266 results about "Electronic skin" patented technology

The invention discloses a sleep state monitoring and analyzing system based on multi-sensor fusion, and relates to the technical field of health monitoring, the sleep state monitoring and analyzing system comprises a multi-modal sensor module used for collecting multi-dimensional data related to a sleep state, the multi-dimensional data comprises a bio-electricity signal, a physiological parameter, body movement data and an environment parameter, and the multi-modal sensor module is used for collecting the multi-dimensional data; the multi-modal sensor module comprises a non-contact sensor, a flexible electronic skin sensor and a bio-electricity signal sensor, and the data fusion and processing module is used for carrying out preprocessing, dynamic self-adaptive fusion and federal learning modeling on collected original data. According to an existing contact type sleep state monitoring scheme, more flexible and accurate sleep state data are realized through a non-contact type monitoring sensor in cooperation with dynamic adjustment of sleep monitoring content and adjustment of weights of various sensors for monitoring the sleep state; and a more accurate and intuitive reference report is provided for the sleep state and the health state of the subsequent user.

The invention discloses a self-energy-supply multi-mode sensing electronic skin based on ionic gel heterojunction array integration and a preparation method and application of the self-energy-supply multi-mode sensing electronic skin. The electronic skin adopts a multi-layer composite structure design and comprises an electrode array layer, a silver paste connecting layer, a nano material doped ionic gel array layer and a pure ionic gel continuous layer, and passive self-energized work is realized through a space ion migration effect at a heterogeneous gel interface. The method is characterized in that the design of a multi-layer flexible composite structure is adopted, space-time coded light, temperature, pressure and humidity four-mode stimulation can be synchronously converted into electroneurographic signals, and a collaborative identification strategy of response intensity dynamic range and synaptic learning / delay time difference is utilized; and high-precision decoupling of the multi-source signals is realized in combination with a classification decision tree algorithm. The electronic skin has the characteristics of flexibility, deformation, environment self-repairing and bionic synapse, and geometrical characteristics of a reconfigurable target source are fused through time-space domain multi-modal data.

The invention discloses an in-situ autocatalytic forming gel epidermal electrode, an electrophysiological signal monitoring system and an electrophysiological signal monitoring device. The gel precursor includes a supramolecular solvent selected from a specific monomer, a metal ion catalyst, an initiator, a cross-linking agent, and a hydrogen bond acceptor and a hydrogen bond donor. The gel precursor provided by the invention can perform autocatalysis to initiate crosslinking to form a sensing medium with an interlocking structure, and meanwhile, can form a stable interface structure with the skin to ensure that the gel precursor is tightly attached to epidermal tissues, and motion artifacts caused by relative displacement in a motion process are reduced to the greatest extent. According to the invention, the electrode is formed by gelling the gel precursor on the skin surface, and the electrode has low interface impedance so as to ensure high signal fidelity, excellent mechanical stability, dynamic adhesion, stable electrochemical performance and biocompatibility, and can be reliably used for a long time. The method can be widely applied to wearable equipment, electronic skin, medical equipment and the like.

The invention discloses a flexible pressure sensor based on ionized hydrogel and a preparation method thereof. The sensor adopts a sandwich layered structure of a flexible composite electrode, an ionized water gel dielectric layer and a flexible composite electrode, ionized water gel is used as a dielectric layer, and an upper flexible electrode and a lower flexible electrode are prepared from a multi-walled carbon nanotube / polydimethylsiloxane (MWCNTs / PDMS) composite material; the surface, making contact with the dielectric layer, of the electrode is copied through an abrasive paper template method to form a micron-sized rough structure. Under the action of external pressure, the effective contact area between the microstructure electrode and the ionized water gel dielectric layer and the equivalent electrode distance change, so that the interface electric double-layer capacitance is regulated and controlled, and high-sensitivity conversion from a pressure signal to a capacitance signal is realized. The flexible pressure sensor is simple in structure and excellent in flexibility, can be further integrated into a pressure sensing array, and is suitable for the fields of wearable electronics, electronic skin, man-machine interaction and the like.

