Testing device for wearable product
By using a layered detection layer of biomimetic skin in a wearable product testing device to simulate the user's experience after wearing it, the problem of not being able to predict wearing comfort in existing technologies is solved, enabling accurate comfort assessment and product optimization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GOERTEK INC
- Filing Date
- 2025-12-31
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, it is impossible to effectively simulate and measure the user's comfort when wearing wearable products in advance, which makes product improvement difficult.
A testing device for wearable products was designed, including a biological model and bionic skin. The bionic skin consists of a first detection layer and a third detection layer stacked together. The first detection layer is used to detect air temperature and humidity, and the third detection layer is used to detect pressure or temperature. The device simulates the sensations of human skin through precise fit.
It can accurately simulate the actual feeling of users wearing wearable products, provide quantitative data, and help improve product design to enhance wearing comfort.
Smart Images
Figure CN121877429A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wearable product technology, and more specifically, to a testing device for wearable products. Background Technology
[0002] With the development of technology, wearable products such as virtual reality devices, augmented reality devices, mixed reality devices, smart helmets, headphones, smart glasses, and smart straps are becoming increasingly popular. To improve user comfort, it is necessary to test the comfort level while wearing them.
[0003] In existing technologies, the assessment of the wearing comfort of wearable products largely relies on the subjective feelings of users after actually wearing them, making it impossible to simulate and measure the user's wearing experience in advance, which makes it quite difficult to improve wearable products. Summary of the Invention
[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a novel testing device for wearable products.
[0005] According to one aspect of the present invention, a testing apparatus for wearable products is provided, comprising: A biological model having a first region and a second region; A bionic skin, disposed on the biological model, comprises a first detection layer and a third detection layer stacked together. The first detection layer is at least in contact with a second region and is used to detect at least one of air temperature data and air humidity data in the second region. The third detection layer is at least in contact with the first region and is used to detect the actual pressure value or actual temperature value on the surface of the bionic skin in contact with the first region.
[0006] Optionally, the first detection layer is located on the outer side of the bionic skin.
[0007] Optionally, the first detection layer includes a first substrate and a plurality of first sensors disposed on the first substrate. The first sensors have a detection segment and a connection segment. The connection segment is electrically connected to the first substrate, and the detection segment can extend toward the sampling area corresponding to the second region.
[0008] Optionally, the first sensor is a humidity sensor, and a plurality of the humidity sensors are arranged in an array; Alternatively, the first sensor may be a temperature sensor, and multiple temperature sensors may be arranged in an array. Alternatively, the first sensor may be a humidity sensor and a temperature sensor, with multiple humidity sensors and multiple temperature sensors arranged in an array, and the humidity sensors and temperature sensors arranged alternately.
[0009] Optionally, the first sensor is a temperature and humidity sensor, and multiple temperature and humidity sensors are arranged in an array.
[0010] Optionally, the bionic skin further includes a moisture equalization layer, which is disposed on the side of the first detection layer near the third detection layer, and the moisture equalization layer is used to even out the surface humidity of the bionic skin.
[0011] Optionally, the bionic skin further includes a second detection layer, which is disposed on the side of the third detection layer away from the moisture equalization layer. The second detection layer is used to detect the actual temperature value of the bionic skin surface that is in contact with the first region, and the third detection layer is used to detect the actual pressure value of the bionic skin surface that is in contact with the first region.
[0012] Optionally, it also includes a water tank module, wherein the biological model has multiple perspiration holes, the first side of each perspiration hole is connected to the moisture equalization layer, the second side of each perspiration hole is connected to the water tank module, and the second detection layer is communicatively connected to the water tank module, so that the water tank module can adjust its water output state based on the deviation between the actual temperature value detected by the second detection layer and the first preset temperature value.
[0013] Optionally, the bionic skin further includes a heating layer, which is located on the side of the second detection layer away from the third detection layer. The heating layer is communicatively connected to the second detection layer, enabling the heating layer to 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.
[0014] Optionally, the biological model is a human head model, wherein the first region includes at least one of the forehead region, cheek region, and jaw region, and the second region includes the eye region.
[0015] One technical advantage of the embodiments disclosed herein is that: This invention, by attaching a first detection layer to a second region, enables the first detection layer to reflect the air conditions of the sampling area corresponding to the second region. By attaching a third detection layer to the first region, the third detection layer can detect the actual pressure or temperature values on the bionic skin surface attached to the first region. This simulates the actual feeling of wearing a wearable product on human skin, contributing to the improvement of wearable products.
[0016] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description
[0017] The accompanying drawings, which form part of this specification, illustrate embodiments of the invention and, together with the specification, serve to explain the principles of the invention.
[0018] Figure 1 This is a schematic diagram of the first type of bionic skin according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of a second type of bionic skin according to an embodiment of the present disclosure; Figure 3 This is a schematic diagram of a third type of bionic skin according to an embodiment of this disclosure; Figure 4 This is a schematic diagram of the fourth type of bionic skin according to an embodiment of the present disclosure; Figure 5 This is a schematic diagram of the fifth type of bionic skin according to an embodiment of the present disclosure; Figure 6 This is a schematic diagram of a heating layer according to an embodiment of the present disclosure; Figure 7 This is a schematic diagram of a first type of heating circuit according to an embodiment of this disclosure; Figure 8 This is a schematic diagram of a second type of heating circuit according to an embodiment of this disclosure.
[0019] Explanation of reference numerals in the attached figures: 1. First detection layer; 2. Humidity equalization layer; 3. Heating layer; 31. Sixth substrate; 32. Heating circuit; 33. Insulation layer; 34. Thermally conductive layer; 35. Buffer layer; 4. First temperature equalization layer; 5. Second temperature equalization layer; 6. Second detection layer; 7. Third detection layer. Detailed Implementation
[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the invention.
[0021] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.
[0022] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.
[0023] In all the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
[0025] This invention provides a testing device for wearable products, which can be applied to the wearing comfort testing of various wearable products, so as to optimize wearable products and improve user wearing comfort.
[0026] Specifically, the testing device for wearable products provided in this embodiment of the invention includes: A biological model, which has a first region and a second region; The bionic skin is placed on a biological model. The bionic skin includes a first detection layer 1 and a third detection layer 7 stacked together. The first detection layer 1 is at least in contact with a second region and is used to detect at least one of the air temperature data and air humidity data of the second region. The third detection layer 7 is at least in contact with the first region and is used to detect the actual pressure value or actual temperature value of the surface of the bionic skin in contact with the first region.
[0027] Specifically, biological models can be designed based on the actual shape and size of the human body. High-precision 3D modeling technology is used to construct the outline of the model, ensuring that it closely matches the shape and proportions of various parts of the human body. Examples include head models and hand models.
