channels. Alternatively, the fourth substrate is a rough substrate, and a plurality of rough parts on the surface of the rough substrate form the hydrophobic channels.

[0012] Optionally, the heat generation layer comprises a fifth substrate, and the fifth substrate is a deformable heat generation substrate.

[0013] Optionally, the heat generation layer comprises a sixth substrate and a heat generation circuit arranged on the sixth substrate, and the sixth substrate is deformable.

[0014] Optionally, the sixth substrate is a deformable heat generation substrate. And / or, the heat generation circuit has a serpentine structure, a runway structure, a stepped structure, a corrugated structure or a honeycomb grid structure.

[0015] One technical effect of the embodiment of the present disclosure is that: The bionic skin provided by the present application can realize pressure sensing, humidity regulation and temperature regulation through the cooperation of the third detection layer, the uniform wetting layer and the heat generation layer, thereby being capable of simulating the complex and diverse functions of human skin. Compared with single simulation function, the bionic skin provided by the present application can realize simulation of multiple functions, thereby being capable of better simulating the real state of human skin after wearing a wearable product, helping to improve the wearable product and improve the user comfort of the wearable product.

[0016] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 is a schematic diagram of a first bionic skin of the embodiment of the present disclosure; Figure 2 is a schematic diagram of a second bionic skin of the embodiment of the present disclosure; Figure 3 is a schematic diagram of a third bionic skin of the embodiment of the present disclosure; Figure 4 is a schematic diagram of a fourth kind of bionic skin of an embodiment of the present disclosure; Figure 5 is a schematic diagram of a fifth kind of bionic skin of an embodiment of the present disclosure; Figure 6 is a schematic diagram of a sixth kind of bionic skin of an embodiment of the present disclosure; Figure 7 is a schematic diagram of a heating layer of an embodiment of the present disclosure; Figure 8 is a schematic diagram of a first kind of heating line of an embodiment of the present disclosure; Figure 9 is a schematic diagram of a second kind of heating line of an embodiment of the present disclosure.

[0019] Legend of reference signs: 1, first detection layer; 2, uniform wetting layer; 3, heating layer; 31, sixth base; 32, heating line; 33, insulation layer; 34, heat conduction layer; 35, buffer layer; 4, first uniform temperature layer; 5, second uniform temperature layer; 6, second detection layer; 7, third detection layer. DETAILED DESCRIPTION

[0020] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0021] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the application, its application, or uses.

[0022] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0023] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of exemplary embodiments can have different values.

[0024] Note that like reference numerals and letters indicate like items in the following drawings and that, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0025] The present application provides a bionic skin, which is suitable for the fields of robots, prostheses, wearable devices, etc.

[0026] As shown in Figures 1 to 6 the bionic skin provided by the embodiment of the present application comprises: The even-wetting layer 2, the third detection layer 7 and the heating layer 3 are stacked, the third detection layer 7 is arranged between the even-wetting layer 2 and the heating layer 3, the third detection layer 7 is used for detecting the surface pressure of the bionic skin, the even-wetting layer 2 is used for evenly wetting the surface of the bionic skin, the heating layer 3 is used for adjusting the actual temperature value of the surface of the bionic skin, and at least the heating layer 3 can be deformed.

[0027] As shown in Figure 1 , the even-wetting layer 2 can be located on the outside of the bionic skin to simulate the perspiration process of the human body. The even-wetting layer 2 can be made of porous materials such as foamed metal and fiber fabric, so that the even-wetting layer 2 has good air permeability and moisture absorption. The internal structure can also be designed with micro-channels or pore structures, which can help air circulation and uniform distribution of water.

[0028] In one embodiment, the even-wetting layer 2 can be arranged from top to bottom or from outside to inside to include a hydrophobic film, a superabsorbent fiber felt and a moisture-conducting fabric, so that the three can be used together to achieve the effects of moisture absorption and even wetting, and also prevent the third detection layer 7 from being abnormal due to liquid penetration. The hydrophobic film can be a polytetrafluoroethylene film.

[0029] In one embodiment, the even-wetting layer 2 can also be embedded with heat-conducting materials such as graphene and copper foil, which can improve the heat conduction efficiency of the even-wetting layer 2, so as to ensure that the heat generated by the heating layer 3 can be quickly and uniformly transmitted to the surface of the bionic skin.

[0030] As shown in Figures 1 to 6 , the heating layer 3 can use flexible electrothermal film, carbon fiber heating wire or PTC (positive temperature coefficient) thermistor as the heating element. These materials have the advantages of high heating efficiency, fast response speed and good safety, which can help simulate the heating situation of the human body under different motion states.

[0031] In one embodiment, the heating layer 3 can be built-in with an over-temperature protection device. When the temperature exceeds the set threshold, the over-temperature protection device can automatically cut off the power supply or reduce the heating amount, so as to prevent overheating and ensure the safety of the bionic skin.

[0032] As shown in Figures 1 to 6 , the third detection layer 7 is used for detecting the surface pressure of the bionic skin to simulate the actual pressure situation of the human skin after wearing the wearable product. The third detection layer 7, the heating layer 3 and the even-wetting layer 2 cooperate with each other, so that the bionic skin of the embodiment has the functions of temperature adjustment, humidity adjustment and pressure detection.

[0033] The third detection layer 7 can be made of a piezoresistive material or a piezoelectric composite material, for example, a doped nanoparticle polydimethylsiloxane (PDMS) or a conductive fiber fabric, so that the resistance or voltage change thereof is only related to the surface pressure.

[0034] In addition, the temperature field of the heating layer 3 and the humidity field of the humidity layer 2 can be isolated by material selection and structural isolation, for example, by adding a thermal resistance layer or a hydrophobic coating, so as to reduce the interference of the third detection layer 7, thereby ensuring the detection accuracy of the third detection layer 7.

[0035] In addition, the third detection layer 7 is arranged between the heating layer 3 and the humidity layer 2, which can avoid mechanical friction or impact caused by direct exposure of the third detection layer 7 to the outside. The heating layer 3 serves as a support layer, which can disperse local pressure, so that the third detection layer 7 is more uniform in stress and reduces fatigue damage.