The invention belongs to the technical field of medical training, and discloses an operation training system and method based on multi-dimensional data perception fusion, and the system comprises an image collection module, a six-degree-of-freedom operation mechanism, a somatosensory and tactile feedback glove, an operation training robot, a simulation heart model, and a control system. The image acquisition module is in signal connection with the control system and is used for acquiring a 3D high-definition image and instrument space coordinates of an operation area in real time; and the six-degree-of-freedom operating mechanism is in signal connection with the control system and is used for converting an operation instruction of a doctor into a control signal of the operation training robot and feeding back force sense information. According to the scheme, a high-simulation operation training environment is provided through the six-degree-of-freedom teleoperation mechanism, the somatosensory and tactile sensing gloves, the operation training robot and the simulation heart model made of the multi-dimensional sensing electronic skin, multi-dimensional recording and feedback of operation operation are achieved, and the operation training efficiency is improved by combining a transfer learning method. And accurate recording and reproduction of the operation process of the qualified doctor are realized.

The invention provides a material hardness identification method and system based on electronic skin. The method is applied to the technical field of robot tactile perception. The method comprises the following steps: acquiring pressure array data and environmental data acquired when the electronic skin is in contact with a target material; carrying out space, time, frequency domain and gradient multi-modal feature extraction on the pressure array data, and carrying out feature fusion to obtain a multi-modal feature vector; predicting the multi-modal feature vector by using a preset regression model to obtain a hardness predicted value; and classifying the hardness predicted values according to the environmental data to obtain the hardness category of the target material. According to the invention, high-precision soft and hard material identification is realized.

The utility model provides a hand-simulated operation device, and relates to the technical field of manipulators, the hand-simulated operation device comprises a plurality of finger-simulated structures used for grabbing a target object, the finger-simulated structures at least comprise fingertip knuckles, and the tops of the fingertip knuckles are special-shaped curved surfaces; an electronic skin is attached to each fingertip knuckle, the electronic skin is arranged to be of a stretchable and bendable flexible structure, and the electronic skin is configured to be capable of generating interactive perception with the target object when the target object is grabbed; the electronic skin is attached to the fingertip knuckles and at least covers the front faces and the tops of the fingertip knuckles. The defect that in the prior art, when a human hand operation simulating device grabs the target object, perceptual information of the target object is not accurate is overcome.

The invention discloses a visual tactile sensor, an electronic skin and a robot, relates to the field of sensors, and is used for improving the comprehensiveness and sensitivity of stress detection. The sensor comprises a magnetic film covering the top surface and the side surface, and the magnetic film is prepared by mixing magnetic powder and silicone rubber; the support supports the magnetic thin film, a magnetic display card and a light source are arranged in the support, the visual touch collector collects magnetic induction data and development data of stress of the magnetic thin film, and then the multi-mode pressure detection model analyzes the stress position and / or the stress size. The stress detection sensitivity is high, comprehensive detection of the top face and the side faces can be achieved, and the detection precision is high.

The invention relates to a flexible electronic skin integrated dust-breath bimodal detection system and detection method. A bimodal sensing module, a signal processing module, a wireless transmission module, a data application module, an abnormity early warning module and a power supply are integrated on a composite flexible substrate; the bimodal sensing module monitors a dust concentration characteristic signal of a working place and a breathing frequency characteristic signal of a worker in real time; the signal processing module receives the signals and carries out noise reduction and data fusion processing to obtain a data set D; the wireless transmission module transmits the data set D to the data application module in real time, performs data real-time display, historical data storage, report generation and data export functions, and supports synchronization to an occupational health management platform; meanwhile, the data application module can process data in the data set D and feed back a processing result to the abnormity early warning module, and the abnormity early warning module correspondingly triggers an early warning signal according to feedback data; according to the invention, the target can be continuously monitored, and a high-precision detection result is obtained.