[0028] The biological model has a first region and a second region. The first region corresponds to the contact area after wearing the wearable product, and the second region corresponds to the non-contact area after wearing the wearable product.
[0029] like Figures 1 to 5 As shown, the bionic skin can be configured with a layered structure, mainly including a first detection layer 1 and a third detection layer 7. These two detection layers can be tightly bonded together using processes such as adhesive bonding and hot pressing to form an integral bionic skin structure, which can then be attached or worn on the surface of a biological model to facilitate testing of wearable products.
[0030] When wearing this bionic skin, the first detection layer 1 is positioned to adhere to at least the second region, i.e., the non-contact region, of the biological model. During the application process, precise positioning technology can be used to ensure that the first detection layer 1 is in complete contact with the second region, avoiding gaps or misalignment, thereby ensuring the accuracy of the detection data.
[0031] The first detection layer 1 is used to detect at least one of air temperature data and air humidity data in the second region. Specifically, the first detection layer 1 may include a first substrate and a plurality of first sensors disposed on the first substrate. The plurality of first sensors can be evenly distributed on the surface of the first substrate to fully cover and accurately reflect the air conditions of the sampling area corresponding to the second region, thereby simulating the actual feeling of wearing a wearable product on human skin.
[0032] The first substrate can be a flexible printed circuit board (FPC) or a printed circuit board (PCB), enabling a detection network to be formed among multiple 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.
[0033] When wearing this bionic skin, the third detection layer 7 is positioned to be in close contact with at least the first area of the biological model, i.e., the contact area. Similarly, through precise positioning and bonding processes, it can be ensured that the third detection layer 7 is tightly bonded to the first area, accurately detecting the actual pressure or temperature value on the surface of the bionic skin in contact with the first area.
[0034] The third detection layer 7 is used to detect the actual pressure or temperature value of the bionic skin surface that is in contact with the first area. When it is necessary to detect the actual pressure value, a piezoresistive pressure sensor can be integrated inside the third detection layer 7. This sensor can convert the surface pressure signal into an electrical signal for detection by utilizing the piezoresistive effect, that is, the principle that the resistance of a material changes when it is subjected to pressure. When it is necessary to detect the actual temperature value, a temperature sensor such as a thermistor can be used.
[0035] In this way, the first detection layer 1 is set to fit into the second area, so that the first detection layer 1 can detect the air conditions in the sampling area corresponding to the second area, thereby simulating the actual feeling of wearing wearable products on human skin.
[0036] The third detection layer 7 is attached to the first area, enabling it to detect the actual pressure or temperature values on the surface of the bionic skin that is attached to the first area. This allows it to simulate the pressure and temperature sensations felt by human skin. For example, when a wearable product, such as a smartwatch, is worn on the wrist (the first area), the third detection layer 7 can measure the pressure exerted on the skin or the temperature of the skin surface. This allows the bionic skin to better simulate the real state of human skin, contributing to the improvement of wearable products.
[0037] Optionally, the first detection layer 1 is located on the outside of the bionic skin so that the first detection layer 1 can conveniently and reliably monitor the air data of the sampling area corresponding to the second area, thereby simulating the actual feeling of wearing wearable products on human skin.
[0038] Optionally, the first detection layer 1 includes a first substrate and a plurality of first sensors disposed on the first substrate. Each first sensor has a detection segment and a connection segment. The connection segment is electrically connected to the first substrate, and the detection segment can extend towards the sampling area corresponding to the second region. This facilitates convenient and reliable monitoring of air data in the sampling area corresponding to the second region after the wearable product is worn. The connection segment is electrically connected to the first substrate layer to transmit the signal detected by the detection segment of the first sensor to the first substrate.
[0039] Optionally, the first sensor is a humidity sensor, and multiple humidity sensors are arranged in an array.
[0040] In this way, multiple humidity sensors can simultaneously or independently detect the air humidity data of the sampling area corresponding to the second region of the bionic skin. This allows for accurate measurement of the humidity parameters at various detection points on the surface of the bionic skin within the sampling area covered by the wearable product, helping to simulate the humidity changes felt by human skin after wearing the wearable product. Collecting this air humidity data can also generate information reflecting the humidity distribution, which can be a mapping table or a humidity distribution map.
[0041] Optionally, the first sensor is a temperature sensor, and multiple temperature sensors are arranged in an array.
[0042] In this way, multiple temperature sensors can simultaneously or independently detect the air temperature data in the sampling area corresponding to the second region of the bionic skin. This allows for accurate measurement of the temperature parameters of each detection point on the surface of the bionic skin in the sampling area corresponding to the second region covered by the wearable product. This helps to simulate the temperature changes felt by human skin after wearing the wearable product.
[0043] Optionally, the first sensor is a humidity sensor and a temperature sensor, with multiple humidity sensors and multiple temperature sensors arranged in an array, and the humidity sensors and temperature sensors are arranged alternately.
[0044] In one embodiment, multiple humidity sensors and multiple temperature sensors can be arranged in an array, and the two can be arranged alternately. For example, temperature sensors are arranged around any humidity sensor, and vice versa. This ensures that each monitoring point can synchronously acquire the air temperature and humidity data of the sampling area corresponding to the second region, without any monitoring blind spots. This enhances the detection range and detection capability of the first detection layer 1, which is beneficial to improving the density of the first sensor arrangement and also helps to improve the detection accuracy of the first detection layer 1.
[0045] In addition, the multiple first sensors arranged in a multi-point array can adapt to complex biological models and are also conducive to simulating the real sensations of human skin.
[0046] Optionally, the first sensor is a temperature and humidity sensor, and multiple temperature and humidity sensors are arranged in an array.
[0047] Specifically, integrated temperature and humidity sensors, such as capacitive integrated sensors and resistive integrated sensors, can be used. A single temperature and humidity sensor can integrate temperature measurement and humidity measurement functions into one unit, enabling it to perform both temperature measurement and humidity measurement functions. Multiple temperature and humidity sensors can simultaneously or independently detect air temperature and humidity data within the sampling area corresponding to the second region, providing comprehensive environmental information. This allows the bionic skin to more accurately simulate the actual feeling of wearing wearable products on human skin.
[0048] Optionally, the bionic skin also includes a moisture equalization layer 2, which is disposed on the side of the first detection layer 1 near the third detection layer 7, and the moisture equalization layer 2 is used to even out the surface humidity of the bionic skin.
[0049] like Figures 2 to 5 As shown, the moisture equalization layer 2 can be made of porous materials such as foam metal or fiber fabric, giving it good air permeability and moisture absorption. Its interior can also be designed with microchannels or pore structures to facilitate air circulation and uniform moisture distribution.