[0036] Therefore, the bionic skin provided by the present application can realize pressure sensing, humidity regulation and temperature regulation by the cooperation of the third detection layer 7, the humidity layer 2 and the heating layer 3, so as to simulate the complex and diverse functions of human skin. Compared with single simulation function, the bionic skin provided by the present application can realize simulation of multiple functions, so as to better simulate the real state of human skin after wearing a wearable product, which helps to improve the wearable product and improve the user comfort of the wearable product.

[0037] On this basis, the heating layer 3 can be deformed. The deformation of the heating layer 3 includes but is not limited to stretching, compression and bending. For example, the substrate of the heating layer 3 can be made of an elastic material, so as to adapt to different biological models by using the elastic deformation of the elastic material; or the substrate of the heating layer 3 can be made of a stretchable material such as a flexible material, so as to adapt to different biological models by using the plastic deformation of the stretchable material, so that the bionic skin with the heating layer 3 can better fit on the biological model and form a close fit with the surface of the biological model, which helps the bionic skin to better simulate the real feeling of human skin.

[0038] For example, when used for testing VR glasses, the bionic skin with the heating layer 3 can better fit on the eye area of the human head model, which helps to simulate the real feeling of human body wearing VR glasses, so that the test result of the wearing comfort of VR glasses is closer to the real feeling of human actual wearing, thereby helping the design improvement of VR glasses.

[0039] When used for testing a smart watch, the bionic skin with the heating layer 3 can better fit on the wrist area of the hand model, helping to simulate the real feeling when a human wears a smart watch, so that the test result of the wearing comfort of the smart watch is closer to the real feeling of the actual wearing of the human body, thereby helping to improve the design of the smart watch.

[0040] Optionally, the uniform wetting layer 2 and the heating layer 3 can both be deformed, that is, the substrate of the uniform wetting layer 2 can also be made of elastic or stretchable material, so that the bionic skin with the uniform wetting layer 2 and the heating layer 3 can adapt to the irregular curved surface of the model and tightly fit on the surface of the biological model, helping the bionic skin to better simulate the real feeling of human skin.

[0041] Optionally, the third detection layer 7 can include a third substrate and a plurality of pressure sensors arranged on the third substrate.

[0042] The third substrate can be made of elastic or stretchable material, so that the third detection layer 7 with the third substrate can better fit on the functional layer such as the heating layer 3.

[0043] In one embodiment, the plurality of pressure sensors can be arranged in an array.

[0044] Specifically, the plurality of pressure sensors arranged in an array can enhance the detection range of the third detection layer 7, help to improve the arrangement density of the pressure sensors, and also help to improve the detection capability and detection accuracy of the third detection layer 7. In addition, the plurality of pressure sensors arranged in a multi-point array can also adapt to the deformable design of the functional layer such as the heating layer 3, help to improve the sensing accuracy, response speed and compatibility of the bionic skin, and also help to simulate the real feeling of human skin.

[0045] Optionally, a first uniform temperature layer 4 is further included, and the first uniform temperature layer 4 is arranged on the side of the heating layer 3 close to the uniform wetting layer 2.

[0046] As shown in Figure 2 The first uniform temperature layer 4 can form an efficient heat conduction interface. The first uniform temperature layer 4 can quickly absorb the heat generated by the heating layer 3 through its high thermal conductivity, for example, the first uniform temperature layer 4 can be made of graphite sheet, metal foil or phase change material, and the heat can be diffused in both horizontal and vertical directions of the bionic skin through the uniformly distributed heat conduction paths in the layer, avoiding local overheating.

[0047] In this way, the bidirectional diffusion of heat by the first uniform temperature layer 4 can make the heat transfer in the vertical direction of the heating layer 3, that is, the longitudinal direction of the thickness of the bionic skin, more gentle and uniform, while the horizontal diffusion ability is enhanced, thereby reducing the temperature difference between the heat source area and the non-heat source area, and improving the uniformity of the overall temperature of the bionic skin.

[0048] The uniform moisture layer 2 is typically used to even out the surface humidity of biomimetic skin, and its performance may be affected by temperature. For example... Figure 2 As shown, the first temperature equalization layer 4 is placed on the side of the heating layer 3 close to the humidity equalization layer 2, so that the first temperature equalization layer 4 can actively regulate the temperature of the area where the humidity equalization layer 2 is located, and maintain the surface temperature of the humidity equalization layer 2 above the dew point by buffering heat transfer. This can avoid the risk of humidity regulation failure or condensation due to local overheating, and help maintain the stability of the humidity equalization layer 2's moisture absorption and release functions.

[0049] Optionally, it also includes a second temperature equalization layer 5, which is disposed on the side of the heating layer 3 away from the first temperature equalization layer 4.

[0050] like Figure 3 As shown, the bionic skin of this embodiment can form a double-layer temperature equalization structure of a first temperature equalization layer 4, a heating layer 3, and a second temperature equalization layer 5. That is, the heating layer 3 can be sandwiched between the first temperature equalization layer 4 and the second temperature equalization layer 5, which helps to further improve the temperature equalization effect of the bionic skin and facilitates the simulation of the temperature equalization process of human skin.

[0051] Optionally, the first temperature equalization layer 4 and the second temperature equalization layer 5 are made of the same material.

[0052] In one embodiment, the first temperature equalization layer 4 and the second temperature equalization layer 5 can be made of the same material, such as graphene, which can achieve double-layer temperature equalization, facilitate the replacement of the first temperature equalization layer 4 and the second temperature equalization layer 5, and reduce the manufacturing difficulty of bionic skin.

[0053] In one embodiment, the first temperature equalization layer 4 and the second temperature equalization layer 5 can be made of elastic or stretchable materials, so that both the first temperature equalization layer 4 and the second temperature equalization layer 5 can deform. This allows the bionic skin with the first temperature equalization layer 4 and the second temperature equalization layer 5 to adapt to the irregular curved surface of the biological model and fit closely to the surface of the biological model, which helps the bionic skin to better simulate the real feeling of human skin.