The invention discloses an electronic skin tactile perception feature extraction method based on hierarchical semantic coding. The method comprises the following steps of S1, collecting electronic skin signals; high-density flexible electronic skin is pasted on the hands or fingertips of the robot; S2, touch signals are preprocessed; performing alignment processing on the tactile signal, the image signal and the voice signal in time through a multi-modal data synchronization mechanism; S3, performing multi-level semantic coding on the tactile signal; s4, carrying out cross-modal mapping; a hierarchical semantic encoder is provided, tactile signals are abstracted into high-dimensional semantic vectors with interpretability step by step, human-like tactile understanding is achieved, extracted tactile features support multi-modal alignment and embedding in a shared space, native cooperation with CLIP / VLM class models can be achieved, modal barriers are broken, and the method has the advantages of being simple in structure, convenient to operate and high in practicability. The tactile information feature extraction method has strong generalization and adaptability, can be directly applied to a large model of vision-language-tactile multi-modal information fusion, and realizes real-time training and decision making.

The invention discloses a TPU film for robot electronic skin and a preparation method of the TPU film, and relates to the technical field of flexible electronic materials, the film takes TPU introduced with Diels-Alder dynamic reversible bonds as a matrix, a conductive filler is formed by dopamine-modified silver nanowires and MXene, the concentration of the conductive filler is in continuous or quasi-continuous gradient decrease, and the conductive filler is a conductive filler formed by silver nanowires and MXene. An integrated network with self-repairing and environmental stability is formed and is used as an electrode; phase change microcapsules and triboelectric nanofibers are compounded in a low-conductivity contact area to form an intelligent response layer which is self-adaptive in sensing threshold and capable of generating power by friction. Through one-step multi-nozzle electrostatic spinning forming, the problem that self-repairing, signal stability, environmental adaptability and energy independence in electronic skin are difficult to consider at the same time is solved.

The invention relates to the technical field of robots, and provides a robot and a safety control method, device and equipment thereof, a storage medium and a product, the robot comprises electronic skin, the electronic skin comprises a first detection unit and a second detection unit, and the method comprises the following steps: responding to an obstacle approaching the robot, and detecting the approaching speed of the obstacle through the first detection unit; in response to the approaching speed being greater than or equal to a preset speed threshold value, controlling the robot to perform obstacle avoidance path planning and / or speed reduction; detecting a contact force and a contact moment of the obstacle through a second detection unit in response to the obstacle contacting the robot; and determining safety braking parameters of the robot based on the approaching speed, the contact force and the contact moment. Safety speed monitoring based on proximity detection and power and force limitation based on contact detection in man-machine cooperation can be achieved at the same time, a dual protection mechanism of proximity sensing and contact sensing of the robot is achieved, and safety is further improved.

The invention discloses a preparation method and application of bamboo nanocellulose and bi-crosslinking hydrogel. The preparation method of the hydrogel comprises the following steps: (1) dispersing the bamboo nanocellulose; (2) preparing a lignin-Fe solution; and (3) preparation of the bi-crosslinked hydrogel: adding the bamboo nanocellulose suspension and acrylic acid into water, then adding ammonium persulfate and N, N '-methylene bisacrylamide, finally adding the lignin-Fe solution to obtain a precursor solution, and pouring the precursor solution into a mold to obtain the bi-crosslinked hydrogel. The moso bamboo is used as a raw material, cellulose is extracted from the plant which is extremely high in carbon sequestration capacity and rapid in production and then is processed into nano cellulose, a novel utilization way is provided for the moso bamboo, and the hydrogel prepared from the moso bamboo is good in environment friendliness, green, natural and non-toxic, can be in direct contact with skin, and has a good application prospect. And the application and development of the material in the fields of environmental protection, biomedical treatment, electronic skin, wearable sensors and the like are facilitated.