[0050] In one embodiment, the moisture equalization layer 2 may be configured from top to bottom or from outside to inside, comprising a hydrophobic film, a superabsorbent fiber felt, and a moisture-wicking fabric. This allows the three components to work together to achieve both moisture absorption and moisture equalization while preventing liquid penetration that could cause abnormalities in the third detection layer 7. The hydrophobic film may be a polytetrafluoroethylene (PTFE) film.
[0051] When liquid from the water tank module connected to the moisture equalization layer 2 enters the moisture equalization layer 2 through the sweat vents on the biomimetic model, the moisture equalization layer 2 can use its own structure to evenly distribute the liquid on the surface of the biomimetic skin, thereby achieving a uniform moisture effect on the biomimetic skin surface and simulating the uniform diffusion process of sweat on the skin surface after human sweating. The liquid in question is a simulated sweat liquid.
[0052] Optionally, the uniformly moistened layer 2 can be deformed.
[0053] The uniform moisture layer 2 can be made of elastic or stretchable materials, so that the uniform moisture layer 2 can deform accordingly, so that the bionic skin with the uniform moisture layer 2 can better fit onto the biological model, which helps the bionic skin to better simulate the real feeling of human skin.
[0054] For example, when used to test VR glasses, the bionic skin with the uniform moisture layer 2 can better fit the eye area of the head model, which helps to simulate the real feeling of wearing VR glasses. This makes the wearing comfort test results of VR glasses using this testing device closer to the real feeling of actually wearing them, thus helping to improve the design of VR glasses.
[0055] When used for testing smartwatches, the bionic skin with the uniform moisture layer 2 can better fit the wrist area of the hand model, which helps to simulate the real feeling of wearing a smartwatch. This makes the wearing comfort test results of the smartwatch using this testing device closer to the real feeling of actually wearing it, thus helping to improve the design of the smartwatch.
[0056] Optionally, the bionic skin also includes a second detection layer 6, which is located on the side of the third detection layer 7 away from the uniform moisture layer 2. The second detection layer 6 is used to detect the actual temperature value of the bionic skin surface that is in contact with the first region, and the third detection layer 7 is used to detect the actual pressure value of the bionic skin surface that is in contact with the first region.
[0057] Specifically, the second detection layer 6 may include a second substrate and a plurality of temperature sensors disposed on the second substrate. The second substrate may be attached to the third detection layer 7, and the sensing ends of the plurality of temperature sensors may be positioned away from the third detection layer 7, which helps to detect in real time the actual temperature value of the bionic skin surface that is in contact with the first region.
[0058] The third detection layer 7 is used to measure the actual pressure value of the biomimetic skin surface that adheres to the first region, so as to simulate the actual pressure conditions of human skin. The third detection layer 7 can be made of piezoresistive materials or piezoelectric composite materials, such as PDMS doped with nanoparticles or conductive fiber fabrics, so that its resistance or voltage change is only related to the surface pressure.
[0059] Optionally, it also includes a water tank module. The biological model has multiple sweat vents. The first side of each sweat vent is connected to the moisture equalization layer 2, and the second side of each sweat vent is connected to the water tank module. The second detection layer 6 is communicatively connected to the water tank module, so that the water tank module can adjust its water output state based on the deviation between the actual temperature value detected by the second detection layer 6 and the first preset temperature value.
[0060] Specifically, multiple sweat pores can be evenly distributed on the biological model 20. These sweat pores are used to simulate the distribution of sweat glands on the human head. The diameter of the sweat pores is set according to the opening size of actual human sweat glands, and can be between 0.1 and 0.5 mm. The distribution density of sweat pores can also refer to the sweat gland density in different areas of the human head. For example, sweat pores are relatively densely distributed in areas prone to sweating, such as the forehead and top of the head, while sweat pores are sparsely distributed in areas relatively less prone to sweating, such as the ears.
[0061] Each sweat vent has a first side and a second side, the first side being connected to the moisture equalization layer 2 of the bionic skin 10, and the second side being connected to the water tank module 30.
[0062] The second detection layer 6 is connected to the water tank module via wired or wireless means, enabling the water tank module to adjust its water output status in a timely manner 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. This adjustment can include starting water output, stopping water output, adjusting the water output volume, and adjusting the water output rate. This simulates the sweating process of human skin and provides a realistic and accurate simulation of wearing wearable products, offering quantitative data for the design improvement of wearable products.
[0063] The first preset temperature value is the skin temperature at which the human skin is in thermal equilibrium between heat generation and heat dissipation. When the human skin temperature is at the first preset temperature value, the human skin is in a static and comfortable state and will not sweat.
[0064] When the actual temperature value of the bionic skin surface in contact with the first region, detected by the second detection layer 6, deviates positively from the first preset temperature value, and this deviation exceeds the error range (i.e., the actual temperature value of the bionic skin is greater than the first preset temperature value), the thermal balance of human skin is disrupted, requiring adjustment through sweating. At this point, the water tank module can be activated to dispense water to simulate the sweating process of human skin. Specifically, when the positive deviation is large, meaning the actual temperature value of the bionic skin is extremely high, the water output or dispensing rate of the water tank module can be increased to simulate sweating at extremely high human skin temperatures. Conversely, when the positive deviation is small, meaning the actual temperature value of the bionic skin is relatively high, the water output or dispensing rate of the water tank module can be decreased to simulate sweating at relatively high human skin temperatures.
[0065] When there is no positive deviation between the actual temperature value of the bionic skin surface that is in contact with the first area detected by the second detection layer 6 and the first preset temperature value, or when there is a positive deviation but the positive deviation is within the error range, that is, when 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. The bionic skin does not need to simulate human sweating. At this time, the water tank module can be turned off to stop water output.
[0066] For example, when the ambient temperature of the bionic skin is high, the bionic skin simulates the human skin temperature at that temperature. In this case, the actual temperature of the bionic skin is higher than a preset temperature value, therefore the bionic skin needs to simulate human sweating. As another example, when a person is exercising, their skin temperature rises. The bionic skin simulates the human skin temperature during this exercise state, and again, the actual temperature of the bionic skin is higher than a preset temperature value, therefore the bionic skin needs to simulate human sweating.
[0067] In one embodiment, multiple temperature sensors may be arranged in an array.
[0068] Specifically, arranging multiple temperature sensors in an array enhances the temperature detection range of the second detection layer 6, increases the density of the temperature sensor arrangement, and improves the detection capability and accuracy of the second detection layer 6. Furthermore, the multi-point array arrangement of multiple temperature sensors can adapt to the deformable design of the second substrate, helping to improve the sensing accuracy of the bionic skin and facilitating the simulation of the realistic sensations of human skin.
[0069] Optionally, the uniform moisture layer 2 includes a fourth substrate and a first material, wherein the first material is disposed on the fourth substrate and forms a hydrophobic structure, and the hydrophobic structure has uniform hydrophobic channels.