[0054] Optionally, the first temperature equalization layer 4 and the second temperature equalization layer 5 have the same thickness, so that the temperature equalization capabilities of the first temperature equalization layer 4 and the second temperature equalization layer 5 are consistent.

[0055] Optionally, it also includes a second detection layer 6, which is located on the side of the heating layer 3 near the third detection layer 7. The second detection layer 6 is used to detect the actual temperature value and is communicatively connected to the heating layer 3, so that the heating layer 3 can adjust its heating state based on the deviation between the actual temperature value detected by the second detection layer 6 and the second preset temperature value.

[0056] Specifically, the second detection layer 6 can include a second substrate and a plurality of temperature sensors disposed on the second substrate. The second substrate can be attached to the heat generation layer 3 or the first uniform temperature layer 4, and the sensing ends of the plurality of temperature sensors are directed towards the heat generation layer 3 or the first uniform temperature layer 4, which facilitates real-time detection of the surface temperature of the bionic skin.

[0057] The second detection layer 6 is communicatively connected to the heat generation layer 3 by wired or wireless means, so that the heat generation layer 3 can adjust the heat generation state of the heat generation layer 3, such as starting heat generation, stopping heat generation, and adjusting the heat generation power, in a timely manner based on the deviation between the actual temperature value of the surface of the bionic skin detected by the second detection layer 6 and the second preset temperature value, thereby enabling closed-loop control of the heat generation layer 3, facilitating simulation of different states of human skin, and helping to optimize the wearing comfort of wearable products.

[0058] The second preset temperature value can be set according to simulation requirements, such as the wearing comfort test requirements of wearable products. For example, when it is necessary to test the comfort of a wearable product at a certain environmental temperature, the bionic skin simulates the temperature value of human skin at the environmental temperature, and therefore the second preset temperature value is set to the corresponding temperature value of human skin at the environmental temperature. When it is necessary to test the comfort of a wearable product in a motion state, the bionic skin simulates the temperature value of human skin in the motion state, and therefore the second preset temperature value is set to the corresponding temperature value of human skin in the motion state.

[0059] For example, when there is a negative deviation between the actual temperature value detected by the second detection layer 6 and the second preset temperature value, and the negative deviation exceeds the error range, i.e., the actual temperature value of the bionic skin is less than the second preset temperature value, the heat generation layer 3 can be started to generate heat, so that the heat generation layer 3 generates heat to raise the surface temperature of the bionic skin until it meets the second preset temperature value. If the negative deviation between the two is large, i.e., the actual temperature value of the bionic skin is extremely low, the heat generation power of the heat generation layer 3 can be increased to speed up heat generation; if the negative deviation between the two is small, i.e., the actual temperature value of the bionic skin is slightly low, the heat generation power of the heat generation layer 3 can be reduced to slow down heat generation.

[0060] When there is no negative deviation between the actual temperature value detected by the second detection layer 6 and the second preset temperature value, or there is a negative deviation but the negative deviation is within the error range, i.e., the actual temperature value of the bionic skin is greater than or equal to the second preset temperature value, the heat generation of the heat generation layer 3 can be stopped.

[0061] When the liquid in the water tank module in communication with the uniform wetting layer 2 enters the uniform wetting layer 2 during the test of the wearable product, the uniform wetting layer 2 can uniformly distribute the liquid on the surface of the bionic skin by using its own structure to achieve the uniform wetting effect of the surface of the bionic skin, so as to simulate the uniform diffusion process of sweat on the skin surface after the human skin sweats. The liquid is a liquid simulating sweat.

[0062] The second detection layer 6 of the bionic skin can be connected in communication with the water tank module in a wired or wireless manner, so that the water tank module can adjust the water outlet state of the water tank module in a timely manner based on the deviation between the actual temperature value of the surface of the bionic skin detected by the second detection layer 6 and the first preset temperature value, such as starting water outlet, stopping water outlet, adjusting water outlet amount and adjusting water outlet rate, so as to simulate the sweating process of the human skin and realize the real and accurate simulation of the human wearing the wearable product, and provide quantitative data for the design improvement of the wearable product.

[0063] The first preset temperature value is the skin temperature value corresponding to the thermal equilibrium of the human skin when the human skin is in a heating and cooling state. When the temperature value of the human skin is the first preset temperature value, the human skin is in a static and comfortable state, and no sweating phenomenon occurs.

[0064] When there is a positive deviation between the actual temperature value of the surface of the bionic skin detected by the second detection layer 6 and the first preset temperature value and the positive deviation exceeds the error range, that is, the actual temperature value of the bionic skin is greater than the first preset temperature value, the thermal equilibrium of the human skin is broken and needs to be adjusted by sweating, at which time the water tank module can be started to simulate the sweating process of the human skin. When the positive deviation between the two is large, that is, the actual temperature value of the bionic skin is very high, the water outlet amount of the water tank module or the water outlet rate can be increased to simulate the sweating process under the condition of very high human skin temperature; when the positive deviation between the two is small, that is, the actual temperature value of the bionic skin is high, the water outlet amount of the water tank module or the water outlet rate can be reduced to simulate the sweating process under the condition of high human skin temperature.

[0065] When there is no positive deviation between the actual temperature value of the surface of the bionic skin detected by the second detection layer 6 and the first preset temperature value, or there is a positive deviation but the positive deviation is within the error range, that is, the actual temperature value of the bionic skin is less than or equal to the first preset temperature value, the human skin will not sweat, and the bionic skin does not need to simulate human sweating, at which time the water tank module can be closed to stop water outlet.

[0066] For example, when the environment temperature of the environment where the bionic skin is located is high, the bionic skin simulates the human skin temperature value at the environment temperature, at this time, the actual temperature value of the bionic skin is greater than the first preset temperature value, thus the bionic skin needs to simulate human sweating. For another example, when the human body is in a motion state, the human skin temperature value will increase, the bionic skin simulates the human skin temperature value of the human body in the motion state, at this time, the actual temperature value of the bionic skin is greater than the first preset temperature value, thus the bionic skin needs to simulate human sweating.