The invention discloses a self-powered flexible sensor and a preparation method thereof, and belongs to the field of electronic skin, man-machine interaction, flexible electronic devices and sensors. The invention relates to a cellulose acetate-based ionic gel self-energized flexible sensor which is prepared from cellulose acetate, ionic liquid, a polymer monomer, a cross-linking agent and an initiator and has good mechanical property and antibacterial property, the cellulose acetate enhances the mechanical property of the gel through non-covalent crosslinking, and the ionic liquid plays a conductive role. The flexible sensor has good conductivity, high sensitivity and stability, and can be stretched, twisted and bent. Meanwhile, the high transparency and excellent biocompatibility can be realized, so that the electronic skin can be used as the electronic skin for multifunctional perception and integrated application. The material is environment-friendly, the preparation method is simple, the operability is high, the application field is wide, and the prospect is wide.

The invention discloses a manufacturing method of a flexible electronic skin light source, which comprises the following steps: cutting a base material to obtain a base material raw material with a required size; obtaining conductive silver paste, mixing the conductive silver paste with a diluent, and uniformly stirring to prepare conductive ink; printing conductive ink on the surface of the base material raw material according to a preset circuit pattern by using screen printing equipment to obtain a base material circuit diagram; placing a light source patch at a corresponding position of the substrate circuit diagram, and electrically connecting the light source patch with the circuit diagram by adopting welding equipment to obtain an electrically connected light source patch substrate; laminating a polyimide reinforcing material on the back surface of the light source patch to obtain a flexible light source semi-finished product; the flexible light source semi-finished product is packaged, the flexible light source semi-finished product is completely wrapped, and the flexible electronic skin light source is obtained; the flexible electronic skin light source manufactured through the method can be bent in any direction, the bending frequency of the flexible light source is greatly increased, and the service life of the flexible light source is greatly prolonged.

The invention relates to a flexible electrode for electronic skin and a preparation method thereof, and belongs to the field of electronic skin. The flexible electrode for the electronic skin disclosed by the invention is prepared from polybenzodifuran diketone, nano metal powder and maleimide modified polyurethane. The flexible electrode disclosed by the invention still keeps excellent conductivity after being repeatedly stretched; meanwhile, the self-repairing performance is achieved, the initial performance of the material can be recovered when the material is damaged, the service cycle of the electronic skin can be prolonged, and the maintenance cost is reduced.

The invention provides an MXene / CNF composite mesoporous fiber material as well as a preparation method and application thereof. The preparation method comprises the following steps: injecting an MXene / CNF spinning solution into an acetic acid coagulating bath, fishing out the MXene / CNF spinning solution, and air-drying the MXene / CNF spinning solution to obtain the MXene / CNF composite mesoporous fiber material, the MXene / CNF spinning solution is a dispersion liquid of nano cellulose and MXene in water. According to the MXene / CNF composite mesoporous fiber material with high conductivity and narrow distribution, the mesoporous structure not only effectively transfers stress, but also contributes to rapid transmission of electrons and ions, has a relatively high application prospect in the fields of electromagnetic shielding, wave absorption, energy storage device electrodes and flexible sensors, and can be widely applied to the fields of electromagnetic shielding, wave absorption, energy storage device electrodes and flexible sensors. And a novel multifunctional platform is expected to be provided for wearable electronic equipment, electronic skin, human body motion monitoring equipment and the like.