[0070] Among them, silicone rubber materials, such as polydimethylsiloxane (PDMS) or thermoplastic polyurethane elastomer (TPU), can be selected to make the fourth substrate, and the thickness of the fourth substrate can be controlled so that the elastic deformation characteristics of silicone rubber materials can be utilized to make the fourth substrate both deformable and structurally stable.
[0071] In this process, pretreatment methods such as plasma treatment or ultraviolet ozone cleaning can be used to introduce hydrophilic groups such as hydroxyl or carboxyl groups onto the surface of the fourth substrate, thereby enhancing the adhesion of the first material.
[0072] The first material can be a fluorinated polymer, such as polytetrafluoroethylene (PTFE), or a silane-based hydrophobic agent, such as octadecyltrichlorosilane (OTS), which are low surface energy materials. Alternatively, the first material can be a porous hydrophobic material, all of which possess a large contact angle. When this first material is bonded to the fourth substrate, an air layer can be formed on its surface, causing water droplets to form spherical shapes. This allows the uniform moisture layer 2 to have a large contact angle, thereby exhibiting excellent hydrophobic properties.
[0073] In one embodiment, a hydrophobic structure can be formed on the surface of the fourth substrate by a spraying method.
[0074] In one embodiment, a hydrophobic structure can be formed on the surface of a fourth substrate using a chemical vapor deposition method.
[0075] Subsequently, the prepared uniform moisture layer 2 can be bonded to the surface of the second detection layer 6 using hot-press bonding or optically transparent adhesive. The hydrophobic channels should face outwards, i.e., away from the second detection layer 6, to prevent liquid from the uniform moisture layer 2 from seeping into the second detection layer 6 and affecting its detection accuracy and reliability. Furthermore, a waterproofing treatment can be applied to the bonding surface of the second detection layer 6 beforehand to further improve its detection accuracy and reliability.
[0076] In one embodiment, a fourth substrate can be prepared by blending TPU with PDMS using a certain elongation at break, and then a fourth substrate of a certain thickness can be prepared by solution casting. Subsequently, a low-modulus fluorinated acrylate copolymer can be used as the first material, and an elastic hydrophobic layer of a predetermined thickness can be formed by spin coating.
[0077] The above methods can form a hydrophobic structure, resulting in a large surface contact angle of the uniform moisture layer 2, which can achieve excellent hydrophobic effect. This allows the uniform moisture layer 2 to simulate human sweating while simultaneously guiding the liquid to diffuse outward, i.e., away from the second detection layer 6, through its hydrophobic channels. This prevents the liquid from penetrating into the second detection layer 6, avoiding signal drift or circuit short circuits caused by humidity, and thus improving the long-term stability and reliability of the bionic skin in humid environments.
[0078] In addition, the uniform hydrophobic channels within the hydrophobic structure can guide the liquid to spread quickly and evenly along a preset path, avoiding localized humidity accumulation and helping to more realistically simulate the human body's perspiration process.
[0079] Optionally, the fourth substrate can deform, 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 that the elastic deformation of the elastic material can be used to adapt to the application of different biological models; alternatively, the fourth substrate can be made of a stretchable material such as a flexible material so that the plastic deformation of the stretchable material can be used to adapt to the application of different biological models. This allows the bionic skin with the uniform moisture layer 2 to better adhere to the biological model and form a tight fit with the surface of the biological model, helping the bionic skin to better simulate the real feeling of human skin.
[0080] Optionally, the fourth substrate is a mesh substrate, the first material is a hydrophobic filling material, the hydrophobic filling material is disposed in the mesh of the mesh substrate, and multiple meshes form hydrophobic channels.
[0081] Specifically, a polymer fiber woven mesh substrate can be selected, and the mesh openings can be regular polygons such as squares, pentagons, and hexagons to improve the hydrophobic uniformity and consistency of the formed hydrophobic structure. The edges of the mesh substrate can be sealed with heat to prevent the fibers from loosening, and the side closest to the third detection layer 7 should be a flat woven surface to ensure a seamless fit between the two layers.
[0082] The first material can be a hydrophobically modified epoxy resin with added polytetrafluoroethylene (PTFE) micropowder to enhance hydrophobicity. The mixed material can be screen-printed into the mesh of a mesh substrate, with the filling thickness matching the substrate thickness to avoid protrusions. After molding and assembly, the material is baked and cured to form a composite structure of a "mesh substrate skeleton + hydrophobic mesh filling".
[0083] Therefore, the hydrophobic channels formed by the three-dimensional interconnected porous structure of the mesh substrate can provide multi-directional flow channels for the liquid. The liquid spreads simultaneously on the surface and within the pores of the mesh substrate, forming a continuous wetting layer and avoiding local accumulation caused by unidirectional flow. Furthermore, the hydrophobic filler material reduces the surface energy of the mesh inner walls, decreasing the adhesion between the liquid and the mesh inner walls, allowing the liquid to roll within multiple mesh pores, facilitating uniform distribution rather than stagnation, thus achieving the uniform wetting effect of the uniform wetting layer 2.
[0084] In one embodiment, a flexible graphite mesh formed by stacking and pressing multiple layers of graphene can also be used as the mesh substrate, and the first material can be a hydrophobic ionic gel. Embedding the hydrophobic ionic gel within the flexible graphite mesh to form a support and thermally conductive network allows the fourth substrate to balance deformability and efficient moisture uniformity, which is beneficial for the application of the biomimetic skin.
[0085] In one embodiment, a thermally and moisture-conducting network constructed from graphene and carbon nanotubes can be used as the mesh substrate, and the first material can be a silicone rubber matrix to form a "three-dimensional dual-network reinforced skeleton + silicone rubber matrix composite" structure.
[0086] Optionally, the fourth substrate is a rough substrate, and multiple rough portions on the surface of the rough substrate form hydrophobic channels.
[0087] Specifically, grooves, pores, and other rough portions can be formed on the surface of elastic or stretchable materials such as silicone through molding or other methods to obtain a rough substrate. By uniformly arranging the rough portions, uniform hydrophobic channels can also be formed on the surface of the rough substrate. The side closer to the second detection layer 6 is a smooth surface to ensure a tight fit between the two; the side away from the second detection layer 6 is a rough surface, which is used to support the hydrophobic material.
[0088] Optionally, the first material is a low surface energy material, which is disposed on the surface of the rough substrate.
[0089] Specifically, fluorine-based or silicon-based low surface energy materials can be selected as the first material and uniformly coated onto the rough surface of the rough substrate by spraying or other methods. Plasma treatment of the rough surface before coating can help improve the adhesion of the low surface energy material and prevent it from peeling off. After molding and assembly, the coating is baked and cured to form a hydrophobic structure of "rough substrate + low surface energy coating," which helps improve the uniformity of the moisture distribution layer 2.
[0090] Optionally, the rough portion includes grooves and / or pores.