[0067] Meanwhile, the water tank module can adjust its water output state based on the deviation between the actual temperature value of the bionic skin surface detected by the second detection layer 6 and the first preset temperature value, so as to simulate the human skin to realize the dual functions of humidity regulation and temperature regulation. That is, according to the relationship between the actual temperature value of the bionic skin surface detected by the second detection layer 6 and the second preset temperature value, and the relationship between the actual temperature value and the first preset temperature value, the bionic skin can realize the simulation of the corresponding process.

[0068] Specifically, when there is a negative deviation between the actual temperature value detected by the second detection layer 6 and the second preset temperature value and the negative deviation exceeds the error range, and there is a positive deviation between the actual temperature value and the first preset temperature value and the positive deviation exceeds the error range, that is, the actual temperature value of the bionic skin is between the first preset temperature value and the second preset temperature value, at this time, the heating layer 3 can be started to heat, and the water tank module can be started to output water. At this time, the sweating process and the heating process are simulated.

[0069] When there is a negative deviation between the actual temperature value detected by the second detection layer 6 and the second preset temperature value and the negative deviation exceeds the error range, and there is no positive deviation between the actual temperature value and the first preset temperature value or there is a positive deviation but the positive deviation is within the error range, that is, the actual temperature value of the bionic skin is less than or equal to the first preset temperature value and the actual temperature value of the bionic skin is less than the second preset temperature value, at this time, the heating layer 3 can be started to heat, and the water tank module can be closed to stop water output. At this time, only the heating process is simulated.

[0070] When there is no negative deviation between the actual temperature value detected by the second detection layer 6 and the second preset temperature value or there is a negative deviation but the negative deviation is within the error range, and there is a positive deviation between the actual temperature value and the first preset temperature value and the positive deviation exceeds the error range, that is, the actual temperature value of the bionic skin is greater than or equal to the second preset temperature value and the actual temperature value of the bionic skin is greater than the first preset temperature value, at this time, the heating layer 3 can be stopped to heat, and the water tank module can be started to output water. At this time, only the sweating process is simulated.

[0071] When there is no negative deviation between the actual temperature value detected by the second detection layer 6 and the second preset temperature value, or the negative deviation is within the error range, and at the same time there is no positive deviation between the actual temperature value and the first preset temperature value, or the positive deviation is within the error range, that is, the actual temperature value of the bionic skin is between the second preset temperature value and the first preset temperature value, at this time, the heating of the heating layer 3 can be stopped, and the water tank module is closed to stop water output.

[0072] Optionally, a waterproof layer is further included, which is arranged between the third detection layer 7 and the moisturizing layer 2. The waterproof layer can isolate the water stains or water vapor in the moisturizing process of the moisturizing layer 2, so as to ensure the detection reliability and detection accuracy of the third detection layer 7.

[0073] In addition, after the bionic skin is used for a period of time, a large amount of liquid will be left in the moisturizing layer 2, which will cause the moisturizing effect to be not very ideal. The design of the waterproof layer facilitates the removal and replacement of the internal moisturizing layer 2, which helps to ensure that the bionic skin has a good moisturizing effect.

[0074] Optionally, the moisturizing layer 2 includes a fourth substrate and a first material, the fourth substrate is arranged close to the third detection layer 7, and the first material is arranged on the fourth substrate and forms a hydrophobic structure having uniform hydrophobic channels.

[0075] The fourth substrate can be made of a silicon rubber material, such as polydimethylsiloxane (PDMS) or thermoplastic polyurethane elastomer (TPU), and the thickness of the fourth substrate is controlled to enable the fourth substrate to have both deformability and structural stability by using the elastic deformation characteristics of the silicon rubber material.

[0076] The fourth substrate can be pretreated by a method such as plasma treatment or ultraviolet ozone cleaning to introduce hydrophilic groups such as hydroxyl groups or carboxyl groups on the surface of the fourth substrate, so as to enhance the adhesion of the first material.

[0077] The first material can be a fluorinated polymer, such as polytetrafluoroethylene (PTFE), or a silane-based hydrophobic agent, such as octadecyltrichlorosilane (OTS), or a low-surface-energy material; the first material can also be a porous hydrophobic material, all of which have a large contact angle. When the first material formed by the above-mentioned materials is combined with the fourth substrate, an air layer can be formed on the surface of the first material, so that water droplets form a spherical shape on the surface of the first material, so that the moisturizing layer 2 has a large contact angle and exhibits excellent hydrophobic properties.

[0078] In one embodiment, the hydrophobic structure on the surface of the fourth substrate can be formed by a spraying method.

[0079] In one embodiment, the hydrophobic structure on the surface of the fourth substrate can be formed by a chemical vapor deposition method.

[0080] The second detection layer 6 can be arranged on the side of the heat generating layer 3 close to the uniform wetting layer 2, and the second detection layer 6 is used to detect the actual temperature value.

[0081] At this time, the prepared uniform wetting layer 2 can be bonded to the surface of the second detection layer 6 by hot pressing or optical transparent adhesive, and the hydrophobic channel faces outward, that is, away from the second detection layer 6, so as to avoid the liquid of the uniform wetting layer 2 from penetrating into the second detection layer 6 and affecting the detection accuracy and detection reliability of the second detection layer 6. The bonding surface of the second detection layer 6 can be pre-treated to be waterproof, so as to further improve the detection accuracy and detection reliability.

[0082] In one embodiment, a fourth substrate made of TPU with a certain elongation at break and PDMS can also be selected, and a fourth substrate with a certain thickness can be prepared by a solution casting method. Then, a low modulus fluorinated acrylate copolymer can be used as the first material to form an elastic hydrophobic layer with a predetermined thickness by a spin coating method.

[0083] The above-mentioned methods can form a hydrophobic structure, so that the surface contact angle of the uniform wetting layer 2 is large, so as to achieve excellent hydrophobic effect, so as to simulate human perspiration, and at the same time, the hydrophobic channel of the uniform wetting layer 2 can guide the liquid to diffuse outward, that is, away from the second detection layer 6, so as to avoid the liquid from penetrating into the second detection layer 6, avoid signal drift or circuit short circuit caused by humidity, and improve the long-term stability and reliability of the bionic skin in a humid environment.