The invention belongs to the technical field of flexible sensors, and particularly provides a flexible electronic sensor for airflow-temperature field cooperative detection and a detection method thereof, which are used for realizing airflow-temperature field cooperative detection and have the advantages of high sensitivity, high precision and high stability. According to the flexible electronic sensor, the temperature sensing unit of the bionic columnar structure is matched with the flexible electronic skin, interference of external factors such as pressure and deformation can be effectively resisted, and the flexible electronic sensor can be applied to any curved-surface or polygonal-structure device; meanwhile, the temperature sensing unit adopts a columnar structure, so that the temperature sensing unit can sensitively capture small changes of a temperature field, and the detection sensitivity and precision are greatly improved. Meanwhile, the invention provides a gas flow-temperature field cooperative detection method based on the flexible electronic sensor, the interaction between the gas flow and the temperature field is comprehensively considered, and more comprehensive and accurate information is provided for gas detection.

The application discloses an electronic skin-oriented conductive silver paste and a preparation method and application thereof, and relates to the technical field of flexible printed electronic materials.The raw materials of the electronic skin-oriented conductive silver paste include flaky silver powder, silver nanoparticles, thermoplastic polyurethane elastomer, acrylic elastomer, PEDOT:PSS microgel dispersion, (3-glycidylpropoxy)trimethoxysilane, polydiallyldimethylammonium chloride, hexanedial modified dopamine copolymer, (3-aminopropyl)triethoxysilane, methacryloyloxypropyltrimethoxysilane, cellulose acetate, modified polyurea thixotropic agent, hydrogenated castor oil, ethylene glycol ether acetate, dibasic acid ester, leveling agent and water.The electronic skin-oriented conductive silver paste has the advantages of good electrical performance, good mechanical-electrical stability, good anti-electromigration and sweat corrosion resistance, and can still maintain dendrite-free and low drift under long-term coupling of sweat and bias, and is suitable for electronic skin.

The invention relates to the technical field of bionic electronic skin and flexible sensing materials, in particular to an AF / rGO fiber tactile system and method.The AF / rGO fiber tactile system and method.The AF / rGO fiber tactile system and method are specifically characterized in that aramid 1414 fibers are adopted as a base material, subjected to ultrasonic cleaning and then repeatedly soaked in a graphene oxide solution, a graphene oxide coating is loaded on the surface of the aramid 1414 fibers, and the AF / rGO fiber tactile system is obtained; reducing into a graphene oxide coating by utilizing steam reduction, and performing hot pressing synergism to prepare an AF / rGO fiber sensor; the piezoresistive and thermosensitive effects of the fiber are utilized, the fiber serves as a core material of the sensor and is connected with two electrodes to be assembled into the sensor, mechanical and temperature stimulation is converted into resistance signal change, and the pressure and temperature sensing capacity of the skin is simulated through multi-mode fusion and signal processing. Based on the contact resistance dynamic response of the micro-scale structure, combining a neural network algorithm to realize fabric recognition and gesture recognition; and meanwhile, fire early warning is triggered through temperature resistance signal change by utilizing the flame-retardant characteristic of the aramid fiber substrate.

The invention provides a magnetic sensitive type electronic skin and a using method thereof, and the magnetic sensitive type electronic skin comprises a magnetic elastic body, a magnetic sensor and a signal processing module, the magnetic projectile body comprises a surface structure and magnetic cilia distributed on the surface structure, and the magnetic cilia are used for generating deformation based on external contact force so as to generate a magnetic change signal; the magnetic sensor is used for sensing the magnetic change signal and sending the magnetic change signal to the signal processing module; the signal processing module is used for determining the position and magnitude of the external contact force based on the magnetic change signal. The invention can solve the problem that the existing magnetic sensitive electronic skin cannot realize high-resolution and large-area sensing of the contact position.