[0091] In this way, the capillary force generated by the micro- or nano-scale grooves or pores formed on the surface of a rough substrate can be used to guide the liquid to flow directionally along the uniform hydrophobic channels formed by multiple rough parts. The grooves can be rectangular, circular, or other shapes, and the pores can be rectangular, circular, or other shapes.
[0092] Furthermore, the combination with low surface energy materials can reduce the interfacial tension between the low surface energy materials and the liquid, making the liquid easier to slide rather than adhere, thereby improving the uniformity of the uniformity layer 2.
[0093] Optionally, the fourth substrate is a gradient hydrophobic substrate, with the hydrophobicity gradually decreasing from the edge to the center, and hydrophobic channels forming on the surface of the substrate. This guides the liquid to diffuse from the highly hydrophobic edge to the less hydrophobic center, preventing water vapor accumulation at the edge and helping to improve the moisture uniformity of the moisture uniform layer 2.
[0094] In one embodiment, the fourth substrate can also employ a two-layer composite structure: the lower layer is a highly permeable substrate, positioned close to the second detection layer 6; the upper layer is a gradient hydrophobic substrate, designed to gradually decrease its hydrophobicity from the edge to the center, with low surface energy materials sprayed onto the surface of the upper gradient hydrophobic substrate. In this way, the lower layer can rapidly conduct liquid, while the upper layer can guide the liquid to diffuse from the highly hydrophobic edge to the less hydrophobic center, preventing moisture accumulation at the edges and helping to improve the uniformity of the humidity layer 2.
[0095] Optionally, the bionic skin also includes a waterproof layer, which is disposed between the second detection layer 6 and the moisture equalization layer 2, so as to isolate water stains or water vapor during the moisture equalization process of the moisture equalization layer 2, thereby ensuring the detection reliability and detection accuracy of the second detection layer 6.
[0096] Furthermore, after a period of use, a significant amount of liquid may remain in the moisture equalization layer 2 of the bionic skin, resulting in less than ideal moisture equalization performance. The waterproof layer design facilitates the removal and replacement of the inner moisture equalization layer 2, helping to ensure that the moisture equalization layer 2 of the bionic skin maintains good moisture equalization performance.
[0097] Optionally, the bionic skin also includes a heating layer 3, which is located on the side of the second detection layer 6 away from the third detection layer 7. The heating layer 3 is communicatively connected to the second detection layer 6, 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.
[0098] like Figure 4 and Figure 5 As shown, the heating layer 3 can use flexible electric heating film, carbon fiber heating wire or PTC (positive temperature coefficient) thermistor as heating element. These materials have the advantages of high heating efficiency, fast response speed and good safety, which helps to simulate the heating situation of the human body under different movement states.
[0099] In one embodiment, an overheat protection device can be built into the heating layer 3. When the temperature exceeds a set threshold, the overheat protection device can automatically cut off the power supply or reduce the heat generation to prevent overheating and ensure the safety of using the bionic skin.
[0100] The second detection layer 6 and the heating layer 3 are connected via wired or wireless means so that the heating layer 3 can adjust its heating state in a timely manner based on the deviation between the actual temperature value of the bionic skin surface detected by the second detection layer 6 and the second preset temperature value. This includes functions such as starting heating, stopping heating, and adjusting the heating power. This enables closed-loop control of the heating layer 3, which is convenient for simulating different states of human skin.
[0101] The second preset temperature value can be set according to the comfort testing requirements of wearable products. For example, when testing the comfort of a wearable product at a certain ambient temperature, the bionic skin simulates the human skin temperature at that ambient temperature, so the second preset temperature value is set to the corresponding human skin temperature at that ambient temperature. When testing the comfort of a wearable product during exercise, the bionic skin simulates the human skin temperature during exercise, so the second preset temperature value is set to the corresponding human skin temperature during exercise.
[0102] 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 this negative deviation exceeds the error range (i.e., the actual temperature value of the bionic skin is lower than the second preset temperature value), the heating layer 3 can be activated to raise the surface temperature of the bionic skin until it meets the second preset temperature value. If the negative deviation is large (i.e., the actual temperature value of the bionic skin is extremely low), the heating power of the heating layer 3 can be increased to accelerate heating; if the negative deviation is small (i.e., the actual temperature value of the bionic skin is slightly lower), the heating power of the heating layer 3 can be decreased to slow down heating.
[0103] 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 when there is a negative deviation but the negative deviation is within the error range, that is, when the actual temperature value of the bionic skin is greater than or equal to the second preset temperature value, the heating layer 3 can be stopped from heating.
[0104] While the heating layer 3 adjusts its heating state based on the deviation between the actual temperature value of the bionic skin surface detected by the second detection layer 6 and the second preset temperature value, the water tank module can also adjust its water output state based on the deviation between the actual temperature value and the first preset temperature value, thereby simulating the dual functions of humidity and temperature regulation of human skin. In other words, based on 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, as well as the relationship between the actual temperature value and the first preset temperature value, the bionic skin can simulate the corresponding processes.
[0105] Specifically, when the actual temperature value detected by the second detection layer 6 has a negative deviation from the second preset temperature value and the negative deviation exceeds the error range, and at the same time, the actual temperature value has a positive deviation from the first preset temperature value and the positive deviation exceeds the error range, that is, when the actual temperature value of the bionic skin is between the first preset temperature value and the second preset temperature value, the heating layer 3 can be activated to heat up, and the water tank module can be activated to dispense water. At this time, the sweating process and the heating process are simulated.
[0106] When the actual temperature value detected by the second detection layer 6 has a negative deviation from the second preset temperature value, and this negative deviation exceeds the error range, while the actual temperature value has no positive deviation from the first preset temperature value, or has a positive deviation but it is within the error range (i.e., the actual temperature value of the bionic skin is less than or equal to the first preset temperature value and less than the second preset temperature value), then the heating layer 3 can be activated to heat up, and the water tank module can be shut off to stop water output. At this time, only the heating process is simulated.
[0107] When the actual temperature value detected by the second detection layer 6 has no negative deviation from the second preset temperature value, or has a negative deviation but the deviation is within the error range, and at the same time there is a positive deviation between the actual temperature value and the first preset temperature value that exceeds the error range (i.e., 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), then the heating layer 3 can be stopped from heating, and the water tank module can be activated to dispense water. At this time, only the sweating process is simulated.
[0108] When the actual temperature value detected by the second detection layer 6 has no negative deviation from the second preset temperature value, or has a negative deviation but the negative deviation is within the error range, and at the same time the actual temperature value has no positive deviation from the first preset temperature value, or has a positive deviation but the positive deviation is within the error range, that is, when the actual temperature value of the bionic skin is between the second preset temperature value and the first preset temperature value, the heating layer 3 can be stopped from heating, and the water tank module can be turned off to stop water output.