[0084] In addition, the uniform hydrophobic channel in the hydrophobic structure can guide the liquid to diffuse uniformly along the preset path, avoid local humidity accumulation, and help to more realistically simulate the human perspiration process.

[0085] Optionally, the fourth substrate can be deformed, and the deformation of the fourth substrate includes but is not limited to stretching, compression and bending. For example, the fourth substrate can be made of an elastic material, so as to adapt to the attachment of different biological models by using the elastic deformation of the elastic material; or the fourth substrate can be made of a flexible material or a stretchable material, so as to adapt to the attachment of different biological models by using the plastic deformation of the stretchable material, so that the bionic skin with the uniform wetting layer 2 can better fit on the biological model and form a close fit with the surface of the biological model, which helps the bionic skin to better simulate the real feeling of human skin.

[0086] Optionally, the fourth substrate is a mesh substrate, the first material is a hydrophobic filling material, the hydrophobic filling material is arranged in the mesh holes of the mesh substrate, and a plurality of mesh holes form a hydrophobic channel.

[0087] Specifically, the polymer fibers can be woven to form a mesh substrate, and the mesh holes can be regular polygons such as regular quadrilaterals, regular pentagons, regular hexagons, etc., so as to improve the hydrophobic uniformity and consistency of the formed hydrophobic structure. The edges of the mesh substrate can be heat-sealed to prevent the fibers from loosening, and the side close to the third detection layer 7 is a flat woven surface, so as to facilitate the attachment of the uniform wetting layer 2.

[0088] The first material can be a hydrophobic modified epoxy resin, and polytetrafluoroethylene powder can be added to improve the hydrophobicity. The mixed material can be filled into the mesh holes of the mesh substrate by silk screen printing, and the filling thickness is consistent with the substrate thickness, so as to avoid protrusions. After molding and assembling, the filled material is cured by baking, so as to form a composite structure of "mesh substrate skeleton + mesh hole hydrophobic filling".

[0089] In this way, the hydrophobic channels formed by the three-dimensional interconnected porous structure of the mesh substrate provide multiple directional flow channels for the liquid. The liquid spreads on the surface and pores of the mesh substrate at the same time, forming a continuous wetting layer, avoiding local accumulation caused by single-direction flow. In combination with the hydrophobic filling material, the surface energy of the inner wall of the mesh hole is reduced, the adhesion between the liquid and the inner wall of the mesh hole is reduced, the liquid is in a rolling state in multiple mesh holes, and the liquid is evenly distributed rather than stagnated, thereby realizing the uniform wetting effect of the uniform wetting layer 2.

[0090] In one embodiment, a flexible graphite mesh made of multiple layers of graphene stacked and pressed can also be selected as the mesh substrate, and the first material can be a hydrophobic ion gel. The hydrophobic ion gel is embedded in the flexible graphite mesh to form a support and heat conduction network, so that the fourth substrate can have deformability and high uniform wetting capacity, which is helpful for the attachment of the bionic skin.

[0091] In one embodiment, a heat conduction and moisture conduction network constructed by graphene and carbon nanotubes can also be selected as the mesh substrate, and the first material can be a silicone rubber matrix, so as to form a "three-dimensional double-network reinforced skeleton + silicone rubber matrix composite" structure.

[0092] Optionally, the fourth substrate is a rough substrate, and a plurality of rough parts on the surface of the rough substrate form the hydrophobic channels.

[0093] Specifically, grooves, pores and other rough parts can be formed on the surface of an elastic material such as silica gel or a stretchable material by mold pressing or other methods, so as to obtain a rough substrate. By uniformly arranging the rough parts, uniform hydrophobic channels can also be formed on the surface of the rough substrate. The side close to the third detection layer 7 is a smooth surface, so as to facilitate the attachment of the uniform wetting layer 2; and the side away from the third detection layer 7 is a rough surface for carrying the hydrophobic material.

[0094] Optionally, the first material is a low surface energy material, and the low surface energy material is arranged on the surface of the rough substrate.

[0095] Specifically, a fluorine-based low surface energy material or a silicon-based low surface energy material, etc. can be selected as the first material and uniformly coated on the rough surface of the rough substrate by spraying or the like. The rough surface can be subjected to plasma treatment before coating, which helps to improve the adhesion of the low surface energy material and avoid falling off. After coating, the molding and assembly are baked and cured to form a hydrophobic structure of "rough substrate + low surface energy coating", which helps to improve the uniform wetting effect of the uniform wetting layer 2.

[0096] Optionally, the rough part includes grooves and / or pores.

[0097] In this way, the capillary force generated by the micro-nano grooves or pores formed on the surface of the rough substrate can guide the directional flow of the liquid along the uniform hydrophobic channel formed by the plurality of rough parts. The grooves can be rectangular, circular, etc., and the pores can be rectangular, circular, etc.

[0098] In addition, the low surface energy material on the surface can reduce the interfacial tension between the low surface energy material and the liquid, so that the liquid is more likely to slide than to adhere, thereby improving the uniform wetting effect of the uniform wetting layer 2.

[0099] Optionally, the fourth substrate is a gradient hydrophobic substrate, the hydrophobic performance of the gradient hydrophobic substrate gradually decreases from the edge to the center of the gradient hydrophobic substrate, and the surface of the gradient hydrophobic substrate forms a hydrophobic channel. In this way, the liquid can be guided to diffuse from the high-hydrophobic edge to the low-hydrophobic center, avoiding the accumulation of water vapor at the edge, which helps to improve the uniform wetting effect of the uniform wetting layer 2.

[0100] In one embodiment, the fourth substrate can also adopt a double-layer composite structure: the lower layer structure is a high-wetness substrate, which is arranged close to the third detection layer 7; and the upper layer structure is a gradient hydrophobic substrate, which can be designed to have a gradually decreasing hydrophobic performance from the edge to the center, and the low surface energy material is sprayed on the surface of the upper layer gradient hydrophobic substrate. In this way, the lower layer structure can quickly conduct the liquid, and the upper layer structure can guide the liquid to diffuse from the high-hydrophobic edge to the low-hydrophobic center, avoiding the accumulation of water vapor at the edge, which helps to improve the uniform wetting effect of the uniform wetting layer 2.