The utility model relates to the field of electronic induction skin, in particular to a film covering device for the electronic induction skin. The problems that in the electronic skin laminating process, a flexible protection layer and a release film layer cannot be laminated in the electronic skin, use of the electronic skin is affected, the electronic skin laminating effect is affected due to the fact that the flexible protection layer and the release film layer do not have the arc-shaped bending function, the flexible protection layer and the release film layer cannot be tightly attached to the arc-shaped position, manual laminating is needed, and the laminating efficiency is high are solved. And the working efficiency of electronic skin film covering is greatly influenced. The device comprises a workbench, and further comprises a bending and laminating assembly, a driving assembly and a laminating assembly. According to the electronic skin laminating machine, arc-shaped laminating can be conveniently carried out on the electronic skin through the bending laminating assembly, laminating can be carried out on a cambered place, then automatic laminating can be conveniently carried out on the electronic skin through the driving assembly, the working efficiency of electronic skin laminating is greatly improved, and the laminating efficiency is greatly improved through the laminating assembly. And the fitting effect of the electronic skin is further improved.

The invention relates to a pre-sensing variable-stiffness flexible electronic skin based on time division multiplexing and a cooperative control method thereof, and belongs to the technical field of flexible electronics and robot sensing. Aiming at the core contradiction of magnetic field conflict between a sensing unit and a driving unit in the existing flexible electronic skin, especially the defects of function mutual exclusion between a non-interference environment required by giant magnetoresistance pre-sensing and a high-intensity magnetic field required by magneto-rheological driving and system rigidity increase and flexibility reduction caused by a traditional spatial isolation scheme, the invention provides the flexible electronic skin. The invention provides a cooperative control architecture. According to the architecture, system working time is divided into a sensing window and an execution window which are in high-frequency alternation, and sensing and driving processes which interfere with each other are physically isolated from time; and meanwhile, an event-driven interruption mechanism based on a friction electric signal is introduced, and a continuous high-rigidity mode is forcibly entered during sudden contact. Functional conflicts are solved without magnetic shielding materials, so that the electronic skin keeps excellent flexibility, and cooperative work of pre-sensing and variable stiffness is realized.

The invention discloses a human-simulated robot facial expression mechanism of a multi-degree-of-freedom micro-driver, which comprises a bottom plate, a supporting disc is fixedly arranged at the top of the bottom plate, a bracket is fixedly arranged on the supporting disc, an adjusting assembly is arranged on the bracket, a supporting frame is fixedly arranged at the top of the bracket, a shell is connected to the supporting frame, and a driving device is arranged on the shell. The shell is covered with an electronic skin layer, a limiting block is fixedly arranged in the electronic skin layer, a limiting cylinder corresponding to the limiting block is fixedly arranged on the shell, the limiting block is arranged in the limiting cylinder in a penetrating mode, a frame is fixedly arranged in the supporting frame, and an air pressure mechanism is arranged in the frame. A controller is fixedly arranged on the bottom plate; according to the humanoid robot facial expression mechanism of the multi-degree-of-freedom micro-driver, the air pump can be controlled to work, auxiliary limiting of the electronic skin layer is achieved by means of the limiting block, and therefore the installation stability of the electronic skin layer is effectively improved.

The invention provides a data compression and transmission method for electronic skin of a humanoid robot, belongs to the field of intelligent humanoid robots with bodies, and is used for solving the problems that when large-area electronic skin is applied to the humanoid robot, the data transmission amount is large, the communication rate is low, and the field environment requirement cannot be met. Through the steps of dynamic scanning and acquisition of the electronic skin based on the touch area, data preprocessing, data stroke compression, data differential coding of the non-zero reference value, feature extraction of the touch area and the like, the high compression ratio of the electronic skin terminal to the data is realized, and the data transmission form can be dynamically adjusted; rapid transmission of electronic skin data is achieved, the edge computing capacity of the electronic skin is achieved, and the sensing capacity of the robot body is improved.

The invention belongs to the technical field of flexible electronic sensing, and discloses novel leather-based pressure-sensitive sensing electronic skin and a preparation method thereof. According to the leather-based pressure-sensitive sensing electronic skin, tanning-agent-free leather serves as a base material, and a three-dimensional conductive network is constructed in the tanning-agent-free leather base material, so that pressure-sensitive sensing is achieved. The pressure-sensitive sensing electronic skin provided by the invention completely retains a three-dimensional multi-level fiber network structure of natural leather from micrometer to nanometer, so that when the leather-based pressure-sensitive sensing electronic skin is subjected to external pressure, the collagen fiber can realize cross-scale deformation, thereby realizing wide and sensitive response from tiny pressure to higher pressure, and further realizing the purpose of improving the safety of the leather-based pressure-sensitive sensing electronic skin. And human body motion monitoring is realized.