[0109] Optionally, the heating layer 3 can deform.
[0110] Specifically, the deformation of the heating layer 3 includes, but is not limited to, stretching, compression, and bending. For example, the base of the heating layer 3 can be made of an elastic material so that the elastic deformation of the elastic material can be used to adapt to the application of different biological models; or the base of the heating layer 3 can be made of a stretchable material such as a flexible material so that the plastic deformation of the stretchable material can be used to adapt to the application of different biological models, so that the bionic skin with the heating layer 3 can better fit onto the biological model and form a tight fit with the surface of the biological model, which helps the bionic skin to better simulate the real feeling of human skin.
[0111] For example, when used to test VR glasses, the bionic skin with the heating layer 3 can better fit the eye area of the head model, which helps to simulate the real feeling of wearing VR glasses. This makes the wearing comfort test results of VR glasses using this testing device closer to the real feeling of actually wearing them, thus helping to improve the design of VR glasses.
[0112] When used for testing smartwatches, the bionic skin with the heating layer 3 can better fit the wrist area of the hand model, which helps to simulate the real feeling of wearing a smartwatch. This makes the wearing comfort test results of the smartwatch using this testing device closer to the real feeling of actually wearing it, thus helping to improve the design of the smartwatch.
[0113] Optionally, both the uniform moisture layer 2 and the heating layer 3 can be deformable. That is, the fourth substrate of the uniform moisture layer 2 can also be made of elastic or stretchable materials, so that the bionic skin with the uniform moisture layer 2 and the heating layer 3 can 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.
[0114] In one embodiment, thermally conductive materials such as graphene and copper foil can be embedded in the uniform moisture layer 2 to improve the thermal conductivity of the uniform moisture layer 2, thereby ensuring that the heat generated by the heating layer 3 can be quickly and evenly transferred to the surface of the bionic skin.
[0115] Optionally, the bionic skin also includes a first temperature equalization layer 4, which is disposed on the side of the heating layer 3 near the second detection layer 6.
[0116] like Figure 5 As shown, the first temperature equalization layer 4 can be directly attached to the side of the heating layer 3 near the second detection layer 6 to form a highly efficient heat conduction interface. The first temperature equalization layer 4 can quickly absorb the heat generated by the heating layer 3 through its high thermal conductivity. For example, the first temperature equalization layer 4 can be made of materials such as graphite sheets, metal foils, or phase change materials, and the heat can be diffused bidirectionally along the bionic skin in both the lateral and longitudinal directions through uniformly distributed heat conduction paths within the layer, avoiding local overheating.
[0117] In this way, the heat can be diffused in both directions through the first uniform temperature layer 4, so that the heat can be transferred more smoothly and evenly in the longitudinal direction perpendicular to the heating layer 3, that is, in the thickness direction of the bionic skin. At the same time, the lateral diffusion ability is enhanced, thereby reducing the temperature difference between the heat source area and the non-heat source area and improving the overall temperature uniformity of the bionic skin.
[0118] 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 5 As shown, the first temperature equalization layer 4 is located 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.
[0119] 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.
[0120] like Figure 5As shown, the bionic skin of this embodiment can form a double-layer temperature equalization structure of a first temperature equalization layer 4-heating layer 3-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.
[0121] Optionally, the first temperature equalization layer 4 and the second temperature equalization layer 5 are made of the same material.
[0122] 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.
[0123] 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.
[0124] Optionally, the heating layer 3 includes a fifth substrate, which is a heating substrate.
[0125] Optionally, the fifth substrate is a deformable heating substrate, which allows the bionic skin to better fit onto the biological model.
[0126] In one embodiment, a fifth substrate can be made of elastic metals such as copper-nickel-tin alloy or silver-based elastic electrical contact material, so as to realize the heating effect of heating layer 3 by utilizing the Joule heating effect. The elastic metal also has good elastic deformation ability, which helps the bionic skin to better fit the biological model and simulate the heating situation of human body in motion or wearing state.
[0127] In one embodiment, graphene material can also be used to make the fifth substrate, so that the heating effect of the heating layer 3 can be achieved by utilizing its electric heating properties. Graphene material also has good elastic deformation ability, which helps the bionic skin to better fit the biological model and simulate the heating situation of the human body in motion or wearing state.
[0128] In one embodiment, graphene can be composited with materials such as aluminum alloy and polyimide to create a fifth substrate. This allows the heating effect of the heating layer 3 to be achieved by utilizing the properties of these materials to generate heat through electrical conduction. Furthermore, these materials all possess good elastic deformation capabilities, which helps the bionic skin better adhere to the biological model and simulate the heating conditions during human movement or wear. Moreover, the composite fifth substrate also improves its thermal conductivity and mechanical strength, helping to ensure stable heating of the heating layer 3.
[0129] Optionally, the heating layer 3 includes a sixth substrate 31 and a heating circuit 32 disposed on the sixth substrate 31.
[0130] Optionally, the sixth base 31 can deform, allowing the bionic skin to better conform to the model.
[0131] In one embodiment, the sixth substrate 31 can be made of a flexible material so that the bionic skin with the heating layer 3 can better adhere to the biological model. Conductive silver paste is printed on the surface of the sixth substrate 31 to form heating circuits 32. When energized, the heating circuits 32 can generate heat and achieve the heating effect of the heating layer 3.
[0132] In one embodiment, the sixth substrate 31 can be made of graphene material. When energized, the graphene material can generate heat, and combined with the heating circuit 32 disposed thereon, it can enhance the heating effect of the heating layer 3, thereby achieving efficient heating of the heating layer 3.
[0133] By designing the structure or length of the heating circuit 32 on the surface of the sixth substrate 31, the heat generated can be transferred to different areas of the bionic skin, which helps the bionic skin better simulate the complex heating situation of human movement or wearing.
[0134] The power supply can be controlled by adjusting the current to achieve precise temperature control of the heating layer 3, thereby adapting to different heating requirements.
[0135] Optionally, the surface of the sixth substrate 31 has a wrinkled area, and the heating line 32 is located in the wrinkled area.
[0136] In one embodiment, a wave-shaped folded structure, or folded region, can be prepared on the surface of the sixth substrate 31 using micro-nano fabrication technology. This allows the folds to unfold and release stress during deformation, preventing the heating circuit 32 on it from breaking and helping to ensure reliable heating of the heating layer 3.
[0137] Optionally, the heating layer 3 further includes an insulating layer 33, a thermally conductive layer 34, and a buffer layer 35. The buffer layer 35 is sandwiched between the heating circuit 32 and the sixth substrate 31, the insulating layer 33 is disposed on the side of the heating circuit 32 away from the buffer layer 35, and the thermally conductive layer 34 is sandwiched between the insulating layer 33 and the heating circuit 32.