[0101] Optionally, the thickness of the uniform wetting layer 2 ranges from 2 to 4 mm.

[0102] Optionally, the thickness of the heating layer 3 ranges from 1 to 2 mm.

[0103] Specifically, the thickness of the uniform wetting layer 2 ranges from 2 to 4 mm, and the thickness of the heating layer 3 ranges from 1 to 2 mm, which can ensure reliable uniform wetting of the uniform wetting layer 2 and good heating of the heating layer 3, while also reducing the overall thickness of the bionic skin, which helps to improve the response speed of the functional layers.

[0104] Optionally, the heat-emitting layer 3 comprises a fifth substrate, and the fifth substrate is a deformable heat-emitting substrate.

[0105] In an embodiment, the fifth substrate can be made of elastic metal such as copper-nickel-tin alloy, silver-based elastic electrical contact material, etc. so as to realize the heat-emitting effect of the heat-emitting layer 3 by Joule heat effect, and the elastic metal also has good elastic deformation capability, which helps the bionic skin to better adhere to the biological model and simulate the heat-emitting condition in the human motion state or wearing state.

[0106] In an embodiment, the fifth substrate can also be made of graphene material so as to realize the heat-emitting effect of the heat-emitting layer 3 by the characteristic of electric heating, and the graphene material also has good elastic deformation capability, which helps the bionic skin to better adhere to the biological model and simulate the heat-emitting condition in the human motion state or wearing state.

[0107] In an embodiment, the fifth substrate can also be made of graphene material by compounding with aluminum alloy, polyimide, etc. so as to realize the heat-emitting effect of the heat-emitting layer 3 by the characteristic of electric heating, and these materials all have good elastic deformation capability, which helps the bionic skin to better adhere to the biological model and simulate the heat-emitting condition in the human motion state or wearing state. Moreover, the fifth substrate formed by compounding can also improve its thermal conductivity and mechanical strength, which helps to ensure the stable heat-emitting of the heat-emitting layer 3.

[0108] Optionally, the heat-emitting layer 3 comprises a sixth substrate 31 and a heat-emitting circuit 32 arranged on the sixth substrate 31, and the sixth substrate 31 is deformable.

[0109] In an embodiment, the sixth substrate 31 can be made of flexible material so as to make the bionic skin with the heat-emitting layer 3 better adhere to the biological model. The heat-emitting circuit 32 is formed by printing conductive silver paste on the surface of the sixth substrate 31, and the heat-emitting circuit 32 can heat and realize the heat-emitting effect of the heat-emitting layer 3 under the condition of power supply.

[0110] In an embodiment, the sixth substrate 31 can be made of graphene material. The graphene material can heat under the condition of power supply, and the heat-emitting circuit 32 arranged thereon can enhance the heat-emitting effect of the heat-emitting layer 3, thereby realizing the efficient heat-emitting of the heat-emitting layer 3.

[0111] The heat-emitting circuit 32 on the surface of the sixth substrate 31 can transmit the heat generated thereby to different areas of the bionic skin by designing the structure or length of the heat-emitting circuit 32, which helps the bionic skin to better simulate the complex heat-emitting condition in the human motion state or wearing state.

[0112] The energization condition can be controlled by adjusting the size of the current to achieve precise temperature control of the heating layer 3, thereby adapting to different heating requirements.

[0113] Optionally, the surface of the sixth substrate 31 has a wrinkle region, and the heating circuit 32 is located in the wrinkle region.

[0114] In an embodiment, a wave-shaped wrinkle structure, i.e., a wrinkle region, can be prepared on the surface of the sixth substrate 31 by micro-nano processing technology, so that it can release stress by wrinkle unfolding during deformation, avoiding the fracture of the heating circuit 32 arranged thereon, and helping to ensure the reliable heating of the heating layer 3.

[0115] Optionally, the heating layer 3 further comprises an insulating layer 33, a heat-conducting layer 34, and a buffer layer 35, the buffer layer 35 is arranged between the heating circuit 32 and the sixth substrate 31, the insulating layer 33 is arranged on the side of the heating circuit 32 away from the buffer layer 35, and the heat-conducting layer 34 is arranged between the insulating layer 33 and the heating circuit 32.

[0116] As shown in Figure 7 , the buffer layer 35 can be selected from silica gel foam and the like, and the surface thereof can be coated with pressure-sensitive adhesive to enable close adhesion to the sixth substrate 31 and the heating circuit 32. The porous structure of the buffer layer 35 can absorb stress when the sixth substrate 31 is stretched or vibrated, avoiding the fracture of the heating circuit 32 caused by rigid contact; at the same time, it can fill the tiny defects on the surface of the sixth substrate 31, ensuring uniform stress on the heating circuit 32.

[0117] The heating circuit 32 can be formed on the surface of the buffer layer 35 by screen printing process, and can be selected from carbon nanotube graphene composite conductive paste and the like, and can be designed in a serpentine, runway shape, or the like as needed to meet the corresponding heating requirements.

[0118] The heat-conducting layer 34 can be selected from flexible graphite film and the like, and is arranged between the insulating layer 33 and the heating circuit 32 by hot-pressing adhesion to cover the surface of the heating circuit 32. The heat-conducting layer 34 can quickly and uniformly conduct the local heat of the heating circuit 32 to the surface of the entire heating layer 3.

[0119] The insulating layer 33 is arranged on the outermost side of the heating layer 3, and can be selected from polyimide (PI) film and the like, and is bonded to the heat-conducting layer 34 by high-temperature resistant epoxy resin adhesive. As shown in Figure 4 and Figure 5 , the insulating layer 33 can effectively prevent the heating circuit 32 from contacting the functional layers such as the third detection layer 7 on the outside, preventing the risk of electric leakage, thereby improving the safety of the bionic skin.

[0120] Optionally, the sixth substrate 31 is a deformable heating substrate.