The invention provides a temperature-strain-pressure self-decoupling self-powered electronic skin and a preparation method thereof. The temperature-strain-pressure self-decoupling self-powered electronic skin sequentially comprises a thermoelectric layer, an insulating layer, a piezoelectric layer and a packaging layer from bottom to top, the thermoelectric layer is composed of conductive thermoelectric hydrogel and electrodes arranged on the upper surface and the lower surface of the conductive thermoelectric hydrogel. The piezoelectric layer is composed of a piezoelectric film and electrodes arranged on the upper surface and the lower surface of the piezoelectric film. According to the invention, the sensing layers with different sensing mechanisms are integrated, so that self-powered and self-decoupling sensing of various sensing signals is realized.

The application provides a flexible three-dimensional force sensor simulating hair touch, and belongs to the technical field of electronic skin. The flexible three-dimensional force sensor comprises: a flexible pressure sensing layer comprising at least one sensing unit; and an elastic force decomposition layer arranged on the flexible pressure sensing layer, wherein the elastic force decomposition layer comprises force decomposition units corresponding to the sensing units, each force decomposition unit is implanted with high-rigidity hair on a side away from the flexible pressure sensing layer, the high-rigidity hair comprises a first part exposed outside the force decomposition unit and a second part implanted inside the force decomposition unit, and the first part and the second part constitute a two-stage lever structure; when a space force acts on the high-rigidity hair, the high-rigidity hair amplifies the space force through the two-stage lever structure, and transmits the amplified space force to the corresponding sensing unit through the corresponding force decomposition unit, so that the flexible pressure sensing layer senses the space force. The application can more accurately perceive slight force.

The application discloses a kind of based on directional shuttle-shaped cavity bimodal flexible capacitive sensor and preparation method thereof, belong to flexible electronic sensor technical field, by dispersing magnetic nanoparticles in low boiling point solvent to form magnetic fluid, emulsification dispersion in hydrogel prepolymer liquid, after rheological control, in turn carry out uniform magnetic field pre-stretching and pulse magnetic field strengthening lengthening, make droplet form shuttle-shaped;Again by half freezing lock shape, vacuum freeze drying removes solvent and makes magnetic nanoparticles deposit in cavity inner wall, completely freeze polymerization makes matrix solidification, finally in situ reduction forms conductive layer and is packaged and is prepared sensor, it has bimodal: when pressure is along the long axis direction of shuttle-shaped cavity, it is first electric capacity change rate, when it is along short axis direction, it is second electric capacity change rate, and second electric capacity change rate is greater than first electric capacity change rate, and pressure direction is identified by single electric capacity pair.The application structure is simple, sensitivity is high, stability is good, is suitable for electronic skin, intelligent prosthesis and man-machine interaction field.

The invention discloses an electronic skin capable of realizing non-inductive, continuous and sensitive motion monitoring, and belongs to the field of flexible electronics and biomedical engineering. The electronic skin is mainly prepared from sodium alginate and acrylamide to form porous network gel, and the porous network gel is cross-linked to prepare the original porous base electronic skin; preparing solid-like coating paint from silicon dioxide nanoparticles, silicone oil and epoxy resin; the solid-like coating paint is uniformly sprayed on the surface of the original porous-based electronic skin through a spraying technology, and is cured to form the solid-like coating modified electronic skin. The electronic skin with the specific formula and thickness is prepared, and personalized, low-cost, portable, wireless, non-inductive, continuous and sensitive motion monitoring can be achieved.