[0138] like Figure 6 As shown, the buffer layer 35 can be made of silicone foam or similar materials, and its surface can be coated with pressure-sensitive adhesive to ensure close adhesion to the sixth substrate 31 and the heating circuit 32. The porous structure of the buffer layer 35 can absorb the stress of the sixth substrate 31 under tension or vibration, preventing the heating circuit 32 from breaking due to rigid contact; it can also fill in minor imperfections on the surface of the sixth substrate 31, ensuring uniform stress on the heating circuit 32.
[0139] The heating circuit 32 can be formed on the surface of the buffer layer 35 by screen printing. It can be made of carbon nanotube graphene composite conductive paste, etc., and can be designed into a serpentine, racetrack or other structures as needed to meet the corresponding heating requirements.
[0140] The heat-conducting layer 34 is sandwiched between the insulating layer 33 and the heating circuit 32. A flexible graphite film or similar material can be used, and the layer is hot-pressed to cover the surface of the heating circuit 32. The heat-conducting layer 34 can quickly and evenly conduct localized heat from the heating circuit 32 to the entire surface of the heating layer 3.
[0141] The insulating layer 33 is located on the outermost side of the heating layer 3. It can be made of materials such as polyimide (PI) film and is bonded to the thermally conductive layer 34 with high-temperature resistant epoxy resin. The insulating layer 33 can effectively prevent the heating circuit 32 from contacting the outer third detection layer 7, preventing the risk of leakage and thus improving the safety of the bionic skin.
[0142] Optionally, the sixth substrate 31 is a deformable heating substrate.
[0143] In one embodiment, the sixth substrate 31 can be made of graphene material, which can utilize its electrical heating properties to achieve the heating effect of the heating layer 3. Graphene material also has good elastic deformation ability, which helps the bionic skin to better fit the biological model. Combined with the heating circuit 32 set on it, the heating effect of the heating layer 3 can be further enhanced, thereby achieving efficient heating of the heating layer 3.
[0144] In one embodiment, the sixth substrate 31 can be fabricated by combining graphene with materials such as aluminum alloy and polyimide. This allows the heating effect of the heating layer 3 to be achieved by utilizing the heat-generating properties of these materials. Furthermore, these materials all possess good elastic deformation capabilities, which helps the bionic skin better adhere to the biological model. The heating circuitry 32 disposed on the substrate further enhances the heating effect of the heating layer 3, thereby achieving highly efficient heating. Moreover, the composite sixth substrate 31 also improves its thermal conductivity and mechanical strength, helping to ensure stable heating of the heating layer 3.
[0145] Furthermore, the sixth substrate 31 is configured as a deformable heating substrate, so that when the bionic skin with the heating layer 3 is attached to the model, the sixth substrate 31 can achieve full heating, so as to better simulate the heating situation of the human body in motion or wearing state.
[0146] Optionally, the heating circuit 32 may have a serpentine structure, a racetrack-shaped structure, a stepped structure, a corrugated structure, or a honeycomb grid structure.
[0147] Specifically, the heating line 32 can be disposed within the sixth substrate 31, or the heating line 32 can be printed on the surface of the sixth substrate 31, with its line width, spacing and layout adapted to stretchability and heating uniformity requirements.
[0148] Depending on the specific application requirements, the shape and length of the heating circuit 32 can be designed. The shape can include, but is not limited to, serpentine, racetrack, stepped, corrugated, and honeycomb grid shapes, all of which can increase the total length of the heating circuit 32 and thus enhance the heating effect of the heating layer 3.
[0149] In addition, by designing the shape of the heating circuit 32, it is also convenient that after the bionic skin is worn on the model, the heating circuit 32 on the sixth base 31 can avoid the weak areas of the biological model, which helps to extend the service life of the testing equipment.
[0150] like Figure 7 As shown, when the heating line 32 has a serpentine structure, it can be designed to be arranged in a continuous "S" shape along the length of the sixth base 31, and the total length of the line can be adapted to the size of the sixth base 31. The bending radius of the serpentine structure can be designed to be ≥1mm to avoid stress concentration during tension.
[0151] In this way, the total length of the heating circuit 32 can be increased on a certain area of the sixth base 31 by utilizing a continuous "S"-shaped bending structure, thereby enhancing the heating effect of the heating layer 3. Moreover, the continuous "S"-shaped arrangement also makes it easier to avoid functional areas or weak areas such as sweat pores when worn on the biological model, thus ensuring the performance of the bionic skin.
[0152] In addition, the continuous "S"-shaped bending structure can buffer tensile stress through its own deformation, making it easy to adapt to curved surface models.
[0153] When the heating circuit 32 has a racetrack-shaped structure, it can be designed to form a closed loop consisting of two parallel straight lines and semi-circular arcs at both ends. The semi-circular arcs at both ends can disperse tensile stress, while the parallel straight lines can ensure uniform heating.
[0154] like Figure 8 As shown, when the heating line 32 has a stepped structure, it can be designed to be arranged in segments along the length of the sixth base 31 in a stepped manner, with each straight segment forming a certain angle with the edge of the sixth base 31. The endpoints of two adjacent straight segments can be transitioned by arcs.
[0155] In this way, the total length of the heating circuit 32 can be increased on the sixth base 31 with a certain area by using the stepped structure, thereby enhancing the heating effect of the heating layer 3. Moreover, the stepped structure also makes it easier to avoid functional areas or weak areas such as sweat pores when worn on the biological model, thereby ensuring the performance of the bionic skin.
[0156] In addition, by designing the step angle, it can also adapt to the multi-directional stretching of the sixth base 31 and ensure that there are no dead corners in the heating area, making it easy to adapt to the curved biological model.
[0157] When the heating circuit 32 has a corrugated structure, it can be designed to be arranged in a sinusoidal corrugated pattern along the length of the sixth substrate 31, with the circuit being continuous and uninterrupted, so as to be able to completely cover the effective area of the sixth substrate 31. The sinusoidal corrugated structure has sufficient elastic deformation margin, so that the heating circuit 32 can still maintain continuous conduction when the sixth substrate 31 is stretched, which is convenient for adapting to the curved surface of the biological model.
[0158] When the heating line 32 has a honeycomb grid structure, the heating line 32 can be designed to have a regular polygonal honeycomb grid layout. Adjacent grids are connected by sharing edges to form a continuous conductive network, which covers the effective heating area of the sixth substrate 31 and facilitates uniform heating.
[0159] Optionally, the bionic skin includes a third detection layer 7, a heating layer 3, and a moisture equalization layer 2. The third detection layer 7 is used to detect the actual pressure value of the bionic skin surface that is in contact with the first region. The second detection layer 6 is used to detect the actual temperature value of the bionic skin surface that is in contact with the first region. The heating layer 3 is communicatively connected to the second detection layer 6, 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. The moisture equalization layer can be used to even out the surface humidity of the bionic skin.