[0121] In an embodiment, the sixth substrate 31 can be made of graphene material to realize the heating effect of the heating layer 3 by utilizing the characteristic of heating when the graphene material is electrified, and the graphene material also has good elastic deformation capacity, which helps the bionic skin to better fit on the biological model. The heating effect of the heating layer 3 can be further enhanced by combining the heating circuit 32 arranged thereon, thereby realizing efficient heating of the heating layer 3.

[0122] In an embodiment, the sixth substrate 31 can also be made by compounding graphene material with aluminum alloy, polyimide and other materials to realize the heating effect of the heating layer 3 by utilizing the characteristic of heating when the graphene material is electrified, and these materials all have good elastic deformation capacity, which helps the bionic skin to better fit on the biological model. The heating effect of the heating layer 3 can be further enhanced by combining the heating circuit 32 arranged thereon, thereby realizing efficient heating of the heating layer 3. Moreover, the sixth substrate 31 formed by compounding can also improve its thermal conductivity and mechanical strength, which helps to ensure the stable heating of the heating layer 3.

[0123] Moreover, the sixth substrate 31 is set as a deformable heating substrate, so that when the bionic skin with the heating layer 3 is fitted on the model, the sixth substrate 31 can realize overall heating to better simulate the heating situation in the human motion state or wearing state.

[0124] Optionally, the heating circuit 32 has a serpentine structure, a racetrack structure, a stepped structure, a corrugated structure or a honeycomb grid structure.

[0125] Specifically, the heating circuit 32 can be arranged in the sixth substrate 31, or the heating circuit 32 can be printed on the surface of the sixth substrate 31, and the line width, spacing and layout thereof are adapted to the requirements of stretchable characteristics and uniform heating.

[0126] Wherein, according to different application requirements, the shape and length of the heating circuit 32 can be specifically designed, including but not limited to serpentine, racetrack, stepped, corrugated and honeycomb grid, which can all increase the total length of the heating circuit 32, thereby enhancing the heating effect of the heating layer 3.

[0127] In addition, by designing the shape of the heating circuit 32, the heating circuit 32 on the sixth substrate 31 can avoid the weak areas of the biological model after the bionic skin is worn on the model, which helps to prolong the service life of the test equipment.

[0128] As shown in Figure 8 When the heating circuit 32 has a serpentine structure, it can be designed to have a continuous "S" shape along the length direction of the sixth substrate 31, and the total length of the circuit can be adapted according to the size of the sixth substrate 31. Wherein, the bending radius of the serpentine structure can be designed to be ≥1mm to avoid stress concentration when stretched.

[0129] In this way, the total length of the heating circuit 32 can be increased on the sixth substrate 31 of a certain area by using the continuous "S" shape bending structure, so that the heating effect of the heating layer 3 can be enhanced. In addition, the continuous "S" shape arrangement can also be used to avoid functional areas or weak areas such as sweat holes after being worn on a biological model, so that the performance of the bionic skin can be ensured.

[0130] In addition, the continuous "S" shape bending structure can buffer the tensile stress by itself, which is convenient for adapting to the curved surface model.

[0131] When the heating circuit 32 is in a runway shape, it can be designed to consist of two parallel straight lines and two semicircular arc lines to form a closed loop. Among them, the two semicircular arc line segments can disperse the tensile stress, and the parallel straight line segments can ensure uniform heating.

[0132] As shown in Figure 9 When the heating circuit 32 is in a ladder shape, it can be designed to be arranged in a "ladder" shape along the length direction of the sixth substrate 31, and each straight line segment forms a certain angle with the edge of the sixth substrate 31. Among them, the endpoints of the adjacent two straight line segments can be connected by a circular arc.

[0133] In this way, the total length of the heating circuit 32 can be increased on the sixth substrate 31 of a certain area by using the ladder shape structure, so that the heating effect of the heating layer 3 can be enhanced. In addition, the ladder shape structure can also be used to avoid functional areas or weak areas such as sweat holes after being worn on a biological model, so that the performance of the bionic skin can be ensured.

[0134] In addition, by designing the ladder angle, the sixth substrate 31 can be stretched in multiple directions, and the heating area can be ensured to have no dead angle, which is convenient for adapting to the curved surface biological model.

[0135] When the heating circuit 32 is in a corrugated shape, it can be designed to be arranged in a sinusoidal corrugated shape along the length direction of the sixth substrate 31, and the circuit is continuous without breakpoints, so as to be able to cover the effective area of the sixth substrate 31 as a whole. The elastic deformation allowance of the sinusoidal corrugated structure is sufficient, so that the circuit 32 can still maintain continuous conduction when the sixth substrate 31 is stretched, which is convenient for adapting to the curved surface biological model.

[0136] When the heating circuit 32 is in a honeycomb grid shape, the heating circuit 32 can be designed to be in a regular polygon honeycomb grid layout, adjacent grids are connected by shared edges to form a continuous conductive network, and the whole covers the effective heating area of the sixth substrate 31, which is convenient for realizing uniform heating.

[0137] Optionally, the bionic skin further comprises a first detection layer 1, the first detection layer 1 is located on the outside of the bionic skin, and the first detection layer 1 is used for detecting at least one of air temperature data and air humidity data in the sampling area.

[0138] Specifically, the first detection layer 1 can include a first substrate and a plurality of first sensors arranged on the first substrate. The plurality of first sensors can be evenly distributed on the surface of the first substrate or in a specific sampling area, so as to comprehensively cover and accurately reflect the air condition of the sampling area, thereby simulating the actual feeling after the human skin wears the wearable product.

[0139] The first substrate can be a flexible printed circuit board (FPC) or a printed circuit board (PCB), so that a detection network can be formed between the plurality of first sensors, which helps to enhance the detection capability of the first detection layer 1. The first sensor can be at least one of a humidity sensor, a temperature sensor, and a temperature and humidity sensor.

[0140] Optionally, the first sensor is a humidity sensor, and the plurality of humidity sensors are arranged in an array.

[0141] In this way, the plurality of humidity sensors can simultaneously or independently detect the air humidity data in the sampling area of the bionic skin, accurately measure the humidity parameters of each detection point on the surface of the bionic skin in the sampling area covered after wearing the wearable product, and help to simulate the humidity change felt after the human skin wears the wearable product. Collecting these air humidity data can also generate humidity distribution information, which can be a mapping table or a humidity distribution graph.