[0160] Thus, the third detection layer 7, the heating layer 3, and the humidity equalization layer 2 work together to give the bionic skin of this embodiment three functions: temperature regulation, humidity regulation, and pressure detection, enabling it to simulate the complex and diverse functions of human skin. Compared to a single simulation function, the bionic skin provided by this invention can simulate multiple functions, thereby better simulating the real state of human skin and helping to improve wearable products.
[0161] In addition, the interference of the temperature field of the heating layer 3 and the humidity field of the humidity uniform layer 2 can be reduced by selecting materials and isolating the structure, such as adding a thermal resistance layer or a hydrophobic coating, thereby ensuring the detection accuracy of the third detection layer 7.
[0162] Furthermore, the placement of the third detection layer 7 between the heating layer 3 and the humidity equalization layer 2 avoids mechanical friction or impact caused by direct exposure of the third detection layer 7 to the outside. The heating layer 3, acting as a support layer, disperses local pressure, resulting in more uniform stress distribution on the third detection layer 7 and reducing fatigue damage.
[0163] Optionally, the third detection layer 7 may include a third substrate and a plurality of pressure sensors disposed on the third substrate.
[0164] The third substrate can be made of elastic or stretchable materials so that the third detection layer 7 with the third substrate can better adhere to the heating layer 3 or the second detection layer 6.
[0165] In one embodiment, multiple pressure sensors may be arranged in an array.
[0166] Specifically, arranging multiple pressure sensors in an array enhances the detection range of the third detection layer 7, increases the density of the pressure sensor arrangement, and improves the detection capability and accuracy of the third detection layer 7. Furthermore, the multi-point array arrangement of multiple pressure sensors can adapt to the deformable design of either the heating layer 3 or the second detection layer 6, which helps improve the sensing accuracy, response speed, and compatibility of the bionic skin, and also facilitates the simulation of the realistic sensations of human skin.
[0167] Optionally, the thickness of the uniform moisture layer 2 ranges from 2 to 4 mm.
[0168] Optionally, the thickness of the heating layer 3 ranges from 1 to 2 mm.
[0169] Specifically, the thickness range of the uniform humidity layer 2 is set to 2-4mm and the thickness range of the heating layer 3 is set to 1-2mm. This ensures that the uniform humidity layer 2 can reliably uniformly distribute humidity and the heating layer 3 can effectively generate heat, while also reducing the overall thickness of the bionic skin, which helps to improve the response speed of each functional layer.
[0170] like Figure 5 As shown, the uniform moisture layer 2 can be sandwiched between the first detection layer 1 and the third detection layer 7, so that the uniform moisture layer 2 can protect the third detection layer 7 from external physical damage and chemical corrosion, and at the same time isolate electrical interference between different functional layers, which helps to ensure the various functions of the bionic skin.
[0171] Optionally, the biological model is a human head model, with the first region including at least one of the forehead region, cheek region and jaw region, and the second region including the eye region.
[0172] Specifically, when testing head-mounted products, bionic skin can be first worn on a human head model, and then the head-mounted product can be worn on the bionic skin. A third detection layer 7 is configured to be in contact with at least one of the forehead, cheek, and jaw areas of the human head model, enabling the third detection layer 7 to detect surface pressure or surface temperature in these contact areas; a first detection layer 1 is configured to be in contact with at least the eye area of the human head model, enabling the first detection layer 1 to detect the air temperature and humidity in the eye area after wearing the product.
[0173] In one embodiment, the first detection layer 1 can be attached to the first region, enabling comprehensive detection of the surface pressure or surface temperature and air temperature and humidity of the first region through the first detection layer 1 and the third detection layer 7, which helps to comprehensively evaluate the wearing comfort of the wearable product.
[0174] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.
[0175] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims
1. A test device for a wearable product, characterized by, include: A biological model having a first region and a second region; Bionic skin, which is disposed on the biological model, includes a first detection layer (1) and a third detection layer (7) stacked together. The first detection layer (1) is at least in contact with the second region and is used to detect at least one of the air temperature data and air humidity data of the second region. The third detection layer (7) is at least in contact with the first region and is used to detect the actual pressure value or actual temperature value of the surface of the bionic skin in contact with the first region.
2. The testing device for wearable products according to claim 1, characterized in that, The first detection layer (1) is located on the outside of the bionic skin.
3. The testing device for wearable products according to claim 2, characterized in that, The first detection layer (1) includes a first substrate and a plurality of first sensors disposed on the first substrate. The first sensors have a detection segment and a connection segment. The connection segment is electrically connected to the first substrate, and the detection segment can extend toward the sampling area corresponding to the second region.
4. The testing device for wearable products according to claim 3, characterized in that, The first sensor is a humidity sensor, and multiple humidity sensors are arranged in an array; Alternatively, the first sensor may be a temperature sensor, and multiple temperature sensors may be arranged in an array. Alternatively, the first sensor may be a humidity sensor and a temperature sensor, with multiple humidity sensors and multiple temperature sensors arranged in an array, and the humidity sensors and temperature sensors arranged alternately.
5. The testing device for wearable products according to claim 3, characterized in that, The first sensor is a temperature and humidity sensor, and multiple temperature and humidity sensors are arranged in an array.
6. The testing device for wearable products according to claim 1, characterized in that, The bionic skin also includes a moisture equalization layer (2), which is disposed on the side of the first detection layer (1) near the third detection layer (7), and the moisture equalization layer (2) is used to even out the surface humidity of the bionic skin.
7. The testing device for wearable products according to claim 6, characterized in that, The bionic skin also includes a second detection layer (6), which is located on the side of the third detection layer (7) away from the uniform moisture layer (2). The second detection layer (6) is used to detect the actual temperature value of the bionic skin surface that is in contact with the first region, and the third detection layer (7) is used to detect the actual pressure value of the bionic skin surface that is in contact with the first region.
8. The testing device for wearable products according to claim 7, characterized in that, It also includes a water tank module. The biological model has multiple sweat vents. The first side of each sweat vent is connected to the moisture equalization layer (2), and the second side of each sweat vent is connected to the water tank module. The second detection layer (6) is communicatively connected to the water tank module, so that the water tank module can adjust its water output state based on the deviation between the actual temperature value detected by the second detection layer (6) and the first preset temperature value.
9. The testing device for wearable products according to claim 8, characterized in that, The bionic skin also includes a heating layer (3), which is located on the side of the second detection layer (6) away from the third detection layer (7). The heating layer (3) is communicatively connected to the second detection layer (6), 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.
10. The testing apparatus for wearable products according to any one of claims 1 to 9, characterized in that, The biological model is a human head model, the first region includes at least one of the forehead region, cheek region and jaw region, and the second region includes the eye region.