[0142] Optionally, the first sensor is a temperature sensor, and the plurality of temperature sensors are arranged in an array.

[0143] In this way, the plurality of temperature sensors can simultaneously or independently detect the air temperature data in the sampling area of the bionic skin, accurately measure the temperature parameters of each detection point on the surface of the bionic skin in the sampling area covered after wearing the wearable product, and help to simulate the temperature change felt after the human skin wears the wearable product.

[0144] Optionally, the first sensor is a humidity sensor and a temperature sensor, and the plurality of humidity sensors and the plurality of temperature sensors are respectively arranged in an array in the sampling area, and the humidity sensors and the temperature sensors are arranged alternately.

[0145] In an embodiment, the plurality of humidity sensors can be arranged in an array, the plurality of temperature sensors can be arranged in an array, and the two can be arranged alternately, for example, any one humidity sensor is surrounded by temperature sensors, and vice versa, so as to ensure that each monitoring point can synchronously acquire the air temperature and humidity data of the sampling area, without monitoring blind area, thereby enhancing the detection range and detection capability of the first detection layer 1, which is conducive to improving the arrangement density of the first sensor and the detection accuracy of the first detection layer 1.

[0146] In addition, the plurality of first sensors arranged in a multi-point array can also adapt to the deformable design of the uniform wetting layer 2 on the inner side, which helps to improve the sensing accuracy, response speed and compatibility of the bionic skin, and also facilitates the simulation of the real feeling of human skin.

[0147] Optionally, the first sensor is a temperature and humidity sensor, and the plurality of temperature and humidity sensors are arranged in an array in the sampling area.

[0148] Specifically, a capacitive integrated sensor, a resistive integrated sensor or other integrated temperature and humidity sensor can be used. The single temperature and humidity sensor can integrate the temperature measurement function and the humidity measurement function, so that the single temperature and humidity sensor can have both the temperature measurement function of the temperature sensor and the humidity measurement function of the humidity sensor. The plurality of temperature and humidity sensors can simultaneously or independently detect the air temperature data and the air humidity data in the sampling area and provide comprehensive environmental information, so that the bionic skin can more accurately simulate the actual feeling of human skin after wearing a wearable product.

[0149] Optionally, each first sensor has a detection section and a connection section, the connection section is electrically connected with the first substrate, and the detection section can extend towards the sampling area, which helps the detection section to conveniently and reliably monitor the air data of the sampling area after wearing the wearable product. The connection section is electrically connected with the first substrate layer, so as to transmit the signal detected by the detection section of the first sensor to the first substrate.

[0150] After the corresponding first sensor and the first substrate are welded, a layer of waterproof nano coating can be applied on the surface of the first sensor as a whole, which can prevent the water vapor of the uniform wetting layer 2 on the inner side from invading and causing short circuit of the first sensor. After the coating is cured, a layer of ultra-thin light-transmitting silicone film can be further covered, which not only ensures the sensing sensitivity of the first sensor, but also buffers external stress to avoid damage to the first sensor due to impact.

[0151] The above embodiments mainly describe the differences between the embodiments. The different optimization features of the embodiments can be combined to form a better embodiment as long as they are not contradictory. Considering the brevity of the text, the details are not repeated here.

[0152] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A biomimetic skin, characterized in that, The application relates to a bionic skin, which comprises: a uniform wetting layer (2), a third detection layer (7) and a heating layer (3) arranged in layers, the third detection layer (7) is arranged between the uniform wetting layer (2) and the heating layer (3) and is used for detecting the surface pressure of the bionic skin, the uniform wetting layer (2) is used for uniformly wetting the surface of the bionic skin, the heating layer (3) is used for adjusting the actual temperature value of the surface of the bionic skin, and the heating layer (3) can be deformed. The bionic skin further comprises a first uniform temperature layer (4) arranged on the side of the heating layer (3) close to the uniform wetting layer (2).

2. The biomimetic skin according to claim 1, characterized in that, The bionic skin further comprises a second uniform temperature layer (5) arranged on the side of the heating layer (3) away from the first uniform temperature layer (4).

3. The biomimetic skin according to claim 2, characterized in that, The bionic skin further comprises a second detection layer (6) arranged on the side of the heating layer (3) close to the third detection layer (7), the second detection layer (6) is used for detecting the actual temperature value, and the second detection layer (6) is in communication connection with the heating layer (3), so that the heating layer (3) can adjust its heating state based on the deviation between the actual temperature value detected by the second detection layer (6) and a second preset temperature value.

4. The biomimetic skin of claim 1, wherein, The bionic skin further comprises a waterproof layer arranged between the third detection layer (7) and the uniform wetting layer (2).

5. The biomimetic skin of claim 1, wherein, The uniform wetting layer (2) comprises a fourth substrate arranged close to the third detection layer (7) and a first material arranged on the fourth substrate and forming a hydrophobic structure, and the hydrophobic structure has uniform hydrophobic channels.

6. The biomimetic skin of claim 1, wherein, The fourth substrate is a mesh substrate, the first material is a hydrophobic filling material, the hydrophobic filling material is arranged in mesh holes of the mesh substrate, and a plurality of the mesh holes form the hydrophobic channels.

7. The biomimetic skin according to claim 6, characterized in that, Alternatively, the fourth substrate is a rough substrate, and a plurality of rough parts on the surface of the rough substrate form the hydrophobic channels. The heating layer (3) comprises a fifth substrate, and the fifth substrate is a deformable heating substrate.

8. The biomimetic skin of claim 1, wherein, The heating layer (3) comprises a sixth substrate (31) and a heating circuit (32) arranged on the sixth substrate (31), and the sixth substrate (31) can be deformed.

9. The biomimetic skin of claim 1, wherein, The sixth substrate (31) is a deformable heating substrate.

10. The biomimetic skin according to claim 9, characterized in that, The heating circuit (32) has a serpentine structure, a runway structure, a stepped structure, a corrugated structure or a honeycomb grid structure. ​

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